【摘要】 采用硫化仪分析了微波干燥和热空气干燥天然橡胶(NR)的硫化过程,并根据阿仑尼乌斯方程,探讨了硫化温度对诱导期(tc10)、正硫化时间(tc90)、最大转矩(MH)和最小转矩(ML)的影响。研究结果发现:与热空气干燥NR相比,微波干燥NR的tc10、tc90和ML较小,而MH较大;两种干燥方式干燥的NR的tc10和tc90与硫化温度都能很好符合阿仑尼乌斯方程,且微波干燥NR的阿仑尼乌斯方程中的常数K1、K2和K均大于相对应的热空气干燥NR的阿仑尼乌斯方程中的常数K1、K2和K;微波干燥NR和热空气干燥NR的MH与硫化温度呈很好的线性关系,且微波干燥NR的极限最大转矩(MH0)高于热空气干燥NR的MH0。更多还原

【Abstract】 In this work,the vulcanization of NR dried by microwave and hot-air were analyzed by vulcameter,respectively.And,the effect of vulcanization temperature on induction period of cure(tc10),optimum cure point(tc90),maximum Torque(MH)and minimum induced torque(ML)were studied.The results showed that the tc10,tc90 and MLof NR dried by hot-air were bigger than those of NR dried by microwave,however,the MH of former was bigger.And the tc10,tc90 of NR dried by microwave or hot-air can fit Arrhenius equation well,the K1,K2 and K of Arrhenius equation coefficient for NR dried by microwave were all bigger than those of NR dried by hot-air.With the increase of vulcanization temperature,the MHof NR dried by microwave or hot-air decreases gradually and its trend was well satisfied with linear relationship,and the MH0 of NR dried by microwve was bigger.更多还原