China Plastics ›› 2024, Vol. 38 ›› Issue (8): 53-61.DOI: 10.19491/j.issn.1001-9278.2024.08.009

• Materials and Properties • Previous Articles     Next Articles

Investigation on co⁃pyrolysis of polyester enamel wire and its pyrolysis product

ZHU Guangze1(), XIA Zhidong1(), ZHOU Wei1(), WANG Xiaolu1, WU Yufeng1,2, GUO Fu1,3   

  1. 1.Faculty of Materials and Manufacturing,Beijing University of Technology,Beijing 100124,China
    2.Institute of Circular Economy,Beijing University of Technology,Beijing 100124,China
    3.School of Mechanical Electrical Engineering,Beijing Information Science and Technology University,Beijing 100192,China
  • Received:2023-12-04 Online:2024-08-26 Published:2024-08-19

Abstract:

The pyrolysis products of the polyester enameled wire paint (coke) were separately co⁃pyrolyzed with the polyester enameled wire and the paint of the polyester enameled wire. And the co⁃pyrolysis behaviors were investigated by X⁃ray diffraction, morphology analysis, thermogravimetric analysis, Coats⁃Redfern integral method, infrared analysis and other methods. The results indicated that the obtained coke displayed a high degree of graphitization with folded micro⁃nano structure on its surface. Although the coke continued pyrolyzed, it increased the weight loss of the polyester enamel paint and reduced 16.9 % of pyrolysis activation energy when the coke co⁃pyrolyzed with the paint. In addition, the coke could lead to more oxygen⁃containing functional groups such as O—H and C=O and CO2 to escape during the pyrolysis of polyester paint film. This work demonstrated that the co⁃pyrolysis of coke and polyester enameled wire can further promote the pyrolysis of polyester enameled wire. It can not only contribute to reduce energy consumption, but also further promote the development of copper recovery from waste enameled wires by pyrolysis method.

Key words: polyester enameled wire, coke, pyrolysis kinetics, infrared analysis

CLC Number: