High-temperature-resistant ceramic coating and preparation method thereof

A technology of high temperature resistant ceramics and coatings, applied in the direction of fireproof coatings, polyurea/polyurethane coatings, coatings, etc., to achieve the effects of improving comprehensive performance, excellent high temperature resistance, excellent high temperature resistance and thermal conductivity

Active Publication Date: 2020-04-03
浙江裕辉新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for boilers and other places where the working temperature reaches 500°C or even 700°C, it cannot meet the demand

Method used

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  • High-temperature-resistant ceramic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A high-temperature-resistant ceramic coating, comprising component A and component B with a mass ratio of 1:1.

[0047] A component comprises the raw material of following weight portion:

[0048] 25 parts of modified silane;

[0049] 3 parts of water-based polyurethane, brand PU7106, purchased from Shanghai Belt New Material Technology Co., Ltd.;

[0050] 1 part of leveling agent, the leveling agent is polydimethylsiloxane;

[0051] 0.3 parts of formic acid;

[0052] Potassium hydroxide 0.1 parts.

[0053] B component comprises the raw material of following weight portion:

[0054] 50 parts of silica sol, silica sol includes 30wt% particle diameter of 5 μm silica sol A and 70wt% particle diameter of 20 μm silica sol B, silica sol A and silica sol B are alkaline, pH value is 9.5, silica content 50%;

[0055] 5 parts of mica powder, particle size 50μm;

[0056] Silica powder 15 parts, particle size 30μm;

[0057] Graphene 2.5 parts, monolayer ratio greater than 8...

Embodiment 2

[0069] A high-temperature-resistant ceramic coating, comprising component A and component B with a mass ratio of 1:1.

[0070] A component comprises the raw material of following weight portion:

[0071] 30 parts of modified silane;

[0072] 5 parts of water-based polyurethane, brand PU7106, purchased from Shanghai Belt New Material Technology Co., Ltd.;

[0073] 1.5 parts of leveling agent, the leveling agent is polydimethylsiloxane;

[0074] 0.5 parts of formic acid;

[0075] Potassium hydroxide 0.2 parts.

[0076] B component comprises the raw material of following weight portion:

[0077] 60 parts of silica sol, silica sol includes 40wt% particle diameter of 5 μm silica sol A and 60wt% particle diameter of 30 μm silica sol B, silica sol A and silica sol B are alkaline, pH value is 9.5, silica content 50%;

[0078] 10 parts of mica powder, particle size 50μm;

[0079] Silica powder 20 parts, particle size 30μm;

[0080] 3.5 parts of graphene, the monolayer ratio is ...

Embodiment 3

[0092] A high-temperature-resistant ceramic coating, comprising component A and component B with a mass ratio of 1:1.

[0093] A component comprises the raw material of following weight portion:

[0094] 28 parts of modified silane;

[0095] 4 parts of water-based polyurethane, grade PU7106, purchased from Shanghai Belt New Material Technology Co., Ltd.;

[0096] 1.2 parts of leveling agent, the leveling agent is polydimethylsiloxane;

[0097] 0.4 parts of formic acid;

[0098] Potassium hydroxide 0.15 parts.

[0099] B component comprises the raw material of following weight portion:

[0100] 55 parts of silica sol, silica sol includes 35wt% particle diameter of 5 μm silica sol A and 65wt% particle diameter of 25 μm silica sol B, silica sol A and silica sol B are alkaline, pH value is 9.5, silica content 50%;

[0101] 8 parts of mica powder, particle size 50μm;

[0102] Silica powder 18 parts, particle size 30μm;

[0103] 3 parts of graphene, single-layer ratio greate...

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Abstract

The invention discloses a high-temperature-resistant ceramic coating, and belongs to the field of paints. The high-temperature-resistant ceramic coating comprises a component A and a component B at amass ratio of 1: 1, wherein the component A is prepared from the following raw materials in parts by weight: 25 to 30 parts of modified silane, 1 to 1.5 parts of a leveling agent, 0.3 to 0.5 part of formic acid and 0.1 to 0.2 part of potassium hydroxide; the component B is prepared from the following raw materials in parts by weight: 50 to 60 parts of silica sol, 5 to 10 parts of mica powder; 15 to 20 parts of silica powder; and 10-15 parts of water. The modified silane is used as a main film-forming substance and is closely related to the heat resistance of the coating. Gamma-aminopropylmethyldimethoxysilane is used as a modified silane based body and has good bonding performance with inorganic materials, and imide rings with excellent thermal stability are introduced into modified molecular chains, so that the high-temperature resistance of film layers is greatly improved.

Description

technical field [0001] The invention relates to coatings, in particular to a high-temperature-resistant ceramic coating and a preparation method thereof. Background technique [0002] Ceramic coating is a new type of coating with both organic and inorganic excellent properties. It has the advantages of high hardness, wear resistance, non-stick, hydrophobic and oleophobic, good flexibility, impact resistance, and good weather resistance. Because of its excellent performance in all aspects, ceramic coatings are widely used, such as non-stick pans, automobile exhaust pipes, aluminum curtain walls, chemical storage tanks, etc. Ceramic coatings are made of nano-inorganic compounds and binders as the main components, adding other additives and using water as the dispersant. After coating, they are cured by low-temperature heating, which is very environmentally friendly. When ceramic coatings are used for non-stick pans, compared with the previously commonly used Teflon coatings, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D183/08C09D175/04C09D7/61
CPCC08L2201/08C09D1/00C09D5/18C09D183/08C09D7/61C08L75/04C08K3/36C08K3/34C08K3/042
Inventor 张春健张博伦
Owner 浙江裕辉新材料科技有限公司
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