油溶性银纳米颗粒的制备及摩擦学行为  

Preparation and Tribological Properties of Oil-Soluble Ag Nanoparticles

作　　者：张付特[1] 路培中[1] 李明元[2] 叶文玉[1] 

机构地区：[1]河南大学化学化工学院,开封475001 [2]广西大学化学化工学院,南宁

出　　处：《应用化学》2008年第2期194-198,共5页Chinese Journal of Applied Chemistry

基　　金：河南省科技攻关项目(0424270066)

摘　　要：以2,5-二(5-硫酮-1,2,4-二噻唑-3-甲酰胺基)-对苯二甲酸(BtdyTA)作为修饰剂,以NaBH4为还原剂,在AgNO3水溶液中合成了BtdyTA表面修饰的银纳米颗粒,采用透射电子显微镜、傅立叶红外转换光谱和热分析测试技术表征了纳米颗粒的形貌、结构和热稳定性,并在四球摩擦试验机上测试了表面修饰银纳米颗粒的减摩抗磨性能。结果表明,表面修饰的银纳米颗粒粒径分布均匀,平均粒径约8nm,无团聚现象,可很好地分散于液体石蜡等有机溶剂中,作为基础润滑油添加剂,具有较好的减摩抗磨效果,可以较好地减小摩擦系数和磨斑直径。2,5-Bis （ 5-thione-1,2,4-dithiazole-3-ylcarbamoyl ） -terephthalic acid （ BtdyTA）, which was synthesized from 3-amido-1,2,4-dithiazole-5-thione（ ADTT）, was used to modify the surface of silver nanoparticles with NaBH4 as the reducing agent in AgNO3 solution. The morphology, structure and stability of the BtdyTA- coated Ag （Ag-BtdyTA） nanoparticles were characterized with transmission electron microscopy （TEM）, Fourier transform infrared spectrometry（FT-IR） and thermogravimetric analysis（TG）. Anti-wear properties of the Ag-BtdyTA nanoparticles were tested with a four-ball tribological testing machine. The results show that the Ag-BtdyTA nanoparticles exhibited a homogeneous grain size distribution, and the average diameter was about 8 nm without aggregation, which enable the Ag-BtdyTA nanoparticles to be used as an oil additive. The Ag-BtdyTA nanoparticles had good anti-wear properties in liquid paraffin, and they can improve the anti-wear properties of the base oil.

关 键 词：BtdyTA 银 纳米颗粒 摩擦学性能 表面修饰 

分 类 号：O613.5[理学—无机化学]