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首页> 外文期刊>Journal of Applied Polymer Science >Failure properties of thermoplastic elastomers from polyethyleneitrile rubber blends: Effect of blend ratio, dynamic vulcanization, and filler incorporation
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Failure properties of thermoplastic elastomers from polyethyleneitrile rubber blends: Effect of blend ratio, dynamic vulcanization, and filler incorporation

机译：聚乙烯/丁腈橡胶混合物的热塑性弹性体的失效特性：混合物比例，动态硫化和填料掺入的影响

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摘要

Thermoplastic elastomers from blends of high-density polyethylene and acrylonitrile butadiene rubber were prepared by a melt-blending technique. The blends were dynamically vulcanized using sulfur, peroxide, and mixed curing systems. The peroxide concentration was varied to obtain samples of varying degrees of crosslinking. The peroxide system showed better mechanical properties. The crosslink density determination by the equilibrium swelling method revealed that the enhancement in properties can be correlated to the extent of crosslinking. It is observed that the effect of dynamic vulcanization on the property improvement is much more pronounced in rubber-rich blends. To study the effect of filler incorporation on mechanical properties, fillers such as carbon black, silica, silane-treated silica, and cork-filled samples were prepared. All filled systems, except cork filled, exhibited superior mechanical properties. Scanning electron micrographs of selected fractured Surfaces were analyzed to study the failure mechanism of the different compositions. Various theoretical models were applied to correlate the observed mechanical behavior with that of theoretically predicted values. (c) 2006 Wiley Periodicals, Inc.
机译：通过熔融共混技术，由高密度聚乙烯和丙烯腈丁二烯橡胶的混合物制备热塑性弹性体。使用硫，过氧化物和混合固化系统对混合物进行动态硫化。改变过氧化物的浓度以获得不同交联度的样品。过氧化物体系显示出更好的机械性能。通过平衡溶胀法确定的交联密度表明，性能的增强可与交联程度相关。可以观察到，在富含橡胶的混合物中，动态硫化对性能改善的影响更为明显。为了研究填料掺入对机械性能的影响，制备了填料，如炭黑，二氧化硅，硅烷处理的二氧化硅和软木填充的样品。除软木塞填充之外，所有填充系统均显示出优异的机械性能。分析了选定断裂表面的扫描电子显微照片，以研究不同成分的破坏机理。应用了各种理论模型来将观察到的机械行为与理论预测值相关联。 （c）2006年Wiley Periodicals，Inc.

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