蓖麻油酸三羟甲基丙烷酯的合成工艺条件及性能

以蓖麻油和三羟甲基丙烷为原料,通过皂化,酯化合成蓖麻油酸三羟酯,研究了原料配比,催化剂用量,反应温度,反应时间等对酯化反应的影响,最佳条件为：蓖麻油与三羟甲基丙烷的摩尔比为5∶4,,催化剂用量为蓖麻油酸质量的0.5%,反应温度180～200℃,反应时间4 h.生成的蓖麻油酸三羟甲基丙烷酯为黄色透明液体,产率为86.48%,用红外光谱进行了定性分析,证明了目标产物的存在,采用了热重/差热综合热分析仪研究了其热稳定性,采用了运动粘度测定仪研究了其粘温性能.结果表明：其润滑性能、热稳定性、粘温性能满足工艺润滑油基础油的要求.

Synthetic technology of castor oleic acid Trimethylolpropane ester

With castor oil and Trimethylolpropane as raw material,castor oleic acid ester was synthesized by the saponification and esterification.The ratio of raw material,catalyst dosage,reaction temperature and reaction time on the esterification of influence was studied.And the best conditions were as follows：castor oil and Trimethylolpropane mole ratio of 5∶4,catalyst dosage of the mass of oleic acid castor for 0.5%,reaction temperature 180—200 ℃,reaction time 4 h.The Castor oleic acid Trimethylolpropane ester is a kind of yellow transparent liquid,production rate is 86.48%.It is proved the existence of the target product with infrared spectra of qualitative analysis.The results show that： the lubrication properties,thermal stability,glue temperature performance meet the technological requirements of base oil lubricating oil.