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首页> 外文期刊>Polymers for advanced technologies >Influence of the nanofiller type and content on permeation characteristics of multifunctional NR nanocomposites and their modeling
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Influence of the nanofiller type and content on permeation characteristics of multifunctional NR nanocomposites and their modeling

机译:纳米填料类型和含量对多功能NR纳米复合材料渗透特性的影响及其建模

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摘要

Along with other properties, superior gas permeation behavior would impart an extra dimension to multifunctional natural rubber (NR) nanocomposites used in various applications, like tires. For the first time, the impact on thermodynamics and kinetics of oxygen transport has been evaluated for nano, micro, and dual filler based multifunctional NR nanocomposites through oxygen permeation studies at three different temperatures. It is seen that, the kinetics is less affected by platelet like nanofillers, while the thermodynamics and eventual permeability are not altered much by fibrous nanofillers. The permeability of the nanocomposites decreased in the presence of nanofillers due to high aspect ratio and exquisite dispersion, as ascertained from morphological studies, which caused increment in tortuosity and the reduction in free volume. Relative permeabilities were compared to predictions of existent permeation models and a novel function was successfully introduced to address deviations in a model. Finally, nearly 60% decrement in permeability of dual filler based nanocomposites explained by the formation of zeta potential driven filler associations indicate potency in development of thinner, but stronger and more durable multifunctional materials with longer air retention capabilities. These could be applied in tire research to reduce material, energy costs and increase fuel efficiencies.
机译:除其他特性外,优异的气体渗透性能还将为轮胎等各种应用中使用的多功能天然橡胶(NR)纳米复合材料赋予额外的尺寸。首次通过在三个不同温度下的氧气渗透研究,评估了基于纳米,微米和双填料的多功能NR纳米复合材料对氧气输送的热力学和动力学的影响。可以看出,动力学受血小板之类的纳米填料的影响较小,而纤维纳米填料的热力学和最终的渗透性并没有太大改变。如形态学研究所确定的,由于高纵横比和精细分散,在纳米填料的存在下,纳米复合材料的渗透性降低,这导致曲折度的增加和自由体积的减少。将相对渗透率与现有渗透模型的预测值进行比较,并成功引入了一种新颖的功能来解决模型中的偏差。最终,基于zeta电位驱动的填料缔合的双填料基纳米复合材料的渗透率下降了近60%,这表明开发出具有更长的空气保持能力的更薄,更坚固,更耐用的多功能材料的潜力很大。这些可用于轮胎研究,以减少材料,能源成本并提高燃料效率。

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