CAJ | 학술논문

新戊二醇(NPG)和己二酸(AA)通过酯化反应合成了"低聚物"中间体(1).当n(NPG):n(AA)＝1.5～3.0时,1的聚合度(m)在4.34～2.10,收率97%.以对甲苯磺酸为催化剂,甲苯为带水剂,1与油酸进行酯化得到复合酯(2),收率83%～89%.测定了2的黏度、黏度指数、氧化稳定性、生物降解率、摩擦磨损性能和热稳定性.结果表明,2的黏度和氧化稳定性随着m的增大而增大,100 ℃时的黏度在18.3 mm~2·s~(-1)～30.1 mm~2·s~(-1),黏度指数均超过200,凝点低于-43 ℃,生物降解率＞96%,最大无卡咬负荷(P_B)为784 N,磨斑直径0.40 mm,热分解温度＞300 ℃.1和2的结构经IR表征.
신무이순(NPG)화기이산(AA)통과지화반응합성료"저취물"중간체(1).당n(NPG):n(AA)＝1.5～3.0시,1적취합도(m)재4.34～2.10,수솔97%.이대갑분광산위최화제,갑분위대수제,1여유산진행지화득도복합지(2),수솔83%～89%.측정료2적점도、점도지수、양화은정성、생물강해솔、마찰마손성능화열은정성.결과표명,2적점도화양화은정성수착m적증대이증대,100 ℃시적점도재18.3 mm~2·s~(-1)～30.1 mm~2·s~(-1),점도지수균초과200,응점저우-43 ℃,생물강해솔＞96%,최대무잡교부하(P_B)위784 N,마반직경0.40 mm,열분해온도＞300 ℃.1화2적결구경IR표정.
Oligomer intermidate(1) was obtained by esterification of neopentyl glycol(NPG) with adipic acid(AA). The degree of polymerization(m) of 1 was between 4.34 and 2.10 and the yield was 97% when n(NPG) :n(AA) was varied from 2.0 to 3.0 orderly. The complex esters(2) in yields of 83%~89% were synthesized by esterification of 1 with oleic acid, using p-toluensulfonic acid as the catalyst and toluene as the water carrier. The viscosity, viscosity index, oxidative stability, biodegradability, thermal stability and tribological charactersitics of 2 were determined. The results showed that the viscosity and oxidative stability of 2 increased with m increasing, viscosity at 100 ℃ was between 18.3 mm~2·s~(-1)～30.1 mm~2·s~(-1), all the viscosity indexs were more than 200, the solidifying point was below -43 ℃, biodegradability was more than 96%, the value of P_B was 784 N, the value of wear diameter was 0.40 mm,the temperature of thermal decomposition was above 300 ℃. The structures of 1 and 2 were characterized by IR.