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利用四球试验机研究了长链胺对含磷添加剂抗磨性能的影响。实验中发现,相互作用程度按一级胺>二级胺、三级胺顺序依次减小。X射线光电子能谱(XPS)发现磨斑上胺以吸附态形式存在,未发生降解;而含磷添加剂与表面发生了反应,生成磷酸铁。差热分析(DTA)发现高温下胺并未与含磷添加剂发生相互反应。能量色散谱(EDX)指出胶的引入减小含磷添加剂与表面的反应程度。因此,本文提出了胺与含磷添加剂相互作用的机理,即胺优先吸附在表面上阻止了含磷添加剂与表面的反应,从而降低了其抗磨性能。
The influence of long-chain amines on anti-wear properties of phosphorus-containing additives was investigated using a four-ball testing machine. The experiment found that the degree of interaction according to the order of the primary amine> secondary amine, tertiary amine order decreased. X-ray photoelectron spectroscopy (XPS) found that the amine on the mottle was present in the adsorbed state without degradation, whereas the phosphorus-containing additive reacts with the surface to form iron phosphate. Differential thermal analysis (DTA) found that amines do not react with phosphorus-containing additives at high temperatures. Energy dispersive spectroscopy (EDX) indicates that the introduction of gum reduces the degree of reaction of the phosphorus-containing additive with the surface. Therefore, this paper presents the mechanism of interaction between amine and phosphorus-containing additives, that is, the preferential adsorption of amine on the surface prevents the reaction of the phosphorus-containing additive with the surface, thereby reducing its anti-wear properties.