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首页> 外文期刊>Journal of Reinforced Plastics and Composites >Injection Molded Short Glass and Carbon Fibers Reinforced Polycarbonate Hybrid Composites: Effects of Fiber Loading
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Injection Molded Short Glass and Carbon Fibers Reinforced Polycarbonate Hybrid Composites: Effects of Fiber Loading

机译：注射成型短玻璃和碳纤维增强聚碳酸酯杂化复合材料：纤维载荷的影响

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摘要

Hybrid composites of polycarbonate (PC) reinforced with short glass fibers (GF) and short carbon fibers (CF) were prepared by twin-screw extrusion and injection molding techniques. Composites were produced in different ratios of GF and CF by maintaining the total fiber loading at 40 wt%. The mechanical properties such as tensile, flexural strength, and impact of these composites were investigated. It was noted that an increase in GF content led to a higher strength of the hybrid composites as compared to CF. Morphological analysis by using scanning electron microscope reveals that CF had poor fiber—matrix interactions with PC, which brought about the decrement of stress-transfer efficiency. A poor fiber—matrix interaction is believed to be the main cause of the lower strength enhancement by CF than expected. Heat deflection temperatures of composites increased with the increment of GF content. From dynamic mechanical thermal analysis, high-storage modulus is observed at the temperature below T_g. Meanwhile, it was observed that surface and volume electrical resistivity decreased by increasing the CF content owing to its conductivity.
机译：通过双螺杆挤出和注射成型技术制备了用短玻璃纤维（GF）和短碳纤维（CF）增强的聚碳酸酯（PC）杂化复合材料。通过将总纤维负载保持在40 wt％，可以制成不同比例的GF和CF复合材料。研究了这些复合材料的机械性能，例如拉伸强度，弯曲强度和冲击强度。注意到，与CF相比，GF含量的增加导致杂化复合材料的强度更高。使用扫描电子显微镜进行的形态分析表明，CF与PC的纤维-基质相互作用较差，从而降低了应力传递效率。纤维与基体之间的不良相互作用被认为是CF增强强度低于预期的主要原因。复合材料的热变形温度随GF含量的增加而增加。根据动态机械热分析，在低于T_g的温度下观察到高存储模量。同时，观察到由于其导电性，通过增加CF含量，表面和体积电阻率降低。

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