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通过熔融共混制备了尼龙-6(PA6)/埃洛石纳米管(HNTs)纳米复合材料。研究了HNTs含量对PA6/HNTs纳米复合材料微观形态、力学性能、结晶行为的影响。结果表明,在熔融共混条件下,HNTs不经过任何表面处理即可以纳米尺度均匀地分散于PA6基体中。随着HNTs含量的增加,纳米复合材料的弯曲强度和弯曲模量显著提高。DSC结果显示HNTs的存在起到了成核剂的作用,提高了PA6的结晶温度。HNTs份数少时能提高PA6/HNTs纳米复合材料的结晶度,份数多时会使其结晶度下降和生成不稳定的晶体。
Nylon 6 (PA6) / halloysite nanotubes (HNTs) nanocomposites were prepared by melt blending. The effects of HNTs content on the morphology, mechanical properties and crystallization behavior of PA6 / HNTs nanocomposites were investigated. The results show that under the conditions of melt blending, HNTs can be uniformly dispersed in the PA6 matrix on the nanoscale without any surface treatment. With the increase of HNTs content, the flexural strength and flexural modulus of nanocomposites increased significantly. DSC results show that the presence of HNTs acts as a nucleating agent and raises the crystallization temperature of PA6. When the content of HNTs is small, the crystallinity of PA6 / HNTs nanocomposites can be increased. If the number of HNTs is too large, the crystallinity will be decreased and unstable crystals will be formed.