Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Characterization for Blend of Siloxane Prepolymer onto Epoxy Resin

Siloxane Prepolymer의 에폭시수지 블렌드 특성

  • Kim, Kong-Soo (Dept. of Ind. And Eng. Chem., Chungbuk National University) ;
  • Park, Jun-Ha (Dept. of Ind. And Eng. Chem., Chungbuk National University) ;
  • Shin, Jae-Sup (Dept. of Ind. And Eng. Chem., Chungbuk National University) ;
  • Kim, Yeong-Jun (Dept. of Chemistry, Chungbuk National University)
  • 김공수 (충북대학교 공업화학과 화학과) ;
  • 박준하 (충북대학교 공업화학과 화학과) ;
  • 신재섭 (충북대학교 공업화학과 화학과) ;
  • 김영준 (충남산업대)
  • Published : 1997.08.31
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Abstract

In solution and melting state, SiOD prepolymer was prepared by cured excess DDM with epoxy-terminated siloxane oligomers to control phase separation when DGEBA was blended with PDMS. DGEBA/SiOD prepolymer was also cured at $150^{\circ}C$ for 3hrs. Mechanical and thermal properties of the cured prepolymer specimen were investigated. DGEBA/SiOD60 specimen blended SiOD prepolymer had the best flexural strength, modulus and impact strength. To show crack-formation procedure to morphology, DGEBA/DDM neat specimen was flowed homogeneously in direction of crack energy, whereas DGEBA/SiOD$(30{\sim}60)$ specimen showed heterogeneously dispersed particles and scattered domain of crack energy, but DGEBA/SiOT specimen showed homogeneous phase.

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