【摘要】 实验采用矿泉水瓶专用PET粒料,通过热分析技术,在不同的升温速率下得到PET的热分解曲线。通过Kissinger法和Freeman-Carroll法对热分解曲线进行处理,得到PET的表观活化能E为302.36k J·mol-1,指前因子A为4.2×1023min-1,反应级数n为0.5。并通过阿仑尼乌斯方程得到PET的热分解寿命方程:lnt=21695/T-31.71。更多还原

【Abstract】 This experiment uses PET special granular of mineral water bottle,by thermal analysis technique in different heating rates obtained PET thermal decomposition curves. By Kissinger method and Freeman Carroll method on the thermal decomposition curve processing,get the pet apparent activation energy E is about 302. 36 k J·mol-1,referring of the factor A is 4. 2 × 1023min-1and the reaction order n is 0. 5. And through the Arrhenius equation to get the PET thermal degradation life equation: lnt = 21695/T-31. 71.更多还原