玻化微珠-聚氨酯泡沫复合材料的制备与表征

Preparation and Characterization of Glazed Hollow Bead-Polyurethane Foam Composites

将耐火的无机玻化微珠与阻燃化的聚氨酯进行原位复合,制备具有良好保温效果和阻燃性能的墙体保温材料;通过扫描电镜(SEM)、氧指数和力学性能评价,探究玻化微珠粒径和聚醚种类对泡沫复合材料结构和性能的影响。结果表明,玻化微珠粒径会明显改变复合材料的泡孔结构,强重比和氧指数呈逐渐增加趋势;不同种类聚醚多元醇因为相对分子质量和官能度的差别,对聚氨酯发泡的反应特性、复合材料的成型特性、泡沫结构和性能都会产生影响。

A wall insulation material with good heat insulation and fire resistance was prepared by in-situ compounding of the inorganic glazed hollow bead （GHB） and fire-resistant polyurethane （PU）. The effects of GHB particle size and polyol species on the structures and performance of foam composite were investigated by SEM, oxygen index and mechanical evaluation. Test results indicate that the GHB particle size has significant influences on the bubble structure of foam composites. Both strength-to-mass ratio and oxygen index of foam composites are even-increasing upon decreasing the GPB particle size. Due to various molecular weights and functionality that affect he reaction rate between polyisocyanate and polyols, the polyether polyols species influence the foaming properties, microstructures and some performances of the foam composites to some extent.