中国塑料 ›› 2009, Vol. 23 ›› Issue (01): 95-98 .DOI: 10.19491/j.issn.1001-9278.2009.01.021

• 塑料与环境 • 上一篇    下一篇

废弃交联PE的力化学再生及其与PE-HD共混物性能的研究

李万庆,卢灿辉   

  1. 高分子材料工程国家重点实验室,四川大学高分子研究所,四川 成都 610065
  • 收稿日期:2008-10-07 修回日期:1900-01-01 出版日期:2009-01-26 发布日期:2009-01-26

Reclamation of Waste Cross-linked Polyethylene by Mechanochemical Milling and Properties of XLPE/PE-HD Blends

LI Wan-qing,LU Can-hui   

  1. State Key Lab of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China
  • Received:2008-10-07 Revised:1900-01-01 Online:2009-01-26 Published:2009-01-26
  • Contact: LU Can-hui

摘要: 采用固相力化学技术,实现了交联聚乙烯电缆料(XLPE)的力化学回收。结果表明:固相力化学方法是实现XLPE热塑性加工的有效手段,经力化学处理后,再生XLPE的拉伸强度为13.7 MPa,断裂伸长率为383 %。XLPE经力化学处理后表观黏度下降,加工流动性显著改善。将力化学处理的XLPE与高密度聚乙烯(PE-HD)共混,加工性能进一步得到改善,XLPE/PE-HD共混材料的拉伸强度和断裂伸长率分别达到18.5 MPa和500 %。XLPE/PE-HD共混物的SEM断面形貌分析表明,力化学处理可有效改善共混体系中XLPE和PE-HD的相容性。

关键词: 废弃交联聚乙烯, 回收, 力化学处理, 相容性

Abstract: In this paper, the recover of cross-linked polyethylene (XLPE) from waste insulation cable was conducted through mechanochemical technology. It showed that the mechanochemical treatment was an efficient way to realize thermoplastic processing of waste XLPE. The tensile strength and elongation at break of mechanochemically treated XLPE reached 13.7 MPa and 383%, respectively. The apparent viscosity of waste XLPE was gradually decreased with milling processing and the processability was remarkably improved after mechanochemical treatment. The tensile strength and elongation at break of XPLE/PE-HD blend achieved 18.5MPa and 500%, respectively. The incorporation of PE could further improve the processing property of XLPE. The SEM observation of fractured surface of XLPE/PE-HD blend illustrated that mechanochemical treatment was beneficial to the improvement of the compatibility XLPE and PE-HD.

Key words: waste cross-linked polyethylene, reclamation, mechanochemical treatment, compatibility