Li Lekai, Ma Zichao, Liu Guoqin, Tong Jin, Song Wei, Ren Lili, Tong Tianjian, Ma Yunhai
Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China.
Weihai Institute for Bionics, Jilin University, Weihai 264200, China.
Materials (Basel). 2023 Mar 3;16(5):2094. doi: 10.3390/ma16052094.
Resin-based friction materials (RBFM) are widely used in the fields of automobiles, agriculture machinery and engineering machinery, and they are vital for safe and stable operation. In this paper, polymer ether ketone (PEEK) fibers were added to RBFM to enhance its tribological properties. Specimens were fabricated by wet granulation and hot-pressing. The relationship between intelligent reinforcement PEEK fibers and tribological behaviors was investigated by a JF150F-II constant-speed tester according to GB/T 5763-2008, and the worn surface morphology was observed using an EVO-18 scanning electron microscope. The results showed that PEEK fibers can efficiently enhance the tribological properties of RBFM. A specimen with 6 ωt% PEEK fibers obtained the optimal tribological performance, the fade ratio was -6.2%, which was much higher than that of the specimen without the addition of PEEK fibers, the recovery ratio was 108.59% and the wear rate was the lowest, which was 1.497 × 10 cm/(Nm). The reason for the enhancing tribological performance was that, on the one hand, PEEK fibers have a high strength and modulus which can enhance the specimens at lower temperatures; on the other hand, molten PEEK at high temperatures can also promote the formation of secondary plateaus, which are beneficial for friction. The results in this paper can lay a foundation for future studies on intelligent RBFM.
树脂基摩擦材料（RBFM）广泛应用于汽车、农业机械和工程机械领域，对安全稳定运行至关重要。本文将聚醚醚酮（PEEK）纤维添加到RBFM中以提高其摩擦学性能。通过湿法制粒和热压制备试样。根据GB/T 5763-2008，采用JF150F-II恒速试验机研究了智能增强PEEK纤维与摩擦学行为之间的关系，并使用EVO-18扫描电子显微镜观察磨损表面形貌。结果表明，PEEK纤维能有效提高RBFM的摩擦学性能。含6ωt%PEEK纤维的试样获得了最佳摩擦学性能，热衰退率为-6.2%，远高于未添加PEEK纤维的试样，恢复率为108.59%，磨损率最低，为1.497×10 cm/(Nm)。摩擦学性能提高的原因在于，一方面，PEEK纤维具有高强度和模量，可在较低温度下增强试样；另一方面，高温下的熔融PEEK还可促进二次平台的形成，有利于摩擦。本文结果可为未来智能RBFM的研究奠定基础。
