润滑油中纳米硫化银分散体系的制备  

Preparation of Dispersed System of Ag_2S Nanoparticles in Lubrication Oil

作　　者：贺金红[1] 郭强[1] 于伟[2] 乔红斌[1] 

机构地区：[1]上海大学材料科学与工程学院,上海201800 [2]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《润滑与密封》2006年第3期70-72,共3页Lubrication Engineering

基　　金：国家自然科学基金资助项目(59675033)

摘　　要：用烷基膦酸酯和KI共同修饰硫化银粒子的方法在液体石蜡中制备了较为稳定的硫化银分散体系,用傅立叶红外、紫外-可见光谱、透射电镜等对纳米硫化银粒子进行了表征,并初步探讨了其稳定机理。结果表明,KI的加入大大加强了烷基膦酸酯对硫化银的修饰作用,烷基膦酸酯和KI共同修饰的硫化银粒子的分散性较好,粒子大小在20 nm以下,基本无团聚现象,有机相中纳米硫化银的稳定时间可达到6个月以上。The stable dispersed systems of Ag2S nanoparticles modified with EHEHPA and KI in liquid paraffin were prepared,the Ag2S nanoparticles were characterized by FT-IR, TEM and UV-vis, and the stabilizing mechanism was discussed. The experimental results indicated that the modifying effect of EHEHPA on Ag2S nanoparticles could be greatly improved by KI. Ag2S nanoparticles modified with EHEHPA and KI had better dispersibility in liquid paraffin and the particle size was less than 20 nm, no agglomerates were observed,the organic fluid containing Ag2S could be stable for 6 months.

关 键 词：纳米微粒 硫化银 润滑油添加剂 

分 类 号：O648.1[理学—物理化学]