화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Applied Chemistry for Engineering, Vol.30, No.3, 371-378, June, 2019
DOI10.14478/ace.2019.1022  Export Citation
그래핀나노플레이트렛 및 재활용 페놀폼으로 제조된 목재기반 복합보드의 난연 및 열적 특성
Flame Retardant and Thermal Properties of Wood-based Composite Boards Prepared by Graphene Nanoplatelet/Reused Phenolic Foam
한정인1, 2, 김민지1, 2, 송은지1, 2, 김경훈1, 2, 인세진3, †, 이영석1, 2, †
  • 1충남대학교 응용화학공학과
  • 2 탄소융복합기술연구소
  • 3우송대학교 소방방재학과
Jeong-In Han1, 2, Min-Ji Kim1, 2, Eun Ji Song1, 2, Kyung Hoon Kim1, 2, Se-Jin In3, †, and Young-Seak Lee1, 2, †
  • 1Department of Chemical Engineering and Applied Chemisrty, Chungnam National University, Daejeon 34134, Republic of Korea
  • 2Institute of Carbon Fusion Technology (InCFT), Chungnam National University, Daejeon 34134, Republic of Korea
  • 3Department of Fire and Disaster Protection Engineering, Woosong University, Daejeon 34606, Republic of Korea
E-mail:,
초록
그래핀나노플레이트렛(GnP)이 목재기반 복합보드의 열적 및 난연 특성에 미치는 영향을 조사하기 위하여, 5, 10, 및 20 wt% 등 여러 가지 GnP 함량으로 GnP/재활용 페놀폼(re-PF)/목재 복합보드를 제조하였다. 제조된 복합보드의 열적 특성 및 난연성은 열중량분석(TGA) 및 한계산소지수(LOI) 시험을 통하여 각각 분석되었다. 복합보드의 열안정성은 GnP 첨가량에 따라 비례하게 증가하였고, 이 복합보드의 탄화수율(char yield)은 순수 목재보드 대비 최대 22%까지 증가하였다. 복합보드의 LOI 값은 순수 목재보드보다 약 4.8~7.8% 높았다. 또한, 재활용 페놀폼 및 GnP 첨가로 인하여 복합보드의 난연성이 크게 향상되었음을 확인하였다. 이는 열안정성이 높은 재활용 페놀폼과 GnP가 복합보드의 열분해 개시 온도를 지연시키고, 탄화층(char layer)을 보다 조밀하고 두껍게 형성하였기 때문에, 복합보드의 연소 지연효과를 이끌었다. 특히 탄소기반 재료로서 GnP는 탄화층의 형성을 용이하게 하고, 탄화수율을 현저히 증가시켜 재활용 페놀폼에 비하여 난연성에 높은 효과를 나타내었다.
Graphene nanoplatelet (GnP)/reused phenolic foam (re-PF)/wood composite boards were fabricated with different GnP content as 5, 10 and 20 w/w% to investigate the effect of GnP on thermal- and flame retardant properties of wood-based composite boards. The thermal- and flame retardant properties of fabricated composite boards were investigated by thermogravimetric analysis (TGA) and limiting oxygen index (LOI), respectively. The thermal stability of the composite boards increased proportionally with respect to the amount of GnP, and the char yield of these boards increased up to 22% compared to that of the pure wood board. The LOI values of composite boards were about 4.8~7.8% higher than those of using pure wood boards. It was also confirmed that the flame retardant properties of composite boards were remarkably improved by the addition of re-PF and GnP. These results were because of the fact that the re-PF and GnP with a high thermal stability delayed the initial thermal degradation temperature of composite boards and made their char layers denser and thicker which led the overall combustion delay effect of the composite board. Especially, GnP as a carbon-based material, facilitated the char layer formation and increased remarkedly the char yield, which showed higher effect on flame retardant properties than those of the re-PF.
Keywords:Flame retardant;Graphene nanoplatelet;Wood-based board;Limiting oxygen index
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