Posts Tagged ‘materials’

Production And Use Of Enamels PF-115. Part I.

General | Posted by ninjagrr
Apr 14 2016

Enamel PF-115 from the Soviet times and today is the most massively produced and consumed enamel in Russia, not only among alkyd materials, but also, perhaps, among the full range of paints. Despite in the fast-burst, especially in the last decade, the Russian market, acrylic water-dispersion paints, which rightly are more modern, fireproof and environmentally, as well as easier to manufacture – enamel PF-115 in no hurry to hand over positions. Let us consider in more detail what the enamel PF-115, its composition and main production methods. Enamel PF-115 – a suspension of pigments and fillers in semi-finished pentaphthalic alkyd varnish. Mainly used to produce semi-finished enamel pentaphthalic alkyd varnish PF-060. As the most widely used pigment titanium dioxide rutile – basic white pigment, not only in lacquers, but also in other industries. And also a huge range of colored pigments, such as: iron oxide pigment, lead, zinc, molybdate crown, carbon black, chromium oxide, ultramarine, a wide variety of organic pigments, which give the enamel PF-115 of various colors and shades.

As fillers used mikrokaltsit, microtalcum, mikrodolomit etc. Unfortunately, many manufacturers still used as a filler of natural chalk, which greatly affects the appearance of the coating, as well as its weatherability and physical characteristics. For the drying of the enamel PF-115 necessarily impose drier, which serves as a catalyst for the polymerization (curing) of film-forming, in this case, PF-060 varnish. Driers – a salt of monocarboxylic acids, which differ in their metal content and salt-forming acid. The most promising and effective are trehmetalnye driers, in particular: lead-manganese-cobalt, lead and manganese-calcium, etc. The main solvents used in manufacture of enamel PF-115, are xylene, mineral spirits, solvent, toluene. To improve the quality of the coatings, as well as to increase the shelf life of enamel PF-115 is introduced into the various functional additives: antiplenochnye materials such as Methyl ethyl ketoxime, and antiflotatsionnye antisedimentatsionnye supplements, as well as various dispersants to facilitate the dispersion process (distribution, size reduction) of pigments and fillers in the lacquer.