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首页> 美国卫生研究院文献>Materials >Influence of Defects on Bending Properties of 2D-T700/E44 Composites Prepared by Improved Compression Molding Process
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Influence of Defects on Bending Properties of 2D-T700/E44 Composites Prepared by Improved Compression Molding Process

机译：缺陷对改进压铸法制备2D-T700 / E44复合材料弯曲性能的影响

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摘要

2D-T700/E44 composite materials were prepared by improved compression molding process (ICM) then microstructure and properties of the composites were analyzed and summarized by scanning electron microscope (SEM) and electronic universal testing machine. It is found that defects will occur when the process parameters are not controlled properly and the main defects of composite materials include inadequate resin impregnation, weak interlaminar binding force, fiber displacement warping, hole and brittle fracture. Moreover, there are significant differences in the infiltration microstructure, bending properties, and fracture morphology of the composite materials with different defects. When the defects of weak interlaminar binding force and brittle fracture occur, bending properties of composite materials are relatively low, and they are 220 MPa and 245 MPa, respectively, which reach 34.9% and 38.9% of the bending strength of composite material whose defects are effectively controlled. When the process parameters are reasonable and the defects of the composite materials are effectively eliminated, the bending strength can reach 630 MPa. This will lay a foundation for the preparation of 2D-T700/E44 composite materials with ideal microstructures and properties by ICM.
机译：通过改进的压缩成型工艺（ICM）制备了2D-T700 / E44复合材料，然后通过扫描电子显微镜（SEM）和电子万能试验机对复合材料的组织和性能进行了分析和总结。结果发现，如果工艺参数控制不当，将会出现缺陷，复合材料的主要缺陷包括树脂浸渍不足，层间粘结力弱，纤维位移翘曲，孔洞和脆性断裂。此外，具有不同缺陷的复合材料的渗透组织，弯曲性能和断裂形态也存在显着差异。当出现层间结合力弱和脆性断裂的缺陷时，复合材料的弯曲性能相对较低，分别为220 MPa和245 MPa，分别达到缺陷为复合材料的弯曲材料的34.9％和38.9％。有效控制。当工艺参数合理且复合材料的缺陷得到有效消除时，弯曲强度可达到630 MPa。这将为ICM制备具有理想微观结构和性能的2D-T700 / E44复合材料奠定基础。

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