1 Overview of Foam Glass With regard to building energy conservation, people have long focused on one-off construction investment, but have not considered comprehensive benefits in the entire process, especially the large amount of energy consumption brought about by heating and cooling. Increasing the thermal insulation performance of a house can effectively reduce energy consumption and save a lot of resources. Building energy efficiency has become an important part of China's sustainable development strategy. Although there are many types of existing insulation materials in China, they are very limited as building thermal insulation materials. From the actual application of existing building insulation materials, there are certain defects. From the perspective of the performance of these materials, there are problems such as high water absorption, low strength, non-fireproof, and the coefficient of expansion is inconsistent with concrete or brick-wall materials. From the actual situation after the thermal insulation construction, the wall cracks and hollowing phenomenon are serious. Since most of the materials are organic, they are easy to age and have a short service life. These not only affect the overall appearance of the wall, but also have maintenance poles. Inconvenient problem. Foamed glass is a kind of cellular honeycomb structure with uniform cellular closed-cell structure, which uses crushed glass as the main raw material, adding an appropriate amount of foaming agent, oxidant, etc., and mixing it into a powder and melting it through a furnace, foaming, and annealing and cooling. Inorganic insulation material, the main characteristics of the foam glass does not burn (non-combustible A-class), does not produce any toxic gases are environmentally friendly products. ) Foam glass insulation performance (thermal conductivity of 0.058W/mK), and not easily affected by other factors, thermal insulation properties of long-term stability. The small expansion coefficient of foam glass is very close to that of daily silicate inorganic building materials, so it is firmly bonded with these materials, and the expansion and contraction are not easy to produce cracks. The foam glass is light (its bulk density is 160180kg/m3), high strength (its compressive strength 0.6MPa, bending strength 0.6MPa, tensile strength 0.26MPa), and it is an ideal building insulation material. The foam glass has low water absorption (volume water absorption is only 0.2%) and low moisture transmission coefficient (water permeability coefficient is 8.8X10-11g/S.Pa.m), and has good moisture barrier and moisture resistance. The parts were placed alternately at -40°C and +150°C for 4 hours, repeated three times in a row, and the surfaces of the test pieces were free from cracks. 1953-), female, general manager of Shanghai Yongli Energy-Saving Wall Material Co., Ltd. Foam glass is an inorganic material, which has stable materials, is not easy to age, and has a long service life. Foam glass has good chemical stability, corrosion resistance and corrosion resistance. The destruction of rodents and insects is particularly suitable for places with special requirements such as museums, concert halls, exhibition halls, and libraries. Foam glass is easy to cut and shape, which brings great convenience to construction on site. The material properties of the insulating foam glass determine its low density, low thermal conductivity, high strength, low water absorption, low moisture permeability coefficient, heat insulation, moisture resistance, non-flammability, corrosion resistance, anti-rodent animal bite, long service life, etc. Features, while having a wide range of use temperature (use temperature is -196 °C 400 °C) and other excellent performance. It is a kind of material that is both warm and cold and suitable for various places. It can be used in alternate environments such as high and low temperature and humidity. In the field of chemical industry has a long history of application, and has a wider range of applications, especially in the cryogenic insulation in the chemical industry is still an irreplaceable product. It is a matter of benefiting the people and the people to let such an insulation material with excellent performance in all aspects be reasonably applied in other fields and to exert its greater social and economic benefits. At present, there are two major types of wall insulation materials: organic insulation materials and inorganic insulation materials. From the perspective of fire performance, the fire resistance of inorganic materials is generally higher than that of organic materials. From the material structure point of view, the lower the density of the material, the greater the porosity, the pores inside the material is a large number of closed micro-holes, the thermal conductivity of the material is generally relatively small. The existing organic and inorganic thermal insulation materials have generally small thermal conductivity and good thermal insulation performance. However, due to the presence of pores in the materials and the generally high water absorption of the materials, it is inevitable to absorb water in a humid environment. However, the thermal conductivity of water (.58W/mK) is much larger than that of static air (0.0233W/mK). Therefore, when the humidity of the environment increases, the equilibrium moisture content of the material increases, and the thermal conductivity of the material will increase. Will increase. Therefore, as a heat insulation material, the moisture absorption rate of the material itself should be as low as possible, and if it is unavoidable, the material should be treated with hydrophobic water or coated with a waterproof material. However, the actual situation is to waterproof the large area of ​​the building insulation application. Dealing with and achieving good results is undoubtedly difficult. In addition, the heat insulation material must also be able to withstand a certain impact load and high strength in the application of building insulation. That is, it has the mechanical strength consistent with the use of the environment; its bonding performance is better, but also have a small shrinkage rate and Environment-friendly durability. In combination with the above conditions, the foamed glass thermal insulation material has achieved a good balance in comprehensive comparison of various properties and has a variety of advantages. However, foam glass as a building insulation material also has its shortcomings, that is, relatively high production costs; large-scale production, the initial investment is relatively large; production process is more complex, and the production increase is relatively slow. This is the biggest obstacle to the promotion of foamed glass in the field of building insulation. There are only less than ten foam glass manufacturing enterprises in the country. The overall output is relatively small compared to the market demand for building insulation. There are not many manufacturers specializing in building foam glass insulation systems. Foam glass for building thermal insulation is made of broken flat glass and bottle glass as raw materials. After being selected for miscellaneous, washed, air-dried, ball-milled into very fine glass powder and added with various accessories, it enters into high-temperature foam furnace. Foam molding, after molding through a number of processes such as demoulding, annealing, cutting, etc., can only be a product. From raw materials to products, the entire production process requires nearly ten hours of processing, the cost of foam glass is high, mainly the high processing costs, raw materials The cost is only a small part of its total cost. 2 Overview of foam glass insulation system Foam glass insulation system is a new type of foam glass insulation board, special adhesive, alkali-resistant glass fiber mesh cloth, special plastering mortar, anti-cracking flexible water-resistant putty and other materials on-site construction molding Insulation system. The thermal insulation system integrates wall insulation, fire prevention, crack resistance, smashing prevention and decoration functions. The system has a wide range of application, simple and reasonable process, and can meet the building energy-saving construction requirements under different climate conditions in most regions of China. Foam glass insulation system combines technical advantages and engineering practices and is technologically advanced. The foam glass insulation used in the system has the characteristics of non-combustion, small shrinkage, non-toxicity, low volumetric water absorption, wide application temperature range, and linear expansion coefficient similar to concrete or brick wall type wall materials. The adhesive materials and trowel materials used in the system are all made of specially modified cement-based polymer materials that provide elasticity and crack resistance to the characteristics of the building. Slurry materials are mixed and mixed on site to ensure the matching of the properties of the materials. The size of the foam glass plate is suitable, and the cutting at the site is convenient and easy to construct. This system has the advantages of preventing wall cracking and hollowing of the wall finish. Applicable to all kinds of exterior walls of civil and industrial buildings for new construction, expansion and reconstruction. The base wall can be a variety of masonry and concrete walls, and the finish layer can be paint or tile. At the same time, the system can also be applied to the energy-saving renovation of existing building walls and special thermal requirements (such as fire barriers, etc.) Building insulation fire protection project. 2.1 Foam Glass Insulation System Construction This system is used for the insulation system of buildings. The system is bonded to the base wall by adhesive fixing, and can also be supplemented with anchor bolts or metal brackets. The system structural design is the use of foam glass as insulation material, and its linear expansion coefficient is basically the same as that of the concrete wall of cement mortar or brick wall. In addition, special adhesives and special mortars are used to match the elastic modulus of each layer. , The materials can disperse and reduce the deformation stress, and through the glass fiber mesh cloth as a reinforcement layer to change the stress transmission direction, so that the system has a good thermal insulation, fire, cracking and other effects. According to the different parts used, the basic structure is divided into: Common type -I: Suitable for basic walls of 6 meters or more and 18 meters or less; Reinforced type -I: Suitable for base walls of 6 meters or less and doors and windows of 18 meters or less Yin and yang corners and other parts; walls and doors and windows openings, yin and yang corners and other parts; enhanced -: suitable for 18 meters above 27 meters below the grass-roots strengthening type -I: for more than 27 meters of grass-roots walls and doors and windows Table 1 Common Type 1 foam slope glass exterior insulation system base wood structure from the u rake system block distress structure shows; The wall breaks each building order... Moquing mortar Zhang - 忤 You t Water meter 3 Reinforced -n Foam glass Exterior protection system Basic structure U body 1 System misfortune + Structure Structure indication Old insulation connection Impulse and M6 Condensate 丨 丨: 墒汴咆 foam glass alkali N/h too seven 丨: water resistance 1y Table 4 enhanced -in foam glass exterior insulation system basic structure m-Hu, å£å±®. strength. Jfjirjif! (QY'iln.n hang “4丨 earn, khir.fv-item i丨 ula戕-m. Water vapor density, g/(m:h) impermeable frame resistance mt. Foam glass insulation system Foam glass is used as a heat-insulating substrate, which is an inorganic hard material, and its linear expansion coefficient is generally 7.2-8.6X10-6 "(mK), which is only 1/101/5 of the organic heat insulating material, and is completely reversible. In actual use, there will be no cracks or deformation due to expansion and contraction, so as long as a reasonably matched protective layer and finish layer are selected, this system can be said to be an insulation system with the same life span as the building. Foam glass insulation system insulation board and the base wall bonding point bonding method, the required coating area is 40% 70% of the plate, so as to effectively ensure the bond strength of the foam glass plate and the wall surface, but also formed a certain The cavity is conducive to the elimination of moisture. In the entire structural design, the foam glass insulation system fully considers the compatibility of various materials in the system and the matching of the elastic modulus change indicators of the adjacent structural layers. The special screed mortar guarantees a certain degree of flexibility in order to release the deformation stress, and Increase the mesh in the reinforced structure and special parts to disperse the deformation stress and prevent cracking. 2.3 Construction Steps for Foam Glass Insulation System Basement Wall Treatment: Clean the wall surface and level the base wall. The bomb control line is linked to the baseline: According to architectural design and technical requirements, horizontal, vertical and other control lines are popped up to control the verticality and flatness of the wall surface. Preparation of special adhesives: According to the requirements of the configuration, the use of special binders for adhesives is a polymer modified cement mortar, is dedicated to foam glass insulation board and the base wall adhesive material paste installation foam glass insulation board : According to the arrangement, the foam glass insulation board is staggered and stitched with a point-bonding method. The insulation board should be pressed in a timely manner after being pasted to ensure that the entire assembly is flat, vertical, and firmly bonded, and finally polished and leveled. Wiping Special Plaster: Apply special mortar to the foam glass insulation layer, the thickness is controlled at 23mm, and two plastering methods are used Foam Glass Special Plaster is a high polymer polymer latex powder, sand and silicon Salted cement, added with anti-cracking fiber dry blended modified mortar, and formulated with a polymer emulsion as the main component of the two-component product, is a special mortar for the foam glass protective layer scratch YL flexible water-resistant putty: batch scraping After the YL flexible water-resistant putty, the sand skin should be polished without leaving a bottom. Finishing Layer Brushing Paint: According to the requirements Brushing Finishing Coating Reinforcement Practices: For the parts that need to be laid out: After scraping the first special pavement mortar, apply a mesh cloth immediately, pay attention to the mesh cloth The lap width is strictly prohibited. When the mortar is slightly dry and hard to touch, scrape two special mortars to completely cover the mesh. For the wall surface above 18 meters above the floor, use nylon anchor bolts for the auxiliary fixing of foam glass. After the foam glass insulation board is firmly bonded, the quantity is generally controlled at 4~7/m2. Note that the anchorage depth is matched with the base wall. . For the auxiliary fixing of the foam glass on the wall surface above 27 meters above the floor height, metal brackets and nylon anchor bolts are used for reinforcement. The mounting metal brackets should be synchronized with the sticky table 5 foam glass thermal insulation system and the foam glass insulation board. According to the design requirements, the metal bracket is fixed on the base wall with expansion bolts. 2.4 Thermal Engineering Calculation and Energy Saving Detection of Foam Glass Insulation System Application Case I: In 2003, Shanghai Real Estate (Group) Co., Ltd. used one of the 3rd floor of a residential area in Shanghai as a test, and used foam glass as the outside. Insulation materials for exterior walls and roof insulation, after completion, have been tested for residential performance by the Residential Laboratory of China Architecture Design and Research Institute (detection time is from August 22 to September 16, 2003). Calculation of the heat transfer coefficient of the external wall: (a) Construction of the external wall of the test building: The test building is a mock-card block model building, and the exterior wall is constructed with concrete die blocks. The thickness of the block is 190 mm. Foam glass insulation layer, internal and external surfaces The surface is coated with cement mortar and the exterior surface is coated with an external wall elastic coating. The total thickness of the wall is 2 70mm. (b) The calculation is based on the total thickness of the screed surface layer is 50mm; 2 The thermal conductivity of the foam glass is taken as = 0.064W/mK ( d) Heat transfer coefficient K According to the data from the Shanghai Housing and Building Design Institute, the concrete modular card block development unit, the wall heat transfer coefficient of the concrete modular wall block (1)=2.88 W/m2.K wall heat transfer coefficient : R. Inner surface heat transfer resistance, for wall surface: Re surface heat exchange resistance, for winter outer wall: Substituting the above conditions into the layer Sd value as abscissa, from left to right are the wall base layer, adhesive layer, Insulation layer, thin finish layer. When using veneer materials with large water vapor permeability, the above problems in the condensation zone affect the promotion and application of rock wool insulation systems in the country. On the one hand, rock wool manufacturers should produce suitable outer walls for use as soon as possible ( Continued to page 67) In early 006, another external wall insulation practice was carried out for the office building, comprehensive building and staff dormitory of a Metal Products Co., Ltd. The test data and conclusions are as follows: According to the Shanghai Construction Standard Specification, Energy Efficiency Testing for Residential Buildings. Commentary uses DeST-e energy evaluation software to determine the use of 3 5mm thick foamed glass exterior insulation to achieve energy-saving requirements. 2.5 Application of Foam Glass Insulation System Evaluation The use of broken glass for the production of new environmentally-friendly building materials foam glass, in line with the requirements of environmental protection, but also in line with the direction of the development of circular economy, and the advantages of foam glass in the traditional thermal insulation material, with a small capacity , High strength, corrosion resistance, good water resistance, low water absorption, low thermal conductivity, etc., applicable to all kinds of places. In the total energy consumption of buildings, the heating and cooling energy consumption accounts for 45 to 50% of the total energy consumption of the entire building. If effective energy-saving measures are taken, in particular, effective thermal insulation treatment of the enclosing structures such as exterior walls and roofs is carried out. Not only can people improve their comfort of living, but they can also save a lot of energy consumption. Foam glass with its excellent performance, suitable for exterior walls, basement insulation, roof insulation. At present, China has made great progress in the application of building insulation materials and research and development work, but there is still a gap between the level of energy efficiency in buildings in developed countries, the application of foam glass in the field of building energy conservation is in its infancy, and there are still many jobs that need scientific research. , Production, design, construction and other units work together to jointly promote the application of foam glass insulation materials in the field of building energy conservation. Foam glass is used for exterior wall thermal insulation. As a wall thermal insulation material, it can effectively reduce the thickness of the wall, reduce the weight of the building structure, and expand the use of the area. It is applied to the insulation of building roofs. Due to the high strength of the roof insulation system and the good waterproof performance, the roof can be used for greening, planting of flowers and plants, or as a roof playground and other functional uses. The rock wool board (strip) of the heat preservation system, on the other hand, shall be checked for the suitability of the rock wool insulation system in various regions, and related indicators shall be formulated for each climate zone in China. Under the current circumstances, some small-scale pilot buildings can also be constructed in some representative areas, and some engineering examples can be accumulated to track the safety of the system and the wall heat transfer coefficient. ABS Ceiling Fan
The Ceiling Fan is beautiful in appearance, equipped with durable fan blades and lighting of different colors and styles, and has functions such as lighting, cooling, and decoration.There are much more Led Ceiling Fan styles in our website,such as DC Ceiling Fan ,Iron ceiling fan,Wooden Blades Ceiling Fan With Bulbs,Retractable Ceiling Fan Light,Simple Ceiling Fan Lamp,and best decoration Plywood Led Ceiling Fan.And there are more items are not showing on the website,please feel free to contact us directly for more information.
Led Ceiling Fan,Ceiling Fan,Ceiling Fan Abs Blade,Ceiling Fan With Remote Control,Decorative Ceiling Fan JIANGMEN ESCLIGHTING TECHNOLOGY LIMITED , https://www.esclightingfan.com