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TGA에서의 반응속도 연구에 관한 소고 : 석탄, 타이어, 플라스틱 열분해 결과의 비교

Comments on the Kinetic Study with Thermogravimetric Analyzer : Case Study of Coal, Tire and Plastic Pyrolyses

김영성

Ghim YS

HWAHAK KONGHAK, December 1991, 29(6), 752-756(5), NONE

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Abstract

TGA 결과가 Arrhenius 형태의 속도식에 얼마나 근접하는가를 알 수 있는 방법을 제시하고, 이를 가열시연화되거나 팽창되지 않는 갈탄과, 용융과 팽창이 심한 열가소성수지, 그리고 타이어의 열분해 결과에 각기적용시켜 보았다. 갈탄의 열분해는 Arrhenius 형태의 속도식에 비교적 근사하게 접근하였던 반면 PS등 열가소성 플라스틱의 열분해는 Arrhenius 형태의 속도식과 큰 차이를 보였다. 타이어의 열분해는 구성의 특성상 갈탄과 플라스틱 열분해의 중간 경향을 나타내었는데 역시 Arrhenius 형태의 속도식으로 충분히 해석되기는 어려운 정도였다.

A method to know how much the thermogravimetric data are close to the Arrhenius-type rate equation was suggested. By using this method, pyrolysis of lignite that did not soften or swell with increasing temperature was proved to be well explained with the Arrhenius-type rate equation. On the other hand, pyrolyses of thermoplastics such as PS were far from the Arrhenius-type rate equation due to the significant melting and swelling with increasing temperature. Pyrolytic propensity of tire chips was between those of lignite and thermoplastics but was still distant from that expected by the Arrhenius-type rate equation.

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References

Wendlandt WW, "Thermal Methods of Analysis," 2nd Edn., Wiley, New York, NY (1974)
Ghim YS, HWAHAK KONGHAK, 29(4), 503 (1991)
손재익, "파키스탄 석탄의 이용기술 연구 (I)," 한국동력자원연구소 연구보고서, 과학기술처 (1987)
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