Mechanically stable super-black light absorbing coating, method of making and use thereof

By mixing resin with light absorber and then etching and fluorinating to form a micro-nano structured ultra-black light-absorbing coating, the problems of complex preparation and insufficient mechanical properties in existing technologies are solved, enabling application on large-area complex curved surfaces and efficient light absorption.

CN117701144BActive Publication Date: 2026-06-02CHANGCHUN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGCHUN UNIV OF TECH
Filing Date
2023-12-13
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing ultra-black light-absorbing coatings are complex and time-consuming to prepare in practical applications, have poor mechanical properties, are difficult to apply to large areas or complex curved surfaces, and have insufficient wear resistance and adhesion.

Method used

A super black light-absorbing coating with a micro-nano structure is formed by mixing resin and light absorber, followed by etching and fluorination. This coating is combined with carbon nanotubes to form a three-dimensional framework, enhancing light absorption and mechanical properties.

Benefits of technology

A mechanically stable ultra-black light-absorbing coating was prepared without the need for complex equipment and under harsh conditions. This coating reduces reflectivity and has a superhydrophobic structure, thereby improving the measurement accuracy and self-cleaning performance of optical equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to a kind of mechanical properties stable super black light absorption coating and its preparation method and application, the present application includes the following steps: resin is stirred and mixed with light absorber, obtain mixed slurry;The obtained mixed slurry is coated on substrate, after first curing, etching treatment is carried out, and etching sample is obtained;The obtained etching sample is fluorinated, second curing is carried out, and the mechanical properties stable super black light absorption coating is obtained.The present application adjusts the proportion of light absorber and resin and etching time, so that the mechanical properties stable super black light absorption coating has micro-nano porous structure, these light trapping structures can completely absorb and consume multiple reflection light beams, and can effectively reduce reflectivity.The method is simple in operation, low in cost, easy to control, suitable for large-scale production, and stable in mechanical properties;It can be used to improve the measurement accuracy of thermal detector and infrared optical system, and enhance the accuracy of optical navigation system.
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