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Journal of Materials Science

, Volume 42, Issue 8, pp 2854–2861 | Cite as

Fabrication of cellular and microcellular ceramics with controllable open-cell content from polysiloxane-LDPE blends: I. Compounding and Foaming

  • Chunmin Wang
  • Jin Wang
  • Chul B. Park
  • Young-Wook Kim
Article

Abstract

A novel processing route for fabricating cellular and microcellular ceramics with controllable open-cell content has been developed. The proposed strategy for producing cellular and microcellular ceramics involves: (i) development of desired foamable polysiloxane–polyolefin blends by using a compounder element, in which the polyolefin phase is uniformly dispersed in the polysiloxane matrix, (ii) foaming the obtained blends by implementing the thermodynamic instability principle to produce a cellular or microcellular ceramic precursor structure, and (iii) completing the organic–inorganic transition without sacrificing the obtained cellular or microcellular structure and inducing open-channels in the cell walls by burning out the sacrificial dispersed polyolefin phase at elevated temperatures. By controlling the viscosity of the dispersed polyolefin phase, the polyolefin concentration and compounding parameters, the polysiloxane–polyolefin blend morphology can be varied. Furthermore, plus a deliberate control of foaming and pyrolyzing parameters, the foam morphology and open-cell content of produced cellular and microcellular ceramics can be adjusted. In this paper, the technique to get a desired cellular and microcellular ceramic precursor structure is demonstrated. The deliberate pyrolysis technique to complete the organic–inorganic transition and the mechanical properties of the obtained microcellular ceramics will be discussed in another paper.

Keywords

Foam LDPE Polysiloxane Viscosity Ratio Ceramic Foam 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The work at the University of Seoul was supported by the Center for Advanced Materials Processing (21C Frontier R&D Program of the Ministry of Commerce, Industry, and Energy, Republic of Korea).

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Chunmin Wang
    • 1
  • Jin Wang
    • 1
  • Chul B. Park
    • 1
  • Young-Wook Kim
    • 2
  1. 1.Microcellular Plastics Manufacturing Laboratory, Department of Mechanical and Industrial EngineeringUniversity of TorontoTorontoCanada
  2. 2.Department of Materials Science and EngineeringThe University of SeoulSeoulKorea

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