改性MoS/SiC/环氧复合材料的制备及其摩擦学性能

Preparation and Tribological Properties of Modified MoS/SiC/Epoxy Composites.

作者信息

Liu Cheng, Li Meijuan, Shen Qiang, Chen Haikun

机构信息

School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, Hubei, China.

State Key Laboratory of Advanced Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, Hubei, China.

出版信息

Materials (Basel). 2021 Apr 1;14(7):1731. doi: 10.3390/ma14071731.

DOI:10.3390/ma14071731

PMID:33916099

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8036452/

Abstract

In order to improve the tribological properties of epoxy (EP), EP composites were prepared by filling different proportions of silicon carbide (SiC) particles and molybdenum disulfide (MoS) powder. SiC and MoS particle surfaces were modified by the silane coupling agent KH560 to improve dispersion and avoid agglomeration of the inorganic particles in the EP resin matrix. The effect of different proportions of modified MoS content on the tribological properties of SiC/EP composites, and the wear mechanism of the worn surface, were investigated when the filler content was fixed at 55 wt.%. The results indicate that the friction and wear properties of modified MoS/SiC/EP composites are better than SiC/EP composites without modified MoS. When the modified MoS content is 4 wt.%, the average friction coefficient and volume wear rate of the modified MoS/SiC/EP composite are 0.447 and 14.39 × 10 mm/N·m, respectively, which is reduced by 10.06% and 52.13% in comparison with that of the 55 wt.% SiC/EP composite. Furthermore, the average friction coefficient of a composite containing 4 wt.% MoS is 16.14% lower, and the volume wear rate is 92.84% lower than that of pure EP.

摘要

为了改善环氧树脂（EP）的摩擦学性能，通过填充不同比例的碳化硅（SiC）颗粒和二硫化钼（MoS）粉末制备了EP复合材料。用硅烷偶联剂KH560对SiC和MoS颗粒表面进行改性，以改善无机颗粒在EP树脂基体中的分散性并避免团聚。当填料含量固定为55 wt.%时，研究了不同比例的改性MoS含量对SiC/EP复合材料摩擦学性能的影响以及磨损表面的磨损机制。结果表明，改性MoS/SiC/EP复合材料的摩擦磨损性能优于不含改性MoS的SiC/EP复合材料。当改性MoS含量为4 wt.%时，改性MoS/SiC/EP复合材料的平均摩擦系数和体积磨损率分别为0.447和14.39×10⁻⁶mm³/N·m，与55 wt.% SiC/EP复合材料相比分别降低了10.06%和52.13%。此外，含4 wt.% MoS的复合材料的平均摩擦系数比纯EP低16.14%，体积磨损率比纯EP低92.84%。