改性PBT复合材料在水润滑条件下的摩擦学性能研究

发布时间：2018-01-12 07:08

  本文关键词：改性PBT复合材料在水润滑条件下的摩擦学性能研究　出处：《润滑与密封》2017年08期 　论文类型：期刊论文

  更多相关文章： PBT PTFE 芳纶 硅灰石 摩擦性能 材料改性

【摘要】：通过熔融共混法制备聚四氟乙烯(PTFE)/聚对苯二甲酸丁二醇酯(PBT)、硅灰石/PBT复合材料及芳纶质量分数为5%和10%的芳纶/PBT复合材料,对比分析4种改性PBT复合材料在水润滑条件下的摩擦磨损性能。结果表明:在中低速下,4种复合材料摩擦因数比较稳定,高速条件下,PTFE/PBT、硅灰石/PBT复合材料的摩擦因数逐渐上升,芳纶/PBT复合材料摩擦因数逐渐减小,其中芳纶质量分数为5%的改性PBT复合材料在试验时间内平均摩擦因数最小,摩擦因数稳定性最高;芳纶/PBT复合材料在试验时间内的磨损量明显小于PTFE/PBT及硅灰石/PBT复合材料,其中芳纶质量分数为5%的芳纶/PBT复合材料的磨损量最小;芳纶/PBT复合材料磨损机制主要为轻微的疲劳磨损,PTFE/PBT复合材料主要为黏着磨损,并伴随轻微的疲劳磨损,硅灰石/PBT复合材料以磨粒磨损为主。
[Abstract]:PTFEN / PBT was prepared by melt blending method. Wollastonite / PBT composites and aramid / PBT composites with 5% and 10% aramid fiber mass fraction. The friction and wear properties of four modified PBT composites under water lubrication were compared and analyzed. The results showed that the friction coefficient of the four modified PBT composites was stable at medium and low speed and stable at high speed. The friction coefficient of PTFE- / PBT, wollastonite / PBT composites increases gradually, while the friction coefficient of aramid / PBT composites decreases. The average friction coefficient and the stability of the modified PBT composites with aramid fiber mass fraction 5% were the lowest and the highest in the test time. The wear rate of Aramid / PBT composites is obviously lower than that of PTFE/PBT and wollastonite / PBT composites during the test time. Aramid / PBT composites with aramid fiber mass fraction of 5% have the lowest wear rate. The wear mechanism of aramid / PBT composites is mainly mild fatigue wear. PTFE / PBT composites are mainly adhesive wear, accompanied by slight fatigue wear. Wollastonite / PBT composites are mainly abrasive wear.
【作者单位】： 武汉理工大学能源与动力工程学院;上海外高桥造船有限公司;国家水运安全工程技术研究中心可靠性工程研究所;
【基金】：国家自然科学基金优秀青年基金项目(51422507);国家自然科学基金青年科学基金项目(51509195) 武汉理工大学国家级大学生创新创业训练计划项目(20161049705003)
【分类号】：TB332;TQ323.41
【正文快照】： j縥縥縥縥縥縥縥，

本文编号：1413191