纳米SiO_2包覆硅灰石填充改性尼龙1010的摩擦学性能  

Tribology Performance of Nano-SiO_2 Coated Wollastonite Filled Nylon-1010

作　　者：欧雪梅[1] 吴静晰[1] 赵宇龙[1] 刘继宇[1] 邹段练[1] 

机构地区：[1]中国矿业大学材料科学与工程学院,江苏徐州221008

出　　处：《润滑与密封》2007年第11期51-54,156,共5页Lubrication Engineering

基　　金：国家杰出青年科学基金项目(50225519);中国矿业大学科技专项基金项目(ZK0005);中国矿业大学科技基金项目(E200403)

摘　　要：以硅灰石和水玻璃为主要原料,用无机化学沉积法制备纳米SiO2包覆硅灰石复合颗粒;利用扫描电镜和X射线衍射分析对包覆效果进行表征。将复合颗粒填充到尼龙1010中,对此复合材料进行拉伸、硬度和摩擦磨损实验,并与分别用硬脂酸改性硅灰石、未处理硅灰石填充的尼龙复合材料进行对比。结果表明,将纳米颗粒包覆硅灰石填充到尼龙1010中,可获得较好的结合界面,提高了尼龙复合材料的拉伸强度和硬度,比硬脂酸改性和未经处理的硅灰石更有效地改善了尼龙的摩擦学性能。Wollastonite powder coated by nano-SiO2 was prepared by wollastonite and soluble glass in a chemical precipitation method,and analysed with SEM and XRD. The tribological and mechanical properties of nylon-1010 composites filled by nano-coated wollastonite were investigated through tensile test, hardness test and the sliding wear test, which were contrasted to nylon-1010 filled by wollastonite modified by stearic acid and no-modified. The results show that nylon-1010 composites filled by the nano-coated powders obtain good interfacial binding, which conduces to the increasing of tensile strength and hardness and the better tribological properties than those filled with wollastonite treated by stearic acid and wollastonite without modification.

关 键 词：纳米包覆 二氧化硅/硅灰石复合颗粒 尼龙1010 摩擦与磨损 

分 类 号：TH117.1[机械工程—机械设计及理论]