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PBT composite material and preparation method thereof

A composite material and PBT resin technology, applied in the field of PBT composite materials and preparation, can solve the problems of affecting the mechanical properties of materials, not durable enough, and easy to fail in antistatic properties, and achieve excellent antistatic effect, good anti-warping, and good electrical conductivity. Effects of performance and mechanical properties

Inactive Publication Date: 2019-08-16
珠海格力新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antistatic performance of the former is easy to fail and not durable enough; while the latter uses traditional additives, in order to achieve the antistatic effect, too many additives affect the mechanical properties of the material, and the application is also limited.

Method used

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  • PBT composite material and preparation method thereof
  • PBT composite material and preparation method thereof
  • PBT composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh each component by weight:

[0036] PBT resin is 67g; glass fiber is 20g; modified filler is wollastonite 8g; conductive agent is graphene 1g; toughening agent is ethylene-methyl acrylate-glycidyl methacrylate terpolymer 3g; The agent is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.4g, tris(2,4-di-tert-butylphenyl) phosphite antioxidant 0.2g; lubricant is pentaerythritol stearate 0.4g, silane coupling agent KH5700.32g, stearic acid 0.32g.

[0037] Among them, wollastonite is pre-surface-treated by silane coupling agent and stearic acid. The specific treatment method is: after dissolving and diluting the silane coupling agent with absolute ethanol, atomize and add to the wollastonite in the high-speed mixer, silane After the coupling agent is added, carry out fluidized bed drying reaction for 2 hours; then add stearic acid to carry out fluidized bed homogenization reaction, and after 1 hour of reaction, the modified spare filler can be obtained. ...

Embodiment 2

[0041]PBT resin is 64.9g; glass fiber is 25g; modified filler is whisker 4g; conductive agent is carbon nanotube 2g; toughening agent is ethylene-butyl acrylate copolymer 3g; antioxidant is β-(3,5 -Di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.4g, tris(2,4-di-tert-butylphenyl) phosphite antioxidant 0.2g; lubricant is ethylene Bis fatty acid amide 0.5g, silane coupling agent KH570 0.16g, stearic acid 0.16g.

[0042] The whiskers are pre-surface treated with silane coupling agent and stearic acid. The specific treatment method is: after dissolving and diluting the silane coupling agent with absolute ethanol, atomize and add to the whiskers in the high-speed mixer, silane coupling After the agent is added, the fluidized bed drying reaction is carried out for 2 hours; then stearic acid is added to carry out the fluidized bed homogenization reaction, and after the reaction is completed for 1 hour, the modified spare filler can be obtained. Among them, the atomization spe...

Embodiment 3

[0046] PBT resin is 59.6g; glass fiber is 30g; modified filler is wollastonite 6g; conductive agent is carbon nanotube 2.4g / graphene 0.6g; toughening agent is ethylene-methyl acrylate-glycidyl methacrylate Terpolymer 3g; antioxidant is β-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate 0.4g, tris(2,4-di-tert-butyl phosphite) phenyl) ester antioxidant 0.2g; lubricant is pentaerythritol stearate 0.5g, silane coupling agent KH570 0.24g, stearic acid 0.48g.

[0047] Among them, wollastonite is pre-surface-treated by silane coupling agent and stearic acid. The specific treatment method is: after dissolving and diluting the silane coupling agent KH570 with absolute ethanol, atomize it and add it to the wollastonite in the high-speed mixer. After adding the silane coupling agent KH570, carry out the fluidized bed drying reaction for 2 hours; then add stearic acid to carry out the fluidized bed homogenization reaction, and after the reaction is completed for 1 hour, the modi...

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Abstract

The invention discloses a PBT composite material and a preparation method thereof, and belongs to the field of high polymer materials. The composite material is prepared from the following componentsin parts by weight, 40-70 parts of PBT resin, 20-40 parts of glass fiber, 4-10 parts of a modified filler, 1-4 parts of a conductive agent, 3-4 parts of a toughening agent, 0.4-1.0 part of an antioxidant and 0.4-1.0 part of a lubricant. The conductive agent is carbon nano tube and / or graphene; and the modified filler is one or more of wollastonite, whiskers and mineral fibers, which are treated bya surfactant. The reinforced PBT prepared by the preparation method disclosed by the invention has a good anti-warping function, can meet a product with precise processing requirements, has good conductivity and mechanical properties, has an excellent antistatic effect, and can be widely applied to various products with high electrostatic requirements.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a PBT composite material and a preparation method. Background technique [0002] Polybutylene terephthalate (PBT) has high hardness, high strength, high crystallization speed and excellent chemical resistance and electrical properties. It is a thermoplastic engineering plastic with excellent performance. It is mainly used in automobiles, electronic appliances, Mechanical parts, clothing and so on. However, PBT also has disadvantages such as large crystallization shrinkage, poor dimensional stability, and notch sensitivity. After the product is made, warping often occurs. Although it can be greatly improved by adding glass fiber reinforcement, it still cannot meet the product requirements for some products with strict requirements. Moreover, the surface resistivity of its products is very high, and it is easy to generate electrostatic aggregation effect during use, which limits ...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/08C08L51/06C08K13/06C08K9/06C08K9/04C08K3/34C08K7/14C08K3/04C08K7/02C08K7/04C08J5/06C08J5/08
CPCC08J5/06C08J5/08C08J2367/02C08J2423/08C08J2451/06C08K3/34C08K7/02C08K7/04C08K7/14C08K9/04C08K9/06C08K13/06C08K2201/001C08K3/041C08K3/042
Inventor 李森刘磊张从武王琳孙鸿文郑志豪廖振程
Owner 珠海格力新材料有限公司
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