脂肪酸咪唑啉衍生物对YG8硬质合金的摩擦学性能研究

发布时间：2018-06-22 17:46

本文选题：咪唑啉 + 水溶性添加剂　；参考：《润滑与密封》2017年12期

【摘要】：以6-氨基己酸与二乙烯三胺(DETA)、三乙烯四胺(TETA)和四乙烯五胺(TEPA)为原料,分别合成3种水溶性咪唑啉类衍生物。通过MMW-1B立式万能摩擦磨损试验机检测3种衍生物作为水基润滑剂对YG8硬质合金的摩擦学性能,利用SEM考察YG8钢球的磨损表面形貌,并用vk-9700激光共聚焦显微镜、EDS和XPS分别对对YG8钢球磨斑进行3D测试、元素分布分析和化学成分分析。结果表明:所合成的3种添加剂都具有很好的承载能力、水溶性和减摩、抗磨性能,并且以TEPA链的添加剂的抗磨效果最好,TETA链的添加剂的减摩性能最好;在摩擦过程中,添加剂在YG8钢球表面发生物理、化学吸附,形成一层有机氮保护膜,其中高含氮量比低含氮量咪唑啉添加剂的磨损表面更加光滑,减摩和抗磨性能最好。
[Abstract]:Three water-soluble imidazoline derivatives were synthesized from 6-aminohexanoic acid, diethylenetriamine (DETA), triethylenetetramine (TETA) and tetraethylenepentylamine (TEPA), respectively. The tribological properties of three kinds of derivatives used as water-based lubricant to YG8 cemented carbide were tested by MMW-1B vertical universal friction and wear tester. The wear surface morphology of YG8 steel ball was investigated by SEM. The grinding spot of YG8 steel ball was measured by vk-9700 laser confocal microscope and EDS respectively. The element distribution and chemical composition were analyzed. The results show that all of the three additives have good bearing capacity, water solubility and antifriction, and the antiwear effect of the additives of TEPA chain is the best than that of the additive of TETA chain, and the antiwear performance of the additives of TEPA chain is the best, and in the process of friction, the antiwear effect of the additives of TEPA chain is better than that of the additive of TETA chain. The additive is physically and chemically adsorbed on the surface of YG8 steel ball to form an organic nitrogen protective film. The wear surface of the additive with high nitrogen content is smoother than that with low nitrogen content Imidazoline additive, and the antifriction and antiwear properties of the additive are the best.
【作者单位】：华东交通大学材料科学与工程学院;
【基金】：国家自然科学基金项目(21363008;21563012) 江西省科技厅项目(20143ACB20003;20162BCB22020) 江西省教育厅项目(GJJ150484) 华东交通大学科技项目(15LX01)
【分类号】：TG135.5

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