摘要
在不同升温速率下,利用热重分析法研究了聚酰胺12(PA12)在氮气氛围中的热分解动力学。运用Freeman Carroll、Kissinger、Ozawa、Achar和Coats Redfern方法计算和确定了PA12在氮气氛围中的热分解活化能和热分解机理及其模型。结果表明,在氮气氛围中,PA12的热分解活化能为246.5 kJ/mol,指前因子为10^(14.71);PA12热分解机理为收缩球体法则,机理方程的微分形式为f(α)=3(1-α)^(2/3),积分形式为G(α)=1-(1-α)^(1/3)。
The thermal decomposition kinetics and mechanism of polyamide 12 （PAl2） was investigated by means of TGA at different heating rate in nitrogen atmosphere. The thermal decomposition activation energy, thermal decomposition kinetics and model were obtained from Freeman Carroll method, Kissinger method, Ozawa method, Achar and Coats Redfern method. The thermal decomposition activation energy and the pre-exponential constant of PAl2 were 246.5 kJ/mol and 101471 , respectively; the thermal decomposition mechanism of PAl2 followed contraction cylinder theorem of which the differential form was f（a）= 3 （1=a）^2/3 and the integral form was G（α） = 1- （1-a）^1/3
出处
《中国塑料》
CAS
CSCD
北大核心
2016年第5期13-18,共6页
China Plastics
关键词
聚酰胺12
热分解动力学
热分解机理
polyamide 12
thermal decomposition kinetics
thermal decomposition mechanism
