科学研究

氯丙基三苯乙炔基硅烷的制备及其固化分析

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  • 岭南师范学院化学化工学院,湛江524048
谭德新(1977-),男,博士,副教授,从事功能高分子材料研究工作。

收稿日期: 2018-12-12

  网络出版日期: 2022-11-01

基金资助

广东省自然科学基金(2017A030307028);岭南师范学院校级基金(ZL1822,ZL1604);广东省科技创新战略专项基金(2018A01005)

Preparation and curing kinetics analysis of CPTPES

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  • School of Chemistry and Chemical Engineering,Lingnan Normal University,Zhanjiang 524048

Received date: 2018-12-12

  Online published: 2022-11-01

摘要

以苯乙炔、镁条、氯丙基三氯硅烷和溴乙烷为原料,通过Grignard反应成功制备氯丙基三苯乙炔基硅烷(CPTPES)单体。利用傅里叶变换红外光谱仪和核磁共振波谱仪(1H-NMR、13C-NMR)对单体进行结构表征;通过差示扫描量热仪(DSC)确定单体的固化工艺,采用Kissinger法、Ozawa法、Flynn-Wall-Ozawa法和Friedman法探究单体的固化特性,并预测固化反应机理。实验结果表明:CPTPES的熔点为75℃,反应活化能Ea为146.75kJ/mol,指前因子lnA为26.33,反应级数m为0.47,n为1.61,固化机理与自催化反应机理相符。

本文引用格式

谭德新, 梁家仪, 宁明月, 余素颖, 张佩琪, 王艳丽 . 氯丙基三苯乙炔基硅烷的制备及其固化分析[J]. 化工新型材料, 2020 , 48(7) : 191 -195 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.07.044

Abstract

Chloropropyl(triphenylethynyl)silane (CPTPES) monomer was synthesized via Grignard reaction of phenylacetylene,magnesium,chloropropyltrichlorosilane and ethylbromide.Its chemical structure was characterized by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance spectroscopy (1H-NMR,13C-NMR).Its curing process was obtained by differential scanning calorimetry (DSC) and the curing kinetic parameters were discussed by four well-known kinetic methods,i.e.,Kissinger,Ozawa,Flynn-Wall-Ozawa and Friedman methods.Results shown that the melting was 75℃,the reaction activation energy Ea was 146.75kJ/mol,the pre-exponential factor lnA was 26.33 and the reaction order m and n were 0.47 and 1.61 respectively.The curing mechanism was in accordance with autocatalytic reaction.

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