CN113105692A - Electret master batch and preparation method and application thereof - Google Patents
Electret master batch and preparation method and application thereof Download PDFInfo
- Publication number
- CN113105692A CN113105692A CN202110390525.0A CN202110390525A CN113105692A CN 113105692 A CN113105692 A CN 113105692A CN 202110390525 A CN202110390525 A CN 202110390525A CN 113105692 A CN113105692 A CN 113105692A
- Authority
- CN
- China
- Prior art keywords
- electret
- master batch
- agent
- polypropylene
- electret master
- 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.)
- Pending
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- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- -1 polypropylene Polymers 0.000 claims abstract description 73
- 239000004743 Polypropylene Substances 0.000 claims abstract description 45
- 229920001155 polypropylene Polymers 0.000 claims abstract description 45
- 239000003242 anti bacterial agent Substances 0.000 claims abstract description 44
- 239000011347 resin Substances 0.000 claims abstract description 30
- 229920005989 resin Polymers 0.000 claims abstract description 30
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 33
- 239000004744 fabric Substances 0.000 claims description 27
- 239000007822 coupling agent Substances 0.000 claims description 25
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 23
- 239000003963 antioxidant agent Substances 0.000 claims description 20
- 230000003078 antioxidant effect Effects 0.000 claims description 20
- 239000002667 nucleating agent Substances 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 239000002270 dispersing agent Substances 0.000 claims description 19
- 239000004611 light stabiliser Substances 0.000 claims description 16
- 229920001577 copolymer Polymers 0.000 claims description 15
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 12
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 10
- 125000005210 alkyl ammonium group Chemical group 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 8
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 7
- 229910002113 barium titanate Inorganic materials 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 6
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 6
- 235000013539 calcium stearate Nutrition 0.000 claims description 6
- 239000008116 calcium stearate Substances 0.000 claims description 6
- 229920001911 maleic anhydride grafted polypropylene Polymers 0.000 claims description 6
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 5
- 150000003973 alkyl amines Chemical class 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 239000004811 fluoropolymer Substances 0.000 claims description 5
- 229920002313 fluoropolymer Polymers 0.000 claims description 5
- 235000019359 magnesium stearate Nutrition 0.000 claims description 5
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 claims description 5
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 229940070527 tourmaline Drugs 0.000 claims description 5
- 229910052613 tourmaline Inorganic materials 0.000 claims description 5
- 239000011032 tourmaline Substances 0.000 claims description 5
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 4
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 4
- BGHBLQKNCVRIKV-UHFFFAOYSA-N OP(O)OP(O)O.OCC(CO)(CO)CO.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O Chemical compound OP(O)OP(O)O.OCC(CO)(CO)CO.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O.C(C)(C)(C)C1=C(C=CC(=C1)C(C)(C)C)O BGHBLQKNCVRIKV-UHFFFAOYSA-N 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 4
- 150000005215 alkyl ethers Chemical class 0.000 claims description 4
- 229960000686 benzalkonium chloride Drugs 0.000 claims description 4
- UREZNYTWGJKWBI-UHFFFAOYSA-M benzethonium chloride Chemical compound [Cl-].C1=CC(C(C)(C)CC(C)(C)C)=CC=C1OCCOCC[N+](C)(C)CC1=CC=CC=C1 UREZNYTWGJKWBI-UHFFFAOYSA-M 0.000 claims description 4
- 229960001950 benzethonium chloride Drugs 0.000 claims description 4
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical compound [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 claims description 4
- 229960003237 betaine Drugs 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 4
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 4
- 229940037312 stearamide Drugs 0.000 claims description 4
- HZVFRKSYUGFFEJ-YVECIDJPSA-N (2r,3r,4s,5r)-7-phenylhept-6-ene-1,2,3,4,5,6-hexol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=CC1=CC=CC=C1 HZVFRKSYUGFFEJ-YVECIDJPSA-N 0.000 claims description 3
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- IQDGSYLLQPDQDV-UHFFFAOYSA-N dimethylazanium;chloride Chemical compound Cl.CNC IQDGSYLLQPDQDV-UHFFFAOYSA-N 0.000 claims description 3
- 229930182470 glycoside Natural products 0.000 claims description 3
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical compound [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 claims description 3
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 2
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 229940077388 benzenesulfonate Drugs 0.000 claims description 2
- DLFDEDJIVYYWTB-UHFFFAOYSA-N dodecyl(dimethyl)azanium;bromide Chemical compound Br.CCCCCCCCCCCCN(C)C DLFDEDJIVYYWTB-UHFFFAOYSA-N 0.000 claims description 2
- VHDPPDRSCMVFAV-UHFFFAOYSA-N n,n-dimethylhexadecan-1-amine;hydrobromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[NH+](C)C VHDPPDRSCMVFAV-UHFFFAOYSA-N 0.000 claims description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- ZHROMWXOTYBIMF-UHFFFAOYSA-M sodium;1,3,7,9-tetratert-butyl-11-oxido-5h-benzo[d][1,3,2]benzodioxaphosphocine 11-oxide Chemical compound [Na+].C1C2=CC(C(C)(C)C)=CC(C(C)(C)C)=C2OP([O-])(=O)OC2=C1C=C(C(C)(C)C)C=C2C(C)(C)C ZHROMWXOTYBIMF-UHFFFAOYSA-M 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 22
- 241000700605 Viruses Species 0.000 abstract description 14
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 13
- 230000002195 synergetic effect Effects 0.000 abstract description 5
- 230000000241 respiratory effect Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 26
- 230000000052 comparative effect Effects 0.000 description 19
- 241000894006 Bacteria Species 0.000 description 13
- 239000002245 particle Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 239000000443 aerosol Substances 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000002572 peristaltic effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004599 antimicrobial Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000005543 nano-size silicon particle Substances 0.000 description 2
- 210000002345 respiratory system Anatomy 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 241000219053 Rumex Species 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical group [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000003385 bacteriostatic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- LDCRTTXIJACKKU-ONEGZZNKSA-N dimethyl fumarate Chemical group COC(=O)\C=C\C(=O)OC LDCRTTXIJACKKU-ONEGZZNKSA-N 0.000 description 1
- 229960004419 dimethyl fumarate Drugs 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2400/00—Characterised by the use of unspecified polymers
- C08J2400/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C08J2400/102—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing halogen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/14—Copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K13/02—Organic and inorganic ingredients
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- C08K2201/011—Nanostructured additives
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- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
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- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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Abstract
The invention relates to an electret master batch and a preparation method and application thereof, wherein the electret master batch comprises the following raw materials in percentage by mass: 50-80% of polypropylene resin, 3-5% of antibacterial agent, 5-15% of electret and 0.05-36.5% of auxiliary agent. The electret master batch is added with the antibacterial agent, and the antibacterial agent and the electret in a specific ratio have a synergistic effect, so that the electret master batch has high filtering efficiency and low respiratory resistance and has an antibacterial effect. Especially, the air mixed with virus can be effectively filtered to block the virus from passing through.
Description
Technical Field
The invention relates to the technical field of melt-blown non-woven fabrics, in particular to an electret master batch and a preparation method and application thereof.
Background
In the fields of air purification and the like, a filter material is required to isolate particles, bacteria, viruses and the like from people, a melt-blown non-woven fabric is one of key materials, and electret master batches are key components of the melt-blown non-woven fabric.
CN111560140A discloses an organic electret master batch special for melt-blown non-woven fabric for a mask, a preparation method thereof and a melt-blown non-woven fabric prepared from the organic electret master batch, wherein the electret master batch comprises the following components in percentage by weight: 80-90% of polypropylene resin, 2-10% of fluorine electret powder, 1-10% of compatilizer and 0.05-0.5% of processing aid. The average particle size of the fluorine electret powder is 0.05-3 um, the compatilizer is maleic anhydride grafted olefin copolymer/elastomer or glycidyl methacrylate grafted olefin copolymer/elastomer, and the melt index of the polypropylene resin is not lower than 1000g/10 min. The disclosed organic electret master batch special for melt-blown non-woven fabrics overcomes the blocking phenomenon of the existing electret master batch easily caused by electret powder precipitation in the production process of melt-blown non-woven fabrics for masks, and fluorine electret powder can be well dispersed uniformly and still has good electret effect under the condition of smaller addition amount. However, the disclosed electret master batch has no bacteriostatic action and cannot prevent bacteria, viruses and the like from entering respiratory tracts of human bodies.
CN111662505A discloses an antibacterial non-woven material and a preparation method thereof, wherein the disclosed antibacterial non-woven material comprises 80-120 parts of polypropylene, 1-3 parts of antibacterial agent, 3-10 parts of electret master batch and the like, and the antibacterial agent is a silver ion antibacterial agent or a zinc ion antibacterial agent; the preparation method comprises the following steps: mixing, melt extrusion, mixing homogenization and melt-blown molding. The antibacterial non-woven material product disclosed by the method can be used for preparing medical consumables such as masks and operation caps. However, the electret master batch disclosed by the method is lack of air filtering effect on mixed virus, and still cannot effectively filter and block virus from passing through, so that air is sterilized and enters human respiratory tracts to infect virus.
In view of the above, it is important to develop an electret master batch for preparing a melt-blown nonwoven fabric capable of effectively filtering viruses and bacteria.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide the electret master batch and the preparation method and application thereof, wherein the electret master batch has the effects of oil absorption, antibiosis and virus resistance.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an electret master batch, which comprises the following raw materials in percentage by mass: 50-80% of polypropylene resin, 3-5% of antibacterial agent, 5-15% of electret and 0.05-36.5% of auxiliary agent;
wherein 50-80% may be 55%, 60%, 65%, 70%, 75%, etc.
The 3% to 5% may be specifically 3.2%, 3.5%, 3.8%, 4.0%, 4.2%, 4.5%, 4.8%, etc.
The 5% to 15% may be specifically 6%, 7%, 8%, 9%, 10%, 11%, 12%, 13%, 14%, or the like.
The content of 0.05% to 36.5% may be specifically 0.1%, 0.5%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, or the like.
The electret master batch is added with the antibacterial agent, and the antibacterial agent and the electret in a specific ratio have a synergistic effect, so that the electret master batch has high filtering efficiency and low respiratory resistance and has an antibacterial effect. Especially, the air mixed with virus can be effectively filtered to block the virus from passing through.
In the invention, if the addition amount of the antibacterial agent is too low, the antibacterial agent cannot be sufficiently antibacterial, and if the addition amount of the antibacterial agent is too high, the antibacterial agent cannot well generate a synergistic effect with the electret, so that the filtration efficiency of the electret master batch is reduced. Similarly, if the addition amount of the electret is too low, the electret effect of the product is poor, and the electret time is short.
Preferably, the polypropylene resin includes homo-polypropylene and/or co-polypropylene.
Preferably, the copolymerized polypropylene includes an ethylene-propylene copolymer and/or a propylene-butene copolymer.
Preferably, the polypropylene resin has a melt index of more than 1500g/10min, such as 1600g/10min, 1700g/10min, 1800g/10min, 1900g/10min, 2000g/10min, 2100g/10min, etc., preferably 1700-1900g/10min at 230 ℃/2.16 kg.
Preferably, the antimicrobial agent comprises any one of or a combination of at least two of sodium linear alkyl benzene sulfonate, alkyl glycoside, alkyl amine oxide, benzalkonium chloride, benzethonium chloride, alkyl ammonium bromide, polyoxyethylene alkyl ether, betaine, or quaternary ammonium salt organics, wherein typical but non-limiting combinations include: a combination of sodium linear alkylbenzene sulfonate and alkyl glycoside, a combination of alkylamine oxide, benzalkonium chloride and benzethonium chloride, a combination of alkylammonium chloride, alkylammonium bromide, polyoxyethylene alkyl ether and quaternary ammonium salt organic matter, a combination of any one or at least two of alkylglycoside, alkylamine oxide, benzalkonium chloride, benzethonium chloride, alkylammonium bromide, polyoxyethylene alkyl ether, quaternary ammonium salt organic matter and betaine, and the like.
Preferably, the alkyl ammonium chloride comprises dialkyl dimethyl ammonium chloride.
Preferably, the alkyl ammonium bromide comprises cetyl dimethyl ammonium bromide and/or dodecyl dimethyl ammonium bromide.
The antibacterial agent is selected because the antibacterial agent can effectively filter viruses and bacteria, and can also play a role of a surfactant and an oil absorbent, so that the electret master batch has good affinity with oil, good oil absorption and a large adsorption range, and the filtering efficiency of the electret master batch is further improved.
Preferably, the electret comprises any one or a combination of at least two of nano tourmaline powder, nano barium titanate, nano silica or fluoropolymer, wherein typical but non-limiting combinations include: a combination of nano tourmaline powder and nano barium titanate, a combination of nano barium titanate, nano silicon dioxide and fluoropolymer, a combination of nano tourmaline powder, nano barium titanate, nano silicon dioxide and fluoropolymer, and the like, and the combination of nano barium titanate and fluoropolymer is preferred.
The electret is an important component of the melt-blown non-woven fabric for the mask, the melt-blown fabric has an electricity storage function by adding the electret, and the filtering effect of the melt-blown non-woven fabric for the mask reaches an ideal degree.
Preferably, the auxiliary agent comprises any one or a combination of at least two of a dispersant, a nucleating agent, a coupling agent, a compatibilizer, an antioxidant or a light stabilizer, wherein a typical but non-limiting combination comprises: a combination of a dispersant and a nucleating agent, a combination of a nucleating agent, a coupling agent and a compatilizer, a combination of a dispersant, a nucleating agent, a coupling agent, a compatilizer and an antioxidant, a combination of a dispersant, a nucleating agent, a coupling agent, a compatilizer, an antioxidant or a light stabilizer, and the like.
Preferably, the dispersant comprises a fatty acid salt and/or a stearamide.
Fatty acid salts and stearamides enable better dispersion of the electret.
Preferably, the fatty acid salt comprises any one or a combination of at least two of calcium stearate, zinc stearate, magnesium stearate or lithium stearate, wherein typical but non-limiting combinations include: combinations of calcium stearate and zinc stearate, combinations of calcium stearate, zinc stearate, and magnesium stearate, combinations of calcium stearate, zinc stearate, magnesium stearate, and lithium stearate, and the like.
Preferably, the stearamide comprises N, N' -ethylene bis stearamide.
Preferably, the nucleating agent comprises a phosphate ester and/or benzalsorbitol.
Preferably, the phosphate ester comprises sodium 2,2' -methylenebis (4, 6-di-tert-butylphenyl) phosphate.
Preferably, the coupling agent comprises a titanate coupling agent and/or a silane coupling agent.
The coupling agent is added to ensure that the surface of the electret is changed from hydrophilicity to lipophilicity through chemical reaction or physical coating of the coupling agent and the electret, so that the coupling agent and the polypropylene are tightly combined, and the strength, the cohesive force, the electrical property, the hydrophobicity, the ageing resistance and the like of the material are further obviously improved.
Preferably, the compatibilizer comprises any one or a combination of at least two of maleic anhydride grafted polypropylene, maleic anhydride grafted polyethylene, maleic anhydride grafted ethylene-octene copolymer, glycidyl methacrylate grafted polypropylene, glycidyl methacrylate grafted ethylene-octene copolymer, or glycidyl methacrylate grafted ethylene propylene diene monomer rubber, wherein typical but non-limiting combinations include: a combination of maleic anhydride grafted polypropylene and maleic anhydride grafted polyethylene, a combination of maleic anhydride grafted ethylene-octene copolymer, glycidyl methacrylate grafted polypropylene and glycidyl methacrylate grafted ethylene-octene copolymer, a combination of maleic anhydride grafted polyethylene, maleic anhydride grafted ethylene-octene copolymer, glycidyl methacrylate grafted polypropylene and glycidyl methacrylate grafted ethylene-octene copolymer, maleic anhydride grafted polypropylene, maleic anhydride grafted polyethylene, maleic anhydride grafted ethylene-octene copolymer, glycidyl methacrylate grafted polypropylene, glycidyl methacrylate grafted ethylene-octene copolymer, and glycidyl methacrylate grafted ethylene propylene diene monomer rubber combinations and the like.
In order to make the electret more compatible with the polypropylene resin, a low molecular weight compatibilizer is generally added, and the molecular weight of the conventional compatibilizer on the market is high, so that the preparation of the compatibilizer is required. The compatibilizer of the present invention is prepared by the following exemplary steps:
adding polypropylene with a melt index of more than 1500g/10min into a solid phase reactor, then adding maleic anhydride and dibenzoyl peroxide in proportion, reacting for about 60 minutes at a certain temperature, and then vacuumizing to obtain the maleic anhydride grafted polypropylene with low molecular weight.
Preferably, the antioxidant comprises any one of tris (2, 4-di-tert-butylphenyl) phosphite (antioxidant 168), tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester (antioxidant 1010) or bis (2, 4-di-tert-butylphenol) pentaerythritol diphosphite (antioxidant 626), or a combination of at least two thereof, wherein a typical but non-limiting combination comprises: a combination of tris (2, 4-di-t-butylphenyl) phosphite and tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester, a combination of tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester and bis (2, 4-di-t-butylphenol) pentaerythritol diphosphite, a combination of tris (2, 4-di-t-butylphenyl) phosphite, tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester and bis (2, 4-di-t-butylphenol) pentaerythritol diphosphite, and the like.
The addition of an antioxidant can avoid uncontrolled degradation of the polypropylene during the extrusion process.
Preferably, the light stabilizer includes hindered amine light stabilizers such as UV-531, UV-944 and the like.
Preferably, the mass percentage of the dispersing agent in the raw material for preparing the electret master batch is 10-20%, such as 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19% and the like.
Preferably, the mass percentage of the nucleating agent in the raw material for preparing the electret master batch is 3% -10%, such as 4%, 5%, 6%, 7%, 8%, 9% and the like.
Preferably, the mass percentage of the coupling agent in the raw material for preparing the electret master batch is 0.2-1.0%, such as 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, etc.
Preferably, the mass percentage of the compatilizer in the raw material for preparing the electret master batch is 1.0-5.0%, such as 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5% and the like.
Preferably, the mass percentage of the antioxidant in the electret master batch preparation raw material is 0.05% -0.5%, such as 0.1%, 0.15%, 0.2%, 0.25%, 0.3%, 0.35%, 0.4%, 0.45% and the like.
Preferably, the mass percentage of the light stabilizer in the raw material for preparing the electret masterbatch is 0.5% -1.5%, such as 0.6%, 0.7%, 0.8%, 0.9%, 1%, 1.1%, 1.2%, 1.3%, 1.4%, etc.
In a second aspect, the present invention provides a method for preparing the electret masterbatch of the first aspect, wherein the method comprises the following steps: mixing 50-80% of polypropylene resin, 3-5% of antibacterial agent, 5-15% of electret and 0.05-36.5% of auxiliary agent in percentage by mass, melting, extruding and granulating to obtain the electret master batch.
Preferably, the preparation method specifically comprises the following steps:
(1) heating the mixer for the first time, adding the electret, the coupling agent and the dispersing agent, and stirring for the first time;
(2) adding the polypropylene resin, the antibacterial agent, the nucleating agent, the compatilizer, the antioxidant and the light stabilizer into the mixer, and stirring for the second time;
(3) discharging the material obtained in the step (2) into a hopper of a double-screw extruder, starting the double-screw extruder, melting and mixing the material in a machine barrel, extruding the material, sequentially passing through a screen changer, a water chute, a water tank, an air knife and a granulator, granulating the material, and then sending the material into a homogenizing bin for homogenizing and drying to obtain the electret master batch.
Preferably, the temperature of said first temperature increase in step (1) is 90-120 ℃, such as 95 ℃, 100 ℃, 105 ℃, 110 ℃, 115 ℃ and the like, preferably 105 ℃.
Preferably, the first stirring rate in step (1) is 10-25rpm, such as 12rpm, 14rpm, 16rpm, 18rpm, 20rpm, 22rpm, 24rpm, etc.
Preferably, the first stirring in step (1) is carried out for a period of time ranging from 5 to 25 minutes, such as 10 minutes, 15 minutes, 20 minutes, etc.
Preferably, the second stirring in step (2) is carried out for a period of time ranging from 1 to 8 minutes, such as 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 7 minutes, etc.
Preferably, the aperture of the filter screen of the screen changer in the step (3) is more than 200 meshes, such as 250 meshes, 300 meshes, 350 meshes, and the like.
Preferably, the screw length-diameter ratio of the twin-screw extruder in step (3) is not less than 40:1, such as 42:1, 44:1, 46:1, 48:1, 50:1, etc., preferably 40:1 to 48: 1.
As a preferred technical scheme, the preparation method comprises the following steps:
(1) heating the mixer to 90-120 ℃ for the first time, adding the electret, the coupling agent and the dispersing agent, and stirring for the first time for 5-25 minutes at the speed of 10-25 rpm;
(2) adding the polypropylene resin, the antibacterial agent, the nucleating agent, the compatilizer, the antioxidant and the light stabilizer into the mixer, and stirring for 1-8 minutes for the second time;
(3) discharging the material obtained in the step (2) into a hopper of a double-screw extruder, starting the double-screw extruder with the length-diameter ratio of a screw rod of 40:1-48:1, melting and mixing the materials in a machine barrel, extruding the materials, sequentially passing through a screen changer with a filter screen of more than 200 meshes, a water chute, a water tank, an air knife and a granulator, granulating the materials, and conveying the granules into a homogenizing bin by air for homogenizing and drying to obtain the electret master batch.
In a third aspect, the present invention provides a melt-blown nonwoven fabric, which includes the electret masterbatch of the first aspect.
In a fourth aspect, the present invention provides a mask comprising the meltblown nonwoven fabric of the third aspect.
Compared with the prior art, the invention has the following beneficial effects:
the electret master batch is added with the antibacterial agent, and the antibacterial agent and the electret in a specific ratio have a synergistic effect, so that the electret master batch has high filtering efficiency and low respiratory resistance and has an antibacterial effect. Especially, the air mixed with virus can be effectively filtered to block the virus from passing through. The air flow resistance of the melt-blown fabric prepared by the electret master batch is within 106Pa, the filtering efficiency of 0.3 mu m particles is more than 94.5 percent, the filtering efficiency of 0.5 mu m particles is more than 96.5 percent, the filtering efficiency of 2.5 mu m particles can reach 100 percent, the filtering efficiency of bacteria is more than 90 percent, and the comprehensive performance is excellent.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
The embodiment provides an electret master batch, which comprises the following raw materials in percentage by mass: 60% of polypropylene resin (the number average molecular weight is 18000g/mol), 4% of antibacterial agent (cetyl trimethyl ammonium bromide), 10% of electret (nano barium titanate), 15% of dispersing agent (magnesium stearate), 6% of nucleating agent (benzalsorbitol), 0.6% of coupling agent (titanate coupling agent, purchased from green chemical industry, brand TMC980), 3% of compatilizer (maleic anhydride grafted polypropylene, the number average molecular weight is 23000g/mol), 0.25% of antioxidant (purchased from linalon, brand antioxidant 168), and 1.15% of light stabilizer (purchased from linaloon, brand UV 944).
The preparation method of the electret master batch comprises the following steps:
(1) heating the mixer to 105 ℃ for the first time, adding the electret, the coupling agent and the dispersing agent, and stirring for the first time for 15 minutes at the speed of 20 rpm;
(2) adding the polypropylene resin, the antibacterial agent, the nucleating agent, the compatilizer and the antioxidant into the mixer, and stirring for 5 minutes for the second time;
(3) discharging the material obtained in the step (2) into a hopper of a double-screw extruder, starting the double-screw extruder with the screw length-diameter ratio of 45:1, melting and mixing in a machine barrel, extruding, sequentially passing through a screen changer with a 250-mesh filter screen, a water chute, a water tank, an air knife and a granulator, granulating, and conveying air into a homogenizing bin for homogenizing and drying to obtain the electret master batch.
The embodiment also provides a melt-blown non-woven fabric, which comprises the electret master batch.
The preparation method of the melt-blown non-woven fabric comprises the following steps:
the production process of melt-blown non-woven fabric is characterized by that the polypropylene special-purpose material with high melt index (MFI) and electret mother granules are uniformly mixed in a mixing machine, then added into the buffer material of melt-blown non-woven fabric machine, and fed into the machine barrel, and then the above-mentioned material is extruded, heated and melted in the machine barrel to obtain high-temp. melt with good flowability, then the above-mentioned high-temp. melt is jetted from the spinneret plate connected behind the machine barrel by means of melt trickle, then the high-temp. high-speed hot air flow is used to blow-blow the above-mentioned fine fibre, and then the above-mentioned fine fibre is formed into fibre web on the receiving device (for example, web-forming machine), and the. And carrying out wire loading and charge holding before rolling or carrying out offline charge holding after rolling.
Example 2
The embodiment provides an electret master batch, which comprises the following raw materials in percentage by mass: 50% of polypropylene resin (with the number average molecular weight of 18000g/mol), 5% of antibacterial agent (dialkyl dimethyl ammonium chloride and alkylamine oxide (such as octadecyl dihydroxyethyl amine oxide) with the mass ratio of 1: 1), 15% of electret (nano tourmaline powder), 13% of dispersing agent (zinc stearate and N, N' -ethylene bis stearamide with the mass ratio of 1: 1), 10% of nucleating agent (benzal sorbitol), 1.0% of coupling agent (silane coupling agent purchased from green chemical industry and having the brand of TMC980), 5.0% of compatilizer (glycidyl methacrylate grafted polypropylene with the number average molecular weight of 10000g/mol), 0.5% of antioxidant (purchased from linaloon and having the brand of antioxidant 1010), and 0.5% of light stabilizer (purchased from linaloon and having the brand of UV 944).
The preparation method of the electret master batch comprises the following steps:
(1) heating the mixer to 90 ℃ for the first time, adding the electret, the coupling agent and the dispersing agent, and stirring for the first time for 25 minutes at the speed of 10 rpm;
(2) adding the polypropylene resin, the antibacterial agent, the nucleating agent, the compatilizer and the antioxidant into the mixer, and stirring for 1 minute for the second time;
(3) discharging the material obtained in the step (2) into a hopper of a double-screw extruder, starting the double-screw extruder with the length-diameter ratio of a screw rod of 40:1, melting and mixing the materials in a machine barrel, extruding the materials, sequentially passing through a screen changer with a 300-mesh filter screen, a water chute, a water tank, an air knife and a granulator, granulating the materials, and conveying the granules into a homogenizing bin by air for homogenizing and drying to obtain the electret master batch.
The embodiment also provides a melt-blown non-woven fabric, which comprises the electret master batch.
The method of preparing the melt-blown nonwoven fabric was the same as in example 1.
Example 3
The embodiment provides an electret master batch, which comprises the following raw materials in percentage by mass: 76.25% of polypropylene resin (with the number average molecular weight of 18000g/mol), 3% of an antibacterial agent (betaine), 5% of an electret (a fluorine-containing polymer with the number average molecular weight of 10000g/mol and purchased from Rumex under the brand of LANPOY 1001), 10% of a dispersing agent (calcium stearate), 3% of a nucleating agent (phosphate ester), 0.2% of a coupling agent (a silane coupling agent purchased from Green chemical industry under the brand of TMC-980), 1.0% of a compatilizer (a maleic anhydride grafted ethylene-octene copolymer with the number average molecular weight of 10000g/mol), 0.15% of an antioxidant (purchased from linaloon under the brand of 626), and 1.5% of a light stabilizer (purchased from linaloon under the brand of UV 944).
The preparation method of the electret master batch comprises the following steps:
(1) heating the mixer to 120 ℃ for the first time, adding the electret, the coupling agent and the dispersing agent, and stirring for the first time for 5 minutes at the speed of 25 rpm;
(2) adding the polypropylene resin, the antibacterial agent, the nucleating agent, the compatilizer and the antioxidant into the mixer, and stirring for 8 minutes for the second time;
(3) discharging the material obtained in the step (2) into a hopper of a double-screw extruder, starting the double-screw extruder with the screw length-diameter ratio of 48:1, melting and mixing in a machine barrel, extruding, sequentially passing through a screen changer with a filter screen of more than 200 meshes, a water chute, a water tank, an air knife and a granulator, granulating, and conveying air into a homogenizing bin for homogenizing and drying to obtain the electret master batch.
The embodiment also provides a melt-blown non-woven fabric, which comprises the electret master batch.
The method of preparing the melt-blown nonwoven fabric was the same as in example 1.
Example 4
This example differs from example 1 in that the antibacterial agent in example 1 was replaced with dimethyl fumarate of equal mass.
Examples 5 to 6
Examples 5 to 6 are different from example 1 in the addition amount of the antibacterial agent, wherein the mass percentage of the antibacterial agent in example 5 is 3% and the mass percentage of the polypropylene resin is adjusted to 61%; in example 6, the mass percent of the antibacterial agent was 5%, and the mass percent of the polypropylene resin was adjusted to 59%.
Examples 7 to 8
Examples 7 to 8 are different from example 1 in the addition amount of the electret, wherein the mass percentage of the electret in example 7 is 5% and the mass percentage of the polypropylene resin is adjusted to 65%; in example 8, the mass percentage of the electret was 15%, and the mass percentage of the polypropylene resin was adjusted to 55%.
Comparative examples 1 to 2
Comparative examples 1 to 2 are different from example 1 in the addition amount of the antibacterial agent, wherein the mass percentage of the antibacterial agent in comparative example 1 is 1%, and the mass percentage of the polypropylene resin is adjusted to 63%; the mass percentage of the antibacterial agent in comparative example 2 was 7%, and the mass percentage of the polypropylene resin was adjusted to 57%.
Comparative examples 3 to 4
Comparative examples 3 to 4 are different from example 1 in the addition amount of the electret, the mass percentage of the electret in comparative example 3 is 2%, and the mass percentage of the polypropylene resin is adjusted to 68%; in comparative example 4, the mass percentage of the electret was 17%, and the mass percentage of the polypropylene resin was adjusted to 53%.
Comparative example 5
Comparative example 5 differs from example 1 in that no electret was added and the mass percent of the antimicrobial agent was 14%.
Comparative example 6
Comparative example 6 differs from example 1 in that no antibacterial agent was added and the mass percentage of the electret was 14%.
And (3) performance testing:
inventive examples 1-8 and comparative examples 1-6 were tested as follows:
(1) airflow resistance: testing according to the national standard GB 2626;
(2) the filtration efficiency; the filtration efficiency test is carried out according to the national standard GB19083, and the particle size is detected as follows: 0.3, 0.5, 2.5, 5.0 μm.
The test operation steps are as follows:
1) taking out the sample from the pretreatment chamber, placing the sample on a stainless steel mesh in a lower cavity, selecting a test mode, and pressing the sample by dropping the upper cavity after clicking a [ sample clamping ] button; if the mask has folds, the folds are unfolded and then are fixed on a sample fixing device to ensure that the target area is a single-layer material; taking the center of the sample as a test area;
2) setting test parameters in a test interface, clicking (test) and starting the test; in the mass concentration test mode, the weight of a sample before and after a test is input into a test result interface, and a system automatically calculates the mass concentration value; and in other test modes, the system automatically displays the test result after the test is finished.
(3) The filtration efficiency test of the melt-blown BFE bacteria is carried out according to the GB/T32610 standard. The operation steps are as follows: adding bacteria liquid into a test tube, preparing a mask to be tested, preparing 12 culture dishes with the diameter of 60 multiplied by 15, placing the test tube filled with the bacteria liquid on a test tube rack, inserting a pipette on the left side of a peristaltic pump into the bottom of the test tube, respectively loading the 12 culture dishes (without covers) pasted with labels into an Anderson generator on the left side, and closing a sealing bin gate. The fan switch on the panel of the host computer is pressed and stopped after two minutes. Clicking the peristaltic pump to start for two minutes and then stopping, or visually observing the peristaltic pump to send the liquid in the bacteria liquid test tube into a liquid spraying chamber of the aerosol generator. The aerosol was clicked for two minutes and stopped to allow the aerosol chamber to fill with bacteria. Stopping after the click filtration efficiency begins to test for two minutes (note: before the test, the flow of the AB path vacuum loop is adjusted to be 28.3 liters, and the fluctuation value is about 1 liter); after the test is finished, the bin door is not opened, the fan is clicked to open and close for two minutes, and the overflowing bacterium aerosol in the bin is pumped away. Opening the bin door, pulling out the quick connectors of the Anderson generators on the two sides, taking out culture dishes at all levels in the bin, covering the culture dishes with a cover, and taking the whole Anderson generator into a sterile culture box to disassemble and take out the culture dishes; and (3) placing each culture dish on a colony counter, checking the colony number of the culture dish, recording, and calculating the bacterial filtration efficiency value according to a bacteria number comparison table in a yy0469 standard appendix table.
The test results are summarized in table 1.
TABLE 1
As can be seen from the data in Table 1: the airflow resistance of the meltblown fabric prepared from the electret master batch is within 106Pa, the filtering efficiency of 0.3-micron particles is more than 94.5%, the filtering efficiency of 0.5-micron particles is more than 96.5%, the filtering efficiency of 2.5-micron particles can reach 100%, and the filtering efficiency of bacteria is more than 90%.
Analysis of example 4 and example 1 revealed that example 4 had a lower antibacterial effect than example 1, and that the antibacterial effect of the electret base particles obtained from the antibacterial agent having the functions of a surfactant and an oil absorbent was better.
By analyzing examples 5-6 and comparative examples 1-2, it can be found that comparative examples 1-2 are inferior in antibacterial effect to examples 1 and 5-6, and the effect of the obtained electret mother particle is better when the mass percentage of the antibacterial agent is in the range of 3% -5%.
Analysis of examples 7-8 and comparative examples 3-4 shows that comparative examples 3-4 have less antibacterial effect than examples 1 and 7-8, and prove that the electret masterbatch obtained in the mass percent of electret in the range of 5% -15% has better effect.
Analysis of comparative examples 5 to 6 and example 1 revealed that comparative examples 5 to 6 were inferior in antibacterial effect to example 1, and that the antibacterial agent and the electret agent demonstrated synergistic effects, and that the antibacterial agent did not easily meet the use requirements without the electret agent.
In summary, the following steps: the melt-blown fabric prepared from the electret master batch has high filtering efficiency, low respiratory resistance and excellent antibacterial effect.
The present invention is illustrated in detail by the examples described above, but the present invention is not limited to the details described above, i.e., it is not intended that the present invention be implemented by relying on the details described above. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The electret master batch is characterized in that the preparation raw materials of the electret master batch comprise the following components in percentage by mass: 50-80% of polypropylene resin, 3-5% of antibacterial agent, 5-15% of electret and 0.05-36.5% of auxiliary agent.
2. The electret masterbatch of claim 1, wherein the polypropylene resin comprises homo-polypropylene and/or co-polypropylene;
preferably, the copolymerized polypropylene includes an ethylene-propylene copolymer and/or a propylene-butene copolymer;
preferably, the polypropylene resin has a melt index higher than 1500g/10min at 230 ℃/2.16 kg;
preferably, the antibacterial agent comprises any one or a combination of at least two of linear alkyl benzene sulfonate, alkyl glycoside, alkylamine oxide, benzalkonium chloride, benzethonium chloride, alkyl ammonium bromide, polyoxyethylene alkyl ether, betaine or quaternary ammonium salt organic matter;
preferably, the alkyl ammonium chloride comprises dialkyl dimethyl ammonium chloride;
preferably, the alkyl ammonium bromide comprises cetyl dimethyl ammonium bromide and/or dodecyl dimethyl ammonium bromide.
3. The electret masterbatch according to claim 1 or 2, wherein the electret comprises any one or a combination of at least two of nano tourmaline powder, nano barium titanate, nano silica or fluoropolymer.
4. The electret masterbatch according to any one of claims 1 to 3, wherein the auxiliary agent comprises any one or a combination of at least two of a dispersing agent, a nucleating agent, a coupling agent, a compatibilizer, an antioxidant or a light stabilizer;
preferably, the dispersant comprises a fatty acid salt and/or a stearamide;
preferably, the fatty acid salt comprises any one or a combination of at least two of calcium stearate, zinc stearate, magnesium stearate or lithium stearate;
preferably, the stearamide comprises N, N' -ethylene bis stearamide;
preferably, the nucleating agent comprises a phosphate ester and/or a benzalsorbitol;
preferably, the phosphate ester comprises sodium 2,2' -methylenebis (4, 6-di-tert-butylphenyl) phosphate;
preferably, the coupling agent comprises a titanate coupling agent and/or a silane coupling agent;
preferably, the compatilizer comprises any one or a combination of at least two of maleic anhydride grafted polypropylene, maleic anhydride grafted polyethylene, maleic anhydride grafted ethylene-octene copolymer, glycidyl methacrylate grafted polypropylene, glycidyl methacrylate grafted ethylene-octene copolymer or glycidyl methacrylate grafted ethylene propylene diene monomer rubber;
preferably, the antioxidant comprises any one of tris (2, 4-di-tert-butylphenyl) phosphite, tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester or bis (2, 4-di-tert-butylphenol) pentaerythritol diphosphite or a combination of at least two thereof;
preferably, the light stabilizer comprises a hindered amine light stabilizer.
5. The electret masterbatch according to claim 4, wherein the mass percentage of the dispersant in the electret masterbatch preparation raw material is 10% -20%;
preferably, the mass percentage of the nucleating agent in the electret master batch preparation raw material is 3% -10%;
preferably, the mass percentage of the coupling agent in the electret master batch preparation raw material is 0.2% -1.0%;
preferably, the mass percentage of the compatilizer in the electret master batch preparation raw material is 1.0% -5.0%;
preferably, the mass percentage of the antioxidant in the electret master batch preparation raw material is 0.05% -0.5%;
preferably, the mass percentage of the light stabilizer in the raw material for preparing the electret master batch is 0.5-1.5%.
6. The method for preparing the electret masterbatch according to any one of claims 1 to 5, comprising the steps of: mixing 50-80% of polypropylene resin, 3-5% of antibacterial agent, 5-15% of electret and 0.05-36.5% of auxiliary agent in percentage by mass, melting, extruding and granulating to obtain the electret master batch.
7. The preparation method according to claim 6, characterized in that the preparation method specifically comprises the steps of:
(1) heating the mixer for the first time, and adding the electret, the coupling agent and the dispersing agent for stirring for the first time;
(2) adding the polypropylene resin, the antibacterial agent, the nucleating agent, the compatilizer, the antioxidant and the light stabilizer into the mixer, and stirring for the second time;
(3) discharging the material obtained in the step (2) into a hopper of a double-screw extruder, starting the double-screw extruder, melting and mixing the material in a machine barrel, extruding the material, sequentially passing through a screen changer, a water chute, a water tank, an air knife and a granulator, and after granulation, sending the material to a homogenizing bin for homogenizing and drying to obtain the electret master batch;
preferably, the temperature of the first temperature rise in the step (1) is 90-120 ℃;
preferably, the first stirring speed of the step (1) is 10-25 rpm;
preferably, the time for the first stirring in the step (1) is 5 to 25 minutes;
preferably, the time for the second stirring in the step (2) is 1-8 minutes;
preferably, the aperture of the filter screen of the screen changer in the step (3) is more than 200 meshes;
preferably, the screw length-diameter ratio of the twin-screw extruder in the step (3) is not less than 40: 1.
8. The method according to claim 6 or 7, characterized in that it comprises the steps of:
(1) heating the mixer to 90-120 ℃ for the first time, adding the electret, the coupling agent and the dispersing agent, and stirring for the first time for 5-25 minutes at the speed of 10-25 rpm;
(2) adding the polypropylene resin, the antibacterial agent, the nucleating agent, the compatilizer, the antioxidant and the light stabilizer into the mixer, and stirring for 1-8 minutes for the second time;
(3) discharging the material obtained in the step (2) into a hopper of a double-screw extruder, starting the double-screw extruder with the length-diameter ratio of a screw rod of 40:1-56:1, melting and mixing the materials in a machine barrel, extruding the materials, sequentially passing through a screen changer with a filter screen of more than 200 meshes, a water chute, a water tank, an air knife and a granulator, granulating the materials, and conveying the granules into a homogenizing bin by air for homogenizing and drying to obtain the electret master batch.
9. A melt-blown nonwoven fabric, characterized in that the melt-blown nonwoven fabric comprises the electret masterbatch according to any one of claims 1 to 5.
10. A mask characterized by comprising the meltblown nonwoven fabric of claim 9.
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