Carbon fiber reinforced polymer (CFRP) composite has received extensive attention in aerospace, weapon equipment, communications electronics, transportation and other fields. The improved compression molding process is one of the most advantageous processes for preparing CFRP composite. It is important to understand the effects of molding process parameters, especially temperature parameters, on the preparation of an ideal composite. This paper addresses the effect of no pressure curing temperature on the 2D-CFRP bending property of the improved compression molding process. The 2D-T700/E44 composites were prepared under no pressure curing temperatures of 80° C, 90° C, 100° C, 110° C, 120° C and 130° C. The effect law and influence mechanism of temperature parameter on the microstructure and bending property of composites were summarized. The results show that the excessively high or low no pressure curing temperatures are unfavorable for the preparation of 2D-T700/E44 composite. When the temperature is 110°C, the impregnation effect of the resin is ideal, and the defects are effectively controlled. The fracture morphology is reasonable, and the performance is greatly improved so the bending strength reaches 860 MPa.

中文翻译：

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无压力固化温度对2D-T700 / E44复合材料弯曲性能的影响

碳纤维增强聚合物（CFRP）复合材料已在航空航天，武器装备，通信电子，交通运输和其他领域受到广泛关注。改进的压缩成型工艺是制备CFRP复合材料的最有利工艺之一。重要的是要了解成型工艺参数（尤其是温度参数）对理想复合材料制备的影响。本文探讨了无压力固化温度对改进的压缩成型工艺的2D-CFRP弯曲性能的影响。在80°C，90°C，100°C，110°C，120°C和130°C的无压力固化温度下制备2D-T700 / E44复合材料。温度参数对材料的影响规律和影响机理总结了复合材料的显微组织和弯曲性能。结果表明，过高或过低的无压固化温度均不利于2D-T700 / E44复合材料的制备。当温度为110℃时，树脂的浸渍效果是理想的，并且可以有效地控制缺陷。断裂形态合理，性能大大提高，弯曲强度达到860 MPa。