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A kind of antistatic optical absorption coating with low outgassing rate and preparation method thereof

A technology of optical absorption and outgassing rate, applied in coatings, conductive coatings, chemical industry, etc., can solve the problems of optical system signal intensity reduction, optical system performance attenuation, coating outgassing pollution control, etc. Pollution of sensitive devices, good anti-static performance, and the effect of expanding usage scenarios

Active Publication Date: 2022-08-09
西安应用光学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the space optical load system and the low-temperature infrared system have more stringent requirements for the control of coating outgas pollution. Pollutants will reduce the signal strength of the optical system and the signal-to-noise ratio. Reduce system reliability and service life, therefore, generally require coating CVCM<0.01%
The existing commercial coatings represented by Z306, E51, etc. are difficult to achieve good control of condensable volatile pollution, resulting in attenuation of optical system performance by more than 10%, and some even exceed 30%

Method used

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  • A kind of antistatic optical absorption coating with low outgassing rate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The preparation process of a low outgassing rate antistatic optical absorption coating is as follows:

[0036] S1: Preparation of Primer Dispersion:

[0037] The graphene oxide microflakes with an average diameter of 10 μm were uniformly dispersed in the organic solvent tetrahydrofuran for ultrasonic treatment, and then a certain amount of cage-type silsesquioxane with an amino side group was added and mixed and stirred at room temperature to obtain graphene oxide / time. Semisiloxane dispersion, wherein the weight ratio of graphene oxide to silsesquioxane is 70:30. The dispersion concentration was 1 mg / ml.

[0038] S2: Preparation of Primer:

[0039] The dispersion liquid prepared in step S1 is uniformly deposited on the clean aluminum base surface, and a primer is obtained by volatilizing an appropriate amount at room temperature, and the volatilization time is 6 hours.

[0040] S3: Preparation of Topcoat Suspension:

[0041] The hydroxylated carbon nanotubes are ul...

Embodiment 2

[0049] An antistatic optical absorption coating with a low outgassing rate, the preparation process of which is as follows:

[0050] S1: Preparation of Primer Dispersion:

[0051]The graphene oxide microflakes with an average diameter of 10 μm are uniformly dispersed in the organic solvent tetrahydrofuran for ultrasonic treatment, and then a certain amount of cage-type silsesquioxane with amino side groups is added and mixed and stirred at room temperature to obtain graphene oxide / sesquioxane A siloxane dispersion, wherein the weight ratio of the graphene oxide to the silsesquioxane is 95:5. The dispersion concentration was 1 mg / ml.

[0052] S2: Preparation of Primer:

[0053] The dispersion liquid prepared in step S1 is evenly deposited on the clean aluminum base surface, and a primer is obtained by volatilizing an appropriate amount at room temperature, and the volatilization time is 6 hours.

[0054] S3: Preparation of Topcoat Suspension:

[0055] The hydroxylated carbo...

Embodiment 3

[0063] An antistatic optical absorption coating with a low outgassing rate, the preparation process of which is as follows:

[0064] S1: Preparation of Primer Dispersion:

[0065] The graphene oxide microflakes with an average diameter of 10 μm are uniformly dispersed in the organic solvent tetrahydrofuran for ultrasonic treatment, and then a certain amount of cage-type silsesquioxane with amino side groups is added and mixed and stirred at room temperature to obtain graphene oxide / sesquioxane Silicone dispersion, wherein the weight ratio of graphene oxide to silsesquioxane is 90:10. The dispersion concentration was 1 mg / ml.

[0066] S2: Preparation of Primer:

[0067] The dispersion liquid prepared in step S1 is evenly deposited on the clean aluminum base surface, and a primer is obtained by volatilizing an appropriate amount at room temperature, and the volatilization time is 6 hours.

[0068] S3: Preparation of Topcoat Suspension:

[0069] The hydroxylated carbon nanotu...

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Abstract

The invention belongs to the technical field of optical absorption coatings, and discloses a preparation method of an antistatic optical absorption coating with a low outgassing rate. , Coating heat treatment. The invention adopts a non-polymer reaction system mainly based on carbon materials, and has the characteristics of no decomposition products, no free small molecules, etc., and eliminates outgas pollution from coating material components; high hydrophobic siloxane is used to seal carbon materials. The middle hydrophilic functional group greatly reduces the adsorption amount of the coating to environmental gases such as moisture; at the same time, the coating has good antistatic properties, which can meet the application needs of specific space environments.

Description

technical field [0001] The invention belongs to the technical field of optical absorption coatings, and relates to an antistatic optical absorption coating with a low outgassing rate and a preparation method thereof. Background technique [0002] Optical absorption coatings are functional coatings widely used in space load systems, and play an important role in stray light suppression, thermal radiation control, and blackbody calibration. These coatings are mainly made of non-metallic materials such as polymers. When in a space vacuum environment, due to the decrease of external air pressure, the concentration balance inside and outside the coating is broken, and some substances inside and on the surface of the coating will diffuse, evaporate, These escaping small molecules are further condensed or deposited on the surface of sensitive devices such as optical lenses, thermal radiation materials, and thermal control materials in the space load system, resulting in pollution e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/24C09D183/08C09D183/06
CPCC09D5/24C09D183/08C09D183/06C08K2201/001C08K2201/017C08K3/042C08K3/041Y02P20/10
Inventor 俞兵王啸袁林光李朝龙范纪红史浩飞李燕朴明星秦艳
Owner 西安应用光学研究所
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