| 新型乙炔封端聚酰亚胺的制备及性能 |
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| 引用本文： | 杜影,党国栋,胡南滔,周宏伟,陈春海. 新型乙炔封端聚酰亚胺的制备及性能[J]. 高等学校化学学报, 2009, 30(7): 1445 |
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| 作者姓名： | 杜影 党国栋 胡南滔 周宏伟 陈春海 |
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| 作者单位： | 吉林大学化学学院, 麦克德尔米德实验室, 长春 130012 |
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| 基金项目： | 国家"八六三"计划 |
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| 摘 要： | 用双酚A型二醚二酐(BPADA)和3-乙炔基苯胺(m-APA)进行缩聚反应合成了乙炔基封端的聚酰亚胺预聚体, 并对预聚体的熔体黏度、稳定性和热性能等进行研究. 结果表明, 此类预聚体具有较宽的加工窗口和较低的加工温度, 适合模压成型工艺制备树脂基复合材料. 预聚体经250 ℃固化后显示了优异的热性能, 动态力学分析显示其玻璃化转变温度为363 ℃, 在氮气和空气气氛下5%热失重温度分别为490和492 ℃.
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| 关 键 词： | 聚酰亚胺 预聚体 双酚A型二醚二酐 3-乙炔基苯胺, |
| 收稿时间： | 2008-11-28 |
Preparation and Characterization of Acetyleneterminated Polyimide |
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| DU Ying,DANG Guo-Dong,HU Nan-Tao,ZHOU Hong-Wei,CHEN Chun-Hai. Preparation and Characterization of Acetyleneterminated Polyimide[J]. Chemical Research In Chinese Universities, 2009, 30(7): 1445 |
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| Authors: | DU Ying DANG Guo-Dong HU Nan-Tao ZHOU Hong-Wei CHEN Chun-Hai |
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| Affiliation: | Alan G. MacDiarmid Institute, Jilin University, Changchun 130012, China |
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| Abstract: | A new acetylene-terminated pre-polyimide was synthesized from 2,2-bis[4-(3,4-dicarboxyphenoxy) phenyl] propane dianhydride(BPADA) and 3-ethynylaniline(APA). The crosslinking behavior of the prepolymer was studied by differential scanning calorimetry and infrared measurements. The prepolymer bearing isopropylidene moiety exhibits a much lower melt viscosity at low temperature, and thus provides a wider processing window. The polyimide film cured at 250 ℃ had a glass transition temperature(Tg) at 363 ℃(tanδ). The thermal properties of the cured films were also evaluated. TGA curves show that the temperatures of 5% weight loss(Td5) of the cured film are 490 ℃ in nitrogen and 492 ℃ in air. |
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| Keywords: | Polyimide Prepolymer 2,2-Bis[4-(3,4-dicarboxyphenoxy)phenyl] propane dianhydride 3-Ethynylaniline(m-APA), |
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