【摘要】 采用全水发泡填充和溶液浸泡两种后处理方式考察聚氨酯宏观结构对发泡水泥密度、孔形貌、吸水率、导热性能及强度的影响,并对其作用机制做了进一步探讨。研究发现,聚氨酯全水发泡填充使得发泡水泥容重下降,吸水率增加,抗压强度随着填充孔径减小而增大;经过聚氨酯溶液浸泡后的水泥发泡体系质量吸水率降低37.2%(质量分数),抗压强度提高364%,导热系数下降32.4%。更多还原

【Abstract】 The effect of macro morphology of polyurethane on density,porous structure,water absorption,thermal conductivity and strength of the foam cement was studied by means of polyurethane solvent sinking and water-blown foam filling.And the interaction mechanism was furtherly investigated as well.The results showed that the density and water absorption of water-blown polyurethane filled foam cement was reduced and enhanced,respectively.The compression of the proceed was increased and then decreased with the increasing of the diameter of filled hole.However,the water absorption of weight and coefficient of thermal conductivity of foam cement board with polyurethane sinked was decreased 37.2wt% and 32.4%,respectively,and the compressive strength of that product was increased by 364%.更多还原