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苯乙炔基封端PMR型聚酰亚胺树脂的制备与性能研究 被引量：5

Preparation and Characterization of PMR-type Polyimide Resins Terminated with Phenylethynyl Group
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摘要 使用2,3,3,′4′-联苯四酸二酐、对苯二胺和反应性封端剂4-苯乙炔苯酐,采用单体原位反应聚合法制备了设计分子量为1500的PMR型聚酰亚胺树脂PEPA-15。PEPA-15树脂溶液具有良好的室温储存稳定性,我们使用AR-2000流变仪对树脂的熔体加工性能进行了初步测试,树脂经过371℃固化后显示了优异的热稳定性,T300碳纤维增强的复合材料经371℃后固化后在动态热机械分析测试(DMA)中在450℃前储能模量没有明显变化。 The PMR-type polyimide resin PEPA-15 with calculated molecular weight of 1500 was prepared using 2,3,3＇,4＇-bipheny- ltetracarboxcylic anhydride （a-BPDA） , 4-phenylethynyl aniline （p-PDA） , and 4-phenylethynylphthalic anhydride （4-PEPA）. The PEPA-15 monomer solution has good stability at room temperature, and the melt processability of PEPA-15 molding powders and prepregs were characterized using AR-2000 rheometer. The polyimide resin cured at 371 ℃ showed excellent thermal stability, and after posteure at high temperature for 2 hours, the 3300 carbon fiber reinforced PEPA-15 composite exhibited no change of storage modulus before 450℃ in Dynamic Mechanical Analysis （DMA） test.
作者 陈建升 左红军 高群峰 何冠君 范琳 杨士勇
机构地区 中国科学院化学研究所高技术材料实验室
出处 《航空材料学报》 EI CAS CSCD 2007年第5期66-70,共5页 Journal of Aeronautical Materials
关键词 聚酰亚胺 PMR 苯乙炔基 热性能 加工性能 polyimide PMR phenylethynyl thermal propreties processability
分类号 TB324 [一般工业技术—材料科学与工程]
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参考文献21

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二级参考文献18

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航空材料学报
2007年 第5期

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