Gypsum board (divided into ordinary paper-faced gypsum board (commonly used), fiber gypsum board, gypsum decorative board "explanation") it is gypsum as the main material, adding fibers, adhesives, modifiers, by mixing and pressing, drying and become. It has the characteristics of fireproof, sound insulation, heat insulation, light weight, high strength, small shrinkage rate and good stability, no aging, anti-insect, can be nailed, sawed, planed, glued and other methods of construction.
Edit the classification of gypsum board
China's current production of gypsum board are: paper gypsum board, decorative gypsum board, gypsum hollow board, fiber gypsum board, gypsum sound-absorbing boards, gypsum boards, positioning points, and so on. (l) paper-faced gypsum board paper. Paper gypsum board is a lightweight board with gypsum slurry as the core and paper as the surface protection on both sides. Paper gypsum board light weight, high strength, fire, moth, easy to process. Ordinary paper-faced gypsum board is used for interior walls, partition walls and suspended ceilings. After fire treatment of water-resistant paper-faced gypsum board can be used for the humidity of the room walls, such as toilets, kitchens, bathrooms and other tiles, metal panels, plastic-faced brick wall liner. (2) Decorative plasterboard. Decorative gypsum board is made of construction gypsum as the main raw material, mixed with a small amount of fiber materials made of a variety of patterns, flowers and decorative panels, such as gypsum printing board, perforated ceiling panels, gypsum relief ceiling panels, paper gypsum decorative panels and so on. It is a new type of indoor decoration material, suitable for medium and high-grade decoration, with lightweight, fireproof, moisture-proof, easy to process, easy to install and so on. Especially the new resin imitation decorative waterproof gypsum board board surface covered with resin, decorative imitation pattern, its tone pattern realistic, novel and generous, high strength, pollution resistance, easy to clean, can be used for decorative wall, do siding and skirting board, etc., is the ideal material to replace natural stone and terrazzo. (3) Gypsum hollow board. Gypsum hollow board is the main raw material of construction gypsum, mixed with the appropriate amount of lightweight filler or fiber materials processed into a hollow plate. This kind of board does not use paper and binder, installation without keel, is a relatively fast development of a lightweight panels. Mainly used for interior walls and partition walls. (4) Fiber gypsum board. Fiber gypsum board is made of construction gypsum as the main raw material, and mixed with an appropriate amount of fiber reinforcing materials. The bending strength of this board is higher than that of paper-faced gypsum board, which can be used for interior walls and partition walls, and can also replace wood to make furniture. In addition to the traditional gypsum board, there are new products increasing, such as gypsum sound-absorbing boards, fire-resistant boards, insulation boards and gypsum composite boards. The specification of gypsum board also develops in the direction of high thickness and large size. (5) Plant straw paper gypsum board. Different from ordinary paper-faced gypsum board, it makes full use of local waste by using a large amount of plant straw, which not only solves the environmental protection problem but also increases the economic income of farmers, but also reduces the weight of gypsum board, lowers the cost of transportation, and at the same time reduces the consumption of coal and electricity by 30-45%, which is in full compliance with the relevant national industrial policies. (6) Positioning point gypsum board The 2nd generation of gypsum board - Bayer Positioning point gypsum board This product is a new generation of patented gypsum board products developed by Bayer after many years of research in line with the national construction standard due to the actual demand of the project. This product is refined by adopting Bayer's proprietary high-grade white wood pulp surface protection paper and high-quality gypsum and other raw and auxiliary materials, with a whiter surface, and according to the requirements of the national construction specification, precise construction and installation positioning points are set in advance on the construction surface of gypsum boards, so as to make the construction of the project good and fast. In addition, the use of gypsum products is also broadening, in addition to the base lining, but also used as surface decorative materials, and even used as floor tiles, exterior wall substrate and wall core materials. Yansu
Edit Gypsum board specifications
Length 1800, 2100, 2400, 2700, 3000, 3300, 3600, 1800
Width 900, 1200
Thickness 9.5, 12.0, 15.0, 18.0, 21.0, 25.0. Implementation of the foreign standards are still available. 12.7 and 15.9.
Note: According to the requirements of users, we can produce other sizes of plates.
Edit this section of China's existing part of the gypsum board enterprises and brands
Local brands are: Loeffler Building Materials (Shenyang) Limited brand: Loeffler, Dixiang Tai'an City, Kang Yijia building materials limited liability company's brands: Kang Yijia, Shuaike, Hulk, Huaxin, eighteen plates, etc. Beixin building materials, Beixin building materials under the Taishan Gypsum Co. Ltd. brands: Dragon, Taishan, Taishan King, Taishan West Lake, etc. At the same time, there are domestic Bayer, Jia and Yifa Wanjia gypsum brands such as foreign brands: Saint-Gobain: Jieke Knauf: Knauf Lafarge: Lafarge
Edit this section of the ceiling installation process
1, in the formal construction, the workers first to use the level tube to measure the wall popping the level of the ink line or not, only to ensure that the foundation of the line is indeed level, so as to not let the later installation of the ceiling tilt or tilting. Later installation of the ceiling to produce tilt or the existence of height difference. 2, gypsum board ceiling needs to be fixed in a solid wooden keel frame, so before the keel materials carefully selected has become an essential step, we recommend that we try to choose a better grip on the pine material. 3, because the keel is wooden, so we must pay attention to fire prevention, the standard practice is now the keel surface uniformly coated with fire-resistant paint, and so the whole keel are white, and then nailed to the wall, which ensures that its contact with the wall is also brushed to the fire-resistant paint. 4, the keel surface after fire treatment can begin to combine, the workers will use a nail gun in the combination of two keel diagonal 45 degrees for fixing. At this time you need to master the strength, to prevent cracks in the keel. 5, nailed keel frame will need to fix the frame on the wall, it is necessary to double-check whether the spacing between the frame is not greater than 300mm in order to have enough fastness (but also according to the site to install the band lights, downlights, spotlights, the distance between the consideration, or the installation will have some small trouble). Otherwise the plasterboard on it is easy to sink and break. 6, the next step is to formally on the gypsum board, it is best to let the workers use stainless steel drywall nails to fix the gypsum board, so that the nails will not rust, and in the future can ensure that the gypsum board for a long time beautiful. 7, gypsum board on the nail eye will usually use rust-proof nail eye putty to deal with, in fact, with cement to fill the nail eye is a more cost-effective way. And the effect of the treatment is not worse than nail eye putty. 8, the gap between the two pieces of gypsum board must be dealt with in the next step, otherwise the future will produce obvious cracks. General workers will use 901 glue and gypsum powder mixed with caulking. 9, with gypsum powder to fill the gaps after the best again with anti-crack tape on the surface, can prevent thermal expansion and contraction caused by the top surface cracking. When pasting, we should pay attention to remove air bubbles with a scraper while pasting, so that the tape and gypsum board thoroughly and tightly combined. 10, for modeling more special ceiling, the later processing is very important. Such as round, wavy ceiling need experienced master with a small spatula slowly repair out, this is the whole ceiling molding the most important process. 11, repair the basic shape, we must use sandpaper to sand the edge of the ceiling again, the edges of the edges and burrs are removed. Handling must be patient and careful, otherwise it will affect the aesthetics very much later. 12, generally after a few days of hard work, the ceiling of the home can be completed. As long as you grasp the above several key links in the construction, you can ensure the beauty and safety of gypsum board ceiling.
Edit this section of the production line process introduction
Batching part: Preparation: Modified starch, retarder, pulp, water reducer, water by quantitative measurement into the hydraulic pulper stirred into the raw material slurry, and then pumped into the slurry reserve tank for spare parts; foaming agent and water in proportion to the foaming agent preparation tank stirring, pumped into the foaming agent reserve tank (with a heating device to maintain more than 35 ° C) for spare parts Dosing: the slurry in the slurry reserve tank is pumped into the mixer by metering pump, the blowing agent is foamed into the mixer by dynamic foaming device, the coagulant and gypsum powder are measured into the mixer by automatic measuring belt weigher, and then all the main and auxiliary materials are mixed into qualified gypsum slurry in the mixer. Explanation:All the main and auxiliary materials are included in the automatic control system, with the different speed of the production line automatically adjusted to adapt to the requirements of large-scale, high-speed;
Edit this section of the gypsum board partitions
With gypsum board or hollow gypsum slats composed of lightweight partition wall, can be used to separate the interior space, has a simple structure, easy to process and install the characteristics of the end of the 19th century, the countries began to use gypsum board as an internal partition wall. At the end of the 19th century, countries began to use gypsum panels to make internal partition walls, is a kind of lightweight building materials with a large production volume and wider application in the international arena. This kind of partition wall usually adopts steel and wooden keel as skeleton, and can be used according to the requirements, with other materials (such as mineral wool board, waterproof paint and decorative surface materials, etc.) composed of sound insulation, waterproof or advanced decoration requirements of the partition wall.In the 1970s, China began to paper gypsum sheet and hollow gypsum board for testing and production, and in the application of architectural engineering.
Types
Currently, there are three kinds of gypsum boards in China: paper-faced gypsum board, fiber gypsum board and hollow gypsum lath. ①Paper gypsum board is made of gypsum as the core material, both sides of the paper reinforced lightweight thin board; ②Fiber gypsum board is made of gypsum as the cementitious material, with a variety of organic or inorganic fibers (such as paper fibers, grass fibers, glass fibers, etc.) as a reinforcing material and made of lightweight thin boards, thickness of 8 to 12 mm, weighing 7 to 9 kg/m2; ③Hollow gypsum laths, gypsum as the cementitious material, mixed with various kinds of lightweight materials or reinforcing fibers (such as paper fibers, grass fibers, glass fibers, etc.) as a reinforcing material. Hollow partition board, also gypsum as cementitious material, mixed with a variety of lightweight materials or reinforcing fibers (such as expanded vermiculite, expanded perlite, glass fiber, etc.) made of 60 ~ 100 mm thick, wall weight 40 ~ 60 kg / m 2. Paper and fiber gypsum sheet need to be composed of steel, wood, gypsum keel for the skeleton of the partition wall. Hollow gypsum lath because of its own rigidity, without the skeleton can be composed of partition walls. Gypsum board is easy to cut and process, but it is also easy to be damaged, so it needs special machine tools during transportation and installation. During construction and installation, in order to ensure that the joints do not crack, attention should be paid to the arrangement of the position of the board joints, and the joints should be properly handled with special cementing materials.
Function
①Sound insulation. With a thin plate composed of double separation of sound insulation wall and hollow slats composed of double sound insulation wall, the sound insulation effect is equivalent to about 24 centimeters thick brick wall, the sound insulation index up to 40 ~ 50 dB. ②Fireproof. Gypsum board is a non-combustible material, with a certain degree of fire resistance, some can be used as a steel structure of the fire protection layer. Strength. When the lateral load of the wall is 250 Pa, the maximum lateral deformation of the wall is not more than 1/240 of the height of the wall. ④ Humidity regulation. When the humidity in the air is larger than its own moisture content, gypsum board can absorb the moisture in the air; on the contrary, gypsum board can release the moisture in the board, which can play the role of regulating the humidity in the indoor air.
Edit gypsum board performance
(1) low production energy consumption. Used in the production of paper gypsum board binder cooked gypsum, its unit production energy consumption is 78% lower than cement. (2) Lightweight and heat insulation, with paper gypsum board as partition wall, the weight is only 1/3 1/4 of the brick wall. at the same time, due to the porous structure of the gypsum board, its thermal conductivity of 0.30, compared with the brick (0.43) and concrete (1.63), the heat insulation performance is excellent. (3) It has excellent fireproof performance, because gypsum releases water when it is heated, and its fireproof limit can be more than 2h. (4) Good decorative function, the surface of gypsum board is flat, the board and the board can be firmly bonded together by the adhesive material to form a seamless structure, and the architectural decorative effect is good. (5) Good constructability, gypsum board can be nailed, sawed, glued, and the construction is very convenient. Using it for decoration can get rid of the traditional wet work and greatly improve the construction efficiency. (6) Comfortable living function, because the gypsum board has a unique "breathing" performance, and thus has the ability to regulate indoor humidity, so that living comfort. (7) High production efficiency. It is conducive to the realization of large-scale production. Among all kinds of building boards, the production efficiency of gypsum board is the highest, which is convenient for large-scale production. (8) Low investment. Gypsum board production equipment and fiber gypsum board, cement foam board, gypsum board, compared with the ability to achieve continuous mechanized production, equipment utilization is very high, less investment in equipment.