摘要
研究了石墨与铜包石墨填料同ＰＴＦＥ 聚合物基体的结合状态以及铜层厚度对铜包石墨－ＰＴＦＥ 复合材料的布氏硬度及摩擦学性能的影响。结果表明：铜包石墨处理可以显著提高填料与ＰＴＦＥ 的界面结合强度；复合材料的布氏硬度随铜层厚度的增加而增大，并逐渐趋于稳定；铜包石墨－ＰＴＦＥ的摩擦系数随铜层厚度的增大而逐渐增大，当铜层厚度大于１．５ μｍ 时，这种变化逐渐变得缓和，而铜包石墨－ＰＴＦＥ的磨损率则随铜层厚度的增加而呈线性降低的趋势。作者认为，填料的表面增强改性是提高聚合物复合材料摩擦学性能的一种有效的方法。
The combination status between polytetrafluoroethylene(PTFE) and fillers,graphite and Cu coated graphite(CCG),are investigated respectively .Meanwhile,the influence of the thickness of Cu coating on the hardness and tribological behaviors of composites is also studied.It is found that the treatment of Cu coating graphite can improve obviously the coherent strength between the filler and PTFE.The hardness of composites increases firstly with the increasing of the thickness of Cu coating,and reaches the stable state gradually when coating thickness is higher than 1.5 μm.The wear rates of composites decreases linearly with the changes of thickness of Cu coatings.Based on the experimental results,it is considered that the surface improvement of fillers is an efficient way to promote the tribological behaviors of polymer composites.
出处
《淮海工学院学报（自然科学版）》
CAS
1999年第4期7-10,共4页
Journal of Huaihai Institute of Technology:Natural Sciences Edition
基金
国家自然科学基金资助项目
