Fire protection: The surface material and insulation material of the colorful composite sandwich panel are non-combustible materials, which can fully meet the requirements of fire protection standards.
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Durability: A variety of studies have shown that it has been widely used in foreign countries for more than 40 years. The shelf life of colorful steel plates treated with special coatings is 10-15 years. After that, anti-corrosion coatings are sprayed every 10 years, and the life of the plates can reach more than 35 years.
Aesthetic: The clear lines of the profiled steel plate have as many as dozens of colors, which can meet the needs of any individual building and achieve satisfactory results.
High strength: High-strength steel plate is used as the substrate (tensile strength 5600KG/CM) plus the most advanced design and roll forming, with excellent layout characteristics.
Insulation: The commonly used insulation materials for this composite board are: rock wool, glass fiber cotton, polyethylene, polyurethane, etc., with low thermal conductivity and excellent thermal insulation.
Rock wool board layout
The system layout of rock wool board mainly consists of: bonding layer, insulation layer, plastering layer, veneer layer and accessories.
The bonding layer is constructed to be between the bottom layer and the surface layer. The upper and lower layers are firmly bonded together by a cementitious material, and the filler mainly comes from inorganic materials.
Insulation layer to avoid and reduce the heat loss of the turbine to the environment, the insulation material layer laid on the exterior and exterior of the steam turbine and pipeline, the main filler is rock wool fiber and a certain amount of organic matter, moisture, and binder.
The finish layer should be made of lightweight functional coating such as veneer mortar, decorative mortar or water-based exterior wall paint with excellent breathability, so that the rock wool board retains its light characteristics and adds its aesthetics.
The accessories mainly use various types of coatings. On the one hand, the color of the surface of the rock wool insulation board is added, so that it can be applied to any environment and the coating can play a role of flame retardancy and heat preservation to a certain extent.
Rock wool board insulation material
In the market of thermal insulation materials, energy-saving materials that can be used for building external thermal insulation in terms of apparent density, service temperature, compressive strength, thermal conductivity, water absorption and other functional requirements are: polystyrene foam plastic panels (EPS and XPS) , glass wool , glass wool felt and ultra-light polystyrene granule insulation slurry. A common feature of the above various materials is that there are a large number of closed holes in the material, and their apparent density is small, which is also necessary as a thermal insulation material. 
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CEP Elevator Products ( China ) Co., Ltd. , https://www.zjelevatordoorsystem.com