간행물
Carbon Letters KCI 등재 Carbon letters
- 발행기관 한국탄소학회
- 자료유형 학술지
- 간기 격월간
- ISSN 1976-4251 (Print)2233-4998 (Online)
- 수록기간 2000 ~ 2024
- 주제분류 자연과학 > 자연과학일반 자연과학 분류의 다른 간행물
- 십진분류KDC 530DDC 620
권호리스트/논문검색
Vol.3 No.3 (2002년 9월) 6건
1.
2002.09
구독 인증기관 무료, 개인회원 유료
Unidirectional polymer composites were prepared using high-strength carbon fibers as reinforcement and phenolic resin as matrix precursor with keeping fiber volume fraction at 30, 40, 50 and 60% respectively. These composites were carbonized at 1000℃ and graphitised at 2600℃ in the inert atmosphere. The carbonized and graphitised composites were characterized for mechanical properties as well as microstructure. Microscopic studies were carried out of the polished surface of carbonized and graphitised composites after etching by chromic acid, to understand the effect of fiber volume fraction on oxidation at fiber-matrix interface. It is found that the flexural strength in polymer composites increases with fiber volume fraction and so does for the carbonised composites. However, the trend was found to be reversed in graphitised composites. In all the carbonized composites anisotropic region has been observed at fiber-matrix interface which transforms into columnar type microstructure upon graphitisation. The extension of strong and weak columnar type microstructure is function of fiber volume fraction. SEM microscopy of the etched surface of the sample reveal that composites containing 40% fiber volume has minimum oxidation at the interface, revealing a strong interfacial bonding.
4,000원
2.
2002.09
구독 인증기관 무료, 개인회원 유료
It is well known that the porosity and adsorption capacity in a carbon depends on the nature of precursor, pyrolysis and activation conditions and the ash content. The studies on carbon prepared from the dry and wet babbool wood were under taken to ascertain the effect of initial state of precursor on the development of porosity in the resulting activated carbon. The characterization and adsorption studies carried out shows the presence of mainly mesoporosity in the carbon prepared from dry wood while more of microporosity was observed in the activated carbon prepared from wet wood. The results on porosity in both the cases have been compared and correlated with their processing conditions.
4,000원
3.
2002.09
구독 인증기관 무료, 개인회원 유료
Multiwall carbon nanotubes (MWNT) were produced using the arc-discharge graphite evaporation technique. Composite films were developed using MWNT dispersed in polystirol polymer. In the present work, various properties of the polymeric thin film containing carbon nanotubes were investigated by optical absorption, electrical resistivity and the same have been discussed.
3,000원
4.
2002.09
구독 인증기관 무료, 개인회원 유료
Activated carbon fibers were prepared from the petroleum isotropic pitch and organometallic compounds. The metals were dispersed uniformly in the ACFs. The specific surface area and pore size distributions of metal containing ACFs were measured. The mesopores of ACFs were developed by Co, Ni, and Mn metals addition, and the catalytic reactivity of ACFs' SOx removal was increased by adding Ni and Pd metals. It was found that the mesopores did not work forthe improvement of catalytic reactivity of ACFs' SOx removal with the blank experiment using the metal removed ACFs.
4,000원
5.
2002.09
구독 인증기관 무료, 개인회원 유료
3,000원
6.
2002.09
구독 인증기관 무료, 개인회원 유료
4,000원
