2-硫代丁基-5-巯基-1,3,4-噻二唑Ag[Ⅰ]修饰的钼硅酸盐纳米颗粒的制备及摩擦性能  

Preparation and Frictional Properties of Siliconmolybdate Nanoparticles Modified by 2-Butylthio-5-mercapto-1,3,4-thiadiazole Ag[Ⅰ]

作　　者：王守斌[1] 路培中[1] 张付特[1] 段天宝[1] 叶文玉[1] 

机构地区：[1]河南大学化学化工学院,河南开封475001

出　　处：《化学研究》2008年第1期22-25,28,共5页Chemical Research

基　　金：河南省科技攻关项目(0424270066)

摘　　要：以合成的2-硫代丁基-5-巯基-1，3，4-噻二唑为配体，在醇-水体系中制备了Keggin结构钼硅杂多阴离子有机衍生物的纳米颗粒，以透射电子显微镜、扫描电子显微镜、傅立叶变换红外光谱仪、热分析仪等测试手段对此纳米颗粒的形貌、组成和结构进行了表征，并在机械式四球长时抗磨损试验机上考察了其摩擦学性能．分散型实验结果表明化合物在有机溶剂中分散性能良好，红外光谱表明所合成的纳米颗粒具有杂多酸Keggin骨架结构无机核，透射电镜分析表明颗粒平均粒径约为10nm，热分析娃示分解温度范围为200～300℃．作为新型纳米润滑油添加剂，在最佳添加质量分数为0．05％，负荷300N，摩擦时间30min，转速1450r／min的条件下，与空白相比磨斑直径减小27．9％，摩擦系数减小15．3％．Heteropolyanion molybdenum-silicon nanoparticles modified by 2-butyhhio-5-mercapto-1, 3, 4-thiadiazole Ag[I] were synthesized in solution of water-ethanol. The structure of the nanoparticles was characterized by transmission electron microscope, scanning electron microscope, Fourier transform infrared spectrometer, thermal analyzer, etc. The tribological properties of the nanoparticals as additive in liquid paraffin were investigated with a four-ball tribometer. The dispersity of the compound shows that it disperses well in organic solvents. TEM graph shows that the mean graininess is about 10 nm. The FT-IR spectra indicate that the nanoparticles have a Keggin structure. The DSC and TGA curves of the nanopaticles show that the decomposition temperature of Keggin structure is between 200 and 300℃. As a new-type organic/inorganic composites, when the additive mass ratio is 0.05 %, the load is 300 N, the friction time is 30 rain, and the rotation speed is 1450 r/min, the tribological spot will decrease by 27.9 %, and the friction coefficient will decrease by 15.3 %.

关 键 词：2-硫代丁基-5-巯基-1 3 4-噻二唑 KEGGIN结构 纳米颗粒 摩擦性能 

分 类 号：O613.73[理学—无机化学]