| 引用本文: | 谭德新,王艳丽,唐玲,陈必华,邢宏龙.聚乙烯基三苯乙炔基硅烷的热分解动力学[J].材料科学与工艺,2015,23(4):81-86.DOI:10.11951/j.issn.1005-0299.20150414. |
| TAN Dexin,WANG Yanli,TANG Ling,CHEN Bihua,XING Honglong.The thermal decomposition kinetics of poly(vinyltri (phenylethynyl)silanes)[J].Materials Science and Technology,2015,23(4):81-86.DOI:10.11951/j.issn.1005-0299.20150414. |
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| 聚乙烯基三苯乙炔基硅烷的热分解动力学 |
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谭德新1,王艳丽2,唐玲1,陈必华1,邢宏龙1
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(1.安徽理工大学 化学工程学院,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)
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| 摘要: |
| 为研究聚乙烯基三苯乙炔基硅烷树脂的热分解机理,利用TG-DTG技术探讨了聚乙烯基三苯乙炔基硅烷树脂的非等温热分解过程.借助非模型拟合法和模型拟合法分析了聚乙烯基三苯乙炔基硅烷树脂(PVTPES)的热分解行为,建立了动力学函数,得到了聚乙烯基三苯乙炔基硅烷树脂的热分解反应机理.结果表明,6种热分析方法计算得到PVTPES的热分解活化能(E)在240 kJ/mol左右,指前因子lg A=15.51,机理符合三维(3D)扩散控制机理.聚合物PVTPES的热分解过程分析进一步证实芳炔单体的热聚合为环三聚反应. |
| 关键词: 聚乙烯基三苯乙炔基硅烷 非模型拟合法 模型拟合法 热分解反应机理 环三聚反应 |
| DOI：10.11951/j.issn.1005-0299.20150414 |
| 分类号:TQ323 |
| 基金项目:国家自然科学基金(2,5)； 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). |
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| The thermal decomposition kinetics of poly(vinyltri (phenylethynyl)silanes) |
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TAN Dexin1, WANG Yanli2, TANG Ling1, CHEN Bihua1, XING Honglong1
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(1.School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China; 2.School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China)
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| Abstract: |
| To investigate the decomposition mechanism of poly(vinyltri(phenylethynyl)silane)s (PVTPES), the non-isothermal thermal decomposition process of PVTPES was studied by means of xxxx (full for TG-DTG) TG-DTG technique. Combining the model fitting method and non-model fitting method, the kinetics function for thermal decomposition process was obtained. The results show that the activation energy (E) and the pre-exponential factor (lg A) are 240 kJ/mol and 15.51, respectively. The thermal decomposition reaction mechanism is consistant with the 3D diffusion control model. The decomposition process further verified the cyclotrimetration reaction of arylacetylenic monomer under thermal polymerization. |
| Key words: poly(vinyltri(phenylethynyl)silane)s non-model method model method thermal decomposition reaction mechanism cyclotrimetration reaction |
