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　　1. The thermal conductivity of EPS board is small in the range of density of 30 ~ 50kg / m. when the average temperature is 10 ℃ and the density is 20kg / m, the thermal conductivity is 0.033 ~ 0.036w / (m · K). When the density is less than 15kg / m, the thermal conductivity increases sharply with the decrease of density. EPS board with density of 15 ~ 22kg / M is suitable for external insulation.

　　2. When used for external wall and roof insulation, there is generally no obvious moisture problem. However, when one side of EPS board is in high temperature and high humidity environment for a long time, and the other side is in low temperature environment and closed by materials with poor water vapor permeability, or when the roof waterproof layer fails, EPS board may be severely affected by moisture, resulting in severe decline of its insulation function.

　　3. When it is used for insulation of cold storage, air conditioning and other low-temperature pipelines, a vapor barrier must be set on the outer surface of EPS board.

　　4, light weight and specific compressive strength. The tensile strength of Foshan foam factory can support the plaster protection layer by its own strength, and it does not need to pull parts to prevent the formation of thermal bridges.

　　The characteristics of the foam board: acidity derivative more than 2, high temperature resistance, general chemical pipeline 1000 degrees C more, must use this material, the temperature is about 2000 degrees C.

　　The characteristics of foam board: foam board is made of synthetic resin, and has many small holes in the plastic products. It has the advantages of low thermal conductivity, processing and molding. It has been used in construction, mainly for packaging occupation (such as refrigerators), underground buried pipes, and cold storage.

　　The characteristics of the foam board: the main products are polystyrene foam and polyurethane foam, but there are some problems in the field of construction. In recent years, the sandwich panels used for steel wire sandwich panels and color steel sheets have been developed rapidly.

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