| 초록 |
It is well known that carbon fibers and phenol-formaldehyde resins are good precursors for activated carbons. Recently, the activated carbon composites (ACCs) has been manufactured by physical activation via a molding process with unwoven carbon fabrics and phenolic resin. In this work, ACCs are prepared using woven carbon fabrics and novolac-type phenolic resin by chemical activation with KOH as activating agent. The influence of KOH on the structural properties of the resulting carbons is investigated. The nitrogen adsorption data at a low relative pressure are applied to calculate the specific surface area using the BET's equation. The micropore volume is determined from the DR equation and the mean pore width is estimated using the DR characteristic energy. The understanding of the molecular and crystalline structure of the ACCs studied is carried out by X-ray diffraction measurement (XRD) and the morphologies of the resulting ACCs are observed by scanning electron microscope (SEM). |
