热重法研究高密聚乙烯膜的热稳定性及寿命(英文)  

Thermogravimetry Study of the Thermal Stability and the Lifetime of High Density Polyethylene Film

作　　者：杨惠芳[1] 张建军[2] 张建玲[3] 

机构地区：[1]石家庄铁道学院材料系,石家庄050043 [2]河北师范大学实验中心,石家庄050016 [3]中国科学院化学研究所,北京100050

出　　处：《化学研究》2001年第4期34-36,共3页Chemical Research

摘　　要：用TG技术研究了高密聚乙烯膜的热稳定性 ,得到了失重为 5 % ,10 % ,15 %为寿终指标时的寿命方程分别为lgτ =1.2 43× 10 4 /T - 19.34,lgτ =1.6 0 9× 10 4 /T - 2 5 .17andlgτ=1.794× 10 4 /T - 2 8.0 0用Ozawa法和Kissinger法得到活化能分别为 2 35 .9kJ/mol和 2The thermal stability of high_density polyethylene (HDPE) film was studied by thermogravimetry. The lifetime equations at various weight loss ratio of 5%, 10% and 15% were determined as lgτ=1.243×10 4/T-19.34, lgτ=1.609×10 4/T-25.17 and lgτ=1.794×10 4/T-28.00, respectively. The activation energy E calculated by the Ozawa and the Kissinger method were E o=235.9kJ/mol and E K=232.0kJ/mol, respectively.

关 键 词：TG 热稳定性 寿命 高密聚乙烯 动力学 热重法 塑料薄膜 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TQ320.721