Manufacture of cordierite foams by direct foaming

Silva, Elisabete Ribeiro; Correia, N.; Silva, J. M.; Oliveira, Fernando Almeida Costa; Ribeiro, F. R. M. C.; Bordalo, J. C.; Ribeiro, M. F.

http://hdl.handle.net/10400.9/1039

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Authors

Silva, Elisabete Ribeiro

Correia, N.

Silva, J. M.

Oliveira, Fernando Almeida Costa

Ribeiro, F. R. M. C.

Bordalo, J. C.

Ribeiro, M. F.

Abstract(s)

Open cell cordiereti fosms were prepared by a direct foaming two-component polyurethane (PUR)/ceramic system. Throught optimization of several experimental parameters such as contents of catalysts and ceramic cordiereti precursor, as well as plasticizer presence, foams with porosites 85-95&% and densities ranging from 130-410 kg/m3 were obtained. Thse foams characteristics make them attractive to be used as catalyst supports. The new two-component PUR/ceramics system developped allows the high solid's loading (higher than 40 wt. %). Finer ceramic particles in this system provide better particles packaged and cohesion upon sintering, favouring the cordiereti foam stability.

Keywords

Cordiereti foam Polyurethane Direct foaming Porosity Density Cellular structure

URI

http://hdl.handle.net/10400.9/1039

Citation

Silva, E. R.; Correia, N.; Silva, J. M.; Oliveira, F. A. Costa; Ribeiro, F. R. M. C.; Bordalo, J. C.; Ribeiro, M. F. Manufacture of cordierite foams by direct foaming. In: Polimery, Vol. 52, Nº 5, 2007, p. 351-356