可生物降解型哌嗪衍生物的摩擦学性能

为了研究新型哌嗪衍生物的可生物降解性和摩擦学性能,设计合成了环保型润滑油添加剂1,4-双(二硫代甲酸乙酰乙胺)哌嗪(DAP)。采用元素分析和红外光谱进行结构表征,考察了其热稳定性能、可生物降解性和在液体石蜡油(LP)中的极压抗磨性能,利用扫描电子显微镜(SEM)和X射线光电子能谱仪(XPS)分析了钢球的磨损表面形态。结果表明:合成的化合物热稳定性能好并具有良好的可生物降解性;化合物添加到LP中后具有很好的极压抗磨性能,并在摩擦过程中发生了化学吸附及摩擦化学反应,在摩擦区域金属表面上形成了一层复杂边界润滑膜,从而起到了良好的抗磨减摩的作用。

Tribological Properties of Biodegradation Piperazine Derivative

In order to study biodegradation properties and tribology performance of the piperazine derivatives,1,4-di (dithiocarbamate N-acetylethylamine) piperazine (DAP) was designed and synthesized supposed to be used as environmental friendly lube additives.The structure of samples was characterized by infrared spectrum (IR) and elemental analysis,and the thermal stability and biodegradation properties as well as extreme pressure antiwear performance in liquid paraffin (LP) were studied.In addition,scanning electron microscope(SEM) and X-ray photoelectron spectrometer (XPS) were employed to analyzed the surface wear topography of steel ball after test.Results showed that the obtained DAP had fair thermal stability and good biodegradability.With adding DAP into LP,the sample possessed excellent extreme pressure antiwear performance,and tribochemistry reaction and chemical adsorption occurred during friction process.Furthermore,a boundary lubrication film was formed on the metal surface,which could play the role of anti-wear and reducing friction.