Fernandes Raquel A, Ferreira Nuno, Lopes Sandro, Santos Jorge, Bento Pereira Nelson, Ferreira Nuno Oliveira, Nunes Lina, Martins Jorge M, Carvalho Luisa H
ARCP Colab-Rede de Competências em Polímeros, Rua Júlio de Matos, 828/882, 4200-355 Porto, Portugal.
LEPABE-Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, s/n, 4200-465 Porto, Portugal.
Polymers (Basel). 2023 Dec 31;16(1):137. doi: 10.3390/polym16010137.
The search for innovative and sustainable solutions to improve the energy efficiency of the construction industry has been a hot topic for researchers due to the tremendous impact of insulator materials in the thermal comfort of buildings. In the present work, an innovative lightweight composite material with thermal insulation properties was developed, for the first time, by using cardoon particles and polyurethane. The formulation of the composite material was optimized in terms of cardoon fraction and the polyol/isocyanate ratio, to achieve the best compromise between internal bond (IB) strength and thickness swelling (TS). The best performing composite was PU75-CP45, with 45 wt% of cardoon particles and 75% of isocyanate, achieving an IB of 0.41 MPa and a TS of 5.3%. Regarding insulation properties, the PU75-CP45 composite material exhibits a promising performance when compared to conventional construction industry materials by tuning its thickness. Additionally, the composite material presented very low emissions of volatile organic compounds and formaldehyde (bellow to legislation levels) and high resistance to biological degradation.
由于隔热材料对建筑物热舒适性有巨大影响，寻求创新且可持续的解决方案以提高建筑行业的能源效率一直是研究人员的热门话题。在当前工作中，首次通过使用刺苞菜蓟颗粒和聚氨酯开发出一种具有隔热性能的创新轻质复合材料。复合材料的配方在刺苞菜蓟含量和多元醇/异氰酸酯比例方面进行了优化，以在内部粘结（IB）强度和厚度膨胀（TS）之间实现最佳折衷。性能最佳的复合材料是PU75-CP45，含有45 wt%的刺苞菜蓟颗粒和75%的异氰酸酯，其IB为0.41 MPa，TS为5.3%。关于隔热性能，通过调整厚度，PU75-CP45复合材料与传统建筑行业材料相比表现出良好的性能。此外，该复合材料的挥发性有机化合物和甲醛排放量极低（低于法规水平），且具有高抗生物降解性。
