PU/SBA-15介孔分子筛复合材料的制备及性能研究

摘要

采用预聚法制备聚氨酯(PU)/SBA-15介孔分子筛复合材料,并采用DSC、SEM、DMA和TG等方法对复合材料进行表征.结果表明,PU/SBA-15分子筛复合材料与纯聚氨酯相比,拉伸强度有所提高,耐撕裂性能明显增大；复合材料的耐热性能和耐溶剂性能提高不明显；SBA-15分子筛对聚氨酯软硬段的微相分离影响较小.%The polyurethane(PU)/zeolite SBA-15 composites were prepared by prepolymerization method and characterized by DSC, SEM, DMA and TG. The result showed that, compared with the pure PU, PU/zeolite SBA-15 composites showed an increasing of tensile strength and tear-resistance property. The heat-resistance property and solvent resistance property of PU/zeolite SBA-15 composites were not increased obviously. The zeolite SBA-15 had not the obvious effect for microphase separation of PU hard segments and soft segments.