Broadly speaking, the plate insulation material is widely used in areas and areas, and can be used in exterior insulation projects or in exterior insulation projects. The main body of the insulation material of the sheet insulation material may be a foamed polystyrene board, an extruded polystyrene board, a rock wool board, a glass wool board and the like. The board insulation material can be divided into a single insulation material and a system insulation material. The following problems should be noted in the application process: A single thermal insulation material is the main body of thermal insulation engineering application, and other materials need to be used in the process of use. Such as: foamed polystyrene board, extruded polystyrene board, rock wool board, glass wool board, etc., test the following test contents before use: 1. Thermal conductivity (W/m?K): This technical index is a key indicator of the thermal insulation effect of the project. Generally speaking, the laboratory test is tested when the plate is dried to constant weight, and the application of the material is It is used under conditions of a certain humidity in the air. Therefore, it must be multiplied by a certain factor when using it; or, the material can be directly adjusted to the conditions of use. 2. Apparent density (Kg/m3): The apparent density of the material affects its thermal conductivity to a certain extent. Materials with unacceptable apparent density will directly lead to a decrease in physical properties such as strength and dimensional stability. 3. Compressive strength (MPa): refers to the compressive stress of the test piece under 10% deformation. It is related to the durability and impact resistance of the finish system. 4. Dimensional change rate (mm): A material with a large dimensional change rate will cause cracking of the surface layer of the system. 5, water vapor permeability coefficient [ng / (Pa?ms)]: This performance determines the performance of water vapor transmission, to some extent determines the condensation of the wall. 6, oxygen index: need flame retardant type, otherwise the fire can not meet the standard.
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