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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis and Properties of PMR Type Poly(benzimidazopyrrolone-imide)s
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Synthesis and Properties of PMR Type Poly(benzimidazopyrrolone-imide)s

机译：PMR型聚苯并咪唑并吡咯烷酮-酰亚胺的合成及性能

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摘要

PMR type poly(bentzimidazopyrrolone-imide) or poly(pyrrolone-imide) (PPI) matrix resin was synthesized using the diethyl ester of 4,4'-(hexafluoroisopropylidene)-diphthalic acid (6FDE), 3,3'-diaminobenzidine, para-henylenediamine, and mono-ethyl ester of cis-5-norbornene-endo-2,3-dicarboxylic acid (NE) in anhydrous ethyl alcohol with N-methylpyrrolidone. The homogeneous matrix resin solution (40-50% solid) was stable for a storage period of 2 weeks and showed good adhesion with carbon fibers, which ensured production of prepregs. The chemical and thermal processes in the polycondensation of the monomeric reactant mixtures were monitored by Fourier transform infrared spectroscopy, thermogravimetric analysis, differential scanning calorimetry, scanning electron microscopy, etc. Thermosetting PPI as well as short carbon fiber-reinforced polymer composites was accomplished at optimal thermal curing conditions. The polymer materials, after postcuring, showed excellent thermal stability, with an initial decomposition temperature > 540 deg C. Results of MDA experimenta indicate that the materials showed > 70-80% retention of the storage modulus at 400 deg C and glass transition temperatures as high as 440-451 deg C.
机译：使用4,4'-（六氟异亚丙基）-二邻苯二甲酸（6FDE），3,3'-二氨基联苯胺的对酯合成PMR型聚（苯并咪唑并吡咯烷酰亚胺）或聚（吡咯烷酰亚胺）（PPI）基体树脂-苯二胺和顺式-5-降冰片烯-内-2,3-二羧酸（NE）在无水乙醇中与N-甲基吡咯烷酮的单乙酯均匀的基质树脂溶液（固体含量为40-50％）在2周的储存时间内稳定，并显示出与碳纤维的良好粘合性，从而确保了预浸料的生产。通过傅立叶变换红外光谱，热重分析，差示扫描量热法，扫描电子显微镜等方法监测单体反应物混合物缩聚过程中的化学和热过程。在最佳条件下完成了热固性PPI和短碳纤维增强的聚合物复合材料热固化条件。后固化后，聚合物材料表现出优异的热稳定性，初始分解温度> 540℃。MDA实验结果表明，该材料在400℃和玻璃化转变温度下显示出> 70-80％的储能模量保持率。高达440-451摄氏度。

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