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凹凸棒土(AT)经过提纯,采用原位聚合方法制备聚氨酯(PU)/凹凸棒土(AT)复合材料。通过SEM、FT-IR、DMA等测试方法对PU/AT复合材料的结构进行了表征。结果表明:复合材料的热稳定性和玻璃化温度较PU都有明显提高,拉伸强度也有较大提高。并分析了AT对复合材料结构的影响和作用机理。
Attapulgite (AT) was purified by in situ polymerization to prepare PU / attapulgite (AT) composites. The structure of PU / AT composites was characterized by SEM, FT-IR and DMA. The results show that the thermal stability and glass transition temperature of the composites are obviously higher than that of PU, and the tensile strength is greatly improved. The effect of AT on the structure of composites and the mechanism of action were analyzed.