纳米晶镁铝水滑石/聚乙烯复合阻燃料的制备  

Preparation of Mg,Al-Hydrotalcite/Polyethylene Flame-Retardant Nanocomposites

作　　者：任庆利[1] 罗强[2] 曹全喜[1] 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071 [2]第二炮兵工程学院,陕西西安710025

出　　处：《稀有金属材料与工程》2007年第A02期120-123,共4页Rare Metal Materials and Engineering

基　　金：陕西省自然科学基金(2004E1-13)

摘　　要：采用共混法制备聚乙烯/镁铝水滑石纳米复合材料。XRD、SEM、TEM和性能测试表明:镁铝水滑石纳米晶体分散在聚乙烯基体中,且有少部分发生插层;阴离子表面活性剂对水滑石的处理效果要优于偶联剂;pH值对处理效果有一定影响;镁铝水滑石阻燃剂填充聚乙烯体系阻燃效果,要优于填充Al(OH)_3阻燃剂。Mg, Al-hydrotalcite nanocrystalline was synthesized by the liquid reaction method. And Mg, Al-hydrotalcite/polyethylene（PE） flame-retardant nanocomposites were prepared by co-mixing method at atmospheric pressure. Mg, Al-hydrotalcite nanocrystalline was firstly modified to improve its distribution in polyethylene medium. Based on the mechanical and flame-retardant test results, the effect of the surface treatment agents on the Mg, A1-hydrotalcite/PE nanocomposites was investigated; and it is found that the anion surface active agent is better than other surface treatment agents. Moreover, the effect of pH value on Mg, A1-hydrotalcite/PE nanocomposites was also studied. And it is found that the lower the pH value （from 9.5 to 12.5） is, the better the mechanical and flame-retardant properties of the Mg, Al-hydrotalcite/PE nanocomposites are. Besides, XRD, SEM and TEM analysis results show that Mg, A1-hydrotalcite nanocrystalline grains distribute evenly throughout the polyethylene organic medium; and part of polyethylene molecules intercalate Mg, A1-hydrotalcite middle layer. Finally, the flame-retardant test results of the inorganic/PE composites show that Mg, A1-hydrotalcite flame-retardant agent is better than AI（OH）3 flame-retardant agent.

关 键 词：镁铝水滑石 聚乙烯 表面改性 共混法 纳米复合材料 

分 类 号：TQ327[化学工程—合成树脂塑料工业]