聚乙烯蜡裂解α-烯烃合成聚α-烯烃基础油

摘要

The α-olefin was prepared by pyrolysis of polyethylene wax,which was used as the raw material to synthesize poly-α-olefin(PAO)under the action of AlCl3. The effects of catalyst amount,reac-tion time and temperature on the properties and yield of polyalpha-olefins were investigated. The results showed that at AlCl3amount of 3%(mass fraction,raw material quantity as the benchmark),reaction time of 3 h and reaction temperature of 60 ℃,the yield of synthetic polyolefin oil is 63%,the viscosity is 29. 71 mm2/s(40 ℃)and 5. 74 mm2/s(100 ℃),and the viscosity index is 145 with a pour point of -43 ℃.%以聚乙烯蜡裂解产物α-烯烃为原料,在AlCl3催化作用下合成聚α-烯烃(PAO).考察催化剂用量、反应时间、反应温度对合成PAO性质及收率的影响.结果表明:在AlCl3用量为3%(占原料的质量分数)、反应时间为3 h、反应温度为 60 ℃的条件下,合成 PAO 的 40 ℃运动黏度为 29. 71 mm2/s,100 ℃运动黏度为 5. 74 mm2/s,黏度指数为 145,倾点为-43 ℃,合成 PAO 的收率为 63%.