聚二苯基二苯乙炔基硅烷树脂的制备与非等温热分解

以溴乙烷、二苯基二氯硅烷、苯乙炔为原料,通过格利雅反应合成二苯基二苯乙炔基硅烷单体（DPDPES）,利用FTIR和~1H-NMR对单体分子结构进行表征。采用热聚合方法制备了聚二苯基二苯乙炔基硅烷树脂（PDPDPES）,借助TG-DTG技术研究了PDPDPES的非等温热分解过程,运用模型法对热分解过程进行分析,建立动力学函数,推导出热分解机理,并应用非模型法对热分解机理函数进行验证。实验结果表明,6种分析方法得到的热分解活化能E_a=245.37kJ/mol,指前因子lgA=13.78s~（-1）,机理函数式：f（α）=10/23·（1-α）·[-ln（1-α）]~（-1.3）;g（α）=[-l...

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Bibliographic Details
Published in材料工程 Vol. 45; no. 7; pp. 77 - 83
Main Author 谭德新 徐远 王艳丽 疏瑞文 邢宏龙
Format Journal Article
LanguageChinese
Published 安徽理工大学 化学工程学院,安徽 淮南,232001%安徽理工大学 材料科学与工程学院,安徽 淮南,232001 2017
Subjects
模型法
热分解机理
聚二苯基二苯乙炔基硅烷树脂
非模型法
model method
model-free method
模型法
polydiphenyl(diphenylethynyl)silane
非模型法
聚二苯基二苯乙炔基硅烷树脂
热分解机理
thermal decomposition mechanism
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ISSN1001-4381
1001-4381
DOI10.11868/j.issn.1001-4381.2015.000941

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Summary:以溴乙烷、二苯基二氯硅烷、苯乙炔为原料,通过格利雅反应合成二苯基二苯乙炔基硅烷单体（DPDPES）,利用FTIR和~1H-NMR对单体分子结构进行表征。采用热聚合方法制备了聚二苯基二苯乙炔基硅烷树脂（PDPDPES）,借助TG-DTG技术研究了PDPDPES的非等温热分解过程,运用模型法对热分解过程进行分析,建立动力学函数,推导出热分解机理,并应用非模型法对热分解机理函数进行验证。实验结果表明,6种分析方法得到的热分解活化能E_a=245.37kJ/mol,指前因子lgA=13.78s~（-1）,机理函数式：f（α）=10/23·（1-α）·[-ln（1-α）]~（-1.3）;g（α）=[-ln（1-α）]~（2.3）。
Bibliography:polydiphenyl（diphenylethynyl）silane;model method;model-free method;thermal decomposition mechanism
11-1800/TB
TAN De-xin, XU Yuan, WANG Yan-li, SHU Rui-wen, XING Hong-long（1. School of Chemical Engineering,Anhui University of Science and Technology, Huainan 232001, Anhui, China; 2. School of Materials Science and Engineering,Anhui University of Science and Technology, Huainan 232001, Anhui, China）
Diphenyldiphenylethynylsilane monomer （DPDPES） was synthesized with ethyl bromide, diphenyldichlorosilane and phenylacetylene by Grignard reaction.The molecular structure was characterized by FTIR and 1H-NMR spectroscopy.The polymer of polydiphenyl（diphenylethynyl）silane （PDPDPES） was also prepared by thermal polymerization.Non-isothermal thermal decomposition process of PDPDPES was studied with TG-DTG technology via model method to get thermal decomposition function and the corresponding mechanism which was further verified by model-free method.Results show that the apparent activation energy and the pre-exponential f
ISSN:1001-4381
1001-4381
DOI:10.11868/j.issn.1001-4381.2015.000941