Halogen-free environmentally-friendly non-combustible magnesium oxide-magnesium sulfate inorganic composite material

Abstract

The invention relates to a halogen-free environmentally-friendly non-combustible magnesium oxide-magnesium sulfate inorganic composite material. The halogen-free environmentally-friendly non-combustible magnesium oxide-magnesium sulfate inorganic composite material comprises 20 to 60 parts of magnesium oxide, 30 to 80 parts of a magnesium sulfate solution having mass concentration of 20 to 70%, 0 to 20 parts of heat insulation material powder and 0.5 to 3 parts of an additive F802, wherein the heat insulation material powder comprises alumina silicate powder, calcium silicate powder, glass powder, quartz powder, bead powder, cenosphere powder, mica powder, gypsum powder, meerschaum powder, attapulgite powder, pearlite powder and one or more of other powdery refractory materials. The halogen-free environmentally-friendly non-combustible magnesium oxide-magnesium sulfate inorganic composite material can be prepared into a halogen-free environmentally-friendly non-combustible magnesium oxide-magnesium sulfate inorganic composite plate or a fireproof, heat insulation and sound insulation foamed plate. The halogen-free environmentally-friendly non-combustible magnesium oxide-magnesium sulfate inorganic composite material does not get damp and produce a helogenation phenomenon in a wet weather, and has stable fire-resistance and high strength. A plate prepared from the halogen-free environmentally-friendly non-combustible magnesium oxide-magnesium sulfate inorganic composite material does not get damp and produce a helogenation phenomenon in a wet weather, has stable fire-resistance, high strength, a long service life, a simple structure and good secondary processing performances, is convenient for decoration, and can be utilized as a safe and environmentally-friendly building plate having wide use prospects.

Description

technical field [0001] The invention relates to a composite material, in particular to a halogen-free environment-friendly magnesium oxide-magnesium sulfate non-combustible inorganic composite material. It can be widely used in the production of inorganic composite boards. Background technique [0002] Existing inorganic composite panels use magnesium oxide-magnesium chloride as the base material, which has the following disadvantages: [0003] 1. Decomposition produces a large amount of irritating harmful hydrogen chloride gas, causing secondary disasters; [0004] 2. When the weather is humid, there will be moisture and brine phenomenon, which is corrosive to metal; [0005] 3. After absorbing moisture, the mechanical strength decreases obviously, which affects the service life; [0006] 4. The flame resistance is not stable enough, and it often explodes in case of fire, resulting in failure of fire protection; [0007] 5. When exposed to fire, it will decompose a...

AI Technical Summary

Problems solved by technology

[0003] 1. Decomposition produces a large amount of irritating harmful hydrogen chloride gas, causing secondary disasters;

[0004] 2. When the weather is humid, there will be moisture and brine phenomenon, which is corrosive to metal;

[0005] 3. After absorbing moisture, the mechanical strength decreases obviously, which affects the service life;

[0006] 4. The flame resistance is not stable enough, and it often explodes in case of fire, resulting in failure of fire prevention;

[0007] 5. When exposed to fire, it will decompose and pulverize and lose its strength, and it can be worn at the touch of a finger

[0008] Therefore, although magnesium oxide-magnesium chloride inorganic composite boards have been widely used in the market, there are still many problems, which need to be solved to improve performance, otherwise they will face a sense of crisis that will affect the development and use, or even be eliminated.