Preparation of recycled carbon fiber/polypropylene fiber felt and study on the properties of molded composite

doi:10.19936/j.cnki.2096-8000.20241028.015

Abstract

Abstract: Using recycled carbon fiber (RCF) and polypropylene (PP) as raw materials, RCF/PP felt is prepared through non-woven process, and then prepared into RCF/PP composite materials through hot pressing molding to investigate the non-woven process parameters and mold pressing parameters as well as the material performance. The results demonstrate that: The needling process adopts a needling density of 15 pin/cm² and a needling depth of 10 mm; the hot bonding process uses a pressure of 130~180 N/cm² and a temperature of 160~180 ℃. The composite material consolidated by acupuncture is hot pressed and formed at 190 ℃ and 6 MPa; the composite material that is thermally bonded and consolidated is formed by hot pressing at 177~180 ℃ and 7 MPa. The tensile properties of the CD direction of needle-punched felt are 77.8% higher than those of the PD direction, while thermal bonded felt are 59.3% higher than those of the PD direction. RCF/PP composite materials exhibit a certain degree of anisotropy.

Key words: recycled carbon fiber, carbon fiber felt, molding, composite

CLC Number:

TB332

LI Nan, LIU Ruohua, YANG Yang, GAO Jinglei, YANG Yuqiu. Preparation of recycled carbon fiber/polypropylene fiber felt and study on the properties of molded composite[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(10): 110-119.

References

[1] KARUPPANNAN GOPALRAJ S, KÄRKI T. A review on the recycling of waste carbon fibre/glass fibre-reinforced composites: Fibre recovery, properties and life-cycle analysis[J]. SN Applied Sciences, 2020, 2(3): 1-21.
[2] BUTENEGRO J A, BAHRAMI M, MARTÍNEZ M Á, et al. Reuse of carbon fibers and a mechanically recycled CFRP as rod-like fillers for new composites: Optimization and process development[J]. Processes, 2023, 11(2): 1-17.
[3] ALHARMOODI K, IDRISI A H, MOURAD A H I, et al. Utilization of mechanically recycled carbon fibers in vinyl ester composites[J]. Polymers, 2023, 15(4): 1-22.
[4] LEE Y M, KIM K W, KIM B J. High-efficiency carbon fiber recovery method and characterization of carbon fiber-reinforced epoxy/4,4′-diaminodiphenyl sulfone composites[J]. Polymers, 2022, 14(23): 1-12.
[5] 杨扬, 俞颖, 王晗, 等. 车用碳纤维复合材料的性能研究与低碳化应用[J]. 纺织科学与工程学报, 2023, 40(1): 74-79.
[6] 赵晓青. 碳纤维复合材料回收再利用的现状分析[J]. 化工设计通讯, 2020, 46(10): 30-31.
[7] 张东致, 万怡灶, 罗红林, 等. 碳纤维复合材料的回收与再利用现状[J]. 中国塑料, 2013, 27(2): 1-6.
[8] NALLATHAMBI G. Influence of fibre properties and its proportion on filtration behaviour of thermo-bonded multilayer nonwoven[J]. Research Journal of Textile and Apparel, 2022, 26(2): 156-169.
[9] ZHANG X, LI T T, PENG H K, et al. Synergistic effects of needle punching and shear-thickening fluid on sandwich-structured composites made of nonwoven and woven fabrics[J]. Fibers and Polymers, 2020, 21(7): 1515-1522.
[10] ZHANG X, LI T T, SUN F, et al. Stab/puncture resistance performance of needle punched nonwoven fabrics: Effects of filament reinforcement and thermal bonding[J]. Fibers and Polymers, 2022, 23(8): 2330-2339.
[11] 徐胜, 黄雪飞, 杨斌. 碳纤维表面处理对碳纤维/聚丙烯复合材料界面结合性能的影响[J]. 复合材料科学与工程, 2021(1): 65-71.
[12] 邱廷田, 郭家铭, 刘浏, 等. 碳纤维表面多尺度界面构建及其复合材料力学性能研究[J]. 化工新型材料, 2022, 50(6): 122-125, 130.
[13] 杨广林, 何敏, 刘玉飞. 相容剂对碳纤维增强聚丙烯复合材料性能的影响[J]. 上海塑料, 2022, 50(4): 13-20.
[14] MANIS F, STEGSCHUSTER G, WÖLLING J, et al. Influences on textile and mechanical properties of recycled carbon fiber nonwovens produced by carding[J]. Journal of Composites Science, 2021, 5(8): 1-16.
[15] SHAO Y, MATSUSHITA M, YANG Y, et al. Effect of the carding process and reinforcement method of carbon fiber/polypropylene fiber nonwoven fabrics on the anisotropic mechanical properties of hot-pressed composites[J]. Fibers and Polymers, 2020, 21(5): 1115-1125.