The Effect of Processing Parameters to Manufacture Self-healing Microcapsules for Composite Materials

복합재료의 자가 치료용 캡슐 제작시 공정 변수들의 영향

  • Published : 2001.04.01

Abstract

An experimental study to find the effect of processing parameters for self-healing microcapules is performed. These microcapsules can be applied to accomplish the healing of delamination damage in woven E-glass/epoxy composites. This paper introduces the self-healing concept and presents a method for solving the microcapsule size and shape. Additionally, processing parameters are varied during the formation of microcapsules and these capsules are observed through optical microscope. To obtain thermogravimetric(TG) curve for the manufactured microcapsules, TGA tests are executed. From these results, the best processing conditions for the formation of capsules are found as follows: (1) temperature of solution $ 50^{\circ}C$, (2) potential of hytdrogen(pH) 3.5ppm, and (3) agitation 500~600rpm.

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References

  1. White S. R., Sottos N. R., Geubelle P. H., Moore J. S., Kessler M. R., Sriram S. R., Brown E. N. and Viswanathan S., 'Self Healing Composite Materials,' Science in review
  2. Carolyn Dry, 'Procedures developed for self-repair of polymer matrix composite materials,' Composite Structure 35, pp. 263-269, 1996 https://doi.org/10.1016/0263-8223(96)00033-5
  3. Victor C. Li, Yun Mook Lim and Yin-Wen Chan, ' Feasibility study of a passive smart self-healing cementitious composite,' Int'l J. Composites Engineering, Part B 29B, pp. 819-827, 1999 https://doi.org/10.1016/S1359-8368(98)00034-1
  4. Carolyn Dry and Wlliam McMillan, 'Three-part methylmethacrylate adhesive system as an internal delivery system for smart responsive concrete,' Smart Mater. Struct. 5, pp. 297-300, 1996 https://doi.org/10.1088/0964-1726/5/3/007
  5. Michael R. Kessler and Scott R. White, 'Self-activated healing of delamination damage in woven composites,' University of Illinois at Urbana and Champaign, TAM Report No. 947, pp. 1-30, 2000
  6. ASTM D 3850-84, 'Standard Test Method for Rapid Thermal Degradation of Solid Electrical Insulating Materials By Thermogravimetric Method,' pp. 313-316, 1998