CONTROL PROCESS OF ADHESION OF ACRYLIC FILMS ON A BRASS SUBSTRATE WITH IMPROVED FIRE RESISTANCE
» Número: RS20181274A1 (A1)
» Fecha Publicación: 30/04/2020
» Solicitante: TEHNOLOSKO METALURSKI FAKULTET???[RS]
» Inventor: TOMI?? NATAŠA DR???[RS]; VUKSANOVI?? MARIJA DR???[RS] (4)
Within the scope of the present invention,the effect of the structure ofpolyhedral oligomeric silsesquioxane (POSS) on the adhesion of composite filmson metal supstrate has been researched. Composite filmscosistof UV polymerisedBisphenol A-glycidylmethacrylateandtriethylene glycol dimethacrylate (Bis-GMA/TEGDMA) matrixand reactive POSS structure to improve adhesion. Composite films are made with 1, 3, 5 and 10 wt. % of POSS reagents. Adhesion was assessedby Vickers micro-hardness test method. The wetting angle ofcomposite filmsof the brass metal substrate was measured and compared with the adhesion parameter obtained from the microhardness measurement.Optical microscopy showed phase separation of POSS reagentwhich indicating a measure of compatibility between the matrix and each particle. The shape and size of the print were analysed and correlated with the quality of adhesion. The methods used in this studyto evaluatethe strength and quality of adhesion clearly showed that the improvement of adhesion ofBis-GMA/TEGDMA matrxand POSS reagentcontaining a functional hydroxyl and methacrylic group.