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润滑油中纳米硫化银分散体系的制备

Preparation of Dispersed System of Ag₂S Nanoparticles in Lubrication Oil

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【Author】 He Jinhong~1 Guo Qiang~1 Yu Wei~2 Qiao Hongbin~1(1.School of Materials Science and Engineering,Shanghai University,Shanghai 201800,China;2.National Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China)

【机构】上海大学材料科学与工程学院；北京理工大学爆炸科学与技术国家重点实验室；上海大学材料科学与工程学院上海201800；上海201800；北京100081；

【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。更多还原

【Abstract】 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.更多还原