| 引用本文: | 赵伟栋,蒋文革,孙红卫,杨士勇.新型耐370℃聚酰亚胺复合材料固化工艺与性能研究[J].材料科学与工艺,2011,19(5):125-130.DOI:10.11951/j.issn.1005-0299.20110526. |
| ZHAO Wei-dong,JIANG Wen-ge,SUN Hong-wei,YANG Shi-yong.Process and properties characterization of novel polyimide matrix composites for 370 ℃ application[J].Materials Science and Technology,2011,19(5):125-130.DOI:10.11951/j.issn.1005-0299.20110526. |
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| 摘要: |
| 对新型耐370℃聚酰亚胺树脂的化学反应特性、流变性能进行了测试分析,着重研究了加压时机和后固化工艺参数对复合材料性能的影响,并在试验基础上制定了复合材料的固化工艺和后固化工艺.试验结果表明,复合材料的成型时选择280～300℃施加压力,有利于低孔隙率高质量,选择400℃和6h的后固化工艺参数较合理.树脂的最低黏度为100Pa.s,复合材料的Tg达到417℃,Td5%为545℃(空气中),370℃时弯曲强度为1010MPa,弯曲模量为116GPa,短梁剪切强度为43MPa. |
| 关键词: 聚酰亚胺 耐高温 复合材料 固化工艺 |
| DOI：10.11951/j.issn.1005-0299.20110526 |
| 分类号:TB332 |
| 基金项目: |
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| Process and properties characterization of novel polyimide matrix composites for 370 ℃ application |
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ZHAO Wei-dong1, JIANG Wen-ge1, SUN Hong-wei1, YANG Shi-yong2
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1.Aerospace Research of Materials and Processing Technology,Beijing,100076,China;2..Laboratory of Advanced Polymer Materials,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100080,China
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| Abstract: |
| The chemical reaction characterization,rheological property of novel polyimide were analyzed.The influence of time putting pressure on prepregs on properties of composites were researched.The cure and post-cure procedure were established based on experimentations.The result showed that the time putting pressure on prepregs is 280℃~300℃,postcure temperature and time are 400℃ and 6hrs,respectively,the minimum viscosity of the neat resin is 100Pa.s,the glass transition temperature,Td5%in air,the flexural strength,the moduli and the interlaminate of the polyimide matrix composite are 417℃,454℃,1010MPa,116GPa and 43.8MPa,respectively. |
| Key words: polyimide high temperature-resistant composite processability |
