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

doi:10.19936/j.cnki.2096-8000.20240328.001

Abstract

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

CLC Number:

TB332

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.

References

[1] 王子健, 周晓东. 连续纤维增强热塑性复合材料成型工艺研究进展[J]. 复合材料科学与工程, 2021(10): 120-128.
[2] 王锦艳, 蹇锡高. 含二氮杂萘酮结构全芳香杂环聚合物的研究进展[J]. 高分子通报, 2011(9): 22-34.
[3] 王锦艳, 蹇锡高. 氮杂环高性能树脂研究进展[J]. 高分子材料科学与工程, 2014, 30(2): 145-150.
[4] FUJIHARA K, HUANG Z M, RAMAKRISHNA S, et al. Influence of processing conditions on bending property of continuous carbon fiber reinforced PEEK composites[J]. Composites Science and Technology, 2004, 64(16): 2525-2534.
[5] XU Z, ZHANG M, GAO S, et al. Study on mechanical properties of unidirectional continuous carbon fiber-reinforced PEEK composites fabricated by the wrapped yarn method[J]. Polymer Composites, 2019, 40(1): 56-69.
[6] DAI G, ZHAN L, GUAN C, et al. Effect of forming process on mechanical and interfacial properties for thermoplastic composite I-stiffened structures[J]. High Performance Polymers, 2021, 34(3): 282-291.
[7] MANSON E J-A, SCHNEIDER T L, SEFERIS J C. Press-forming of continuous fibre-reinforced thermoplastic composites[J]. Polymer Composites, 1990, 11: 114-120.
[8] DAI G, ZHAN L, GUAN C, et al. The effect of moulding process parameters on interlaminar properties of CF/PEEK composite laminates[J]. High Performance Polymers, 2020, 32(7): 835-841.
[9] ZHENG B, LI M, DENG T, et al. Process-structure-property relationships of thermoformed woven carbon-fiber-reinforced polyether-ether-ketone composites[J]. Polymer Composites, 2019, 40(10): 3823-3834.
[10] 毕向军, 李宗慧, 唐泽辉. 基于压力的树脂基复合材料成型工艺设计[J]. 玻璃钢/复合材料, 2010(1): 86-88.
[11] 葛恩德, 王东, 李汝鹏. 不同温度下CFRP单向板切削力和加工损伤研究[J]. 玻璃钢/复合材料, 2018(12): 62-66.
[12] 常舰, 肖海刚, 谢钟清. 不同工艺参数和界面改性对碳纤维增强聚苯硫醚复合材料Ⅰ型层间断裂韧性的影响[J]. 复合材料科学与工程, 2022(1): 22-28.
[13] 单毫, 陈宇, 李俊杰, 等. 红外加热缠绕成型工艺参数对CF/PEEK 复合材料层间剪切性能的影响[J]. 复合材料科学与工程, 2020(1): 39-46.
[14] BANG H, PARK S, JEON H. Defect identification in composite materials via thermography and deep learning techniques[J]. Composite Structures, 2020, 246: 112405.
[15] LESSARD H, LEBRUN G, BENKADDOUR A, et al. Influence of process parameters on the thermostamping of a [0/90]₁₂ carbon/polyether ether ketone laminate[J]. Composites Part A: Applied Science and Manufacturing, 2015, 70: 59-68.
[16] JAR P-Y B, KAUSCH H-H. The influence of moulding conditions on delamination behaviour of carbon-fibre/peak composites[J]. Composites Science and Technology, 1994, 52(3): 349-359.
[17] WANG X, HU Y, SONG L, et al. Thermal degradation mechanism of flame retarded epoxy resins with a DOPO-substitued organophosphorus oligomer by TG-FTIR and DP-MS[J]. Journal of Analytical and Applied Pyrolysis, 2011, 92(1): 164-170.
[18] 谭伟, 那景新, 任俊铭. 高低温老化对碳纤维增强复合材料层间力学性能的影响[J]. 吉林大学学报(工学版), 2020, 50(4): 1324-1332.
[19] 王广彬. 湿热老化对复杂应力状态下CFRP高温层间力学性能影响[D]. 长春: 吉林大学, 2022.
[20] JIANG D, LIU L, WU G, et al. Mechanical properties of carbon fiber composites modified with graphene oxide in the interphase[J]. Polymer Composites, 2017, 38(11): 2425-2432.
[21] 李楠. 碳纤维增强PPBES复合材料的界面改性研究[D]. 大连: 大连理工大学, 2018.
[22] LI J, ZHANG L Q. The research on the mechanical and tribological properties of carbon fiber and carbon nanotube-filled PEEK composite[J]. Polymer Composites, 2009, 31(8): 1315-1320.
[23] ZHENG B, DENG T, LI M, et al. Flexural behavior and fracture mechanisms of short carbon fiber reinforced polyether-ether-ketone composites at various ambient temperatures[J]. Polymers, 2018, 11(1): 18.