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首页> 外文期刊>Polymers for advanced technologies >The rheological behavior of ethylene vinyl acetate copolymer/rectorite nanocomposites during the melt extrusion process
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The rheological behavior of ethylene vinyl acetate copolymer/rectorite nanocomposites during the melt extrusion process

机译：乙烯-乙酸乙烯酯共聚物/锂蒙脱石纳米复合材料在熔融挤出过程中的流变行为

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To optimize the preparation process for ethylene vinyl acetate (EVA)/rectorite nanocomposites during the melt extrusion, the effect of rectorite on the rheological property of molten polymer has been explored in this paper. The dispersion of rectorite in EVA was probed by X-ray diffraction, and the rheological behaviors of EVA copolymer and EVA/rectorite nanocomposites during the extrusion process were investigated by means of HAAKE minilab. The positron results reveal that introducing the rectorite in EVA matrix increases the interfaces in composites. And the rheological results indicate that the viscosity of EVA and EVA/rectorite nanocomposites in the molten state was influenced by the processing temperature, processing time and shearing rate. For all the samples, the viscosity increases with increasing the shear rate, and decreases with increasing extrusion temperature. Moreover, compared with the pure EVA, the EVA/rectorite nanocomposite presents a lower viscosity at the same processing condition. Copyright (c) 2016 John Wiley & Sons, Ltd.
机译：为了优化熔融挤出过程中乙烯乙酸乙烯酯（EVA）/锂蒙脱石纳米复合材料的制备工艺，本文研究了累托石对熔融聚合物流变性能的影响。用X射线衍射法研究累托石在EVA中的分散性，并用HAAKE微型实验室研究了EVA共聚物和EVA /锂蒙脱石纳米复合材料在挤出过程中的流变行为。正电子结果表明，在EVA基质中引入累托石可增加复合材料的界面。流变结果表明，EVA和EVA /锂蒙脱石纳米复合材料在熔融态的粘度受加工温度，加工时间和剪切速率的影响。对于所有样品，粘度随着剪切速率的增加而增加，并且随着挤出温度的增加而降低。而且，与纯EVA相比，EVA /锂蒙脱石纳米复合材料在相同的加工条件下具有较低的粘度。版权所有（c）2016 John Wiley＆Sons，Ltd.

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