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High-heat conduction wear-resistant high-temperature resistant composite material and preparation method thereof

A composite material and high temperature resistant technology, applied in heat exchange materials, chemical instruments and methods, etc., can solve the problems of low thermal conductivity and reduce other properties of polymer materials, achieve low thermal conductivity, improve thermal conductivity and mechanical properties. , Excellent waterproof and impermeability

Inactive Publication Date: 2018-11-16
WUHU YUANKUI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional thermally conductive composite materials generally use Si3N4, SiN, AlN and BN as thermally conductive fillers, but because of their low thermal conductivity, high thermal conductivity can only be achieved with high additions, but this will inevitably reduce the high thermal conductivity. Other properties of the molecular material itself

Method used

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  • High-heat conduction wear-resistant high-temperature resistant composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of modified graphene comprises the following steps:

[0032] 1) graphene is added in the ethanol solution of pimelic acid and carried out ultrasonic dispersion, obtains the alcohol dispersion liquid of carboxylated graphene;

[0033] 2) Add sodium metaaluminate to the alcohol dispersion of carboxylated graphene, then carry out stirring reaction, centrifuge after the reaction finishes, obtain filtrate;

[0034] 3) Heat the filtrate to 400°C at a heating rate of 1°C / min under a nitrogen atmosphere, and keep it warm for 3 hours. The mass ratio of graphene to pimelic acid is 1:6, and the mass ratio of graphene to sodium metaaluminate is 1:3.

[0035] The preparation method of modified calcium sulfate whisker comprises the following steps:

[0036] Add calcium sulfate whiskers and zinc sulfate to acetone, carry out ultrasonic dispersion to obtain a dispersion liquid, raise the temperature of the dispersion liquid to 70°C, then add aluminate coupling ...

Embodiment 2

[0038] The preparation method of modified graphene comprises the following steps:

[0039] 1) graphene is added in the propanol solution of pimelic acid and carries out ultrasonic dispersion, obtains the alcohol dispersion liquid of carboxylated graphene;

[0040] 2) Add sodium metaaluminate to the alcohol dispersion of carboxylated graphene, then carry out stirring reaction, centrifuge after the reaction finishes, obtain filtrate;

[0041] 3) Heat the filtrate to 600°C at a heating rate of 5°C / min under nitrogen atmosphere, and keep it warm for 1h. The mass ratio of graphene to pimelic acid is 1:2, and the mass ratio of graphene to sodium metaaluminate is 1:7.

[0042] The preparation method of modified calcium sulfate whisker comprises the following steps:

[0043] Add calcium sulfate whiskers and zinc sulfate to acetone, carry out ultrasonic dispersion to obtain a dispersion liquid, heat the dispersion liquid to 80°C, then add aluminate coupling agent for ultrasonic vibra...

Embodiment 3

[0045] A high thermal conductivity, wear-resistant and high-temperature resistant composite material, calculated in parts by weight, includes the following raw materials:

[0046] 70 parts of nylon, 14 parts of silicone modified polyester acrylate, 2 parts of modified calcium sulfate whiskers of Example 1, 7 parts of magnesium oxide, 24 parts of modified graphene of Example 1, maleic anhydride grafted ethylene - 6 parts of octene copolymer, 1.2 parts of styrene-maleic anhydride copolymer, 0.4 part of polyethylene wax and 0.4 part of hindered phenolic antioxidant.

[0047] Preparation method of high thermal conductivity, wear-resistant and high-temperature resistant composite material:

[0048] 1) Nylon, maleic anhydride grafted ethylene-octene copolymer, magnesium oxide and the modified graphene in Example 1 were mixed and stirred evenly, then added to a twin-screw extruder, and extruded at 260°C Granulating to obtain thermally conductive nylon masterbatch;

[0049] 2) The h...

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Abstract

The invention provides a high-heat conduction wear-resistant high-temperature resistant composite material and a preparation method thereof. The high-heat conduction wear-resistant high-temperature resistant composite material comprises the following raw materials in parts by weight: 60-80 parts of nylon, 10-20 parts of organosilicon-modified polyester acrylate, 1-3 parts of modified calcium sulfate whisker, 5-10 parts of magnesium oxide, 20-30 parts of modified graphene, 4-8 parts of a flexibilizer, 0.6-1.8 parts of a compatilizer, 0.2-0.6 parts of a lubricant, and 0.2-0.6 parts of an anti-oxidant. The modified graphene is mainly prepared by graphene, pimelic acid and sodium meta aluminate, and the modified calcium sulfate whisker is mainly prepared by the calcium sulfate whisker, zinc sulfate and an aluminate coupling agent. The preparation method is characterized in that the above raw materials are mixed by batches and are subjected to twin-screw extruded granulation. The nylon composite material has good heat conduction effect, high temperature resistance and antifriction performance, and other excellent mechanical properties.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a composite material with high thermal conductivity, wear resistance and high temperature resistance and a preparation method thereof. Background technique [0002] Nylon has excellent comprehensive properties such as good mechanical properties, good flexibility, wear resistance, oil resistance, self-lubrication, etc., and is widely used in the fields of automobile industry, electronic and electrical industry, mechanical equipment, construction industry and so on. Due to its advantages of short processing cycle, low production cost, long service life and high degree of product design freedom, it has been more and more widely used. In recent years, its application in thermal conductive polymer composite materials is particularly prominent. For example, DSM produces The high-power LED radiator has been generally recognized by the market. [0003] Thermally co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08L67/06C08L51/06C08K13/06C08K3/22C08K3/04C08K9/04C08K9/02C08K7/08C09K5/14
CPCC08K2003/222C08L77/00C08L2201/08C08L2205/035C09K5/14C08L67/06C08L51/06C08K13/06C08K3/22C08K3/042C08K9/04C08K9/02C08K7/08
Inventor 章波郭元
Owner WUHU YUANKUI NEW MATERIAL TECH CO LTD
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