• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Efficient reclamation of carbon fibers from epoxy composite waste through catalytic pyrolysis in molten ZnCl2
【24h】

Efficient reclamation of carbon fibers from epoxy composite waste through catalytic pyrolysis in molten ZnCl2

机译：通过熔融ZnCl2催化热解催化热解催化热解碳纤维从环氧复合物废物中的高效回收

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

Carbon fiber-reinforced polymer composites have been widely used in various fields and have inevitably produced large amounts of composite waste. The recycling of carbon fibers with high value has become an active research topic at related institutions and production enterprises. In this paper, the catalytic pyrolysis of T700 carbon fiber/epoxy composites in molten salt was studied. Due to the efficient solubility of molten ZnCl2 for the epoxy matrix and catalytic fracture of the C-N bonds by the action of Zn2+ ions, the epoxy composites can be completely degraded at 360 degrees C in 80 min under standard pressure, and the reclamation efficiency was significantly enhanced compared with conventional pyrolysis reclamation without a catalyst. The types and contents of the main oxygen-containing functional groups on the surfaces of the fibers reclaimed with ZnCl2 were similar to those of the virgin fibers, and the graphitization structure of the carbon fibers was not destroyed in the pyrolysis process. The tensile strength of a monofilament of the fibers reclaimed with ZnCl2 was obviously higher than that of fibers reclaimed in air; it reached a high retention rate that was about 95% that of the virgin fibers. The fibers reclaimed with ZnCl2 after sizing exhibited a desirable reinforcing effect on the flexure performance and interlaminar shear strength of unidirectional carbon fiber/epoxy composites which was close to the performance levels of composite samples containing commercial T700 carbon fibers. Therefore, efficient technology to reclaim high-quality carbon fibers from epoxy matrices has been devised.
机译：碳纤维增强的聚合物复合材料已广泛用于各个领域，并且不可避免地生产大量的复合废物。具有高价值的碳纤维的再循环已成为相关机构和生产企业的积极研究主题。本文研究了熔盐中T700碳纤维/环氧复合材料的催化热解。由于熔融ZnCl2对环氧基质和CN键的催化断裂通过Zn2 +离子的作用，环氧复合材料在标准压力下80分钟的80分钟可以在360℃下完全降解，并且填海效率显着下降与常规热解填充的不含催化剂相比，增强。用ZnCl2回收的纤维表面上的含有主要氧的官能团的类型和含量与原始纤维的纤维的类型类似，并且在热解过程中不会破坏碳纤维的石墨化结构。用ZnCl2回收的纤维单丝的拉伸强度明显高于空气中回收的纤维;它达到了高保留率，约为55％的原始纤维。用ZnCl2回收的纤维在施胶之后表现出对单向碳纤维/环氧复合材料的挠性性能和斜面剪切强度的理想增强作用，其接近含有商业T700碳纤维的复合样品的性能水平。因此，设计了高效的技术来回收来自环氧基质的高质量碳纤维。

著录项

  • 来源
    《RSC Advances》 |2019年第1期|共12页
  • 作者

    Wu Tianyu; Zhang Wenqing; Jin Xin; Liang Xiangyi; Sui Gang; Yang Xiaoping;

  • 作者单位

    Beijing Univ Chem Technol State Key Lab Organ Inorgan Composites Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol State Key Lab Organ Inorgan Composites Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol State Key Lab Organ Inorgan Composites Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol State Key Lab Organ Inorgan Composites Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol State Key Lab Organ Inorgan Composites Beijing 100029 Peoples R China;

    Beijing Univ Chem Technol State Key Lab Organ Inorgan Composites Beijing 100029 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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