NBR/纳米Fe_3O_4复合材料的物理力学性能与摩擦磨损性能测试  

Test on Physical Mechanical Properties and Tribological Properties of NBR/Nano-Fe_3O_4 Composites

作　　者：王其磊[1] 杨逢瑜[1] 杨倩[1] 关红艳[1] 陈君辉[1] 

机构地区：[1]兰州理工大学磁性物理与磁技术研究所,甘肃兰州730050

出　　处：《高分子材料科学与工程》2010年第10期99-102,共4页Polymer Materials Science & Engineering

基　　金：温州科技交流项目(H20070021);甘肃省自然科学基金项目(3ZS051-A25-031)

摘　　要：为了改善丁腈橡胶(NBR)的摩擦学性能,将具有较好润滑特性的Fe3O4纳米粒子与应用广泛的丁腈橡胶(NBR)进行共混,制备了NBR/纳米Fe3O4复合材料。实验对复合材料的拉伸强度、硬度、300%定伸应力、磁性能等物理力学性能、摩擦磨损性能等进行了测试。并对复合材料的表面微观形态,以及Fe3O4粒子的基本分布进行了分析。结果表明,Fe3O4纳米粒子的加入,使NBR的物理力学性能略有改变,表面微观形态变化较小。摩擦学性能有很大改善,纳米Fe3O4粒子含量为12%时,耐磨效果最优,这可归因于摩擦过程中在摩擦表面形成的一层固体吸附膜。For improving the tribological properties of nitrile butadiene rubber（NBR）,NBR/nano-Fe3O4 composites were prepared by adding nano-Fe3O4 particles which have good lubricity in the widely used NBR. In the experiment,the physical mechanical properties of tensile strength,hardness,300% tensile at definite elongation and magnetic property,friction and wear properties,and the chemical composition were tested. And the surface morphology of composites and distribution of Fe3O4 particles were analyzed. The results shows that after the addition of nano-Fe3O4 particles,the physical mechanical properties of NBR/nano-Fe3O4 composites are slightly changed,and the surface microstructure changes little; but the tribological properties are largely improved and reached to the optimum when mass friction of nano-Fe3O4 is 10%,which is a result of the solid lubricating film formed on the wear surface.

关 键 词：丁腈橡胶/纳米Fe3O4复合材料 物理力学性能 摩擦学性能 表面微观形态 磁性能 

分 类 号：TB383[一般工业技术—材料科学与工程]