【摘要】 以纳米氢氧化镁粉体为分散相研究对象,制备纳米氢氧化镁/NBR、纳米氢氧化镁/EPDM、纳米氢氧化镁/SBR和纳米氢氧化镁/硅橡胶4种复合材料,研究其物理性能和阻燃性能。结果表明,纳米氢氧化镁赋予复合材料良好"无卤"阻燃性能的同时,具有优异的补强效果;纳米氢氧化镁粉体分散度越高,与基体的界面作用越强,复合材料的物理性能越好;纳米氢氧化镁对NBR补强效果最好,对硅橡胶的补强效果最差。对纳米氢氧化镁粉体进行表面处理,可提高其在EPDM中的分散度,增大其与橡胶间的界面作用力,从而显著提高EPDM复合材料的物理性能。更多还原

【Abstract】 The nano-magnesium hydroxide/NBR,nano-magnesium hydroxide/SBR and nano-magnesium hydroxide/EPDM and nano-magnesium hydroxide/silicone rubber composites were prepared,and their physical properties and flame-retardance were investigated.The results showed that the magnesium hydroxide gave the composites good halogen-free flame-retardance combined with the excellent reinforcement efficiency;the higher the dispersity of nano-magnesium hydroxide powder,the stronger the interfacial action between nano-magnesium hydroxide powder and rubber matrix,and the better the physical properties of composite;in terms of reinforcement efficiency,the nano-magnesium hydroxide was the best for NBR and the poorest for silicone rubber.The dispersity of nano-magnesium hydroxide powder in EPDM and the interfacial action improved by the surface modification of powder,thus the physical properties of the composite improved.更多还原