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Preparation of High-Performance Carbon Fiber-Reinforced Epoxy Composites by Compression Resin Transfer Molding

机译：压缩树脂传递模塑法制备高性能碳纤维增强环氧树脂复合材料

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摘要

To satisfy the light weight requirements of vehicles owing to the aggravation of environmental pollution, carbon-fiber (CF)-reinforced epoxy composites have been chosen as a substitute for traditional metal counterparts. Since the current processing methods such as resin transfer molding (RTM) and compression molding (CM) have many limitations, an integrated and optimal molding method needs to be developed. Herein, we prepared high-performance composites by an optimized molding method, namely compression resin transfer molding (CRTM), which combines the traditional RTM and CM selectively and comprehensively. Differential scanning calorimetry (DSC) and rotational rheometry were performed to optimize the molding parameters of CRTM. In addition, metallurgical microscopy test and mechanical tests were performed to evaluate the applicability of CRTM. The experimental results showed that the composites prepared by CRTM displayed superior mechanical properties than those of the composites prepared by RTM and CM. The composite prepared by CRTM showed up to 42.9%, 41.2%, 77.3%, and 5.3% increases in tensile strength, bending strength, interlaminar shear strength, and volume fraction, respectively, of the composites prepared by RTM. Meanwhile, the porosity decreased by 45.2 %.
机译：为了满足由于环境污染加剧而导致的轻量化要求，碳纤维（CF）增强的环氧复合材料已被选作传统金属替代品。由于当前的加工方法，例如树脂传递模塑（RTM）和压缩模塑（CM），有很多局限性，因此需要开发一种集成且最佳的模塑方法。在这里，我们通过优化的成型方法，即压缩树脂传递成型（CRTM），将传统的RTM和CM选择性地和全面地结合起来，制备了高性能复合材料。进行差示扫描量热法（DSC）和旋转流变法以优化CRTM的成型参数。此外，进行了冶金显微镜测试和机械测试以评估CRTM的适用性。实验结果表明，CRTM制备的复合材料的力学性能优于RTM和CM制备的复合材料。 CRTM制备的复合材料的拉伸强度，弯曲强度，层间剪切强度和体积分数分别提高了42.9％，41.2％，77.3％和5.3％。同时，孔隙率降低了45.2％。

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