连续碳纤维增强聚醚醚酮预浸带成型工艺及性能
陈书华韩建平1
王喜占2
刘新东2
（1西安航天复合材料研究所，西安710025）
（2高性能炭纤维制造及应用国家地方联合工程研究中心，西安710089）
文摘利用浸渍法制备连续碳纤维增强聚醚醚酮(CF/PEEK)预浸带，对其成型温度、行进线速度进行研究，并测试了CF/PEEK预漫带的热胀系数、拉伸性能，利用SEM扫描电镜观察CF/PEEK预浸带内部界面结合状态。结果显示，预热区、熔融热压区温度分别控制在110~130℃和220~370℃，预浸带行进线速度控制在 2m/min时，制备的预浸带性能较好；在-150~+150℃范围内，CF/PEEK预浸带线胀系数为0.5×10*/K，并随着纤维体积分数增大而减小；CF/PEEK预浸带最大拉伸强度达到1.81CPa；SEM扫描电镜显示碳纤维与 PEEK界面结合良好。研究显示，CF/PEEK预浸带制备工艺参数可行，CF/PEEK预漫带性能较好，具有工程应用价值。
关键词CF/PEEK，预浸带，碳纤维，线胀系数
中图分类号：TB332
D0I:10.3969/j.issn.10072330.2016.04.012
PreparationandPropertiesofContinuousCarbonFiber
ReinforcedPolyetheretherketone Prepreg
HAN Jianping?
LIUXidong
CHEN Shuhua'
WANGXizan
(1 Xi'an Aerospace Composites Research Institute, Xi'an 710025)
(2 National and Local Union Engineering Research Center of High-Performance Carbon Fiber Manufacture and Application, Xi'an 710089) AbstractContinuous carbon fiber reinforced polyetheretherketone (CF/PEEK) prepreg was produced by slurry method. Processing temperatures and velocity were investigated.Thermal expansion properties and tensile properties were also experimented. SEM was used to observe the interface morphology of CF/PEEK prepreg. The results indica-ted that the temperature distribution in pre-heating and melt-saturating districts are controlled by 110 to 130°C and 220 to 370°C .The prepreg velocity is 2 m/min in order to get good CF/PEEK prepreg. The thermal expansion property of CF/PEEK prepreg is 0.5×10-°/K in the temperature from 150 to +150°C ,the maximum tensile strength is up to 1.81 GPa, and decreasing with fiber volume increasing.Scanning electron micrograph (SEM) confirms that the inter-face is good between carbon fiber and PEEK. The research tells us that the processing parameters are viable and the properties of CF/PEEK prepreg are good, and can be used in engineering.
Key wordsCF/PEEK,Prepreg，,Carbon fiber,Thermal expansion coefficient
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引言
连续碳纤维增强聚醚醚酮（CF/PEEK）复合材料具有优良的力学性能、热稳定性，耐空间环境条件好，高损伤容限等特性，主要应用于航空航天及精密机械领域1]。这种材料有效解决了传统热固性复合材料的脆性和较低的断裂韧性，CF/PEEK预浸带作为成型高端热塑性复合材料结构的基础原材料是目
收稿日期：2016-06-12
前国内研究热点。
CF/PEEK预浸带主要成型方法包括模压法、静电粉末法、浸溃法及熔融挤出法等。其中，熔融挤出法制备的预浸带含胶量均匀，尺寸稳定，柔韧性能好，应用最为广泛，以英国ICI公司商业化生产的预浸带为代表，该法需要突破PEEK熔融、浸渍模具结构设计、纤维展开及预浸带定型等关键技术，研发周期较
作者简介：陈书华，1979年出生，硕士，高级工程师，主要从事复合材料成型工艺研究。E-mail;chenshuhua0234@163.com
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宇航材料工艺http：//www.yhclgy.com2016年第4期