Waterproof gypsum board
Waterproof gypsum board
Waterproof gypsum board is to show the SLATE is according to the American ASTM standard make waterproof test, its bibulous rate is 5%, which can be used to the humidity larger area, such as toilet, bath room and kitchen, the plate is in the gypsum core material to join quantitative waterproofing agent, make gesso itself have certain waterproof performance. In addition, the paper also use plasterboard waterproof processing, so it is a good plate has more extensive USES. But the board cannot be directly exposed to the damp environment, also cannot directly into the water soak for a long time.
Introduction to the
The board core and protective paper have undergone waterproof treatment. According to the requirements of the national standard, the paper surface and board core of water-resistant gypsum board must meet certain waterproof requirements (the surface water absorption shall not be greater than 160g, and the water absorption shall not exceed 10%). Water resistant paper faced gypsum board is suitable for places where the continuous relative humidity does not exceed 95%, such as toilet, kitchen, bathroom, etc.
Gypsum board is mainly used for engineering or home decoration. Because of its good toughness (suitable for special-shaped roof) and relatively cheap price, it has always been the preferred product of the majority of decoration masters. Secondly, gypsum board itself is a secondary crystallization product, in which the water crystallization can effectively absorb heat, and the fire prevention effect is relatively significant. In addition, due to the use of foaming agent, voids are properly arranged in the gypsum, which has the effect of sound insulation and absorption. Moisture resistant series is that the paper surface of gypsum board has been moisture-proof treated. The water-resistant gypsum board is a board core, and the gypsum has also been treated with water-resistant treatment. The damp proof plate is mainly used in the basement or the place with high relative air humidity and high construction requirements. Water resistant gypsum board is widely used in toilet or kitchen. Of course, there are many fireproof and waterproof materials on the market, such as calcium silicate board and FC Board. Glass magnesium board is fire-proof and moisture-resistant. However, because its own material characteristics limit their scope of use, it can not replace the dominant position of gypsum board for the time being.
Waterproof principle
Gypsum core and protective paper are moisture-proof treated and silicone oil is added. The moisture-proof treatment principle is the coating principle, and the silicone oil wraps the gypsum molecules.
characteristic
It has high waterproof performance, with surface water absorption ≤ 160g / m2 and water absorption of about 5%.
purpose
It is used for space decoration with high environmental humidity, such as toilet, bathroom and kitchen.
classification
Ordinary waterproof gypsum board is a new product developed on the basis of traditional gypsum board. It not only has all the advantages of gypsum board, but also adds some additives in the core of gypsum board to make the fire resistance time longer, so as to block the spread of flame and win valuable time for escape.
Product introduction
Gypsum board is a light building sheet made of natural gypsum and protective paper as the main raw materials, mixed with an appropriate amount of fiber, starch, coagulant, foaming agent and water. In terms of performance, it has the following characteristics:
Low energy and high efficiency
The energy consumption of producing the same unit of paper gypsum board is 78% less than that of cement. It has the advantages of less investment, large production capacity, simple process and convenient for large-scale production.
light
Using paper gypsum board as partition wall, the weight is only 1 / 15 of brick wall and 1 / 10 of block wall with the same thickness, which is conducive to structural earthquake resistance and can effectively reduce the cost of foundation and main structure.
Thermal insulation
About 60% of the gypsum board core is micro pores. Because the thermal conductivity of air is very small, it has good lightweight thermal insulation performance.
Fire performance
The gypsum core itself is non combustible, and will absorb a lot of heat in the process of releasing combined water in case of fire, delaying the rise of ambient temperature. Therefore, the paper gypsum board has good fire and flame resistance. Tested by the National Fire Prevention testing center, the fire resistance limit of gypsum board partition wall can reach 4 hours.
Sound insulation performance
The single-layer wall composed of single lightweight materials, such as aerated concrete and expanded perlite board, can meet the requirements of sound insulation only when its thickness is very large, while the gypsum board partition wall has a unique cavity structure and good sound insulation performance.
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