A fire-resistant paper-faced gypsum board and its preparation method
A paper surface gypsum board and gypsum board technology, which is applied in the field of gypsum board preparation, can solve the problems of limited high temperature resistance of fire-resistant reinforcing fibers, gypsum board core breaks and falls off, and loss of fire insulation ability, etc., to reduce the water-paste ratio, Effect of improving heat absorption capacity and increasing fire resistance
Active Publication Date: 2020-08-14
BEIJING NEW BUILDING MATERIALS PLC
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Problems solved by technology
However, the gypsum board core will dehydrate and shrink and crack under the action of high-temperature flames, and the gypsum board will soon collapse due to cracking and lose its ability to prevent fire
Therefore, a certain amount of refractory reinforcing fiber is usually added to the gypsum board core; due to the pulling effect of the fiber, the gypsum board core will not fall off immediately after cracking; but due to the limited high temperature resistance of the refractory reinforcing fiber, when the refractory reinforcing fiber After gradually softening and failing at high temperature, the gypsum board core will still break and fall off at the crack
Method used
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preparation example Construction
[0041] The composite refractory material is prepared by the following method: dissolving aluminum dihydrogen phosphate in water, adding pumice and silica fume, stirring at a speed of 1500r / min for 20-30min, drying in vacuum to obtain a solid powder for later use; stirring and mixing the solid powder with kaolin , heat up to 80-100°C, keep warm for 6-8h, cool down to room temperature, and mix with silica sol to obtain a composite refractory material.
[0042] The content of each component in the gypsum board: 100 parts by weight of gypsum clinker; 8-16 parts by weight of kaolin; 3-7 parts by weight of pumice; 4-8 parts by weight of silica sol; 2-4 parts by weight of silica fume; -2 parts by weight; 0.05-0.3 parts by weight of periclase; 0.1-0.6 parts by weight of modified starch; 70-85 parts by weight of water.
[0043] Preferably, the content of each component is: 100 parts by weight of gypsum clinker; 10-15 parts by weight of kaolin; 3-6 parts by weight of pumice; 4-8 parts b...
Embodiment 1
[0048]
Embodiment 2
[0050]
[0051]
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Abstract
The invention discloses a fire-resistant paper-face gypsum board. The fire-resistant paper-face gypsum board comprises two layers of face protection papers and a gypsum board between two layers of theface protection papers, wherein the gypsum board comprises the following components in parts by weight: 100 parts of a gypsum clinker, 5-15 parts of kaolin, 1-10 parts of pumice, 2-10 parts of silicasol, 1-5 parts of silica fume, 0.5-3 parts of aluminum dihydrogen phosphate, 0.1-1 part of modified starch, and 70-90 parts of water. The fire-resistant paper-face gypsum board has high fire resistance; the good size stability can be maintained at high temperature, and the fire-resistant stability is excellent; and the gypsum board has the characteristics of light weight and excellent mechanicalproperties
Description
technical field [0001] The invention relates to the field of gypsum board preparation, in particular to a fire-resistant paper-faced gypsum board and a preparation method thereof. Background technique [0002] Gypsum board has the properties of light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire prevention. It is one of the new lightweight boards that are currently focused on development. At present, paper-faced gypsum boards have been widely used in interior partition walls, ceilings, sound-absorbing panels, ground floor panels and various decorative panels of various buildings such as residential buildings, office buildings, shops, hotels and industrial plants. However, the paper-faced gypsum board is limited by its fire stability and fire resistance limit, and its application still has relatively large limitations. [0003] Construction gypsum is hemihydrate gypsum, water is added during the production of gypsum ...
Claims
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IPC IPC(8): C04B28/34C04B111/28C04B111/30
CPCC04B28/344C04B2111/0062C04B2111/28C04B2111/30C04B2201/50C04B11/002C04B14/106C04B14/16C04B12/04C04B18/146C04B20/008C04B24/38C04B14/304
Inventor 陈红霞张羽飞李帆周梦文王霞赵云峰贾严严冉秀云
Owner BEIJING NEW BUILDING MATERIALS PLC