Low-temperature plasma spraying method for heat-sensitive polymer matrix and composite material

By employing a low-temperature plasma spraying method and an active thermal management strategy, a high-strength ceramic coating is formed on an epoxy resin matrix, resolving the contradiction between thermal shock and bonding strength. This achieves improved wear resistance and simplified processing, making it suitable for heat-sensitive polymer materials.

CN121892364APending Publication Date: 2026-04-21INST OF METAL RESEARCH - CHINESE ACAD OF SCI
0 Cites 0 Cited by

Patent Information

Application Number
CN202511863947.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-11
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Existing technologies cannot achieve high-strength ceramic coatings on epoxy resin substrates. There are contradictions between thermal shock, bonding strength and thermal stress, as well as between activation energy and reaction temperature, which makes conventional plasma spraying technology unsuitable for epoxy resin materials.

Method used

A low-temperature plasma spraying method was adopted, in which the pitted surface was constructed by sandblasting pretreatment with white corundum sand with a particle size of 50–100 μm. Combined with an active thermal management strategy, the coating was sprayed in the range of 0–10℃. Al2O3-TiO2 composite powder was used, and the spraying parameters were optimized to form a high-strength bonded ceramic coating.

Benefits of technology

It has enabled the formation of a high-strength, wear-resistant ceramic coating on an epoxy resin matrix, which solves the risk of thermal damage to heat-sensitive materials, improves bonding strength and wear resistance, simplifies the process, and reduces production costs.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention provides a low-temperature plasma spraying method for a heat-sensitive polymer matrix and a composite material, and belongs to the technical field of surface engineering. According to the method, through a system process of matrix surface pretreatment, spraying powder drying and low-temperature plasma spraying, the core is that a matrix active cooling technology is adopted in the range of 0-10 DEG C to isolate the plasma arc heat influence, and optimized sand blasting coarsening, powder granularity control and spraying process parameters are matched; and the compact Al2O3-TiO2 ceramic coating with high bonding strength is successfully prepared on a heat-sensitive epoxy resin matrix. The limitation that a traditional thermal spraying technology cannot be used for high polymer materials is broken through, the technological process is simple, the cost is low, and the obtained coating is excellent in abrasion resistance and suitable for meeting the requirement for high performance of the surface of the light high polymer material in the fields of electronic equipment, aerospace and the like.
Need to check novelty before this filing date? Find Prior Art