碳纤维增强聚芳醚酮复合材料冲击损伤修复及性能
Impact damage repair and performance of carbon fiber reinforced poly aryl ether ketone composites
顾洋洋 1刘刚 1高洞庭 1张代军 2王成博 2姚佳楠 1杨曙光1
作者信息
- 1. 东华大学 材料科学与工程学院,纤维材料改性国家重点实验室,上海 201620
- 2. 中国航发北京航空材料研究院,北京 100095;先进复合材料国防科技重点实验室,北京 100095
- 折叠
摘要
针对国产T300级碳纤维增强高性能聚芳醚酮树脂预浸料(SCF35/PAEK-L)制备的热塑性复合材料,采用热压工艺修复不同冲击能量作用下产生的冲击损伤,以压缩强度评价复合材料冲击损伤修复的效果,并利用Micro-CT研究复合材料修复前、后的微观形貌.结果显示:复合材料的冲击损伤修复效果受到热压修复工艺的影响,随着修复温度的提高复合材料的压缩强度呈现先增加后降低的趋势,较低的修复温度及较高的修复压力与较高的修复温度及较低的修复压力能够得到相近的压缩强度;同时,复合材料的修复效果与冲击损伤程度具有相关性,随着冲击损伤程度的提高,复合材料修复后的压缩强度逐渐降低,标准能量冲击的复合材料修复后,其修复后压缩强度恢复到无损伤状态压缩强度的～70%,为～417 MPa,复合材料出现穿透损伤后,其修复后压缩强度恢复到56%,为～334 MPa.
Abstract
For the thermoplastic composites prepared by domestic T300 grade carbon fiber reinforced high per-formance poly aryl ether ketone resin prepreg(SCF35/PAEK-L),the impact damages generated by different impact energies were repaired by hot pressing process.The compressive strength was used to evaluate the repair effect of composite impact damage,and Micro-CT was utilized to study the microscopic morphology of composites before and after repair.The results show that the impact damage repair effect of the composite is affected by the hot press-ing repair process,and the compression strength of the composite shows a trend of increasing and then decreasing as the repair temperature increases.The lower repair temperature and higher repair pressure are able to obtain similar compression strength with higher repair temperature and lower repair pressure.The repair effect of the composite material is influenced by the degree of impact damage,and the compressive strength of the composite material after repair gradually decreases as the degree of impact damage increases.The repaired compressive strength of the composites with standard energy impact recoveres to～70%of the compression strength in the undamaged state,which is～417 MPa,and when the composite material has penetration damage,its compressive strength after repair recovers to 56%,which is～334 MPa.
关键词
聚芳醚酮/热塑性复合材料/低速冲击/热压修复/压缩性能Key words
poly aryl ether ketone/thermoplastic composites/low velocity impact/hot pressing repair/compres-sion properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据