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  • Paints and varnishes /

    Varnishes, parquet

    Varnishes, parquet Lucky to protect flooring : range, quality and price conditions.

    In recent years, the market of building materials increased sharply for sale piece, boards and laminated flooring. There was a lot of companies that sell flooring, parquet, and service providers in conducting parquet works. Especially increased range of flooring is produced (including imported equipment), and imported, especially from exotic wood species. It should be noted that the laying of flooring, especially artistic, requires a number of operations, of which the ultimate is the parquet lacquer .

    Lucky to protect flooring (parquet lacquers) are the most widely used in the practice of construction works. More relatively recently it was considered fashionable oak parquet, regularly rub with mastic. But with the advent of modern matte and semi-gloss varnish, preserving parquet design, as well as reliable, durable and water-resistant polyurethane varnish, floor lacquered are used almost everywhere. At the same time, with the introduction of a wide range of imported parquet varnishes sharply increased requirements to the quality of domestic products of similar purpose. " Gak, for many years the assortment of domestic industry parquet lacquers virtually exhausted by the two marks -alkidnym varnish PF-231 and with the addition of urea-alkyd resin varnish MCH-0163 acid curing. Despite the fact that currently these lakes occupy a dominant position on the market in recent years has started to produce and appear in stores a more modern range of parquet lacquers - epoksidnoalkidnyh, uretanovoalkidnyh, water and acrylic akriluretanovyh finally, one- and two-component polyurethane .

    Consider this offer in more detail:

    Alkyd varnish PF-231 is the oldest at the time of development and widespread among produced in parquet lacquers. Its advantages are ease of application and good appearance of the film. But it is equally obvious its shortcomings: lack of toughness, abrasion resistance and water resistance of the film, leading eventually to the lack of durability of the coating does not exceed, as a rule, two or three years.

    Lac MCH-0163 (based on a mixture of urea and alkyd resins with the addition of an acid hardener - two-pack), certainly has a high performance. In hardness, water resistance, abrasion lacquer coating with the above-mentioned alkyd paint is superior. However, the disadvantages of this varnish are poor processability in the application (a pungent smell, it is difficult to get rid of bubbles during application), darkening of the film under the influence of sunlight, lack of elasticity of the film.

    Unfortunately, all acid-curing lacquers called inherent, serious flaw in the process of film forming the substrate liberates toxic formaldehyde, which has also mutagenic. For this reason, perhaps, the application of these varnishes is limited: according to our information, in the West they are released only in Poland and Slovenia.

    Attempts to improve the quality of the parquet alkyd varnish led to a single-component lacquer Alkidnoepoksidnogo EP-2146, in which as a modifying agent used epoxy resin. This varnish is produced in Yaroslavl and Kotovsk factory paint coating based on it has higher compared with alkyd, performance: hardness, abrasion resistance, water resistance. Abroad lacquers of this type are not made.

    Much more common practice in the global coatings prepared by modifying alkyd binders polyurethanes, carried out during the synthesis of the so-called uralkidov. Uralkidov use as film-forming formulations in parquet lacquers not only speeds up the process of drying the coating, but also leads to significant improvement in the performance of the above. Uralkidnye varnishes, perhaps most often used in the West to protect the parquet and labels in most cases they are referred to as polyurethane lacquers. Their major advantage is the relatively low price, slightly differs from the price of alkyd paints. It should be noted, however, that, according to data described in the article by Mr. BB Kudryavtseva (magazine " Coating materials and their application ", 2000, N5, S.7-11), domestic paint uralkidny AU-271 " Poliur " Cherkessia CVD production inferior to foreign analogues of the drying time, color and abrasion, the author explains the lack of flue uralkida synthesis process and the lack of polish in the formulation of so-called " sliding additives ".

    Most high-performance, primarily for water resistance and abrasion resistance of the coating to have a polyurethane varnish - as a one-component, moisture-curing due to air and two-component (Component-hydroxyl polyester first, second - isocyanate prepolymer), produced by many foreign firms. As of our country, we were able to identify only two companies producing such coatings (000 " polymerase "), which produces hardwood polyurethane lacquers under the trademarks " Gala " and " Sports " on imported raw materials, the other in Dzerzhinsk, Nizhny Novgorod region. (000 " ECOPOL "), which produces two-component polyurethane varnish UR-5-66 on the basis of domestic raw materials. However, both of these companies produce polyurethane varnishes parquet only in small amounts and can not meet the needs of the market. It should be noted that back in the sixties in the laboratory AA Blagonravova State Research and Design Institute of the paint industry CIPI LPC has been designed and produced in pilot-commercial scale magnificent one-component polyurethane parquet lacquer UR-19, received the highest ratings of consumers. Alas, unfortunately, now this varnish is not released.

    The current trend in the coatings industry - an exception from the LMC volatile and toxic solvents are not spared and the scope of parquet lacquers.

    On the shelves of stores can often find imported waterborne parquet lacquers, acrylic and akriluretanovoy basis. Their advantage, in addition to environmental and fire safety, is light in color - they are virtually colorless and do not change the color of the parquet, and the lack of - is quite complex technology applications: in most cases they require the use of special primers, and applied more layers than all of the above parquet lacquers. Besides water parquet lacquers are the most expensive of all the above types of varnishes. Considering the advantages and prospects of water lacquers, some domestic firms have begun, though as yet timidly, to develop their production.

    Most are cheap alkyd varnishes (PF-231) and acid-curing varnishes (MCH-0163), but the modification of epoxy varnishes (VC-2146) and urethane (AU-271) resins slightly increases the cost while significantly improving quality. Also easy to see that the same products from different companies, sellers and dealers of large factories much, sometimes almost in 2 times but different price. This fact should be considered when purchasing parquet lacquers, conducting search marketing.

    The most expensive, however, and provides greater durability when used are polyurethane varnish and certain types of water varnishes. I would like to stress that the producers have all the potential to produce all kinds of parquet lacquers on modern technical level. Moreover, comparative tests of varnish companies such as " Lakma-Color " and " Lakra synthesis " It showed that the most important pokazatelyu- abrasion resistance of coatings to paint coatings of these firms exceed the corresponding foreign counterparts (for example, the Finnish company " Tikkurila "), while being significantly cheaper. However, the products of these companies is available on a limited tonnage and does not determine the weather in the capital market. In addition, it is necessary to take into account the fact that the products of foreign firms tend to have a more comfortable and beautifully designed packaging and labels. We have also considered a typical stereotype: " overseas are always better ". Therefore, the majority of consumers who want a matte and satin parquet , bought for demanding applications and high-end repair expensive foreign-made lakes.

    Analyzing data on the prices of some types of imported parquet varnishes, easy to see that the price level of the products of foreign companies is 2-4 times more expensive than varnishes manufacturers, although here too there is considerable variation in prices - from 3.0 to 19.8 USD 1 liter of lacquer.

    In general, the observed dependence of the above-noted total price and quality of lacquer: the most common are cheap and alkyd paints and alkidnouretanovye, and the most expensive - urethane and acrylic and water akriluretanovye. In our opinion, the best compromise between the relatively low price and good quality are lacquers firms such as " Petri Paint ", the United States, " Amsterdam Color Works ", the United States, " Polifarb ", Poland, " Meffert AG ", Germany, " Tikkurila ", Finland (last - with the right choice of the manufacturer and the dealer).

    At work but varnishing parquet important are the thickness of the coating, the number of coats of lacquer and the associated costs of varnish on the square. meter of surface. It is impossible not to note the fact that this in the majority of instructions for applying parquet varnish, especially overseas, consumption of lacquer (usually 80-90 g/sq m) in practice is greatly undervalued. The fact that the said flow of lacquer is usually defined by the well-primed surface and a single-layer coating. In the wild, when the lacquer is applied in most cases treated and ottsiklёvannoy parquet surface, it is necessary to apply at least 2-3 layers of lacquer, with parquet made from softwood (pine, beech), flow on the first layer of varnish, as a rule increases due to the absorption of the lacquer surface flooring. Therefore the actual flow parquet lacquers when applied to Unprimed surface depends on the type and preparation of a parquet surface, and is typically 200-300 g/m

    Summarizing, it should be noted that the right choice of parquet lacquer depends mainly on the purpose of the coating and the financial possibilities of the customer.
    • When carrying out repair and construction work in residential areas can recommend the use of alkyd paints Tina PF-231 or, in the case of the requirements of the enhanced durability - two-component acid-curing coatings (such as MCH-0163). In the latter case, however, it is necessary to take into account the toxicity of the varnish when applied using the prescribed safety measures (respirators, gas masks, etc.).
    • For work in public buildings, offices, administrative offices and other public places should be preferred to the use of domestic and imported uralkidnyh varnishes.
    • In the case of laying in elite houses, theaters, museums, concert halls, coating but the parquet from rare wood, Art parquet it is advisable to recommend the use of urethane and water acrylic or akriluretanovyh varnishes, with the best use of the products of such well-known companies as " Vona " ", Sweden, " Beckers ", Sweden, " ICI ", England, " Lakufa ", Germany, " Kiilto ", Finland and others. It should be emphasized here that the use of aqueous varnish ensures that no solvent odor when applied to wood and color retention, while remaining attached to the surface of varnish slightly yellowish or golden color.
    In conclusion, I would like to note, that in itself the use of high-quality and expensive lacquer does not guarantee a perfect surface quality and durability of the coating during operation. Extremely important is the respect for the right technology of surface preparation and coating of varnish: leveling and cleaning base, gluing the parquet to the base, careful tsiklёvka and polishing of parquet, complete removal of dirt and dust, causing the primer layer and then to the top finishing layers, observance of optimal temperature and humidity mode. It should emphasize the need for thorough mixing of varnish prior to the application, which is especially important when using matte and semi-gloss varnish containing matting agents, as well as compliance with the requirements of finishing varnish to a viscosity which depends both on the type of varnish, and from the tool to the application (brushes, rollers, brushes special applicators, etc.). The easiest way to work with alkyd paints, while other types of coatings require a certain skill and experience. Among the new lacquers, especially imported, should be accustomed and to study their characteristics. This is best known experts in laying the parquet.
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