Magnesium oxysulfide fire insulation board is a kind of fire insulation material which is produced by mechanism or by hand by using magnesium sulfate solution, light burned magnesium oxide, polystyrene particles, modifier and foaming agent. It is suitable for the external wall temperature protection system of civil buildings (especially for high-rise buildings), industrial workshop walls, refrigerators, etc. Magnesium oxysulfide exterior wall insulation board can realize factory production. During the field construction, the board is fixed on the base wall by the method of adhesive paste as the main part and mechanical anchorage as the auxiliary part, and then the joint is filled with insulation materials and sealing materials to form a complete exterior wall insulation system. The main performance indexes are as follows:
Dry density: 70kg / m3 ~ 250kg / m3
Combustion performance: class A1
Thermal conductivity: 0.038w / (m • K) ~ 0.070w / (m • K)
Compressive strength: ≥ 0.5MPa
Magnesium oxysulfide fire insulation board can also be applied to ventilation flue, ventilation pipe, fire isolation belt, magnesium oxysulfide color steel sandwich board.
Compared with other fire insulation materials, magnesium oxysulfide external wall insulation board has the following advantages:
1. Good fire performance
Magnesium oxysulfide outer wall insulation board is mainly inorganic material, belonging to class A1 non combustible material, which can meet the requirements of high fire resistance of outer wall insulation and fire isolation belt. The traditional organic thermal insulation materials with flame retardant can only reach B1 level.
2. Good heat preservation effect
Magnesium oxysulfide external wall insulation board has low thermal conductivity and outstanding insulation effect.
3. Light and high strength
The compressive strength of magnesium oxysulfide outer wall insulation board with a density of 150 kg / m3 is over 0.5MPa, which meets the high requirements for strength in the process of transportation and engineering application.
4. Good aging resistance
The service life of magnesium oxysulfide external insulation board is more than 25 years, which meets the requirements of relevant national regulations.
5. Good frost resistance
After 25 consecutive freeze-thaw tests, the performance reduction rate is less than 5%, which makes the Sox external wall insulation board have good weather resistance and can keep its physical and chemical properties stable in complex weather changes.
6. Good water resistance
The external wall insulation board of magnesium oxysulfide treated by adding waterproof agent has obvious waterproof performance.
7. Low price
Traditional insulation materials (EPS, XPS and polyurethane foam board (PU), the highest level of fire protection reached B1 level, the market selling price reached 600 yuan /m3; the sulfur oxide magnesium exterior insulation board, its fire performance rating is A1 level, the market price is the highest 500 yuan /m3, has obvious price advantage.
8. Energy saving and environmental protection
There is no irritant and harmful gas release, the toxicity of smoke production is safety level (AQ1), and there is no harmful gas and waste discharge in the production process.
9. Good sound insulation
There are a lot of independent bubbles in the insulation board of magnesium oxysulfide outer wall, and the sound absorption capacity is 5-7 times of that of ordinary concrete.
