Hirayama Denise, Saron Clodoaldo
Department of Materials Engineering, University of São Paulo, Lorena, Brazil.
Department of Materials Engineering, University of São Paulo, Lorena, Brazil
Waste Manag Res. 2015 Jun;33(6):543-9. doi: 10.1177/0734242X15584845. Epub 2015 May 28.
Polymeric materials constitute a considerable fraction of waste computer equipment and polymers acrylonitrile-butadiene-styrene and high-impact polystyrene are the main thermoplastic polymeric components found in waste computer equipment. Identification, separation and characterisation of additives present in acrylonitrile-butadiene-styrene and high-impact polystyrene are fundamental procedures to mechanical recycling of these polymers. The aim of this study was to evaluate the methods for identification of acrylonitrile-butadiene-styrene and high-impact polystyrene from waste computer equipment in Brazil, as well as their potential for mechanical recycling. The imprecise utilisation of symbols for identification of the polymers and the presence of additives containing toxic elements in determinate computer devices are some of the difficulties found for recycling of acrylonitrile-butadiene-styrene and high-impact polystyrene from waste computer equipment. However, the considerable performance of mechanical properties of the recycled acrylonitrile-butadiene-styrene and high-impact polystyrene when compared with the virgin materials confirms the potential for mechanical recycling of these polymers.
聚合材料在废弃计算机设备中占相当大的比例，丙烯腈-丁二烯-苯乙烯共聚物（ABS）和高抗冲聚苯乙烯（HIPS）是废弃计算机设备中主要的热塑性聚合物成分。识别、分离和表征ABS和HIPS中存在的添加剂是这些聚合物机械回收的基本步骤。本研究的目的是评估巴西从废弃计算机设备中识别ABS和HIPS的方法，以及它们的机械回收潜力。聚合物识别符号使用不精确以及某些计算机设备中存在含毒元素的添加剂是从废弃计算机设备中回收ABS和HIPS时遇到的一些困难。然而，与原始材料相比，回收的ABS和HIPS的机械性能表现相当，这证实了这些聚合物进行机械回收的潜力。
