不同条件下两种纤维增强MC聚酰胺复合材料摩擦磨损性能研究

Study on Friction and Wear Properties of Fiber-Reinforced Monomer-Casting Polyamide 6 Composites Under Different Wearing Conditions

制备了单体浇铸聚酰胺(MCPA)、纤维质量占比30%的玻璃纤维增强MC聚酰胺(GFMCPA)及体积占比35%的碳纤维增强MC聚酰胺(CFMCPA),分别将3种材料在干摩擦、洁净水、干砂、水砂4种不同摩擦条件下进行摩擦磨损性能实验,并对实验结果进行对比分析。结果表明,干摩擦及洁净水条件下,CFMCPA的摩擦因数(fCF)<GFMCPA的摩擦因数(fGF)<MCPA的摩擦因数(fMC);干砂及水砂条件下,fMC<fCF<fGF;3种材料在不同摩擦条件下的摩擦因数排序均为:洁净水条件下的摩擦因数(fW)<水砂条件下的摩擦因数(fWS)<干摩擦条件下的摩擦因数(fD)<干砂条件下的摩擦因数(fDS);不同材料在4种摩擦条件下的体积磨损率排序均为:干摩擦条件下的磨损率(WD)<洁净水条件下的磨损率(WW)<水砂条件下的磨损率(WWS)<干砂条件下的磨损率(WDS);不同摩擦条件下3种材料的体积磨损率排序均为:GFMCPA的磨损率(WGF)<CFMCPA的磨损率(WCF)<MCPA的磨损率(WMC);4种条件下,各材料的摩擦磨损性能各有高低,可以根据具体的性能要求,选择使用。

Monomer-casting polyamide 6(MCPA),the glass fiber-reinforced MCPA(GMCPA)at a fiber content of30 wt%and the carbon fiber-reinforced MCPA(CFMCPA)at a fiber content of 35 vol%were prepared,and their friction and wear properties were investigated under the four wearing conditions of dry friction,clean water,dry sand and water sand.The results indicated that the friction coefficient of samples presented a decrease trend by the order of CFMCPA<GFMCPA<MCPA under the conditions of dry friction and clean water and by the order of MCPA<CFMCPA<GFMCPA under the conditions of dry sand and water sand.For the same sample under different conditions,its friction coefficient exhibits a drop by the order of clean water<water sand<dry friction<dry sand,and its shows an increase trend by the order of dry friction<clean water<water sand<dry sand.However,for the different samples under the same condition,their volumetric wear rates decrease by the order of GFMCPA<CFMCPA<MCPA.The experimental results demonstrated that the friction and wear properties of these three samples had their own characteristics under the four wearing conditions,and they could be used according to the specific requirement for their performance.