發(fā)布時間：2018-05-08 20:03

  本文選題：木質素纖維 + 摩擦材料��； 參考：《潤滑與密封》2017年08期

【摘要】：制備一種木質素纖維增強摩擦材料,采用沖擊試驗機和硬度計分析其力學性能,采用摩擦磨損試驗機考察其摩擦磨損性能,采用掃描電子顯微鏡(SEM)和X射線衍射儀分析其斷面形貌及磨損表面形貌,并探討其磨損機制。結果表明:與鋼纖維相比,木質素纖維能夠提高摩擦材料的抗沖擊韌性和抗斷裂韌性,降低摩擦材料的硬度;在摩擦過程中木質素纖維在摩擦材料表面形成一層致密的摩擦層和轉移膜,使摩擦材料的摩擦因數(shù)比較穩(wěn)定,且300℃高溫時沒有出現(xiàn)明顯的熱衰退現(xiàn)象,磨損量符合國家標準的范圍;SEM和X射線衍射分析表明,木質素纖維與基體結合強度高,對摩擦材料增強效果顯著,其在高溫階段的主要磨損機制為磨粒磨損和疲勞磨損。
[Abstract]:A lignin fiber reinforced friction material was prepared and its mechanical properties were analyzed by impact tester and hardness tester. Scanning electron microscopy (SEM) and X-ray diffractometer (XRD) were used to analyze the morphology of the section and the wear surface, and the wear mechanism was discussed. The results show that lignin fiber can improve the impact toughness and fracture toughness of friction materials and reduce the hardness of friction materials. In the process of friction, the lignin fiber forms a dense friction layer and a transfer film on the surface of the friction material, which makes the friction coefficient of the friction material more stable, and there is no obvious phenomenon of thermal degradation at 300 鈩，

本文編號：1862847