【摘要】 以新戊二醇(NPG)和癸二酸(SA)为原料,经酯化反应合成了"寡聚物"(1),测定1的寡聚度(m)。当n(NPG)∶n(SA)=1.4~3.0时,1的m在5.44~1.61,收率95%以上。将1与油酸进行酯化得到混合酯(2),收率83%~89%。测定了2的粘度和热氧化稳定性,结果表明2的粘度随着m的增大而增大,热氧化稳定性随m的增大而提高。2在40℃的粘度为(116~273)mm2.s-1,粘度指数均超过200,凝点低于-40℃。1和2的结构经IR表征。更多还原

【Abstract】 Oligomers(1) were synthesized from neopentyl glycol(NPG) and sebacic acid(SA).The degree(m) of 1 were 5.44~1.61 and the yield of 1 was over 95% when n(NPG) ∶n(SA)=1.4~3.0.The mixed esters(2) in yields of 83%~89% were prepared by the esterification of 1 with oleic acid.The viscosity and thermo-oxidative stability of 2 were determined.The results showed that the viscosity and thermo-oxidative stability of 2 increased with m increasing.Viscosity of 2 at 40 ℃ was in the range of(116~273) mm2·s-1,and has very high viscosity indices higher than 200,a solidifying point below-40 ℃.The structures of 1 and 2 were identified by IR.更多还原