聚苯基三苯乙炔基硅烷树脂的非等温热分解过程研究  

The non-isothermal thermal decomposition process of poly(phenyltri(phenylethynyl)silane)s

作　　者：王艳丽[1] 谭德新[2] 于峰 吴小乐[2] 邢宏龙[2] 

机构地区：[1]安徽理工大学材料科学与工程学院,安徽淮南232001 [2]安徽理工大学化工学院,安徽淮南232001 [3]淮南市邮政局,安徽淮南232001

出　　处：《功能材料》2014年第21期21040-21044,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51173002;51303005);安徽省高校自然科学基金重点资助项目(KJ2013A087;KJ2013A095);安徽理工大学博士基金资助项目(201211005)

摘　　要：借助TG-DTG技术研究了聚苯基三苯乙炔基硅烷树脂(PPTPES)在氮气气氛中不同升温速率下的热分解行为,利用模型拟合法和非模型拟合法求出了聚苯基三苯乙炔基硅烷树脂热分解反应动力学三因子及分解机理函数。计算结果表明,7种分析方法得到的PPTPES的平均热分解活化能为E=252.76kJ/mol,指前因子lgA=13.93,反应级数n=3,机理函数微分式为1f(α)=(1-a)[-ln(1-a)]-23积分式为g(α)=[-ln(1-α)]3反应遵循随机成核和随后生长机理。The non-isothermal thermal decomposition process of poly (phenyltri (phenylethynyl )silane )s (PPTPES)in a nitrogen atmosphere was studied with TG-DTG technology,applying the model method com-bined with model-free method to get kinetic triplet and the mechanism of thermal decomposition reaction of PPTPES.The results obtained from 7 different methods show that the activation energy and the pre-exponential factor were E =252.76 kJ/mol,lgA =13.93 and n =3.The reaction differential function was f (α)= 1 3 (1 -a )[- ln(1 -a )]-2 and the integral mechanism function was g (α)=[- ln(1 -α)]3 and the reaction followed the random nucleation and growth mechanism.

关 键 词：聚苯基三苯乙炔基硅烷 模型拟合法 非模型拟合法 动力学三因子 反应机理 

分 类 号：TB323[一般工业技术—材料科学与工程]