Recycling of flame retarded waste polystyrene foams (EPS and XPS) to PS granules free of hexabromocyclododecane (HBCDD)
Recycling of flame retarded waste polystyrene foams (EPS and XPS) to PS granules free of hexabromocyclododecane (HBCDD)
复制标题
将阻燃废聚苯乙烯泡沫（EPS 和 XPS）回收为不含六溴环十二烷 (HBCDD) 的 PS 颗粒
DOI：
10.4172/2475-7675.1000131
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Fabian Knappich
中科院分区：
文献类型：
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作者：
M. Schlummer;Andreas Mäurer;Swetlana Wagner;Arthur Berrang;T. Fell;Fabian Knappich
发泡和挤出聚苯乙烯(EPS和XPS)属于最常用的绝缘材料，就这一应用而言-这两种材料配备溴化阻燃剂六溴环十二烷(HBCDD)已有50多年的历史。在六溴联苯并二恶英被确定为高度关切的物质后，它被置于《斯德哥尔摩公约》和欧洲REACH立法的控制之下。因此，目前HBCDD在绝缘材料中的使用已被逐步淘汰，由配备HBCDD的EPS或XPS制成的废弃绝缘材料不能进一步进行最先进的机械回收。然而，由于大多数以前生产的配备聚四氟乙烯和聚四氟乙烯的聚四氟乙烯仍在用作绝缘材料，目前正在研究更复杂的回收方法。本研究研究了一种基于溶剂的回收工艺，该工艺将聚苯乙烯从绝缘废料中溶解出来，不仅消除了不溶的废料成分，还消除了共溶的六氯联苯二异氰酸酯。本研究考察了六溴环十二烷的脱除效率以及用该工艺生产的回收聚苯乙烯的力学性能。
Expanded and extruded polystyrene (EPS and XPS) belong to the most often used insulation materials and with respect to this application-both material have been equipped with the brominated flame retardant hexabromocyclododecane (HBCDD) for more than 50 years. After HBCDD had been identified as a substance of very high concern, it was set under control of the Stockholm Convention and the European Reach legislation. In consequence, the use of HBCDD in insulation materials is currently phased out and waste insulation material made of HBCDD equipped EPS or XPS cannot further be subjected to state-of-the art mechanical recycling. However, as the majority of the formerly produced HBCDD equipped EPS and XPS is still in use as insulation material, more sophisticated recycling approaches are currently investigated. This study investigates a solvent based recycling process, which dissolves polystyrene from insulation waste and eliminates not only insoluble waste components but also co-dissolved HBCDD. The study investigates the efficiency of HBCDD removal as well as mechanical properties of recycled PS produced by this process.