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Journal of the Korean Ceramic Society 1995;32(9): 989. |
탄소섬유 복합여과재의 제조 및 물성연구 |
이재춘, 신경숙, 이덕용, 김병균, 심선자, 임연수, 정윤중 |
명지대학교 무기재료공학과 |
A Study on the Preparation and Characterization of Carbon Fiber Composite Filter |
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ABSTRACT |
Rigid porous carbon fiber composites with the uniform pore size distribution were prepared by vacuum forming from water slurries containing carbonized PAN fibers, a phenolic resin and ceramic binders. The composites were designed to use for highly efficient carbon fiber filters for particulate filtration and gas adsorption. As the as-received carbon fibers of 1mm in length were milled to an approximate average length of 300${mu}{textrm}{m}$, modulus of rupture (MOR) of the composite filter was increased from 1MPa to the value larger than 5 MPa. Modulus of rupture (MOR) for the composite filter fabricated using the milled carbon fiber was increased from 5 MPa to 10 MPa as the carbonization temperature of the PAN fiber was raised from 90$0^{circ}C$ to 140$0^{circ}C$. The air permeability and an average pore size of the composite filter were increased from 40 to 270cc/min.$textrm{cm}^2$ and from 35 to 80${mu}{textrm}{m}$, respectively, as the apparent porosity increased from 80 to 95%. It was shown that the MOR of the carbon fiber composite filter was dependent primarily on the average length of carbon fiber, carbonization temperature and the type of bonding materials. |
Key words:
Carbon fiber, Composite filter, Vacuum forming, Carbonization |
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