丙基芳炔单体的合成及其非等温固化动力学  

Preparation and non-isothermal curing kinetics of propylarylacetylenic monomer

作　　者：吴小乐[1] 谭德新[1] 徐远[1] 王艳丽[2] 

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

出　　处：《热固性树脂》2016年第3期17-21,共5页Thermosetting Resin

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

摘　　要：以丙基三氯硅烷、苯乙炔为原料,通过格利雅反应合成丙基三苯乙炔基硅烷单体(PTPES)。采用傅里叶红外光谱、核磁共振氢谱表征了其分子结构,非等温DSC法研究了单体的固化特性,并运用4种常见的动力学分析方法(Kissinger、Ozawa、Flynn-Wall-Ozawa、Friedman)获得了PTPES固化过程的动力学参数和模型。结果表明,PTPES单体的熔点为75℃,PTPES在固化过程中,符合自催化动力学模型,表面活化能为122.21 k J/mol,指前因子ln A为22.48 s^(-1),反应级数n、m分别为0.77、0.22。The propyl-tri（phenylethynyl）silane（（Ph—C≡C）_3—Si—CH_2CH_2CH_3）（PTPES）monomer was synthesized with propyl trichlorosilane and phenylacetylene by Grignard reaction. The molecular structure was characterized by FT-IR and 1H-NMR. The curing characteristics of the monomer was investigated by the non-isothermal DSC. The kinetic parameters and the kinetic models of the curing process were obtained by Kissinger,Ozawa,Flynn-Wall-Ozawa and Friedman methods. The results showed that the melting point of PTPES was 75 ℃. The PTPES was in line with the autocatalytic kinetic model during the curing process. The average activation energy was 122.21 k J/mol and the pre-exponential factor ln A and the reaction order n,m were 22.48 s-1,0.77 and 0.22,respectively.

关 键 词：丙基三苯乙炔基硅烷 格利雅反应 非等温DSC法 固化动力学 自催化动力学模型 

分 类 号：TQ264.1[化学工程—有机化工]