摘要
为开发苛刻服役环境下高性能、长寿命的有机润滑涂层,以氨基丙基三乙氧基硅烷(KH550)为原料制备了八氨基倍半硅氧烷(NH2-P0SS),并将其添加到聚酰胺酰亚胺基涂层(HM-1100A)中,研究了改性前后涂层的结构、力学性能和摩擦性能。结果表明:经NH2-P0SS改性后的HM-1100A涂层相比原始涂层具有更高的硬度、内聚强度及较低的表面能,并且涂层的摩擦性能有显著提高。通过对比HM-1100A、KH550改性HM-1100A及NH2-P0SS改性HM-1100A3种涂层的热重、硬度、表面能和摩擦性能,研究了其作用机理,分析发现nh2-poss独特的中空笼形结构和八官能团的引人有效提高了涂层的物理机械性能和摩擦性能。
In order to develop the organic lubrication coatings that can be used in harsh service environment, an octa (3-amino propyl) polyhedral oligomeric silsesquioxane (NH2-POSS)w as prepared from aminopropyltriethoxysilane (KH550), which was then incorporated into the polyamide-imide based lubrication coatings HM- 1100 A . The structure, mechanical and abrasion properties of the lubrication coatings before and after modification were investigated in detail. The results showed that the modified HM- 1100A coatings with NH2- POSS provided better hardness and cohesion, lower surface enenergy and increased wear resistance. Through a comparasion test of three coatings of HM- 1100 A , KH550 modified HM-1100A and NH2- POSS modified HM- 1100 A , in terms of TG , hardness, surface energy and wear resistance, the mechanism was investigated and found that due to the unique hollow cage structure of NH2- POSS , and introduction of octa-functional group, the mechamical properties and wear resistance of the coatings were improved significantly.
作者
俞传永
陈磊
李红轩
周惠娣
陈建敏
Yu Chuanyong;Chen Lei;Li Hongxuan;Zhou Huidi;Chen Jianmin(State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;University of Chinese Academy of Sciences,Beijing 100049, China)
出处
《涂料工业》
CAS
CSCD
北大核心
2019年第5期8-15,共8页
Paint & Coatings Industry
关键词
硅烷偶联剂
多面体低聚倍半硅氧烷
杂化改性
机械性能
摩擦性能
silane coupling agent
polyhedral oligomeric silsesquioxane
hybrid modification
mechanical properties
tribological properties
作者简介
通信联系人:陈磊;通信联系人:李红轩.
