The external wall insulation system is mainly made of benzene board materials

Huasu Foam Plastic Machinery Factory specializes in the production of EPE foam machine for exterior wall insulation materials. The current heat preservation and energy saving forms of building envelope structure mainly include composite external wall heat preservation and energy saving system and single heat preservation wall energy saving system. The composite external thermal insulation system is to set the thermal insulation layer on the outer wall. The thermal insulation material used is polystyrene foam board products, and the decorative layer is made on the outside of the thermal insulation layer. The simplest decorative layer is paint. If reliable construction measures are taken, tiles or other heavy Decorative materials, such as split blocks, or even hanging stone or metal curtain walls (commonly known as sandwich insulation). In fact, this form is also a form of composite insulation, but the decorative materials used outside the insulation layer are different. The outstanding advantage of this type of thermal insulation is good thermal insulation performance. The combination of light-weight thermal insulation materials and heavy-duty wall materials not only keeps heat and thermal insulation, but also has a wide range of applications, which is almost suitable for various structural forms and walls. At present, the most common method of composite external insulation wall is to paste polystyrene insulation board, which is one of the more mature external insulation technologies. Its process is to paste the cut foam polystyrene board on the external wall with special bonding mortar. The surface is fixed with nylon anchor bolts, then polymer cement mortar is applied to the surface of the insulation board, and alkali-resistant plastic-coated glass fiber mesh cloth is pressed into the surface. Finally, elastic anti-cracking putty and paint are applied to the surface. There are many construction procedures and correct The matching auxiliary materials have strict quality standards, which not only have corresponding standards for insulation materials, but also have strict compatibility requirements between various materials. In the current market where the current market is not standardized, With the use of handicraft operation methods, a slight omission is prone to quality problems. Some systems are greatly affected by factors such as temperature and wind, and it is difficult to ensure the quality of the project. But the common shortcoming of these products is that they are more or less related to oil, and their prices always fluctuate with fluctuations in oil prices. For example, the polystyrene foam sheet, in 2004 only 240-250 yuan per cubic meter, in 2005 has never been lower than 300 yuan (density 18-20kg/m3). Single thermal insulation wall energy-saving system 　　 It cannot be denied that the composite external wall thermal insulation system is a better energy-saving system, but it is susceptible to the above-mentioned problems. Therefore, it is necessary to pay attention to the possibility of using a single material. At present, the more realistic products available in the market are aerated concrete products. It is a building material that has thermal insulation properties and can be used as the main wall. So far, it has more than 40 years of production and application experience in China, and almost all production plants are Throughout the country, many enterprises have already highly industrialized their production, and their product quality is guaranteed.　　Take Beijing as an example. According to the requirement of 65% energy saving for residential buildings, the average heat transfer coefficient of the outer wall is ≤0.60w/m2k for six floors, and 0.45w/m2k for floors below four. According to thermal calculations, if aerated concrete blocks with a dry density of B05 and a thickness of 300mm are used, the heat transfer coefficient is 0.58w/m2k, that is to say, it can meet the 65% energy saving requirement of multi-storey residential buildings in Beijing. With the addition of plastering on the inner and outer layers, the total thickness is about 330mm. At present, the price of aerated blocks in Beijing is 145-160 yuan/m3, while the wall material cost is 44-48 yuan/m2, plus artificial plastering, the cost per square meter will not exceed 75 yuan. If this method is compared with the currently more commonly used 'thin plaster' external insulation system (that is, the method of pasting polystyrene board on the wall), such as the use of KP1 porous brick exterior wall (240mm thick) in multi-story residential buildings, Externally attached ordinary foam polystyrene board, its thickness is 60mm, the heat transfer coefficient is 0.57w/m2.k, which can meet the requirement of 65% energy saving in Beijing area, plus the adhesive layer and plaster layer, the total thickness of the wall Approximately 340mm. The price of KP1 porous brick is 0.37 yuan per block, which is 400 yuan per cubic meter, which is 148 yuan/m3. The price is similar to the current aerated concrete block, but because the brick wall is 240mm thick, the material price is about 35 yuan /m2, but the outer layer should be pasted with 60mm thick insulation material. The comprehensive cost of the insulation layer is about 84 yuan/m2, plus the wall material cost, and the cost is about 120 yuan/m2. Compared with a single aerated concrete material, the latter is 37.5% higher than the former, but the thickness of the former is 10mm less than the latter, and the heat transfer coefficient of the former is 0.01w/m2k better than the latter. The performance is basically that the former is better than the latter. It is an important supplement to the composite external insulation form of benzene board produced by EPE foam machine.
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