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Allochroic gypsum board and preparation method thereof

A gypsum board and gypsum powder technology, applied in the field of building materials, can solve the problems of limited adjustment range and less research, and achieve the effects of improving comfort, reducing drying temperature, and unaffected construction performance.

Active Publication Date: 2020-09-01
CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adjustment range of gypsum board to the indoor wet environment is limited, and there are few reports on how to increase the adjustment of gypsum board to the indoor wet environment
In addition, with the improvement of living standards, people have more and more requirements for intelligent and environmentally friendly interior decoration materials, but there are fewer studies in this area.

Method used

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  • Allochroic gypsum board and preparation method thereof
  • Allochroic gypsum board and preparation method thereof
  • Allochroic gypsum board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] (1) Pass 1000 grams of gypsum powder through an 80-mesh sieve, and crush and grind 50 g of discolored silica gel to 80 mesh. Mix the treated gypsum powder, discolored silica gel powder and 3g of water reducer (BASF Melflux5691F) evenly;

[0057] (2) Test steps (1) Standard consistency expansion degree of mixed powder to determine the standard consistency water consumption of mixed powder.

[0058] (3) According to the water consumption of the standard consistency, take the mixing water, mix the mixing water with the mixing powder, foaming agent (0.35g, SASN812) to prepare slurry.

[0059] (4) The prepared slurry is placed in the mold, and the thickness of the plate is 9.5 mm. After the final setting is completed, the board is placed in an oven and dried at 45°C until constant weight.

Embodiment 2

[0061] (1) Pass 600 grams of gypsum powder through an 80-mesh sieve; mix the treated gypsum powder with 1 g of water reducer (BASF Melflux5691F) evenly. (2) Test the expansion degree of the mixed powder to determine the water consumption of the standard consistency of the mixed powder.

[0062] (3) Pass 400 grams of gypsum powder through an 80-mesh sieve. Pass 600 grams of gypsum powder through an 80-mesh sieve, crush and grind 50 g of discolored silica gel to 80 mesh; mix the treated gypsum powder, discolored silica gel powder and 2 g of water reducer (BASF Melflux5691F) evenly.

[0063] (4) Test the expansion degree of the mixed powder obtained in step (3) to determine the standard consistency water consumption of the mixed powder.

[0064] (5) Measure the standard consistency water consumption by step (2), take the mixing water, mix the mixing powder and foaming agent (0.15g, SASN812) to prepare slurry 1.

[0065] (6) placing the slurry 1 prepared in step (5) into a mol...

Embodiment 3

[0070] The difference between Example 3 and Example 2 is that the color-changing silica gel material in the gypsum board raw material is ground to 600 mesh, and the other raw materials and preparation steps are the same as in Example 2.

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Abstract

The invention discloses an allochroic gypsum board and a preparation method thereof. The allochroic gypsum board is prepared from gypsum powder and allochroic silica gel. Optionally, the raw materialsof the allochroic gypsum board can also comprise a foaming agent and a water reducing agent. The preparation method of the allochroic gypsum board provided by the invention comprises the following steps of: uniformly mixing the gypsum powder, silica gel powder and water reducing agent; testing the standard consistency expansion degree of the prepared mixture so as to determine the standard consistency water consumption of the mixture; stirring the mixture with water and the foaming agent according to the water consumption of the standard consistency to prepare slurry; and finally, molding theslurry, performing final setting, and then drying an obtained product to constant weight to obtain the allochroic gypsum board. The surface of the allochroic gypsum board is free of surface protection paper, the mechanical property and the fire resistance of the allochroic gypsum board are excellent, meanwhile, the color of the gypsum board can be changed according to the environment humidity; and the llochroic gypsum board has the functions of decorating and improving the comfort degree of a living environment.

Description

technical field [0001] This article relates to building material technology, especially a color-changing gypsum board and a preparation method thereof. The color-changing gypsum board is a functional intelligent gypsum board, specifically a gypsum board with a moisture-sensitive effect and a preparation method thereof. Background technique [0002] In recent years, as a new type of interior decoration material, gypsum board has been accepted and used by more and more people, because gypsum board itself, as a porous building material product, can fine-tune the indoor environment, especially the indoor humidity. However, the adjustment range of gypsum board to the indoor humidity environment is limited, and there are few reports on how to increase the adjustment of gypsum board to the indoor humidity environment. In addition, with the improvement of living standards, people have more and more requirements for intelligent and environmentally friendly interior decoration materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/02C04B111/28C04B111/80C04B111/82
CPCC04B28/14C04B2111/80C04B2111/82C04B2111/28C04B2201/50C04B14/064C04B2103/302C04B38/02
Inventor 王丽尚珺虓陈红霞
Owner CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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