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首页> 外文期刊>European Polymer Journal >Effect of the aspect ratio of silicate platelets on the mechanical and barrier properties of hydrogenated acrylonitrile butadiene rubber (HNBR)/layered silicate nanocomposites
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Effect of the aspect ratio of silicate platelets on the mechanical and barrier properties of hydrogenated acrylonitrile butadiene rubber (HNBR)/layered silicate nanocomposites

机译：硅酸盐薄片的长径比对氢化丙烯腈丁二烯橡胶（HNBR）/层状硅酸盐纳米复合材料的力学性能和阻隔性能的影响

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摘要

The role of the aspect ratio of the layered silicate platelets on the mechanical and oxygen permeation properties of hydrogenated nitrile rubber (HNBR)/organophilic layered silicate nanocomposites was investigated. Montmorillonite (MMT) and fluorohectorite (FHT) bearing the same type of intercalant (i.e., octadecylamine; ODA), however, showing different aspect ratio was involved in this study. The dispersion of the layered silicates was assessed by X-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. Increasing aspect ratio (MMT < FHT) resulted in higher stiffness under uniaxial tensile loading. The dispersion state ("secondary structure") of the organophilic layered silicates reduced dramatically the oxygen permeability of the rubber matrix based on the labyrinth principle. The lowest oxygen permeability was measured for the HNBR/FHT-ODA films in which the layered silicates had the highest aspect ratio. By varying the FHT-ODA volume fraction in the latter compound the mechanical and permeation properties were measured and modelled. It was found that the modified Guth's and Nielsen's equations predicted accurately the mechanical and permeation responses, respectively. (C) 2007 Elsevier Ltd. All rights reserved.
机译：研究了层状硅酸盐薄片的长径比对氢化丁腈橡胶（HNBR）/亲有机性层状硅酸盐纳米复合材料的机械性能和氧渗透性能的影响。蒙脱石（MMT）和氟锂蒙脱石（FHT）带有相同类型的嵌入剂（即十八烷基胺; ODA），但是，该研究涉及不同的长宽比。分别通过X射线衍射（XRD）和透射电子显微镜（TEM）评估层状硅酸盐的分散性。长径比的增加（MMT

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