【摘要】 以热固性的聚氨酯-丙烯酸酯乳液和热塑性的醋丙乳液复配为成膜物、聚磷酸铵为酸源、白糖为碳源、双氰胺和磷酸氢二铵为气源、珍珠岩为阻燃协助剂,制备了膨胀型水性防火涂料。采用模拟大板燃烧法对其耐火性能进行了研究,并用数码相机和光学显微镜观察其碳孔状况,结果表明:开孔膨胀珍珠岩对防火涂料的耐火性能有良好的协助作用,经碳层光学照片分析表明添加珍珠岩后也有利于改善膨胀碳层的性能。更多还原

【Abstract】 The waterborne intumescent fire retardant coatings was prepared by using thermoset-polyurethane-acrylic and thermoplastic-vinyl-acetate-acrylic latex as binder,ammonium polyphosphate as acid source,sugar as carbon source,dicyandiamide and diammonium phosphate as blowing agents,perlite as flame retardant synergistic agent.Flame-retardant performance of the coating was investigated by simulated big panel combustion,and the char residues were observed by digital camera and optical microscope.The results showed that perlite has helpful influence on fire-retardant performance.And observation of optical pictures showed that the charring layer of the intumescent fire retardant coating became better after mixing perlite.更多还原