• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Symposium on East Asian Resources Recycling Technology（EARTH 2005); 20051109-15; Beijing(CN) >Recycling of Wasted Multi-Layer Films Containing an Aluminum Layer
【24h】

Recycling of Wasted Multi-Layer Films Containing an Aluminum Layer

机译：回收含有铝层的多层废膜

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Multi-layer films can not be easily separated into their components because several thin films of different plastics are laminated together. For real "Recycling" of multi-layer films, they must be separated into their components. Generally in a scaled-up recycling process, separation a plastic from the other plastics is more difficult than from impurities, therefore, separation of each plastic is very important to achieve the real "Recycling". There have been many methods using density and spectroscopic difference for the separation of mixed plastics. All the present methods except selective dissolution process can not be applied to recycling of the multi-layer films. Multi-layer films usually contain low-density polyethylene(LDPE), polypropylene(PP), polyester(PET), and aluminum layers. Since multi-layer films usually contain an aluminum layer, the recycling process becomes more difficult. Aluminum can be selectively dissolved in alkaline aqueous solution, and LDPE and PP can be selectively dissolved in xylene at around 75℃ and 118℃, respectively. In this study, methods to separate each component plastic from multilayer film waste, one at a time, have been characterized in terms of yields, purity and speed.
机译：多层薄膜不易分离成组分，因为将不同塑料的几层薄膜层压在一起。对于真正的“回收”多层膜，必须将其分成各个组成部分。通常，在按比例放大的回收过程中，将一种塑料与其他塑料分离比从杂质中分离更为困难，因此，每种塑料的分离对于实现真正的“回收”非常重要。已经有许多利用密度和光谱差异来分离混合塑料的方法。除选择性溶解过程外，所有现有方法均不能用于多层膜的回收。多层膜通常包含低密度聚乙烯（LDPE），聚丙烯（PP），聚酯（PET）和铝层。由于多层膜通常包含铝层，因此回收过程变得更加困难。铝可以选择性地溶解在碱性水溶液中，而LDPE和PP可以分别选择性地溶解在75℃和118℃左右的二甲苯中。在这项研究中，已从收率，纯度和速度方面表征了一次将一种塑料与多层膜废料分离的方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号