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논문 기본 정보

자료유형
학술저널
저자정보
Park, Soo-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology) Seo, Min-Kang (Advanced Materials Division, Korea Research Institute of Chemical Technology) Lee, Jae-Rock (Advanced Materials Division, Korea Research Institute of Chemical Technology)
저널정보
한국탄소학회 Carbon science Carbon science 제2권 제3호
발행연도
2001.1
수록면
159 - 164 (6page)

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초록· 키워드

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In this study, the effects of carbon black (CB) content and anodic oxidation treatment with $AgNO_3$ on positive temperature coefficient (PTC) behavior of CB/HDPE nanocomposites were investigated. Also, the addition of elastomer as a toughing agent was studied. The 20~50 wt% of CB, 0~5 wtt% of elastomer, and 1 wt% of $AgNO_3$-filled HDPE nanocomposites were prepared using the internal mixer in 60 rpm at $160{\circ}C$ and the compression-molded at $180{\circ}C$ for 10 min. As a result, the room temperature resistivity and PTC intensity of the composites were dependent, to a large extent, on the content of CB, addition of elastomer, and surface chemical properties that were controlled in the relative arrangements of the carbon black aggregates in a polymeric matrix. Moreover, the composites with relatively low room temperature resistivity and suitable PTC intensity could be achieved by treatment of $AgNO_3$. Consequently, it was noted that PTC effect was due to the deagglomeration or the breakage of the conductive networks caused by thermal expansion or crystalline melting of the polymeric matrix.

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