In the present work, we report on rigid polyurethane foams based on modified used cooking oil. The bio-polyols with different hydroxyl values and viscosities as well as number average molecular weights from municipal waste were obtained by epoxidation and ring-opening reaction with diethylene glycol. The bio-polyols were used to prepare open-cell polyurethane foams for applications in construction industry. It was noticed that the structures of the bio-polyols do not have a significant effect on the reactivity of the resultant polyurethane systems. The apparent densities of the final foams were comparable and in the range of 12–17 kg/m³. Beneficial effects of both the bio-polyols on the cellular structures as well as on the mechanical properties and thermal conductivity of the modified foams were observed, especially when a petrochemical polyol was replaced with 40-60 wt.% of the bio-polyols.

在目前的工作中，我们报告了基于改性废食油的硬质聚氨酯泡沫。通过与二甘醇的环氧化和开环反应，获得了来自城市垃圾的具有不同的羟值和粘度以及数均分子量的生物多元醇。该生物多元醇用于制备用于建筑行业的开孔聚氨酯泡沫。注意到生物多元醇的结构对所得聚氨酯体系的反应性没有显着影响。最终泡沫的表观密度是可比的，范围为12-17 kg / m ³。观察到生物多元醇对多孔结构以及改性泡沫的机械性能和导热性的有益作用，特别是当石油化学多元醇被40-60重量％的生物多元醇代替时。