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Method for preparing ceramic matrix diamond composite material by employing organosilicon

A ceramic matrix and composite material technology, applied in the field of superhard composite material preparation, can solve the problems of high energy consumption, complicated process, unstable product performance, etc., and achieve simple production procedures, good fluidity, liquid penetration and fluidity Effect

Inactive Publication Date: 2015-09-09
ZHONGYUAN ENGINEERING COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the present invention overcomes defects such as high energy consumption, complicated procedures, and unstable product performance in the production of ceramic matrix diamond abrasive tools by the current glass frit smelting method.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of method that adopts organic silicon to prepare ceramic matrix diamond composite material, comprises the steps:

[0025] Step 1, prepare polysiloxane complex, put 10 grams of hydrogen-containing linear polysiloxane, 5 grams of linear vinyl polysiloxane and cyclopolymer tetramethyltetravinyl polysiloxane 5 grams were mixed to obtain 20 grams of polysiloxane compound.

[0026] Step 2. Prepare a silicon-aluminum composite sol solution, mix 3 moles of aluminum source compound: 2 moles of silicon-containing compound: 120 moles of distilled water, add 3 grams of catalyst to adjust the pH value to 2.8, and react at a temperature of 65±2 °C After 2 hours, 8 g of a silica-alumina composite sol solution were obtained by polymerization.

[0027] Step 3, mix 20 grams of polysiloxane compound prepared in step 1 with 8 grams of silicon-aluminum compound sol solution prepared in step 2, and then add 0.33 grams of polysiloxane curing crosslinking agent, 5 grams of diamond, sho...

Embodiment 2

[0031] A kind of method that adopts organic silicon to prepare ceramic matrix diamond composite material, comprises the steps:

[0032] Step 1, prepare polysiloxane complex, put 10 grams of hydrogen-containing linear polysiloxane, 5 grams of linear vinyl polysiloxane and cyclopolymer tetramethyltetravinyl polysiloxane 5 grams were mixed to obtain 20 grams of polysiloxane compound.

[0033] Step 2. Prepare a silicon-aluminum composite sol solution, mix 3 moles of aluminum source compound: 2 moles of silicon-containing compound: 120 moles of distilled water, add 3 grams of catalyst to adjust the pH value to 2.8, and react at a temperature of 65±2 °C After 2 hours, polymerization was carried out to obtain 6 g of a silica-alumina composite sol solution.

[0034] Step 3, mix 20 grams of polysiloxane compound prepared in step 1 with 6 grams of silicon-aluminum compound sol solution prepared in step 2, and then add 0.30 grams of polysiloxane curing crosslinking agent, 7 grams of dia...

Embodiment 3

[0038] A kind of method that adopts organic silicon to prepare ceramic matrix diamond composite material, comprises the steps:

[0039] Step 1, prepare polysiloxane complex, put 10 grams of hydrogen-containing linear polysiloxane, 5 grams of linear vinyl polysiloxane and cyclopolymer tetramethyltetravinyl polysiloxane 5 grams were mixed to obtain 20 grams of polysiloxane compound.

[0040] Step 2. Prepare a silicon-aluminum composite sol solution, mix 3 moles of aluminum source compound: 2 moles of silicon-containing compound: 120 moles of distilled water, add 3 grams of catalyst to adjust the pH value to 2.8, and react at a temperature of 65±2 °C After 2 hours, 8 g of a silica-alumina composite sol solution were obtained by polymerization.

[0041] Step 3, mix 20 grams of polysiloxane compound prepared in step 1 with 8 grams of silicon-aluminum compound sol solution prepared in step 2, and then add 0.33 grams of polysiloxane curing crosslinking agent, 5 grams of diamond, sho...

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Abstract

The invention belongs to the technical field of preparation of a ceramic matrix diamond composite material, and specifically relates to a method for preparing the ceramic matrix diamond composite material by employing organosilicon. The ceramic matrix diamond composite material is obtained by mixing a polysiloxane compound, silicon-aluminium compound sol, a polysiloxane curing crosslinking agent, diamond, silicon carbide, and a chopped glass fiber filler according to a set mass ratio and by performing stirring, injection into a mould for gelatinization and solidification, demoulding, sinter molding, and post-treatment finishing. According to the invention, organosilicon is adopted as a precursor with the assistance of a silicon-aluminium compound sol solution. The precursor liquid is good in permeability and fluidity and is convenient for performing injection moulding of a heterotype workpiece; the production routine is simple; and a ceramic matrix in the composite material provides higher holding force to a diamond abrasive material. The prepared ceramic matrix diamond composite material is adaptable to the abrasive material of a diamond tool, or other high temperature resistant or wear-resistant functional materials.

Description

technical field [0001] The invention belongs to the technical field of superhard composite material preparation, and in particular relates to a method for preparing ceramic matrix diamond composite material by using organic silicon. Background technique [0002] Diamond is the hardest material in the world known so far, and it is an important superhard material for industrial applications. Diamond is widely used in abrasives, grinding tools and tool materials. However, diamond is mainly used in the form of composite materials, specifically, diamond is combined with a matrix such as metal, ceramics or resin to prepare a composite material. Among them, the ceramic matrix diamond composite material has developed rapidly in recent years. Taking the vitrified bonded diamond grinding wheel as an example, the vitrified bonded diamond grinding wheel is a kind of superhard material grinding tool that is developing relatively rapidly at present. Compared with the resin bonded grindin...

Claims

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Application Information

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IPC IPC(8): C04B35/571C04B35/622
Inventor 张旺玺王艳芝
Owner ZHONGYUAN ENGINEERING COLLEGE