CN115819833B - Isolation assembly and preparation method and application thereof - Google Patents
Isolation assembly and preparation method and application thereof Download PDFInfo
- Publication number
- CN115819833B CN115819833B CN202111094902.2A CN202111094902A CN115819833B CN 115819833 B CN115819833 B CN 115819833B CN 202111094902 A CN202111094902 A CN 202111094902A CN 115819833 B CN115819833 B CN 115819833B
- Authority
- CN
- China
- Prior art keywords
- sheet
- hydrophilic
- polypropylene sheet
- isolation
- polypropylene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002955 isolation Methods 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title abstract description 7
- -1 polypropylene Polymers 0.000 claims abstract description 158
- 239000004743 Polypropylene Substances 0.000 claims abstract description 155
- 229920001155 polypropylene Polymers 0.000 claims abstract description 155
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 238000001704 evaporation Methods 0.000 claims abstract description 41
- 230000008020 evaporation Effects 0.000 claims abstract description 41
- 239000002086 nanomaterial Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims description 52
- 239000007789 gas Substances 0.000 claims description 37
- 238000001035 drying Methods 0.000 claims description 31
- 238000005187 foaming Methods 0.000 claims description 27
- 239000000178 monomer Substances 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 22
- 238000004140 cleaning Methods 0.000 claims description 15
- 150000007524 organic acids Chemical class 0.000 claims description 13
- 238000000926 separation method Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 150000002148 esters Chemical class 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 230000005660 hydrophilic surface Effects 0.000 claims description 4
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims description 4
- 150000008064 anhydrides Chemical class 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims description 2
- 125000005842 heteroatom Chemical group 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000007334 copolymerization reaction Methods 0.000 claims 2
- 230000004888 barrier function Effects 0.000 claims 1
- 238000004078 waterproofing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 19
- 239000000047 product Substances 0.000 description 26
- 239000008367 deionised water Substances 0.000 description 24
- 229910021641 deionized water Inorganic materials 0.000 description 24
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 18
- 125000006850 spacer group Chemical group 0.000 description 18
- 239000003513 alkali Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 15
- 238000006243 chemical reaction Methods 0.000 description 14
- 239000010865 sewage Substances 0.000 description 13
- 238000005507 spraying Methods 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 11
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 10
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 229920005604 random copolymer Polymers 0.000 description 8
- 238000005530 etching Methods 0.000 description 7
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical group CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 5
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000007605 air drying Methods 0.000 description 3
- 230000003373 anti-fouling effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 2
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- YZXBAPSDXZZRGB-DOFZRALJSA-N arachidonic acid Chemical compound CCCCC\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O YZXBAPSDXZZRGB-DOFZRALJSA-N 0.000 description 2
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 description 2
- 229910001863 barium hydroxide Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical compound C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 150000004679 hydroxides Chemical class 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 2
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- UUCCCPNEFXQJEL-UHFFFAOYSA-L strontium dihydroxide Chemical compound [OH-].[OH-].[Sr+2] UUCCCPNEFXQJEL-UHFFFAOYSA-L 0.000 description 2
- 229910001866 strontium hydroxide Inorganic materials 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- CYOAEBLVGSUAKP-UHFFFAOYSA-N 2-(4-ethenylphenyl)acetic acid Chemical compound OC(=O)CC1=CC=C(C=C)C=C1 CYOAEBLVGSUAKP-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- IRQWEODKXLDORP-UHFFFAOYSA-N 4-ethenylbenzoic acid Chemical compound OC(=O)C1=CC=C(C=C)C=C1 IRQWEODKXLDORP-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 description 1
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 239000005750 Copper hydroxide Substances 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229940114079 arachidonic acid Drugs 0.000 description 1
- 235000021342 arachidonic acid Nutrition 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- WPJWIROQQFWMMK-UHFFFAOYSA-L beryllium dihydroxide Chemical compound [Be+2].[OH-].[OH-] WPJWIROQQFWMMK-UHFFFAOYSA-L 0.000 description 1
- 229910001865 beryllium hydroxide Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910001956 copper hydroxide Inorganic materials 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000003665 fog water Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229910021505 gold(III) hydroxide Inorganic materials 0.000 description 1
- WDZVNNYQBQRJRX-UHFFFAOYSA-K gold(iii) hydroxide Chemical compound O[Au](O)O WDZVNNYQBQRJRX-UHFFFAOYSA-K 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- 229910021506 iron(II) hydroxide Inorganic materials 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 229940117955 isoamyl acetate Drugs 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 102220040412 rs587778307 Human genes 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- BUUPQKDIAURBJP-UHFFFAOYSA-N sulfinic acid Chemical compound OS=O BUUPQKDIAURBJP-UHFFFAOYSA-N 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 150000003566 thiocarboxylic acids Chemical class 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000013014 water-saving technology Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
Landscapes
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
The invention relates to the technical field of isolation materials, in particular to an isolation assembly, a preparation method and application thereof. The isolation component is formed by assembling an isolation sheet and a frame, wherein the isolation sheet consists of a plurality of hydrophilic sheets, the surface of the isolation sheet is provided with holes, and the aperture ratio is less than 10%; the hydrophilic sheet is a polypropylene sheet with a plurality of micro-nano structures on the surface, and hydrophilic side groups are grafted on the micro-nano structures; wherein, the surface grafting rate of the hydrophilic side group on the surface of the hydrophilic sheet is 10-50wt%. The isolation component provided by the invention has the advantages that the isolation component is limited to contain the isolation sheet consisting of a plurality of hydrophilic sheets, so that the water evaporation rate and the volatile gas evaporation rate are effectively reduced, and the performance is stable; meanwhile, the isolation assembly is simple in structure and easy to install, and parts are not required to be replaced frequently.
Description
Technical Field
The invention relates to the technical field of isolation materials, in particular to an isolation assembly, a preparation method and application thereof.
Background
In recent years, humans are facing serious water crisis due to high temperature weather, drought and increasing municipal and irrigation water demands caused by extreme climates. Large-scale evaporation of water is one of the main causes of world water resource shortage, especially in arid areas; the high temperatures can cause water in open air reservoirs, rivers and farm irrigation channels, as well as dew and mist to evaporate into the air. Therefore, effective reduction of water evaporation is important for alleviating water crisis, and new water saving technology is being developed, dew or fog water is collected, and water evaporation of open-air ponds, reservoirs, lakes and the like is inhibited.
US8696987B2 provides a method for reducing water evaporation by forming a water-soluble polymer as a bottom layer on the surface of a water body, and forming a water-insoluble single-molecular chain compound as an upper layer to inhibit water evaporation. The method can inhibit water evaporation to a certain extent but is easy to blow away by strong wind, so that the chemical substances are required to be added again frequently, the cost is increased, and water pollution is caused by frequent addition. The los Angeles reservoir covers the black plastic balls on the surface of the reservoir to inhibit water evaporation, but a large amount of water still evaporates from the ball gaps, and scientists still worry about whether the water consumption in the manufacturing process of the sunshade balls is larger than the saved water amount. In order to overcome the deficiencies of the prior art, there is a continuing need to develop new materials that inhibit water evaporation.
Meanwhile, along with the increasing awareness of people on environmental protection, enterprises also increase the investment on sewage treatment, the sewage treatment generally needs to settle sediment in the sewage, and is generally carried out in a settling tank, and due to the influence of external temperature and the time of storing the sewage in the settling tank, the sewage is volatilized in the settling process, and certain pollution exists to the surrounding environment. Traditional prevent that volatilizing of sewage can adopt the mode of sheltering from generally, if establish sunshade net in the effluent water sump top, perhaps adopt the greasy dirt to float on the sewage surface of water to reach the volatile effect of reduction sewage.
CN108928861a adopts the floating mode of greasy dirt to reduce sewage volatilization, but the greasy dirt receives factors such as wind blows the influence, can not even float on the surface of water, shelter from the surface of water completely, and greasy dirt itself is difficult to retrieve simultaneously, and is limited to reducing sewage volatilization effect.
Therefore, the existing separator cannot simultaneously have the problems of low water evaporation rate, low volatile gas evaporation rate, chemical stability, mechanical abrasion resistance, high cost and the like, and a new separator is needed.
Disclosure of Invention
The invention aims to solve the problems of high water evaporation rate, high volatile gas evaporation rate, poor durability, high cost, complex preparation process and the like of the conventional isolation sheet, and provides an isolation assembly, a preparation method and application thereof. The isolation component has lower water evaporation rate and volatile gas evaporation rate; meanwhile, the method is simple and easy for industrial production.
In order to achieve the above object, a first aspect of the present invention provides an insulation assembly assembled from an insulation sheet and a frame, the insulation sheet being composed of a plurality of hydrophilic sheets, the surface of the insulation sheet being provided with holes, and the aperture ratio being < 10%;
The hydrophilic sheet is a polypropylene sheet with a plurality of micro-nano structures on the surface, and hydrophilic side groups are grafted on the micro-nano structures;
wherein, the surface grafting rate of the hydrophilic side group on the surface of the hydrophilic sheet is 10-50wt%. The second aspect of the present invention provides a method for producing an insulation assembly, comprising the steps of:
(1) Contacting a polypropylene sheet with an etchant and performing first drying to form a surface with a micro-nano structure on the polypropylene sheet to obtain a modified polypropylene sheet;
(2) Coating a monomer with a hydrophilic side group on the surface of the modified polypropylene sheet, and then carrying out microwave irradiation to graft the hydrophilic side group on the micro-nano structure of the modified polypropylene sheet so as to obtain a hydrophilic sheet with a hydrophilic surface;
(3) Assembling a separation sheet and a frame, wherein the separation sheet consists of a plurality of hydrophilic sheets, so as to obtain a separation assembly;
wherein, the surface of the isolation sheet is provided with holes, and the aperture ratio is less than 10%;
wherein, in the hydrophilic sheet, the surface grafting rate of the hydrophilic side group on the hydrophilic sheet is 10-50wt%.
The isolation component provided by the first aspect of the invention or the isolation component prepared by the method provided by the second aspect is applied to waterproof and antifouling.
Compared with the prior art, the invention has the following advantages:
(1) According to the isolation assembly, the isolation assembly is limited to comprise the isolation sheet consisting of the plurality of hydrophilic sheets, the hydrophilic sheet is further limited to be the polypropylene sheet with the surface provided with the plurality of micro-nano structures, and the hydrophilic side groups are grafted on the micro-nano structures, so that the hydrophilic sheet is effectively improved in hydrophilicity and stable in performance on the premise that the mechanical property is not influenced, the isolation sheet is enabled to have water collecting property and not to absorb water, and therefore the water evaporation rate and the volatile gas evaporation rate of the isolation assembly are effectively reduced, and the isolation assembly is stable in performance; meanwhile, the isolation assembly is simple in structure and easy to install, and parts are not required to be replaced frequently;
(2) The isolation sheet material in the isolation assembly provided by the invention can be fully infiltrated with the contact surface, so that the surface of the isolation sheet material is fully attached to the contact surface, and the isolation sheet material has no vapor pressure, so that the isolation sheet material can obviously inhibit water evaporation and volatile gas volatilization;
(3) According to the method provided by the invention, physical modification (etching) and chemical modification (grafting) are combined, so that the surface of the isolation sheet has super-hydrophilicity, and then the aperture ratio of the isolation sheet is combined, so that the vapor and volatile gas of the contact surface can be effectively recovered; meanwhile, the method has simple process and easy operation, and is convenient for industrialized mass production.
Drawings
Fig. 1 is a schematic structural diagram of an isolation assembly according to the present invention.
Detailed Description
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
In the present invention, unless otherwise specified, the terms "first," "second," and "third" do not denote any order of magnitude, nor are they intended to be limiting of various materials or steps, but rather are merely used to distinguish one material or step from another, e.g., "first," "second," and "third," of "first," "second," and "third," and "fourth," and merely used to distinguish one material or step from another.
The first aspect of the invention provides an isolation assembly, which is assembled by an isolation sheet and a frame, wherein the isolation sheet consists of a plurality of hydrophilic sheets, the surface of the isolation sheet is provided with holes, and the aperture ratio is less than 10%;
The hydrophilic sheet is a polypropylene sheet with a plurality of micro-nano structures on the surface, and hydrophilic side groups are grafted on the micro-nano structures;
wherein, the surface grafting rate of the hydrophilic side group on the surface of the hydrophilic sheet is 10-50wt%.
The isolating sheet material composed of the plurality of hydrophilic sheet materials has super-hydrophilic performance, and can collect small water drops in steam when the steam flows, the small water drops are converged on the surface of the isolating sheet material to form large liquid drops, and the large liquid drops fall back to the water surface along the surface; the surface of the isolation sheet only has water collecting performance, water can not be absorbed, and the defect that the water collecting performance is greatly reduced after water is absorbed is overcome, so that the isolation assembly assembled by the isolation sheet and the frame has low water evaporation rate, and the structure is simple, and parts are not required to be replaced frequently. Meanwhile, the hydrophilic sheet is a polypropylene sheet with a plurality of micro-nano structures on the surface, hydrophilic side groups are grafted on the micro-nano structures, the micro-nano structures exist in the form of protrusions and/or grooves, and the hydrophilic side groups are used for collecting liquid drops in airflow when steam passes through, so that the water evaporation rate and the volatile gas evaporation rate of the isolation sheet are further improved and reduced.
In the present invention, the aperture ratio refers to a ratio of a pore area of the separator surface to a surface area of the separator, unless otherwise specified.
In some embodiments of the present invention, preferably, the separator sheet is formed by splicing a plurality of the hydrophilic sheets. In the present invention, the manner of splicing the hydrophilic sheets depends on the size of the separator sheet in practical use.
The invention provides a structural schematic diagram of an isolation assembly, as shown in figure 1, wherein the isolation assembly is formed by assembling an isolation sheet and a frame, and the isolation sheet is formed by splicing a plurality of hydrophilic sheets; wherein, the surface of the isolation sheet is provided with holes, and the hydrophilic sheet is a polypropylene sheet with a plurality of micro-nano structures on the surface.
In the present invention, the frame has a supporting effect without being particularly described, and preferably, the frame includes, but is not limited to, a glass fiber reinforced plastic frame.
In some embodiments of the invention, the average diameter of the pores is preferably in the range of 0.1-1cm, for example, 0.1cm, 0.2cm, 0.5cm, 0.6cm, 0.7cm, 0.8cm, 0.9cm, 1cm, and any value in the range of any two values, preferably 0.5-1cm. The adoption of the preferable condition is more favorable for keeping the air permeability of the water tank and communicating with the atmospheric pressure, so that the isolation assembly can still keep close fit along with the change of the water surface.
In some embodiments of the invention, preferably, the open cell content is < 10%, preferably < 5%, more preferably 3-5%. The preferred conditions are such that the spacer assembly minimizes water evaporation and volatile gas evaporation.
In some embodiments of the invention, preferably, the polypropylene sheet is a foamed polypropylene sheet.
In some embodiments of the invention, preferably, the foamed polypropylene sheet has a surface average pore size of 10 to 100 μm, for example, any value in the range of 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, and any two values, preferably 20 to 60 μm; the bending strength is 0.1 to 1MPa, for example, any value in the range of 0.1MPa, 0.2MPa, 0.3MPa, 0.4MPa, 0.5MPa, 0.7MPa, 0.9MPa, 1MPa, and any two values, preferably 0.1 to 0.5MPa; the thickness is 0.1 to 1cm, for example, any value in the range of 0.1cm, 0.2cm, 0.3cm, 0.4cm, 0.5cm, 0.8cm, 1cm, and any two values, preferably 0.1 to 0.5cm. With the preferred conditions, it is more advantageous to form protrusions and/or recesses of greater length and depth in the polypropylene sheet.
In the invention, under no special condition, the surface average aperture parameter is measured by adopting a scanning electron microscope 3-time surface scanning statistical average method; the bending strength parameter is measured by adopting a GB/T9341-2008 polypropylene three-point bending test method; the thickness parameter is measured by a vernier caliper test method.
In some embodiments of the present invention, preferably, the foamed polypropylene sheet is produced by foaming at least one selected from the group consisting of a homo-polypropylene sheet, a random copolymer polypropylene sheet and an impact copolymer polypropylene sheet having a polypropylene content of 50wt% or more. In the invention, the foaming process has a wide selection range, and can be prepared by adopting chemical foaming or adopting physical foaming.
In the invention, the source of the foaming polypropylene sheet has a wider selection range, and the foaming polypropylene sheet is prepared by foaming. In the present invention, the foamed polypropylene sheet may be obtained by purchase or by preparation, and the present invention is not described herein.
In a preferred embodiment of the present invention, the foamed polypropylene sheet is produced from a polypropylene sheet by foaming with supercritical carbon dioxide.
In some embodiments of the invention, preferably, the polypropylene content in the foamed polypropylene sheet is greater than or equal to 50wt%, preferably 50-90wt%.
In some embodiments of the invention, preferably, the polypropylene has a weight average molecular weight of 10 4 -10 6 g/mol; the melt index at 230℃under a load of 2.16kg is in the range of 0.1 to 15g/10min, for example, 0.1g/10min, 1g/10min, 2g/10min, 3g/10min, 4g/10min, 5g/10min, 6g/10min, 7g/10min, 10g/10min, 15g/10min, and any value in the range of any two values, preferably 1 to 7g/10min.
In the present invention, the melt index parameter is measured by the GB/T3682.1-2018 method without specific explanation.
In the present invention, without being limited to a particular case, the micro-nanostructure refers to protrusions and/or grooves having a micro-or nano-scale feature size, arranged in a specific manner.
In some embodiments of the invention, preferably, the length of each of the micro-nanostructures is from 1nm to 100 μm, e.g., any of the range of 1nm, 10nm, 100nm, 200nm, 500nm, 1 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 100 μm, and any two values, preferably from 500nm to 50 μm; the depth is 1 μm to 1mm, for example, any value in the range of 1 μm, 10 μm, 50 μm, 100 μm, 150 μm, 200 μm, 250 μm, 300 μm, 400 μm, 500 μm, 700 μm, 900 μm, 1mm, and any two values, preferably 50 to 500 μm. In the invention, the micro-nano structure is beneficial to the improvement of the wettability of the surface, for example, when the flat surface is hydrophilic (less than 90 degrees), the surface with the micro-nano structure has capillary action on water, so that the water can be further infiltrated, and further a more hydrophilic or even super-hydrophilic state is shown.
In some embodiments of the invention, preferably, the hydrophilic side groups on the surface of the hydrophilic sheet have a surface grafting ratio of 10 to 50wt%, for example, 10wt%, 20wt%, 30wt%, 35wt%, 40wt%, 45wt%, 50wt%, and any value in the range of any two values, preferably 30 to 40wt%. The use of the preferable conditions is more advantageous for improving the hydrophilicity of the hydrophilic sheet.
In the present invention, the surface grafting ratio parameter is measured by using the energy spectrum fitting of Japanese Hitachi S4800 scanning electron microscope without special description to measure the content of the main element of the grafting component of the hydrophilic sheet, and the content of the graft in the hydrophilic sheet is reversely deduced through the molecular formula of the graft to be used as the surface grafting ratio.
In the present invention, the hydrophilic side group has a wide selection range as long as the hydrophilic side group contains a hydrophilic group. Preferably, the hydrophilic side group is a hydrophilic group containing a carbon-carbon double bond and a heteroatom of at least one element selected from oxygen, sulfur, nitrogen, silicon, and halogen.
In the present invention, the halogen is at least one selected from fluorine, chlorine, bromine and iodine, preferably fluorine and/or chlorine, unless otherwise specified.
In some embodiments of the present invention, preferably, the monomer having a hydrophilic side group is selected from at least one of an organic acid, an organic acid derivative, and a vinyl silane. Wherein the organic acid includes, but is not limited to, carboxylic acid, sulfonic acid, sulfinic acid, thiocarboxylic acid, and the like.
In some embodiments of the present invention, preferably, the organic acid derivative is selected from at least one of an anhydride, an ester, and a salt of an organic acid.
In some embodiments of the present invention, preferably, the monomer of the hydrophilic side group is selected from at least one of maleic anhydride and/or its derivatives, acrylic acid and/or its derivatives, methacrylic acid and/or its derivatives, vinyl acetate, alkenylsulfonic acid and/or its derivatives, p-styrenecarboxylic acid and/or its derivatives, p-styreneacetic acid and/or its derivatives, itaconic acid, oleic acid, and arachidonic acid.
In some embodiments of the invention, preferably, the vinyl silane has the formula: CH (CH) 2 ＝CH 2 (CH 2 ) n SiX 3 Wherein n=0 to 3, and x is selected from at least one of chloro, methoxy, ethoxy, and acetoxy.
In some embodiments of the invention, preferably, the vinylsilane is selected from vinyltrimethoxysilane and/or vinyltriethoxysilane.
According to the invention, preferably the separator sheet has a water contact angle of < 30 °, preferably 0-15 °, more preferably 0 °; the evaporation rate of water is less than or equal to 50 percent, preferably 5 to 30 percent; after 24 hours, the volatility of the volatile gas is less than or equal to 40 percent, preferably 0.1 to 30 percent.
In the present invention, the volatile gas includes, without being limited to H2 S 、NH 3 NMHC, etc.
In the invention, under the condition of no special condition, the water contact angle parameter adopts an EASY DROP contact angle tester of KRUSS company in Germany, the measurement range is 1-180 degrees, the resolution is +/-0.1 degrees, a dynamic contact angle measurement mode is adopted, deionized water DROPs or white oil DROPs with the fixed volume of 2 mu L each time are dripped on a hydrophilic sheet, the calculated initial contact angle is the contact angle measurement value of the hydrophilic sheet, and the average value is calculated by parallel measurement for 6 times.
In the present invention, the water evaporation rate parameter test is performed without special description: 100g of deionized water was introduced into a surface dish having a diameter of 30cm, and the separator sheet was placed in the surface dish and placed in an oven at 40℃for 12 hours; the remaining water was then weighed and the evaporation efficiency (n) was calculated by the formula: n= (m 1-m 2) ×100%/m1, where m1 and m2 are the weight/g of water in the dish before and after evaporation, respectively.
In the present invention, the volatile gas volatility parameter test is performed without special description:
GB/T16157-1996 method for measuring particulate matters in exhaust gas of fixed pollution sources and sampling gaseous pollutants;
a spectrophotometry for measuring the ammonia in the environment air and the exhaust gas of HJ 533-2009 by using a nano reagent;
determination of non-methane total hydrocarbons in fixed pollution source exhaust gas by gas chromatography for HJ/T38-1999;
GB/T14675-1993 three-point comparative odor bag method for measuring air quality malodor;
air and exhaust gas detection analysis method fourth edition supplement edition;
the measuring instrument is selected from: an automatic smoke (gas) sampling instrument, an ultraviolet-visible spectrophotometer, a gas chromatograph and a gas six-way distributor;
the sampling method comprises the following steps: filling 100kg of oil refining wastewater into a sewage tank with the diameter of 1m, covering different isolation sheets on the surface of the wastewater, starting to work after the sheets are covered and installed, and monitoring once after 1 h; after 24h, the test was again carried out.
According to a particularly preferred embodiment of the invention, the insulation assembly is assembled from an insulation sheet and a frame, said insulation sheet being composed of a plurality of hydrophilic sheets, the surface of said insulation sheet being provided with holes and the aperture ratio being < 10%;
the hydrophilic sheet is a foaming polypropylene sheet with a plurality of micro-nano structures on the surface, and hydrophilic side groups are grafted on the micro-nano structures;
Wherein, on the surface of the hydrophilic sheet, the surface grafting rate of the hydrophilic side group is 10-50wt%;
wherein the average pore diameter of the surface of the foaming polypropylene sheet is 10-100 mu m; bending strength is 0.1-1MPa; the thickness is 0.1-1cm;
wherein the hydrophilic sheet is prepared by the following method: contacting the foaming polypropylene sheet with an etching agent and performing first drying to form a surface with a micro-nano structure on the foaming polypropylene sheet so as to obtain a modified foaming polypropylene sheet; and coating a monomer with a hydrophilic side group on the modified foaming polypropylene sheet, and then carrying out microwave irradiation to graft the hydrophilic side group on the micro-nano structure of the foaming polypropylene sheet.
The second aspect of the present invention provides a method for producing an insulation assembly, comprising the steps of:
(1) Contacting a polypropylene sheet with an etchant and performing first drying to form a surface with a micro-nano structure on the polypropylene sheet to obtain a modified polypropylene sheet;
(2) Coating a monomer with a hydrophilic side group on the surface of the modified polypropylene sheet, and then carrying out microwave irradiation to graft the hydrophilic side group on the micro-nano structure of the modified polypropylene sheet so as to obtain a hydrophilic sheet with a hydrophilic surface;
(3) Assembling a separation sheet and a frame, wherein the separation sheet consists of a plurality of hydrophilic sheets, so as to obtain a separation assembly;
wherein, the surface of the isolation sheet is provided with holes, and the aperture ratio is less than 10%;
wherein, in the hydrophilic sheet, the surface grafting rate of the hydrophilic side group on the hydrophilic sheet is 10-50wt%.
In the method provided by the invention, the hydrophilic side group can be grafted on the modified polypropylene sheet without adding an initiator. Namely, the hydrophilic sheet prepared by the method provided by the invention does not contain initiator residues, and the hydrophilicity of the hydrophilic sheet is improved on the premise that the mechanical properties of the hydrophilic sheet are not affected. The isolating sheet in the isolating component provided by the invention is a super-hydrophilic polypropylene sheet, and the surface of the sheet is completely attached to the contact surface because the sheet can be completely infiltrated with the contact surface, so that the isolating sheet has no vapor pressure, and the evaporation of water and the volatilization of volatile gas are obviously inhibited.
In the present invention, in the step (1), the polypropylene sheet is defined as described above, and the present invention will not be described in detail.
In some embodiments of the present invention, preferably, in step (1), the weight ratio of the polypropylene sheet and the etchant is 0.1 to 100:100, for example, any value in the range of 0.1:100, 0.5:100, 1:100, 5:100, 10:100, 20:100, 30:100, 40:100, 50:100, 60:100, 80:100, 100:100, and any two values, preferably 0.5-50:100, more preferably 1-30:100. the etching agent uniformly covers the surface of the polypropylene sheet by adopting the preferable weight ratio, which is more favorable for the full contact and mixing of the etching agent and the polypropylene sheet, thereby being favorable for forming the micro-nano structure on the surface of the polypropylene sheet.
In the invention, the etching agent has a wide selection range for the type of the etching agent, as long as the etching agent can etch on the surface of the polypropylene sheet. Preferably, the etchant is a polar organic solvent selected from at least one of toluene, xylene, diphenyl ether, butyl acetate, isoamyl acetate, n-heptane, n-octane, and decalin.
In the present invention, the conditions for the contact have a wide range of choices. Preferably, in step (1), the contacting conditions include: the temperature is 15-70deg.C, preferably 20-60deg.C; the time is 1-24 hours, preferably 5-15 hours.
In the present invention, the manner of contact has a wide range of options. Preferably, the contacting is by soaking; namely, the polypropylene sheet is soaked in the etchant, wherein the soaking temperature is 15-70 ℃ and the soaking time is 1-24h.
In the present invention, the first drying is intended to remove the etchant from the contact product. Preferably, the first drying conditions include: the temperature is 80-120deg.C, preferably 80-100deg.C; the time is 1-10 hours, preferably 1-5 hours.
In some embodiments of the present invention, preferably, in step (2), the weight ratio of the monomer to the modified polypropylene sheet is 10 to 50:100, e.g., 10:100, 15:100, 20:100, 25:100, 30:100, 35:100, 40:100, 45:100, 50:100, and any value in the range of any two values, preferably 10-30:100. the adoption of the preferable weight ratio is favorable for the full mixing and grafting reaction of the raw materials, thereby improving the surface grafting rate of the hydrophilic side group in the hydrophilic sheet.
In the present invention, in the step (2), the monomer is defined as above, and this is not repeated in the present invention.
In the present invention, the mode of the coating has a wide range of options, as long as the monomer having a hydrophilic side group is uniformly coated on the modified polypropylene sheet. Preferably, the coating is performed by mechanical direct spraying and liquid spraying above the melting point of the monomer.
In one embodiment of the invention, the monomer having a hydrophilic side group is applied to the surface of the modified polypropylene sheet by mechanical spraying. Since the monomer of the hydrophilic side group is liquefied and gasified in the microwave irradiation process, the hydrophilic side group is uniformly grafted on the modified polypropylene sheet in the gasification process.
In the present invention, the conditions of the microwave irradiation have a wide range of choices, as long as the monomer of the hydrophilic side group is grafted on the modified polypropylene sheet. Preferably, the conditions of the microwave irradiation include: the irradiation power is 1500-27000W, preferably 1500-15000W; the irradiation time is 1s-1min, preferably 1-30s.
In some embodiments of the invention, preferably, the number of microwave irradiation is not less than 1, preferably 1 to 5.
According to the present invention, preferably, the microwave irradiation process may be performed a plurality of times, preferably 1 to 5 times, using the same irradiation power and the same irradiation time. The foaming polypropylene sheet can repeatedly carry out the process of grafting monomer gasification-grafting by cycling for a plurality of times, which is beneficial to the uniformity of redundant grafting monomers and the improvement of grafting rate.
In the present invention, the microwave irradiation is performed in various microwave reactors existing in the prior art, without being specifically described.
In some embodiments of the present invention, preferably, in step (3), the manner of composition includes: and splicing the plurality of hydrophilic sheets to obtain the separation sheet.
In the present invention, the type of the frame and the separator are defined as described above, and the present invention is not described in detail herein.
According to the invention, preferably, the method further comprises: and before the assembly, cleaning and secondary drying the microwave irradiation product to remove unreacted hydrophilic side group monomers in the microwave irradiation product.
In the present invention, the mode of the cleaning has a wide selection range, and the residual hydrophilic side group monomer can be removed.
In some embodiments of the present invention, it is preferable that the microwave-irradiated product is immediately soaked with a washing liquid having a volume exceeding that of the microwave-irradiated product at a high temperature for 5 to 15 minutes, and then excess moisture is removed using a filtering device; repeatedly cleaning for 2-6 times to obtain the cleaned microwave irradiation product.
In the invention, the cleaning liquid has a wide selection range. Preferably, the cleaning liquid is selected from water and/or organic solvents, preferably at least one selected from alcohols, ketones, esters and water, more preferably alcohols and/or water.
According to the invention, preferably, the method further comprises: when the monomer of the hydrophilic side group is organic acid, anhydride and/or ester of the organic acid, salifying the second dried product with alkali, and cleaning and drying the salified product for the third time, so as to convert the grafted hydrophilic side group into organic acid salt, and further improve the hydrophilicity of the hydrophilic sheet.
In the present invention, the kind of the base may be widely selected, and the organic acid, the acid anhydride and/or the ester of the organic acid may be converted into a salt by a salification reaction. Preferably, the base is selected from the group consisting of hydroxides and/or aqueous ammonia, preferably hydroxides.
In some embodiments of the present invention, preferably, the hydroxide is selected from at least one of sodium hydroxide, potassium hydroxide, barium hydroxide, lithium hydroxide, strontium hydroxide, calcium hydroxide, iron hydroxide, ferrous hydroxide, zinc hydroxide, magnesium hydroxide, cobalt hydroxide, gold hydroxide, aluminum hydroxide, copper hydroxide, beryllium hydroxide, and rare earth hydroxide, preferably at least one of sodium hydroxide, potassium hydroxide, barium hydroxide, lithium hydroxide, strontium hydroxide, and calcium hydroxide.
In some embodiments of the invention, preferably, the weight ratio of the base to the modified polypropylene sheet is from 10 to 25:100, e.g., 10:100, 12:100, 15:100, 16:100, 18:100, 20:100, 22:100, 24:100, 25:100, and any value in the range of any two values, preferably 10-20:100.
in the present invention, the base may be directly salified with the third dried product, or may be preferably present in the form of a basic solution, i.e., salified with an aqueous solution containing a base, for better salification.
In some embodiments of the invention, preferably, the alkali liquor has a weight ratio of alkali to water of 0.1 to 100:100, for example, any of the ranges of 0.1:100, 0.5:100, 1:100, 2:100, 3:100, 5:100, 10:100, 20:100, 30:100, 40:100, 50:100, 80:100, 100:100, and any two values, preferably 0.5-50:100, preferably 1-30:100. the adoption of the preferable weight ratio is more beneficial to improving the efficiency of the salinization reaction and improving the hydrophilicity of the hydrophilic sheet.
In the present invention, the conditions for the salination reaction have a wide range of choice, and preferably the salination reaction time is 1 to 30min, preferably 5 to 10min. In the present invention, the temperature and pressure of the salination reaction are not limited, and are generally normal temperature and pressure.
In some embodiments of the invention, it is preferred that the product of the salination reaction is immediately soaked with a solvent having a volume exceeding that of the grafted polypropylene sheet for 5-15min, and then excess moisture is removed using a filtration device; repeating the process for 2 to 6 times to obtain a clean salinization reaction product.
In the present invention, the second drying and the third drying may be both air drying and normal temperature drying, which are not described in detail herein. Preferably, the second drying and the third drying are both at a temperature not exceeding 140 ℃ (140+ DEG C for the melting point of the random copolymer polypropylene) to avoid melting the polypropylene sheet.
The isolation component provided by the first aspect of the invention or the isolation component prepared by the method provided by the second aspect is applied to waterproof and antifouling.
In some embodiments of the invention, the spacer assembly preferably fits snugly against the contact surface.
In the present invention, a wide selection range is provided for the kind of the contact surface including but not limited to the surface of water, the surface of a sewage tank, and the like.
The isolating sheet containing the hydrophilic sheet provided by the invention has super-hydrophilic property compared with the polypropylene sheet; meanwhile, the separation sheet provided by the invention does not reduce the molecular weight of the polypropylene sheet, does not have monomer residues of hydrophilic side groups, does not introduce an initiator, is colorless and odorless, greatly improves the hydrophilicity, is durable and stable, is applied to the waterproof and antifouling fields, and can obviously reduce the water evaporation rate and the volatile gas evaporation rate.
The present invention will be described in detail by examples.
The water contact angle parameter adopts an EASY DROP contact angle tester of KRUSS company of Germany, the measurement range is 1-180 degrees, the resolution is +/-0.1 degrees, a dynamic contact angle measurement mode is adopted, deionized water DROPs or white oil DROPs with a fixed volume of 2 mu L each time are dripped on a hydrophilic sheet, the calculated initial contact angle is taken as a contact angle measurement value of the hydrophilic sheet, the parallel measurement is carried out for 6 times, and the average value is calculated.
The surface grafting ratio parameter adopts the energy spectrum accessory of Japanese Hitachi S4800 scanning electron microscope to measure the content of the main element of the grafting component of the hydrophilic sheet, and the content of the grafting in the hydrophilic sheet is reversely pushed by the molecular formula of the grafting to be used as the surface grafting ratio.
Water evaporation rate parameter test: 100g of deionized water was introduced into a surface dish having a diameter of 30cm, and the separator sheet was placed in the surface dish and placed in an oven at 40℃for 12 hours; the remaining water was then weighed and the evaporation efficiency (n) was calculated by the formula: n= (m 1-m 2) ×100%/m1, where m1 and m2 are the weight/g of water in the dish before and after evaporation, respectively.
In the present invention, the volatile gas volatility parameter test is performed without special description:
GB/T16157-1996 method for measuring particulate matters in exhaust gas of fixed pollution sources and sampling gaseous pollutants;
a spectrophotometry for measuring the ammonia in the environment air and the exhaust gas of HJ 533-2009 by using a nano reagent;
determination of non-methane total hydrocarbons in fixed pollution source exhaust gas by gas chromatography for HJ/T38-1999;
GB/T14675-1993 three-point comparative odor bag method for measuring air quality malodor;
air and exhaust gas detection analysis method fourth edition supplement edition;
the measuring instrument is selected from: an automatic smoke (gas) sampling instrument, an ultraviolet-visible spectrophotometer, a gas chromatograph and a gas six-way distributor;
the sampling method comprises the following steps: filling 100kg of oil refining wastewater into a sewage tank with the diameter of 1m, covering different isolation sheets on the surface of the wastewater, starting to work after the sheets are covered and installed, and monitoring once after 1 h; after 24h, the test was again carried out.
The foaming polypropylene sheet-1 is prepared by foaming injection polypropylene sheet-1 by supercritical carbon dioxide; wherein the random copolymer polypropylene content in the foamed polypropylene sheet-1 is 90wt%, the surface average pore diameter is 50 μm, and the bending strength is 0.15MPa.
The foaming polypropylene sheet-2 is prepared by foaming injection polypropylene sheet-2 by supercritical carbon dioxide; wherein the random copolymer polypropylene content in the foamed polypropylene sheet-2 is 70wt%, the surface average pore diameter is 40 μm, and the bending strength is 0.45MPa.
The foaming polypropylene sheet-3 is prepared by foaming injection polypropylene sheet-3 by supercritical carbon dioxide; wherein the random copolymer polypropylene content in the foamed polypropylene sheet-3 is 80wt%, the surface average pore diameter is 25 μm, and the flexural strength is 0.33MPa.
Injection molded polypropylene sheet-1 (a blend of 70wt% random copolymer polypropylene E02ES with 30wt% POE), purchased from New materials Inc. of Shensai, jiangsu, had a smooth and flat surface and a flexural strength of 10.5MPa.
Injection molded polypropylene sheet-2 (blend of 90wt% random copolymer polypropylene E02ES and 10wt% homo polypropylene T30S), purchased from Zhejiang Jiaxing New Hengtai New Material Co., ltd., smooth and flat surface, flexural strength 17.5MPa.
Injection molded polypropylene sheet-3 (random copolymer polypropylene E02 ES) purchased from Ningbo micro new material technology Co., ltd., smooth and flat surface, and bending strength of 15.0MPa.
Xylene (national pharmaceutical group chemicals limited), decalin (national pharmaceutical group chemicals limited), maleic anhydride (national pharmaceutical group chemicals limited), acrylic acid (national pharmaceutical group chemicals limited), methacrylic acid (national pharmaceutical group chemicals limited), 2-acrylamido-2-methylpropanesulfonic acid (national pharmaceutical group chemicals limited), sodium hydroxide (national pharmaceutical group chemicals limited), potassium hydroxide (national pharmaceutical science limited), calcium hydroxide (western chain sciences limited), acetone (western chain sciences limited), sodium chloride (national pharmaceutical group chemicals limited), vinyltrimethoxysilane (tokyo chemical industry Co., ltd.); the other various raw materials are commercially available.
Physical properties of the hydrophilic sheet and the separator sheet obtained in examples and comparative examples are shown in Table 1.
Example 1
(1) 10g of polypropylene sheet (foamed polypropylene sheet-1, water contact angle of 108 ℃) is soaked in 100g of etchant (dimethylbenzene), sealed and soaked for 12 hours at the temperature of 25 ℃ of an incubator, and then placed in a blast drying oven at the temperature of 90 ℃ for 2 hours, so as to obtain a modified polypropylene sheet;
(2) Dissolving 10 parts by weight of alkali (sodium hydroxide) in 50 parts by weight of deionized water to obtain alkali liquor;
10 parts by weight of maleic anhydride powder is coated on the surface of 100 parts by weight of modified polypropylene sheet by adopting a mechanical spraying mode, and microwave irradiation is carried out for 25s under the irradiation power of 2000W, and the cycle is carried out for 2 times, and each time is 1min apart; soaking the product of microwave irradiation in deionized water for 10min, replacing the deionized water for 3 times to ensure that maleic anhydride which does not participate in the grafting reaction is removed, and then placing the cleaning product in 80 ℃ for air blast drying and drying;
salinization reaction is carried out on the dried product and the alkali liquor for 5min, the salinization reaction product is soaked in deionized water for 10min, the deionized water is replaced for 3 times to ensure that unreacted alkali is removed, and then the cleaning product is placed at 80 ℃ for blast drying, so as to obtain a hydrophilic sheet S1;
(3) The separator sheet Q1 composed of a plurality of hydrophilic sheets S1 was assembled with a frame to obtain a separator assembly, wherein the surface of the separator sheet Q1 was provided with holes (average diameter: 0.5 cm) and the aperture ratio was 3%.
The volatile gas volatilization rate of the separator Q1 is shown in table 2.
Example 2
(1) 10g of polypropylene sheet (foamed polypropylene sheet-1, water contact angle of 108 ℃) is soaked in 100g of etchant (dimethylbenzene), sealed and soaked for 12 hours at the temperature of 25 ℃ of an incubator, and then placed in a blast drying oven at the temperature of 90 ℃ for 2 hours, so as to obtain a modified polypropylene sheet;
(2) Dissolving 10 parts by weight of alkali (potassium hydroxide) in 50 parts by weight of deionized water to obtain alkali liquor;
coating 20 parts by weight of maleic anhydride powder on the surface of 100 parts by weight of modified polypropylene sheet by adopting a mechanical spraying mode, and carrying out microwave irradiation for 20s under the irradiation power of 5000W, wherein the cycle is carried out for 3 times, and each time is 1min apart; soaking the product of microwave irradiation in deionized water for 10min, replacing the deionized water for 3 times to ensure that maleic anhydride which does not participate in the grafting reaction is removed, and then placing the cleaning product in 80 ℃ for air blast drying and drying;
salinization reaction is carried out on the dried product and the alkali liquor for 5min, the salinization reaction product is soaked in deionized water for 10min, the deionized water is replaced for 3 times to ensure that unreacted alkali is removed, and then the cleaning product is placed at 80 ℃ for blast drying, so as to obtain a hydrophilic sheet S2;
(3) The separator sheet Q2 composed of a plurality of hydrophilic sheets S2 was assembled with a frame to obtain a separator assembly, wherein the surface of the separator sheet Q2 was provided with holes (average diameter: 0.5 cm) and the aperture ratio was 4%.
The volatile gas volatilization rate of the separator Q2 is shown in table 2.
Example 3
(1) 10g of polypropylene sheet (foamed polypropylene sheet-2, water contact angle of 112 ℃) is soaked in 90g of etchant (decalin), the mixture is soaked in a sealed way for 4 hours at the temperature of 50 ℃ in an incubator, and then the mixture is placed in a blast drying oven at the temperature of 80 ℃ for 2 hours, so that a modified polypropylene sheet is obtained;
(2) Dissolving 25 parts by weight of alkali (potassium hydroxide) in 100 parts by weight of deionized water to obtain alkali liquor;
coating 30 parts by weight of 2-acrylamide-2-methylpropanesulfonic acid powder on the surface of 100 parts by weight of modified polypropylene sheet by adopting a mechanical spraying mode, and carrying out microwave irradiation for 10s under the irradiation power of 10000W, wherein the cycle is carried out for 3 times, and each time is 1min apart; soaking the product of microwave irradiation in deionized water for 10min, replacing the deionized water for 3 times to ensure that the 2-acrylamide-2-methylpropanesulfonic acid which does not participate in the grafting reaction is removed, and then placing the cleaning product in 80 ℃ for air blast drying;
salinization reaction is carried out on the dried product and the alkali liquor for 5min, the salinization reaction product is soaked in deionized water for 10min, the deionized water is replaced for 3 times to ensure that unreacted alkali is removed, and then the cleaning product is placed at 80 ℃ for blast drying, so as to obtain a hydrophilic sheet S3;
(3) The separator sheet Q3 composed of a plurality of hydrophilic sheets S3 was assembled with a frame to obtain a separator assembly, wherein the surface of the separator sheet Q3 was provided with holes (average diameter: 0.5 cm) and the aperture ratio was 5%.
Example 4
(1) 10g of polypropylene sheet (foamed polypropylene sheet-3, water contact angle of 108 ℃) is soaked in 90g of etchant (decalin), the mixture is soaked in a sealed way for 10 hours at the temperature of 25 ℃ in an incubator, and then the incubator is placed in a blast drying oven at the temperature of 80 ℃ for 2 hours, so that a modified polypropylene sheet is obtained;
(2) Dissolving 20 parts by weight of alkali (potassium hydroxide) in 50 parts by weight of deionized water to obtain alkali liquor;
coating 50 parts by weight of methacrylic acid liquid on the surface of 100 parts by weight of modified polypropylene sheet by adopting a mechanical spraying mode, and performing microwave irradiation for 3s at an irradiation power of 15000W, and circulating for 5 times at intervals of 1min; soaking the product of microwave irradiation in deionized water for 10min, replacing the deionized water for 3 times to ensure that methacrylic acid which does not participate in the grafting reaction is removed, and then placing the cleaning product in 80 ℃ for forced air drying and drying to obtain a hydrophilic sheet S4;
(3) The separator sheet Q4 composed of a plurality of hydrophilic sheets S4 and the frame were assembled to obtain a separator assembly, wherein the surface of the separator sheet Q4 was provided with holes (average diameter of 0.5 cm) and the aperture ratio was 5%.
Example 5
(1) 10g of polypropylene sheet (foamed polypropylene sheet-3, water contact angle of 108 ℃) is soaked in 90g of etchant (decalin), the mixture is soaked in a sealed way for 10 hours at the temperature of 25 ℃ in an incubator, and then the incubator is placed in a blast drying oven at the temperature of 80 ℃ for 2 hours, so that a modified polypropylene sheet is obtained;
(2) Coating 40 parts by weight of vinyl trimethoxy silane liquid on the surface of 100 parts by weight of modified polypropylene sheet by adopting a mechanical spraying mode, and carrying out microwave irradiation for 2s under the irradiation power of 20000W, and circulating for 4 times at intervals of 1min each time; soaking the product of microwave irradiation in deionized water for 10min, replacing the deionized water for 3 times to ensure that vinyl trimethoxy silane which does not participate in the grafting reaction is removed, and then placing the cleaning product in 80 ℃ for forced air drying and drying to obtain a hydrophilic sheet S5;
(3) The separator sheet Q5 composed of a plurality of hydrophilic sheets S5 and a frame were assembled to obtain a separator assembly, wherein the surface of the separator sheet Q5 was provided with holes (average diameter: 0.5 cm) and the aperture ratio was 5%.
Example 6
According to the method of example 1, except that in step (1), 10g of the polypropylene sheet (foamed polypropylene sheet-1, water contact angle of 108 °) was replaced with 35g of the polypropylene sheet (foamed polypropylene sheet-1, water contact angle of 108 °), the other conditions were the same, to obtain a hydrophilic sheet S6 and a separator sheet Q6.
Example 7
The procedure of example 1 was followed except that in step (2), 10 parts by weight of the monomer (maleic anhydride) having a hydrophilic side group was replaced with 50 parts by weight of the monomer (maleic anhydride) having a hydrophilic side group, and the other conditions were the same, to obtain a hydrophilic sheet S7 and a separator sheet Q7.
Example 8
The procedure of example 1 was followed, except that in step (2), the conditions of microwave irradiation were modified as follows: the hydrophilic sheet S8 and the spacer sheet Q8 were obtained by microwave irradiation at an irradiation power of 27000W for 1S under the same conditions.
Comparative example 1
According to the method of example 1, except that there are no steps (1) - (2), a polypropylene sheet (foamed polypropylene sheet-1, water contact angle of 108 °) was used as the hydrophilic sheet DS1;
In the step (3), the separator DQ1 composed of the plurality of hydrophilic sheets DS1 and the frame are assembled to obtain a separator, wherein the separator DQ1 has holes on the surface thereof, and the aperture ratio is 3%.
The volatile gas volatility of the separator sheet DQ1 is shown in table 2.
Comparative example 2
According to the method of example 1, except that there was no step (1), 10 parts by weight of maleic anhydride powder was directly applied to 100 parts by weight of a polypropylene sheet (foamed polypropylene sheet-1, water contact angle of 108 °) by mechanical spraying to obtain a hydrophilic sheet DS2;
in the step (3), the separator DQ2 composed of the plurality of hydrophilic sheets DS2 and the frame are assembled to obtain a separator, wherein the separator DQ2 has holes on the surface thereof, and the aperture ratio is 3%.
Comparative example 2'
The procedure of example 1 was followed except that the expanded polypropylene sheet-1 was replaced with an injection-molded polypropylene sheet-1, and the remaining conditions were the same, to obtain a hydrophilic sheet DS2 'and a separator sheet DQ2'.
Comparative example 3
According to the method of example 2, except that there was no step (1), 20 parts by weight of maleic anhydride powder was directly applied to 100 parts by weight of a polypropylene sheet (foamed polypropylene sheet-1, water contact angle of 108 °) by mechanical spraying to obtain a hydrophilic sheet DS3;
In the step (3), the separator DQ3 composed of the plurality of hydrophilic sheets DS3 is assembled with the frame to obtain a separator, wherein the surface of the separator DQ3 is provided with holes, and the aperture ratio is 3%.
Comparative example 4
According to the method of example 3, except that there are no steps (1) - (2), a polypropylene sheet (foamed polypropylene sheet-2, water contact angle of 112 °) was used as the hydrophilic sheet DS4;
in the step (3), the spacer DQ4 composed of the plurality of hydrophilic sheets DS4 and the frame are assembled to obtain the spacer assembly, wherein the surface of the spacer DQ4 is provided with holes, and the aperture ratio is 5%.
Comparative example 5
According to the method of example 3, except that there was no step (1), 30 parts by weight of 2-acrylamido-2-methylpropanesulfonic acid powder was directly applied to 100 parts by weight of a polypropylene sheet (foamed polypropylene sheet-2, water contact angle of 112 °) by mechanical spraying to obtain a hydrophilic sheet DS5;
in the step (3), the spacer DQ5 composed of the plurality of hydrophilic sheets DS5 and the frame are assembled to obtain the spacer assembly, wherein the surface of the spacer DQ5 is provided with holes, and the aperture ratio is 5%.
Comparative example 5'
The procedure of example 3 was followed except that the expanded polypropylene sheet-2 was replaced with the injection-molded polypropylene sheet-2, and the remaining conditions were the same, to obtain a hydrophilic sheet DS5 'and a separator sheet DQ5'.
Comparative example 6
According to the method of example 4, except that there are no steps (1) - (2), a polypropylene sheet (foamed polypropylene sheet-3, water contact angle of 108 °) was used as the hydrophilic sheet DS6;
in the step (3), the spacer DQ6 composed of the plurality of hydrophilic sheets DS6 and the frame are assembled to obtain the spacer assembly, wherein the surface of the spacer DQ6 is provided with holes, and the aperture ratio is 5%.
Comparative example 7
According to the method of example 4, except that step (1) was not included, 50 parts by weight of the methacrylic acid liquid was directly applied to 100 parts by weight of a polypropylene sheet (foamed polypropylene sheet-3, water contact angle of 108 °) by mechanical spraying to obtain a hydrophilic sheet DS7;
in the step (3), the spacer DQ7 composed of the plurality of hydrophilic sheets DS7 and the frame are assembled to obtain the spacer assembly, wherein the surface of the spacer DQ7 is provided with holes, and the aperture ratio is 5%.
Comparative example 7'
The procedure of example 4 was followed except that the expanded polypropylene sheet-3 was replaced with an injection-molded polypropylene sheet-3, and the remaining conditions were the same, to obtain a hydrophilic sheet DS7 'and a separator sheet DQ7'.
Comparative example 8
According to the method of example 5, except that there was no step (1), 40 parts by weight of vinyltrimethoxysilane liquid was applied to 100 parts by weight of a polypropylene sheet (foamed polypropylene sheet-3, water contact angle of 108 °) by mechanical spraying to obtain a hydrophilic sheet DS8;
In the step (3), the spacer DQ8 composed of the plurality of hydrophilic sheets DS8 and the frame are assembled to obtain the spacer assembly, wherein the surface of the spacer DQ8 is provided with holes, and the aperture ratio is 5%.
TABLE 1
As can be seen from the data in Table 1, compared with the polypropylene sheet, the hydrophilic sheet provided by the invention can effectively improve the hydrophilicity of the hydrophilic sheet to achieve super hydrophilicity on the premise of ensuring the unchanged mechanical properties; meanwhile, the isolating sheet material composed of the hydrophilic sheet material has very small water contact angle and water evaporation rate, and especially, the comprehensive performance of the isolating component is further improved by adjusting the surface grafting rate parameter of the hydrophilic sheet material in the isolating sheet material, so that the water evaporation rate of the isolating component is reduced.
In comparison with example 6, example 1 further improved the hydrophilic property of the hydrophilic sheet by limiting the weight ratio of the polypropylene sheet to the etchant within the preferred protective range by reducing the water contact angle and improving the grafting ratio, thereby effectively reducing the water evaporation rate of the separator sheet containing the hydrophilic sheet.
In comparison with example 7, example 1 further improves the hydrophilic property of the hydrophilic sheet by limiting the weight ratio of the monomer to the modified polypropylene sheet within a preferred protective range, thereby effectively reducing the water evaporation rate of the separator sheet containing the hydrophilic sheet.
In comparison with example 8, example 1 further improves the hydrophilic property of the hydrophilic sheet by reducing the water contact angle and improving the grafting ratio by limiting the conditions of microwave irradiation within a preferred protective range, thereby effectively reducing the water evaporation rate of the separator sheet containing the hydrophilic sheet.
TABLE 2
Note that: the concentration after 1h refers to the concentration of volatile gas volatilized out after the isolating sheet is covered for 1 h;
the concentration after 24 hours refers to the concentration at which the volatile gas volatilizes after the separator is covered for 24 hours.
As can be seen from the data in Table 2, the release sheet provided by the present invention can significantly inhibit the volatilization of the volatile gas, that is, the volatilization rate of the volatile gas is less than or equal to 40% after 24 hours of use of the release sheet provided by the present invention, compared with comparative example 1.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (17)
1. The isolation assembly is characterized by being assembled by an isolation sheet and a frame, wherein the isolation sheet consists of a plurality of hydrophilic sheets, the surface of the isolation sheet is provided with holes, and the aperture ratio is less than 10%;
The hydrophilic sheet is a polypropylene sheet with a plurality of micro-nano structures on the surface, and hydrophilic side groups are grafted on the micro-nano structures;
wherein, on the surface of the hydrophilic sheet, the surface grafting rate of the hydrophilic side group is 10-50wt%;
wherein the polypropylene sheet is a foamed polypropylene sheet; the average pore diameter of the surface of the foaming polypropylene sheet is 10-100 mu m; bending strength is 0.1-1MPa; the thickness is 0.1-1cm;
wherein the hydrophilic sheet is prepared by the following method: contacting the polypropylene sheet with an etchant and performing first drying to form a surface with a micro-nano structure on the polypropylene sheet so as to obtain a modified polypropylene sheet; coating a monomer with a hydrophilic side group on the surface of the modified polypropylene sheet, and then carrying out microwave irradiation to graft the hydrophilic side group on the micro-nano structure of the modified polypropylene sheet so as to obtain the hydrophilic sheet with a hydrophilic surface; the conditions of the contacting include: the temperature is 15-70 ℃ and the time is 1-24h; the conditions of the microwave irradiation include: the irradiation power is 1500-27000W; the irradiation time is 1s-1min.
2. The insulation assembly of claim 1, wherein the insulation sheet is spliced from a plurality of the hydrophilic sheets;
And/or the average diameter of the holes is 0.1-1cm;
and/or the aperture ratio is less than or equal to 5 percent.
3. The insulation assembly of claim 2, wherein the pores have an average diameter of 0.5-1cm;
and/or, the aperture ratio is 3-5%.
4. The isolation assembly of claim 1, wherein,
the average pore diameter of the surface of the foaming polypropylene sheet is 20-60 mu m; bending strength is 0.1-0.5MPa; the thickness is 0.1-1cm;
and/or the foaming polypropylene sheet is prepared by foaming at least one selected from a homo-polypropylene sheet, a random copolymerization polypropylene sheet and an impact copolymerization polypropylene sheet with the polypropylene content more than or equal to 50 wt%;
and/or, each micro-nano structure has a length of 1nm-100 μm; the depth is 1 μm-1mm.
5. The isolation assembly of claim 1, wherein each micro-nanostructure has a length of 500nm-50 μιη; the depth is 50-500 μm.
6. The barrier assembly of claim 1, wherein the hydrophilic side group is a hydrophilic group containing a carbon-carbon double bond and a heteroatom of at least one element selected from oxygen, sulfur, nitrogen, silicon, and halogen.
7. The insulation assembly of any of claims 1-6, wherein the insulation sheet has a water contact angle < 30 °; the evaporation rate of water is less than or equal to 50 percent; after 24 hours, the volatility of the volatile gas is less than or equal to 40 percent.
8. The insulation assembly of claim 7, wherein the insulation sheet has a water contact angle of 0-15 °; the evaporation rate of water is 5-30%; after 24 hours, the volatile gas volatilization rate is 0.1-30%.
9. The insulation assembly of claim 8, wherein the insulation sheet has a water contact angle of 0 °.
10. A method of making an insulation assembly, comprising the steps of:
(1) Contacting a polypropylene sheet with an etchant and performing first drying to form a surface with a micro-nano structure on the polypropylene sheet to obtain a modified polypropylene sheet; the conditions of the contacting include: the temperature is 15-70 ℃ and the time is 1-24h;
(2) Coating a monomer with a hydrophilic side group on the surface of the modified polypropylene sheet, and then carrying out microwave irradiation to graft the hydrophilic side group on the micro-nano structure of the modified polypropylene sheet so as to obtain a hydrophilic sheet with a hydrophilic surface; the conditions of the microwave irradiation include: the irradiation power is 1500-27000W; the irradiation time is 1s-1min;
(3) Assembling a separation sheet and a frame, wherein the separation sheet consists of a plurality of hydrophilic sheets, so as to obtain a separation assembly;
wherein, the surface of the isolation sheet is provided with holes, and the aperture ratio is less than 10%;
Wherein, in the hydrophilic sheet, the surface grafting rate of the hydrophilic side group on the hydrophilic sheet is 10-50wt%;
wherein the polypropylene sheet is a foamed polypropylene sheet; the average pore diameter of the surface of the foaming polypropylene sheet is 10-100 mu m; bending strength is 0.1-1MPa; the thickness is 0.1-1cm.
11. The method of claim 10, wherein in step (1), the weight ratio of the polypropylene sheet and etchant is 0.1 to 100:100;
and/or, the contact mode is soaking;
and/or, the contacting conditions include: the temperature is 20-60 ℃ and the time is 5-15h.
12. The method of claim 11, wherein the weight ratio of polypropylene sheet to etchant is 0.5-50:100.
13. the method of claim 11, wherein the polypropylene sheet and etchant are present in a weight ratio of 1-30:100.
14. the method of claim 10, wherein in step (2), the weight ratio of the monomer to the modified polypropylene sheet is from 10 to 50:100;
and/or the monomer is selected from at least one of an organic acid, an organic acid derivative, and a vinyl silane;
and/or, the conditions of microwave irradiation include: the irradiation power is 1500-15000W; the irradiation time is 1-30s;
And/or the frequency of microwave irradiation is more than or equal to 1 time;
and/or, in the step (3), the composition mode comprises: and splicing the plurality of hydrophilic sheets to obtain the separation sheet.
15. The method of claim 14, wherein the weight ratio of monomer to modified polypropylene sheet is from 10 to 30:100;
and/or the number of times of microwave irradiation is 1-5 times.
16. The method according to any one of claims 10-15, wherein the method further comprises: washing and secondary drying the microwave irradiated product before the assembly;
and/or, the method further comprises: when the monomer is an organic acid, anhydride and/or ester of the organic acid, salifying the second dried product with a base, and cleaning and third drying the salified product.
17. Use of an insulation assembly according to any one of claims 1 to 9 or an insulation assembly obtainable by a method according to any one of claims 10 to 16 for waterproofing and stain proofing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111094902.2A CN115819833B (en) | 2021-09-17 | 2021-09-17 | Isolation assembly and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111094902.2A CN115819833B (en) | 2021-09-17 | 2021-09-17 | Isolation assembly and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115819833A CN115819833A (en) | 2023-03-21 |
| CN115819833B true CN115819833B (en) | 2024-03-26 |
Family
ID=85515317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111094902.2A Active CN115819833B (en) | 2021-09-17 | 2021-09-17 | Isolation assembly and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115819833B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004129986A (en) * | 2002-10-15 | 2004-04-30 | Matsushita Electric Ind Co Ltd | Method for forming hydrophilic film, and steam generating apparatus using the same |
| KR20140133327A (en) * | 2013-05-10 | 2014-11-19 | 단국대학교 산학협력단 | Method for fabricating superhydrophobic surface of polymeric material |
| CN112442233A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Polypropylene film and preparation method and application thereof |
-
2021
- 2021-09-17 CN CN202111094902.2A patent/CN115819833B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004129986A (en) * | 2002-10-15 | 2004-04-30 | Matsushita Electric Ind Co Ltd | Method for forming hydrophilic film, and steam generating apparatus using the same |
| KR20140133327A (en) * | 2013-05-10 | 2014-11-19 | 단국대학교 산학협력단 | Method for fabricating superhydrophobic surface of polymeric material |
| CN112442233A (en) * | 2019-09-04 | 2021-03-05 | 中国石油化工股份有限公司 | Polypropylene film and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| "选择性加热固相接枝法及其在聚丙烯功能化方面的应用";王崧合;中国博士学位论文全文数据库工程科技I辑;第B016-216页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115819833A (en) | 2023-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103446898B (en) | Alginate-base organic-inorganic composite hydrogel filtering membrane and preparation method thereof | |
| CN103446899A (en) | Organic and inorganic surface chemically-crosslinked alginate-based hybrid hydrogel filter membrane, and preparation method thereof | |
| CN101704957B (en) | Method for preparing polymer film with continuous nanometer pore channels | |
| CN103170250A (en) | Hybridization hydrogel flat membrane for water filtration and preparation method thereof | |
| JP2011094155A (en) | Electrolyte membrane and solid polymer type fuel cell using the same | |
| CN112442233B (en) | Polypropylene film and preparation method and application thereof | |
| CN115819833B (en) | Isolation assembly and preparation method and application thereof | |
| CN110606980A (en) | Preparation method of super-hydrophobic LDH/melamine sponge | |
| CN113019137B (en) | Preparation and application of MXene @ COF composite film | |
| CN108630866B (en) | Hydrophilic perfluoro battery diaphragm and preparation method thereof | |
| Liu et al. | Advanced proton exchange membrane prepared from N-heterocyclic poly (aryl ether ketone) s with pendant benzenesulfonic moieties and performing enhanced radical tolerance and fuel cell properties | |
| CN112295418A (en) | Polyethylene-based composite graphene oxide nanofiltration membrane and preparation method thereof | |
| CN105789534B (en) | The preparation method of sulfonated polystyrene/MIcroporous polyolefin film crosslinked composite membrane | |
| CN111318181B (en) | Durable underwater super-oleophobic composite membrane and preparation method and application thereof | |
| CN102489265A (en) | Vegetable sponge used for adsorbing oil pollutants and modified products thereof | |
| CN115819834B (en) | Water collecting assembly, preparation method thereof and water collecting device | |
| CN115895013B (en) | Hydrophilic surface, preparation method and application thereof | |
| CN113600026B (en) | Preparation method of anti-pollution cross-linking type anion exchange membrane based on polyvinyl alcohol | |
| CN111496964B (en) | Moisture absorption power generation material based on ink and corn straw and preparation method thereof | |
| Jiao et al. | Surface Chemistry Enhancements of Activated Carbons Enabled Tunable Efficiency and Capacity of Organics Adsorption | |
| CN109867270B (en) | Preparation method and application of nano carbon material spherical assembly | |
| CN109638208B (en) | Preparation method of organic nano composite diaphragm | |
| Liu et al. | TpPa‐1 COFs‐Enhanced Zwitterion Hydrogel for Efficient Harvesting of Atmospheric Water | |
| CN115286060A (en) | MXene @ bamboo fiber assembly and preparation method and application thereof | |
| CN115727709A (en) | Water collector, preparation method thereof and cooling tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |