Preparation and thermal properties of polyethylene-based carbonized fibers

김관우; Lee hye-min; Kim Byoung-Suhk; 황선환; Kwac  Lee-Ku; An  Kay-Hyeok; Byung-Joo KIM

Carbon Letters

Abbr : Carbon Lett.
2015, 16(1), pp.62-66
Publisher : Korean Carbon Society
Research Area : Other Natural Sciences General

김관우 ¹, Lee hye-min ², Kim Byoung-Suhk ³, 황선환 ⁴, Kwac Lee-Ku ⁵, An Kay-Hyeok ⁶, Byung-Joo KIM ⁷

¹(재) 한국탄소융합기술원
²(재) 한국탄소융합기술원
³전북대학교
⁴LG chemical
⁵전주대학교
⁶(재) 한국탄소융합기술원
⁷(재) 한국탄소융합기술원

ABSTRACT

In this study, carbonized fibers were prepared by using acidically cross-linked LDPE fibers. The surface morphologies of the carbonized fibers were observed by SEM. The effects of cross-linking process temperatures were studied using thermal analyses such as DSC and TGA. The melting and heating enthalpy of the fibers decreased as the cross-linking temperature increased. The cross-linked fibers had a carbonization yield of over 50%. From SEM results the highest yield of carbonized LDPE-based fibers was obtained by cross-linking at a sulfate temperature (170oC). As a result, carbonation yield of the carbonized fibers was found to depend on the functions of the cross-linking ratio of the LDPE precursors.
KEYWORDS

carbon fiber, sulfuric acid, cross-linking, polyolefin, carbon fiber precursor
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