Abstract

An approach is outlined to develop procedures to process composite materials based on recycled polyolefins and other plastics obtained from sorted solid communal waste into molded products using injection molding. New temperature and concentration regimes are suggested for injection molding of polymeric mixtures containing recycled polymers and styrene and polyolefin thermoelastoplasts. Samples of molded products having different compositions obtained from polymeric mixtures. Preliminary components (recycled polypropylene and low-density polyethylene) and polymeric mixtures containing these components are studied using physical and chemical methods (Fourier IR spectroscopy, thermogravimetric analysis, and differential scanning calorimetry). The comprehensive study confirms that modifying recycled polypropylene with a styrene–ethylene–butylene–styrene copolymer and by ethylene–octene copolymer plasticized thermoplasts reduces the degree of crystallinity, resulting in better compatibility of polymers, which allows introducing dyes as dispersed fillers.

中文翻译：

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热塑性弹性体改性的分级回收聚合物：用于注塑成型的复合材料

摘要

概述了一种方法来开发基于回收的聚烯烃和其他塑料的复合材料，该复合材料从分类的固体公共废物中获得，使用注塑成型为模制产品。建议使用新的温度和浓度方案来注塑包含回收聚合物和苯乙烯和聚烯烃热弹性体的聚合物混合物。从聚合物混合物中获得的具有不同组成的模塑产品样品。使用物理和化学方法（傅立叶红外光谱、热重分析和差示扫描量热法）研究初级组分（再生聚丙烯和低密度聚乙烯）和包含这些组分的聚合物混合物。