Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Prediction of Viscosity in Liquid Epoxy Resin Mixed with Micro/Nano Hybrid Silica

액상 에폭시 수지와 마이크로/나노 하이브리드 실리카 혼합물의 점도 예측

  • Huang, Guang-Chun (Performance Materials Team/R&D Center, KOLON Industries, Inc.) ;
  • Lee, Chung-Hee (Department of Polymer Science and Engineering, Kumoh National Institute of Technology) ;
  • Lee, Jong-Keun (Department of Polymer Science and Engineering, Kumoh National Institute of Technology)
  • 황광춘 (코오롱 인더스트리(주) 기능소재연구팀) ;
  • 이충희 (금오공과대학교 고분자공학과) ;
  • 이종근 (금오공과대학교 고분자공학과)
  • Received : 2010.11.23
  • Accepted : 2011.01.03
  • Published : 2011.02.27
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Abstract

The relative viscosity was measured at different filler loadings for a cycloaliphatic epoxy resin and hexahydro-4-methylphthalic anhydride hardener system filled with micro/nano hybrid silica. Various empirical models were fitted to the experimental data and a fitting parameter such as critical filler fractions (${\phi}_{max}$) was estimated. Among the models, the Zhang-Evans model gave the best fit to the viscosity data. For all the silica loadings used, ln (relative viscosity) varied linearly with filler loadings. Using the Zhang-Evans model and the linearity characteristics of the viscosity change, simple methods to predict the relative viscosity below ${\phi}_{max}$ are presented in this work. The predicted viscosity values from the two methods at hybrid silica fractions of $\phi$ = 0.086 and 0.1506 were confirmed for a micro:nano = 1:1 hybrid filler. As a result, the difference between measured and predicted values was less than 11%, indicating that the proposed predicting methods are in good agreement with the experiment.

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References

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