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 %.