지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 동향자료
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 247 - 254 (8page)
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초록· 키워드
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In this work, thermal treatment accompanied with different acid treatments was applied to a commercial coal tar pitch (CTP) to obtain a spinnable precursor pitch for carbon fiber. In the case of thermal treatment only, a relatively high reaction temperature of between $380^{\circ}C$ and $400^{\circ}C$ was required to obtain a softening point (SP) range of $220^{\circ}C-260^{\circ}C$ and many meso-phase particles were created during the application of high reaction temperature. When nitric acid or sulfuric acid treatment was conducted before the thermal treatment, the precursor pitch with a proper SP range could be obtained at reaction temperatures of $280^{\circ}C-300^{\circ}C$, which were about $100^{\circ}C$ lower than those for the case of thermal treatment only. With the acid treatments, the yield and SP of the precursor pitch increased dramatically and the formation of meso-phase was suppressed due to the lower reaction temperatures. Since the precursor pitches with acid and thermal treatment were not spinnable due to the inhomogeneity of properties such as molecular weight distribution and viscosity, the CTP was mixed with ethanol before the consecutive nitric acid and thermal treatments. The precursor pitches with ethanol, nitric acid, and thermal treatments were easily spinnable, and their spinning and carbon fiber properties were compared to those of air blowing and thermal treated CTP.
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참고문헌 (21)
참고문헌 신청
Wazir AH / 2009 / Preparation and characterization of pitchbased carbon fibers / New Carbon Mater 24:83
Yu B / 2012 / Two-step chemical conversion of coal tar pitch to isotropic spinnable pitch / Fuel Process Technol 104:155
Yoon SH / 1994 / Assessment and optimization of the stabilization process of mesophase pitch fibers by thermal analyses / Carbon 32:281
Menéndez R / 1991 / The influence of primary quinoline insolubles on the development of secondary quinoline insolubles in coal tar pitches / Carbon 29:107
Petrova B / 2005 / Effect of different oxidation treatments on the chemical structure and properties of commercial coal tar pitch / Carbon 43:261
Yu B / 2012 / Two-step chemical conversion of coal tar pitch to isotropic spinnable pitch / Fuel Process Technol 104:155
Yoon SH / 1994 / Assessment and optimization of the stabilization process of mesophase pitch fibers by thermal analyses / Carbon 32:281
Menéndez R / 1991 / The influence of primary quinoline insolubles on the development of secondary quinoline insolubles in coal tar pitches / Carbon 29:107
Petrova B / 2005 / Effect of different oxidation treatments on the chemical structure and properties of commercial coal tar pitch / Carbon 43:261
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