中国塑料 ›› 2011, Vol. 25 ›› Issue (10): 81-85 .DOI: 10.19491/j.issn.1001-9278.2011.10.017

• 塑料与环境 • 上一篇    下一篇

回收高密度聚乙烯结构与性能的研究

袁聪慧 王仕峰 张勇 张隐西   

  1. 上海交通大学高分子材料研究所 上海交通大学高分子材料研究所 上海交通大学高分子研究所 上海交通大学高分子研究所
  • 收稿日期:2011-06-17 修回日期:1900-01-01 出版日期:2011-10-26 发布日期:2011-10-26

Study on Structure and Properties of Recycled High Density Polyethylene

YUAN Conghui WANG Shifeng ZHANG Yong ZHANG Yinxi   

  • Received:2011-06-17 Revised:1900-01-01 Online:2011-10-26 Published:2011-10-26
  • Contact: YUAN Conghui

摘要: 采用傅里叶变换红外光谱仪、差示扫描量热仪和热重分析仪分析了市售回收高密度聚乙烯(PE-HD)的结构特点,并对其熔体流动性和力学性能进行了研究。结果表明,在回收再利用过程中,PE-HD的结构发生了明显的变化,产生了羰基,其老化程度越大,产生的杂峰越多。回收PE-HD的熔融流动性较差,力学性能也有不同程度的下降。根据拉伸强度的大小,回收PE-HD可分为一级料、二级料和三级料。

关键词: 回收, 高密度聚乙烯, 性能, 老化, 结构

Abstract: Commercial recycled high density polyethylene (PE-HD) was characterized using Fourier transform infrared spectrometry, differential scanning calorimetry and thermogravimetric analysis, and their rheological and mechanical properties were also studied. During the recycling processing, the structure of recycled PE-HD changed obviously. Carbonyl groups on the chains increased, the melt flow rate and mechanical properties decreased as a result of aging. According to tensile strength, recycled PE-HD could be divided into three grades.

Key words: recycling, high density polyehylene, property, aging., structure

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