CN118185252A - Modified PET plastic and preparation method thereof - Google Patents
Modified PET plastic and preparation method thereof Download PDFInfo
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- CN118185252A CN118185252A CN202410380817.XA CN202410380817A CN118185252A CN 118185252 A CN118185252 A CN 118185252A CN 202410380817 A CN202410380817 A CN 202410380817A CN 118185252 A CN118185252 A CN 118185252A
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- 229920003023 plastic Polymers 0.000 title claims abstract description 51
- 239000004033 plastic Substances 0.000 title claims abstract description 51
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000011347 resin Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 25
- 239000003365 glass fiber Substances 0.000 claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000004593 Epoxy Substances 0.000 claims abstract description 18
- 239000004697 Polyetherimide Substances 0.000 claims abstract description 18
- 229920001601 polyetherimide Polymers 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 239000007822 coupling agent Substances 0.000 claims abstract description 16
- 239000000314 lubricant Substances 0.000 claims abstract description 16
- -1 (3, 6-diaminoacridine-9-yl) boric acid Chemical compound 0.000 claims abstract description 14
- JCUYNPHEESTECG-UHFFFAOYSA-N 3-amino-6-(4-aminophenyl)benzene-1,2-disulfonic acid Chemical compound C1=CC(N)=CC=C1C1=CC=C(N)C(S(O)(=O)=O)=C1S(O)(=O)=O JCUYNPHEESTECG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920001450 Alpha-Cyclodextrin Polymers 0.000 claims abstract description 10
- 229940043377 alpha-cyclodextrin Drugs 0.000 claims abstract description 10
- 229920000137 polyphosphoric acid Polymers 0.000 claims abstract description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 239000011574 phosphorus Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 14
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002356 single layer Substances 0.000 claims description 7
- TXQVDVNAKHFQPP-UHFFFAOYSA-N [3-hydroxy-2,2-bis(hydroxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(CO)(CO)CO TXQVDVNAKHFQPP-UHFFFAOYSA-N 0.000 claims description 6
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 5
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 4
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 claims description 4
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000032683 aging Effects 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 59
- 239000005020 polyethylene terephthalate Substances 0.000 description 59
- 230000000052 comparative effect Effects 0.000 description 5
- 238000003878 thermal aging Methods 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 239000013538 functional additive Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010899 nucleation Methods 0.000 description 2
- 230000006911 nucleation Effects 0.000 description 2
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 229920000858 Cyclodextrin Polymers 0.000 description 1
- 206010015866 Extravasation Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- GYUDLEOKVQWEHB-UHFFFAOYSA-N acridine Chemical compound C1=CC=CC2=CC3=CC=CC=C3N=C21.C1=CC=CC2=CC3=CC=CC=C3N=C21 GYUDLEOKVQWEHB-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- DZBUGLKDJFMEHC-UHFFFAOYSA-N benzoquinolinylidene Natural products C1=CC=CC2=CC3=CC=CC=C3N=C21 DZBUGLKDJFMEHC-UHFFFAOYSA-N 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 125000005619 boric acid group Chemical group 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036251 extravasation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910001392 phosphorus oxide Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003335 steric effect Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- VSAISIQCTGDGPU-UHFFFAOYSA-N tetraphosphorus hexaoxide Chemical compound O1P(O2)OP3OP1OP2O3 VSAISIQCTGDGPU-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/329—Phosphorus containing acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a modified PET plastic and a preparation method thereof, which relate to the technical field of plastic preparation and are prepared from the following raw materials in parts by weight: 65-75 parts of PET resin, 20-30 parts of hyperbranched polyetherimide epoxy compound, 3-5 parts of benzidine disulfonic acid, 0.3-0.5 part of phosphorus oxide-free, 0.1-0.2 part of polyphosphoric acid, 1-3 parts of coupling agent, 0.6-1.2 parts of antioxidant, 0.8-1.6 parts of lubricant, 3-5 parts of graphene oxide, 6-8 parts of amino-alpha-cyclodextrin, 10-20 parts of glass fiber and 1-2 parts of (3, 6-diaminoacridine-9-yl) boric acid. The modified PET plastic has the advantages of good mechanical property, sufficient high temperature resistance, good ageing resistance, excellent flame retardance and excellent environmental protection performance.
Description
Technical Field
The invention relates to the technical field of chemical production, in particular to a modified PET plastic and a preparation method thereof.
Background
Polyethylene terephthalate (PET) is an aromatic crystalline polymer, shows higher elastic modulus and impact strength, excellent high temperature resistance and solvent resistance, is nontoxic and tasteless, and has good gas barrier property. PET can be widely used in the fields of fiber, film, food and beverage package, engineering plastics and the like, and has the using amount inferior to that of polyolefin in the global scope. However, the pure PET resin has the defects of poor high temperature resistance, poor barrier property, insufficient impact toughness, aging resistance, mechanical properties and the like, so that the PET plastic product has the problems of variability, short shelf life and the like.
In order to solve the problems, it is common practice in the industry to add functional additives to PET plastics, however, the addition of a large amount of functional additives causes defects of poor processing fluidity and high production cost. And due to the compatibility problem between the functional additives and the PET base material, the extravasation phenomenon is easy to occur in the long-term use process, and the attractiveness, the use safety, the performance stability and the service life of the PET plastic product are affected. For example, the Chinese patent with the publication number of CN102827462B discloses a modified PET composite material and a preparation method thereof, and the invention perfects the crystallization structure of PET and increases the crystallinity and the crystallization rate of PET under the compound nucleation system of a compound nucleating agent and a compound nucleation accelerator; according to the invention, under the compound flame-retardant system of the bromine-containing flame retardant and the flame-retardant synergist, the generation and accumulation of free carbon are reduced, and the flame retardant property of the PET engineering plastic is enhanced. However, the environmental performance and the thermal aging resistance thereof are still to be further improved.
Therefore, the modified PET plastic with good mechanical properties, sufficient high temperature resistance, good ageing resistance and excellent flame retardance and environmental protection performance and the preparation method thereof are developed, meet the market demand, have wide market value and application prospect, and have great significance in promoting the development of the PET plastic field.
Disclosure of Invention
In view of the above problems, the invention aims to provide a modified PET plastic with good mechanical properties, sufficient high temperature resistance, good aging resistance, excellent flame retardance and environmental protection performance and a preparation method thereof.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: a modified PET plastic is prepared from the following raw materials in parts by weight: 65-75 parts of PET resin, 20-30 parts of hyperbranched polyetherimide epoxy compound, 3-5 parts of benzidine disulfonic acid, 0.3-0.5 part of phosphorus oxide-free, 0.1-0.2 part of polyphosphoric acid, 1-3 parts of coupling agent, 0.6-1.2 parts of antioxidant, 0.8-1.6 parts of lubricant, 3-5 parts of graphene oxide, 6-8 parts of amino-alpha-cyclodextrin, 10-20 parts of glass fiber and 1-2 parts of (3, 6-diaminoacridine-9-yl) boric acid.
Preferably, the PET resin is at least one of a PET008L resin produced by Xiamen Tenglong DSR TL-103PET resin, canada Aclo Compounders company, and a petrochemical YS-W01 PET resin produced by Hainan Yisheng in China.
Preferably, the hyperbranched polyetherimide epoxy compound is derived from a source without special requirements, and in one embodiment of the present invention, the hyperbranched polyetherimide epoxy compound is prepared according to the method of example 35 of chinese patent application publication No. CN 110951076B.
Preferably, the coupling agent is at least one of a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH 570.
Preferably, the antioxidant is at least one of antioxidant 1010, antioxidant 1076 and antioxidant 168.
Preferably, the lubricant is at least one of pentaerythritol stearate and ethylene bis-stearamide.
Preferably, the graphene oxide is single-layer graphene oxide, the sheet diameter is 0.5-5 mu m, and the thickness is 0.8-1.2 nm.
Preferably, the glass fiber is alkali-free glass fiber, the average diameter is 3-9 μm, and the length-diameter ratio is (20-30): 1.
The invention also aims at providing a preparation method of the modified PET plastic, which comprises the following steps: and uniformly mixing the raw materials in parts by weight to obtain a mixed material, and then adding the mixed material into a double-screw extruder for extrusion molding to obtain the modified PET plastic.
Preferably, the temperature of the double-screw extruder during extrusion molding is 260-285 ℃, and the screw rotating speed is 280-360r/min.
Compared with the prior art, the invention has the beneficial effects that:
(1) The preparation method of the modified PET plastic disclosed by the invention has the advantages of simple process, convenience in operation control, low equipment dependence, low energy consumption, high preparation efficiency and yield, suitability for industrial production and higher popularization and application values.
(2) The invention discloses modified PET plastic which is prepared from the following raw materials in parts by weight: 65-75 parts of PET resin, 20-30 parts of hyperbranched polyetherimide epoxy compound, 3-5 parts of benzidine disulfonic acid, 0.3-0.5 part of phosphorus oxide-free, 0.1-0.2 part of polyphosphoric acid, 1-3 parts of coupling agent, 0.6-1.2 parts of antioxidant, 0.8-1.6 parts of lubricant, 3-5 parts of graphene oxide, 6-8 parts of amino-alpha-cyclodextrin, 10-20 parts of glass fiber and 1-2 parts of (3, 6-diaminoacridine-9-yl) boric acid. Through mutual matching and combined action among the raw materials, the prepared modified PET plastic has good mechanical properties, sufficient high temperature resistance, good ageing resistance, excellent flame retardance and excellent environmental protection performance.
(3) According to the modified PET plastic disclosed by the invention, polyester, hyperbranched polyetherimide, biphenyl, sulfonyl, cyclodextrin, acridine and boric acid structures are simultaneously introduced into a plastic molecular structure, and under the multiple effects of an electronic effect, a steric effect and a conjugation effect, the mechanical properties of the prepared modified PET plastic are better, the high-temperature resistance is more sufficient, the ageing resistance is better, the flame retardance is more sufficient, no halogen-containing raw material is introduced, no toxic smoke is released when a fire disaster occurs, and the environmental protection performance is better.
(4) The epoxy group on the hyperbranched polyetherimide epoxy compound can react with the amino groups on benzidine disulfonic acid, amino-alpha-cyclodextrin and (3, 6-diaminoacridine-9-yl) boric acid in an epoxy ring-opening way, and simultaneously, the sulfonic group on benzidine disulfonic acid can react with the benzene ring on PET resin under the catalysis of phosphorus oxide and polyphosphoric acid to obtain a structure containing sulfonyl, and the interaction of the diameters of the raw materials influences the formation of multiple interpenetrating network structures in the plastic, so that the interpenetrating network structures exist simultaneously, the prepared product has better comprehensive performance and performance stability, and is particularly characterized by better mechanical and mechanical properties, better high temperature resistance, better ageing resistance and better flame retardance.
Detailed Description
In order to better understand the technical solution of the present invention, the following describes the product of the present invention in further detail with reference to examples.
Example 1
A modified PET plastic is prepared from the following raw materials in parts by weight: 65 parts of PET resin, 20 parts of hyperbranched polyetherimide epoxy compound, 3 parts of benzidine disulfonic acid, 0.3 part of phosphorus oxide-free, 0.1 part of polyphosphoric acid, 1 part of coupling agent, 0.6 part of antioxidant, 0.8 part of lubricant, 3 parts of graphene oxide, 6 parts of amino-alpha-cyclodextrin, 10 parts of glass fiber and 1 part of (3, 6-diaminoacridin-9-yl) boric acid.
The PET resin is a Tsian DSR TL-103PET resin of Xiamen; the hyperbranched polyetherimide epoxy compound is prepared according to the method of the Chinese invention patent example 35 with the authorized bulletin number of CN 110951076B; the coupling agent is a silane coupling agent KH550; the antioxidant is antioxidant 1010; the lubricant is pentaerythritol stearate; the graphene oxide is single-layer graphene oxide, the sheet diameter is 0.5-5 mu m, and the thickness is 0.8-1.2 nm; the glass fiber is alkali-free glass fiber, the average diameter is 3 mu m, and the length-diameter ratio is 20:1.
The preparation method of the modified PET plastic comprises the following steps: uniformly mixing the raw materials in parts by weight to obtain a mixed material, and then adding the mixed material into a double-screw extruder for extrusion molding to obtain modified PET plastic; the temperature of the double-screw extruder is 260 ℃ during extrusion molding, and the screw rotating speed is 280r/min.
Example 2
A modified PET plastic is prepared from the following raw materials in parts by weight: 68 parts of PET resin, 23 parts of hyperbranched polyetherimide epoxy compound, 3.5 parts of benzidine disulfonic acid, 0.35 part of phosphorus oxide-free, 0.13 part of polyphosphoric acid, 1.5 parts of coupling agent, 0.8 part of antioxidant, 1 part of lubricant, 3.5 parts of graphene oxide, 6.5 parts of amino-alpha-cyclodextrin, 13 parts of glass fiber and 1.2 parts of (3, 6-diaminoacridin-9-yl) boric acid.
The PET resin is a Tsian DSR TL-103PET resin of Xiamen; the hyperbranched polyetherimide epoxy compound is prepared according to the method of the Chinese invention patent example 35 with the authorized bulletin number of CN 110951076B; the coupling agent is silane coupling agent KH560; the antioxidant is antioxidant 1076;
The lubricant is ethylene bis stearamide; the graphene oxide is single-layer graphene oxide, the sheet diameter is 0.5-5 mu m, and the thickness is 0.8-1.2 nm; the glass fiber is alkali-free glass fiber, the average diameter is 5 mu m, and the length-diameter ratio is 23:1.
The preparation method of the modified PET plastic comprises the following steps: uniformly mixing the raw materials in parts by weight to obtain a mixed material, and then adding the mixed material into a double-screw extruder for extrusion molding to obtain modified PET plastic; the temperature of the double-screw extruder is 270 ℃ and the screw rotating speed is 310r/min during extrusion molding.
Example 3
A modified PET plastic is prepared from the following raw materials in parts by weight: 70 parts of PET resin, 25 parts of hyperbranched polyetherimide epoxy compound, 4 parts of benzidine disulfonic acid, 0.4 part of phosphorus oxide-free, 0.15 part of polyphosphoric acid, 2 parts of coupling agent, 0.9 part of antioxidant, 1.3 parts of lubricant, 4 parts of graphene oxide, 7 parts of amino-alpha-cyclodextrin, 15 parts of glass fiber and 1.5 parts of (3, 6-diaminoacridin-9-yl) boric acid.
The PET resin is a Tsian DSR TL-103PET resin of Xiamen; the hyperbranched polyetherimide epoxy compound is prepared according to the method of the Chinese invention patent example 35 with the authorized bulletin number of CN 110951076B; the coupling agent is a silane coupling agent KH570; the antioxidant is antioxidant 168;
The lubricant is pentaerythritol stearate; the graphene oxide is single-layer graphene oxide, the sheet diameter is 0.5-5 mu m, and the thickness is 0.8-1.2 nm; the glass fiber is alkali-free glass fiber, the average diameter is 7 mu m, and the length-diameter ratio is 25:1.
The preparation method of the modified PET plastic comprises the following steps: uniformly mixing the raw materials in parts by weight to obtain a mixed material, and then adding the mixed material into a double-screw extruder for extrusion molding to obtain modified PET plastic; the temperature of the double-screw extruder is 273 ℃ and the screw rotating speed is 330r/min during extrusion molding.
Example 4
A modified PET plastic is prepared from the following raw materials in parts by weight: 73 parts of PET resin, 28 parts of hyperbranched polyetherimide epoxy compound, 4.5 parts of benzidine disulfonic acid, 0.45 part of phosphorus oxide-free, 0.18 part of polyphosphoric acid, 2.5 parts of coupling agent, 1.1 parts of antioxidant, 1.4 parts of lubricant, 4.5 parts of graphene oxide, 7.5 parts of amino-alpha-cyclodextrin, 18 parts of glass fiber and 1.8 parts of (3, 6-diaminoacridin-9-yl) boric acid.
The PET resin is a Tsian DSR TL-103PET resin of Xiamen; the hyperbranched polyetherimide epoxy compound is prepared according to the method of the Chinese invention patent example 35 with the authorized bulletin number of CN 110951076B; the coupling agent is a mixture formed by mixing a silane coupling agent KH550, a silane coupling agent KH560 and a silane coupling agent KH570 according to a mass ratio of 1:3:5; the antioxidant is a mixture formed by mixing an antioxidant 1010, an antioxidant 1076 and an antioxidant 168 according to a mass ratio of 1:2:2;
The lubricant is a mixture formed by mixing pentaerythritol stearate and ethylene bis-stearamide according to a mass ratio of 2:5; the graphene oxide is single-layer graphene oxide, the sheet diameter is 0.5-5 mu m, and the thickness is 0.8-1.2 nm; the glass fiber is alkali-free glass fiber, the average diameter is 8 mu m, and the length-diameter ratio is 28:1.
The preparation method of the modified PET plastic comprises the following steps: uniformly mixing the raw materials in parts by weight to obtain a mixed material, and then adding the mixed material into a double-screw extruder for extrusion molding to obtain modified PET plastic; the temperature of the double-screw extruder is 280 ℃ during extrusion molding, and the screw rotating speed is 350r/min.
Example 5
A modified PET plastic is prepared from the following raw materials in parts by weight: 75 parts of PET resin, 30 parts of hyperbranched polyetherimide epoxy compound, 5 parts of benzidine disulfonic acid, 0.5 part of phosphorus oxide-free, 0.2 part of polyphosphoric acid, 3 parts of coupling agent, 1.2 parts of antioxidant, 1.6 parts of lubricant, 5 parts of graphene oxide, 8 parts of amino-alpha-cyclodextrin, 20 parts of glass fiber and 2 parts of (3, 6-diaminoacridin-9-yl) boric acid.
The PET resin is a Tsian DSR TL-103PET resin of Xiamen; the hyperbranched polyetherimide epoxy compound is prepared according to the method of the Chinese invention patent example 35 with the authorized bulletin number of CN 110951076B; the coupling agent is a silane coupling agent KH550; the antioxidant is antioxidant 168;
The lubricant is pentaerythritol stearate; the graphene oxide is single-layer graphene oxide, the sheet diameter is 0.5-5 mu m, and the thickness is 0.8-1.2 nm; the glass fiber is alkali-free glass fiber, the average diameter is 9 mu m, and the length-diameter ratio is 30:1.
The preparation method of the modified PET plastic comprises the following steps: uniformly mixing the raw materials in parts by weight to obtain a mixed material, and then adding the mixed material into a double-screw extruder for extrusion molding to obtain modified PET plastic; the temperature of the double-screw extruder is 285 ℃ during extrusion molding, and the screw rotating speed is 360r/min.
Comparative example 1
A modified PET plastic substantially the same as example 1 except that (3, 6-diaminoacridin-9-yl) boric acid and amino-a-cyclodextrin were not added.
Comparative example 2
A modified PET plastic was substantially the same as in example 1, except that benzidine disulfonic acid and graphene oxide were not added.
In order to further illustrate the unexpected positive technical effects obtained by the products of the embodiments of the present invention, the modified PET plastics prepared by the embodiments were subjected to the relevant performance test, the test results are shown in table 1, and the test method is as follows: tensile strength is tested by referring to GB/T1040.1-2018; performing flame retardance evaluation grading by referring to UL 94; the thermal aging resistance is that each product is put into hot air of 85 ℃ for artificial accelerated aging for 100 hours, then cooled to room temperature, and the tensile property test is carried out again, and the retention rate of the tensile strength is calculated, and the thermal aging resistance is better as the value is larger. Heat distortion temperature testing was performed using ASTM D648-07; notched impact strength was measured using ASTM D256-97.
As can be seen from table 1, the modified PET plastics disclosed in the examples of the present invention have more excellent mechanical properties, flame retardancy, thermal aging resistance, high temperature resistance and toughness than the comparative example products, and the addition of (3, 6-diaminoacridin-9-yl) boric acid, amino-a-cyclodextrin, benzidine disulfonic acid and graphene oxide is beneficial for improving the above properties.
TABLE 1
| Project | Tensile Strength | Flame retardancy | Thermal aging resistance | Heat distortion temperature | Notched impact Strength |
| Unit (B) | MPa | Stage | ％ | ℃ | KJ/m2 |
| Example 1 | 153 | V-0 | 99.38 | 266 | 12.1 |
| Example 2 | 155 | V-0 | 99.50 | 270 | 12.6 |
| Example 3 | 158 | V-0 | 99.68 | 276 | 12.9 |
| Example 4 | 163 | V-0 | 99.90 | 279 | 13.1 |
| Example 5 | 165 | V-0 | 99.97 | 284 | 13.5 |
| Comparative example 1 | 128 | V-1 | 96.54 | 248 | 10.6 |
| Comparative example 2 | 115 | V-1 | 95.07 | 235 | 9.4 |
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way; those of ordinary skill in the art will readily implement the invention as described above; however, those skilled in the art should not depart from the scope of the invention, and make various changes, modifications and adaptations of the invention using the principles disclosed above; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (9)
1. The modified PET plastic is characterized by being prepared from the following raw materials in parts by weight: 65-75 parts of PET resin, 20-30 parts of hyperbranched polyetherimide epoxy compound, 3-5 parts of benzidine disulfonic acid, 0.3-0.5 part of phosphorus oxide-free, 0.1-0.2 part of polyphosphoric acid, 1-3 parts of coupling agent, 0.6-1.2 parts of antioxidant, 0.8-1.6 parts of lubricant, 3-5 parts of graphene oxide, 6-8 parts of amino-alpha-cyclodextrin, 10-20 parts of glass fiber and 1-2 parts of (3, 6-diaminoacridine-9-yl) boric acid.
2. The modified PET plastic of claim 1, wherein the PET resin is at least one of a Xiamen tenglong DSR TL-103PET resin, a PET008L resin manufactured by Aclo Compounders company, canada, and a hainan Yisheng petrochemical YS-W01 PET resin, china.
3. The modified PET plastic of claim 1, wherein the coupling agent is at least one of a silane coupling agent KH550, a silane coupling agent KH560, and a silane coupling agent KH 570.
4. The modified PET plastic of claim 1, wherein the antioxidant is at least one of antioxidant 1010, antioxidant 1076, and antioxidant 168.
5. The modified PET plastic of claim 1, wherein the lubricant is at least one of pentaerythritol stearate, ethylene bis stearamide.
6. The modified PET plastic of claim 1, wherein the graphene oxide is a single-layer graphene oxide having a sheet diameter of 0.5-5 μm and a thickness of 0.8-1.2 nm.
7. The modified PET plastic of claim 1, wherein the glass fibers are alkali-free glass fibers having an average diameter of 3 to 9 μm and an aspect ratio of (20 to 30): 1.
8. A process for the preparation of a modified PET plastic as claimed in any one of claims 1 to 7, comprising the steps of: and uniformly mixing the raw materials in parts by weight to obtain a mixed material, and then adding the mixed material into a double-screw extruder for extrusion molding to obtain the modified PET plastic.
9. The process for producing a modified PET plastic according to claim 8, wherein the twin-screw extruder is operated at a temperature of 260 to 285℃and a screw speed of 280 to 360r/min during extrusion molding.
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