陶瓷粉填充尼龙1010的摩擦磨损性能研究

以微米级有机陶瓷粉末为增强材料,用KH-550硅烷偶联剂对陶瓷粉末进行表面处理制备出陶瓷/尼龙复合材料,在环-块摩擦磨损试验机上评价了陶瓷/尼龙复合材料与钢配副的摩擦磨损性能,并对其力学性能进行测试.结果表明:陶瓷粉末含量在5%～25%时,陶瓷/尼龙1010复合材料的摩擦系数增至0.46左右,当陶瓷粉末含量为30%～40%时,其摩擦系数降至0.41;含5%～40%陶瓷粉末的陶瓷/尼龙1010复合材料的相对磨损率为纯尼龙相对磨损率的26%～42%;陶瓷粉末填充尼龙可以提高复合材料的力学性能,其表面硬度随着陶瓷粉含量增加而呈线性增长,拉伸强度提高16.7%;硅烷偶联剂能够改善陶瓷粉末与尼龙基体的结合强度.这是由于复合材料表面熔融和粘着转变为浅的犁沟,致使陶瓷/尼龙1010复合材料的相对磨损率减小.

Investigation on Tribological Behaviors of Nylon 1010 Filled with Ceramic Powders

Tribological and tensile properties of nylon 1010 composite,filled with micro scale ceramic powder with surface treatment by silane coupling agents(KH-550),was investigated.Ceramic powders increased friction coefficient of the composite as well as decreased wear rate,and it also improved the composite's tensile strength in a certain range of contents.Ring on block tests show that ceramic/nylon composite with 5%~25% ceramic powder exhibited friction coefficient as high as 0.46,and friction coefficient decreased to 0.41 when containing 30%~40% ceramic powder.Ceramic/nylon composite with 5%~40% ceramic powder exhibited lower wear rate which is only 26%~42% of that pure nylon did.Ceramic powder improves nylon's mechanical properties,and its surface hardness increased linearly as fraction of ceramic powder increased.Ceramic powder increase tensile strength by 16.7% due to better bonding between ceramic powder and nylon.Ceramic/nylon composite exhibited lower wear rate because some surface nylon melted and shallow grooves formed instead of adhesion dominated in wear of pure nylon.