摘要
采用双螺杆挤出机共混制备尼龙 6 /纳米Al2 O3 复合材料 ,考察了复合材料的硬度及与铜摩擦副的摩擦磨损性能。试验表明 ,加入纳米Al2 O3 可使尼龙 6的硬度提高。在低载荷时 ,复合材料的摩擦系数随载荷的增加而减小 ;当载荷超过一定值后 ,摩擦系数增大 ;载荷一定时 ,摩擦系数随纳米Al2 O3 含量的增加呈上升趋势。当纳米Al2 O3含量达到 10份时 ,复合材料的磨损量较小 ;当纳米Al2 O3 超过 10份时 ,纳米Al2 O3 粒子的团聚会造成其与基体尼龙 6的结合力降低 ,最终导致尼龙 6 /纳米Al2 O3
The nylon 6/nano Al 2O 3 composite is prepared by blending in twin screw extrusion machine. The rigidity and friction and wear properties against copper friction counterface are studied. The testing results show that the addition of nano Al 2O 3 can increase rigidity of nylon 6. The friction coefficient of composite decreases with the increasing of load under low load, and the friction coefficient increases when the load exceeds definite value. Under certain load, the friction coefficient increases with the increasing of nano Al 2O 3 content. When the nano Al 2O 3 content is 10 phr, the wear mass loss is the least. And when exceeding 10 phr, the conglobation of nano Al 2O 3 particle may decrease the bound force against nylon 6 matrix which results in the increasing of wear mass loss.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2004年第6期8-10,共3页
Engineering Plastics Application
