Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Thermal Properties and Flame Retardancy of Poly(amic acid)/organoclay Nanocomposites

Poly(amic acid)/organoclay 나노복합체의 열적특성 및 난연성

  • Kim, Sun (Korea Research Institute of Chemical Technology Reliability Assessment Center) ;
  • Yoon, Doo-Soo (Department of Polymer Science & Engineering, Chosun University) ;
  • Jo, Byung-Wook (Department of Chemical Engineering, Chosun University) ;
  • Choi, Jae-Kon (Department of Polymer Science & Engineering, Chosun University)
  • 김선 (한국화학연구원 신뢰성평가센터) ;
  • 윤두수 (조선대학교 공과대학 응용화학소재공학과) ;
  • 조병욱 (조선대학교 생명화학공학과) ;
  • 최재곤 (조선대학교 공과대학 응용화학소재공학과)
  • Published : 2007.09.29
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Abstract

Polyamic acid(PAA)/organoclay nanocomposites containing phosphorous were prepared by solution blending of phosphorylated PAA(PPAA) and organically modified montmorillonite(O-MMT) as a type of layered clays. The nanocomposites were characterized by FT-IR, DSC, TGA, PCFC, SEM, and XRD. The preparation of nanocomposites was confirmed by FT-IR and XRD. SEM pictures showed that the organoclay was dispersed well in the PAA matrix relatively. XRD results indicated that the O-MMT layers were intercalated. The thermal stability and flame retardancy of O-MMT/PPAA nanocomposites were higher than those of pure PAA. PCFC results also showed that the heat release capacity and total heat release values of O-MMT 4 wt%/PPAA-0.2, 0.4, 0.6 composites were decreased with increasing the mole ratio of phosphorous. It was found that the nanocomposite films had the potential to be used as a fire safe material.

유기화된 montmorillonite(O-MMT)와 인을 포함하는 polyamic acid(PPAA)를 용액 블렌딩하여 PAA/organoclay 나노 복합체를 제조하였다. 이들 나노 복합체들의 연구를 위하여 FT-IR, DSC, TGA, PCFC, SEM 그리고 XRD를 이용하였다. 나노복합체들의 제조확인은 FT-IR과 XRD 분석을 통하여 확인하였다. SEM 사진들은 O-MMT가 매트릭스 고분자에 비교적 고르게 분산되어 있음을 보여 주었고, XRD 결과를 통하여 O-MMT가 intercalation 되었음을 확인하였다. O-MMT/PPAA 나노복합체들의 열안정성 및 난연성은 순수한 PAA 보다 크게 높았으며, O-MMT/PPAA-0.2, 0.4, 0.6 복합체들의 열방출 용량과 총열방출 값들은 인의 함량 증가와 함께 감소하였다. 본 연구에서 제조된 나노복합체 필름들이 화재안전재료로서 사용될 수 있는 잠재성을 가지고 있음을 확인하였다.

Keywords

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