采用PI预聚体法合成硬质聚氨酯酰亚胺泡沫塑料,分析了发泡剂水对泡沫塑料密度、表面粉化程度以及力学性能的影响.运用幂次法则建立了力学性能与密度之间的关系,并利用体视显微镜和偏光显微镜对泡沫塑料的泡孔结构进行了研究.结果表明,硬质聚氨酯-酰亚胺泡沫塑料的密度、抗压强度与压缩模量、冲击强度以及泡孔棱厚随水用量的增加逐渐减小;孔径和表面粉化程度随水用量的增加而逐渐增大;密度与抗压强度、压缩模量、冲击强度之间的密度指数分别为1.78,1.55和0.72.
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