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A kind of anti-deformation gypsum board and its preparation method

An anti-deformation and gypsum board technology, applied in the field of gypsum board, can solve the problems of affecting the adhesion between the paper-faced gypsum board covering paper and the board core, easy to migrate, and the paper-faced gypsum board is prone to mildew, etc. Mildew, good adhesion and easy operation

Active Publication Date: 2020-12-25
BEIJING NEW BUILDING MATERIALS PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the phosphorus component contained in sodium trimetaphosphate is one of the nutrient bases for mold growth, and the plasterboard with sodium trimetaphosphate added is prone to mildew in a humid and hot environment; the sodium component contained in sodium trimetaphosphate, It is easy to migrate during the drying process of the gypsum board or in a humid and hot environment, which will affect the bonding force between the face paper and the core of the gypsum board

Method used

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  • A kind of anti-deformation gypsum board and its preparation method
  • A kind of anti-deformation gypsum board and its preparation method
  • A kind of anti-deformation gypsum board and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0039]The method for preparing the anti-deformation gypsum board provided in Example 1 of the present application includes the following steps:

[0040]Preparation of foaming liquid: adding 1 part by weight of foaming agent to 100 parts by weight of water, stirring uniformly at low speed to prepare a foaming liquid with a mass fraction of 1%; the foaming agent is sodium alkylbenzene sulfonate.

[0041]Prepare the foam mixture: add 10 parts by weight of the foaming liquid, 2 parts by weight of the binder, and 0.02 parts by weight of the anti-deformation agent into 300 parts by weight of water, place it on a magnetic stirrer and stir for 20 minutes. The temperature of the agitator is set to 80°C. After the room is allowed to stand and cool to room temperature, it is poured into the blender. The blender uses the American KitchenAid K45SSWH head-up blender. Prepare a foam mixture; wherein the amount of water can be determined according to the standard consistency of the plaster of Paris used....

Embodiment 2

[0048]The method for preparing the anti-deformation gypsum board provided in Example 2 of the present application includes the following steps:

[0049]Preparation of foaming liquid: adding 1 part by weight of foaming agent to 100 parts by weight of water, stirring uniformly at low speed to prepare a foaming liquid with a mass fraction of 1%; the foaming agent is sodium alkylbenzene sulfonate.

[0050]Prepare the foam mixture: add 50 parts by weight of the foaming liquid, 5 parts by weight of binder, and 0.1 parts by weight of anti-deformation agent into 340 parts by weight of water, and place it on a magnetic stirrer and stir for 30 minutes. The temperature of the agitator is set to 90℃, and the room is allowed to stand and cool to room temperature. Then, pour it into the mixer. The mixer is an American KitchenAid K45SSWH head-up mixer. Prepare a foam mixture; wherein the amount of water can be determined according to the standard consistency of the plaster of Paris used.

[0051]Wherein, t...

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Abstract

The invention provides an anti-deformation gypsum board which comprises the following components: 97%-99% of calcined gypsum powder, 0-1.5% of coagulation time adjusting agent, 0.4%-2.0% of binding agent, 0.02%-0.1% of foaming agent and 0.02%-0.1% of anti-deformation agent. The anti-deformation agent is prepared from 1-5 parts by weight of starch ether and 1 part by weight of levorotation sugar. The invention further provides a preparation method of the anti-deformation gypsum board, which comprises the following steps: adding the foaming agent into water and uniformly stirring to obtain a foaming solution with a mass fraction of 1%; adding the foaming solution, the binding agent and the anti-deformation agent into water, and stirring until foaming, obtaining a foam mixed solution, whereinthe anti-deformation agent is prepared from starch ether and levorotation sugar; and adding the calcined gypsum and the coagulation time modifier into the foam mixed solution, and uniformly stirringto obtain a gypsum slurry. The anti-deformation gypsum board provided by the invention has the advantages of being resistant to deformation, good in adhesion between surface paper and a board core, and not prone to mildew.

Description

Technical field[0001]The application of the present invention relates to the technical field of gypsum board, in particular to an anti-deformation gypsum board and a preparation method thereof.Background technique[0002]Paper-faced gypsum board has excellent properties such as light weight, fire resistance, sound insulation, heat preservation, heat insulation, and strong processability. It is widely used in various indoor use places without special requirements. Ordinary gypsum board is relatively thin and has low strength. It is prone to deformation in humid environments such as high temperature and rainy seasons, especially after ceiling construction, or wavy deformation after one or two years of decoration, which brings a lot to consumers. Troubles.[0003]In the prior art, the method of adding sodium trimetaphosphate is usually used to improve the density of the gypsum crystal structure and the connection strength between the crystal grains, thereby improving the deformation resist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B38/10C04B111/20
Inventor 周梦文张羽飞白宏成冉秀云贾严严
Owner BEIJING NEW BUILDING MATERIALS PLC