摘要
将预分散的纳米氢氧化镁[Mg(OH)2]加入聚氨酯弹性体(PUE)反应体系进行原位聚合。由于预聚物粘度的影响,纳米粒子的最大添加量为5%(质量分数)。力学测试表明,所得Mg(OH)2/聚氨酯弹性体纳米复合材料的力学性能较纯PU有较大提高。复合材料置于60℃的水中3周后,拉伸强度保留93%。XRD测试显示复合材料中无明显结晶。氧指数(IO)测定显示,纳米Mg(OH)2的加入,可明显提高复合材料的难燃性能、当其质量分数为5%时,氧指数可达31。
Nano - Mg（OH）2 was dispersed in advance and added to the reacting system where PU was prepared by in-suit polymerization. Because the effect of prepolymer viscosity,the maximal addition of nano Mg（OH）2 is 5 wt % in this research. The results of mechanical test shows the mechanical performance of polyurethane/ Mg（OH）2 nanocomposite is improved greatly. The tensile strength of nanocomposite reserved 97% after keep three weeks in 60℃ water. XRD analysis indicates that no obvious crystal in nanocomposite. IO test shows that with the increasing of Mg（OH）2 content , flame retardant of composite improved remarkably . IO can reach 31 when the content of Mg（OH）2 is 5%.
出处
《弹性体》
CAS
2007年第2期10-13,共4页
China Elastomerics
基金
河南省高等学校青年骨干教师基金资助计划项目(豫教高[2005]461号)
