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首页> 外文期刊>Journal of Applied Polymer Science >Partial replacement of EPR by GTR in highly flowable PP/EPR blends: Effects on morphology and mechanical properties
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Partial replacement of EPR by GTR in highly flowable PP/EPR blends: Effects on morphology and mechanical properties

机译：高流动性PP / EPR共混物中GTR替代EPR：对形态和机械性能的影响

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This research analyzes the effect of ground tire rubber (GTR) and a novel metallocene-based ethylene-propylene copolymer (EPR), with high propylene content, on the morphology and mechanical behavior of ternary polymer blends based on a highly flowable polypropylene homopolymer (PP). The PP/EPR blends morphology, with very small domains of EPR dispersed in the PP matrix, indicates a good compatibility among these materials, which leads to a significant improvement on elongation at break and impact strength. The incorporation of EPR on the rubber phase of thermoplastic elastomeric blends (TPE) based on GTR and PP (TPEGTR) has a positive effect on their mechanical performance, attributed to the toughness enhancement of the PP matrix and to the establishment of shell-core morphology between the rubber phases. The mechanical properties of the ternary blends reveal that TPEGTR blends allow the upcycling of this GTR material by injection molding technologies. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42011.
机译：这项研究分析了地面轮胎橡胶（GTR）和新型的茂金属基丙烯-丙烯-丙烯共聚物（EPR）对基于高流动性聚丙烯均聚物（PP）的三元聚合物共混物的形态和力学行为的影响）。 PP / EPR共混物的形态，极小的EPR域分散在PP基体中，表明这些材料之间具有良好的相容性，从而导致断裂伸长率和冲击强度得到显着改善。在基于GTR和PP（TPEGTR）的热塑性弹性体共混物（TPE）的橡胶相中加入EPR对其机械性能产生积极影响，这归因于PP基体的韧性增强和壳核形态的建立在橡胶相之间。三元共混物的机械性能表明，TPEGTR共混物可通过注塑技术使该GTR材料向上循环。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42011。

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