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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 2 32kJ/mo
TG method was used to study the thermal stability of high density polyethylene (LLDPE) films. The lifetimes of the HDPE films with weight loss of 5%, 10% and 15% were lgτ = 1.2 43 × 10 4 / T - 19.34 and lgτ = 1.6 0 9 × 10 4 / T - 2 5 .17andlgτ = 1.794 × 10 4 / T - 2 8.0 0 The activation energies obtained by Ozawa method and Kissinger method are respectively2.35kJ / mol and232kJ / mol