摘要
合成了一种甲基封端、侧基含五氯苯基取代基团的有机聚硅氧烷(CPSO),考察了CPSO的粘温性能、倾点、饱和蒸气压及热稳定性能.采用OptimolSRV型微动摩擦磨损试验机评价了CPSO及空间用润滑油全氟聚醚(PFPE)和磷嗪(X-1P)在常温常压下用于GCr15/CuSn合金摩擦副润滑剂的摩擦磨损性能;采用CZM型真空摩擦试验机评价了3种润滑油在真空条件下用于GCr15/CuSn合金和GCr15/9Cr18摩擦副润滑剂的摩擦磨损性能.结果表明:在真空和常温常压条件下,CPSO的减摩和抗磨损性能均优于PFPE及X-1P;与此同时,CPSO具有极低的饱和蒸气压、很低的热挥发损失以及较好的热稳定性和低温流动性.故其在空间飞行器械运动部件润滑领域具有广泛的应用前景.
The polymer of chlorinated-phenyl methyl-terminated silicon oil (code as CPSO) was synthesized. The physical properties such as saturated vapour pressure and evaporation weight loss of CPSO were investigated. The thermal stability of CPSO was analyzed using thermogravimetric analysis in nitrogen atmosphere. The tribological properties of the CPSO as the lubricant for a GCrl5/CuSn alloy contact in air were evaluated using an Optimol SRV oscillating friction and wear tester, using perfluoropolyether (PFPE) and synthetic phosphazine X-1P as the references. Moreover, the tribological properties of the CPSO as the lubricant for a GCr15/9Crl8 contact in vacuum of a pressure 1 × 10-3 Pa were evaluated using a CZM vacuum friction and wear tester, also using PFPE and X-1P as the references. The results showed that the synthetic silicon oil had excellent thermal stability, low temperature fluidity and very low saturated vapour pressure. It was superior to PFPE and X-1P as the lubricant for the GCrl5/CuSn alloy contact in air and for the GCr15/9Cr18 contact in vacuum of a pressure 1 × 10-3 Pa. Therefore, the synthetic silicon oil CPSO as the liquid lubricant could fine promising application in the lubrication of various space mechanisms working in harsh conditions such as high vacuum, low temperature, and strong irradiation.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2005年第3期254-257,共4页
Tribology
基金
国家自然科学基金委创新研究群体科学基金资助项目(50421502).
关键词
硅油
航天润滑剂
摩擦磨损性能
Fluidity
Friction
Physical properties
Synthesis (chemical)
Thermodynamic stability
Thermogravimetric analysis
Tribology
Wear of materials
