Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Effect of Cross-linking Treatment of Lyocell Fabric on Carbon Fabric Properties

리오셀 섬유의 가교 처리가 탄소 직물 특성에 미치는 영향

  • Lee, Su-Oh (Department of Organic Materials & Fiber Engineering, Jeonbuk National University) ;
  • Park, Gil-Young (New Business Division, Dissol Co) ;
  • Kim, Woo-Sung (New Business Division, Dissol Co) ;
  • 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 : 2019.06.12
  • Accepted : 2019.10.12
  • Published : 2019.12.01
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Abstract

Cellulose-based carbon fabrics are used in aerospace nozzles have low thermal conductivity and high ablation resistance. However, there is a disadvantage in that the weight is reduced by 70~90% in the pyrolysis process and graphitization process and the residual rate is low when the final carbon fabric is produced. In this study, phosphoric acid as a phosphorus flame retardant and Citric acid as a cross-linking agent were treated on the lyocell fabrics. After that the functional groups were identified and thermal properties were confirmed by FT-IR, XRD and TGA. The yields of the final carbon fabrics were also compared through the pyrolysis and graphitization process. The graphitized yield increased to 8.1% with increasing citric acid to 16 wt% added.

우주 항공용 노즐에 사용되는 셀룰로오스계 탄소 직물은 낮은 열전도도, 높은 내삭마 특성을 가지고 있다. 그러나 내염화 및 흑연화 공정에서 70~90% 중량이 감소하여 최종 탄소 직물 제조 시 수율이 낮은 단점이 있다. 본 연구에서는 리오셀 직물에 인계난연제로 인산(Phosphoric acid), 가교제로 시트르산(Citric acid)을 사용하여 전처리한 후 FT-IR, XRD, TGA 분석을 통하여 화학적 구조 및 열적 특성 변화를 확인하였다. 또한 리오셀 직물의 내염화 및 흑연화 후 중량을 측정하여 시트르산이리오셀 직물 수율 변화에 미치는 영향에 대하여 확인하였으며, 16 wt% 첨가 시 흑연화 수율이 8.1% 까지 증가하는 것을 확인하였다.

Keywords

References

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