新型多功能润滑油粘度指数改进剂的研制

摘要

以乙丙共聚物为原料,经马来酸酐引发接枝后与多烯多胺反应制备了分散型乙丙共聚物粘度指数改进剂.研究了马采酸酐、胺化物用量、接枝反应温度及胺化温度对粘度指数改进剂的影响.结果表明,F1为引发剂,马来酸酐、胺化物加入量分别为乙丙共聚物质量的12％、7％,接枝反应温度为160℃,胺化温度为140℃时,接枝率为4.1％.该产品具有优良的剪切稳定性、增稠能力和分散性能.%Dispersant ethylene-propylene copolymer viscosity index improver is prepared by polyethylene-polyamine and maleic-anhydride modified ethylene-propylene copolymer, which are grafted by ethylene-propylene copolymer and maleic-anhydride. The effects of maleic-anhydride, polyethylene-polyamine, temperature of grafting reaction and amination temperature on viscosity index improver are investigated. The result shows that the products have good shear stability, thickening ability and decentralization using F1 as initiator. The graft rate is 4.1% when the weights of maleic-anhydride and polyethylene-polyamine are 12% and 7%, respectively, temperature of grafting reaction is at 160 ℃ and amination temperature is at 140 ℃