Synthesis of flexible polyurethane foams by the partial substitution of polyol by steatite

Abstract This work describes the synthesis of composites steatite/flexible polyurethane by replacing 4.5 wt. % of polyol with steatite rock powder. We evaluated two mechanical properties of composites (comfort factor and support factor) for various formulations based on a fractional factorial design. The new synthesized composites showed higher support factor, greater comfort factor, and lower cost, compared to conventional flexible polyurethane foams. There is not a significant change in the chemical composition of the foams, due to substitution of 4.5 wt. % polyol by steatite. However, there was a decrease in cell size and greater interaction between the hard segments of the composite.

摘要 本研究报道了以块滑石（steatite）岩粉替代4.5 wt.%聚多元醇，制备块滑石/柔性聚氨酯复合材料的合成方法。本研究基于部分因子设计（fractional factorial design），针对多种配方体系，对复合材料的两项力学性能——舒适因子与支撑因子——进行了评测。与传统柔性聚氨酯泡沫相比，本研究合成的新型复合材料展现出更高的支撑因子、更优的舒适因子以及更低的制备成本。由于以块滑石替代4.5 wt.%聚多元醇，泡沫的化学组成未发生显著变化。但复合材料的泡孔尺寸有所减小，且其硬段间的相互作用更强。