How to choose gypsum board?

Plasterboard

Main specifications of gypsum board

Length:1500,2000,2400 2700 3000 3300,3600

Width: 900, 1200, 1500.

Thickness: 9.5, 12, 15, 18, 2 1 25, 12.7, 15.9?

Commonly used: 2440 *1220 * 95/2440 *1220 *12.

Gypsum board type

Gypsum board, paperless gypsum board, decorative gypsum board, gypsum hollow lath, fiber gypsum board, gypsum sound-absorbing board, anchor gypsum board, etc. ?

1. Gypsum board is a kind of lightweight board, with gypsum slurry as interlayer and paper as protective surface on both sides. Gypsum board is light in texture, high in strength, fireproof, moth-proof and easy to process. Ordinary gypsum board is used for interior walls, partitions and suspended ceilings. Water-resistant gypsum board after fire protection treatment can be used for room walls with high humidity, such as the lining of ceramic tiles, metal plates and plastic brick walls in bathrooms, kitchens and bathrooms.

Ordinary gypsum board: ivory white paper panel core and gray board core are the most economical and common varieties. It is recommended to choose 12mm or more, which is suitable for indoor ceiling decoration, light partition wall and partition decoration.

Water-resistant gypsum board: its core material and protective paper are waterproof and can be used in high humidity rooms such as kitchen, bathroom and toilet, but it cannot be soaked for a long time.

Refractory gypsum board: refractory materials and a large number of glass fibers are added to the core of the board. When cutting gypsum board, many glass fibers can be seen from the cross section. Used for fire prevention and fire resistance, when a fire occurs, the plate can keep its structural integrity for a certain period of time, thus playing a role in blocking the spread of flame. Suitable for indoor partition walls, suspended ceilings and decorative boards with high fire resistance requirements.

Moisture-proof gypsum board: the surface has high moisture-proof performance. Moisture-proof gypsum boards are used for ceilings, partitions and decorative walls in rooms with high environmental humidity. ?

2. Paperless gypsum board is a kind of wood substitute board with superior performance, which is a new building board with building gypsum powder as the main raw material and various fibers as the reinforcing material. It not only covers the whole application range of paper-paste paperboard, but also expands the application range.

3. Decorative gypsum board Decorative gypsum board is a board with various patterns and patterns made of building gypsum as the main raw material and a small amount of fiber materials, such as gypsum printed board, perforated ceiling board, gypsum embossed ceiling board and paper gypsum decorative board. It has the characteristics of light weight, fire prevention, moisture prevention, easy processing and simple installation. It can be used to decorate walls, make wallboard and skirting board, etc. It is an ideal material to replace natural stone and terrazzo. ?

4. Gypsum hollow lath Gypsum hollow lath is a kind of hollow slab made of building gypsum as the main raw material and adding a proper amount of light filler or fiber material. This kind of board does not need paper and adhesive, and it does not need keel when it is installed. Mainly used for interior walls and partitions.

5. Fiber gypsum board is made of building gypsum as the main raw material and adding a proper amount of fiber reinforced materials. It can be used for interior walls and partitions, and can also be used to make furniture instead of wood. ?

6. Pure formaldehyde gypsum board is widely used in commercial buildings, offices, places of leisure and entertainment, shops, supermarkets, hospitals, schools and other places that require visual effects, environmental protection, sound insulation and noise reduction, fire prevention and moisture prevention of ceilings and partitions.

Is there formaldehyde in gypsum board?

Main materials of gypsum board

1, yard gypsum; 2. Admixtures; 3. Protective paper; 4. Edge adhesive;

5. water.

So what are they?

1, gypsum: desulfurization gypsum/natural gypsum.

2. Additives: special foaming agent for glass fiber, paper fiber and gypsum board.

3. Cover paper: imported pulp/domestic pulp.

4. Adhesive: corn starch

5, water: definitely not pure water!

After reading the composition materials, it can be analyzed that gypsum board does not contain formaldehyde, and formaldehyde is only produced because of glue. Glue is not used in the production of gypsum board, and the glue between paper surface and core material is corn modified starch glue (the cost of starch glue is much lower than that of traditional urea-formaldehyde glue).

So gypsum board is non-toxic?

Gypsum board does not contain formaldehyde, but whether there are harmful substances needs to be identified and screened.

China's big brands:

1 Beixin Building Materials-Longpai:

There are 16 production lines of central enterprises and listed companies, covering 22 provinces in China, with a design capacity of10.93 billion square meters.

2 Taishan-Taishan gypsum board (Taishan sub-brands are too many, it seems that many factories have been acquired, the low-end market is basically occupied by Taishan, and Taishan gypsum is controlled by Beixin, so Taishan and Longpai are actually one now).

Foreign brand

1 knauf gypsum board: German brand

There are 4 production bases and 5 production lines, which are located in Dongguan, Wuhu, Tianjin and Taitai (2 lines), with a designed production capacity of 65.438+0.2 billion square meters.

2 Boluo gypsum board: Australian brand

There are 4 production bases and 5 production lines, located in Shanghai.

Design capacity of Shanghai, Chongqing, Chengdu and Tai 'an1.400 million square meters.

3 Saint-Gobain Eddingzheke gypsum board: French brand

There are 3 production bases and 5 production lines, located in Shanghai, Changzhou and Huludao respectively, with a designed production capacity of 87 million square meters?

Hong Kong-owned brand

Jason: A subsidiary of Hongkong Rong Sheng Group and a brother company of Zaozhuang China Resources Paper.