CN114426753B - 乙烯-乙烯醇共聚物组合物及其制备方法 - Google Patents
乙烯-乙烯醇共聚物组合物及其制备方法 Download PDFInfo
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- CN114426753B CN114426753B CN202011103188.4A CN202011103188A CN114426753B CN 114426753 B CN114426753 B CN 114426753B CN 202011103188 A CN202011103188 A CN 202011103188A CN 114426753 B CN114426753 B CN 114426753B
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- ethylene
- vinyl alcohol
- alcohol copolymer
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- 229920000219 Ethylene vinyl alcohol Polymers 0.000 title claims abstract description 99
- 239000000203 mixture Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 54
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims abstract description 23
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims abstract description 21
- 159000000000 sodium salts Chemical class 0.000 claims abstract description 11
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 7
- 150000001735 carboxylic acids Chemical class 0.000 claims abstract 9
- 239000004715 ethylene vinyl alcohol Substances 0.000 claims description 36
- 238000006136 alcoholysis reaction Methods 0.000 claims description 28
- 238000005406 washing Methods 0.000 claims description 23
- 229910001415 sodium ion Inorganic materials 0.000 claims description 19
- 229910001414 potassium ion Inorganic materials 0.000 claims description 16
- 238000006116 polymerization reaction Methods 0.000 claims description 14
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 12
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 12
- PVEOYINWKBTPIZ-UHFFFAOYSA-N but-3-enoic acid Chemical compound OC(=O)CC=C PVEOYINWKBTPIZ-UHFFFAOYSA-N 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 5
- NIONDZDPPYHYKY-SNAWJCMRSA-N (2E)-hexenoic acid Chemical compound CCC\C=C\C(O)=O NIONDZDPPYHYKY-SNAWJCMRSA-N 0.000 claims description 4
- 239000001602 (E)-hex-3-enoic acid Substances 0.000 claims description 4
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 claims description 4
- VBWPSWWDYVWZKA-UHFFFAOYSA-N 2-hydroxybut-3-enoic acid Chemical compound C=CC(O)C(O)=O VBWPSWWDYVWZKA-UHFFFAOYSA-N 0.000 claims description 4
- GJIIAJVOYIPUPY-UHFFFAOYSA-N 2-methylidenebut-3-enoic acid Chemical compound OC(=O)C(=C)C=C GJIIAJVOYIPUPY-UHFFFAOYSA-N 0.000 claims description 4
- XXHDAWYDNSXJQM-UHFFFAOYSA-N Chloride-3-Hexenoic acid Natural products CCC=CCC(O)=O XXHDAWYDNSXJQM-UHFFFAOYSA-N 0.000 claims description 4
- WBYWAXJHAXSJNI-SREVYHEPSA-N Cinnamic acid Chemical compound OC(=O)\C=C/C1=CC=CC=C1 WBYWAXJHAXSJNI-SREVYHEPSA-N 0.000 claims description 4
- NIONDZDPPYHYKY-UHFFFAOYSA-N Z-hexenoic acid Natural products CCCC=CC(O)=O NIONDZDPPYHYKY-UHFFFAOYSA-N 0.000 claims description 4
- 229930016911 cinnamic acid Natural products 0.000 claims description 4
- 235000013985 cinnamic acid Nutrition 0.000 claims description 4
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 claims description 4
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 claims description 4
- 239000004334 sorbic acid Substances 0.000 claims description 4
- 229940075582 sorbic acid Drugs 0.000 claims description 4
- 235000010199 sorbic acid Nutrition 0.000 claims description 4
- XXHDAWYDNSXJQM-ONEGZZNKSA-N trans-hex-3-enoic acid Chemical compound CC\C=C\CC(O)=O XXHDAWYDNSXJQM-ONEGZZNKSA-N 0.000 claims description 4
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 claims description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 2
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- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 claims 2
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- 239000003513 alkali Substances 0.000 claims 1
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- 238000004383 yellowing Methods 0.000 abstract description 3
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- 239000000243 solution Substances 0.000 description 15
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- 229920005989 resin Polymers 0.000 description 13
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- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 11
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- 239000003999 initiator Substances 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 8
- 239000005977 Ethylene Substances 0.000 description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 6
- 239000011342 resin composition Substances 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 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 5
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical group OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 5
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 235000015497 potassium bicarbonate Nutrition 0.000 description 4
- 239000011736 potassium bicarbonate Substances 0.000 description 4
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 4
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 3
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- 235000011181 potassium carbonates Nutrition 0.000 description 3
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 3
- GRONZTPUWOOUFQ-UHFFFAOYSA-M sodium;methanol;hydroxide Chemical compound [OH-].[Na+].OC GRONZTPUWOOUFQ-UHFFFAOYSA-M 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
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- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- NOBYOEQUFMGXBP-UHFFFAOYSA-N (4-tert-butylcyclohexyl) (4-tert-butylcyclohexyl)oxycarbonyloxy carbonate Chemical compound C1CC(C(C)(C)C)CCC1OC(=O)OOC(=O)OC1CCC(C(C)(C)C)CC1 NOBYOEQUFMGXBP-UHFFFAOYSA-N 0.000 description 1
- MTLWTRLYHAQCAM-UHFFFAOYSA-N 2-[(1-cyano-2-methylpropyl)diazenyl]-3-methylbutanenitrile Chemical compound CC(C)C(C#N)N=NC(C#N)C(C)C MTLWTRLYHAQCAM-UHFFFAOYSA-N 0.000 description 1
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 1
- RAWISQFSQWIXCW-UHFFFAOYSA-N 2-methylbutan-2-yl 2,2-dimethyloctaneperoxoate Chemical compound CCCCCCC(C)(C)C(=O)OOC(C)(C)CC RAWISQFSQWIXCW-UHFFFAOYSA-N 0.000 description 1
- AQKYLAIZOGOPAW-UHFFFAOYSA-N 2-methylbutan-2-yl 2,2-dimethylpropaneperoxoate Chemical compound CCC(C)(C)OOC(=O)C(C)(C)C AQKYLAIZOGOPAW-UHFFFAOYSA-N 0.000 description 1
- RPBWMJBZQXCSFW-UHFFFAOYSA-N 2-methylpropanoyl 2-methylpropaneperoxoate Chemical compound CC(C)C(=O)OOC(=O)C(C)C RPBWMJBZQXCSFW-UHFFFAOYSA-N 0.000 description 1
- XYFRHHAYSXIKGH-UHFFFAOYSA-N 3-(5-methoxy-2-methoxycarbonyl-1h-indol-3-yl)prop-2-enoic acid Chemical compound C1=C(OC)C=C2C(C=CC(O)=O)=C(C(=O)OC)NC2=C1 XYFRHHAYSXIKGH-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- KYIKRXIYLAGAKQ-UHFFFAOYSA-N abcn Chemical compound C1CCCCC1(C#N)N=NC1(C#N)CCCCC1 KYIKRXIYLAGAKQ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium peroxydisulfate Substances [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 1
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- ZGPBOPXFOJBLIV-UHFFFAOYSA-N butoxycarbonyloxy butyl carbonate Chemical compound CCCCOC(=O)OOC(=O)OCCCC ZGPBOPXFOJBLIV-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 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
- ZQMHJBXHRFJKOT-UHFFFAOYSA-N methyl 2-[(1-methoxy-2-methyl-1-oxopropan-2-yl)diazenyl]-2-methylpropanoate Chemical compound COC(=O)C(C)(C)N=NC(C)(C)C(=O)OC ZQMHJBXHRFJKOT-UHFFFAOYSA-N 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 125000000864 peroxy group Chemical group O(O*)* 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/02—Organic and inorganic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
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- 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
- C08F216/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
- C08F216/02—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an alcohol radical
- C08F216/04—Acyclic compounds
- C08F216/06—Polyvinyl alcohol ; Vinyl alcohol
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
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- 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
- C08F8/00—Chemical modification by after-treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08F218/04—Vinyl esters
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
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- C08J2323/08—Copolymers of ethene
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- C—CHEMISTRY; METALLURGY
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2003/329—Phosphorus containing acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
- C08L23/0861—Saponified vinylacetate
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- Chemical & Material Sciences (AREA)
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Abstract
本发明属于含有4个碳原子的单体的只有一个碳碳双键的共聚物技术领域,具体涉及乙烯‑乙烯醇共聚物组合物。所述组合物包括乙烯‑乙烯醇共聚物、含羧基的物质、钾盐和钠盐,所述含羧基的物质包括醋酸和含碳碳双键的羧酸。本发明的组合物能够进一步提高乙烯‑乙烯醇共聚物的耐热性能,能够进一步改善乙烯‑乙烯醇共聚物的耐热黄变性能。
Description
技术领域
本发明属于含有4个碳原子的单体的只有一个碳碳双键的共聚物技术领域,具体涉及乙烯-乙烯醇共聚物组合物及其制备方法。
背景技术
乙烯-乙烯醇共聚物(EVOH)是一种链状结构的结晶性聚合物,由乙烯基链段和乙烯醇基链段构成(“EVOH的性能及制备要点”,李娟娟,印刷技术,2011年第2期,第46页左栏第1段第1-4行,公开日2011年4月29日)。
乙烯-乙烯醇共聚物在应用中通常采用熔融加工方式进行生产。然而,乙烯-乙烯醇共聚物的耐热性能不佳:常规乙烯-乙烯醇共聚物的热分解起始温度为300℃左右,加工过程中的长周期运行稳定性和故障停机处理后的高温熔融均受分解温度的影响,易造成产品高温黄变,并产生热分解产物,影响产品质量。
为解决以上问题,公开号为CN105623163A的专利文献公开了一种含乙烯及乙烯醇结构单元共聚物组合物,其包括组分A(含乙烯及乙烯醇结构单元的共聚物)、组分B(酸,选自无机酸或有机羧酸中的一种或其混合物,有机羧酸选自碳数为2-20的多元羧酸)、组分C(有机酚类或胺类化合物)和组分D(碱金属或碱土金属盐),其中,B组分和D组分的质量含量为0.1%-4.0%,C组分的质量含量为0.01%-1.8%,均以A组分质量为100%计。该方案提高了含乙烯及乙烯醇结构单元的共聚物的热稳定性,其组合物在氮气和空气气氛下初始分解温度(T0)分别为211-291℃和236-243℃,最大分解温度(Td)分别为275-377℃和311-315℃。然而,该方案对于含乙烯及乙烯醇结构单元的共聚物的热稳定性的提高程度有限,无法适应更高加工温度的工艺需要。
发明内容
有鉴于此,本发明的目的在于提供一种乙烯-乙烯醇共聚物组合物。
除特别说明外,本发明所述份数为质量份。
为实现上述目的,本发明的技术方案为:
乙烯-乙烯醇共聚物组合物,包括乙烯-乙烯醇共聚物、含羧基的物质、钾盐和钠盐,所述含羧基的物质包括醋酸和含碳碳双键的羧酸。
进一步,所述含碳碳双键的羧酸采用含有一个或两个羧基的化合物。
进一步,所述含碳碳双键的羧酸包括山梨酸、2-己烯酸、3-己烯酸、丁烯二酸、乙烯基乙酸、乙烯基丙烯酸、乙烯基乙醇酸和肉桂酸中的一种或多种。
进一步,所述醋酸的含量为相对于乙烯-乙烯醇共聚物质量的50-2000ppm,所述含碳碳双键的羧酸的含量为相对于乙烯-乙烯醇共聚物质量的20-2000ppm。
进一步,所述钾盐包括碳酸钾、碳酸氢钾、磷酸钾、磷酸二氢钾或磷酸氢二钾。
进一步,钾盐和钠盐的总量为钾盐和钠盐中含有的钾离子和钠离子的总量相对于乙烯-乙烯醇共聚物质量的200-3000ppm,且钠盐中含有的钠离子与钾盐中含有的钾离子的质量比为0.1:1-1:1。
进一步,所述乙烯-乙烯醇共聚物组合物,包括乙烯-乙烯醇共聚物、醋酸、含羧基的物质、钾盐和钠盐,所述含羧基的物质包括山梨酸、2-己烯酸、3-己烯酸、丁烯二酸、乙烯基乙酸、乙烯基丙烯酸、乙烯基乙醇酸和肉桂酸中的一种或多种,所述醋酸的含量为相对于乙烯-乙烯醇共聚物质量的50-2000ppm,所述含碳碳双键的羧酸的含量为相对于乙烯-乙烯醇共聚物质量的20-2000ppm,钾盐和钠盐的总量为钾盐和钠盐中含有的钾离子和钠离子的总量相对于乙烯-乙烯醇共聚物质量的200-3000ppm,且钠盐中含有的钠离子与钾盐中含有的钾离子的质量比为0.1:1-1:1。
本发明的目的还在于保护所述组合物的制备方法,包括以下步骤:
将聚合得到的乙烯-醋酸乙烯酯共聚物用氢氧化钠醇解后成型造粒,然后进行清洗,清洗过程中添加醋酸和含碳碳双键的羧酸进行洗涤,再加入钾盐。
进一步,所述聚合采用溶液聚合、乳液聚合或悬浮聚合等方法。
进一步,所述聚合采用溶液聚合。
进一步,聚合反应采用的溶剂包括醇类溶剂。
进一步,所述醇类溶剂包括碳原子数1-4的醇类,如甲醇、乙醇、丙醇、乙二醇、正丁醇和叔丁醇等,也可以是上述两种醇类的混合溶剂,或者以上述醇类作为主要成份而含有其他少量成份。
进一步,聚合所采用的引发剂包括偶氮类引发剂或过氧化物类引发剂。
进一步,偶氮类引发剂包括油溶性引发剂如偶氮二异丁腈、偶氮二异戊腈、偶氮异丁氰基甲酰胺、偶氮二环已基甲腈、偶氮二异丁酸二甲酯等。
进一步,过氧化物类引发剂包括有机过氧化物(如过氧化苯甲酰、过氧化苯甲酰叔丁酯、过氧化甲乙酮、过氧化二异丁酰、过氧化新癸酸特戊酯、过氧化二碳酸双(4-特丁基环己酯)、过氧化特戊酸特戊酯、过氧化醋酸特丁酯、过氧化二碳酸双丁酯等)或无机过氧化物(如过氧化氢、过硫酸铵、过硫酸钾等)。
进一步,所述引发剂包括有机过氧类引发剂。
进一步,以质量份计,配比关系为:溶剂10-40份,醋酸乙烯酯单体60-100份、引发剂0.005-0.3份和乙烯单体5-60份。
进一步,以质量份计,配比关系为:溶剂10-35份,醋酸乙烯酯单体65-90份、引发剂0.008-0.2份和乙烯单体20-40份。
本发明中,所述醇解可采用任意一种方法。
进一步,所述含碳碳双键的羧酸含有一个或两个羧基。
进一步,所述含碳碳双键的羧酸包括山梨酸、2-己烯酸、3-己烯酸、丁烯二酸、乙烯基乙酸、乙烯基丙烯酸、乙烯基乙醇酸和肉桂酸中的一种或多种。
进一步,所述含碳碳双键的羧酸的含量为相对于乙烯-乙烯醇共聚物质量的20-2000ppm。
进一步,清洗过程中添加醋酸和含碳碳双键的羧酸进行洗涤,使乙烯-乙烯醇共聚物中钠离子含量相对于EVOH降低至200-2000ppm,再加入钾盐,控制钠离子与钾盐中含有的钾离子的总量相对于乙烯-乙烯醇共聚物质量的200-2000ppm且钠离子与钾盐中含有的钾离子的质量比为0.1:1-1:1。
本发明的有益效果在于:
本发明的组合物能够进一步提高乙烯-乙烯醇共聚物的耐热性能,起始分解温度可提高至350-370℃,最大分解温度看提高至400-420℃,使乙烯-乙烯醇共聚物能够适应更高加工温度的工艺需要。
本发明的组合物能够进一步改善乙烯-乙烯醇共聚物的耐热黄变性能。
本发明的方法简单,易于操作,有利于实现工业化生产。
具体实施方式
所举实施例是为了更好地对本发明的内容进行说明,但并不是本发明的内容仅限于所举实施例。所以熟悉本领域的技术人员根据上述发明内容对实施方案进行非本质的改进和调整,仍属于本发明的保护范围。
以下初始分解温度的检测方法为:氮气氛围下,升温速率10℃/min,温度从室温升至800℃,当样品分解5%(w)时的温度即为初始分解温度。
以下最高分解温度的检测方法为:氮气氛围下,升温速率10℃/min,温度从室温升至800℃,当样品分解50%(w)时的温度即为最大分解温度。
以下黄度指数YI的检测方法为:称取10-15g样品,用色度仪测试样品黄度指数YI。YI值越小代表着色度越低。
实施例1
乙烯-乙烯醇共聚物组合物,具体经以下步骤制备而得:
A.聚合:
在带有搅拌器的聚合釜中加入甲醇16份、醋酸乙烯酯80份、偶氮二异丁腈0.01份,通入乙烯使聚合釜内压力保持在3.7MPa,温度65℃,反应5h,得到乙烯-醋酸乙烯共聚物溶液,经减压和精馏除去乙烯和醋酸乙烯单体,得到乙烯-醋酸乙烯共聚物溶液;
B.醇解:将步骤A得到的乙烯-醋酸乙烯共聚物溶液调整质量分数为25%,然后加入浓度为40g/L的氢氧化钠-甲醇溶液(氢氧化钠为溶质)进行醇解,氢氧化钠-甲醇溶液的用量为氢氧化钠-甲醇溶液中的氢氧化钠与乙烯-醋酸乙烯酯共聚物中含有的醋酸乙烯酯基团的摩尔比为0.05:1,反应4h直至醇解完全;
C.组合物制备:将乙烯-醋酸乙烯酯共聚物醇解后,将醇解得到的乙烯-乙烯醇共聚物溶液通过带有孔板的挤出设备挤出到5℃的水溶液中,析出成条状后,采用通用的切断方式切割成颗粒;
随后通过带有搅拌装置的釜式容器加入颗粒5倍质量的水清洗乙烯-乙烯醇共聚物颗粒,每次洗涤2小时,反复洗涤2次;
然后进行第三次洗涤,在第三次洗涤过程中加入相对于EVOH(以质量为1份计)质量0.0008份的醋酸和0.0005份的乙烯基乙酸进行洗涤,使树脂中由于醇解副产物产生的钠离子含量相对于EVOH降低至1000ppm;
再添加碳酸钾,使EVOH树脂中含有1200ppm(相对于EVOH)的钾离子,接着在115℃下烘干处理24小时,即得EVOH树脂组合物。
检测得到的组合物的初始分解温度、最高分解温度及经150℃热处理5小时前后的黄度指数YI。
经检测,本实施例的组合物的初始分解温度为362℃,最高分解温度为403℃,经150℃热处理5小时前后,产品黄度指数YI分别为9和11。
实施例2
乙烯-乙烯醇共聚物组合物,具体经以下步骤制备而得:
A.聚合工序与实施例1的聚合工序相同;
B.醇解工序与实施例1的醇解工序相同;
C.组合物制备:将乙烯-醋酸乙烯酯共聚物醇解后,将醇解得到的乙烯-乙烯醇共聚物溶液通过带有孔板的挤出设备挤出到5℃的水溶液中,析出成条状后,采用通用的切断方式切割成颗粒;
随后通过带有搅拌装置的釜式容器加入颗粒5倍质量的水清洗乙烯-乙烯醇共聚物颗粒,每次洗涤2小时,反复洗涤2次;
然后进行第三次洗涤,在第三次洗涤过程中加入相对于EVOH(以质量为1份计)质量0.0003份醋酸和0.0001份的乙烯基乙酸进行洗涤,使树脂中由于醇解副产物产生的钠离子含量相对于EVOH降低至1400ppm;
再添加碳酸氢钾,使EVOH树脂中含有1500ppm(相对于EVOH)的钾离子,接着在115℃下烘干处理24小时,即得EVOH树脂组合物。
检测得到的组合物的初始分解温度、最高分解温度及经150℃热处理5小时前后的黄度指数YI。
经检测,本实施例的组合物的初始分解温度为350℃,最高分解温度为390℃,经150℃热处理5小时前后,产品黄度指数YI分别为12和16。
实施例3
乙烯-乙烯醇共聚物组合物,具体经以下步骤制备而得:
A.聚合工序与实施例1的聚合工序相同;
B.醇解工序与实施例1的醇解工序相同;
C.组合物制备:将乙烯-醋酸乙烯酯共聚物醇解后,将醇解得到的乙烯-乙烯醇共聚物溶液通过带有孔板的挤出设备挤出到5℃的水溶液中,析出成条状后,采用通用的切断方式切割成颗粒;
随后通过带有搅拌装置的釜式容器加入颗粒5倍质量的水清洗乙烯-乙烯醇共聚物颗粒,每次洗涤2小时,反复洗涤2次;
然后进行第三次洗涤,在第三次洗涤过程中加入相对于EVOH(以质量为1份计)质量0.001份的醋酸和0.001份的乙烯基乙酸进行洗涤,使树脂中由于醇解副产物产生的钠离子含量相对于EVOH降低至800ppm;
再添加磷酸二氢钾,使EVOH树脂中含有1400ppm(相对于EVOH)的钾离子,接着在115℃下烘干处理24小时,即得EVOH树脂组合物。
检测得到的组合物的初始分解温度、最高分解温度及经150℃热处理5小时前后的黄度指数YI。
经检测,本实施例的组合物的初始分解温度为370℃,最高分解温度为423℃,经150℃热处理5小时前后,产品黄度指数YI分别为7和9。
对比例1
乙烯-乙烯醇共聚物组合物,具体经以下步骤制备而得:
A.聚合工序与实施例1的聚合工序相同;
B.醇解工序与实施例1的醇解工序相同;
C.组合物制备:将乙烯-醋酸乙烯酯共聚物醇解后,将醇解得到的乙烯-乙烯醇共聚物溶液通过带有孔板的挤出设备挤出到5℃的水溶液中,析出成条状后,采用通用的切断方式切割成颗粒;
随后通过带有搅拌装置的釜式容器加入颗粒5倍质量的水清洗乙烯-乙烯醇共聚物颗粒,每次洗涤2小时,反复洗涤2次;
然后进行第三次洗涤,在第三次洗涤过程中加入相对于EVOH(以质量为1份计)质量0.0001份的乙酸进行洗涤,使树脂中由于醇解副产物产生的钠离子含量相对于EVOH降低至3500ppm;
再添加碳酸钾,使EVOH树脂中含有2000ppm(相对于EVOH)的钾离子,接着在115℃下烘干处理24小时,即得EVOH树脂组合物。
检测得到的组合物的初始分解温度、最高分解温度及经150℃热处理5小时前后的黄度指数YI。
经检测,本实施例的组合物的初始分解温度为290℃,最高分解温度为364℃,经150℃热处理5小时前后,产品黄度指数YI分别为18和25。
对比例2
乙烯-乙烯醇共聚物组合物,具体经以下步骤制备而得:
A.聚合工序与实施例1的聚合工序相同;
B.醇解工序与实施例1的醇解工序相同;
C.组合物制备:将乙烯-醋酸乙烯酯共聚物醇解后,将醇解得到的乙烯-乙烯醇共聚物溶液通过带有孔板的挤出设备挤出到5℃的水溶液中,析出成条状后,采用通用的切断方式切割成颗粒;
随后通过带有搅拌装置的釜式容器加入颗粒5倍质量的水清洗乙烯-乙烯醇共聚物颗粒,每次洗涤2小时,反复洗涤2次;
然后进行第三次洗涤,在第三次洗涤过程中加入相对于EVOH(以质量为1份计)质量0.0001份的乙烯基乙酸进行洗涤,使树脂中由于醇解副产物产生的钠离子含量相对于EVOH降低至1500ppm;
再添加碳酸氢钾,使EVOH树脂中含有200ppm(相对于EVOH)的钾离子,接着在115℃下烘干处理24小时,即得EVOH树脂组合物。
检测得到的组合物的初始分解温度、最高分解温度及经150℃热处理5小时前后的黄度指数YI。
经检测,本实施例的组合物的初始分解温度为301℃,最高分解温度为370℃,经150℃热处理5小时前后,产品黄度指数YI分别为15和25。
对比例3
乙烯-乙烯醇共聚物组合物,具体经以下步骤制备而得:
A.聚合工序与实施例1的聚合工序相同;
B.醇解工序与实施例1的醇解工序相同;
C.组合物制备:将乙烯-醋酸乙烯酯共聚物醇解后,将醇解得到的乙烯-乙烯醇共聚物溶液通过带有孔板的挤出设备挤出到5℃的水溶液中,析出成条状后,采用通用的切断方式切割成颗粒;
随后通过带有搅拌装置的釜式容器加入颗粒5倍质量的水清洗乙烯-乙烯醇共聚物颗粒,每次洗涤2小时,反复洗涤2次;
然后进行第三次洗涤,在C步骤的第三次洗涤过程中加入相对于EVOH(以质量为1份计)质量0.00015份的乙酸进行洗涤,使树脂中由于醇解副产物产生的钠离子含量相对于EVOH降低至3000ppm;
再添加碳酸氢钾,使EVOH树脂中含有2000ppm(相对于EVOH)的钾离子,接着在115℃下烘干处理24小时,即得EVOH树脂组合物。
检测得到的组合物的初始分解温度、最高分解温度及经150℃的热处理5小时前后的黄度指数YI。
经检测,本实施例的组合物的初始分解温度为297℃,最高分解温度为358℃,经150℃热处理5小时前后,产品黄度指数YI分别为17和26。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。
Claims (6)
1.乙烯-乙烯醇共聚物组合物,包括乙烯-乙烯醇共聚物、含羧基的物质、钾盐和钠盐,其特征在于,所述含羧基的物质包括醋酸和含碳碳双键的羧酸;所述含碳碳双键的羧酸包括山梨酸、2-己烯酸、3-己烯酸、乙烯基乙酸、乙烯基丙烯酸、乙烯基乙醇酸和肉桂酸中的一种或多种,所述醋酸的含量为相对于乙烯-乙烯醇共聚物质量的50-2000ppm;所述含碳碳双键的羧酸的含量为相对于乙烯-乙烯醇共聚物质量的20-2000ppm,钾盐和钠盐的总量为钾盐和钠盐中含有的钾离子和钠离子的总量相对于乙烯-乙烯醇共聚物质量的200-3000ppm,且钠盐中含有的钠离子与钾盐中含有的钾离子的质量比为0.1:1-1:1。
2.权利要求1所述组合物的制备方法,其特征在于,包括以下步骤:
将聚合得到的乙烯-醋酸乙烯酯共聚物用碱催化剂醇解后成型造粒,然后进行清洗,清洗过程中添加醋酸和含碳碳双键的羧酸进行洗涤,再加入钾盐。
3.根据权利要求2所述的制备方法,其特征在于,所述含碳碳双键的羧酸采用含有一个或两个羧基的化合物。
4.根据权利要求2或3所述的制备方法,其特征在于,所述醋酸的含量为相对于乙烯-乙烯醇共聚物质量的50-2000ppm,所述含碳碳双键的羧酸的含量为相对于乙烯-乙烯醇共聚物质量的20-2000ppm。
5.根据权利要求2或3所述的制备方法,其特征在于,清洗过程中添加醋酸和含碳碳双键的羧酸进行洗涤,使乙烯-乙烯醇共聚物中钠离子含量相对于EVOH降低至200-2000ppm,再加入钾盐,控制钠离子与钾盐中含有的钾离子的总量相对于乙烯-乙烯醇共聚物质量的200-3000ppm且钠离子与钾盐中含有的钾离子的质量比为0.1:1-1:1。
6.根据权利要求4所述的制备方法,其特征在于,清洗过程中添加醋酸和含碳碳双键的羧酸进行洗涤,使乙烯-乙烯醇共聚物中钠离子含量相对于EVOH降低至200-2000ppm,再加入钾盐,控制钠离子与钾盐中含有的钾离子的总量相对于乙烯-乙烯醇共聚物质量的200-3000ppm且钠离子与钾盐中含有的钾离子的质量比为0.1:1-1:1。
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