摘要
分别研究了不同含量碳纤维(CF)、玻璃纤维(GF)填充聚四氟乙烯(PTFE)复合材料在硫酸溶液中和干摩擦条件下的摩擦学性能,同时考察了PTFE复合材料在酸中的腐蚀行为,探讨了相关机理。结果表明,在酸中GF能够提高PTFE的耐磨性,比CF在提高PTFE耐磨性方面具有更好的优势。就酸溶液中的耐磨性和耐腐蚀性而言,15%(质量分数,下同)是填料的最佳含量,此时GF和CF填充的PTFE的耐磨性分别较纯PTFE提高了7.7和4.4倍。当填料的含量超过15%时,复合材料的耐磨性和耐腐蚀性均下降,主要是由于此时犁削和磨粒磨损是PTFE复合材料的主要磨损机制。由于酸溶液的冷却和润滑作用,硫酸溶液中PTFE复合材料的摩擦因数大幅降低,但酸溶液抑制了对摩面上转移膜的形成。
The tribological behavior and corrosion resistance of glass fibers （GF） and carbon fibers （CF） filled PTFE in both dry condition and sulfuric acid were investigated. In sulfuric acid, the optimal content of fillers was 15 wt%, which resulted in the wear resistance of PTFE/GF and PTFE/CF composites increasing 7.7 and 4. 4 times based on neat PTFE, respectively. When the filler content was higher than 15 wt%, furrow and abrasive wear constituted the main mechanisms for PTFE composites. Owing to the cooling and lubricating effects of acid media, the friction coefficient of PTFE composites decreased more obviously than that in dry condition. However, the acid inhibited the formation of transfer film on the counterpart.
出处
《中国塑料》
CAS
CSCD
北大核心
2009年第9期59-62,共4页
China Plastics
关键词
聚四氟乙烯
碳纤维
玻璃纤维
复合材料
摩擦
磨损
腐蚀
酸溶液
polytetrafluoroethylene
carbon fiber
glass fiber
composite
friction
wear
corrosion
acid solution
