改性蒙脱石及其不饱和聚酯树脂纳米复合材料

以天然钙基膨润土为原料,制备稳定的钠基蒙脱石悬浮液.再以邻苯二甲酸为改性剂,Co2＋作为沉淀剂,制备有机蒙脱石,并探索了原料配比对蒙脱石改性效果的影响.XRD表明：经邻苯二甲酸改性的蒙脱石d001层间距被撑开到1.31823 nm,说明部分有机物进入到蒙脱石层间,制备出了半剥离状态的有机蒙脱石.将制得的有机蒙脱石与不饱和聚酯树脂原位复合,并对复合材料的冲击强度进行测试.结果表明：与纯不饱和聚酯树脂相比,当有机土的添加量为3%时,复合材料的冲击强度是不饱和聚酯树脂的1.43倍.

Modified Montmorillonite and Unsaturated Polyester Resin Nanocomposites

Stable sodium based montmorillonite suspension was prepared using natural calcium and sodium based bentonite as raw material.On this basis,the organic montmorillonite was prepared using Co2＋ as the precipitant agent,and phthalic acid as modifier.The influence of the ratios of raw materials on modification of montmorillonite was studied.The X-ray diffraction results showed that the layer spacing of phthalic acid modified montmorillonite were increased to 1.318 23 nm,indicating that the organic matter entered into montmorillonite layers.Organic montmorillonite/unsaturated polyester resin composite was prepared and impact test showed that compared with pure unsaturated polyester resin,when the content of organic montmorillonite was 3 %,the impact strength was increased by 43.31 %.