Plasterboard physical attributes

                                                      Plasterboard physical attributes

Gypsum board is a kind of material made of building gypsum. The utility model has the advantages of light weight, high strength, thin thickness and convenient processing
And building materials with good performance in sound insulation, heat insulation and fire protection, etc., which are one of the new lightweight panels that are currently being developed. Gypsum board has been widely used in internal partitions, wall cladding (instead of wall plastering), ceilings, sound-absorbing boards, ground base plates and various decorative boards of various buildings such as residential buildings, office buildings, shops, hotels and industrial plants.
Gypsum board (divided into ordinary paper gypsum board (commonly used), fiber gypsum board and gypsum decorative board) (explanation) is made by taking gypsum as the main material, adding fiber, adhesive and modifier, mixing, pressing and drying. It has the characteristics of fire prevention, sound insulation, heat insulation, light weight, high strength, small shrinkage, good stability, no aging, anti moth, and can be constructed by nailing, sawing, planing, gluing, etc. At present, the gypsum boards produced in China mainly include: paper gypsum board, decorative gypsum board, gypsum hollow strip board, fiber gypsum board, gypsum sound-absorbing board, positioning point gypsum board, etc. (l) Gypsum board paper. Paper faced gypsum board is a kind of light board with gypsum slurry as the core and paper as the cover on both sides. Paper faced gypsum board is light in texture, high in strength, fireproof, mothproof and easy to process. Ordinary paper faced gypsum board is used for interior wall, partition wall and ceiling. The water-resistant paper faced gypsum board with fireproof treatment can be used for the wall surface of rooms with high humidity, such as the lining board of ceramic tile, metal plate and plastic faced brick wall in toilets, kitchens and bathrooms. (2) Decorative gypsum board. Decorative gypsum board is a board with a variety of patterns and decorations made of building gypsum as the main raw material and a small amount of fiber materials, such as gypsum printing board, perforated ceiling board, gypsum relief ceiling board, paper gypsum decorative board, etc. It is a new type of interior decoration material, which is suitable for medium and high-grade decoration. It is light, fireproof, moisture-proof, easy to process, simple to install and so on. In particular, the surface of the new resin imitation decorative waterproof gypsum board is covered with resin, and the decorative imitation pattern is vivid, novel and generous. The board has high strength, pollution resistance and easy cleaning. It can be used to decorate the wall, make wall protection boards and skirting boards, and is an ideal material to replace natural stone and terrazzo. (3) Gypsum hollow slats. Gypsum hollow board is a kind of hollow board made of building gypsum as the main raw material, mixed with an appropriate amount of light filler or fiber material. This kind of board does not use paper and adhesive, and does not use keel during installation. It is a kind of light board with rapid development. It is mainly used for interior wall and partition wall. (4) Fiber gypsum board. The fiber gypsum board is made of building gypsum as the main raw material and an appropriate amount of fiber reinforced materials. The bending strength of this kind of board is higher than that of gypsum board. It can be used for interior wall and partition wall, and can also replace wood to make furniture. In addition to the traditional gypsum board, there are also new products increasing, such as gypsum sound-absorbing board, fire-resistant board, thermal insulation board and gypsum composite board. The specifications of gypsum board are also developing towards high thickness and large size. (5) Plant straw gypsum board. Different from ordinary paper faced gypsum board, it uses a large number of plant straw to make full use of local waste, which not only solves the environmental protection problem, but also increases the economic income of farmers, reduces the weight of gypsum board, reduces the transportation cost, and reduces the consumption of coal and electricity by 30%-45%, which is fully in line with the relevant national industrial policies. (6) Positioning point gypsum board the second generation of gypsum board - Bayer positioning point gypsum board this product is a new generation of patented gypsum board product successfully developed by Bayer due to the actual needs of the project and after years of painstaking research, which conforms to the national construction specifications. This product is refined from Bayer's proprietary high-grade white wood pulp face protection paper, high-quality gypsum and other raw and auxiliary materials. The surface of the product is whiter. According to the requirements of the national construction specifications, accurate construction and installation positioning points are preset on the construction surface of the gypsum board to make the project construction better and faster. In addition, the use of gypsum products is also expanding. In addition to being used as base lining, gypsum products are also used as surface decoration materials, and even as floor tiles, exterior wall baseplates and wall core materials. Yan Su function
① Sound insulation. The sound insulation effect of the double-layer separated sound insulation wall composed of thin plates and the double-layer sound insulation wall composed of hollow strips is about equivalent to the brick wall with a thickness of 24 cm, and the sound insulation index can reach 40 ~ 50 dB. ② Fire protection. Gypsum board is a non combustible material with certain fire resistance, and some can be used as the fire protection layer of steel structure. ③ Strength. When the lateral load of the wall is 250 PA, the maximum lateral deformation of the wall shall not be greater than 1/240 of the wall height. ④ Humidity regulation. When the humidity in the air is greater than its own moisture content, the gypsum board can absorb the moisture in the air; On the contrary, the gypsum board can release the moisture in the board, which can regulate the humidity in the indoor air.
main performance 
(1) Low production energy consumption. The energy consumption per unit production of hydrated gypsum, the binder used in the production of gypsum board, is 78% lower than that of cement.
(2) It is light and heat-insulating. It uses gypsum board as partition wall, and its weight is only 1/3 1/4 of that of brick wall. At the same time, due to the porous structure of gypsum board, its thermal conductivity is 0.30, which is superior to brick (0.43) and concrete (1.63).
(3) It has excellent fire resistance. As gypsum will release compound water when heated, its fire resistance limit can reach more than 2H.
(4) The decorative function is good, the surface of gypsum board is flat, and the boards can be firmly bonded together through cement to form a seamless structure, with good architectural decorative effect.
(5) It has good constructability. Gypsum board can be nailed, sawn, glued and easily constructed. Using it for decoration can get rid of the traditional wet operation and greatly improve the construction efficiency.
(6) Comfortable living function. Because gypsum board has unique "breathing" performance, it has the ability to adjust indoor humidity and make living comfortable.
(7) High productivity. It is conducive to large-scale production. Among all kinds of building boards, gypsum board has the highest production efficiency and is convenient for large-scale production.
(8) Low investment. Compared with fiber gypsum board, cement foam board and gypsum board, the production equipment of gypsum board can realize continuous mechanized production, with very high equipment utilization rate and less equipment investment.