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Temperature resistance type infrared low emissivity coating and preparation method thereof

A low-emissivity coating and temperature-resistant resin technology, which is applied in coatings, fireproof coatings, camouflage coatings, etc., can solve the problems of poor medium and high temperature resistance, reduce thermal radiation rate, improve camouflage stealth performance, and good The effect of system compatibility

Pending Publication Date: 2019-03-05
LUOYANG INST OF CUTTING EDGE TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present invention provides a temperature-resistant infrared low-emissivity coating and its preparation method to solve the problem of poor medium and high temperature resistance of the existing infrared low-emissivity coating and realize low-infrared emission High rate coating can function normally below 400°C

Method used

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  • Temperature resistance type infrared low emissivity coating and preparation method thereof
  • Temperature resistance type infrared low emissivity coating and preparation method thereof

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preparation example Construction

[0022] The preparation method of the temperature-resistant infrared low emissivity coating provided by the invention comprises the following steps:

[0023] like figure 1 As shown in step S101, take 50-90 parts of temperature-resistant resin, 20-40 parts of aluminum powder, 2-4 parts of diatomaceous earth, and mix uniformly with high-temperature-resistant ceramic powder to obtain a preliminary slurry, wherein, according to In terms of mass percentage, the high-temperature-resistant ceramic powder accounts for 3.5%-5.5% of the total mass of the preliminary slurry; preferably, 70 parts of temperature-resistant resin, 30 parts of aluminum powder, 3 parts of diatomaceous earth, and high-temperature-resistant ceramic powder are mixed uniform to obtain a preliminary slurry, wherein, in terms of mass percentage, the high temperature resistant ceramic powder accounts for 4.5% of the total mass of the preliminary slurry. Among them, the temperature-resistant resin is pure silicone res...

Embodiment 1

[0028] 1. Take 70g of polymethyl silicone resin, add 30g of aluminum powder, 3g of diatomaceous earth, 4.5% high-temperature-resistant alumina ceramic powder, let it stand for 0.5-2h, and then fully stir it evenly with a laboratory high-speed disperser;

[0029] 2. Add an appropriate amount of diluent ethyl acetate to adjust the viscosity to 16s;

[0030] 3. Spray the coating on the titanium alloy substrate, then dry it naturally for 48 hours, and cure it at 120°C for 0.5 hours;

[0031] 4. Use a heating device to heat the coating to 400°C and cool it to room temperature to test the temperature resistance of the coating. Use an emissivity measuring instrument to test the infrared emissivity of the coating in the 3-5μm and 8-14μm bands.

Embodiment 2

[0033] 1. Take 50g of epoxy-modified silicone resin, add 30g of aluminum powder, 4g of diatomite, 3.5% high-temperature-resistant zirconia ceramic powder, let it stand for 0.5h, and then fully stir it evenly with a laboratory high-speed disperser;

[0034] 2. Add an appropriate amount of diluent butyl acetate to adjust the viscosity to 16s;

[0035] 3. Spray the coating on the aluminum alloy substrate, then dry it naturally for 50 hours, and cure it at 120°C for 0.5 hours;

[0036] 4. Use a heating device to heat the coating to 380°C and then cool it to room temperature to test the temperature resistance of the coating. Use an emissivity measuring instrument to test the infrared emissivity of the coating in the 3-5μm and 8-14μm bands.

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Abstract

Embodiments of the invention provide a preparation method of a temperature resistance type infrared low emissivity coating. The method includes the following steps: 50-90 parts of temperature resistance resin, 20-40 parts of aluminum powder, 2-4 parts of kieselguhr, and high temperature resistance ceramic powder are taken and uniformly mixed to obtain preliminary slurry, wherein the high temperature resistance ceramic powder accounts for 3.5%-5.5% of the total mass of the preliminary slurry according to the mass percentage; a proper amount of diluent is added to the preliminary slurry, and paint is obtained by uniform stirring; the paint is sprayed on an alloy substrate to obtain the coating, and then the natural surface drying is performed; and the coating is heated, and then the coatingis cooled to room temperature to obtain the temperature resistance type infrared low emissivity coating. The temperature resistance type infrared low emissivity coating of the invention is high in temperature resistance performance and can be used in the environment below 400 DEG C, and in addition, the infrared emissivity is less than 0.25 in the wave band of 3-5 [mu]m and 8-14 [mu]m, and a purpose of stealth camouflage can be achieved.

Description

technical field [0001] The invention belongs to the technical field of functional coating materials, and more specifically relates to a temperature-resistant low-emissivity infrared coating and a preparation method thereof. Background technique [0002] The infrared detector collects the 3μm-5μm and 8μm-14μm band infrared signals of the target, and then uses the difference in infrared radiation energy between the target and the background to identify the target through imaging. Reducing the surface temperature of the target can make the radiation intensity of the target and the background similar, and coating low-emissivity functional coatings on high-temperature components is also one of the effective measures. [0003] Low-emissivity functional coatings are generally composed of binders and fillers, which are divided into two types: organic systems and inorganic systems. The temperature resistance of existing infrared low-emissivity coatings is mostly below 200°C, while i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/04C09D183/06C09D183/10C09D5/30C09D7/61
CPCC08K3/34C08K3/36C08K7/26C08K2003/0812C08K2003/2227C08K2003/2244C09D5/18C09D5/30C09D183/04C09D183/06C09D183/10C09D5/00
Inventor 不公告发明人
Owner LUOYANG INST OF CUTTING EDGE TECH