汇报时间：2023年9月6日(星期二) 上午10: 00

汇报地点：曲江校区南一楼A座3楼会议室

汇报人：张曼玉

国际会议信息

会议名称：The 23rd International Conference on Composite Materials (ICCM23)

会议时间：July 31-August 4, 2023

会议地点：ICC,Belfast, Northern Ireland, UK.

会议简介：The 23rd International Conference on Composites Materials (ICCM 23) will be held in Belfast, Northern Ireland, from July 30th to August 4th 2023. ICCM is the premier international conference in the field of composite materials and was first held in 1975 in the cities of Geneva and Boston. Since that time the conference has been held biennially in North American, European, Asian, Oceanic, and African cities. ICCM 23 will attract the leading researchers and practitioners, to report and exchange ideas on the latest developments in the advancement and exploitation of a wide range of composites materials and structures. The general themes of material development, testing, modelling, manufacturing and design will encompass a breadth of topics which will provide a comprehensive global snap-shot of the state-of-the-art. Plenary and keynote lectures from pre-eminent leaders in the field are planned, along with oral and poster presentations from an expected large delegation coming together in Belfast from all corners of the world. A number of site visits and an entertaining social programme are also planned.

参会论文信息

Title: 3D PRINTING OF FULLY RECYCLABLE CONTINUOUS FIBER SELF-REINFORCED COMPOSITES AND THERMAL DEGRADATION MECHANISM

Author: Manyu Zhang, Xiaoyong Tian,Tengfei Liu, Lingling Wu

Abstract: A 3D printing approach for fully recyclable continuous fiber self-reinforced composites (CFSRCs) utilizing supercooled polymer melts was proposed. Continuous autologous fibers were added to the supercooled melt zone below the polymer matrix melting temperature avoiding fiber melting which successfully enlarged the processing temperature window. Through controlled supercooled melt conditions and heat transfer simulation, the supercooled melting temperature gradient control strategy for 3D printing CFSRCs were established. The processing temperature window enlarged from 2℃ to 30℃. Then the intrinsic connection among the printing temperature, crystallization behavior and mechanical properties of 3D printed CFSRCs were analysed. Furthermore, the interlaminar shear strength and transverse tensile property of CFSRCs were excellent than carbon fiber reinforced composites. Due to the fact that the self-reinforced composite reinforcement and matrix are homogeneous materials, the recuperation procedure does not require to separate fiber from the matrix. The continuous fiber self-reinforced PPS composites were mechanical ground and directly remanufactured by screw extrusion 3D printing. The recycling procedure were sped up and the thermal process of the material were reduced. Lastly, recycled self-reinforced composites showed no significant loss in tensile properties and even a little increase after multiple recycling cycles due to the melted PPS fiber in comparison with original PPS matrix. The thermal degradation mechanism of recycled composites were focused. Fully recyclable CFSRCs based on 3D printing potentially establish a closed-loop recycling strategy for space applicationsns.

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