摘要
用热重法 微商热重法 (TG DTG)和差热分析 (DTA)研究了不同交联程度和不同硫化工艺条件的过氧化物预硫化胶乳 (PPVL)胶膜的热氧稳定性。结果表明 ,PPVL胶膜的热氧稳定性与交联程度有关。交联程度较低 (溶胀指数较高 )时 ,起始降解温度较高 ;交联程度较高 (溶胀指数较低 )时 ,起始降解温度较低。不同硫化工艺对PPVL胶膜的热氧稳定性有一定影响 ,起始降解温度和DTG峰温度与起始放热温度和第一放热峰温度之间有呈反比的趋势。
The thermo oxidative stability of peroxide prevulcanzed latex(PPVL) film with different crosslink level and different vulcanization process was studied by using thermogravimetry (TG) derivative thermogravimetry(DIG)and detrivative thermagravimetric analysis(DTA) . The results show that the thermo oxidative stability relates to the crosslink level. When the crosslink level is low (the swelling index is high),the initial degradation temperature is high, while the crosslink level is high(the swelling index is low), the initial degradation temperature is low. Different vulcanization process has a certain effect on the thermo oxidative stability of PPVL film. The tendency of the initial degradation temperature and DTG peak temperature shows the inverse relation with that of the initial exothermal temperature and the first exothermal peak temperature.
出处
《特种橡胶制品》
2002年第2期8-10,14,共4页
Special Purpose Rubber Products
基金
中国热带农业科学院基金资助项目
