几种插层剂改性的MMT／PA66纳米材料的性能

用多种插层剂合成了有机改性蒙脱土（MMT），将PA66与改性MMT共混制成纳米材料，表征了其结构和力学性能。5％的纳米MMT1631能将PA66的冲击强度提高近50％，3％的MMT1827能将PA66的断裂伸长率提高52．5％，观察到MMT／PA66纳米塑料的无熔滴等阻燃特性，总结了不断插层剂改性MMT／PA66纳米材料的特点，发现MMT与常规阻燃剂之间有力学协效作用和阻燃协效作用，能提高PA66的力学性能和阻燃性能。

Performance of MMT/PA66 Nano Composites Modified by Several Intercalation-Agents

The organically-modified MMTs are synthesized with three kinds of intercalation agent,then hybrided with PA66 and conventional fire retardant to manufacture nanaoplastics.Their structures are characterized,mechanical test is performed and the fire retardancy of this kind of polymer layered silicate(PLS)nano composites is observed.Different kinds of organically-modified MMT show different properties.The introduction of 5 %MMT 1631 leads to about 50 % increase in the impact strength of PA66.The introduction of 3 %MMT 1827 leads to about 52.5 %increase in the elongation at break.There is a kind of mechanical synergistic effect and fire retardancy synergistic between MMT and other fire retardant,which improves the properties of PA66.