长玻纤增强注塑聚醚醚酮复合材料加工工艺与力学性能的研究

Processing Conditions and Mechanical Property of Long Glass Fiber Reinforced Injection-moulded PEEK Composites

以含30%的长玻璃纤维增强聚醚醚酮为原材料,采用注塑成型的方法研究了聚醚醚酮复合材料的加工工艺参数包括冷却速率、成型压力、成型温度及模具温度与力学性能的关系,并对模具温度为180℃时PEEK复合材料的微观形貌进行分析,研究结果表明:采用中速冷却速率,成型压力为120MPa,成型温度为后段375℃、中段425℃、前段425℃,模具温度保持为180℃时,复合材料的抗拉强度达81MPa、剪切强度为62.7MPa,制品表面光滑,其综合力学性能最佳。

The processing conditions of 30% long glass fiber reinforced PEEK including cooling rate, forming pressure, forming temperature, mold temperature and mechanical property were studied by using injection-moulding method. Experimental results prove that the tensile strength of PEEK composites is to 81MPa, the impact strength is to 62.7MPa, the surface is smooth and PEEK composites is excellent comprehensive properties when the cooling rate is middle slow, forming pressure is 120MPa, forming temperature is 375℃ , 425℃ ,425℃ and mold temperature is 180℃.