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首页> 外文期刊>Polymer science, Series C >Heat-Resistant Carbon Fiber Reinforced Plastics Based on a Copolymer of Bisphthalonitriles and Bisbenzonitrile
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Heat-Resistant Carbon Fiber Reinforced Plastics Based on a Copolymer of Bisphthalonitriles and Bisbenzonitrile

机译：基于海骨腈和双细胞腈的共聚物的耐热碳纤维增强塑料

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摘要

New phthalonitrile resins that provide processing properties at the level of epoxy resins and composites obtained from them are discussed. The processing parameters of the resins are improved due to the discovery of reactive diluents based on bisbenzonitriles. By introducing these comonomers into the resin composition the melt viscosity is reduced to less than 100 MPa s at a temperature of 120 degrees C, which allows one to obtain carbon fibers by modern injection techniques. The curing programs of the composite are selected in order to attain the maximum compressive strength (852 MPa). Carbon fiber reinforced plastics postcured at 375 degrees C retain up to 90% of their mechanical properties at 400 degrees C (tau(12) = 60-80 MPa). It is first shown that prepregs can be produced from phthalonitrile resins using the melt technology and composites from them can be obtained by hot pressing. Carbon fibers possess high limiting oxygen index values (LOI > 80%). Thus, phthalonitrile resins and prepregs are developed for non-autoclave processing of carbon and glass composites suitable for operation at elevated temperatures.
机译：讨论了新的邻苯二甲腈树脂，其加工性能与环氧树脂及由其制备的复合材料相当。由于发现了基于双苯甲腈的活性稀释剂，树脂的加工参数得到了改善。通过将这些共聚单体引入树脂组合物中，在120℃的温度下，熔体粘度降低到100 MPa s以下，这使得人们能够通过现代注射技术获得碳纤维。选择复合材料的固化程序是为了达到最大抗压强度（852 MPa）。碳纤维增强塑料在375摄氏度下后固化，在400摄氏度（τ（12）=60-80兆帕）下保持高达90%的机械性能。首次表明，邻苯二甲腈树脂可采用熔融技术生产预浸料，并可通过热压获得复合材料。碳纤维具有较高的极限氧指数（LOI>80%）。因此，邻苯二甲腈树脂和预浸料被开发用于适合高温操作的碳和玻璃复合材料的非高压釜处理。

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