External wall insulation decorative board is divided into organic materials, inorganic materials and composite materials according to material characteristics. According to the performance of insulation materials, the price is also varied.
Vacuum insulation board for exterior wall insulation decorative board, thermal conductivity 0.008w/(m k)
The first is obviously a vacuum insulation plate. This is an efficient thermal insulation board made of inorganic fiber core material, high resistance composite film vacuum encapsulation technology and special interface mortar.
Air has a thermal conductivity of about 0.023 w/(M ^ K). To obtain a thermal conductivity lower than that of air, only vacuum is available. Therefore, the thermal conductivity of vacuum insulation is undoubtedly lower than that of existing insulation. The greater advantage is that all types of insulation materials with different properties can be ignored. But the sheet also has a fatal flaw. For example, vacuum is difficult to maintain. If damage occurs, the insulation performance of the sheet will be sharply reduced.
Due to the current construction process, the boards are sewn too much, which leads to a great risk of condensation. In addition, the smoothness of the construction is difficult to control, and the risk of the thin plaster system falling off is great. At present, the manufacturing price of this product is high, the advantage of cost performance is not obvious. If the cost of this product is further reduced, it can be considered to be applied to balcony panels to prevent the use of cold Bridges. The simulation results show that as long as the balcony panel is 500mm wide, it can play the role of insulating the thermal bridge. Therefore, the balcony panel does not need a large area of 3cm thick bonding board, and the vacuum insulation board of 8mm thick is only 500mm wide, which greatly saves the usage.
Aerogel for exterior wall insulation decorative board, thermal conductivity 0.02w/(m k)
Aerogel material has been called the world's lightest solid. Nano silica aerogel as the main material, through the special process composite, has high temperature, low thermal conductivity, low density, high strength, environmental protection, waterproof non-flammable and other excellent performance, is an indispensable high efficiency heat insulation material in metallurgy, chemical industry, national defense, aerospace and other fields.
The product combines thermal insulation and fire resistance, making it a rare material, but it is not widely used in construction engineering in Europe. External wall insulation decorative board manufacturers think that the price of the product is too high, for the main components of the external thermal insulation system to withstand the cold and heat cycle, but also need to withstand more tests, at present there is no engineering examples to prove the reliability of external wall insulation used. According to the national conditions, aerogel materials will become the products in the laboratory for a long time, and it seems impossible to apply in the field of engineering external insulation.
Foam polyurethane panels for exterior insulation decorative panels, thermal conductivity 0.024w/(m k)
The performance of single organic insulation material is better than that of polyurethane insulation material. According to the different process, it is divided into field foamed polyurethane and factory pre-made light foam polyurethane board.
Foam polyurethane board is based on isocyanate cold, polyol (combined polyester or polyol) as the main raw material to add additives of two components, exterior wall insulation decorative board manufacturers that is through the field spraying construction with insulation and waterproof functions of rigid foam material.
Foam polyurethane board has very good integrity and waterproof, very suitable for roof insulation and waterproof, basement wall cover insulation and waterproof, suitable for dry wall insulation, convenient construction operation, more play the role of heat protection. Foam polyurethane board is a derivative product, with the decline of dimensional stability, the relative expansion of polystyrene board is not much different. Some enterprises provided the composite polyurethane A-class plate with double-coated mortar and the inspection report, which barely passed in A period of time and can be used as fire insulation material. If new fire inspection standards are introduced, the material will not be approved.