Method for preparing silicon carbide powder as organic composite material reinforcement

A silicon carbide powder, composite material technology, applied in chemical instruments and methods, dyed organic silicon compound treatment, dyed low molecular organic compound treatment and other directions, can solve the problems of poor wear resistance, poor thermal conductivity, etc., to improve Affinity, improving overall properties, improving compatibility and dispersibility

Inactive Publication Date: 2018-12-04
宁夏和兴碳基材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, organic composite materials are widely used, but due to their poor wear resistance and poor thermal conductivity, some organic composite industrial

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing silicon carbide powder as an organic composite reinforcement, comprising the following steps:

[0022] (1) Feed the SiC powder raw material with a SiC content of 98% into a ball mill with an aspect ratio of 2.5 for shaping treatment for 30 minutes, take it out, and set aside; the median particle size of the silicon carbide powder obtained after shaping is D 50 1.5 μm to 2 μm.

[0023] (2) Preheat the shaped silicon carbide powder at 60°C for 20 minutes, spray the modifier into the high-speed stirring silicon carbide powder each time in the form of mist, control the temperature at 100°C, and the stirring speed at 300r / min, each stirring and drying for 2h and standing for 20min, stirring 4 times and then drying in an oven to obtain a preliminary modified silicon carbide powder;

[0024] The modifier is a mixed solution of aminopropyltriethoxysilane, methacryloxypropyltrimethoxysilane, ethanol and water, wherein the weight percentage of each compon...

Embodiment 2

[0028] A method for preparing silicon carbide powder as an organic composite reinforcement, comprising the following steps:

[0029] (1) Feed silicon carbide powder raw materials with a SiC content of 98.5% into a ball mill with an aspect ratio of 2 for shaping treatment for 40 minutes, take it out, and set aside; the median particle size of the obtained shaped silicon carbide powder is D 50 1 μm to 1.5 μm.

[0030] (2) Preheat the shaped silicon carbide powder at 80°C for 30 minutes, spray the modifier into the high-speed stirring silicon carbide powder each time in the form of mist, control the temperature at 120°C, and the stirring speed at 600r / min, each stirring and drying for 3h and standing for 30min, stirring 4 times and then drying in an oven to obtain a preliminary modified silicon carbide powder;

[0031] The modifier is a mixed solution of aminopropyltriethoxysilane, methacryloxypropyltrimethoxysilane, ethanol and water, wherein the weight percentage of each comp...

Embodiment 3

[0035] A method for preparing silicon carbide powder as an organic composite reinforcement, comprising the following steps:

[0036] (1) Feed the SiC powder raw material with a SiC content of 99% into a ball mill with an aspect ratio of 2.8 for shaping treatment for 35 minutes, take it out, and set aside; the median particle size of the silicon carbide powder obtained after shaping is D 50 1.5 μm to 2.5 μm.

[0037] (2) Preheat the shaped silicon carbide powder at 70°C for 25 minutes, spray the modifier into the high-speed stirring silicon carbide powder each time in the form of mist, control the temperature at 110°C, and stir at 450r / min, each stirring and drying for 2.5h and standing for 25min, stirring 4 times and then drying in an oven to obtain a preliminary modified silicon carbide powder;

[0038] The modifier is a mixed solution of aminopropyltriethoxysilane, methacryloxypropyltrimethoxysilane, ethanol and water, wherein the weight percentage of each component is res...

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PUM

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Abstract

The invention belongs to the technical field of inorganic material preparation, and discloses a method for preparing a silicon carbide powder as an organic composite material reinforcement. The methodcomprises the following steps: firstly feeding a silicon carbide powder raw material into a ball mill for shaping treatment; pre-heating the shaped silicon carbide powder at 60 DEG C to 80 DEG C for20 min to 30 min, and spraying a modifier into the silicon carbide powder stirred at a high speed in a mist form at a controlled temperature of 100 DEG C to 120 DEG C, performing standing for 2 h-3 hevery time after stirring and drying are carried out for 20 min-30 min, and performing stirring for 4 times, so as to obtain a preliminarily modified silicon carbide powder; and finally, dip-coating the preliminarily modified silicon carbide powder in a strengthening agent, so as to obtain a modified silicon carbide powder. The method of the invention can effectively improve the affinity of the silicon carbide powder and an organic composite material, improve the compatibility and dispersibility of the silicon carbide powder during filling, and improve the comprehensive performance of the product, and the process is simple and easy to control.

Description

technical field [0001] The invention belongs to the technical field of inorganic material preparation, and in particular relates to a method for preparing silicon carbide powder as an organic composite reinforcement. Background technique [0002] At present, organic composite materials are widely used, but due to their poor wear resistance and poor thermal conductivity, some organic composite industrial products have strict requirements for these two indicators. In order to further enhance the performance of the material, adding appropriate Reinforcement materials are imperative. [0003] Silicon carbide has excellent properties such as strong oxidation resistance, good wear resistance, high hardness, good thermal stability, high temperature strength, small thermal expansion coefficient, high thermal conductivity, thermal shock resistance and chemical corrosion resistance, and is widely used in functional Ceramics, advanced refractory materials, acting as reinforcements and...

Claims

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Application Information

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IPC IPC(8): C09C1/00C09C3/04C09C3/12C09C3/10C09C3/08
CPCC01P2004/61C09C1/00C09C3/006C09C3/041C09C3/08C09C3/10C09C3/12
Inventor 顾文华顾旭徐世杰万立斌
Owner 宁夏和兴碳基材料有限公司
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