成型温度对CF/PPEK复合材料的缺陷和力学性能影响

doi:10.19936/j.cnki.2096-8000.20240328.001

复合材料科学与工程 ›› 2024, Vol. 0 ›› Issue (3): 5-12.DOI: 10.19936/j.cnki.2096-8000.20240328.001

• 基础研究 • 下一篇

成型温度对CF/PPEK复合材料的缺陷和力学性能影响

王孟¹, 刘程^1,2*, 张玉¹, 贾航¹, 乔越¹, 蹇锡高^1,2

1.大连理工大学化工学院高分子材料系,大连 116024;
2.辽宁省高性能树脂材料专业技术创新中心,大连 116012

收稿日期:2023-03-06 出版日期:2024-03-28 发布日期:2024-04-22
通讯作者: 刘程(1976—),男,博士,研究员,主要从事高性能树脂及其复合材料方面的研究,liuch1115@dlut.edu.cn。
作者简介:王孟(1998—),女,硕士研究生,主要从事热塑性树脂基复合材料方面的研究。
基金资助:
国家自然科学重点基金项目(91860204);中央高校基本科研业务费(DUT22LAB605);辽宁省应用基础研究计划项目(22JH2/101300232);大连市创新基金项目(2022JJ12GX042)

Effect of molding temperature on defects and mechanical properties of CF/PPEK composites

WANG Meng¹, LIU Cheng^1,2*, ZHANG Yu¹, JIA Hang¹, QIAO Yue¹, JIAN Xigao^1,2

1. Department of Polymer Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
2. Technology Innovation Center of High Performance Resin Materials, Liaoning Province, Dalian 116012, China

Received:2023-03-06 Online:2024-03-28 Published:2024-04-22

摘要/Abstract

摘要： 分别采用溶液浸渍法及真空热压成型法制备了连续碳纤维增强含杂萘联苯结构聚芳醚酮(CF/PPEK)预浸料和复合材料,对不同成型温度制备的复合材料进行了超声相控阵和三维X射线显微镜(XRM)无损检测,利用旋转流变仪、电子万能试验机、动态力学分析仪(DMA)、红外光谱仪(FT-IR)、扫描电镜(SEM)、金相显微镜对CF/PPEK复合材料进行了表征,系统研究了成型温度对纤维的浸润质量以及复合材料孔隙率、弯曲行为和层间剪切性能的影响,通过力学性能分析和断口形貌表征研究了断裂机理及缺陷对其性能产生的影响。试验结果表明:成型温度为350 ℃时,CF/PPEK复合材料的弯曲模量和层间剪切强度分别为125 GPa和64 MPa;成型温度为360 ℃时,CF/PPEK复合材料的缺陷最少,弯曲强度可达1 376 MPa;而370 ℃高温下,复合材料出现明显缺陷,各方面性能急剧下降。

关键词: 碳纤维增强热塑性树脂基复合材料, 杂萘联苯结构聚芳醚酮, 成型工艺, 缺陷, 无损检测

Abstract: In this paper, continuous carbon fiber reinforced poly(phthalazinone ether ketone)(CF/PPEK) prepreg and composites were prepared by solution impregnation method and vacuum hot-molding method, respectively. The ultrasonic phased array and three-dimensional X-ray microscope (XRM) nondestructive testing was carried out for composites prepared at different molding temperatures. The CF/PPEK composites were characterized by rotary rheometer, electronic universal testing machine, dynamic mechanics analyzer (DMA), Fourier transform infrared spectrometer (FT-IR), scanning electron microscope (SEM) and metallographic microscope. The influence of molding temperature on the wetting quality of the fiber, the porosity, the bending behavior and interlaminar shear properties of the composite were systematically investigated. Furthermore, the fracture mechanism and the influence of defects on its properties were studied by mechanical property analysis and fracture morphology characterization. The experimental results showed that the bending modulus and interlaminar shear strength of CF/PPEK composites reach up to 125 GPa and 64 MPa, respectively when the molding temperature is 350 ℃. And when the molding temperature is 360 ℃, the CF/PPEK composite has the least defects and the bending strength can reach up to 1 376 MPa. However, at 370 ℃, the composite has obvious defects, and its performance in all aspects has declined sharply.

Key words: carbon fiber reinforced thermoplastic matrix composite, poly(phthalazinone ether ketone), forming process, defect, nondestructive testing

中图分类号:

TB332

王孟, 刘程, 张玉, 贾航, 乔越, 蹇锡高. 成型温度对CF/PPEK复合材料的缺陷和力学性能影响[J]. 复合材料科学与工程, 2024, 0(3): 5-12.

WANG Meng, LIU Cheng, ZHANG Yu, JIA Hang, QIAO Yue, JIAN Xigao. Effect of molding temperature on defects and mechanical properties of CF/PPEK composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(3): 5-12.

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成型温度对CF/PPEK复合材料的缺陷和力学性能影响

Effect of molding temperature on defects and mechanical properties of CF/PPEK composites

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