The gypsum board is made of natural gypsum and face paper, and is made of light fiber, starch, coagulant, foaming agent and water. As a new building material, gypsum board has the following characteristics in performance:
(1) Low production energy consumption and high production efficiency: The energy consumption of the gypsum board of the same unit is 78% lower than that of the cement. Moreover, the investment is small, the production capacity is large, the process is simple, and it is convenient for mass production.
(2) Lightweight: use paper gypsum board as partition wall, the weight is only 1/15 of the brick wall of the same thickness, 1/10 of the block wall, which is beneficial to the structure earthquake resistance and can effectively reduce the cost of the foundation and structure. .
(3) Thermal insulation: About 60% of the core of gypsum board is a tiny air hole. Because of the small thermal conductivity of air, it has good light insulation performance.
(4) Good fireproof performance: Since the gypsum core itself is not flammable, and in the process of releasing the compounded water, it will absorb a large amount of heat and delay the rise of the surrounding ambient temperature. Therefore, the gypsum board has good fire retardant performance. Tested by the National Fire Detection Center, the fire resistance limit of the plasterboard partition wall can reach 4 hours.
(5) Good sound insulation performance: a single layer of wall made of a single lightweight material, such as aerated concrete or expanded perlite board, can meet the requirements of sound insulation when the thickness is large, and the plasterboard partition is unique. The cavity structure has good sound insulation performance.
(6) Good decorative function: the surface of the gypsum board is flat, and the board and the board are treated by seams to form a seamless surface, and the surface can be directly decorated.
(7) Convenient processing and good workability: the gypsum board has the characteristics of nailing, planing, sawing and sticking. It is used for interior decoration and can achieve ideal decorative effect. Cutting the gypsum board is very convenient, and using it as a decorative material can greatly improve the construction efficiency.
(8) Comfortable living function: Since the gypsum board has a large porosity and a proper pore structure distribution, it has high gas permeability. When the indoor humidity is high, it can absorb moisture, and when the air is dry, a part of the water can be released, so that the indoor humidity can be adjusted. The foreign function of the gypsum board is called "breathing" function. It is precisely because of the unique "breathing" performance of the gypsum board that the indoor humidity can be adjusted within a certain range to make the living conditions more comfortable.
(9) Green and environmental protection: The gypsum board is made of natural gypsum and paper as raw materials, and it does not contain asbestos harmful to human body (most of the calcium silicate board and cement fiber board use asbestos as the reinforcing material of the board).
(10) Space saving: the paper gypsum board is used as the wall body, the wall thickness can be as small as 74mm, and the sound insulation and fireproof performance of the wall can be guaranteed.
Because the gypsum board has the advantages of light weight, fireproof, sound insulation, heat preservation, heat insulation, good processability (planable, nailable, sawable), convenient construction, good detachable performance, and increased use area, It is widely used in various industrial buildings and civil buildings, especially in high-rise buildings as interior wall materials and decoration materials. Such as: for non-bearing walls in the frame structure, indoor veneers, ceilings, etc.
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