화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.25, No.4, 418-424, August, 2014
Export Citation
NaCl/H3PO4 내염화 처리가 라이오셀 섬유의 열 안정 및 내산화 특성에 미치는 영향
Effects of NaCl/H3PO4 Flame Retardant Treatment on Lyocell Fiber for Thermal Stability and Anti-oxidation Properties
김은애1, 2, 배병철1, 2, 이철위1, 3, 전영표1, 3, 이영석2, 인세진4, 임지선1, 3, †
  • 1한국화학연구원 C-산업육성센터
  • 2충남대학교 바이오 응용화학과
  • 3과학기술연합대학원대학교 청정화학 및 생물학과
  • 4우송대학교 소방방재학과
Eun Ae Kim1, 2, Byong Chol Bai1, 2, Chul Wee Lee1, 3, Young-pyo Jeon1, 3, Young-seak Lee2, Se Jin In4, and Ji Sun Im1, 3, †
  • 1C-Industry Incubation Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 305-600, Korea
  • 2Department of Applied Chemistry and Biological Engineering, Chungnam National University, Daejeon 305-764, Korea
  • 3Department of Apllied Green Chemistry and Environmental Biotechnology, University of Science and Technology, Daejeon 305-333, Korea
  • 4Department of Fire and Disaster Protection Engineering, Woosong University, Daejeon 300-718, Korea
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초록
본 연구에서는 NaCl/H3PO4 혼합수용액을 사용하여 라이오셀 섬유의 내염화 처리를 수행하고 이에 따른 열 안정성과 내산화성의 향상 효과를 고찰하였다. 라이오셀 섬유를 다양한 공정조건으로 내염화 처리한 후 열 안정성과 내산화성을 측정 및 분석하고 그에 따른 메커니즘을 제시하였다. 실험결과, 내염화 처리된 라이오셀 섬유의 적분 열분해 온도 (integral procedural decomposition temperature, IPDT)와 한계산소지수(limited oxygen index, LOI)는 약 23, 30% 증가하였으며, 활성화 에너지(activation energy, Ea) 값은 약 24% 향상된 것을 알 수 있었다. 이러한 결과는 H3PO4와 NaCl가 연소시 에스테르화 반응, 탈수소화 반응 및 C-C결합의 분해반응으로 char 형성을 촉진하고 섬유 표면에 형성된 탄소 층을 형성함으로써, 고분자 수지 내부로 산소와 열 공급을 물리적으로 차단하여 열 안정성과 내산화성이 향상된 것으로 판단된다. 이러한 결과를 바탕으로, NaCl/H3PO4 혼합수용액을 이용한 내염화 처리 공정의 최적화된 인자 및 메커니즘을 제시하였고 열 안정성과 내산화성이 향상된 라이오셀을 성공적으로 제조하였다.
The improved thermal stability and anti-oxidation properties of Lyocell fiber were studied based on flame retardant treatment by using NaCl/H3PO4 solution. The optimized conditions of flame retardant treatment were studied on various maxing ratio of NaCl and H3PO4 and the mechanism was proposed through experimental results of thermal stability anti-oxidation. The IPDT (integral procedural decomposition temperature), LOI (limited oxygen index) and Ea (activation energy) increased 23, 30 and 24% respectively via flame retardant treatment. It is noted that thermal stability and anti-oxidation improved based on char and carbon layer formation by dehydrogenation and dissociation of C-C bond resulting the hindrance of oxygen and heat energy into polymer resin. The optimized conditions for efficient flame retardant property of Lyocell fiber were provided using NaCl/ H3PO4 solution and the mechanism was also studied based on experimental results such as IDT (initial decomposition temperature), IPDT, LOI and Ea.
Keywords:lyocell fabrics;flame retardant treatment;thermal stability;anti-oxidation;thermo-gravimetric analysis
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