Hagyományos bevonatok teljesítmény mutatói

Varnished wooden surfaces got widespread in Europe in the 17 th century; their golden era lasted till the 1930s, when the easier applicable nitrocellulose based lacquers gradually took their place in the furniture industry. Nowadays besides furniture restoration the natural surface treating materials are newly rediscovered, polished furniture is considered fashionable and prestigious. Lacquers based on synthetic resins are relatively well documented with regard to their behavior during service, whilst few results exist about polishes this regard. Since almost every workshop used different formula for their polishes, this study investigates and compares those with significantly different composition, in order to determine the difference – if there is any – between their gloss, color brightening effect and adhesion thus allowing a purposeful choice for the users. Most of the authors dealing with surface treatment of wood describe the different characteristics such adhesion of the lacquer layer, gloss of the surface etc. being strongly dependent from the wood species the layer was applied on, accordingly our measurements were performed on two wood species: walnut ( Juglans regia L.) and cherry (Prunus subg. Cerasus) . Four different polish formulas were applied: french polish and three types of english polish. Haze and gloss, pencil hardness, shock resistance, adhesion and resistance against chemical impacts was tested and evaluated in comparison with the performance of nitro cellulose lacquers too. Key words: polish recipes, english polish, french polish, gloss, pencil hardness, varnish adhesion, shock resistance, resistance against chemicals.