Study of Polyether Synthesis Iubricant Base Oil

Using epoxybutane,benzene NaOH and CH 3 CH 2 OH,an equivalent HVI350 lubricant base oil was produced.The effects of catalyst concentration,composition,polymerization temperature and aging time on the viscosity and yield of the synthetic lubricant base oil were studied.The optimum process conditions are at the polymerization temperature of 90℃,catalyst dosage of 0.5%,starting agent of 0.5%,aging time of 7.5 h, and polymerization pressure of 0.3 MPa with 60.7% of polyether yield.The polyether kinematic viscosity at 40℃ is 9.93 mm 2 ·s-1,and its viscosity index reaches 120.The property of the new polyether synthetic lubricant base oil is much higher than the one nature of mineral oil.