Recycling of flame retardant polymers:Current technologies and future perspectives  

作　　者：Aurelio Bifulco Jiuke Chen Arvindh Sekar Wenyu Wu Klingler Ali Gooneie Sabyasachi Gaan 

机构地区：[1]Department of Chemical Materials and Industrial Production Engineering(DICMaPI),University of Naples Federico II,Piazzale V.Tecchio 80,80125,Naples,Italy [2]Laboratory for Advanced Fibers,Empa Swiss Federal Laboratories for Materials Science and Technology,Lerchenfeldstrasse 5,9014,St.Gallen,Switzerland [3]Department of Materials,ETH Zurich,8092 Zurich,Switzerland [4]Circular Plastics,Department of Circular Chemical Engineering,Faculty of Science and Engineering,Maastricht University,Urmonderbaan 22,6162 AL Geleen,the Netherlands

出　　处：《Journal of Materials Science & Technology》2024年第32期156-183,共28页材料科学技术(英文版)

基　　金：the Italian Ministry of Ed-ucation and Research,PON R&I 2014-2020-Asse IV“Istruzione e ricerca per il recupero-REACT-EU”-Azione IV.6-“Contratti di ricerca su tematiche Green”,for the financial support concerning his employment contract;The work was partially supported by funds from the Zuercher Stiftung fuer Textilforshung(Winterthur,Switzerland).

摘　　要：Polymers are indispensable to humans in different applications due to their ease of manufacturing and overall performance.However,after a material lifetime,there is a large amount of polymer-based waste,which greatly contributes to the loss of valuable resources and environmental pollution.Thermoplastics may be readily recycled,but because of their flammability,large amounts of flame retardant(FR)ad-ditives are required for many applications.This results in a significant volume of FR polymeric wastes too,particularly halogenated plastics,which are subject to severe recycling regulations.In general,ther-moplastics containing FRs are raising concerns,as their effective recycling is strongly influenced by the chemical composition,additive content,and physicochemical characteristics of the waste stream.The recycling of FR thermosets is even more challenging due to their crosslinked and cured nature,which makes them resistant to melting and reprocessing.In many cases,traditional mechanical recycling meth-ods,such as grinding and melting,are not applicable to thermosetting polymers.Current recycling meth-ods do not always consider the recovery of the thermosetting/thermoplastic matrix and the presence of toxic FRs in the polymer network.Sorting and solvent washing treatment are important steps,which are usually performed before recycling the FR polymeric waste to reduce contamination in the following steps.

关 键 词：THERMOSETS Thermoplastics Flame retardant RECYCLING Covalent adaptable networks SUSTAINABILITY 

分 类 号：O63[理学—高分子化学]