Ground tire rubber/polyamide 6 thermoplastic elastomers produced by dry blending and compression molding

IF 1.1 4区材料科学 Q4 MATERIALS SCIENCE, COMPOSITES

Progress in Rubber Plastics and Recycling Technology Pub Date : 2021-08-13 DOI:10.1177/14777606211038956

Roberto C Vázquez Fletes, Erick O Cisneros López, Pedro Ortega Gudiño, E. Mendizábal, Rubén González Núñez, D. Rodrigue

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引用次数: 5

Abstract

This study investigates the addition of ground tire rubber (GTR) into virgin polyamide 6 (PA6) to produce thermoplastic elastomer (TPE) blends. In particular, a wide range of GTR concentration (0–100% wt.) was possible by using a simple dry blending technique of the materials in a powder form followed by compression molding. The molded samples were characterized in terms of morphological (scanning electron microscopy), physical (density and hardness) and mechanical (tension, flexion and impact) properties. The results showed a decrease in tensile and flexural moduli and strengths with GTR due to its elastomeric nature. However, significant increases were observed on the tensile elongation at break (up to 167%) and impact strength (up to 131%) compared to the neat PA6 matrix. Based on the results obtained, an optimum GTR content around 75% wt. was observed which represents a balance between high recycled rubber content and a sufficient amount of matrix to recover all the particles. These results represent a first step showing that a simple processing method can be used to produce low cost PA6/GTR compounds with a wide range of physical and mechanical properties.

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碾磨轮胎橡胶/聚酰胺6热塑性弹性体生产的干共混和压缩成型

本研究研究了在原聚酰胺6 (PA6)中添加磨碎轮胎橡胶(GTR)以生产热塑性弹性体(TPE)共混物。特别是，通过使用粉末形式的材料的简单干混合技术，然后进行压缩成型，可以实现大范围的GTR浓度(0-100% wt.)。通过形态学(扫描电镜)、物理(密度和硬度)和机械(拉伸、弯曲和冲击)性能对模制样品进行表征。结果表明，由于GTR的弹性体性质，它的拉伸和弯曲模量和强度都有所降低。然而，与纯PA6基体相比，断裂伸长率(高达167%)和冲击强度(高达131%)显著增加。根据所获得的结果，观察到最佳GTR含量约为75% wt.，这代表了高再生橡胶含量和足够数量的基质之间的平衡，以回收所有颗粒。这些结果表明，一种简单的加工方法可以用于生产具有广泛物理和机械性能的低成本PA6/GTR化合物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Rubber Plastics and Recycling Technology MATERIALS SCIENCE, COMPOSITES-POLYMER SCIENCE

CiteScore

4.40

自引率

7.70%

发文量

审稿时长

>12 weeks

期刊介绍： The journal aims to bridge the gap between research and development and the practical and commercial applications of polymers in a wide range of uses. Current developments and likely future trends are reviewed across key areas of the polymer industry, together with existing and potential opportunities for the innovative use of plastic and rubber products.