Kurańska Maria, Malewska Elżbieta, Ożóg Hubert, Sędzimir Julia, Put Aleksandra, Kowalik Natalia, Michałowski Sławomir, Zemła Marcin, Kucała Michał, Prociak Aleksander
Department of Chemistry and Technology of Polymers, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland.
Polymers (Basel). 2024 Apr 19;16(8):1145. doi: 10.3390/polym16081145.
Natural oils from watermelon, cherry, black currant, grape and pomegranate fruit seeds were applied in the synthesis of biopolyols using the transesterification reaction. In this manuscript, the preparation possibility of open-cell foams from a polyurethane system in which petrochemical polyol was fully replaced with biopolyols is analyzed. Firstly, polyurethane foam systems were developed on a laboratory scale, and they were next tested under industrial conditions. It was shown that the foaming method has a significant impact on the foaming process and the cell structure of obtained foams as well as their thermal insulation properties. Based on the conducted research, it was found that the method of processing the polyurethane system has a significant impact on the properties of open-cell spray foams. Foams produced under industrial conditions have a much higher cell density, which has a positive effect on their selected physical-mechanical properties compared to foams produced on a laboratory scale. The open-cell biofoams obtained using a high-pressure machine had apparent densities 12-17 kg/m, thermal conductivity coefficients 35-37 mW/m·K, closed-cell contents < 10% and were dimensionally stable at low and high temperatures.
来自西瓜、樱桃、黑加仑、葡萄和石榴果实种子的天然油被应用于通过酯交换反应合成生物多元醇。在本论文中，分析了用生物多元醇完全替代石化多元醇的聚氨酯体系制备开孔泡沫的可能性。首先，在实验室规模上开发了聚氨酯泡沫体系，然后在工业条件下对其进行测试。结果表明，发泡方法对发泡过程、所得泡沫的泡孔结构及其隔热性能有显著影响。基于所进行的研究，发现聚氨酯体系的加工方法对开孔喷涂泡沫的性能有显著影响。与实验室规模生产的泡沫相比，工业条件下生产的泡沫具有更高的泡孔密度，这对其选定的物理机械性能有积极影响。使用高压机器获得的开孔生物泡沫的表观密度为12 - 17 kg/m，导热系数为35 - 37 mW/m·K，闭孔含量< 10%，并且在低温和高温下尺寸稳定。
