Nylon 66 composite material with high heat conductivity and preparation method thereof

A composite material and high thermal conductivity technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve problems such as limited applications

Active Publication Date: 2012-04-11
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thermal conductivity of nylon 66 is generally 0.25W (m K) -1 , which limits its application in the fields of heat dissipation and heat conduction

Method used

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  • Nylon 66 composite material with high heat conductivity and preparation method thereof
  • Nylon 66 composite material with high heat conductivity and preparation method thereof
  • Nylon 66 composite material with high heat conductivity and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Raw materials are prepared according to the following weight percentages of raw materials:

[0019]

[0020] Its preparation steps are as follows:

[0021] 1) Thermally conductive filler treatment

[0022] Dissolve nylon 66 in 85% formic acid aqueous solution and bake in an oven at 80°C for 2 to 3 hours. The purpose is to increase the solubility of nylon 66 and completely dissolve nylon 66. After the solvent completely dissolves the nylon 66, add the thermally conductive filler boron nitride into the nylon 66 solution, let the thermally conductive filler and the nylon 66 solution mix fully, then put it in an oven at 80°C for 6 to 8 hours, the purpose is to remove the dissolved Solvent for Nylon 66. After it is dried to constant weight, it is taken out and crushed into a fine powder of 100-500 mesh. Then wash the residual solvent in the fine powder with absolute ethanol. After cleaning the residual solvent, put it into an oven at 80°C for 4-6 hours, the purpose is...

Embodiment 2

[0026] Raw materials are prepared according to the following weight percentages of raw materials:

[0027]

[0028] Its preparation steps are as follows:

[0029] 1) Thermally conductive filler treatment

[0030] Dissolve nylon 66 in 20% calcium chloride aqueous solution and bake in an oven at 80°C for 2 to 3 hours. The purpose is to increase the solubility of nylon 66 and completely dissolve nylon 66. After the nylon 66 is completely dissolved by the solvent, add the thermally conductive filler silicon carbide into the nylon 66 solution, let the thermally conductive filler and the nylon 66 dissolved mixture be fully mixed, and then put it in an oven at 80°C for 6 to 8 hours. The purpose is to remove the dissolved nylon. 66 solvent. After it is dried to constant weight, it is taken out and crushed into a fine powder of 100-500 mesh. Then wash the residual solvent in the fine powder with absolute ethanol. After cleaning the residual solvent, put it into an oven at 80°C f...

Embodiment 3

[0034] Raw materials are prepared according to the following weight percentages of raw materials:

[0035] its system The preparation steps are as follows:

[0036] 1) Thermally conductive filler treatment

[0037] Dissolve nylon 66 in dimethylformamide and bake in an oven at 80°C for 2 to 3 hours. The purpose is to increase the solubility of nylon 66 and completely dissolve nylon 66. After the solvent completely dissolves the nylon 66, add the thermally conductive filler composed of aluminum nitride and aluminum oxide each accounting for 50% by weight to the nylon 66 solution, let the thermally conductive filler and the nylon 66 dissolved mixture be fully mixed, and then put Bake in an oven at 80°C for 6 to 8 hours, the purpose of which is to remove the solvent that dissolves nylon 66. After it is dried to constant weight, it is taken out and crushed into a fine powder of 100-500 mesh. Then wash the residual solvent in the fine powder with absolute ethanol. After cleani...

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PUM

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Abstract

The invention discloses a nylon 66 composite material with high heat conductivity, comprising the following substances based on weight percentages: 70-42% of nylon 66, 27-55% of heat conduction filler, 0.5-1.5% of coupling agent and 0.5-1.5% of anti-oxidant. In addition, the invention also discloses a preparation method for the nylon 66 composite material with high heat conductivity, wherein the method adds a processing step on the heat conduction filler based on the conventional method. The nylon 66 composite materials with high heat conductivity prepared by the invention can better keep themechanical property of the nylon 66 composite material and largely raise the heat conductivity at the same time. In comparison with the heat conductivity of the nylon 66 composite material prepared from the heat conduction filler without processing, the heat conductivity of the nylon 66 composite material prepared from the processed heat conduction filler is raised by about 30-50%.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a high thermal conductivity nylon 66 composite material and a preparation method thereof. Background technique [0002] At present, domestic research reports on thermally conductive composite materials in different fields are mostly thermally conductive adhesives, thermally conductive rubber, and thermally conductive potting materials. The research on high thermally conductive plastic materials is mainly based on PE, PP, and epoxy resin. There are few research and patent reports on thermoplastic engineering plastics. At the same time, domestic research on high thermal conductivity plastics mainly uses methods such as powder mixing, solution mixing, grinding mixing and molding. Because it is difficult to solve the problem of the dispersion of thermally conductive fillers in the preparation of thermally conductive composite materials by the melt extrusion meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/06C09K5/14C08K13/06C08K9/10C08K3/38C08K3/34C08K3/28C08K3/22B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 刘涛王宪忠余雪江芦艾余凤湄贺江平孙素明朱敬芝刘天利
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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