累托石/NR纳米复合材料的结构与性能研究

研究乳液法和熔体法制备的累托石/NR纳米复合材料的结构与性能。结果表明，乳液法累托石/NR纳米复合材料为层间无高分子插入的隔离型纳米复合材料，熔体法累托石/NR纳米复合材料为典型的插层型纳米复合材料；当应变小于100％时，熔体法制备的复合材料应力较大，当应变大于100％时，乳液法制备的复合材料应力较大；当累托石用量较小时，乳液法制备的复合材料撕裂强度高于熔体法制备的复合材料；乳液法和熔体法制备的两种复合材料热稳定性差别不大，均好于纯NR。;The structures and properties of rectorite/NR composites prepared by emulsion method and melt method respectively were investigated.The results showed that the emulsion method rectorite/NR composite was a typical “separated” nanocomposite，in which no polymer molecule was intercalated into the rectorite layers，and in contrast，the melt method rectorite/NR composite was a typical intercalated nanocomposite；the stress of the melt method nanocomposite was greater as the strain was lower than 100%，and the stress of the emulsion method nanocomposite was greater as the strain was higher than 100%；the tear strength of the emulsion method nanocomposite was higher than that of the melt method nanocomposite as the proportion of rectorite was lower；and the thermal stabilities of the both nanocomposites were similar to each other and better than that of pure NR compound