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Silicon carbide rod silicon nitride coating and preparation process thereof

A silicon carbon rod silicon nitride and preparation process technology, which is applied in the field of silicon nitride preparation, can solve problems such as shortening the service life of silicon carbon rods, and achieve the effects of ensuring quality and improving high temperature resistance.

Inactive Publication Date: 2018-11-20
淄博德瑞兹电热元件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Widely used in magnetic materials, non-ferrous metals, glass products, electronic ceramics, new energy materials and other fields, especially the soft magnetism in magnetic materials corrodes silicon carbide rods severely during the sintering process, greatly shortening the service life of silicon carbide rods. , we proposed a SiC rod silicon nitride coating and its preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present invention proposes a silicon carbide rod silicon nitride coating, the formula of its raw materials by weight is as follows: 30 parts of high-purity silicon nitride micropowder, 8 parts of epoxy resin powder, 6 parts of silica sol, 40 parts of methyl cellulose solution 5 parts, 5 parts of phenylalanine lactic acid, 6 parts of purified water, 1 part of curing agent, 1 part of dispersing agent, and 1 part of coupling agent.

[0029] The present invention also provides a preparation process of a silicon carbide rod silicon nitride coating, comprising the following steps:

[0030] S1. Add high-purity silicon nitride micropowder, epoxy resin powder, silica sol and water in sequence in proportion, and perform ball milling treatment in an environment of 40 degrees Celsius, and the ball milling time is 50 minutes, add methyl cellulose solution and For phenylalanine lactic acid, continue ball milling for 50 minutes under the same conditions. In the process of secondar...

Embodiment 2

[0043] The present invention proposes a silicon carbide rod silicon nitride coating, the formula of its raw materials by weight is as follows: 31 parts of high-purity silicon nitride micropowder, 9 parts of epoxy resin powder, 7 parts of silica sol, 45 parts of methyl cellulose solution 6 parts, 6 parts of phenylalanine lactic acid, 7 parts of purified water, 1.5 parts of curing agent, 1.5 parts of dispersing agent, and 1.5 parts of coupling agent.

[0044] The present invention also provides a preparation process of a silicon carbide rod silicon nitride coating, comprising the following steps:

[0045] S1. Add high-purity silicon nitride micropowder, epoxy resin powder, silica sol and water in sequence in proportion, and perform ball milling treatment in an environment of 45 degrees Celsius, and the ball milling time is 55 minutes, and then add methyl cellulose solution and For phenylalanine lactic acid, continue ball milling for 55 minutes under the same conditions. In the p...

Embodiment 3

[0058] The present invention proposes a silicon carbide rod silicon nitride coating, the formula of its raw materials by weight is as follows: 32.5 parts of high-purity silicon nitride micropowder, 10 parts of epoxy resin powder, 8.75 parts of silica sol, 50 parts of methyl cellulose solution 7.5 parts of phenylalanine, 8.75 parts of purified water, 2 parts of curing agent, 2 parts of dispersing agent, and 2 parts of coupling agent.

[0059] The present invention also provides a preparation process of a silicon carbide rod silicon nitride coating, comprising the following steps:

[0060] S1. Add high-purity silicon nitride micropowder, epoxy resin powder, silica sol and water in sequence in proportion, and perform ball milling treatment in an environment of 50 degrees Celsius, and the ball milling time is 60 minutes, add methyl cellulose solution and For phenylalanine lactic acid, continue ball milling for 60 minutes under the same conditions. In the process of secondary ball ...

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PUM

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Abstract

The invention discloses a silicon carbide rod silicon nitride coating which comprises the following raw materials in parts by weight: 30-35 parts of high-purity silicon nitride micro powder, 8-12 parts of epoxy resin powder, 6-11 parts of silica sol, 40-60 parts of a methyl cellulose solution, 5-10 parts of styrene acrylic acid, 6-11 parts of pure water, 1-3 parts of a curing agent, 1-3 parts of adispersant and 1-3 parts of a coupling agent. The invention further discloses a preparation process of the silicon carbide rod silicon nitride coating. A silicon carbide coating is formed on the outer side of the silicon nitride coating, and the service life of the silicon carbide rod in a kiln furnace is up to 600 hours or greater.

Description

technical field [0001] The invention relates to the technical field of silicon nitride preparation, in particular to a silicon carbide rod silicon nitride coating and a preparation process thereof. Background technique [0002] Silicon carbide rods are rod-shaped and tubular non-metallic high-temperature electric heating elements made of high-purity green hexagonal silicon carbide as the main raw material, processed into blanks according to a certain material ratio, and sintered at a high temperature of 2500°C for siliconization, recrystallization and sintering. Widely used in magnetic materials, non-ferrous metals, glass products, electronic ceramics, new energy materials and other fields, especially the soft magnetism in magnetic materials corrodes silicon carbide rods severely during the sintering process, greatly shortening the service life of silicon carbide rods. , we proposed a SiC rod SiN coating and its preparation process. Contents of the invention [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/584C04B35/622C04B35/626C04B41/87
CPCC04B35/584C04B35/62218C04B35/62605C04B41/5066C04B41/87C04B2235/6567C04B2235/661
Inventor 王勇
Owner 淄博德瑞兹电热元件有限公司