Skip to main content
SpringerLink
Log in

Pyrolysis kinetics and TG-FTIR analysis of waste epoxy printed circuit boards

  • Published:
Journal of Central South University Aims and scope Submit manuscript

Abstract

Thermal decomposition of waste epoxy PCBs was performed in different atmospheres (nitrogen, argon, air and vacuum) at a heating rate of 10 °C/min by DSC-TGA, and the pyrolysis characteristic was analyzed. The gases volatilized from the experiment were qualitatively analyzed by TG-FTIR. Kinetics study shows that pyrolysis reaction takes place between 300 and 400 °C, and the activation energies are 256, 212 and 186.2 kJ/mol in nitrogen, argon and vacuum, respectively. There are two mass-loss processes in the decomposition under air atmosphere. In the first mass-loss process, the decomposition is the main reaction, and in the second process, the oxidation is the main reaction. The activation energy of the second mass-loss process is 99.6 kJ/mol by isothermal heat-treatments. TG-FTIR analysis shows carbon dioxide, carbon monoxide, hydrogen bromide, phenol and substituent phenol are given off during the pyrolysis of waste epoxy PCBs.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. HUANG Kui, GUO Jie, XU Zhen-ming. Recycling of waste printed circuit boards: A review of current technologies and treatment status in China [J]. J Anal Appl Pyrol, 2009, 164(2/3): 399–408.

    Google Scholar 

  2. LADOU J. Printed circuit board industry [J]. Int J Hyg Environ Health, 2006, 209(3): 211–219.

    Article  Google Scholar 

  3. GUAN J, LI Y S, LU M X. Product characterization of waste printed circuit board by pyrolysis [J]. J Anal Appl Pyrol, 2008, 83(2): 185–189.

    Article  Google Scholar 

  4. MOLTO J, FONT R, GALVEZ A, CONESA J. Pyrolysis and combustion of electronic wastes [J]. J Anal Appl Pyrol, 2009, 84(1): 68–78.

    Article  Google Scholar 

  5. HALL W J, WILLIAMS P T. Separation and recovery of materials from scrap printed circuit boards [J]. Resour Conserv Recy, 2007, 51(3): 691–709.

    Article  Google Scholar 

  6. BALABANOVICH A L, LUDA M P, OPERTI L. GC/MS identification of pyrolysis products of fire-retardant brominated epoxy resin [J]. J Fire Sci, 2005, 23(3): 227–245.

    Article  Google Scholar 

  7. HALL W J, WILLIAMS P T. Pyrolysis of brominated feedstock plastic in a fluidized bed reactor [J]. J Anal Appl Pyrol, 2006, 77(1): 75–82.

    Article  Google Scholar 

  8. YOSHIKAGE O, ISAO H, KAZUHIRO M. Pyrolysis of the mixture of biomass and plastics in countercurrent flow reactor: Part I. Experimental analysis and modeling of kinetics [J]. Fuel, 2008, 87(13/14): 3105–3111.

    Google Scholar 

  9. CHIANG H L, LIN K H, LAI M H, CHEN T C, MA S Y. Pyrolysis characteristics of integrated circuit boards at various particle sizes and temperatures [J]. J Hazard Mater, 2007, 149(1): 151–159.

    Article  Google Scholar 

  10. HALL W, PAUL T. Removal of organobromine compounds from the pyrolysis oils of flame retarded plastics using zeolite catalysts [J]. J Anal Appl Pyrol, 2008, 81(2): 139–147.

    Article  Google Scholar 

  11. ZHOU L, WANG Y, HUANG Q, CAI J. Thermogravimetric characteristics and kinetic of plastic and biomass blends co-pyrolysis [J]. Fuel Process Technol, 2006, 87(11): 963–969.

    Article  Google Scholar 

  12. CHEN K S, CHEN H C, WU C H, CHOU Y M. Kinetics of thermal and oxidative decomposition of printed circuit boards [J]. J Environ Eng, 1999, 125(3): 277–283.

    Article  Google Scholar 

  13. ALTOE G F, FREITAS J C C, CUNHA A G, ERNMERICH F G, SMITH M E. Kinetics and C-13 NMR study of oxygen incorporation into PVC- and pitch-derived materials [J]. Energ Fuel, 2009, 23(3): 1373–1378.

    Article  Google Scholar 

  14. HA H, LEE T, LEE S, KIM D, JOO H. Oxidative stabilization mechanism of poly(vinyl chloride) pitch [J]. Polym Degrad Stabil, 2000, 68(2): 247–252.

    Article  Google Scholar 

  15. LUDA M P, BALABANOVICH A I, ZANETTI M, GUARATTO D. Thermal decomposition of fire retardant brominated epoxy resins cured with different nitrogen containing hardeners [J]. Polym Degrad Stabil, 2007, 92(6): 1088–1100.

    Article  Google Scholar 

  16. BUKHARKINA T V, DIGUROV N G. Kinetics of aerobic liquid-phase oxidation of organic compounds [J]. Org Process Res Dev, 2004, 8(3): 320–329.

    Article  Google Scholar 

  17. BHASKAR T, KANEKO J, MUTO A, SAKATA Y, JAKAB E, MATSUI T, UDDIN M A. Pyrolysis studies of PP/PE/PS/PVC/HIPS-Br plastics mixed with PET and dehalogenation (Br, Cl) of the liquid products [J]. J Anal Appl Pyrol, 2004, 72(1): 27–33.

    Article  Google Scholar 

  18. DUAN Ji-an, CAI Guo-hua, SHUAI Ci-jun. The relationship between IR characteristic peak and microstructure of the glass used as optical fiber [J]. J Cent South Univ Technol, 2006, 13(3): 238–241.

    Article  Google Scholar 

  19. ZHU H M, JIANG X G, YAN J H, CHI Y, CEN K F. TG-FTIR analysis of PVC thermal degradation and HCl removal [J]. J Anal Appl Pyrol, 2008, 82(1): 1–9.

    Article  Google Scholar 

  20. GRAUSE G, FURUSAWA M, OKUWAKI A, YOSHIOKA T. Pyrolysis of tetrabromobisphenol-A containing paper laminated printed circuit boards [J]. Chemosphere, 2008, 71(5): 872–878.

    Article  Google Scholar 

  21. CHIEN Y C, WANG H P, LIN K S, HUANG Y J, YANG Y W. Fate of bromine in pyrolysis of printed circuit board wasters [J]. Chemosphere, 2000, 40(4): 383–387.

    Article  Google Scholar 

  22. DE M I, CABALLERO B M, CHOMON M J, LARESGOITI M F, TORRES A, FERNANDEZ G, ARNAIZ S. Pyrolysis of electrical and electronic wastes [J]. J Anal Appl Pyrol, 2008, 82(2): 179–183.

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China

    Zhi-hua Zhan  (湛志华) & Ke-qiang Qiu  (丘克强)

Authors
  1. Zhi-hua Zhan  (湛志华)
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Ke-qiang Qiu  (丘克强)
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Ke-qiang Qiu  (丘克强).

Additional information

Foundation item: Project(2006AA06Z375) supported by the National High-tech Research and Development Program of China

Rights and permissions

Reprints and permissions

About this article

Cite this article

Zhan, Zh., Qiu, Kq. Pyrolysis kinetics and TG-FTIR analysis of waste epoxy printed circuit boards. J. Cent. South Univ. Technol. 18, 331–336 (2011). https://doi.org/10.1007/s11771-011-0700-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11771-011-0700-z

Key words

Search

Navigation