注塑工艺对碳纤维增强聚酰胺10T复合材料力学性能的影响

›› 2023, Vol. 37 ›› Issue (5): 83-89.

注塑工艺对碳纤维增强聚酰胺10T复合材料力学性能的影响

张琦¹,夏礼栋²,李源²,邵静波²,高达利²,张师军²

1. 中国石化北京化工研究院
2. 中石化（北京）化工研究院有限公司

收稿日期:2023-01-10 修回日期:2023-02-22 出版日期:2023-05-26 发布日期:2023-05-26
基金资助:
中国石化科技部项目

Effect of injection process on mechanical performance of carbon-fiber-reinforced polyamide 10T composites

Received:2023-01-10 Revised:2023-02-22 Online:2023-05-26 Published:2023-05-26

摘要/Abstract

摘要： 以高温聚酰胺10T（PA10T）为基体，制备碳纤维增强聚酰胺10T复合材料（PA10T/CF），研究复合材料注射成型的工艺参数对复合材料力学性能的影响。通过对复合材料的纤维保留长度进行分析，得到最佳平均保留长度为295 μm，同时得到优化的注塑工艺参数为注塑温度330 ℃，注塑压力50 %（注射压力最大值的50 %），注射速率70 %（注射速率最大值的70 %），保压压力50 MPa，模具温度30 ℃。分析扫描电子显微镜（SEM）表征结果可知，不同纤维含量的PA10T/CF复合材料采用优化工艺参数成型时，其样品断面呈韧性断裂且CF均匀良好地分散。

关键词: 聚酰胺10T, 碳纤维, 注塑工艺, 纤维长度

Abstract: Carbon-fiber （CF）-reinforced polyamide 10T （PA10T） composites were prepared by using PA10T as a matrix， and the effect of parameters for injection molding process on the mechanical properties of the composites were investigated. Based on the analysis of the average fiber-retention length of each samples， the optimal fiber-retention length for the PA10T/CF composites was about 295 μm. The optimized injection parameters were determined to be an injection temperature 330 oC， an injection pressure of 50 % corresponding to the maximum injection pressure， an injection rate of 70 % corresponding to the maximum injection rate， a maintaining pressure of 50 MPa， and a module temperature of 30 oC. Scanning electron microscopy showed that the cross-section of the composites with different contents of CF presented ductile fracture， and the carbon fibers were uniformly dispersed in the matrix when the optimized process parameters were adopted.

Key words: polyamide 10T, carbon fiber, injection molding process, fiber length

张琦夏礼栋李源邵静波高达利张师军. 注塑工艺对碳纤维增强聚酰胺10T复合材料力学性能的影响[J]. , 2023, 37(5): 83-89.

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