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首页> 外文期刊>Journal of Applied Polymer Science >Rheological properties of a new rubbery nanocomposite: polyepichlorohydrin/organoclay nanocomposites
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Rheological properties of a new rubbery nanocomposite: polyepichlorohydrin/organoclay nanocomposites

机译：新型橡胶纳米复合材料的流变特性：聚表氯醇/有机粘土纳米复合材料

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摘要

Nanocomposites of organophilic montmorillonite clay (OMMT) and polyepichlorohydrin (PECH) were intercalated by a solvent-casting method using dichloromethane as a solvent. The intercalation of PECH segments in the interlayers of the clay was confirmed by X-ray diffraction, and the intercalation spacing was calculated. The increase in the onset temperature of the thermal degradation indicated the enhancement of thermal stability of PECH due to intercalation. Rheological properties of the PECH/OMMT nanocomposites were investigated using a rotational rheometer in a steady shear mode. The steady shear viscosity increased with the clay loading, and the shear thinning viscosity data were fitted well with the Carreau model. From the normalized shear viscosity analysis, a critical shear rate that is a crossover from a Newtonian plateau to a shear thinning region was found to approximately equal the inverse of the characteristic time of the nanocomposites. (C) 2002 Wiley Periodicals, Inc. [References: 45]
机译：通过使用二氯甲烷作为溶剂的溶剂浇铸法，将亲有机蒙脱土粘土（OMMT）和聚表氯醇（PECH）的纳米复合材料插入。通过X射线衍射确认了PECH链段在粘土的夹层中的插入，并且计算了插入间隔。热降解开始温度的升高表明由于插层，PECH的热稳定性增强。 PECH / OMMT纳米复合材料的流变特性使用旋转流变仪以稳定剪切模式进行了研究。稳态剪切粘度随黏土负荷的增加而增加，剪切稀化粘度数据与Carreau模型拟合得很好。通过归一化的剪切粘度分析，发现临界剪切速率是从牛顿高原到剪切稀化区域的过渡，大约等于纳米复合材料特征时间的倒数。 （C）2002 Wiley Periodicals，Inc. [参考：45]

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