通过分子组合技术设计并合成的PMR型聚酰亚胺KH-308,室温下具有良好的储存稳定性,使用AR 2000流变仪对其成型工艺性进行了研究,树脂固化后的储能模量拐点高于360℃,冲击强度大于20J/cm2.碳纤维增强的树脂基复合材料在250、288和320℃具有良好的热氧化稳定性,在320℃,经过500h后热氧化失重≤3%;复合材料在120℃、0.2 MPa的水中具有很好的湿热稳定性,湿热老化后复合材料的热性能和力学性能变化很小.短切碳纤维增强的复合材料具有良好的力学性能、干摩擦和水环境下良好的摩擦学性能,石英纤维增强的复合材料具有宽频范围内稳定的介电常数和介电损耗.
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