硅藻土/nano-MoS2复合改性氟橡胶的摩擦磨损性能研究  

Research on Friction and Wear Properties of Fluorine Rubber Modified by Diatomite/Nano-MoS2

作　　者：谢强 魏刚[1] 刘燕 许荣霞 魏莉岚 XIE Qiang;WEI Gang;LIU Yan;XU Rong-xia;WEI Li-lan(College of Material Science&Engineering,Xihua University,Chengdu 610039,China)

机构地区：[1]西华大学材料科学与工程学院,成都610039

出　　处：《塑料工业》2021年第1期49-54,84,共7页China Plastics Industry

基　　金：四川省重点研发计划项目资助(编号:2020YFG0172)。

摘　　要：采用红外光谱仪、无转子硫化仪、环-块摩擦试验机、电子和光学显微镜等测试分析手段,重点考察了改性硅藻土及其与纳米二硫化钼(nano-MoS2)复合对氟橡胶(FKM)复合材料摩擦磨损性能的影响。结果表明,随着改性硅藻土含量的增加,FKM硫化胶的摩擦系数和磨损体积均呈现出逐渐降低的趋势;当改性硅藻土含量达到45 phr时,硫化胶表现出较好的摩擦磨损性能。在此基础上,再添加1 phr的nano-MoS2时,硫化胶具有最低的摩擦系数和体积磨损量,分别为0.4和1.42 mm^3,降低了16.7%和63.6%。SEM分析表明,改性硅藻土的加入有效抑制了氟橡胶的黏着磨损,适量硅藻土和nano-MoS2复合改性氟橡胶表现出轻微的磨粒磨损特征,磨损表面光滑平整,转移膜完整均匀。The influence of diatomite and compound with nano-scale molybdenum disulfide(nano-MoS 2)on friction and wear properties of fluorine rubber(FKM)was investigated by means of infrared spectrometer,rotor-less vulcanizer,ring-block type tribo-test machine,electron&optical microscopes and so on.The results indicate that the friction coefficient and wear volume of FKM vulcanized rubber decrease with the increase of the content of modified diatomite.When the content of modified diatomite reaches 45 phr,the vulcanized rubber shows better friction and wear performance.On this base,1 phr nano-MoS2 is added into fluorine rubber/diatomite composite,the vulcanized rubber has the lowest friction coefficient and volume wear,which are 0.4 and 1.42 mm^3,decreases 16.7%and 63.6%,respectively.Scanning electron microscope(SEM)analysis indicates that the addition of modified diatomite effectively inhibites the adhesive wear of fluorine rubber.Appropriate amount of diatomite and nano-MoS2 together modified fluorine rubber shows slight abrasive wear characteristics.The worn surface is flat and smooth,and its transfer film is uniform.

关 键 词：氟橡胶 改性硅藻土 纳米二硫化钼 摩擦磨损 

分 类 号：TQ333.93[化学工程—橡胶工业]