Valenzuela Expósito Juan José, Picazo Camilo Elena, Corpas Iglesias Francisco Antonio
Higher Polytechnic School of Linares, University of Jaén, 23700 Linares, Spain.
Polymers (Basel). 2024 Dec 23;16(24):3604. doi: 10.3390/polym16243604.
In recent years, the construction industry has faced challenges related to rising material costs, labor shortages and environmental sustainability, resulting in an increased interest in modular construction cores composed of recycled materials, such as XPS, PUR, PLW and GFRP, from waste from the truck body industry. Two resins, PUR and polyester, were used to bond these recycled composites. Physical, chemical and mechanical analyses showed that the panels formed with PUR resin had superior workability due to the higher open time of the resin, 11.3% better thermal conductivity than the commercial PLW panel (SP-PLW) and reduced porosity compared to those using polyester resin. The mechanical performance of the panels improved with higher structural reinforcement content (PLW and GFRP). Compared to a commercial panel (SP-PLW), the SP-RCM1 recycled panel showed 4% higher performance, demonstrating its potential for sustainable building applications. Thermal and microscopic characterizations showed good adhesion of the materials in the best performing formulations related to higher thermal stability. Therefore, this research aims to demonstrate the feasibility of using waste from the car industry in the manufacture of sandwich panels for modular construction to address these issues.
近年来，建筑业面临着与材料成本上升、劳动力短缺和环境可持续性相关的挑战，这使得人们对由回收材料制成的模块化建筑芯材的兴趣日益增加，这些回收材料包括来自卡车车身行业废料中的挤塑聚苯乙烯（XPS）、聚氨酯（PUR）、轻木（PLW）和玻璃纤维增强塑料（GFRP）。两种树脂，即聚氨酯和聚酯，被用于粘结这些回收复合材料。物理、化学和力学分析表明，由于树脂的开放时间更长，用聚氨酯树脂制成的面板具有更好的加工性能，其导热系数比商用轻木板（SP-PLW）高11.3%，且与使用聚酯树脂的面板相比孔隙率更低。随着结构增强材料（PLW和GFRP）含量的增加，面板的力学性能得到改善。与商用面板（SP-PLW）相比，SP-RCM1回收面板的性能高出4%，显示出其在可持续建筑应用中的潜力。热学和微观表征表明，在与更高热稳定性相关的最佳性能配方中，材料具有良好的附着力。因此，本研究旨在证明利用汽车行业的废料制造用于模块化建筑的夹芯板以解决这些问题的可行性。
