CN112778454B - Polyepoxy chain extender and preparation method and application thereof - Google Patents
Polyepoxy chain extender and preparation method and application thereof Download PDFInfo
- Publication number
- CN112778454B CN112778454B CN202110086062.9A CN202110086062A CN112778454B CN 112778454 B CN112778454 B CN 112778454B CN 202110086062 A CN202110086062 A CN 202110086062A CN 112778454 B CN112778454 B CN 112778454B
- Authority
- CN
- China
- Prior art keywords
- chain extender
- polyepoxy
- methacrylate
- glycidyl methacrylate
- chain
- 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.)
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- 239000004970 Chain extender Substances 0.000 title claims abstract description 100
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- -1 alkyl methacrylate Chemical compound 0.000 claims abstract description 49
- 239000000178 monomer Substances 0.000 claims abstract description 30
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229920001577 copolymer Polymers 0.000 claims abstract description 19
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 19
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 19
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002270 dispersing agent Substances 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 11
- 239000012986 chain transfer agent Substances 0.000 claims description 10
- 239000003999 initiator Substances 0.000 claims description 9
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical group COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 5
- 239000003995 emulsifying agent Substances 0.000 claims description 2
- 208000034530 PLAA-associated neurodevelopmental disease Diseases 0.000 claims 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims 1
- 125000003700 epoxy group Chemical group 0.000 abstract description 22
- 229920000642 polymer Polymers 0.000 abstract description 18
- 239000000463 material Substances 0.000 abstract description 10
- 239000004593 Epoxy Substances 0.000 abstract description 8
- 238000009825 accumulation Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 239000006185 dispersion Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 229920002521 macromolecule Polymers 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000007334 copolymerization reaction Methods 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000005977 Ethylene Substances 0.000 description 17
- 238000012360 testing method Methods 0.000 description 15
- 239000000203 mixture Substances 0.000 description 14
- 239000004626 polylactic acid Substances 0.000 description 9
- 239000000155 melt Substances 0.000 description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 8
- 229920000747 poly(lactic acid) Polymers 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 4
- UENWRTRMUIOCKN-UHFFFAOYSA-N benzyl thiol Chemical compound SCC1=CC=CC=C1 UENWRTRMUIOCKN-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000005014 poly(hydroxyalkanoate) Substances 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- 229920000903 polyhydroxyalkanoate Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 150000003440 styrenes Chemical class 0.000 description 3
- 150000003573 thiols Chemical class 0.000 description 3
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 3
- PMBXCGGQNSVESQ-UHFFFAOYSA-N 1-Hexanethiol Chemical compound CCCCCCS PMBXCGGQNSVESQ-UHFFFAOYSA-N 0.000 description 2
- OWPUOLBODXJOKH-UHFFFAOYSA-N 2,3-dihydroxypropyl prop-2-enoate Chemical compound OCC(O)COC(=O)C=C OWPUOLBODXJOKH-UHFFFAOYSA-N 0.000 description 2
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 235000011148 calcium chloride Nutrition 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 2
- WKHFQLWKISTQOE-UHFFFAOYSA-N ethene;naphthalene Chemical group C=C.C1=CC=CC2=CC=CC=C21 WKHFQLWKISTQOE-UHFFFAOYSA-N 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 150000007529 inorganic bases Chemical class 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 238000010094 polymer processing Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 238000010557 suspension polymerization reaction Methods 0.000 description 2
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 2
- FVQMJJQUGGVLEP-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOOC(C)(C)C FVQMJJQUGGVLEP-UHFFFAOYSA-N 0.000 description 1
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- KDGNCLDCOVTOCS-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy propan-2-yl carbonate Chemical compound CC(C)OC(=O)OOC(C)(C)C KDGNCLDCOVTOCS-UHFFFAOYSA-N 0.000 description 1
- WHFHDVDXYKOSKI-UHFFFAOYSA-N 1-ethenyl-4-ethylbenzene Chemical compound CCC1=CC=C(C=C)C=C1 WHFHDVDXYKOSKI-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- 125000003504 2-oxazolinyl group Chemical group O1C(=NCC1)* 0.000 description 1
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- DKIDEFUBRARXTE-UHFFFAOYSA-N 3-mercaptopropanoic acid Chemical compound OC(=O)CCS DKIDEFUBRARXTE-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- 239000007977 PBT buffer Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 206010057040 Temperature intolerance Diseases 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000008543 heat sensitivity Effects 0.000 description 1
- LNCPIMCVTKXXOY-UHFFFAOYSA-N hexyl 2-methylprop-2-enoate Chemical compound CCCCCCOC(=O)C(C)=C LNCPIMCVTKXXOY-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- PJUIMOJAAPLTRJ-UHFFFAOYSA-N monothioglycerol Chemical compound OCC(O)CS PJUIMOJAAPLTRJ-UHFFFAOYSA-N 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 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 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- GYDSPAVLTMAXHT-UHFFFAOYSA-N pentyl 2-methylprop-2-enoate Chemical compound CCCCCOC(=O)C(C)=C GYDSPAVLTMAXHT-UHFFFAOYSA-N 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- BOQSSGDQNWEFSX-UHFFFAOYSA-N propan-2-yl 2-methylprop-2-enoate Chemical compound CC(C)OC(=O)C(C)=C BOQSSGDQNWEFSX-UHFFFAOYSA-N 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- MNCGMVDMOKPCSQ-UHFFFAOYSA-M sodium;2-phenylethenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C=CC1=CC=CC=C1 MNCGMVDMOKPCSQ-UHFFFAOYSA-M 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- NBOMNTLFRHMDEZ-UHFFFAOYSA-N thiosalicylic acid Chemical compound OC(=O)C1=CC=CC=C1S NBOMNTLFRHMDEZ-UHFFFAOYSA-N 0.000 description 1
- 229940103494 thiosalicylic acid Drugs 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/26—Esters containing oxygen in addition to the carboxy oxygen
- C08F220/32—Esters containing oxygen in addition to the carboxy oxygen containing epoxy radicals
- C08F220/325—Esters containing oxygen in addition to the carboxy oxygen containing epoxy radicals containing glycidyl radical, e.g. glycidyl (meth)acrylate
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
Abstract
The invention relates to the technical field of chain extenders, in particular to a polyepoxy chain extender and a preparation method and application thereof. The polyepoxy chain extender comprises a vinyl monomer-glycidyl methacrylate copolymer, wherein the glycidyl methacrylate accounts for 60-80 wt% of the copolymer. Promoting the dispersion of glycidyl methacrylate in the copolymerization process by reacting a vinyl monomer with appropriate components with glycidyl methacrylate to obtain a chain extender with high epoxy content; by the high content and good dispersibility of the epoxy group of the chain extender, the molecular weight and the processability of a high polymer can be improved under the condition of using less chain extender; by controlling the structure of the chain extender, the movement of the chain extender in a macromolecule can be adjusted by adding the alkyl methacrylate and the styrene, and the phenomena of gel and material accumulation in long-term use are avoided. By adjusting the molecular weight of the chain extender, the dispersion degree of the effective groups in the polymer is better, and the use effect is improved.
Description
Technical Field
The invention relates to the technical field of chain extenders, in particular to a polyepoxy chain extender and a preparation method and application thereof.
Background
Green and low carbon are the subject of development in the world today, biodegradable and easily recyclable being their main form. With the development of the plastic industry, more problems are faced. On one hand, the industrialization technology for synthesizing bio-based and biodegradable plastics such as polylactic acid (PLA), carbon dioxide propylene oxide copolymer (PPC), Polyhydroxyalkanoates (PHAs) and the like tends to be mature, the industrialization scale is rapidly improved, but the plastics have inherent defects of heat sensitivity, easy hydrolysis, poor melt strength, insufficient mechanical property and the like, and even can not be used independently; on the other hand, polycondensation engineering plastics such as polyester (PBT, PET), Polyamide (PA), Polycarbonate (PC) and the like are degraded in the processing process, so that molecular weight loss is caused, the melt strength and the processability of the polymer are affected, and as a result, reclaimed materials or reclaimed materials cannot be applied to occasions with higher performance requirements and even can be treated as waste.
The chain extender is one direction to improve the performance and processability of the polymer, and the chain extenders used so far mainly include epoxy functionalized polymer chain extenders, maleic anhydride functionalized polymer chain extenders, polyisocyanate chain extenders, oxazoline chain extenders and the like, and the development and application of the epoxy chain extenders are most remarkable.
Common epoxy chain extenders are copolymers of styrene and GMA, such as CN101157739, CN103755853A, CN102936307 and the like, which disclose chain extenders prepared by using styrene monomers and acrylate monomers as raw materials, but the proportion of the acrylate is generally below 50%, so that more chain extenders are required to be added to obtain good melt index and processability.
In the preparation process of the epoxy chain extender, the reactivity ratios of styrene and glyceryl acrylate are different, and when the glyceryl acrylate is more, epoxy groups in a molecular chain are too concentrated, so that the epoxy chain extender which is uniformly dispersed is difficult to generate. And the steric hindrance of the benzene ring is too large, and the epoxy group is difficult to react fully in subsequent application, so that the utilization rate of the chain extender is low, the use amount of the chain extender needs to be increased, and the screw machine head is easy to generate material accumulation and gel along with the increase of the use time of the chain extender in use. Leading to unstable discharge speed of the screw machine and even blockage.
Disclosure of Invention
In order to solve the problems, the invention provides a polyepoxy chain extender in a first aspect, wherein the polyepoxy chain extender comprises a vinyl monomer-glycidyl methacrylate copolymer, and the glycidyl methacrylate accounts for 60-80 wt% of the copolymer.
As a preferred embodiment of the present invention, the vinyl monomer comprises an aryl ethylene and/or an alkyl methacrylate,
the aryl ethylene is selected from one or more of styrene, styrene derivatives and naphthalene ethylene,
the alkyl methacrylate is C1-C6 alkyl methacrylate.
As a preferable technical scheme of the invention, the weight ratio of the aryl ethylene to the alkyl methacrylate is (0-6): (1-6).
In a preferred embodiment of the present invention, the weight ratio of the aryl ethylene to the alkyl methacrylate is (0 to 1): 4.
as a preferable technical scheme of the invention, the weight ratio of the aryl ethylene to the alkyl methacrylate is (4-6): 1.
in a preferred embodiment of the present invention, the weight average molecular weight of the vinyl monomer-glycidyl methacrylate copolymer is 3000 to 20000.
As a preferable technical scheme, the preparation raw materials of the polyepoxy chain extender comprise an active monomer, an initiator and a solvent, wherein the active monomer is a vinyl monomer and glycidyl methacrylate.
As a preferable technical scheme of the invention, the preparation raw material of the polyepoxy chain extender further comprises at least one of a dispersant, a chain transfer agent and an emulsifier.
The second aspect of the present invention provides a preparation method of the polyepoxy chain extender, comprising: and mixing the preparation raw materials of the polyepoxy chain extender, reacting at 60-100 ℃, and drying to obtain the polyepoxy chain extender.
The third aspect of the invention provides an application of the polyepoxy chain extender, which is used for polymer processing.
Compared with the prior art, the invention has the following beneficial effects:
(1) the vinyl monomer with proper components is used for reacting with the glycidyl methacrylate, so that the dispersion of the glycidyl methacrylate in the copolymerization process can be promoted, and the chain extender with high epoxy group content is obtained;
(2) by adding the chain extender in the polymer processing, more epoxy groups are promoted to participate in the chain extension reaction through the high content and good dispersibility of the epoxy groups of the chain extender, and the molecular weight and the processing performance of a polymer can be improved under the condition of using less chain extender;
(3) by controlling the structure of the chain extender and introducing a certain amount of alkyl methacrylate and styrene into the main chain, the movement of the chain extender in a polymer can be regulated, and the phenomena of gel and material accumulation in long-term use are avoided.
(4) By adjusting the molecular weight of the chain extender, the dispersion degree of the effective groups in the polymer is better, and the use effect is improved;
(5) by increasing the content of GMA (60-80%), the chain extender of unit mass has better chain extension effect.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.
In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.
The present invention is illustrated by the following specific embodiments, but is not limited to the specific examples given below.
In a first aspect of the present invention, there is provided a polyepoxy chain extender, the components of which comprise a vinyl monomer-glycidyl methacrylate copolymer.
Vinyl monomer-glycidyl methacrylate copolymer
In one embodiment, the glycidyl methacrylate of the present invention comprises 60 to 80wt% of the copolymer, which may be exemplified by 60 wt%, 62 wt%, 64 wt%, 66 wt%, 68 wt%, 70 wt%, 72 wt%, 74 wt%, 76 wt%, 78 wt%, 80 wt%.
In order to adapt to different polymer structures, the ratio of the aryl-containing monomer to the alkyl monomer can be adjusted. Preferably, the vinyl monomer of the present invention comprises aryl ethylene and/or alkyl methacrylate, preferably the vinyl monomer of the present invention is alkyl methacrylate or a mixture of aryl ethylene and alkyl methacrylate. More preferably, the weight ratio of the aryl ethylene to the alkyl methacrylate is (0-6): (1 to 6), there may be mentioned 0: 1. 1: 6. 1: 1. 2: 1. 3: 1. 4: 1. 5: 1. 6: 1.
applicants have found that to increase the flexibility of the chain extender, a relatively high amount of alkyl methacrylate chain extender can be used, with or without an aryl ethylene. Further preferably, the weight ratio of the aryl ethylene to the alkyl methacrylate is (0-1): 4, there may be mentioned, 0: 1. 1: 10. 1: 8. 1: 7. 1: 6. 1: 5. 1: 4.
when a chain extender with certain rigidity needs to be prepared, more aryl ethylene needs to be used as a vinyl monomer, but the reactivity ratio of more aryl ethylene and glycidyl methacrylate is different, so that the self-polymerization of the glycidyl methacrylate is increased, on one hand, epoxy groups are distributed densely and are shielded by the aryl ethylene, part of the epoxy groups are not easy to participate in the reaction during chain extension, on the other hand, the chain extender with high epoxy group content is difficult to prepare, and by adding a small amount of glycidyl methacrylate, the distribution of the epoxy groups and the aryl ethylene can be improved, the shielding phenomenon is reduced, so that the chain extender with high epoxy group is generated, and the epoxy groups are promoted to participate in the chain extension reaction. Still more preferably, the weight ratio of the aryl ethylene to the alkyl methacrylate is (4-6): 1, there may be mentioned, 4: 1. 4.2: 1. 4.4: 1. 4.6: 1. 4.8: 1. 5: 1. 5.2: 1. 5.4: 1. 5.6: 1. 5.8: 1. 6: 1.
the applicant finds that the structures of the aryl ethylene and the alkyl methacrylate play an important role in preparing the high epoxy group chain extender, the distribution of the epoxy groups in the chain extender and the increase of the epoxy groups participating in the chain extension reaction, and the proper selection of the alkyl methacrylate can also avoid the phenomena of gel and material accumulation during long-term use.
In a preferred embodiment, the aryl ethylene of the present invention is selected from one or more of styrene, styrene derivatives, and naphthalene ethylene, preferably styrene (St), and styrene derivatives obtained by substituting hydrogen on phenyl group of styrene with alkyl group, ether group, halogen, nitro group, etc., such as α -methyl styrene, vinyl toluene, p-methyl styrene, p-ethyl styrene, sodium styrene sulfonate, and chlorostyrene, etc.
In a more preferred embodiment, the alkyl methacrylate of the present invention is a C1-C6 alkyl methacrylate, such as Methyl Methacrylate (MMA), ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, Butyl Methacrylate (BMA), pentyl methacrylate, hexyl methacrylate; the alkyl methacrylate can be one alkyl methacrylate, or a mixture of two or more of the alkyl methacrylates, preferably a mixture of at least two alkyl methacrylates, such as a mixture of C1-C3 alkyl methacrylate and C4-C6 alkyl methacrylate, in a weight ratio of (3-5): 1, there may be mentioned, 3: 1. 3.2: 1. 3.4: 1. 3.6: 1. 3.8: 1. 4: 1. 4.2: 1. 4.4: 1. 4.6: 1. 4.8: 1. and 5. c.
The applicant finds that the molecular weight of the copolymer needs to be controlled, and particularly for a chain extender with high epoxy group content, when the chain extender is used for chain extension with a high polymer, the chain extender is taken as a crosslinking point, so that the higher crosslinking density than that of a common chain extender can be obtained, and if the molecular weight is too large or too small, the adjustment and the uniform distribution of the crosslinking density are not facilitated, so that the mechanical, processing, thermal and other properties of a processed high polymer finished product can be influenced. In a further preferred embodiment, the weight average molecular weight of the vinyl monomer-glycidyl methacrylate copolymer of the present invention is 3000 to 20000, and 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000, 11000, 12000, 13000, 14000, 15000, 16000, 17000, 18000, 19000, 20000 are exemplified.
In one embodiment, the polyepoxy chain extender of the present invention is prepared from raw materials including a reactive monomer, an initiator, and a solvent.
Reactive monomer
In one embodiment, the reactive monomers of the present invention are vinyl monomers and glycidyl methacrylate.
Initiator
The initiator of the present invention is not particularly limited, and azo compounds such as azobisisobutyronitrile, peroxy compounds such as cumene hydroperoxide, dicumyl peroxide, t-butyl peroxy-2-ethylhexanoate, t-butyl peroxybenzoate, 1-di-t-butylperoxy-2-methylcyclohexane, benzoyl peroxide, t-butyl peroxyisopropylcarbonate, t-butyl peroxy-2-ethylhexylbicarbonate and lauroyl peroxide can be exemplified. In one embodiment, the weight ratio of the catalyst to the active monomer is 0.1 to 5: 100, there may be mentioned 0.1: 100. 0.2: 100. 0.3: 100. 0.4: 100. 0.5: 100. 0.6: 100. 0.7: 100. 0.8: 100. 0.9: 100. 1: 100. 2: 100. 3: 100. 4: 100. 5: 100.
solvent(s)
According to the polymerization method of the present invention, different solvents can be selected, for example, an organic solvent such as methanol, acetone, tetrahydrofuran, toluene and the like can be selected for solution polymerization, and water can be selected as a solvent for emulsion polymerization or suspension polymerization. In one embodiment, the weight ratio of the solvent to the reactive monomer is (2-30): 1, there may be mentioned, 2: 1. 4: 1. 6: 1. 8: 1. 10: 1. 12: 1. 14: 1. 16: 1. 18: 1. 20: 1. 22: 1. 24: 1. 26: 1. 28: 1. 30, respectively.
In one embodiment, the preparation raw material of the polyepoxy chain extender of the present invention further comprises at least one of a dispersant and a chain transfer agent.
Chain transfer agent
In order to control the molecular weight of the vinyl monomer-glycidyl methacrylate copolymer, a chain transfer agent may be added, and the present invention is not particularly limited to chain transfer agents, which are well known in the art, and there may be mentioned, for example, alkyl mercaptans such as ethyl mercaptan, butyl mercaptan, hexyl mercaptan and dodecyl mercaptan; thiophenols, such as phenylmercaptan (phenylmethylmercaptan) and phenylmethylmercaptan; carboxyl group-containing thiols such as thioglycolic acid, 3-mercaptopropionic acid, and thiosalicylic acid; hydroxyl-containing thiols such as 2-mercaptoethanol and 3-mercapto-1, 2-propanediol; and thiols having a combination of two or more of the above functional groups, such as pentaerythritol tetrakis (3-mercapto) propionate. In one embodiment, the weight ratio of the chain transfer agent to the reactive monomer is (1-5): 100, there may be mentioned, 1: 100. 1.5: 100. 2: 100. 2.5: 100. 3: 100. 3.5: 100. 4: 100. 4.5: 100. 5: 100.
dispersing agent
When suspension polymerization is carried out, a dispersant is also added to promote dispersion of the monomers in the solvent. As examples of the dispersant, there may be mentioned water-soluble polymers such as polyvinyl alcohol, methyl cellulose, polyvinyl pyrrolidone, styrene maleic anhydride copolymer (SMA); inorganic salts such as lithium chloride, sodium chloride, magnesium chloride, potassium chloride, calcium chloride, ammonium chloride, sodium sulfate, magnesium sulfate, potassium sulfate, aluminum sulfate, ammonium sulfate, sodium nitrate, magnesium nitrate, potassium nitrate, calcium nitrate, sodium carbonate, magnesium carbonate, potassium carbonate, calcium carbonate, ammonium carbonate; inorganic bases such as sodium hydroxide, potassium hydroxide, ammonia, and the like. Preferably a mixture of water-soluble polymer, inorganic salt and inorganic base, in a weight ratio of 1: (0.5-1.5): (2 to 4), there may be mentioned, 1: 0.5: 2. 1: 0.8: 2.5, 1: 1: 3. 1: 1.2: 3.5, 1: 1.5: 4. in one embodiment, the weight ratio of the dispersant to the active monomer is (2-5): 100, there may be enumerated 2: 100. 2.5: 100. 3: 100. 3.5: 100. 4: 100. 4.5: 100. 5: 100.
in a second aspect, the present invention provides a method for preparing the polyepoxy chain extender, comprising: and mixing the preparation raw materials of the polyepoxy chain extender, reacting at 60-100 ℃, and drying to obtain the polyepoxy chain extender.
In one embodiment, the method of making the polyepoxy chain extender of the present invention comprises: mixing a solvent and a dispersing agent, heating to 60-100 ℃, preserving heat for 0.5-2 h, adding a mixture of an initiator, an active monomer and a chain transfer agent, reacting for 1-32 h, filtering, washing and drying to obtain the polyepoxy chain extender.
In a third aspect, the present invention provides the use of a polyepoxy chain extender as described above for the processing of macromolecules. The polymer of the present invention is not particularly limited, and examples thereof include polymers having functional groups capable of reacting with an epoxy group, such as an ester group, a hydroxyl group, and an amide group, and PLA, PPC, PHAs, PBT, PA, and PC.
Examples
The present invention will be specifically described below by way of examples. It should be noted that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention, and that the insubstantial modifications and adaptations of the present invention by those skilled in the art based on the above disclosure are still within the scope of the present invention.
TABLE 1 chain extender formulation
Embodiments 1 to 13 provide a polyepoxy chain extender, which is prepared from the following raw materials in parts by weight as shown in table 1, wherein the dispersant comprises calcium chloride: sodium hydroxide: SMA in a weight ratio of 0.5: 1.5; 0.5.
embodiments 1 to 11 also provide a method of preparing the polyepoxy chain extender, including: mixing a solvent and a dispersant, heating to 75 ℃, keeping the temperature for 1h, adding a mixture of an initiator, an active monomer and a chain transfer agent, reacting for 24h to obtain a beaded solid particle, filtering, washing and drying to obtain the polyepoxy chain extender.
Example 12 also provides a method of making the polyepoxy chain extender described above, comprising: mixing a solvent and a dispersant, heating to 75 ℃, keeping the temperature for 1h, adding a mixture of an initiator, an active monomer and a chain transfer agent, reacting for 15h to obtain a bead-shaped solid particle, filtering, washing and drying to obtain the polyepoxy chain extender.
Embodiment 13 also provides a method of making the polyepoxy chain extender described above, comprising: mixing a solvent and a dispersant, heating to 75 ℃, keeping the temperature for 1h, adding a mixture of an initiator, an active monomer and a chain transfer agent, reacting for 13.5h to obtain a beaded solid particle, filtering, washing and drying to obtain the polyepoxy chain extender.
Evaluation of Performance
The polyepoxy chain extender provided in examples 1 to 13 was used as an experimental group, a commercially available KL-E4370 was used as a control group, PET and PLA were used as macromolecules for processing, and effects of the composition, molecular weight, and the like of the copolymer of the polyepoxy chain extender having a high benzene ring content and a low benzene ring content on the processability, melt index, mechanical properties, and the like of the macromolecules were tested.
1. Influence of copolymer composition of polyepoxy chain extender with high benzene ring content on polymer performance
1.1 melt index test:
the polyepoxy chain extender provided in examples 1 to 7 and KL-E4370 were mixed with PLA, respectively, and then the addition was 0.3%. Granulating by a double-screw extruder (the screw temperature is 190 ℃ and 220 ℃, and the rotating speed of the screw extruder is 40 r/min). And (4) testing the fused finger after the particles are dried.
The melt index test conditions are GB-T3682-2000, 190 ℃, 2.16Kg, and the PLA basic melt index is 30g/10min, and the results are shown in Table 2.
TABLE 2
From the test results of the examples 1-7 and the comparison group, compared with the commercially available epoxy chain extender, the chain extender provided by the invention has a better chain extension effect when the addition amount is less.
1.2 processability test:
whether the extrusion speed is uniform within 2 hours of continuous operation of the twin-screw extruder and whether the phenomena of material accumulation and gelation exist is observed, and the results are shown in Table 3.
TABLE 3
As shown in table 3, compared with the commercially available epoxy chain extender, the chain extender provided by the present invention has higher epoxy groups, but can avoid the generation of gel and material accumulation, and improve the processability.
2. Influence of molecular weight of polyepoxy chain extender with high benzene ring content on high molecular performance
2.1 molecular weight measurement
The polyepoxy chain extenders provided in examples 3, 8, 9 were tested for molecular weight by GPC and the results are shown in table 4.
TABLE 4
| Example 1 | Mn | Mw | D |
| Example 3 | 7396 | 16122 | 2.18 |
| Example 8 | 62468 | 188533 | 3.02 |
| Example 9 | 3592 | 6897 | 1.92 |
2.2 melt index
The polyepoxy chain extender provided in examples 3, 8 and 9 was mixed with PLA, respectively, and added in an amount of 0.3%. Granulating by a double-screw extruder (the screw temperature is 190 ℃ and 220 ℃, and the rotating speed of the screw extruder is 40 r/min). And (4) testing the fused finger after the particles are dried.
The melt index test conditions are GB-T3682-2000, 190 ℃, 2.16Kg, and the PLA basic melt index is 30g/10min, and the results are shown in Table 5.
TABLE 5
| Examples | Melt index |
| Example 3 | 17.3g/10min |
| Example 8 | 26.7g/10min |
| Example 9 | 15.5g/10min |
As can be seen from tables 4 and 5, when a chain extender of an appropriate molecular weight is used, good chain extension effect and processability are advantageously obtained.
3. Influence of epoxy group content of polyepoxy chain extender with high benzene ring content on polymer performance
3.1 melt index test
The polyepoxy chain extender provided in examples 3, 10 and 11 was mixed with PLA, respectively, and added in an amount of 0.3%. Granulating by a double-screw extruder (the screw temperature is 190 ℃ and 220 ℃, and the rotating speed of the screw extruder is 40 r/min). And (4) testing the fused finger after the particles are dried.
The melt index test conditions are GB-T3682-2000, 190 ℃, 2.16Kg, and the PLA basic melt index is 30g/10min, and the results are shown in Table 6.
TABLE 6
3.2 processability test
In the embodiment 10, when the screw extruder is used for extrusion, a gel phenomenon occurs, extruded sample strips are uneven in thickness and extremely high in viscosity, and when the melt index is measured after crushing, a sample cannot be extruded from a small hole by the load of a melt index meter, which shows that gel is easily generated in practical application when the epoxy group content is too high, and when the epoxy group content is less, the chain extension effect is not obvious in application.
4. Influence of epoxy group content of low benzene ring content polyepoxy chain extender on polymer performance
4.1 melt index test
The polyepoxy chain extender provided in examples 12 and 13 and KL-E4370 were mixed with PET, and added in amounts of 0%, 0.2%, and 0.3%, respectively. Granulating by a double-screw extruder (the screw temperature is 190 ℃ and 220 ℃, and the rotating speed of the screw extruder is 40 r/min). And (4) testing the fused finger after the particles are dried.
The melt index test conditions are GB-T3682-2000, 190 ℃ and 2.16Kg, and the results are shown in Table 7.
TABLE 7
| Chain extender usage | 0％ | 0.2％ | 0.3％ |
| Example 12 | 45g/10min | 33g/10min | 21g/10min |
| Example 13 | 43g/10min | 36g/10min | 23g/10min |
| KL-E4370 | - | - | 35g/10min |
4.2 processability test
Whether the extrusion speed is uniform within 2 hours of continuous operation of the twin-screw extruder and whether the phenomena of material accumulation and gelation exist is observed, and the results are shown in Table 8.
TABLE 8
As is clear from the results in tables 2 to 8, the melt index, mechanical properties and processability of the polymer can be improved when a small amount of the copolymer having 60 to 80wt% of glycidyl methacrylate is added as a chain extender.
The foregoing examples are merely illustrative and serve to explain some of the features of the method of the present invention. The appended claims are intended to claim as broad a scope as is contemplated, and the examples presented herein are merely illustrative of selected implementations in accordance with all possible combinations of examples. Accordingly, it is applicants' intention that the appended claims are not to be limited by the choice of examples illustrating features of the invention. Also, where numerical ranges are used in the claims, subranges therein are included, and variations in these ranges are also to be construed as possible being covered by the appended claims.
Claims (4)
1. The polyepoxy chain extender is characterized in that the polyepoxy chain extender comprises a vinyl monomer-glycidyl methacrylate copolymer, wherein the glycidyl methacrylate accounts for 70-80 wt% of the copolymer;
the vinyl monomer is styrene and alkyl methacrylate;
the weight ratio of the styrene to the alkyl methacrylate is (4-6): 1, the alkyl methacrylate is methyl methacrylate and n-butyl methacrylate, and the weight ratio is (3-5): 1;
or the weight ratio of the styrene to the alkyl methacrylate is 0 to (1: 6); the alkyl methacrylate is methyl methacrylate, or the weight ratio of the alkyl methacrylate to the methyl methacrylate is 2: 1 methyl methacrylate and n-butyl methacrylate;
the chain extender is used for PLA and/or PBT; the weight average molecular weight of the vinyl monomer-glycidyl methacrylate copolymer is 3000-20000.
2. The polyepoxy chain extender of claim 1, wherein the polyepoxy chain extender is prepared from raw materials comprising reactive monomers, an initiator and a solvent, wherein the reactive monomers are vinyl monomers and glycidyl methacrylate.
3. The polyepoxy chain extender of claim 2, wherein the raw materials for preparing the polyepoxy chain extender further comprise at least one of a dispersant, a chain transfer agent, and an emulsifier.
4. A method of preparing the polyepoxy chain extender of claim 2 or 3, comprising: and mixing the preparation raw materials of the polyepoxy chain extender, reacting at 60-100 ℃, and drying to obtain the polyepoxy chain extender.
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| CN113943397A (en) * | 2021-10-26 | 2022-01-18 | 福建师范大学 | Polyepoxy chain extender with narrowly distributed molecular weight, and preparation method and application thereof |
| CN115490803B (en) * | 2021-11-29 | 2024-01-16 | 上海涵点科技有限公司 | Preparation process and application of degradable chain extender with good compatibility |
| CN115466350A (en) * | 2021-11-29 | 2022-12-13 | 上海涵点科技有限公司 | Reactive chain extender with high-activity groups and application thereof |
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| WO2012103208A2 (en) * | 2011-01-28 | 2012-08-02 | Anderson Development Company | Compositions of glycidyl methacrylate copolymer suitable as chain extender for poly(lactic acid) |
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| CN102936307A (en) * | 2012-11-27 | 2013-02-20 | 山西省化工研究所 | Epoxy functionalized chain extender, and preparation method and application thereof |
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