CN114561090A - Brominated flame-retardant reinforced polyethylene glycol terephthalate composition with easy demolding and high glow wire performance as well as preparation method and application thereof - Google Patents
Brominated flame-retardant reinforced polyethylene glycol terephthalate composition with easy demolding and high glow wire performance as well as preparation method and application thereof Download PDFInfo
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- CN114561090A CN114561090A CN202210225789.5A CN202210225789A CN114561090A CN 114561090 A CN114561090 A CN 114561090A CN 202210225789 A CN202210225789 A CN 202210225789A CN 114561090 A CN114561090 A CN 114561090A
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- 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 class 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 title claims abstract description 39
- 239000000203 mixture Substances 0.000 title claims abstract description 33
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000002202 Polyethylene glycol Substances 0.000 title description 4
- 229920001223 polyethylene glycol Polymers 0.000 title description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 title description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 59
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 59
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 31
- 239000003063 flame retardant Substances 0.000 claims abstract description 24
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 16
- 238000002425 crystallisation Methods 0.000 claims abstract description 15
- 230000008025 crystallization Effects 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 239000002667 nucleating agent Substances 0.000 claims abstract description 11
- 239000004209 oxidized polyethylene wax Substances 0.000 claims abstract description 10
- 235000013873 oxidized polyethylene wax Nutrition 0.000 claims abstract description 10
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 239000003963 antioxidant agent Substances 0.000 claims description 5
- 230000003078 antioxidant effect Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000012745 toughening agent Substances 0.000 claims description 4
- BZQKBFHEWDPQHD-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[2-(2,3,4,5,6-pentabromophenyl)ethyl]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1CCC1=C(Br)C(Br)=C(Br)C(Br)=C1Br BZQKBFHEWDPQHD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000005469 granulation Methods 0.000 claims description 3
- 230000003179 granulation Effects 0.000 claims description 3
- 239000011256 inorganic filler Substances 0.000 claims description 3
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- BMENBXQCFCSBAQ-UHFFFAOYSA-N sodium;oxido(dioxo)-$l^{5}-stibane Chemical group [Na+].[O-][Sb](=O)=O BMENBXQCFCSBAQ-UHFFFAOYSA-N 0.000 claims description 3
- NSBGJRFJIJFMGW-UHFFFAOYSA-N trisodium;stiborate Chemical group [Na+].[Na+].[Na+].[O-][Sb]([O-])([O-])=O NSBGJRFJIJFMGW-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 12
- 239000003365 glass fiber Substances 0.000 abstract description 6
- 230000000052 comparative effect Effects 0.000 description 24
- 238000012360 testing method Methods 0.000 description 12
- 239000000126 substance Substances 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical class C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011056 performance test 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
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- CIWAOCMKRKRDME-UHFFFAOYSA-N tetrasodium dioxido-oxo-stibonatooxy-lambda5-stibane Chemical compound [Na+].[Na+].[Na+].[Na+].[O-][Sb]([O-])(=O)O[Sb]([O-])([O-])=O CIWAOCMKRKRDME-UHFFFAOYSA-N 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/24—Crystallisation aids
Abstract
The invention discloses a brominated flame-retardant reinforced polyethylene terephthalate (PET) composition with easy demoulding and high glow wire performance, and a preparation method and application thereof. The PET composition comprises the following components: 100 parts of PET resin, 25-35 parts of brominated flame retardant, 0.5-1.2 parts of flame-retardant synergist, 5-10 parts of Melamine Cyanurate (MCA), 3-6 parts of composite master batch, 30-80 parts of glass fiber and 1-3 parts of oxidized polyethylene wax. The intrinsic viscosity of the PET resin is 0.52-0.85. The composite master batch takes polyethylene as a carrier, and comprises the components of a nucleating agent and a crystallization promoter. The PET composition greatly improves the crystallization and demolding performance of PET materials, and has excellent glow wire performance.
Description
Technical Field
The invention relates to the field of modification and forming processing of high-molecular engineering plastics, in particular to a brominated flame-retardant reinforced polyethylene glycol terephthalate composition with easy demoulding and high glow wire performance, and a preparation method and application thereof.
Background
Polyethylene terephthalate (PET) is used as an engineering plastic with excellent electrical performance and is widely applied to electronic and electrical products such as coil frameworks, motor shells, relay shells and the like. However, PET has problems of poor crystallization property, difficult demoulding and the like, and limits the application in fields with higher molding requirements. Meanwhile, according to the relevant standard of IEC, the glow wire has to have higher glow wire performance for household electrical appliances which are unattended and have rated current of more than 0.2A.
The prior art discloses a PET composition containing PET resin, glass fiber, brominated epoxy resin, sodium antimonate and MCA master batch, but the glow wire GWIT of the PET composition can only reach 850 ℃/2.0mm at most, and cannot meet the requirement of the market on higher performance of the glow wire, so that the development of a PET composition with higher performance of the glow wire and easy demoulding is urgently needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a brominated flame-retardant reinforced polyethylene terephthalate (PET) composition with easy demoulding and high glowing filament performance, and a preparation method and application thereof.
The invention provides a brominated flame-retardant reinforced polyethylene glycol terephthalate composition with easy demoulding and high glow wire performance, which comprises the following components:
the composite master batch is a composite master batch taking polyethylene as a carrier, and comprises the components of a nucleating agent and a crystallization promoter. The nucleating agent is sodium carboxylate, and the crystallization accelerator is liquid pentaerythritol. The weight percentage of the polyethylene is 40-60%, the weight percentage of the nucleating agent is 5-10%, and the weight percentage of the accelerator is 35-55%. Polyethylene (PE) is used as a carrier and can play a certain toughening role. The nucleating agent in the composite master batch can form more crystal nuclei more quickly in the cooling process of PET, and meanwhile, the crystallization accelerator can accelerate the movement of a molecular chain and promote the growth of crystal grains, so that the aim of promoting the quick cooling crystallization of PET is fulfilled.
Further, the intrinsic viscosity of the PET resin is 0.52 to 0.85dL/g, preferably 0.58 to 0.8 dL/g. The test standard for intrinsic viscosity is ASTM D4603-2003 (2011). If the intrinsic viscosity of the PET resin is higher than the above range, the flowability is poor and the crystallization property is poor; below the above range, the resulting PET composition has insufficient toughness and is liable to suffer from mold deposit.
Furthermore, the bromine flame retardant is any one or more of brominated epoxy resin, brominated polystyrene and decabromodiphenylethane.
Further, the flame retardant synergist is sodium antimonate, preferably sodium meta-antimonate.
Further, the oxidized polyethylene wax is low-density oxidized polyethylene wax. The low-density polyethylene molecular chain is more flexible, and the lubricating effect is better. And the melting point is about 100 ℃, which is beneficial to reducing the cold crystallization of PET.
Further, the polyethylene terephthalate composition also comprises any one or more of a toughening agent, an inorganic filler, an antioxidant and a weather resisting agent. The toughening agent is a copolymer or graft containing GMA groups, the inorganic filler is any one of mica powder, talcum powder, calcium carbonate and barium sulfate, the antioxidant is a hindered phenol antioxidant and a phosphate auxiliary antioxidant, and the weather-resistant agent is a hindered amine weather-resistant agent.
The invention also provides a preparation method of the polyethylene terephthalate composition, which comprises the following steps: weighing the raw materials according to the weight parts, mixing the raw materials in a high-speed mixer for 1-2 minutes to obtain a premix, and performing melt extrusion, cooling and granulation on the premix at 180-270 ℃ by using a double-screw extruder to obtain the polyethylene terephthalate composition; the temperature of each screw cylinder from the charging opening to the machine head of the double-screw extruder is respectively as follows: 180-210 ℃, 250-260 ℃, 250-270 ℃, 2200-240 ℃, 220-240 ℃, 230-250 ℃, the rotation speed of the screw is 300-350 r/min, the feeding amount is 60-200 kg/h, and the vacuum degree is-0.1-0 MPa.
The invention also provides application of the polyethylene terephthalate composition in preparation of household appliances, electronic and electrical components and office equipment.
In summary, compared with the prior art, the invention achieves the following technical effects:
according to the invention, by adding the composite master batch and the oxidized polyethylene wax and searching various formulas, the crystallization and demolding of the PET material are greatly improved, the material has excellent glowing filament performance, the V-0 flame retardant grade can be achieved, and the notch impact strength can reach 7.5KJ/M at most2The glow wire GWIT can reach 960 ℃/2.0mm at most.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
The key point of the technical scheme is that a brominated flame retardant reinforced PET product with good demolding performance and glow wire performance is obtained by reasonably matching the brominated flame retardant, the flame-retardant synergist, the MCA and the composite master batch. The defect of low crystallization speed of the PET material can be improved by adding the composite master batch, and the demolding property of the material is greatly improved under the condition that a nucleating agent is matched as a lubricant. By controlling the addition amounts of the flame retardant, the synergistic flame retardant and the MCA, the glowing filament performance of the material is greatly improved under the condition of meeting the flame retardance V-0.
Examples
The present invention will be further illustrated by the following specific examples and comparative examples, which are preferred embodiments of the present invention, but the present invention is not limited to the following examples, and is not particularly limited to the types of raw materials of the components used in the following specific examples.
The starting materials in the examples and comparative examples are commercially available as follows:
PET resin # 1: intrinsic viscosity 0.68dL/g, PET FG600, standard chemical fiber.
PET resin # 2: intrinsic viscosity 0.8dL/g, PET BG80 trade mark, standard chemical fiber.
PET resin # 3: intrinsic viscosity 0.9dL/g, EP901, standard chemical fiber.
PET resin # 4: intrinsic viscosity of 0.58dL/g, CR-7702, Huarun chemical materials science and technology Limited.
Brominated flame retardants: brominated flame retardants such as brominated epoxy resins, brominated polystyrene, and decabromodiphenylethane, are used in this example under the brand name F-2100, Iselici.
Synergistic flame retardant # 1: sodium meta-antimonate, brand SA-F, was obtained from Chengdu.
Synergistic flame retardant # 2: sodium pyroantimonate, new shouAnte material.
Melamine Cyanurate (MCA): the mark is MCA-A, Sichuan fine chemical engineering.
Glass fiber: alkali-free glass fiber, the trade mark is ECS11-4.5-534A, China megalite.
Low density oxidized polyethylene wax, available under the trade designation PED-521, kraine, germany.
High-density oxidized polyethylene wax with the mark of 316A, Kain chemical engineering.
Compound master batch: 50 percent of polyethylene, 8 percent of nucleating agent and 42 percent of accelerator, such as Xiasai material.
A toughening agent: under the designation PTW, dow elastomer.
Reagents, methods and apparatus used in the present invention are conventional in the art unless otherwise indicated.
Weighing the raw materials according to the formula dosage of specific examples 1-12 in Table 1 and comparative examples 1-10 in Table 2, mixing the raw materials in a high-speed mixer for 1-2 minutes to obtain a premix, and performing melt extrusion, cooling and granulation on the premix at 180-270 ℃ by using a double-screw extruder to obtain the polyethylene terephthalate composition; the temperature of each screw cylinder from the charging opening to the machine head of the double-screw extruder is respectively as follows: 180-210 ℃, 250-260 ℃, 250-270 ℃, 2200-240 ℃, 220-240 ℃, 230-250 ℃, the rotation speed of the screw is 300-350 r/min, the feeding amount is 60-200 kg/h, and the vacuum degree is-0.1-0 MPa. The PET compositions prepared in examples 1-12 and comparative examples 1-10 were tested for mold release performance, flame retardancy, glow wire performance and mechanical properties. The test results are shown in tables 3 and 4.
The performance test method comprises the following steps:
(1) evaluation of mold releasability: and evaluating an injection molding method, designing a set of relay shell mold with the wall thickness of 0.8mm to mold 32 products, setting the same injection molding process and cooling time, and judging whether the demolding performance is good or bad according to whether the product is stuck or cracked during ejection. The product can smoothly support demoulding, which means that the demoulding performance is good, otherwise, the product is adhered to a mould, or the surface of the product is provided with dents or cracks ejected by ejector pins, which means that the demoulding performance is poor;
(2) flame retardance: testing a flame retardant rating of 0.8mm v-0 according to UL 94;
(3) glow wire performance: testing the ignition temperature of the glow wire, wherein the wall thickness of the sample plate is 1.5mm according to IEC 60695-2-10-2013 standard;
(4) notched impact strength: tested according to the ISO 180-.
TABLE 1 proportions (parts by weight) of the components of the examples
TABLE 2 proportions (parts by weight) of the components of the comparative examples
Table 3 results of performance testing of examples
Table 4 results of performance testing of comparative examples
Comparative example 1 is a single blank control test of composite master batch CAM-6025, comparative example 2 is a high-amount comparative example of composite master batch CAM-6025 component out of range, comparative example 3 is a low-amount comparative example of composite master batch CAM-6025 component out of range, comparative example 4 is a single blank control test of oxidized polyethylene wax, comparative example 5 is a single blank control test of MCA, comparative example 6 is a low-amount comparative example of MCA component out of range, comparative example 7 is a low-amount comparative example of bromine-based flame retardant component out of range, comparative example 8 is a high-amount comparative example of bromine-based flame retardant component out of range, comparative example 9 is a high-amount comparative example of flame retardant synergist component out of range, comparative example 10 is a single blank control test of glass fiber, the basis of the control of the above comparative examples is example 4.
Based on the test data of the demolding performance, the flame retardant performance, the mechanical property and the glow wire performance in the table 3, the brominated flame retardant reinforced polyethylene terephthalate composition with easy demolding and high glow wire performance, which is prepared in the examples 1-12, has the advantages that the GWIT temperature can reach 960 ℃/2.0mm in the glow wire test on the premise that the demolding performance, the notch impact strength and the flame retardance can meet the conditions, and compared with a comparative example, the brominated flame retardant reinforced polyethylene terephthalate composition has obvious advantages and can effectively meet the high standard requirements of customers and markets.
In conclusion, the invention discloses a brominated flame-retardant reinforced polyethylene terephthalate (PET) composition with easy demoulding and high glow wire performance, and a preparation method and application thereof. The PET composition comprises the following components: 100 parts of PET resin, 25-35 parts of brominated flame retardant, 0.5-1.2 parts of flame-retardant synergist, 5-10 parts of Melamine Cyanurate (MCA), 3-6 parts of composite master batch, 30-80 parts of glass fiber and 1-3 parts of oxidized polyethylene wax. The intrinsic viscosity of the PET resin is 0.52-0.85. The composite master batch takes polyethylene as a carrier, and comprises the components of a nucleating agent and a crystallization promoter. The key point of the technical scheme is that a brominated flame retardant reinforced PET product with good demolding performance and glow wire performance is obtained by reasonably matching the brominated flame retardant, the flame-retardant synergist, the MCA and the composite master batch. The defect of slow crystallization speed of the PET material can be improved by adding the composite master batch, and the demolding property of the material is greatly improved under the condition of matching with a nucleating agent as a lubricant. By controlling the addition amounts of the flame retardant, the synergistic flame retardant and the MCA, the glow wire performance of the material is greatly improved under the condition of meeting the flame retardant V-0. The notch impact strength can reach 7.5KJ/M at most when the V-0 flame retardant grade can be reached2The glow wire GWIT can reach 960 ℃/2.0mm at most, and can be widely appliedIt is used in household appliance.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The brominated flame-retardant reinforced polyethylene terephthalate composition with easy demoulding and high glow wire performance is characterized by comprising the following components:
the composite master batch takes polyethylene as a carrier, comprises a nucleating agent and a crystallization accelerator, wherein the nucleating agent is sodium carboxylate, and the crystallization accelerator is liquid pentaerythritol.
2. The polyethylene terephthalate composition of claim 1, wherein the PET resin has an intrinsic viscosity of 0.52 to 0.85 dL/g.
3. The polyethylene terephthalate composition of claim 2, wherein the PET resin has an intrinsic viscosity of 0.58 to 0.8 dL/g.
4. The polyethylene terephthalate composition according to claim 1, wherein the brominated flame retardant is any one or more of brominated epoxy resin, brominated polystyrene, and decabromodiphenylethane.
5. The polyethylene terephthalate composition of claim 1, wherein the flame retardant synergist is sodium antimonate.
6. The polyethylene terephthalate composition of claim 1, wherein the flame retardant synergist is sodium meta-antimonate.
7. The polyethylene terephthalate composition of claim 1, wherein the oxidized polyethylene wax is a low density oxidized polyethylene wax.
8. The polyethylene terephthalate composition according to claim 1, further comprising one or more of a toughening agent, an inorganic filler, an antioxidant, and a weather resistance agent.
9. The method for preparing a polyethylene terephthalate composition according to any of claims 1 to 8, comprising the steps of:
weighing the raw materials according to the weight parts, mixing the raw materials in a high-speed mixer for 1-2 minutes to obtain a premix, and performing melt extrusion, cooling and granulation on the premix at 180-270 ℃ by using a double-screw extruder to obtain the polyethylene terephthalate composition; the temperature of each screw cylinder from the charging opening to the machine head of the double-screw extruder is respectively as follows: 180-210 ℃, 250-260 ℃, 250-270 ℃, 2200-240 ℃, 220-240 ℃, 230-250 ℃, the rotation speed of the screw is 300-350 r/min, the feeding amount is 60-200 kg/h, and the vacuum degree is-0.1-0 MPa.
10. Use of the polyethylene terephthalate composition according to any one of claims 1 to 8 for the preparation of household electrical appliances, electronic and electrical components, office equipment.
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|---|---|---|---|
| CN202210225789.5A CN114561090B (en) | 2022-03-07 | 2022-03-07 | Brominated flame-retardant reinforced polyethylene terephthalate composition easy to mold out and high in glowing filament performance, and preparation method and application thereof |
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| CN202210225789.5A CN114561090B (en) | 2022-03-07 | 2022-03-07 | Brominated flame-retardant reinforced polyethylene terephthalate composition easy to mold out and high in glowing filament performance, and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875761A (en) * | 2010-07-14 | 2010-11-03 | 深圳市科聚新材料有限公司 | Flame-retardant strengthening polythylene terephthalate (PET) material and preparation method thereof |
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| CN102250450A (en) * | 2011-07-14 | 2011-11-23 | 金发科技股份有限公司 | Flame-retardant polyester material with high glow wire ignition temperature and preparation method thereof |
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| CN112143181A (en) * | 2020-09-24 | 2020-12-29 | 广州市聚赛龙工程塑料股份有限公司 | Highlight high glow wire reinforced flame-retardant PBT (polybutylene terephthalate) composite material as well as preparation method and application thereof |
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2022
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| CN102115579A (en) * | 2010-01-04 | 2011-07-06 | 佛山市顺德区威林工程塑料有限公司 | High-toughness high-glowing-filament-ignition-temperature flame-retardant reinforced PBT (polybutylene terephthalate) material and preparation method thereof |
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