Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Study of the Crystal Structure of a Lyocell Precursor for Carbon Fibers

탄소섬유용 리오셀 전구체의 결정구조에 관한 연구

  • Park, Gil-Young (New Business Division, Dissol Co) ;
  • Kim, Woo-Sung (New Business Division, Dissol Co) ;
  • Lee, Su-Oh (Department of Organic Materials & Fiber Engineering, Jeonbuk National University) ;
  • Hwang, Tae-Kyung (The 4th R&D Institute, Agency for Defense Development) ;
  • Kim, Yun-Chul (The 4th R&D Institute, Agency for Defense Development) ;
  • Seo, Sang-Kyu (The 4th R&D Institute, Agency for Defense Development) ;
  • Chung, Yong-Sik (Department of Organic Materials & Fiber Engineering, Jeonbuk National University)
  • Received : 2019.06.06
  • Accepted : 2019.09.15
  • Published : 2019.10.01
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Abstract

In this study, the pre-treatment of lyocell fabrics was performed using phosphoric acid (PA) as a phosphorus flame retardant and melamine resin (MR) as a cross-linking agent to fabricate carbon fabrics using lyocell fibers. The physical and chemical changes were investigated by thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometry (XRD) and weight analysis. We confirmed that the weight yield of the carbon fabrics compared to the untreated fabrics increased by 14.7%, and width and length yield of the fabrics increased by 15% and 15.5%, respectively. This may be due to the effect of promoting the dehydration reaction of cellulose, forming char on the fiber surface, which induces a crosslinking reaction in the cellulose molecule and stabilizes the structure upon pyrolysis.

본 연구에서는 리오셀 섬유를 사용하여 탄소직물을 제조함에 있어, 인계 난연제인 Phosphoric Acid(PA)와 가교제인 Melamine resin (MR)을 사용하여 섬유의 전처리를 수행하고 TGA, FT-IR, XRD, 중량 분석을 통하여 물리적, 화학적 구조 변화에 대하여 고찰하였다. 전처리를 통하여 내염화 및 흑연화된 직물의 경우 미처리 직물과 비교하여 중량 수율이 14.7%, 직물 폭과 길이의 수율이 각각 15%, 15.5% 증가함을 확인하였다. 이러한 결과는 셀룰로오스의 탈수반응을 촉진과 함께 섬유 표면에 char를 형성하고, 셀룰로오스 분자 내의 가교반응을 유도하여 내염화 시 안정한 구조 형성에 의한 효과로 설명할 수 있다.

Keywords

References

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