Thermal reshaping as a route for reuse of end-of-life glass fibre-reinforced acrylic composites
Thermal reshaping as a route for reuse of end-of-life glass fibre-reinforced acrylic composites
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DOI：
10.1016/j.compositesb.2023.110662
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
Winifred Obande;Danijela Stankovic;A. Bajpai;Machar Devine;C. Wurzer;Anna Lykkeberg;Jennifer A. Garden;Conchúr M. Ó Brádaigh;D. Ray
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文献类型：
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作者：
Winifred Obande;Danijela Stankovic;A. Bajpai;Machar Devine;C. Wurzer;Anna Lykkeberg;Jennifer A. Garden;Conchúr M. Ó Brádaigh;D. Ray
采用热重塑模拟了液体树脂注入热塑性丙烯酸复合材料层合板的寿命终止再利用，并研究了其对基体主导力学性能和微观结构的影响。l型层压板在室温下灌注，并进行1或4次热压压扁循环（在120°C； 11 bar下25分钟）。与原始参考材料相比，经过再加工的层压板的横向抗弯强度提高了13%。这样的方案可以很容易地实现高价值的再利用，而不会牺牲纤维长度尺度，并且在连续的再加热循环中具有最小的累积质量损失（10次循环：2%和15次循环：2.6%）。这项研究提供了重要的见解，以促进更好地理解热压再加工的性能限制，为可持续复合材料在循环经济中的实际再利用和再应用提供信息。
Thermal reshaping has been employed to simulate the end-of-life reuse of liquid-resin-infused thermoplastic acrylic composite laminates, and the associated effects on matrix-dominated mechanical performance and microstructure have been studied.L-shapedlaminates were infused at room temperature and subjected to 1 or 4 hot-press flattening cycles (25 min at 120 °C; 11 bar). Compared to the original references, up to 13% higher transverse flexural strengths were measured for the reprocessed laminates. Such a scheme may be readily implemented for high-value reuse without sacrificing fibre length scales, and with minimal cumulative mass loss over successive reheating cycles (10 cycles: 2% and 15 cycles: 2.6%). This study provides important insights to foster a greater understanding of the performance limits of hot-press reprocessing to inform the practical reuse and re-application of sustainable composites in a circular economy.