Surface treatment process of natural stone by atmospheric pressure plasma.

摘要

Surface treatment process of natural stone, agglomerated and other inorganic materials by atmospheric pressure plasma.; This procedure for the treatment of natural stone, characterized in that it comprises the following steps:; to) The material is placed to be treated in a chamber at atmospheric pressure. ; b) a particular gas which can be air, argon or oxygen is selected. ; c) Pass the flow of the selected gas, by one or more high voltage electrodes. ; d) Electrodes create positively charged particles in air medium, which are directed to the substrate surface (natural stone) ions. ; and) Polarization substrate surface by positively charged particles. ; The treatment conditions are as follows:; - Treatment frequency: 19-23 kHz. ; - Natural stone-plasma distance: 1-12 mm. ; - Processing speed: 1-50 m / min. ; - Number of consecutive treatments: 1-10.