Magnesium oxide board and preparation method thereof

A glass magnesium board and magnesium oxide technology, which is applied in the field of building decoration materials, can solve the problems of low strength, easy moisture reversion and poor fire resistance of glass magnesium board, and achieve the effects of short production process time, difficult moisture reversion and strong fire resistance.

Inactive Publication Date: 2014-10-01
SHANGHAI HUIZHUO BUILDING DECORATIVE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main raw materials used above have low production cost and poor quality, which are mainly manifested in the following aspects: the finished glass magnesium board has low strength, easy to get damp, poor fire resistance, and is prone to cracking after high temperature burning. Long, the finished product needs to be soaked in water for a long time in order to soak out the excess chloride ions contained in the glass magnesium board, resulting in a long drying time, which seriously affects the production cycle in winter and rainy weather, resulting in a long production process. Up to about 15 days

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The slurry of the glass magnesium board includes the following components by weight:

[0039] 100 parts of magnesium oxide, the magnesium content is ≥85%, the activity is ≥62%, and the particle size is 250 mesh;

[0040] 90 parts of anhydrous magnesium chloride aqueous solution, 23.5 degrees Baume;

[0041] 15 parts perlite, closed cells;

[0042] 20 parts of plant straw, 80 meshes of sawdust;

[0043] 2 parts of silicon dioxide;

[0044] 2 parts of magnesite foaming agent, 100ml mixed with 5000ml water for foaming.

[0045] ① Preparation of slurry: mix the magnesium oxide and the anhydrous magnesium chloride aqueous solution according to the stated ratio and stir to form a slurry, add the perlite and plant straw in the stated ratio, stir well, and then add the silica , finally adding the foaming agent foam that has been watered and foamed to obtain a slurry;

[0046] ② Plate making: Put non-woven fabric, glass fiber mesh cloth or other reinforcing materials in...

Embodiment 2

[0062] The slurry of the glass magnesium board includes the following components by weight:

[0063] 100 parts of magnesium oxide, the magnesium content is ≥85%, the activity is ≥62%, and the particle size is 250 mesh;

[0064] 85 parts of anhydrous magnesium chloride aqueous solution, 23.5 degrees Baume;

[0065] 12 parts of perlite, closed cells;

[0066] 18 parts of plant straw, 80 meshes of sawdust;

[0067] 2 parts of silicon dioxide;

[0068] 2 parts of magnesite foaming agent, 100ml mixed with 5000ml water for foaming.

[0069] ① Preparation of slurry: mix the magnesium oxide and the anhydrous magnesium chloride aqueous solution according to the stated ratio and stir to form a slurry, add the perlite and plant straw in the stated ratio, stir well, and then add the silica , finally adding the foaming agent foam that has been watered and foamed to obtain a slurry;

[0070] ② Plate making: Put non-woven fabric, glass fiber mesh cloth or other reinforcing materials...

Embodiment 3

[0086] The slurry of the glass magnesium board includes the following components by weight:

[0087] 100 parts of magnesium oxide, the magnesium content is ≥85%, the activity is ≥62%, and the particle size is 250 mesh;

[0088] 80 parts of anhydrous magnesium chloride aqueous solution, 23.5 degrees Baume;

[0089] 10 parts of perlite, closed cells;

[0090] 15 parts of plant straw, 80 meshes of sawdust;

[0091] 2 parts of silicon dioxide;

[0092] 2 parts of magnesite foaming agent, 100ml mixed with 5000ml water for foaming.

[0093] ① Preparation of slurry: mix the magnesium oxide and the anhydrous magnesium chloride aqueous solution according to the stated ratio and stir to form a slurry, add the perlite and plant straw in the stated ratio, stir well, and then add the silica , finally adding the foaming agent foam that has been watered and foamed to obtain a slurry;

[0094] ② Plate making: Put non-woven fabric, glass fiber mesh cloth or other reinforcing materials...

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Abstract

The invention discloses a magnesium oxide board which is prepared by extruding a reinforced material and slurry into a sheet through forming equipment, wherein the reinforced material is composed of a non-woven fabric and a fiberglass mesh or other reinforced materials; the slurry comprises the following components in parts by mass: 100 parts of magnesium oxide with the magnesium content of at least 85% and the activity degree of at least 62%, 80-90 parts of anhydrous magnesium chloride water solution with the concentration of 10-40 baume degrees, 10-15 parts of lightweight filler A, 15-20 parts of lightweight filler B, 1-5 parts of silicon dioxide and 1-10 parts of foaming agent; the particle size of magnesium oxide is 250-400 meshes; preferably, the lightweight filler A is one or more selected from perlite, polyphenyl granules, gangue and vermiculite, and the lightweight filler B is one or more selected from wood flour, straw, rice husk and bamboo fiber; more preferably, the lightweight filler A is hole-closed perlite, and the lightweight filler B is straw sawdust of 80-100 meshes. The invention also discloses a preparation method of the magnesium oxide board. The magnesium oxide board prepared according to the invention is high in strength, not easy to get damp, strong in fire resistance and free of cracks after being fired at high temperature; in addition, the preparation method of the magnesium oxide board disclosed by the invention is short in time.

Description

technical field [0001] The invention relates to a building decoration material, in particular to a glass magnesium board and a preparation method thereof. Background technique [0002] The glass magnesium board is made of magnesium oxide, magnesium chloride, and water ternary system. One or more kinds, and one or more kinds of perlite, polystyrene particles, coal gangue and vermiculite) are new non-combustible decorative materials compounded as fillers. It is processed by a special production process, and has the characteristics of fire prevention, waterproof, odorless, non-toxic, non-freezing, non-corrosion, non-cracking, unchanged, non-combustible, high-strength, light-weight, convenient construction, and long service life. It can be directly painted, directly veneered, can be air nailed, and directly tiled. The surface has good coloring, high strength, bending resistance and toughness, can be nailed, sawed, and glued, and is convenient for decoration. It can also be com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B38/02
Inventor 刘胤
Owner SHANGHAI HUIZHUO BUILDING DECORATIVE MATERIAL
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