CN115028817B - Barrier polyester material and preparation method and application thereof - Google Patents
Barrier polyester material and preparation method and application thereof Download PDFInfo
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- CN115028817B CN115028817B CN202210447643.5A CN202210447643A CN115028817B CN 115028817 B CN115028817 B CN 115028817B CN 202210447643 A CN202210447643 A CN 202210447643A CN 115028817 B CN115028817 B CN 115028817B
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- acid
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- 229920000728 polyester Polymers 0.000 title claims abstract description 106
- 230000004888 barrier function Effects 0.000 title claims abstract description 88
- 239000000463 material Substances 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000178 monomer Substances 0.000 claims abstract description 85
- 239000006057 Non-nutritive feed additive Substances 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 21
- 239000003381 stabilizer Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 97
- 239000006185 dispersion Substances 0.000 claims description 40
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 32
- 239000003963 antioxidant agent Substances 0.000 claims description 32
- 230000003078 antioxidant effect Effects 0.000 claims description 32
- 239000011347 resin Substances 0.000 claims description 32
- 229920005989 resin Polymers 0.000 claims description 32
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 26
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 25
- 239000002105 nanoparticle Substances 0.000 claims description 24
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 18
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 13
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims description 13
- 150000004056 anthraquinones Chemical class 0.000 claims description 13
- 239000000049 pigment Substances 0.000 claims description 13
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 12
- 238000006136 alcoholysis reaction Methods 0.000 claims description 11
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 10
- 239000004611 light stabiliser Substances 0.000 claims description 10
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 10
- 239000011976 maleic acid Substances 0.000 claims description 10
- 238000006068 polycondensation reaction Methods 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 8
- 239000005022 packaging material Substances 0.000 claims description 8
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000007790 solid phase Substances 0.000 claims description 5
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 4
- 239000006229 carbon black Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- KYTZHLUVELPASH-UHFFFAOYSA-N naphthalene-1,2-dicarboxylic acid Chemical compound C1=CC=CC2=C(C(O)=O)C(C(=O)O)=CC=C21 KYTZHLUVELPASH-UHFFFAOYSA-N 0.000 claims description 4
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- CDQSJQSWAWPGKG-UHFFFAOYSA-N butane-1,1-diol Chemical compound CCCC(O)O CDQSJQSWAWPGKG-UHFFFAOYSA-N 0.000 claims description 3
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 3
- AKJVMGQSGCSQBU-UHFFFAOYSA-N zinc azanidylidenezinc Chemical compound [Zn++].[N-]=[Zn].[N-]=[Zn] AKJVMGQSGCSQBU-UHFFFAOYSA-N 0.000 claims description 3
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 2
- MHOFGBJTSNWTDT-UHFFFAOYSA-M 2-[n-ethyl-4-[(6-methoxy-3-methyl-1,3-benzothiazol-3-ium-2-yl)diazenyl]anilino]ethanol;methyl sulfate Chemical compound COS([O-])(=O)=O.C1=CC(N(CCO)CC)=CC=C1N=NC1=[N+](C)C2=CC=C(OC)C=C2S1 MHOFGBJTSNWTDT-UHFFFAOYSA-M 0.000 claims description 2
- WEHZNZTWKUYVIY-UHFFFAOYSA-N 3-oxabicyclo[3.2.2]nona-1(7),5,8-triene-2,4-dione Chemical compound O=C1OC(=O)C2=CC=C1C=C2 WEHZNZTWKUYVIY-UHFFFAOYSA-N 0.000 claims description 2
- LNYYKKTXWBNIOO-UHFFFAOYSA-N 3-oxabicyclo[3.3.1]nona-1(9),5,7-triene-2,4-dione Chemical compound C1=CC(C(=O)OC2=O)=CC2=C1 LNYYKKTXWBNIOO-UHFFFAOYSA-N 0.000 claims description 2
- GRSMWKLPSNHDHA-UHFFFAOYSA-N Naphthalic anhydride Chemical compound C1=CC(C(=O)OC2=O)=C3C2=CC=CC3=C1 GRSMWKLPSNHDHA-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052787 antimony Inorganic materials 0.000 claims description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 2
- 239000001045 blue dye Substances 0.000 claims description 2
- 239000001055 blue pigment Substances 0.000 claims description 2
- 229910052793 cadmium Inorganic materials 0.000 claims description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000001530 fumaric acid Substances 0.000 claims description 2
- 229910052732 germanium Inorganic materials 0.000 claims description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 2
- 239000001056 green pigment Substances 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 2
- 239000008267 milk Substances 0.000 claims description 2
- 210000004080 milk Anatomy 0.000 claims description 2
- 235000013336 milk Nutrition 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920000137 polyphosphoric acid Polymers 0.000 claims description 2
- 239000001054 red pigment Substances 0.000 claims description 2
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 claims description 2
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 abstract description 12
- 239000001301 oxygen Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 6
- 239000002861 polymer material Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 20
- 239000002994 raw material Substances 0.000 description 18
- -1 17.86 g) Substances 0.000 description 17
- WSXIMVDZMNWNRF-UHFFFAOYSA-N antimony;ethane-1,2-diol Chemical compound [Sb].OCCO WSXIMVDZMNWNRF-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 8
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 230000032050 esterification Effects 0.000 description 5
- 238000005886 esterification reaction Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000035699 permeability Effects 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 229920001634 Copolyester Polymers 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000007334 copolymerization reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000539 dimer Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005809 transesterification reaction Methods 0.000 description 2
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 1
- JXNPEDYJTDQORS-CZTAHCJSSA-N (9z)-octadeca-9,12-dien-1-ol Chemical compound CCCCCC=CC\C=C/CCCCCCCCO JXNPEDYJTDQORS-CZTAHCJSSA-N 0.000 description 1
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001558 benzoic acid derivatives Chemical class 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 1
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- JXNPEDYJTDQORS-UHFFFAOYSA-N linoleyl alcohol Natural products CCCCCC=CCC=CCCCCCCCCO JXNPEDYJTDQORS-UHFFFAOYSA-N 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000007539 photo-oxidation reaction Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- PJDFLNIOAUIZSL-UHFFFAOYSA-N vigabatrin Chemical compound C=CC(N)CCC(O)=O PJDFLNIOAUIZSL-UHFFFAOYSA-N 0.000 description 1
- 229960005318 vigabatrin Drugs 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
- C08G63/86—Germanium, antimony, or compounds thereof
- C08G63/866—Antimony or compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/06—Unsaturated polyesters
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging
Abstract
The invention provides a barrier polyester material, a preparation method and application thereof, and relates to the technical field of high polymer materials. The barrier polyester material provided by the invention comprises the following components in parts by weight: 10-100 parts of a first monomer, 25-90 parts of a second monomer, 0.4-10 parts of a third monomer, 0.3-4 parts of a catalyst, 0.1-2 parts of a stabilizer and 0-5 parts of a processing aid. The molecular structure of the synthetic polyester material is regulated and controlled by adding different monomer types, the production method is simple, the technological process is controllable, and the prepared polyester material has excellent barrier property to gases such as oxygen and the like.
Description
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a barrier polyester material and a preparation method and application thereof.
Background
Polyester (PET, PBT, PEN, etc.) is a plastic with excellent performance and wide application, and is widely applied to the fields of bottles, films, fibers, etc. When the polyester material is applied to the food packaging industry, the food and beverage is easy to be decomposed and deteriorated under the gas conditions of oxygen and the like, so that the packaging material is required to have certain barrier property, and the purpose of prolonging the quality guarantee period of the food is achieved. However, the barrier property of the polyester material is generally improved, and the current main technical means include monolayer coating, multilayer compounding, blending to prepare polymer alloy, copolymerization and the like. The coating is easy to crack and fall although the transparency of the coated product is good, the barrier property is affected, and coating equipment is required to be added, so that the cost is increased; the multi-layer composite is characterized in that a barrier material is arranged in the middle layer, and the disadvantage of the multi-layer composite is that the layers are easy to delaminate, the production equipment and the technical requirements are extremely high, and meanwhile, the product is difficult to recycle; blending generally has the disadvantages of phase separation, easy agglomeration of inorganic additives, poor barrier properties and the like.
The prior copolymerization is mainly to prepare copolyester by adding monomers such as benzoic acid derivatives, cis-9, 12-octadecadienol and the like when the polyester is synthesized in the early stage, or to modify finished polyester chips by adding bridging agents and barrier polymers (PA, PVA, EVOH, polyolefin and the like) in the later stage. The modification of finished product slices by adopting double screws belongs to reprocessing modification, firstly, a barrier polymer (such as polyolefin) is modified by adopting functional substances (such as epoxy, isocyanate and anhydride) which react with polyester, and then the barrier polymer is grafted to a polyester molecular chain, so that the barrier property of the polyester is enhanced, but the method belongs to post-processing, and the production cost is increased.
Compared with the double-screw modification, the synthetic copolyester belongs to the front end of the product, has less current application, and has the advantages of simple preparation process, easy control of the process, designable molecular barrier structure and the like; however, the method of modifying naphthalene dicarboxylic acid by copolymerization has the defect of insignificant improvement of barrier property.
Disclosure of Invention
In order to solve the problems in the prior art, the main purpose of the invention is to provide a barrier polyester material, and a preparation method and application thereof.
In order to achieve the above object, in a first aspect, the present invention provides a barrier polyester material, comprising the following components in parts by weight: 0-70 parts of PET resin, 10-100 parts of first monomer, 25-90 parts of second monomer, 0.4-10 parts of third monomer, 0.3-4 parts of catalyst, 0.1-2 parts of stabilizer and 0-5 parts of processing aid, wherein the first monomer is dihydric alcohol, the second monomer is dibasic acid, and the third monomer is acid containing unsaturated double bond or dihydric alcohol containing unsaturated double bond.
In the technical scheme of the invention, all monomers react with each other to generate an esterified substance, and the corresponding polyester is obtained through polycondensation and transesterification. Wherein, the double bond structure in the molecular structure of the third monomer (namely acid containing unsaturated double bond or dihydric alcohol containing unsaturated double bond) can reduce the regularity of the molecular chain, further influence the crystallization property and melting point of the polyester, and improve the barrier property of the polyester material.
As a preferred embodiment of the barrier polyester material of the present invention, the unsaturated double bond-containing acid is at least one of itaconic acid, fumaric acid, maleic acid and vigabatrin acid; the dihydric alcohol containing unsaturated double bonds is at least one of 1, 4-butylene glycol and 3-butylene-1, 2-glycol.
In the technical scheme of the invention, when the third monomer is acid containing unsaturated double bonds, the third monomer can catalyze the esterification of the first monomer (dihydric alcohol) and the second monomer (dibasic acid), so that the reaction efficiency is improved.
As a preferred embodiment of the barrier polyester material of the present invention, the first monomer is at least one of ethylene glycol, propylene glycol, and butylene glycol; the second monomer is at least one of terephthalic acid, isophthalic acid, naphthalene dicarboxylic acid, terephthalic anhydride, isophthalic anhydride and naphthalene dicarboxylic anhydride.
As a preferred embodiment of the barrier polyester material, the barrier polyester material further comprises 0-70 parts by weight of polyester, wherein the polyester is at least one of PET resin, PBT resin, PTT resin, PETG resin and PEN resin.
Acids containing unsaturated double bonds or diols containing unsaturated double bonds can also promote alcoholysis of polyesters (i.e., PET).
In the technical scheme of the invention, corresponding polyesters can be introduced according to the types of the first monomer and the second monomer, for example, when the first monomer is ethylene glycol and the second monomer is terephthalic acid, as the esterification product of ethylene glycol and terephthalic acid is ethylene terephthalate (oligomer such as dimer of PET), a certain amount of PET resin can be introduced into a reaction system. When the addition amount of the PET resin is not 0, obtaining corresponding oligomers such as a dimer after the PET resin is alcoholyzed, and obtaining corresponding polyester through esterification, polycondensation and transesterification with a third monomer; meanwhile, the first monomer and the second monomer existing in the system can synthesize the corresponding polyester material according to the original reaction path.
It should be noted that the polyester introduced in the invention is generally recycled polyester, so that the recycling of the recycled polyester can be realized, the fossil energy consumption is reduced, the production cost is saved, and the application of the polyester is expanded to the fields of hot filling, barrier packaging and the like.
As a preferred embodiment of the barrier polyester material of the present invention, the catalyst is a compound containing any one of titanium, antimony, zinc and germanium; the stabilizer is at least one of polyphosphoric acid, phosphoric acid, triphenyl phosphate, trimethyl phosphate and phosphorous acid.
As a preferred embodiment of the barrier polyester material of the present invention, the processing aid is at least one of a nanoparticle pre-dispersion, a toner, an antioxidant and a light stabilizer.
As a preferred embodiment of the barrier polyester material of the present invention, at least one of the following (a) to (d) is included:
(a) The nano-particle pre-dispersion liquid is 0.01-3 parts by weight, and is at least one of titanium nitride glycol dispersion liquid, zinc nitride glycol dispersion liquid, carbon black glycol dispersion liquid and nano titanium dioxide glycol dispersion liquid, wherein the particle size of nano-particles in the nano-particle pre-dispersion liquid is 1-100nm;
the main functions of titanium nitride, zinc nitride, carbon black or nano titanium dioxide in the nano particle pre-dispersion liquid are to accelerate the heat absorption efficiency and the heat stability of the product in the processing process (such as blow molding), so that the production efficiency is improved, the energy consumption is reduced, and the nano particle pre-dispersion liquid is suitable for products such as hot filling; meanwhile, the inorganic nano particles can also be used as physical crosslinking points, so that the barrier property of the product to gas and the strength of the material are further improved;
(b) 0.001-0.01 part by weight of toner, wherein the toner is at least one of phthalocyanine green pigment, anthraquinone pigment, phthalocyanine blue pigment, cadmium red pigment and basic blue dye;
(c) The antioxidant is 0.01-2 parts by weight;
the antioxidant added in the technical scheme is a free radical capturing antioxidant and/or an auxiliary antioxidant, and the antioxidant is added in the later period of synthesis, so that the degradation reaction of a copolyester macromolecular chain in the synthesis and processing processes can be reduced, the stability and the color phase of the product are improved, the aging of the product under the condition test of thermal oxygen and the like is delayed in the later use process of the product, the barrier property is enhanced to a certain extent, and the shelf life of food and beverage is prolonged;
(d) The light stabilizer is 0.01-0.3 weight parts.
The light stabilizer added in the technical scheme is a hindered amine light stabilizer, the light stabilizer is free radical capture type, the capturing efficiency of photons is high, the light stabilizer can be used as a second light stabilization line, carbon black and titanium dioxide to synergistically enhance the light stabilization performance, and the damage of conditions such as photooxidation to products is reduced; meanwhile, the self-assembled polymer can be used as a self-assembled capturing type polymer, can also cooperate with antioxidation, and further enhances the barrier property and the like of the product.
In a second aspect, the invention also provides a preparation method of the barrier polyester material, which comprises the following steps:
(1) Mixing the first monomer, the second monomer, the third monomer, the catalyst and the stabilizer to obtain alcoholysis liquid;
(2) Adding polyester into the alcoholysis solution, and reacting for 1-6 hours at 160-250 ℃ with stirring speed of 10-80rpm and pressure of 0.1-0.3MPa to obtain an oligomer melt;
(3) Adding a processing aid into the oligomer melt, reacting for 1-6 hours under vacuum condition at 230-290 ℃ and stirring speed of 10-60rpm to obtain a material with viscosity of 0.6-0.65dL/g, and obtaining a separation PET slice after water cooling, granulating and drying;
(4) And carrying out polycondensation reaction on the barrier PET slice through a tackifying process to finally obtain the finished barrier PET slice with the viscosity of 0.8-1.3 dL/g.
As a preferred embodiment of the preparation method of the barrier polyester material, the tackifying process in the step (4) is at least one of liquid-phase tackifying and solid-phase tackifying.
As a preferred embodiment of the method for preparing a barrier polyester material of the present invention, the tackifying process operation parameters in the step (4) are: the temperature is 160-240 ℃, and the retention time of the PET slice is 6-18h.
In a third aspect, the invention also proposes the use of a barrier polyester material in a packaging material.
Preferably, the packaging material is wine bottle or milk product packaging material.
Compared with the prior art, the invention has the beneficial effects that:
the molecular structure of the barrier polyester material provided by the invention can be regulated and controlled by adding different monomer types, the production method is simple, the technological process is controllable, and the prepared polyester material has excellent barrier property to gases such as oxygen and the like.
Detailed Description
For a better description of the objects, technical solutions and advantages of the present invention, the present invention will be further described by means of specific examples.
Example 1
The barrier polyester material of this embodiment comprises the following raw material components: a first monomer (ethylene glycol, 1605.31 g), a second monomer (terephthalic acid, 2874.74 g), a third monomer (maleic acid, 105.79 g), a catalyst (ethylene glycol antimony, 100 g), a stabilizer (phosphoric acid, 17.86 g), and a processing aid, wherein the processing aid comprises a toner (anthraquinone pigment, 1.78 g), an antioxidant (antioxidant 2246,5 g), and a nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, titanium nitride 0.375 g);
the preparation method of the barrier polyester material of the embodiment comprises the following steps:
(1) Mixing terephthalic acid, ethylene glycol, maleic acid, a catalyst and a stabilizer to prepare an alcoholysis solution, and introducing the alcoholysis solution into a reaction kettle;
(2) Controlling the temperature of the reaction kettle between 190 ℃ and 200 ℃, stirring at 60rpm and the system pressure of 0.20Mpa, carrying out esterification and alcoholysis, and reacting for about 3 hours after the distilled water approaches the theoretical value to obtain an oligomer melt;
(3) Filtering the oligomer melt through a melt filter, introducing the oligomer melt into a polycondensation kettle, adding a toner, an antioxidant and a nanoparticle pre-dispersion liquid, stirring for 10min, controlling the reaction temperature to be between 250 and 260 ℃, starting a vacuum system to perform polycondensation reaction, opening a belt casting head heat source for 20min before the viscosity reaches 0.62dL/g, heating the belt casting head heat source until the viscosity reaches about 0.62dL/g, stopping stirring, discharging, water-cooling, granulating and drying to obtain a barrier PET slice;
(4) And (3) tackifying the barrier PET slice through solid phase polycondensation, controlling the temperature to be 180-220 ℃ for 12 hours, removing VOC gas, and obtaining the finished barrier PET slice after finishing.
Example 2
The barrier polyester material of this embodiment comprises the following raw material components: PET resin (recycled polyester chips, 1500 g), first monomer (ethylene glycol, 1605.31 g), second monomer (terephthalic acid, 2874.74 g), third monomer (maleic acid, 105.79 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g) and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g) and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, containing titanium nitride 0.375 g);
the preparation method of the barrier polyester material of the embodiment comprises the following steps:
(1) Mixing terephthalic acid, ethylene glycol, maleic acid, a catalyst and a stabilizer to prepare an alcoholysis solution, and introducing the alcoholysis solution into a reaction kettle;
(2) Adding the recovered polyester chips into a reaction kettle, controlling the temperature of the reaction kettle between 190 ℃ and 200 ℃, controlling the stirring speed to be 60rpm, controlling the system pressure to be 0.20Mpa, carrying out esterification and alcoholysis, and after the distilled water approaches a theoretical value, finishing the reaction, and reacting for about 3 hours to obtain an oligomer melt;
(3) Filtering the oligomer melt through a melt filter, introducing the oligomer melt into a polycondensation kettle, adding a toner, an antioxidant and a nanoparticle pre-dispersion liquid, stirring for 10min, controlling the reaction temperature to be between 250 and 260 ℃, starting a vacuum system to perform polycondensation reaction, opening a belt casting head heat source for 20min before the viscosity reaches 0.62dL/g, heating the belt casting head heat source until the viscosity reaches about 0.62dL/g, stopping stirring, discharging, water-cooling, granulating and drying to obtain a barrier PET slice;
(4) And (3) tackifying the barrier PET slice through solid phase polycondensation, controlling the temperature to be 180-220 ℃ for 12 hours, removing VOC gas, and obtaining the finished barrier PET slice after finishing.
Example 3
The barrier polyester material of this embodiment comprises the following raw material components: a first monomer (ethylene glycol, 1605.31 g), a second monomer (terephthalic acid, 2874.74 g), a third monomer (maleic acid, 105.79 g), a catalyst (ethylene glycol antimony, 100 g), and a stabilizer (phosphoric acid, 17.86 g);
the preparation method of the barrier polyester material of this example is the same as that of example 1.
Example 4
The barrier polyester material of this embodiment comprises the following raw material components: PET resin (recycled polyester chips, 1500 g), first monomer (propylene glycol, 1705.31 g), second monomer (isophthalic acid, 2723.44 g), third monomer (maleic acid, 211.59 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (tribenzoyl phosphate, 180 g) and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g), nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, titanium nitride containing 0.375 g) and light stabilizer (hindered amine light stabilizer, 2.0 g);
the preparation method of the barrier polyester material of this example is the same as that of example 2.
Example 5
The barrier polyester material of this embodiment comprises the following raw material components: PET resin (recycled polyester chips, 1500 g), first monomer (ethylene glycol, 1605.31 g), second monomer (terephthalic acid, 2874.74 g), third monomer (maleic acid, 105.79 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g) and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g) and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, containing titanium nitride 0.5 g);
the preparation method of the barrier polyester material of this example is the same as that of example 2.
Example 6
The barrier polyester material of this embodiment comprises the following raw material components: PET resin (recycled polyester chips, 1500 g), first monomer (ethylene glycol, 1524.65 g), second monomer (terephthalic acid, 3026.04 g), third monomer (1, 4-butylene glycol, 114.03 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g) and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g) and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, containing titanium nitride 0.5 g);
the preparation method of the barrier polyester material of this example is the same as that of example 2.
Example 7
The raw material composition of the barrier polyester material of this example is substantially the same as that of example 2, except that: the application adopts PBT resin to replace PET resin, and the first monomer is butanediol, namely the barrier polyester material of the embodiment comprises the following raw material components: PBT resin (recycled polyester chips, 1500 g), first monomer (butanediol, 1524.65 g), second monomer (terephthalic acid, 3026.04 g), third monomer (1, 4-butylene glycol, 114.03 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g), and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g), and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, titanium nitride 0.5 g);
the preparation method of the barrier polyester material of this example is the same as that of example 2.
Example 8
The raw material composition of the barrier polyester material of this example is substantially the same as that of example 2, except that: the application adopts PTT resin to replace PET resin, and the first monomer is propylene glycol, namely the barrier polyester material of the embodiment comprises the following raw material components: PTT resin (recycled polyester chips, 1500 g), first monomer (propylene glycol, 1524.65 g), second monomer (terephthalic acid, 3026.04 g), third monomer (1, 4-butylene glycol, 114.03 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g) and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g) and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, titanium nitride 0.5 g);
the preparation method of the barrier polyester material of this example is the same as that of example 2.
Example 9
The raw material composition of the barrier polyester material of this example is substantially the same as that of example 2, except that: the application adopts PEN resin to replace PET resin, and the first monomer is propylene glycol, namely the barrier polyester material of the embodiment comprises the following raw material components: PEN resin (recycled polyester chips, 1500 g), first monomer (ethylene glycol, 1524.65 g), second monomer (naphthalene dicarboxylic acid, 3026.04 g), third monomer (1, 4-butylene glycol, 114.03 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g), and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g) and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, titanium nitride 0.5 g);
the preparation method of the barrier polyester material of this example is the same as that of example 2.
Example 10
The raw material composition of the barrier polyester material of this example is substantially the same as that of example 2, except that: the application adopts PETG resin to replace PET resin, and the first monomer is ethylene glycol, namely the barrier polyester material of the embodiment comprises the following raw material components: PETG resin (recycled polyester chips, 1500 g), first monomer (ethylene glycol, 1524.65 g), second monomer (terephthalic acid, 3026.04 g), third monomer (1, 4-butylene glycol, 114.03 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g) and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g) and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, titanium nitride containing 0.5 g);
the preparation method of the barrier polyester material of this example is the same as that of example 2.
Comparative example 1
The raw material composition of the polyester material of this comparative example was substantially the same as in example 1, except that: the present comparative example does not add a third monomer;
the polyester material of this comparative example was prepared in the same manner as in example 1.
Comparative example 2
The barrier polyester material of this comparative example comprises the following raw material components: PET resin (recycled polyester chips, 1500 g), first monomer (ethylene glycol, 1605.31 g), second monomer (terephthalic acid, 3026.04 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g) and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g) and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, titanium nitride 0.5 g);
the preparation method of the barrier polyester material of this comparative example is the same as that of example 2.
Comparative example 3
The barrier polyester material of this comparative example comprises the following raw material components: PET resin (recycled polyester chips, 1500 g), first monomer (ethylene glycol, 1605.31 g), second monomer (terephthalic acid, 2965.52 g), third monomer (maleic acid, 42.32 g), catalyst (ethylene glycol antimony, 100 g), stabilizer (phosphoric acid, 17.86 g) and processing aid, wherein the processing aid comprises toner (anthraquinone pigment, 1.78 g), antioxidant (antioxidant 2246,5 g) and nanoparticle pre-dispersion (titanium nitride ethylene glycol dispersion, containing titanium nitride 0.375 g);
the preparation method of the barrier polyester material of this comparative example is the same as that of example 2.
Comparative example 4
The barrier polyester material of this comparative example comprises the following raw material components in the same manner as in example 2;
the preparation method of the barrier polyester material of this comparative example is basically the same as that of example 2, except that: the viscosity in step (3) of this comparative example was 0.4dL/g.
Performance testing
(1) Viscosity: using an AVS370 automatic viscometer, refer to the intrinsic viscosity test method in GB/T14190-2017; measuring the outflow time of the solvent at 25 ℃ and the PET solution with the concentration of 0.005g/ml, and calculating according to the measured outflow time and the solution concentration of the sample;
(2) Oxygen permeability: using a 2/22H membrane oxygen permeation meter, referring to a method for testing oxygen transmittance in GB/T31354-2014; under experimental conditions, the amount of oxygen that penetrates into the package from the outside to the inside per unit time was measured.
The property data of the products obtained in examples 1 to 10 and comparative examples 1 to 4 are shown in Table 1 below.
TABLE 1 Performance data for the products obtained in examples 1-10, comparative examples 1-4
As can be seen from table 1, the oxygen permeability of the polyester material prepared in example 1 was significantly reduced after the third monomer was added, compared to comparative example 1; compared with comparative example 2, the oxygen permeability of the correspondingly prepared polyester material is also significantly reduced after the third monomer is added in example 2; therefore, the introduction of the third monomer has obvious improvement effect on the barrier property of the polyester material;
compared with the embodiment 2, the addition amount of the third monomer in the comparative example 3 is lower, the oxygen permeability of the correspondingly prepared polyester material is larger, the barrier property of the polyester material is influenced by the addition amount of the third monomer, and the addition amount of the third monomer is too low, so that the improvement of the barrier property of the polyester material is also not facilitated.
In the production process of comparative example 4, the viscosity in step (3) was controlled to be 0.4dL/g (the viscosity value was lower) as compared with example 2, corresponding to a production of a polyester material having a larger oxygen permeability. This indicates that the viscosity in step (3) is strictly controlled within a specified range during the preparation of the polyester material.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. The barrier polyester material is characterized by comprising the following components in parts by weight: 10-100 parts of a first monomer, 25-90 parts of a second monomer, 0.4-10 parts of a third monomer, 0-70 parts of polyester, 0.3-4 parts of a catalyst, 0.1-2 parts of a stabilizer and 0-5 parts of a processing aid, wherein the first monomer is at least one of ethylene glycol, propylene glycol and butanediol; the second monomer is at least one of terephthalic acid, isophthalic acid, naphthalene dicarboxylic acid, terephthalic anhydride, isophthalic anhydride and naphthalene dicarboxylic anhydride, and the third monomer is an acid containing an unsaturated double bond; the acid containing unsaturated double bonds is at least one of itaconic acid, fumaric acid and maleic acid; the polyester is at least one of PET resin, PBT resin, PTT resin, PETG resin and PEN resin; the preparation method of the barrier polyester material comprises the following steps:
(1) Mixing the first monomer, the second monomer, the third monomer, the catalyst and the stabilizer to obtain alcoholysis liquid;
(2) Adding polyester into the alcoholysis solution, and reacting for 1-6 hours at 160-250 ℃ with stirring speed of 10-80rpm and pressure of 0.1-0.3MPa to obtain an oligomer melt;
(3) Adding a processing aid into the oligomer melt, reacting for 1-6 hours under vacuum condition at 230-290 ℃ and stirring speed of 10-60rpm to obtain a material with viscosity of 0.6-0.65dL/g, and obtaining a blocking PET slice after water cooling, granulating and drying;
(4) And carrying out polycondensation reaction on the barrier PET slice through a tackifying process to finally obtain the finished barrier PET slice with the viscosity of 0.8-1.3 dL/g.
2. The barrier polyester material of claim 1, wherein the catalyst is a compound comprising any one of titanium, antimony, zinc, and germanium; the stabilizer is at least one of polyphosphoric acid, phosphoric acid, triphenyl phosphate, trimethyl phosphate and phosphorous acid.
3. The barrier polyester material of claim 1, wherein the processing aid is at least one of a nanoparticle pre-dispersion, a toner, an antioxidant, and a light stabilizer.
4. A barrier polyester material as claimed in claim 3, comprising at least one of the following (a) - (d):
(a) The nano-particle pre-dispersion liquid is 0.01-3 parts by weight, and is at least one of titanium nitride glycol dispersion liquid, zinc nitride glycol dispersion liquid, carbon black glycol dispersion liquid and nano titanium dioxide glycol dispersion liquid, wherein the particle size of nano-particles in the nano-particle pre-dispersion liquid is 1-100nm;
(b) 0.001-0.01 part by weight of toner, wherein the toner is at least one of phthalocyanine green pigment, anthraquinone pigment, phthalocyanine blue pigment, cadmium red pigment and basic blue dye;
(c) The antioxidant is 0.01-2 parts by weight;
(d) The light stabilizer is 0.01-0.3 weight parts.
5. The barrier polyester material of claim 4, wherein the tackifying process in step (4) is at least one of liquid phase tackifying and solid phase tackifying, and the solid phase tackifying process operating parameters are: the temperature is 160-240 ℃, and the retention time of the PET slice is 6-18h.
6. Use of a barrier polyester material as claimed in any one of claims 1 to 5 in packaging material.
7. Use of a barrier polyester material according to claim 6 in packaging material, wherein the packaging material is wine bottles, milk packaging material.
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