Effect of Siloxane Oligomer on Thermal Stability and Internal Stress of Epoxy Resins

실록산 올리고머가 에폭시 수지의 열안정성 및 내부응력에 미치는 영향

  • Kwak, Geun-Ho (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Park, Soo-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Park, Jun-Ha (School of Chemical Engineering, Chungbuk National University) ;
  • Kim, Kong-Soo (School of Chemical Engineering, Chungbuk National University)
  • 곽근호 (한국화학연구소 화학소재연구부) ;
  • 박수진 (한국화학연구소 화학소재연구부) ;
  • 박준하 (충북대학교 화학공업부) ;
  • 김공수 (충북대학교 화학공업부)
  • Received : 1999.02.22
  • Accepted : 1999.06.05
  • Published : 1999.08.10


The effect of siloxane oligomer content on thermal stability and internal stress of DGEBA epoxy resin was investigated. Siloxane-epoxy polymers having terminal epoxy group were prepared by reaction of siloxane-DDM prepolymer with DGEBA epoxy resin. Thermal stability was studied in terms of the initial decomposition temperature(IDT), temperature of maximum rate of weight loss($T_{max}$), integral procedural decomposition temperature(IPDT), and decomposition activation energy($E_t$) using TGA data. The thermal stability increased with increasing the siloxane oligomer content and showed a maximum value in the case of 5 wt% siloxane oligomer content in the blend system. While, the coefficient of thermal expansion(${\alpha}_r$) and the flexural modulus($E_r$) allowed us to study internal stress of the blend system. As the content of siloxane oligomer increases, the internal stress systematically decreases as decreasing both ${\alpha}_r$ and $E_r$.


Supported by : 서울대학교


  1. Advances in Chemistry Series v.114 Epoxy Resin Chemistry R. S. Bauer
  2. Ekpoxy Resins : Chemistry and Technology(2nd Ed.) C. A. May
  3. Polymer, J. v.31 S. J. Park;W. B. Park;J. R. Lee
  4. J. Reinf. Plast. Comp. v.8 B. J. Jane;J. Y. Lian;L. R. Hwang;W. K. Shin
  5. J. Appl. Polym. Sci. v.52 M. Akay;J. C. Crackneil
  6. J. Mater. Sci. v.26 R. A. Pearson;A. F. Yee
  7. J. Appl. Polym. Sci. v.44 H. B. Wang;S. J. Li;J. Y. Ye
  8. Polym. Int. v.31 A. Matsumoto;K. Hasegata;A. Fukuda
  9. Kobunshi. Ronbunshu v.44 M. Ogata;T. Kwata;N. Kinjo
  10. Chemistry and Technology of Silicones W. Noll
  11. Japan Kokai Patent, 1-230623
  12. Japan Kokai Patent, 64-9125
  13. J. Mater. Sci. v.33 S. J. Park;J. R. Lee
  14. Polymer(Korea) v.23 G. H. Kwak;S. J. Park;J. R. Lee;S. K. Hong
  15. Anal. Chem. v.33 C. D. Doyle
  16. High-Temperature plastics W. Brenner;D. Lum;M. W. Riley
  17. J. Polym. Sci. v.3 L. H. Lee
  18. Anal. Chem. v.35 H. H. Horwitz;G. Metzger
  19. IEEE Trans. Comp. Hybrids, Manuf. Technol. v.8 R. E. Thomas
  20. IEEE Trans. Comp. Hybrids, Manuf. Technol. v.8 K. Kumata;K. Iko;H. Tabata
  21. J. Appl. Polym. Sci. v.50 T. H. Ho;C. S. Wang