Radiation-stimulated oxidation of the plastic surface in a water-air flow

Abstract

Radiation-stimulated surface oxidation of polyolefin powders and films is considered from the point of view of enhancing their adhesion to building materials. The technological convenience of oxidative modification in the presence of water is noted. Variants of practical in-line oxidation with vertical and horizontal directions of the electron beam are shown. Using road bitumen and a test adhesive tape, the adhesion of 0.1 mm polyethylene and polypropylene films was tested under single-layer irradiation in air, as well as inside an energy-absorbing filter in a position corresponding to the maximum depth-dose distribution for a 3 MeV electron beam. The results obtained indicate that a more stable enhancement of adhesion is provided when irradiation occurs in air in the presence of water or an aqueous solution of formic acid.