CN115746549A - Polyamide composition and preparation method and application thereof - Google Patents
Polyamide composition and preparation method and application thereof Download PDFInfo
- Publication number
- CN115746549A CN115746549A CN202211518294.8A CN202211518294A CN115746549A CN 115746549 A CN115746549 A CN 115746549A CN 202211518294 A CN202211518294 A CN 202211518294A CN 115746549 A CN115746549 A CN 115746549A
- Authority
- CN
- China
- Prior art keywords
- hydroxybenzoate
- cyclodextrin
- ethylene
- polyamide composition
- parts
- 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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- 229920002647 polyamide Polymers 0.000 title claims abstract description 44
- 239000004952 Polyamide Substances 0.000 title claims abstract description 43
- 239000000203 mixture Substances 0.000 title claims abstract description 35
- 238000002360 preparation method Methods 0.000 title claims description 7
- 239000004014 plasticizer Substances 0.000 claims abstract description 41
- 229920000858 Cyclodextrin Polymers 0.000 claims abstract description 39
- -1 amide compound Chemical class 0.000 claims abstract description 34
- 239000004953 Aliphatic polyamide Substances 0.000 claims abstract description 21
- 229920003231 aliphatic polyamide Polymers 0.000 claims abstract description 21
- 239000004609 Impact Modifier Substances 0.000 claims abstract description 19
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims abstract description 19
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229920002292 Nylon 6 Polymers 0.000 claims description 16
- FJKROLUGYXJWQN-UHFFFAOYSA-M 4-hydroxybenzoate Chemical compound OC1=CC=C(C([O-])=O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-M 0.000 claims description 15
- 239000001116 FEMA 4028 Substances 0.000 claims description 14
- 229960004853 betadex Drugs 0.000 claims description 14
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 13
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 12
- HSEMFIZWXHQJAE-UHFFFAOYSA-N hexadecanamide Chemical compound CCCCCCCCCCCCCCCC(N)=O HSEMFIZWXHQJAE-UHFFFAOYSA-N 0.000 claims description 11
- 239000005060 rubber Substances 0.000 claims description 10
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 7
- 150000001408 amides Chemical class 0.000 claims description 7
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 7
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- KHBQMWCZKVMBLN-UHFFFAOYSA-N Benzenesulfonamide Chemical compound NS(=O)(=O)C1=CC=CC=C1 KHBQMWCZKVMBLN-UHFFFAOYSA-N 0.000 claims description 5
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 5
- 229930195729 fatty acid Natural products 0.000 claims description 5
- 239000000194 fatty acid Substances 0.000 claims description 5
- LYRFLYHAGKPMFH-UHFFFAOYSA-N octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(N)=O LYRFLYHAGKPMFH-UHFFFAOYSA-N 0.000 claims description 5
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims description 5
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N Benzoic acid Natural products OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- CLABUGUUEWHKMS-UHFFFAOYSA-N butyl prop-2-enoate;ethene;oxiran-2-ylmethyl 2-methylprop-2-enoate Chemical compound C=C.CCCCOC(=O)C=C.CC(=C)C(=O)OCC1CO1 CLABUGUUEWHKMS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Natural products OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 4
- NUVBSKCKDOMJSU-UHFFFAOYSA-N ethylparaben Chemical compound CCOC(=O)C1=CC=C(O)C=C1 NUVBSKCKDOMJSU-UHFFFAOYSA-N 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 4
- GDSRMADSINPKSL-HSEONFRVSA-N gamma-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO GDSRMADSINPKSL-HSEONFRVSA-N 0.000 claims description 4
- 229940080345 gamma-cyclodextrin Drugs 0.000 claims description 4
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N salicylic acid phenyl ester Natural products OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 claims description 4
- 229940124530 sulfonamide Drugs 0.000 claims description 4
- MOZDKDIOPSPTBH-UHFFFAOYSA-N Benzyl parahydroxybenzoate Chemical compound C1=CC(O)=CC=C1C(=O)OCC1=CC=CC=C1 MOZDKDIOPSPTBH-UHFFFAOYSA-N 0.000 claims description 3
- QFOHBWFCKVYLES-UHFFFAOYSA-N Butylparaben Chemical compound CCCCOC(=O)C1=CC=C(O)C=C1 QFOHBWFCKVYLES-UHFFFAOYSA-N 0.000 claims description 3
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical group CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 claims description 3
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- OHPZPBNDOVQJMH-UHFFFAOYSA-N n-ethyl-4-methylbenzenesulfonamide Chemical compound CCNS(=O)(=O)C1=CC=C(C)C=C1 OHPZPBNDOVQJMH-UHFFFAOYSA-N 0.000 claims description 3
- 239000001069 triethyl citrate Substances 0.000 claims description 3
- VMYFZRTXGLUXMZ-UHFFFAOYSA-N triethyl citrate Natural products CCOC(=O)C(O)(C(=O)OCC)C(=O)OCC VMYFZRTXGLUXMZ-UHFFFAOYSA-N 0.000 claims description 3
- 235000013769 triethyl citrate Nutrition 0.000 claims description 3
- JNXDCMUUZNIWPQ-UHFFFAOYSA-N trioctyl benzene-1,2,4-tricarboxylate Chemical group CCCCCCCCOC(=O)C1=CC=C(C(=O)OCCCCCCCC)C(C(=O)OCCCCCCCC)=C1 JNXDCMUUZNIWPQ-UHFFFAOYSA-N 0.000 claims description 3
- YZOUYRAONFXZSI-SBHWVFSVSA-N (1S,3R,5R,6R,8R,10R,11R,13R,15R,16R,18R,20R,21R,23R,25R,26R,28R,30R,31S,33R,35R,36R,37S,38R,39S,40R,41S,42R,43S,44R,45S,46R,47S,48R,49S)-5,10,15,20,25,30,35-heptakis(hydroxymethyl)-37,39,40,41,42,43,44,45,46,47,48,49-dodecamethoxy-2,4,7,9,12,14,17,19,22,24,27,29,32,34-tetradecaoxaoctacyclo[31.2.2.23,6.28,11.213,16.218,21.223,26.228,31]nonatetracontane-36,38-diol Chemical compound O([C@@H]([C@H]([C@@H]1OC)OC)O[C@H]2[C@@H](O)[C@@H]([C@@H](O[C@@H]3[C@@H](CO)O[C@@H]([C@H]([C@@H]3O)OC)O[C@@H]3[C@@H](CO)O[C@@H]([C@H]([C@@H]3OC)OC)O[C@@H]3[C@@H](CO)O[C@@H]([C@H]([C@@H]3OC)OC)O[C@@H]3[C@@H](CO)O[C@@H]([C@H]([C@@H]3OC)OC)O3)O[C@@H]2CO)OC)[C@H](CO)[C@H]1O[C@@H]1[C@@H](OC)[C@H](OC)[C@H]3[C@@H](CO)O1 YZOUYRAONFXZSI-SBHWVFSVSA-N 0.000 claims description 2
- PCWPQSDFNIFUPO-VDQKLNDWSA-N (1S,3R,5R,6S,8R,10R,11S,13R,15R,16S,18R,20R,21S,23R,25R,26S,28R,30R,31S,33R,35R,36R,37S,38R,39S,40R,41S,42R,43S,44R,45S,46R,47S,48R,49S)-37,39,41,43,45,47,49-heptakis(2-hydroxyethoxy)-5,10,15,20,25,30,35-heptakis(hydroxymethyl)-2,4,7,9,12,14,17,19,22,24,27,29,32,34-tetradecaoxaoctacyclo[31.2.2.23,6.28,11.213,16.218,21.223,26.228,31]nonatetracontane-36,38,40,42,44,46,48-heptol Chemical compound OCCO[C@H]1[C@H](O)[C@@H]2O[C@H]3O[C@H](CO)[C@@H](O[C@H]4O[C@H](CO)[C@@H](O[C@H]5O[C@H](CO)[C@@H](O[C@H]6O[C@H](CO)[C@@H](O[C@H]7O[C@H](CO)[C@@H](O[C@H]8O[C@H](CO)[C@@H](O[C@H]1O[C@@H]2CO)[C@@H](O)[C@@H]8OCCO)[C@@H](O)[C@@H]7OCCO)[C@@H](O)[C@@H]6OCCO)[C@@H](O)[C@@H]5OCCO)[C@@H](O)[C@@H]4OCCO)[C@@H](O)[C@@H]3OCCO PCWPQSDFNIFUPO-VDQKLNDWSA-N 0.000 claims description 2
- YVXKXPDUFSPDLR-UHFFFAOYSA-N 2-(2-decoxyethoxy)ethyl 4-hydroxybenzoate Chemical compound CCCCCCCCCCOCCOCCOC(=O)C1=CC=C(O)C=C1 YVXKXPDUFSPDLR-UHFFFAOYSA-N 0.000 claims description 2
- VUOYFXDPRVWCMI-UHFFFAOYSA-N 2-hexoxyethyl 4-hydroxybenzoate Chemical compound CCCCCCOCCOC(=O)C1=CC=C(O)C=C1 VUOYFXDPRVWCMI-UHFFFAOYSA-N 0.000 claims description 2
- AWTUIOQHXHBRDW-UHFFFAOYSA-N 2-hexyldecyl 4-hydroxybenzoate Chemical compound CCCCCCCCC(CCCCCC)COC(=O)C1=CC=C(O)C=C1 AWTUIOQHXHBRDW-UHFFFAOYSA-N 0.000 claims description 2
- VSWLEXRWTMYDTQ-UHFFFAOYSA-N 3-(3-hexoxypropoxy)propyl 4-hydroxybenzoate Chemical compound CCCCCCOCCCOCCCOC(=O)C1=CC=C(O)C=C1 VSWLEXRWTMYDTQ-UHFFFAOYSA-N 0.000 claims description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 claims description 2
- XPJVKCRENWUEJH-UHFFFAOYSA-N Isobutylparaben Chemical compound CC(C)COC(=O)C1=CC=C(O)C=C1 XPJVKCRENWUEJH-UHFFFAOYSA-N 0.000 claims description 2
- 229920009204 Methacrylate-butadiene-styrene Polymers 0.000 claims description 2
- IPRJXAGUEGOFGG-UHFFFAOYSA-N N-butylbenzenesulfonamide Chemical compound CCCCNS(=O)(=O)C1=CC=CC=C1 IPRJXAGUEGOFGG-UHFFFAOYSA-N 0.000 claims description 2
- 229920000459 Nitrile rubber Polymers 0.000 claims description 2
- 229920006152 PA1010 Polymers 0.000 claims description 2
- 239000005062 Polybutadiene Substances 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 2
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 229920001400 block copolymer Polymers 0.000 claims description 2
- WXCZUWHSJWOTRV-UHFFFAOYSA-N but-1-ene;ethene Chemical compound C=C.CCC=C WXCZUWHSJWOTRV-UHFFFAOYSA-N 0.000 claims description 2
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 2
- LKAVYBZHOYOUSX-UHFFFAOYSA-N buta-1,3-diene;2-methylprop-2-enoic acid;styrene Chemical compound C=CC=C.CC(=C)C(O)=O.C=CC1=CC=CC=C1 LKAVYBZHOYOUSX-UHFFFAOYSA-N 0.000 claims description 2
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 claims description 2
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- 239000000806 elastomer Substances 0.000 claims description 2
- 235000010228 ethyl p-hydroxybenzoate Nutrition 0.000 claims description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 2
- 229920006226 ethylene-acrylic acid Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- ONGMSIYISVEKDB-UHFFFAOYSA-N n-octylbenzenesulfonamide Chemical compound CCCCCCCCNS(=O)(=O)C1=CC=CC=C1 ONGMSIYISVEKDB-UHFFFAOYSA-N 0.000 claims description 2
- XAUGWFWQVYXATQ-UHFFFAOYSA-N n-phenylbenzenesulfonamide Chemical compound C=1C=CC=CC=1S(=O)(=O)NC1=CC=CC=C1 XAUGWFWQVYXATQ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920002857 polybutadiene Polymers 0.000 claims description 2
- 229920001748 polybutylene Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001195 polyisoprene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 235000010232 propyl p-hydroxybenzoate Nutrition 0.000 claims description 2
- QELSKZZBTMNZEB-UHFFFAOYSA-N propylparaben Chemical compound CCCOC(=O)C1=CC=C(O)C=C1 QELSKZZBTMNZEB-UHFFFAOYSA-N 0.000 claims description 2
- 229960003415 propylparaben Drugs 0.000 claims description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims description 2
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 2
- 229940097346 sulfobutylether-beta-cyclodextrin Drugs 0.000 claims description 2
- ODLHGICHYURWBS-LKONHMLTSA-N trappsol cyclo Chemical compound CC(O)COC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)COCC(O)C)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1COCC(C)O ODLHGICHYURWBS-LKONHMLTSA-N 0.000 claims description 2
- 239000005711 Benzoic acid Substances 0.000 claims 1
- QZPNMGNMSVMMRI-UHFFFAOYSA-N OC1=CC=C(C(=O)OC(C)CCCCOCCCCCC)C=C1 Chemical compound OC1=CC=C(C(=O)OC(C)CCCCOCCCCCC)C=C1 QZPNMGNMSVMMRI-UHFFFAOYSA-N 0.000 claims 1
- 125000003368 amide group Chemical group 0.000 claims 1
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 claims 1
- 229940092714 benzenesulfonic acid Drugs 0.000 claims 1
- 235000010233 benzoic acid Nutrition 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 31
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 abstract description 17
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 abstract description 16
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- 230000000052 comparative effect Effects 0.000 description 14
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- 239000003963 antioxidant agent Substances 0.000 description 4
- 230000003078 antioxidant effect Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 125000004018 acid anhydride group Chemical group 0.000 description 3
- 150000008064 anhydrides Chemical class 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
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- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 2
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- 125000003277 amino group Chemical group 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
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- 239000011229 interlayer Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
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- 230000001737 promoting effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XIZNSFKZKZTGNG-UHFFFAOYSA-N 2-butylbenzenesulfonamide Chemical compound CCCCC1=CC=CC=C1S(N)(=O)=O XIZNSFKZKZTGNG-UHFFFAOYSA-N 0.000 description 1
- SSADPHQCUURWSW-UHFFFAOYSA-N 3,9-bis(2,6-ditert-butyl-4-methylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound CC(C)(C)C1=CC(C)=CC(C(C)(C)C)=C1OP1OCC2(COP(OC=3C(=CC(C)=CC=3C(C)(C)C)C(C)(C)C)OC2)CO1 SSADPHQCUURWSW-UHFFFAOYSA-N 0.000 description 1
- VTQVXHROALOIHU-UHFFFAOYSA-N 4-(4-hexoxybutoxy)butyl 4-hydroxybenzoate Chemical compound CCCCCCOCCCCOCCCCOC(=O)C1=CC=C(O)C=C1 VTQVXHROALOIHU-UHFFFAOYSA-N 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- 229920003314 Elvaloy® Polymers 0.000 description 1
- 229920003317 Fusabond® Polymers 0.000 description 1
- OKOBUGCCXMIKDM-UHFFFAOYSA-N Irganox 1098 Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)NCCCCCCNC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 OKOBUGCCXMIKDM-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920003853 Ultramid® B40 L Polymers 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- KHBQMWCZKVMBLN-IDEBNGHGSA-N benzenesulfonamide Chemical group NS(=O)(=O)[13C]1=[13CH][13CH]=[13CH][13CH]=[13CH]1 KHBQMWCZKVMBLN-IDEBNGHGSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- DRTODOJMOBSZCA-UHFFFAOYSA-N ethyl 2-(3-hexoxy-2-hydroxypropoxy)benzoate Chemical compound CCCCCCOCC(O)COC1=CC=CC=C1C(=O)OCC DRTODOJMOBSZCA-UHFFFAOYSA-N 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229940037312 stearamide Drugs 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000012745 toughening agent Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses a polyamide composition, which comprises the following components in parts by weight: 50-80 parts of PA; 15-40 parts of long-carbon-chain aliphatic polyamide; 5-30 parts of impact modifier; 2-8 parts of a plasticizer; 2-5 parts of cyclodextrin or a derivative thereof; 5-20% of low molecular amide compound by weight of cyclodextrin or its derivative. According to the invention, cyclodextrin or derivatives thereof with specific content are compounded with the low-molecular-weight amide compound, so that the addition amount of substances containing maleic anhydride groups can be effectively reduced, the bonding force between the polyamide composition containing long-carbon-chain aliphatic polyamide and the EVOH layer can be effectively improved, and the composite material has the advantage of good chemical resistance.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a polyamide composition and a preparation method and application thereof.
Background
At present, polyamide materials are mature to be applied to fuel oil pipelines, in order to achieve excellent mechanical properties (such as toughness and impact strength), barrier property and chemical corrosion resistance, a multilayer pipeline structure is usually adopted, and different functions are exerted on the composition of the multilayer pipeline according to the positions of pipe layers, so that the whole pipeline is integrally adaptive to the working condition of medium conveying. Typically, the number of layers is from 2 to 5 depending on the design, the inner layer being in direct contact with the medium and being required to withstand the medium and prevent its penetration, the middle layer having a high barrier property, the outer layer having a structural support, and typically also containing a bond promoting layer to prevent delamination. EP-a-1645412 discloses a fuel cell tube using polyamide as an inner layer, EVOH as a barrier layer, and an additional bonding-promoting layer for increasing the bonding strength between the polyamide and EVOH layers. EP-a-1036968 discloses a multilayer tube structure as a fuel pipe using PA12, PA11 or polyamides based on other lactams, amino acids as a bonding promoting layer to improve the bonding of the EVOH layer to the outer layer. The multilayer pipe structure disclosed in EP-a-216826 indicates that the interlayer bonding has a very important role during long-term contact with fuel and uses a polyamide copolymer based on PA12 as a structure-promoting layer to improve the bonding of the EVOH layer to the outer layer. However, the increase of the number of layers inevitably increases the thickness of the pipe, which not only increases the cost, but also increases the diameter of the pipe, thereby reducing the applicability.
EVOH is an ethylene vinyl alcohol copolymer, the structure of which mainly comprises methylene and hydroxyl, and has higher polarity, hydrophilicity and high crystallization capacity, and the melting point is between 160 and 200 ℃. Compared with the traditional polyamides PA6 and PA66, the long-carbon-chain aliphatic polyamide has higher methylene chain length, and as the chain length is increased, the hydrophobicity is improved and the polarity is weakened. EVOH used for multilayer tubing generally requires a higher proportion of vinyl alcohol to improve crystallinity and barrier properties, but the long methylene segments as long chain nylons make it less compatible with EVOH than traditional nylon materials, thus negatively affecting the bonding force. In the prior art, in order to avoid increasing the number of tube layers, in the prior art, an excessive amount of an anhydride grafting toughening agent with too high anhydride grafting rate is added as a bonding promoter in the outer layer, and the outer layer also comprises an impact modifier, a plasticizer, PA6 and other polyamides. However, since the reactivity of the acid anhydride group is too high, if the acid anhydride group content is large, the terminal carboxyl group or amino group may react with the acid anhydride group to cause a large increase in the viscosity of the system and directly affect the extrusion rate. For example, CN111511552A discloses a multilayer nylon tube, in which good chemical resistance is obtained by a high content of long carbon chain aliphatic polyamide, specifically an outer layer of which is composed of 5-35% PA6, 30-60% PA612/PA614/PA616/PA618 (long carbon chain aliphatic polyamide), but too high a content of long carbon chain aliphatic polyamide results in a reduced bonding force with EVOH, so that 3-10% of an adhesion promoter (anhydride, especially maleic anhydride grafted polyethylene) is used, while the layer also contains 9-30% of an impact modifier (also containing maleic anhydride groups), and a large amount of maleic anhydride groups is liable to cause an increase in melt viscosity during melt processing. Therefore, the development of a polyamide composition without adding a large amount of maleic anhydride-containing substance has practical application value.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a polyamide composition having excellent adhesion to an EVOH layer and also having an advantage of good chemical resistance.
Another object of the present invention is to provide a process for producing the above polyamide composition and its use.
The invention is realized by the following technical scheme:
the polyamide composition comprises the following components in parts by weight:
50-80 parts of PA (polyamide);
15-40 parts of long-carbon-chain aliphatic polyamide;
5-30 parts of impact modifier;
2-8 parts of a plasticizer;
2-5 parts of cyclodextrin or cyclodextrin derivative;
5-20% of low molecular amide compound cyclodextrin or its derivative;
the repeating unit of the long carbon chain aliphatic polyamide is composed of aliphatic diamine with the carbon number not less than 6 and aliphatic diacid with the carbon number not less than 10.
Preferably, the content of the low molecular amide compound is 8 to 13 percent of the weight of the cyclodextrin or the derivative thereof; under the content of the preferable low-molecular-weight amide compound, the compatibility of PA6 and long-carbon-chain aliphatic polyamide is improved more obviously, and further, the chemical resistance is higher.
Optionally, the low molecular amide compound is an amide compound obtained by reacting a fatty acid with a compound containing at least 1 amine group, and is selected from at least one of erucamide, oleamide, stearamide, palmitamide and ethylene bis stearamide; at least one of oleamide and palmitamide is preferable. The preferable low-molecular-weight amide compound can improve the compatibility of the PA6 and the long-carbon-chain aliphatic polyamide, so that the chemical resistance of the polyamide composition is better.
The long carbon chain aliphatic polyamide is selected from at least one of PA610, PA612, PA1010 and PA 1012.
Optionally, the cyclodextrin or the derivative thereof is at least one selected from beta-cyclodextrin, gamma-cyclodextrin, hydroxypropyl-beta-cyclodextrin, sulfobutyl ether-beta-cyclodextrin, disaccharide-beta-cyclodextrin, methyl-beta-cyclodextrin or hydroxyethyl-beta-cyclodextrin;
preferably, the cyclodextrin or its derivative is selected from beta-cyclodextrin. The polyamide composition, preferably beta-cyclodextrin, has better chemical resistance.
Optionally, the impact modifier is selected from at least one of maleic anhydride grafted ethylene-octene copolymer, polyethylene, polypropylene, polybutylene, polyisoprene, ethylene-propylene rubber, ethylene-propylene-butadiene rubber, maleic anhydride grafted linear low density polyethylene, ethylene-butene rubber, ethylene-acrylate rubber, butadiene-styrene rubber, butadiene-acrylate rubber, ethylene-octene rubber, butadiene acrylonitrile rubber, ethylene-acrylic acid polymer, ethylene-vinyl acetate polymer, ethylene-acrylate polymer, maleic anhydride grafted ethylene butene copolymer, acrylonitrile-butadiene-styrene copolymer, styrene-ethylene-butadiene-styrene block copolymer, ethylene-n-butyl acrylate-glycidyl methacrylate, styrene-butadiene-styrene copolymer, methacrylate-butadiene-styrene type core/shell elastomer.
The plasticizer is selected from at least one of benzene sulfonic acid amide plasticizers, hydroxybenzoic acid ester plasticizers, citric acid ester plasticizers and benzoate plasticizers; preferred are benzene sulfonic acid amide plasticizers.
Optionally, the hydroxybenzoate plasticizer is at least one selected from phenyl o-hydroxybenzoate, butyl p-hydroxybenzoate, ethyl 4-hydroxybenzoate, propyl 4-hydroxybenzoate, 2-hexyldecyl-4-hydroxybenzoate, ethyl 2- [3- (hexyloxy) -2-hydroxypropoxy ] -benzoate, hexyloxyethyl p-hydroxybenzoate, hexyloxypropoxypropyl p-hydroxybenzoate, hexyloxybutyloxybutyl p-hydroxybenzoate, octyloxyethyl p-hydroxybenzoate, octyloxypropoxypropyl p-hydroxybenzoate, octyloxybutyloxybutyl p-hydroxybenzoate, isobutyl 4-hydroxybenzoate, 2' -ethylhexyloxyethoxyethyl p-hydroxybenzoate, 2' -ethylhexyloxypropoxypropoxypropyl p-hydroxybenzoate, benzyl-4-hydroxybenzoate, 2' -ethylhexyloxybutoxybutyl p-hydroxybenzoate, decyloxyethoxyethyl p-hydroxybenzoate, decyloxypropypropyl p-hydroxybenzoate, decyloxoxybutoxybutyl p-hydroxybenzoate;
the benzene sulfonic acid amide plasticizer is at least one selected from N-butyl benzene sulfonic acid amide, N-ethyl-p-toluene sulfonamide, N-diethyl benzene sulfonamide, N-diethyl-p-toluene sulfonamide, N-dibutyl benzene sulfonamide, N-octyl benzene sulfonamide and N-phenyl benzene sulfonamide; the citrate plasticizer is selected from triethyl citrate; the benzoate plasticizer is selected from trioctyl trimellitate.
The relative viscosity of the polyamide 6 is 2.7-4.5; the long carbon chain aliphatic polyamide has a relative viscosity of 2.0 to 3.5, measured according to ISO 307.
Whether 0-5 parts of auxiliary agent is added or not can be determined according to actual requirements, and the auxiliary agent is selected from at least one of an antioxidant and a lubricant.
The antioxidant can be hindered phenol antioxidant (such as Irganox 1098), phosphite antioxidant (such as PEP-36).
The lubricant may be a fatty acid, fatty acid derivative, fatty acid ester, or the like.
The preparation method of the polyamide composition comprises the following steps: according to the proportion, the components are uniformly mixed, and are extruded and granulated by a double-screw extruder, wherein the temperature range of the screws is 210-250 ℃, and the rotating speed range is 200-500rpm, so that the polyamide composite material is obtained.
Use of the polyamide composition according to the invention for the preparation of an outer layer of a pipe.
The invention has the following beneficial effects:
first, low molecular weight amide compounds have ideal compatibility with cyclodextrin, and they all have the ability to form hydrogen bond structures with the amide structure of long carbon chain aliphatic polyamide and the vinyl alcohol structure of EVOH, thereby improving the deficiency that the polyamide resin substrate lacks enough amide functional groups to have weak bonding force with EVOH layer. Meanwhile, the ability of cyclodextrin to form hydrogen bonds with long carbon chain aliphatic polyamides also affects the penetration of chemicals into the resin matrix, and thus the chemical resistance of the composition.
Secondly, the carbon chain structure of the low molecular amide compound and the carbon chain structure of the long carbon chain aliphatic polyamide/PA 6 have the characteristic of similar compatibility, so that the low molecular amide compound and the cyclodextrin compound are well dispersed in the polyamide resin base material and used as a compatilizer to improve the compatibility of the PA6 and the long carbon chain polyamide, the long carbon chain polyamide is more excellent in dispersion, the components tend to be homogeneous, and the excellent chemical resistance under the condition of lower long carbon chain polyamide (the content of the long carbon chain aliphatic polyamide is less than that of the PA 6) content is further realized.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
The examples of the invention and the comparative examples used the following raw materials:
PA6: ultramid B40L, relative viscosity 3.8, pasteur;
PA610: f-150, relative viscosity 2.5, wide boundless;
PA612: a-150, relative viscosity 2.5, wide whole boundless;
PA1012: PA1012-G, relative viscosity 2.5, dongchen;
impact modifier A: maleic anhydride grafted ethylene-octene copolymer (mPOE) available from dupont under the designation Fusabond N493;
impact modifier B: maleic anhydride grafted linear low density polyethylene (mLLDPE) available from UBE under the designation UBE BOND F3000;
impact modifier C: maleic anhydride grafted ethylene butene copolymer (mEBA), available from mitsui chemistry, TAFMER MH5020;
impact modifier D: ethylene-n-butyl acrylate-glycidyl methacrylate (E-nBA-GMA) available from DuPont under the trade designation Elvaloy PTW.
And (3) a plasticizer A: n-butyl benzene sulfonic acid amide, suzhou jinzhou chemical industry;
and (3) a plasticizer B: n-ethyl-p-toluenesulfonamide, hefeijian chemical Co., ltd;
and (3) a plasticizer C: benzyl-4-hydroxybenzoates, hubei Kowadd chemical Co., ltd;
and (3) a plasticizer D: butyl p-hydroxybenzoate, sigma-Aldrich;
and (3) a plasticizer E: triethyl citrate, guangzhou spinning;
and (3) a plasticizer F: trioctyl trimellitate, guangzhou spin plastic;
erucamide: a Heda chemical;
oleic acid amide: a Heda chemical;
stearic acid amide: a Heda chemical;
palmitic acid amide: shanghai Ji to Biochemical technology, inc.;
ethylene bis stearamide: a Korean cell;
beta-cyclodextrin: sigma-Aldrich;
gamma-cyclodextrin: sigma-Aldrich.
Examples and comparative examples preparation of polyamide compositions: the components are uniformly mixed according to the mixture ratio, and are extruded and granulated by a double-screw extruder, wherein the temperature range of screws is 210-250 ℃, and the rotating speed range is 300-400rpm, so that the polyamide composition is obtained.
The test results of each item are as follows:
(1) Interlayer peeling test: the polyamide composite material is used as the outer layer of the pipe, and the EVOH is used as the inner layer of the pipe, and the pipe is manufactured by extrusion. Soaking a 0.3m pipe cut according to SAEJ2260 in gasoline containing 15% of methanol at the temperature of 40 ℃ for 1000 hours, cutting the pipe along the extrusion direction, and judging whether the two-layer structure with the u-shaped section has the stripping condition. The separation was classified as no peeling, slight peeling, sharp separation, and severe peeling.
(2) Chemical resistance: tensile strength specimens were prepared according to ISO527-2, tested for tensile strength N1 before immersion, and tested for tensile strength N2 after immersion in 95# gasoline (containing 10% ethanol) at 50 ℃ for 100 hours, calculating tensile strength retention N2/N1 x 100%.
Table 1: examples 1-8 Polyamide compositions with respective component contents (parts by weight) and test results
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | Example 7 | Example 8 | |
| PA6 | 60 | 60 | 60 | 50 | 80 | 60 | 60 | 60 |
| PA610 | 20 | 15 | 40 | 20 | 20 | 20 | ||
| PA612 | 20 | |||||||
| PA 1012 | 20 | |||||||
| Impact modifier A | 10 | 10 | 10 | 5 | 30 | 10 | 10 | 10 |
| Plasticizer A | 4 | 4 | 4 | 2 | 8 | 4 | 4 | 4 |
| Beta-cyclodextrin | 3 | 3 | 3 | 2 | 5 | 3 | 3 | 3 |
| Erucamide | 0.15 | 0.15 | 0.15 | 0.4 | 0.5 | 0.24 | 0.39 | 0.6 |
| Peeled state | Is free of | Is free of | Is free of | Is free of | Is free of | Is free of | Is free of | Is free of |
| Chemical resistance of% | 91 | 90 | 91 | 89 | 94 | 95 | 94 | 90 |
As is clear from examples 1/6 to 8, the preferable range of the content of the low molecular amide-based compound is more excellent in chemical resistance.
Table 2: examples 9-12 Polyamide compositions with respective component amounts (parts by weight) and test results
| Example 9 | Example 10 | Example 11 | Example 12 | |
| PA6 | 60 | 60 | 60 | 60 |
| PA610 | 20 | 20 | 20 | 20 |
| Impact modifier A | 10 | |||
| Impact modifier B | 10 | |||
| Impact modifier C | 10 | |||
| Impact modifier D | 10 | |||
| Plasticizer A | 4 | 4 | 4 | 4 |
| Beta-cyclodextrin | 3 | 3 | 3 | |
| Gamma-cyclodextrin | 3 | |||
| Erucamide | 0.24 | 0.24 | 0.24 | 0.24 |
| Peeled state | Is composed of | Is composed of | Is free of | Is free of |
| Chemical resistance of% | 95 | 94 | 95 | 90 |
As can be seen from examples 6/12, beta-cyclodextrin is preferred, which has better chemical resistance.
Table 3: examples 13-17 Polyamide compositions with respective component contents (parts by weight) and test results
| Example 13 | Example 14 | Example 15 | Example 16 | Example 17 | |
| PA6 | 60 | 60 | 60 | 60 | 60 |
| PA610 | 20 | 20 | 20 | 20 | 20 |
| Impact modifier A | 10 | 10 | 10 | 10 | 10 |
| Plasticizer B | 4 | ||||
| Plasticizer C | 4 | ||||
| Plasticizer D | 4 | ||||
| Plasticizer E | 4 | ||||
| Plasticizer F | 4 | ||||
| Beta-cyclodextrin | 3 | 3 | 3 | 3 | 3 |
| Erucamide | 0.24 | 0.24 | 0.24 | 0.24 | 0.24 |
| State of peeling off | Is free of | Is free of | Is composed of | Is composed of | Is composed of |
| Chemical resistance of% | 96 | 90 | 91 | 89 | 92 |
As is clear from examples 6/13 to 17, the plasticizer is preferably a benzenesulfonamide type plasticizer, and is more excellent in chemical resistance.
Table 4: EXAMPLES 18 TO 21 Polyamide compositions with respective component contents (parts by weight) and test results
| Example 18 | Example 19 | Example 20 | Example 21 | |
| PA6 | 50 | 50 | 50 | 50 |
| PA610 | 15 | 15 | 15 | 15 |
| Impact modifier A | 5 | 5 | 5 | 5 |
| Plasticizer A | 2 | 2 | 2 | 2 |
| Beta-cyclodextrin | 2 | 2 | 2 | 2 |
| Oleic acid amides | 0. | |||
| Stearic acid amides | 0. | |||
| Palmitic acid amides | 0. | |||
| Ethylene bis stearamide | 0. | |||
| Peeled state | Is free of | Is composed of | Is free of | Is free of |
| Chemical resistance of% | 97 | 90 | 95 | 91 |
From examples 4/18 to 21, it is clear that the low molecular amide compounds, preferably oleamide and palmitamide, have better chemical resistance.
Table 5: comparative example Polyamide composition Components amounts (parts by weight) and test results
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | Comparative example 7 | |
| PA6 | 60 | 60 | 60 | 60 | 60 | 60 | 60 |
| PA610 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Impact modifier A | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Plasticizer A | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Beta-cyclodextrin | 3 | 3 | 3 | 3 | 0 | 0.5 | 6.5 |
| Erucamide | 0 | 0.1 | 0.75 | 1 | 0.24 | 0.15 | 0.3 |
| Peeled state | Light and slight | Light and slight | Is composed of | Slight, it is a little | Is obvious | Is obvious to | Is composed of |
| Chemical resistance of% | 71 | 83 | 81 | 82 | 80 | 86 | 81 |
As can be seen from comparative examples 1/2, if the low molecular weight amide compound is not contained or the content is too low, the compatible effect of the long carbon chain aliphatic polyamide cannot be achieved, and therefore, the chemical resistance is poor; meanwhile, the cyclodextrin or the derivative thereof cannot be used for further improving the binding force with the EVOH.
As is clear from comparative examples 3/4, if the content of the low-molecular-weight amide-based compound is too high, the chemical resistance is not sufficient by itself, and therefore, the chemical resistance is rather lowered by too high the amount added. And if the amount is too high, the bonding force with EVOH is rather lowered.
As can be seen from comparative examples 5/6, if cyclodextrin or its derivative is not contained in an excessively low amount, the bonding force with EVOH is poor, and the chemical resistance is general.
As can be seen from comparative example 7, if the content of cyclodextrin or its derivative is too high, the chemical resistance is rather seriously lowered.
Claims (10)
1. The polyamide composition is characterized by comprising the following components in parts by weight:
50-80 parts of PA;
15-40 parts of long-carbon-chain aliphatic polyamide;
5-30 parts of impact modifier;
2-8 parts of a plasticizer;
2-5 parts of cyclodextrin or a derivative thereof;
5-20% of low molecular amide compound cyclodextrin or derivatives thereof;
the repeating unit of the long carbon chain aliphatic polyamide is composed of aliphatic diamine with the carbon number not less than 6 and aliphatic diacid with the carbon number not less than 10.
2. The polyamide composition as claimed in claim 1, wherein the low molecular amide compound is contained in an amount of 8 to 13% by weight based on the amount of the cyclodextrin or the derivative thereof; the low molecular amide compound is an amide compound obtained by reacting fatty acid with a compound containing at least 1 amido, and is selected from at least one of erucamide, oleamide, stearic acid amide, palmitic acid amide and ethylene bis-stearamide; at least one of oleamide and palmitamide is preferable.
3. The polyamide composition as claimed in claim 1, wherein the long carbon chain aliphatic polyamide is at least one selected from the group consisting of PA610, PA612, PA1010, and PA 1012.
4. The polyamide composition of claim 1, wherein the cyclodextrin or the derivative thereof is selected from at least one of β -cyclodextrin, γ -cyclodextrin, hydroxypropyl- β -cyclodextrin, sulfobutyl ether- β -cyclodextrin, disaccharide- β -cyclodextrin, methyl- β -cyclodextrin, or hydroxyethyl- β -cyclodextrin; preferably, the cyclodextrin or its derivative is selected from beta-cyclodextrin.
5. The polyamide composition of claim 1, wherein the impact modifier is selected from at least one of a maleic anhydride grafted ethylene-octene copolymer, polyethylene, polypropylene, polybutylene, polyisoprene, ethylene-propylene rubber, ethylene-propylene-butadiene rubber, maleic anhydride grafted linear low density polyethylene, ethylene-butene rubber, ethylene-acrylate rubber, butadiene-styrene rubber, butadiene-acrylate rubber, ethylene-octene rubber, butadiene acrylonitrile rubber, ethylene-acrylic acid polymer, ethylene-vinyl acetate polymer, ethylene-acrylate polymer, maleic anhydride grafted ethylene-butene copolymer, acrylonitrile-butadiene-styrene copolymer, styrene-ethylene-butadiene-styrene block copolymer, ethylene-n-butyl acrylate-glycidyl methacrylate, styrene-butadiene-styrene copolymer, methacrylate-butadiene-styrene type core/shell elastomer.
6. The polyamide composition of claim 1, wherein the plasticizer is at least one selected from the group consisting of benzene sulfonic acid amide plasticizers, hydroxybenzoic acid ester plasticizers, citric acid ester plasticizers, and benzoic acid ester plasticizers; amide benzene sulfonic acid plasticizers are preferred.
7. Polyamide composition according to claim 6, characterized in that, the hydroxybenzoate plasticizer is at least one selected from phenyl o-hydroxybenzoate, butyl p-hydroxybenzoate, ethyl 4-hydroxybenzoate, propyl 4-hydroxybenzoate, 2-hexyldecyl-4-hydroxybenzoate, 2- [3- (hexyloxy) -2-hydroxypropoxy ] -ethyl benzoate, hexyloxyethyl p-hydroxybenzoate, hexyloxypropoxypropyl p-hydroxybenzoate, hexyloxybutylethyl p-hydroxybenzoate, octyloxyethyl p-hydroxybenzoate, octyloxypropoxypropyl p-hydroxybenzoate, octyloxybutylethyl p-hydroxybenzoate, isobutyl 4-hydroxybenzoate, 2' -ethylhexyloxyethoxyethyl p-hydroxybenzoate, 2' -ethylhexyloxypropoxypropoxypropyl p-hydroxybenzoate, benzyl-4-hydroxybenzoate, 2' -ethylhexyloxybutylethylbutoxy p-hydroxybenzoate, decyloxyethoxyethyl p-hydroxybenzoate, decyloxypropoxypropypropyl p-hydroxybenzoate and decyloxoxybutylbutylbutylbutylbutylphonate; the benzene sulfonic acid amide plasticizer is at least one selected from N-butyl benzene sulfonic acid amide, N-ethyl-p-toluene sulfonamide, N-diethyl benzene sulfonamide, N-diethyl-p-toluene sulfonamide, N-dibutyl benzene sulfonamide, N-octyl benzene sulfonamide and N-phenyl benzene sulfonamide; the citrate ester plasticizer is selected from triethyl citrate; the benzoate plasticizer is selected from trioctyl trimellitate.
8. The polyamide composition as claimed in claim 1, wherein the PA6 has a relative viscosity of 2.7 to 4.5; the relative viscosity of the long carbon chain aliphatic polyamide is 2.0-3.5.
9. Process for the preparation of a polyamide composition according to any one of claims 1 to 8, characterized in that it comprises the following steps: the components are uniformly mixed according to the mixture ratio, and are extruded and granulated by a double-screw extruder, wherein the temperature range of screws is 210-250 ℃, and the rotating speed range is 200-500rpm, so that the polyamide composition is obtained.
10. Use of a polyamide composition according to any one of claims 1 to 8 for the production of an outer layer of a pipe.
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| CN103619555A (en) * | 2011-04-11 | 2014-03-05 | 罗地亚运作公司 | Method for production of tank having high fluid-barrier properties |
| CN106479173A (en) * | 2016-10-28 | 2017-03-08 | 上海耐特复合材料制品有限公司 | Good print performance fire-retardant nylon composite and preparation method thereof |
| CN106497042A (en) * | 2016-10-28 | 2017-03-15 | 上海耐特复合材料制品有限公司 | Environment-friendly type bromine system fire-retardant nylon composite and preparation method thereof |
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| EP3584365A1 (en) * | 2018-06-20 | 2019-12-25 | Papier-Mettler KG | Aqueous paper coating composition, paper sheet coated with the paper coating composition, method for the production of coated paper sheet, bag or pocket made from the coated paper sheet and use of the bag or pocket |
| CN111087799A (en) * | 2019-12-18 | 2020-05-01 | 南京聚隆科技股份有限公司 | Transparent flame-retardant nylon material and preparation method thereof |
| CN111218105A (en) * | 2018-11-23 | 2020-06-02 | 万华化学集团股份有限公司 | Thermoplastic polyurethane elastomer composition and preparation method and application thereof |
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| CN103619555A (en) * | 2011-04-11 | 2014-03-05 | 罗地亚运作公司 | Method for production of tank having high fluid-barrier properties |
| CN103597010A (en) * | 2011-04-13 | 2014-02-19 | 罗地亚运作公司 | Stabilised polyamide |
| CN107810239A (en) * | 2015-06-19 | 2018-03-16 | 巴斯夫欧洲公司 | Daiamid composition with high melt flows and good mechanical performance |
| CN106479173A (en) * | 2016-10-28 | 2017-03-08 | 上海耐特复合材料制品有限公司 | Good print performance fire-retardant nylon composite and preparation method thereof |
| CN106497042A (en) * | 2016-10-28 | 2017-03-15 | 上海耐特复合材料制品有限公司 | Environment-friendly type bromine system fire-retardant nylon composite and preparation method thereof |
| EP3584365A1 (en) * | 2018-06-20 | 2019-12-25 | Papier-Mettler KG | Aqueous paper coating composition, paper sheet coated with the paper coating composition, method for the production of coated paper sheet, bag or pocket made from the coated paper sheet and use of the bag or pocket |
| CN111218105A (en) * | 2018-11-23 | 2020-06-02 | 万华化学集团股份有限公司 | Thermoplastic polyurethane elastomer composition and preparation method and application thereof |
| CN111087799A (en) * | 2019-12-18 | 2020-05-01 | 南京聚隆科技股份有限公司 | Transparent flame-retardant nylon material and preparation method thereof |
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