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Study on the Distribution of Resin in Paper-based Friction Materials
Received:March 21, 2025  Revised:April 08, 2025
DOI:10.11980/j.issn.0254-508X.2025.08.007
Key Words:paper-based friction materials  resin distribution  impregnation
Fund Project:高性能湿式纸基摩擦材料基纸(项目号:D8216860)。
Author NameAffiliationPostcode
WANG Yuxiang* School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 510640
ZHAO Xintao School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 510640
ZHANG Chunhui* School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 510640
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Abstract:Structure and properties of paper-based friction materials are essentially affected by their surface and internal resins, and the uniformity of resin distribution determines the interaction among the internal components of paper-based friction materials, thus affecting the overall physico chemical properties. In order to realize the uniform distribution of resin in paper-based friction materials, the effect of resin content on the Z direction distribution (from mesh to blanket) of resin in paper-based friction materials was investigated. The results showed that with the increase of resin solution mass fraction, the resin content of paper-based friction materials increased, and the porosity and average pore size decreased. According to the difference of X-ray absorption degree of each component in paper-based friction material, the resin content was measured. When the resin content was low and the volume proportion was about 7%, the resin was evenly distributed in the Z direction of the paper-based friction material. With the increase of resin content, due to the uneven distribution of fibers, fillers, and pores in the base paper, the Z direction distribution of the resin in the paper-based friction material was uneven, and the two-sided difference of the resin content of the paper-based friction material increased. When the resin content in the paper-based friction material was high, the resin further occupied the available space occupied by air inside the paper-based friction material, resulting in the continuous increase of the resin inside the paper-based friction material, but the difference between the two sides of the resin content was only 0.5%.
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