Selection of rock wool insulation board
Rock wool board is an indispensable material for thermal insulation, fire prevention and sound insulation in modern buildings. It is widely used for thermal insulation, sound insulation and fire prevention of industrial equipment, buildings and ships. In the process of producing rock wool board, different additives can be added according to the actual use to achieve a specific effect. Let's take a look at the relevant knowledge of rock wool insulation board together.
Application of rock wool insulation board
It is suitable for thermal insulation and heat insulation of pipelines in electric power, petroleum, metallurgy and shipbuilding industries, especially for the construction of small straight pipes. The waterproof rock wool tube has the special functions of moisture proof, temperature discharge, and water repellency, and is particularly suitable for use in rainy and humid environments. The moisture absorption rate is less than 5%, and the water repellency rate is more than 98%. In the production of waterproof rock wool board, waterproof additives are added to make the product have better moisture-proof and water-repellent properties. It is mainly used in ships and buildings that have certain requirements for moisture-proof and fire prevention. The water-repellent rate of the waterproof rock wool board is greater than 98%, and the moisture absorption rate is less than 5%. Marine rock wool insulation board and hydrophobic rock wool insulation board are added with hydrophobic additives during production, and have good moisture resistance. Marine rock wool board is used for thermal insulation and fire insulation of ships; Hydrophobic rock wool board is used for vehicles, mobile equipment, cold storage projects, air conditioning pipes, and thermal insulation and fire protection in humid environments and applications that have certain requirements for moisture resistance.
Matters needing attention in the construction of rock wool insulation board
1. The facilities and pipelines that need to be insulated should be free of any leakage, the surface should be dry, free of grease, and no rust. Under certain conditions of oranges and citruses, appropriate coatings can be applied to facilitate corrosion protection.
2. In order to achieve the purpose of minimizing heat loss, all joints of the board and the felt must be very tightly jointed. In the case of multi-layer insulation, the cross joints should be staggered to avoid the formation of a thermal bridge, and the cold bridge must be eliminated when keeping cold.
3. Rock wool products should be used for outdoor thermal insulation or in places prone to mechanical wear. Metal or plastic wrapping should be used. Pay attention to the sealing of joints and joints. If necessary, add rubber seals. The overlap of the wrapping layer should not be less than 100mm.
4. For cold insulation, a moisture-proof layer must be added to the cold-preservation surface. When the temperature is particularly low, the rock wool without resin is used for heat insulation. The moisture-proof layer must also be fireproof.
5. When the temperature exceeds 200 ℃, appropriate insulation must be added to the insulation, so that the possible expansion will not change the thickness and bulk density.
6. For the insulation of large-diameter or flat-wall equipment with rock wool products, insulation nails should be added when the temperature exceeds 200 ° C, and the outer protection should be tight (spacing 400mm).
7. When the thermal insulation object is placed vertically and has a considerable height, the thermal insulation layer must have positioning pins or support rings with a spacing of no more than 3 meters to prevent the thermal insulation material from sliding down when there is vibration.
8. Outdoor thermal insulation and cold insulation construction should not be carried out on rainy days, otherwise rainproof measures should be taken.
Selection of rock wool insulation board
1. It should have a low thermal conductivity. Thermal conductivity is an important indicator to measure the performance of rock wool board. The smaller the thermal conductivity, the less energy is transferred through the material, and the better the thermal insulation performance of the thermal insulation rock wool board.
2. It should have a high sound absorption coefficient. The sound absorption effect of the thermal insulation rock wool board mainly depends on the density of the rock wool board in the unit area. The greater the density, the better the sound absorption effect.
3. A good rock wool board should have low hygroscopicity. After most of the thermal insulation materials absorb water, the thermal insulation effect will be significantly reduced because water has a higher thermal conductivity. Therefore, it is recommended that customers choose waterproof rock wool board.
4. A good thermal insulation rock wool board must have high strength to support its own weight.
Summary: The above is the content of the rock wool insulation board introduced to you by the editor. I hope to help you effectively. For more information, please pay attention to this website.
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