Sheet of glass

Glass-sheet - a sheet finishing material, which is a substitute products of drywall. The main components of this material are: magnesium oxide (MgO), magnesium chloride (MgCl2, part of the bischofite), perlite (SiO2, volcanic glass, this material is used as sound insulation material), chips (sawdust) water, fiberglass, polypropylene fabric. Among the basic properties of magnesium observed flexibility, strength, fire resistance and moisture resistance. Furthermore, it is environmentally friendly, as it contains no hazardous substances and asbestos, do not allocate toxic substances, even when heated. According to experts, the material really has all the characteristics declared in promotional articles, but has several disadvantages. Firstly, it is more fragile than gypsum fiber board (gypsum plate). Moreover, Chinese people produce lists of varying quality. The main feature here is the density of the sheet, or the content of magnesite (density is easily calculated by dividing the mass of the glass-magnesite sheet to its volume). currently on the market are two types of glass-magnesium sheet: 1 Class (analog, and GCRs GVLv) - density of 0.7 g/cm3 and below to 0.95 g / cm3; "Premium" - a density of 0.95 g/cm3. The lower the density of the material, the more loose, more absorbs moisture, breaks easily as when transported in pallets, and when carrying by hand. It is difficult to mount. Moreover, there are cases when the sheeting under its own weight is forced through the head screws and fell from the ceiling. This material has a very strong adhesion, but also absorbs a lot of filler (normally it should be putty in 3-4 layers). In this case, despite the low price of magnesium, increased costs associated materials, plus get a lot of battle of the sheet. At very high densities (so-called "premium") material loses its adhesion, less bending, it is not glued decorative materials. Furthermore, it is quite moody when mounting: mount screws require pre-countersink the holes, otherwise the material begins to crumble. sheet of glass has many applications in both domestic and external decoration. The specialists say that the facade is better to use magnesium species "Premium". For the interior the best option are sheets with a density of 0.75-0.85 g/cm3. They have good adhesion and density sufficient for normal assembly and transport. Moreover, such lists have a smooth surface and appearance, are flexible enough (for lining curved structures). To increase the strength of (eg, sex) sheets are put in two layers perpendicular to each other. With such material it is convenient to operate, it is easily cut with a simple penknife. Currently, the glass-magnesia sheet is only 25-30 plants in China (according to some sources, also in Korea) and is widely used within the country. World roar of the material practically does not exist: in addition to Russian, Chinese magnesium export to Korea and some other Asian countries. However, interest in the material world there is still (for example, one Russian company has supplied material in Kyrgyzstan and negotiated the delivery to Israel, Egypt, UAE and Qatar). In Russia, magnesium appeared a few years ago. Currently, the Russian market is fully guaranteed supplies from China and Korea. According to experts, the material has good prospects in Russia, but there is also several obstacles to its wider dissemination. First of all, this is due to product quality. Because of recent interest in magnesium has increased dramatically, many companies operating in the market, began to import products into Russia is very poor quality. As a result, the reputation material has been eroded. Now, many refuse to work with him, thinking that the whole magnesium as bad as the one they bought on the cheap. Own production of glass sheets in Russia yet. However, it is likely only a matter of time. According to preliminary analysis, our country has all the conditions for this, namely the opportunity to work on local raw materials. It should be noted that at the moment, there are several problems associated with the opening production of magnesium in Russia: first and foremost is the cost of domestic raw materials and features of the technology. In general, the production of magnesium does not require large investment and has a relatively simple technology (similar to the production of gypsum board). Estimated investment of around 2-3 million rubles., recoupment - 1-2 years.