Tribological and mechanical behaviours of resin-based friction materials based on microcrack filling

IF 1.6 Q4 ENGINEERING, BIOMEDICAL Biosurface and Biotribology Pub Date : 2022-11-29 DOI:10.1049/bsb2.12055

Lekai Li, Guixiong Gao, Jin Tong, Jian Zhuang, Wei Song, Yunhai Ma, Guoqin Liu, Feipeng Cao, Shengwang Yuan, Qifeng Zhang

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引用次数: 2

Abstract

To enhance the friction performance of resin-based friction materials, five types of specimens with different polymer ether ketone (PEEK) contents were fabricated and their physiomechanical behaviours were tested and, their tribological properties were investigated using a JF150F-II constant-speed tester. It was found that the addition of PEEK had a positive influence on the properties of the friction materials, and sample FM-3 (the shorthand of ‘Friction Materials-3’, containing 2 wt% PEEK) exhibited improved friction performance with a fade ratio and recovery ratio of 8.6% and 101.1% respectively. Among all samples, FM-4 (the shorthand of ‘Friction Materials-4’, containing 3 wt% PEEK) had the lowest specific wear rate with a value of 0.622 × 10⁻⁷ cm³ (N·m)⁻¹ at 350°C. The PEEK can fill the microcracks in the composite at a high temperature and can also cover the hard abrasive particles to prevent them from directly damaging the composite. The findings from this study afford a foundation for studies to further improve the properties of resin-based friction materials.

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基于微裂纹填充的树脂基摩擦材料的摩擦学和力学性能

为提高树脂基摩擦材料的摩擦性能，采用JF150F-II等速试验机对5种不同PEEK含量的树脂基摩擦材料进行了物理力学性能测试和摩擦学性能研究。研究发现，PEEK的加入对摩擦材料的性能有积极的影响，样品FM-3(“摩擦材料-3”的简写，含有2 wt% PEEK)的摩擦性能得到改善，其褪色率和恢复率分别为8.6%和101.1%。在所有样品中，FM-4(“摩擦材料-4”的简写，含有3 wt% PEEK)在350℃时具有最低的比磨损率，值为0.622 × 10−7 cm3 (N·m)−1。PEEK可以在高温下填充复合材料中的微裂纹，也可以覆盖坚硬的磨料颗粒，防止它们直接损坏复合材料。研究结果为进一步提高树脂基摩擦材料的性能奠定了基础。

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