摘要:
A method of preparing a dispersed solution of carbon-containing particles of nanometric size includes: preparing a polymeric matrix of a determined viscosity, then introducing into the matrix a fraction of carbon-containing particles and a fraction of wetting agent, the solvent of the matrix, and maintaining under agitation until a sol of stable viscosity is obtained, these operations being repeated until the carbon-containing particles and the solvent are exhausted. The dispersal solution includes: in a ratio to the total volume of solution: i) 1% to 4%, preferably 2% to 4% (m/v), of carbon-containing particles in suspension, ii) 20% to 40% (v/v) of a polymeric matrix, and iii) a wetting agent, the solvent of the polymeric matrix, said dispersed solution comprising neither binder nor dispersing agent.
摘要:
Method of preparing a metal oxide layer on a substrate, in which the following successive steps are carried out: a) a metal oxide powder is dispersed in a liquid medium comprising a dispersion solvent and a dispersant, the said liquid medium containing neither plasticizer nor binder, by means of which a suspension A of the said metal oxide powder in the said liquid medium is obtained; b) a solution of at least one polymer in a solvent is added to the said suspension A, by means of which a suspension B is obtained; c) suspension B is deposited on the substrate by a dip coating method, by means of which a green layer is obtained; d) the green layer obtained in step c) is dried; and e) the dried layer obtained in step d) is calcined.