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Pyrolysis Characteristics of CCL(Copper Clad Laminate) Based Paper/Phenolic Resin Composites  

Song, Jae-Hun (Department of Environment Sciences & Biotechnology, Hallym University)
Kim, Seung-Do (Department of Environment Sciences & Biotechnology, Hallym University)
Ahn, Hyun-Cheol (Institute for advanced engineering clean energy team)
Kim, Gyung-Soo (Korea institute of industrial technology Green Chemistry Team)
Kim, Sang-Bum (Korea institute of industrial technology Green Chemistry Team)
Jung, Jae-Sung (Department of Chemical Engineering, Hanyang University)
Gong, Sung-Ho (Department of Chemical Engineering, Hanyang University)
Cho, Young-Gae (Golden Universal Co., LTD.)
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Abstract
Electronic wastes have increased tremendously. However, any reliable treatment methodologies have rarely been established. Electronic wastes have posed serious disposal problem due to their physico-chemical stability. This paper investigated the application possibility of pyrolysis for the purpose of recycling the p-CCL(phenol based Copper Clad Laminate). Thermogravimetric analysis(TGA) was used to investigate the thermal decomposition pattern of p-CCL. We elucidated the characteristics of pyrolysis by-products at operating temperatures of 280, 350 and $600^{\circ}C$. GC/MS and FT-IR were used to characterize the liquid by-products along with general characterization methods such as Ultimate Analysis, Proximate Analysis and Heating Value, whereas general characterization methods were only introduced for the solid by-products. At a heating rate of $5^{\circ}C$/min, TGA curves exhibited three decomposition stages: (1) low-temperature decomposition region$(<280^{\circ}C)$, (2) medium temperature region$(280\sim350^{\circ}C)$ and (3) high-temperature region$(>350^{\circ}C)$. The major compounds of liquid by-products at low- and medium-temperatures were accounted for by water and phenol, whereas branched phenols and furans were major compounds at high-temperatures. As the temperature increases, volatile quantities decreased but the fixed carbon increased. High heating values of solid by-products($7,400\sim7,600$ kcal/kg) would suggest that the solid by-products could be applicable as fuel. In addition, high fixed carbon but low ash content of the solid by-products offered an implication that they are capable of being upgradable for adsorbent after applying appropriate activating process.
Keywords
Electronic Wastes; Phenol CCL; Chemical Recycling; Pyrolysis Characteristics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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