连续碳纤维增强聚乳酸复合材料3D打印及回收再利用机理与性能
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摘要
纤维增强树脂基复合材料具有轻质高强的优异特性,但传统成型工艺具有成本高、过程复杂、难以回收的缺点限制了复合材料的广泛应用,介绍了一种新的连续纤维增强热塑性复合材料3D工艺(CFRTPCs)及其回收再利用策略,建立成型过程与界面性能、力学性能的内在联系,打印连续碳纤维增强聚乳酸(CF/PLA)样件抗弯强度与模量分别达到390MPa与30.8GPa,实现了复合材料低成本一体化快速制造,其回收再利用过程无污染,材料利用率为75%,二次打印样件抗弯强度提高25%左右,实现了复合材料高效高性能绿色回收再利用,二者结合形成一种全生命周期复合材料应用模式。
Fiber reinforced polymer composites have excellent properties of light weight and high performance. However, most of conventional manufacturing processes have the disadvantages of high cost, complex process and difficult recycling,having limited wide applications of composites. A novel 3D printed continuous fiber reinforced thermoplastic composites(CFRTPCs) is presented as well as its recycling and remanufacturing strategy. The interconnections between the forming process and interface performance and mechanical properties of parts are studied. The flexural strength and modulus of carbon fiber reinforced PLA composite(CF/PLA) are about 390 MPa and 30.8 GPa respectively, and the process is low lost, simple and rapid. The recycling and remanufactuing strategy is proposed without any pollution generation, with a high material recovery rate of 75%, and with reprinted specimens 25% improvement of flexural strength than original, which is efficient, non-downgrade and green. An end of life composite application method will be set up by combining CFRTPCs process with its recycling and remanufacuring process.
Fiber reinforced polymer composites have excellent properties of light weight and high performance. However, most of conventional manufacturing processes have the disadvantages of high cost, complex process and difficult recycling,having limited wide applications of composites. A novel 3D printed continuous fiber reinforced thermoplastic composites(CFRTPCs) is presented as well as its recycling and remanufacturing strategy. The interconnections between the forming process and interface performance and mechanical properties of parts are studied. The flexural strength and modulus of carbon fiber reinforced PLA composite(CF/PLA) are about 390 MPa and 30.8 GPa respectively, and the process is low lost, simple and rapid. The recycling and remanufactuing strategy is proposed without any pollution generation, with a high material recovery rate of 75%, and with reprinted specimens 25% improvement of flexural strength than original, which is efficient, non-downgrade and green. An end of life composite application method will be set up by combining CFRTPCs process with its recycling and remanufacuring process.
引文
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[2]VAIDYA U K,CHAWLA K K.Processing of fiber reinforced thermoplastic processing[J].International Materials Reviews,2008,53(4):185-218.
[3]GERALDINE O,LUKE O D,GARY A L.Current status of recycling of fiber reinforced polymers:Review of technologies,reuse and resulting properties[J].Progress in Materials Science,2015,72:61-99.
[4]王强华,孙阿良.3D打印技术在复合材料制造中的应用与发展[J].玻璃钢,2015(4):9-14.WANG Qianghua,SUN Aliang.Application and progress of composites by 3D printing[J].Fiber Reinforced Plastics,2015(4):9-14.
[5]YAN C,HAO L,XU L,et al.Preparation,characterisation and processing of carbon fibre/polyamide-12 composites for selective laser sintering[J].Composites Science and Technology,2011,71(16):1834-1841.
[6]NING F,CONG W,QIU J,et al.Additive manufacturing of carbon fiber reinforced thermoplastic composites using fused deposition modeling[J].Composites Part B:Engineering,2015,80:369-378.
[7]COMPTON B G,LEWIS J A.3D‐printing of lightweight cellular composites[J].Advanced materials,2014,26(34):5930-5935.
[8]VAN DER KLIFT F,KOGA Y,et al.3D printing of continuous carbon fibre reinforced thermo-plastic(CFRTP)tensile test specimens[J].Open Journal of Composite Materials,2015,6(1):18.
[9]MATSUZAKI R,UEDA M,NAMIKI M,et al.Three-dimensional printing of continuous-fiber composites by in-nozzle impregnation[J].Scientific Reports,2016,6:23058.
[10]YANG C,TIAN X,LIU T,et al.3D printing for continuous fiber reinforced thermoplastic composites:mechanism and performance[J].Rapid Prototyping Journal,2017,23(1):209-215.
[11]TIAN X,LIU T,YANG C,et al.Interface and performance of 3D printed continuous carbon fiber reinforced PLA composites[J].Composites Part A:Applied Science and Manufacturing,2016,88:198-205.
[12]LI N,LI Y,LIU S.Rapid prototyping of continuous carbon fiber reinforced polylactic acid composites by 3Dprinting[J].Journal of Materials Processing Technology,2016,238:218-225.
[13]马国锋,谭跃刚,张帆,等.碳纤维长纤3D打印的路径跳转处理[J].机械设计与研究,2017,33(3):147-150.MA Guofeng,TAN Yuegang,ZHANG Fan,et al.Research on path jumping processing of long carbon fiber3D printing[J].Machine Design and Research,2017,33(3):147-150.
[14]COLUCCI G,OSTROVSKAYA O,FRACH A,et al.The effect of mechanical recycling on the microstructure and properties of PA66 composites reinforced with carbon fibers[J].Journal of Applied Polymer Science,2015,132(29).
[15]TIAN X,LIU T,WANG Q,et al.Recycling and remanufacturing of 3D printed continuous carbon fiber reinforced PLA composites[J].Journal of Cleaner Production,2017,142:1609-1618.
[16]杨铨铨,梁基照.连续纤维增强热塑性复合材料的制备与成型[J].塑料科技,2007,35(6):34-40.YANG Quanquan,LIANG Jizhao.Preparation and forming of continuous fiber reinforced thermoplastic plastics composites[J].Plastic Technology,2007,35(6):34-40.
[17]康永,柴秀娟,艾罡.纤维增强热塑性树脂基复合材料界面问题研究[J].高科技纤维与应用,2010,35(6):51-53.KANG Yong,CHAI Xiujuan,AI Gang.Research on the interface issue of fiber reinforced thermoplastic resin matrix composites[J].Hi-Tech Fiber&Application,2010,35(6):51-53.
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