Carbon fibers (CFs) are considered promising composite materials for various applications. However, the high cost of CFs (as much as $26 per kg) limits their practical use in the automobile and energy industries. In this study, we developed a continuous stabilization process for manufacturing low-cost CFs. We employed a textile-grade polyacrylonitrile (PAN) fiber as a low-cost precursor and UV irradiation technique to shorten the thermal stabilization time. We confirmed that UV irradiation on the textile-grade PAN fibers could lower the initial thermal stabilization temperature and also lead to a higher reaction. These resulted in a shorter overall stabilization time and enhancement of the tensile properties of textilegrade PAN-based CFs. Our study found that only 70 min of stabilization time with UV irradiation was required to prepare textile-grade PAN-based low-cost CFs with a tensile strength of 2.37 ± 0.22GPa and tensile modulus of 249 ± 5 GPa.

Abstract
1. 서 론
2. 실험 방법
    2.1 물질
    2.2 PAN의 UV 조사
    2.3 PAN 열적 안정화 과정 및 탄소화 과정
    2.4 특성 분석
3. 결과 및 고찰
4. 결 론
감사의 글
References

• 문준하(경상국립대학교 화학과) | Joon Ha Moon (Department of Chemistry, Gyeongsang National University, Jinju 52828, Republic of Korea)
• 성홍규(경상국립대학교 화학과) | Honggyu Seong (Department of Chemistry, Gyeongsang National University, Jinju 52828, Republic of Korea)
• 유지선(한국과학기술연구원 탄소융합소재센터) | Jiseon Yoo (Carbon composite Materials Research Center, Korea Institute of Science and Technology (KIST), Wanju 55324, Republic of Korea)
• 조세연(한국과학기술연구원 탄소융합소재센터) | Se Youn Cho (Carbon composite Materials Research Center, Korea Institute of Science and Technology (KIST), Wanju 55324, Republic of Korea) Corresponding author
• 최재원(경상국립대학교 화학과) | Jaewon Choi (Department of Chemistry, Gyeongsang National University, Jinju 52828, Republic of Korea) Corresponding author