Phosphate lubricant as well as preparation and application thereof

The invention relates to a phosphate lubricant as well as preparation and application thereof, and the lubricant is tris (hydroxymethyl) phosphate oxide. The structure of the lubricant is shown as the following formula: R is alkyl. The preparation method specifically comprises the following steps: taking trimethylolphosphine oxide and fatty acid, uniformly mixing, heating to 40-90 DEG C, adding a catalyst, heating to 100-190 DEG C under a vacuum condition, continuously reacting for 2-12h to obtain crude ester, and carrying out post-treatment to obtain the phosphate lubricant. Compared with the prior art, the phosphate lubricant prepared by the invention has excellent lubricity and extreme pressure antiwear property, and also has excellent biodegradability. 本发明涉及一种磷酸酯类润滑剂及其制备与应用，所述润滑剂为三羟甲基氧化磷酸酯，结构如下式所示：R为烃基。所述制备方法具体为：取三羟甲基氧化磷和脂肪酸，混合均匀，升温至40-90℃加入催化剂，再在真空条件下升温至100-190℃继续反应2-12h，得到粗酯，经后处理得到所述磷酸酯类润滑剂。与现有技术相比，本发明制得的磷酸酯类润滑剂具有优异的润滑性和极压抗磨性，同时也具有优良生物降解性。