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Silicon nitride combined silicon carbide kiln composite block heat-insulation material and preparation method thereof

A thermal insulation material, a technology of silicon carbide, applied in the field of composite thermal insulation materials, can solve the problems of thermal insulation performance and strength decline of silicon carbide thermal insulation materials, and achieve the effect of good thermal insulation performance and high strength

Inactive Publication Date: 2016-11-09
孟红琳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the thermal insulation performance and strength of silicon carbide thermal insulation materials decrease during high temperature use

Method used

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  • Silicon nitride combined silicon carbide kiln composite block heat-insulation material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Prepare the following raw materials in parts by weight: 80 parts of silicon carbide (SiC), silicon nitride (Si 3 N 4 ) 3 parts, aluminum titanate (Al 2 TiO 5 ) 4 parts, potassium titanate whiskers 4 parts, filler particle silica 3 parts, paraffin wax 6 parts, talcum powder 3 parts, cationic surfactant stearyl amino ether lactate 2 parts, anionic surfactant 2- 2 parts of ethylhexyl sulfate, 3 parts of crystalline polyester resin polyethylene terephthalate, 6 parts of organic solvent ethyl acetate.

[0034] The preparation method comprises the steps of:

[0035] Step 1: Mix silicon carbide, aluminum titanate, potassium titanate whiskers, cationic surfactant, crystalline polyester resin, and organic solvent at 80°C for 20 minutes to obtain a mixture of cationic modified particles ;

[0036] In the second step, the silicon nitride, filler particles, paraffin, talcum powder, and anionic surfactant are mixed uniformly at 40°C, and the mixing time is 20 minutes to obtain ...

Embodiment 2

[0041] Prepare the following raw materials in parts by weight: 90 parts of silicon carbide (SiC), silicon nitride (Si 3 N 4 ) 10 parts, aluminum titanate (Al 2 TiO 5 ) 7 parts, potassium titanate whiskers 12 parts, filler particle silica 5 parts, paraffin wax 8 parts, talc powder 5 parts, cationic surfactant stearyl amino ether lactate 4 parts, anionic surfactant 2- 4 parts of ethylhexyl sulfate, 6 parts of crystalline polyester resin polyethylene terephthalate, 12 parts of organic solvent ethyl acetate.

[0042] The preparation method comprises the steps of:

[0043] Step 1: Mix silicon carbide, aluminum titanate, potassium titanate whiskers, cationic surfactant, crystalline polyester resin, and organic solvent at 110°C for 30 minutes to obtain a mixture of cationic modified particles ;

[0044] In the second step, the silicon nitride, filler particles, paraffin, talcum powder, and anionic surfactant are mixed uniformly at 50°C, and the mixing time is 30 minutes to obtai...

Embodiment 3

[0049] Prepare the following raw materials by weight: 85 parts of silicon carbide (SiC), silicon nitride (Si 3 N 4 ) 5 parts, aluminum titanate (Al 2 TiO 5 ) 5 parts, potassium titanate whiskers 5 parts, filler particle silica 4 parts, paraffin wax 7 parts, talcum powder 4 parts, cationic surfactant stearyl amino ether lactate 3 parts, anionic surfactant 2- 3 parts of ethylhexyl sulfate, 4 parts of crystalline polyester resin polyethylene terephthalate, 8 parts of organic solvent ethyl acetate.

[0050] The preparation method comprises the steps of:

[0051] Step 1: Mix silicon carbide, aluminum titanate, potassium titanate whiskers, cationic surfactant, crystalline polyester resin, and organic solvent at 90°C for 25 minutes to obtain a mixture of cationic modified particles ;

[0052] Step 2: Mix silicon nitride, filler particles, paraffin wax, talcum powder, and anionic surfactant at 45°C, and the mixing time is 25 minutes to obtain a mixture of anion-modified particles...

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Abstract

The invention discloses a silicon nitride combined silicon carbide kiln composite block heat-insulation material and a preparation method thereof, and belongs to the technical field of composite heat insulation materials. The kiln composite block heat-insulation material comprises, by weight, 80-90 parts of silicon carbide (SiC), 3-10 parts of silicon nitride (Si3N4), 4-7 parts of aluminum titanate (Al2TiO5), 4-12 parts of potassium titanate whisker, 3-5 parts of filler particles, 6-8 parts of paraffin, 3-5 parts of talcum powder, 2-4 parts of a cationic surfactant, 2-4 parts of an anionic surfactant, 3-6 parts of crystalline polyester resin and 6-12 parts of an organic solvent. The composite block heat-insulation material prepared in the invention has the advantages of good heat insulation performance and high strength.

Description

technical field [0001] The invention discloses a silicon nitride-bonded silicon carbide kiln composite block thermal insulation material and a preparation method thereof, belonging to the technical field of composite thermal insulation materials. Background technique [0002] In industrial production, use the heat generated by fuel combustion, or convert electrical energy into heat energy, so as to realize the thermal equipment used in various processing techniques such as smelting, heating, drying, sintering, cracking and distillation of workpieces or materials, called For industrial kilns. Industrial kiln is mainly composed of furnace lining, furnace frame, heating device (such as combustion device, electric heating element), preheater, furnace front pipeline, smoke exhaust system, furnace machinery and other parts. [0003] Industrial furnaces are key energy-consuming equipment among many energy-consuming equipment in energy-consuming enterprises. For an energy-consumin...

Claims

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Application Information

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IPC IPC(8): C04B35/81C04B35/565C04B35/622C04B35/626C04B38/00
CPCC04B35/806C04B35/565C04B35/622C04B35/62645C04B38/00C04B2235/3217C04B2235/3232C04B2235/3418C04B2235/349C04B2235/3873C04B2235/5276C04B2235/96C04B2235/9607C04B38/0074C04B38/0067
Inventor 孟红琳
Owner 孟红琳
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