Huokoisten materiaalien modifiointi

摘要

PCT No. PCT/GB93/01118 Sec. 371 Date Mar. 15, 1995 Sec. 102(e) Date Mar. 15, 1995 PCT Filed May 28, 1993 PCT Pub. No. WO93/24705 PCT Pub. Date Dec. 9, 1993.A method of treating a porous material comprising establishing a pressure differential across the material and treating the higher pressure side with a suspension dispersion or aerosol of droplets of a liquid. The droplets enter at least some of the pores, with the treatment conditions being such that the aerodynamic forces within the pores exceed the surface tension forces maintaining the integrity of the droplets. The droplets thus spread to provide a surface coating within the pores.