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High heat resistant and toughened heat conduction PA66 material and preparation method thereof

A PA66 and toughening technology, which is applied in the field of high heat resistance and toughening thermal conductivity PA66 material and its preparation, can solve the problem of heat dissipation of thermal interface materials, difficulty in meeting the requirements for thermal conductivity, and heat resistance. Insufficient and other problems, to achieve the effect of preventing decomposition and aging, excellent mechanical properties, and improving weather resistance

Inactive Publication Date: 2019-10-08
NANTONG KEPOLY ENG PLASTICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal conductivity of ordinary nylon materials is only 0.30W / m·K, which cannot meet the heat dissipation requirements of thermal interface materials.
Although high-temperature-resistant nylon has excellent heat resistance, compared with metal materials, its thermal conductivity is difficult to meet the requirements in practical applications, which greatly limits its use in many fields such as civil electronic appliances, toys, communications, cables, Military industry and other parts that need to have certain heat conduction or heat dissipation functions
[0003] The heat resistance of nylon composite materials in the prior art is insufficient, and the problem of stress cracking is easy to occur due to high brittleness

Method used

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  • High heat resistant and toughened heat conduction PA66 material and preparation method thereof
  • High heat resistant and toughened heat conduction PA66 material and preparation method thereof
  • High heat resistant and toughened heat conduction PA66 material and preparation method thereof

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preparation example Construction

[0033] A preparation method of a high heat-resistant toughened type thermally conductive PA66 material, wherein the preparation method comprises the following steps:

[0034] 1) PA66, SEBS, ethylene bis stearamide, octyl epoxy tall oleate, titanium boride, tantalum carbide, polyvinyl acetate, polyvinyl butyral, zinc ethyl phenyl dithiocarbamate , N, N-bis(2,4-diiminodiphenyl ether) imine, di-n-octyltin maleate, di-n-octyltin maleate, tetrafluoroethylene-perfluoro(vinyl polyalkoxy sulfonic acid base) ether copolymer and isopropyl titanate triisostearate were stirred and mixed to obtain the first mixture; 2) the first mixture was added from the main feeding port of the twin-screw extruder, and the polybenzimidazole fiber was made of glass fiber Add it through the mouth, control the rotation speed at 800-1200r / min, and the temperature at 265-285°C, and carry out extrusion granulation to obtain PA66.

Embodiment 1

[0037] A high heat-resistant and toughened thermally conductive PA66 material, comprising the following materials by weight:

[0038]

[0039]

[0040] Fillers include 60wt% titanium boride and 40wt% tantalum carbide; tougheners include 60wt% polyvinyl acetate and 40wt% polyvinyl butyral; antioxidants include 20wt% zinc ethyl phenyl dithiocarbamate and 80wt% %N,N-bis(2,4-diiminodiphenyl ether) imine; the number average molecular weight of tetrafluoroethylene-perfluoro(vinyl polyalkoxy sulfonic acid group) ether copolymer is 3600; boronation The particle size of titanium and tantalum carbide is 70nm.

[0041] A method for preparing a high heat-resistant and toughened thermally conductive PA66 material, the preparation method comprising the following steps:

[0042] 1) PA66, SEBS, ethylene bis stearamide, octyl epoxy tall oleate, titanium boride, tantalum carbide, polyvinyl acetate, polyvinyl butyral, zinc ethyl phenyl dithiocarbamate , N, N-bis(2,4-diiminodiphenyl ether) ...

Embodiment 2

[0044] A high heat-resistant and toughened thermally conductive PA66 material, comprising the following materials by weight:

[0045]

[0046] Fillers include 65wt% titanium boride and 35wt% tantalum carbide; tougheners include 64wt% polyvinyl acetate and 36wt% polyvinyl butyral; antioxidants include 26wt% zinc ethyl phenyl dithiocarbamate and 74wt% %N,N-bis(2,4-diiminodiphenyl ether) imine; the number average molecular weight of tetrafluoroethylene-perfluoro(vinyl polyalkoxy sulfonic acid group) ether copolymer is 4000; boronation The particle size of titanium and tantalum carbide is 80nm.

[0047] A method for preparing a high heat-resistant and toughened thermally conductive PA66 material, the preparation method comprising the following steps:

[0048] 1) PA66, SEBS, ethylene bis stearamide, octyl epoxy tall oleate, titanium boride, tantalum carbide, polyvinyl acetate, polyvinyl butyral, zinc ethyl phenyl dithiocarbamate , N, N-bis(2,4-diiminodiphenyl ether) imine, di-...

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Abstract

The invention discloses a high heat resistant and toughed heat conduction PA66 material. The high heat resistant and toughened heat conduction PA66 material comprises, by weight, 60-80 parts of PA66,15-20 parts of polybenzimidazole fiber, 4-7 parts of SEBS, 11-14 parts of a filler, 2-7 parts of a flexiblizer, 1-3 parts of an antioxygen, 0.5-1 part of ethylene distearamide and 1-3 parts of epoxy tol oleate octyl ester. The high heat resistant and toughened heat conduction PA66 material has excellent mechanical properties, heat resistance and heat conduction through optimization of chemical composition of the material and improvement of the internal structure of PBT (polybutylene terephthalate) plastic to microscope extent.

Description

technical field [0001] The invention relates to a plastic, in particular to a high heat-resistant and toughened heat-conducting PA66 material and a preparation method thereof. Background technique [0002] LED lighting technology meets people's needs for energy saving and emission reduction, so it has been widely used in the global lighting industry in recent years. However, the existing LED products often have the problem of higher operating temperature and shorter product life, which puts forward high requirements on the overall heat dissipation capacity of the part. It is particularly important to choose a thermal interface material with good thermal conductivity and high temperature resistance. Nylon is one of the five major engineering plastics. It has excellent mechanical properties, wear resistance, thermal stability and fatigue resistance, and is widely used in automobiles, electrical appliances, mechanical parts and other fields. The thermal conductivity of ordina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C08L79/04C08L53/02C08L31/04C08L29/14C08L27/18C08K3/38C08K3/14C08K5/1515C08K5/39C08K5/57C08K5/18
CPCC08L77/06C08L2201/08C08L2205/035C08L2205/16C08L79/04C08L53/025C08L31/04C08L29/14C08L27/18C08K3/38C08K3/14C08K5/1515C08K5/39C08K5/57C08K5/18
Inventor 盛高飞李二响吴金华
Owner NANTONG KEPOLY ENG PLASTICS CO LTD
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