An environmentally benign process model development for printed circuit board recycling

Hong Chao Zhang, Xi Ouyang, Alex Abadi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations

Abstract

Delaminating and separation of obsolete Printed Circuit Board (PCB) is essential for its recycling. This paper presents an alternative environmentally benign process method for PCB recycling. Applying the solvent system, e.g. carbon dioxide and water under certain pressure and temperature, the PCB scraps could be delaminated easily. The separation of PCB into copper foil, glass fiber and polymer will be beneficial for further PCB recycling. The fundamental experiment mechanism is based on the polymer physics and polymerization. When the process temperature is raised above the polymer glass transition temperature Tg, polymer would be decomposed, which caused the main bonding force among PCB layers greatly reduced. Base on this principle several different processing circumstances were explored, including supercritical carbon dioxide; binary solvent system of CO 2 and H 2O; trinary solvent system of CO 2, H 2O and CH 3CH 2OH. The experiment facilities were set up and the input & output parameters were defined to evaluate the PCB delaminating result. Utility functions were developed to optimize the process conditions. The recommendations for future study are illustrated at the end of this paper.

Original languageEnglish
Title of host publicationProceedings of the 2006 IEEE International Symposium on Electronics and the Environment - Conference Record
Pages212-217
Number of pages6
DOIs
StatePublished - 2006
Event2006 IEEE International Symposium on Electronics and the Environment - Scottsdale, AZ, United States
Duration: May 8 2006May 11 2006

Publication series

NameIEEE International Symposium on Electronics and the Environment
Volume2006

Conference

Conference2006 IEEE International Symposium on Electronics and the Environment
CountryUnited States
CityScottsdale, AZ
Period05/8/0605/11/06

Keywords

  • Electronics
  • End of life
  • Printed circuit board
  • Recycling

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  • Cite this

    Zhang, H. C., Ouyang, X., & Abadi, A. (2006). An environmentally benign process model development for printed circuit board recycling. In Proceedings of the 2006 IEEE International Symposium on Electronics and the Environment - Conference Record (pp. 212-217). [1650063] (IEEE International Symposium on Electronics and the Environment; Vol. 2006). https://doi.org/10.1109/ISEE.2006.1650063