摘要
合成了磷氮型极压抗磨添加剂亚磷酸二丁酯-马来酸二丁酯-胺衍生物(Ⅰ)和亚磷酸二丁酯-丙烯酸酯-胺衍生物(Ⅱ)。研究表明烷基链较长时油溶性好,用伯胺时极压抗磨性好。经比较,Ⅰ中采用十二胺衍生物(Ⅰ-4)时,其极压抗磨性最好(WSD=0.38mm,P_B=1176N,铜片腐蚀结果为1b),它在基础油(750SN)中最佳用量为2%(wt)。用差热分析、红外光谱和俄歇尔电子能谱初步研究表明:磷氮剂(Ⅰ-4)的作用机理是在摩擦表面形成一种含有磷酸铁的化学保护膜。
Two kinds of extreme pressure-antiwear additives of P-N type were synthesized. The one (Ⅰ) is dibutyl phosphite-dibutyl maleate-amine derivative and the other (Ⅱ) is dibutyl phosphite-alkyl acrylate- amine derivative. It was found that they are both well oilsoluble when they possess longer alkyl chain and have well extreme pressure-antiwear property when primary amine is used. By comparison, the dibutyl phosphite-dibutyl maleate-lauryl amine (Ⅰ-4) has the best extreme pressure-antiwear property (WSD=0.38mm, P_B=1176N, copper corrosion=1b). The preferable amount of (Ⅰ-4)in base oi1(750 SN)is 2% (wt). The functional mechanism of (Ⅰ-4) may be the formation of iron phosphate on the wear surface, as proved by DTA, IR, and AES.
关键词
油品
抗磨极压剂
磷氮型
磨损
extreme pressure additive
phosphite
wear
additive agents
differential thermal analysis
mechanism
