MECHANOCHEMICAL RECYCLING AND PROCESSING OF WASTE CROSSLINKED POLYMERS: WASTE TIRE RUBBER AND WASTE XLPE FROM CABLE SCRAPS
The accumulation and disposal of polymer wastes including waste plastics, waste rubber, waste synthetic fibers and waste composites is a worldwide concern. Until now, there are many technical barriers in recycling polymer wastes with crosslinked structure, such as vulcanized rubber, crosslinked polyolefine and other thermoset materials. In this study, a mechanochemical approach was used to conduct the devulcanization of waste tire rubbers (WTR) and de-crosslinking of waste crosslinked polyethylene (XLPE) from cable scraps, for turning WTR and waste XLPE to re-formable materials. The stress-induced mechanochemical devulcanization of waste tire rubber and decrosslinking of XLPE at ambient temperature can be achieved through self-designed solid-state mechanochemical reactor. Several high-valued composites, such as natural rubber/WTR, nitrile rubber/WTR, HDPE/XLPE, thermoplastic vulcanizates (TPVs) from partly de-crosslinked XLPE scrap and partly devulcanisized WTR, with improved mechanical properites were obtained through mechanochemical processing. The objective of the present research is to develop a feasible technique for reusing unsegregated waste crosslinked polymer materials.
Canhui Lu Xinxing Zhang Mei Liang
State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute, Sichuan University, Chengdu 610065,China
国际会议
成都
英文
148-155
2009-10-11（万方平台首次上网日期，不代表论文的发表时间）