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首页> 外文期刊>Journal of Applied Polymer Science >Effect of butyl rubber type on properties of polyamide and butyl rubber blends
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Effect of butyl rubber type on properties of polyamide and butyl rubber blends

机译：丁基橡胶类型对聚酰胺和丁基橡胶共混物性能的影响

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Polyamide-12 was blended with butyl rubber, bromobutyl rubber, and chlorobutyl rubber with and without a sulfur curing system. Mechanical properties for dynamically vulcanized blends generally exceed those made with no vulcanization. Chlorobutyl-containing blends prepared by dynamic vulcanization have higher tensile strength and elongation at break values in comparison to those made from other butyl rubbers. For a variety of polyamide /rubber blends made by dynamic vulcanization, there is very little effect of rubber percentage unsaturation and Mooney viscosity on the mechanical properties of the blends. In chlorobutyl-containing blends prepared by dynamic vulcanization, the swelling index values attributed to the rubber portion decrease as rubber content decreases, and it is likely that the polyamide phase completely surrounds the rubber particles at compositions exceeding approximately 25% polyamide. Swelling index results can be correlated with elongation at break values for similar blends. The results of differential scanning calorimetry suggest that the polyamide phase is not a neutral component in high shear mixing with butyl rubbers with or without curing agents. Rheological studies indicate strong non-Newtonian behavior for all blends of polyamide-12 with butyl rubbers. Scanning electron microscopy on polyamide-12/butyl rubber blends indicates compatibility for butyl rubbers in the order of chlorobutyl > bromobutyl > butyl rubber. (C) 2004 Wiley Periodicals, Inc.
机译：在有和没有硫磺硫化体系的情况下，将聚酰胺-12与丁基橡胶，溴化丁基橡胶和氯丁基橡胶混合。动态硫化共混物的机械性能通常超过未硫化的机械性能。通过动态硫化制得的含氯丁基共混物，与其他丁基橡胶相比，具有更高的拉伸强度和断裂伸长率。对于通过动态硫化制备的各种聚酰胺/橡胶共混物，橡胶百分率不饱和度和门尼粘度对共混物机械性能的影响很小。在通过动态硫化制备的含氯丁基的共混物中，归因于橡胶部分的溶胀指数值随着橡胶含量的减少而降低，并且当聚酰胺的组成超过约25％时，聚酰胺相可能完全包围橡胶颗粒。膨胀指数结果可以与类似共混物的断裂伸长率值相关。差示扫描量热法的结果表明，在与具有或不具有固化剂的丁基橡胶的高剪切混合中，聚酰胺相不是中性组分。流变学研究表明，聚酰胺12与丁基橡胶的所有混合物均具有很强的非牛顿性。聚酰胺12 /丁基橡胶混合物的扫描电子显微镜观察结果表明，其与丁基橡胶的相容性顺序为氯丁基>溴丁基>丁基橡胶。 （C）2004年Wiley Periodicals，Inc.

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