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首页> 外文期刊>Journal of Applied Polymer Science >STUDIES ON MISCIBILITY OF BLENDS OF POLY(ETHYLENE-CO-METHYL ACRYLATE) AND POLY(DIMETHYL SILOXANE) RUBBER BY MELT RHEOLOGY
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STUDIES ON MISCIBILITY OF BLENDS OF POLY(ETHYLENE-CO-METHYL ACRYLATE) AND POLY(DIMETHYL SILOXANE) RUBBER BY MELT RHEOLOGY

机译：熔融流变法研究聚乙烯（乙烯共聚物）和聚（二甲基硅氧烷）混合料的混溶性。

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Rheological studies of the blends of poly(ethylene-co-methyl acrylate) (EMA) and poly(dimethyl siloxane) (PDMS) rubber have been carried out at various temperatures and different shear rates by a Monsanto processability tester. The melt viscosities of the blends are found to be higher than that calculated as per the additivity rule, showing a positive deviation, an indication of synergism present in the blends during melt processing. This confirms our earlier finding that the blends are miscible throughout the composition range. The activation energy of flow of the blends are always higher than that calculated as per the additivity rule. The comparatively higher activation energy for the 30:70 EMA-PDMS rubber blend among the systems studied confirms our earlier finding that extent of reaction between EMA and PDMS rubber is significantly higher at this proportion of the blends studied. This substantiates the miscibility between blends of EMA and PDMS rubber throughout the composition range. (C) 1995 John Wiley and Sons, Inc. [References: 19]
机译：孟山都可加工性测试仪已在各种温度和不同的剪切速率下对聚（乙烯-丙烯酸甲酯）（EMA）和聚（二甲基硅氧烷）（PDMS）橡胶的混合物进行了流变学研究。发现共混物的熔体粘度高于根据加性法则计算的粘度，显示出正偏差，表明在熔融加工期间共混物中存在协同作用。这证实了我们较早的发现，即混合物在整个组成范围内都是可混溶的。混合物流动的活化能始终高于根据加和规则计算的活化能。在研究的系统中，30:70 EMA-PDMS橡胶共混物的活化能相对较高，这证实了我们较早的发现：在此比例的共混物中，EMA和PDMS橡胶之间的反应程度明显更高。这证实了在整个组成范围内EMA和PDMS橡胶的混合物之间的混溶性。 （C）1995 John Wiley and Sons，Inc. [参考：19]

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