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首页> 外文期刊>Journal of Applied Polymer Science >MORPHOLOGY AND MECHANICAL PROPERTIES OF THERMOPLASTIC ELASTOMERS FROM NYLON-NITRILE RUBBER BLENDS
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MORPHOLOGY AND MECHANICAL PROPERTIES OF THERMOPLASTIC ELASTOMERS FROM NYLON-NITRILE RUBBER BLENDS

机译：尼龙-腈橡胶共混物的热塑性弹性体的形貌和力学性能

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Nylon-nitrile rubber blends having different plastic-rubber component ratios (100/0, 80/20, 70/30, 60/40, 50/50, 40/60, 30/70, 20/80, and 0/100) were prepared by melt mixing technique in a Rheocord-90 at a temperature set at 180 degrees C. The mixing characteristics of the blends have been analyzed from the rheographs. The morphology of the blend was studied using optical and electron microscopies, with special reference to the effect of blend ratio. The micrographs indicate a two-phase system where the component having lower proportions was found to disperse in the major continuous phase. A cocontinuous morphology was observed for 50/50 composition. Mechanical properties of the blends have been measured according to standard test methods. The effect of blend ratio on the mechanical properties like tensile strength, tear strength, elongation at break, stress-strain behavior, and hardness has been analyzed. The influence of the strain rate on the mechanical properties has also been analyzed. The mechanical properties were found to have a strong dependence on the amount of nylon in the blend. It is found that the blends with higher proportions of nylon have superior mechanical properties. The observed changes in mechanical properties are explained on the basis of the morphology of the blend. Various theoretical models such as Series, Parallel, Halpin-Tsai, and Coran's equations have been used to fit the experimental mechanical data. (C) 1996 John Wiley & Sons, Inc. [References: 53]
机译：具有不同塑料橡胶组分比率（100 / 0、80 / 20、70 / 30、60 / 40、50 / 50、40 / 60、30 / 70、20 / 80和0/100）的尼龙-丁腈橡胶混合物通过在Rheocord-90中在设定为180℃的温度下通过熔融混合技术制备混合物。已经从流变仪分析了混合物的混合特性。使用光学和电子显微镜研究掺混物的形态，特别注意掺混比的影响。显微照片指示两相系统，其中发现具有较低比例的组分分散在主要连续相中。对于50/50组成观察到共连续形态。共混物的机械性能已根据标准测试方法进行了测量。分析了混合比对机械性能如拉伸强度，撕裂强度，断裂伸长率，应力应变行为和硬度的影响。还分析了应变速率对机械性能的影响。发现机械性能强烈依赖于共混物中尼龙的量。发现具有较高比例的尼龙的共混物具有优异的机械性能。根据共混物的形态解释了观察到的机械性能变化。各种理论模型（例如串联，平行，Halpin-Tsai和Coran方程）已用于拟合实验力学数据。 （C）1996 John Wiley＆Sons，Inc. [参考：53]

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