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High temperature resistance low-expansion high-radiation (reflecting) inorganic waterproof coating

A waterproof coating and low-expansion technology, applied in other chemical processes, chemical instruments and methods, etc., can solve problems such as low expansion coefficient, large expansion coefficient, and low strength

Active Publication Date: 2010-02-17
ZHONGCAI HIGH NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although organic coatings have elastic expansion coefficients, they are not resistant to high temperatures, so only inorganic non-metallic coatings can be used.
Generally speaking, the lower the density, the higher the porosity, the low expansion coefficient and the low strength of thermal insulation materials, this is especially true for high-performance thermal insulation materials, such as quartz thermal insulation tiles for space shuttles, while inorganic The coating is generally dense and has a large expansion coefficient, which is difficult to match with low-density heat insulation materials, and the combination is firm

Method used

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  • High temperature resistance low-expansion high-radiation (reflecting) inorganic waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The synthetic borosilicate glass powder is synthesized by melting boron oxide and silicon dioxide at a weight ratio of 1:10 at a high temperature of 1100±15°C.

[0017] β-eucryptite is synthesized by lithium carbonate, alumina and silicon dioxide at a molar ratio of 1:1:3 at a high temperature of 1150±10°C.

[0018] The high-temperature-resistant, low-expansion, high-radiation (reflection) inorganic waterproof coating of the present invention comprises the following ingredients by weight: 50% of synthetic borosilicate glass powder, 30% of β-eucryptite, 5% of fused silica powder, tetraboride 2% of silicon, 10% of cobalt black pigment and 3% of additives, wherein the additives are mixed with polyethylene glycol and tributyl phosphate, and the weight mixing ratio is 2:1.

[0019] Weigh borosilicate glass powder, β-eucryptite, fused silica powder, silicon tetraboride and cobalt black pigment in proportion, put them into a grinding tank for ball milling, then sieve through a...

Embodiment 2

[0021] The synthetic borosilicate glass powder is synthesized by melting boron oxide and silicon dioxide at a weight ratio of 1:15 at a high temperature of 1050±30°C.

[0022] β-eucryptite is synthesized by lithium carbonate, alumina and silicon dioxide at a molar ratio of 1:1:2.5 at a high temperature of 1200±20°C.

[0023] The high-temperature-resistant, low-expansion, high-radiation (reflection) inorganic waterproof coating of the present invention comprises the following ingredients by weight: 65% of synthetic borosilicate glass powder, 15% of β-eucryptite, 5% of fused silica powder, tetraboride 5% of silicon, 7% of cobalt black pigment and 3% of auxiliary agent, wherein the auxiliary agent is formed by mixing polyethylene glycol and tributyl phosphate, and the weight mixing ratio is 2:1.5.

[0024] Other processes are the same as in Example 1. The surface of the coating prepared by the above process is smooth and dense, and it is firmly bonded to the substrate. The measur...

Embodiment 3

[0026] The synthetic borosilicate glass powder is synthesized by melting boron oxide and silicon dioxide at a weight ratio of 1:8 at a high temperature of 1160±10°C.

[0027] β-eucryptite is synthesized by lithium carbonate, alumina and silicon dioxide at a molar ratio of 1:1:4 at a high temperature of 1300±30°C.

[0028] The high-temperature-resistant, low-expansion, high-radiation (reflection) inorganic waterproof coating of the present invention comprises the following ingredients by weight: 80% of synthetic borosilicate glass powder, 5% of β-eucryptite, 5% of silicon tetraboride, cobalt-free 7% of black pigment and 3% of auxiliary agent, wherein the auxiliary agent is formed by mixing polyethylene glycol and tributyl phosphate, and the weight mixing ratio is 2:0.8.

[0029] Other processes are the same as in Example 1. The surface of the coating prepared by the above process is smooth and dense, and it is firmly bonded to the substrate. The measured performance indicators ...

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Abstract

The invention relates to a high temperature resistance low-expansion high-radiation (reflecting) inorganic waterproof coating, belonging to the technical field of inorganic materials and being appliedto aircraft parts. The inorganic waterproof coating comprises the following ingredients according to weight percentage: 50-80% of synthetic borosilicate glass powder, 5-30% of beta-eucryptite, 0-5% of quartz powder, 0-20% of silicon tetraboride, 0-10% of black pigment and 1-3% of assistant, wherein, the assistant is obtained by blending polyethylene glycol and tributyl phosphate and the weight blending ratio is 2:(0.5-2). The invention has good combining and matching performance and can satisfy the requirements of high temperature resistance, low expansion and high radiation.

Description

technical field [0001] The invention relates to a high-temperature-resistant, low-expansion, high-radiation (reflection) inorganic waterproof coating, which belongs to the technical field of inorganic materials and is used on aircraft components. Background technique [0002] In a high-temperature environment, heat transfer is a comprehensive heat transfer in various ways, so various means are required for heat insulation, and high-temperature radiation or reflective heat insulation is one of them. It is an ideal way to apply a high radiation or reflective coating on the substrate of the low thermal conductivity thermal insulation material according to different thermal environments if the thermal insulation material has both low thermal conductivity and high radiation thermal insulation. But this also puts very strict requirements on the coating. The coating must have high temperature resistance, high radiation or high reflection coefficient, especially the same or close th...

Claims

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Application Information

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IPC IPC(8): C04B35/66C09K3/18
Inventor 赵小玻魏美玲于海杰尚超峰刘瑞祥程之强王重海隋学叶栾艺娜宋涛
Owner ZHONGCAI HIGH NEW MATERIAL