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Study of nanocomposites prepared by melt blending TPU and montmorillonite

机译:TPU与蒙脱土熔融共混制备的纳米复合材料的研究

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摘要

The intercalated thermoplastic polyurethane (TPU)/ montmorillonite (MMT) nanocomposites were prepared by melt blending TPU and organic octadecylammonium-treated MMT (ODA-MMT) at 150-155 degrees C for 10 min. Compared with those of TPU/montmorillonite composites, the interface interaction and dispersion of TPU/ ODA-MMT nanocomposites were improved remarkably. The tensile strength and tear strength of the TPU/ ODA-MMT nanocomposites were higher than those of pure TPU, and the MMT platelets dispersed on the nanometer scale in TPU matrix had reinforce effect. Due to the "labyrinth" effect of the MMT platelets dispersed on the nanometer scale in the TPU matrix caused by the eximious barrier and strong interaction between the MMT platelets and TPU, the temperature of initial weight loss of the TPU/ODA-MMT nanocomposites was higher than that of pure TPU and TPU/ MMT composites in the second thermodegradation step.
机译:插层热塑性聚氨酯(TPU)/蒙脱土(MMT)纳米复合材料是通过在150-155摄氏度下将TPU和经过有机十八烷基铵处理的MMT(ODA-MMT)熔融共混10分钟而制备的。与TPU /蒙脱土复合材料相比,TPU / ODA-MMT纳米复合材料的界面相互作用和分散性明显提高。 TPU / ODA-MMT纳米复合材料的拉伸强度和撕裂强度均高于纯TPU,并且纳米尺寸的MMT血小板分散在TPU基质中具有增强作用。由于MMT血小板与TPU之间存在的显着屏障以及强烈的相互作用,导致MMT血小板分散在TPU基质中的纳米尺度上的“迷宫”效应,TPU / ODA-MMT纳米复合材料的初始失重温度为在第二个热降解步骤中,比纯TPU和TPU / MMT复合材料要高。

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