Silicone sealant

The sealant is applied to internal and external works to seal the cracks, glass elements, which require resistance to various atmospheric and chemical influences, as well as where the compound structures or parts may be displaced under the influence of thermal or mechanical influences. For silicone sealants are characteristic features: resistance to ultraviolet radiation, resistance to all weather conditions, and virtually any hostile environment, excellent adhesion to most types of building materials, even without using primers, excellent accommodation movement (at least 20%), increased thermal stability and frost resistance - health (retain the elastic-elastic properties) at temperatures ranging from -50 to +200 ° C wide temperature range application (applied to the surface from -30 ° C to +60 ° C). Silicone sealants are complex composition of the following general composition: A Framework - silicone rubber (silicone polymer, as a rule, dimethylpolysiloxane with terminal hydroxyl groups), power (serving to increase the strength characteristics and to provide thixotropic properties absence stekaemosti on vertical surfaces), filler (performing a number of secondary functions), color (if necessary); vulcanizing components (for the conversion of the original paste-like consistency of the sealant rubber-like material under the influence of air moisture) adhesion promoters (providing durable sealant in permanent contact with the surface); silicone softener (raising the elastic properties of the sealant). Despite the fact that the basis of silicones for various purposes is the same, the properties of these sealing materials depend on the properties of individual components. Based on the fact that silicone sealants must contain a vulcanizing components are further subdivided further into two types: acid ("vinegar" - during the vulcanization of acetic acid is formed, it is easy to identify by the smell of vinegar), neutral (oxide, amide, alcohol). Sealants both subspecies have their advantages and disadvantages. Thus, the acidic silicone sealants are cheaper than neutral, but they in no way be used for sealing of surfaces and materials that can react with acetic acid to form soluble salts (tsementsoderzhaschie materials, aluminum, marble and others). In this respect, neutral silicone sealants are more versatile, because this limitation, they do not, but they are more expensive. Additionally, returning to the issue of "universality", we should note another feature of sealants. In order to carry out their duties, they must have good adhesion ("adhesion") to the sealable surfaces. All silicone sealants combines them chemical basis - silicone. And despite all of them are very similar. Main - silicone sealants are 15-20 years old and are not afraid of water. True, they are not amenable to staining. But then it probably is not in them, and in the paint, which can not stretch as far as is given to silicone. But to paint them in general and do not, they are already represented in the extensive range of colors. You can also buy a clear sealer, which can, for example, to patch cracks in the glass. Silicone sealants for plumbing work is used: to seal the fittings and kitchen equipment for work, where resistance to the formation of mold. Consumption of silicone sealants, depending on the amount of cracks and the thickness of the layer. If the gap is very deep, in order to save the sealant can first lay inside a packing cord and the rest to fill the void silicate. In the production of silicone sealants, as indeed, acrylic, a world leader is a firm "Dow Corning" (Dow Corning), whose products are of high quality. Multipurpose silicone sealants are used: for sealing of connecting and moving the outer seams, and for sealing around the perimeter of window and door frames, with glazed verandas, etc., during assembly and sealing all types of plastic frames and panels. Also enjoy world-famous sealants Dutch company Bayer Silikons "(GE Bayer Silicones), we have known under the trade name Silicone IVF. Due to the domestic packaging, these sealants is quite affordable. And the packaging is possible in traditional print cartridges (310 ml), and in the professional package, the file packages ("sausages") on the 300 and 600 ml. Polyurethane foam is used: for fastening and sealing of door and window frames, finishing the brickwork, filling voids in the piping through the walls to fill cracks, holes and other cavities. In addition to acrylates and silicates for working indoors, in particular for sealing joints in the bathroom and the kitchen is a new product from the U.S. - Polymer supergermetik - a special formula (EL - 170 "Kitchen & Bath"). They say he does not lose their properties sealed for 50 years. And another thing: Unlike some of sealants, it can be painted.