A kind of 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 restricting the use of moisture-conditioning gypsum board, reducing the mechanical properties of gypsum boards, and not being reported in literature, and achieving unaffected construction performance, reduced areal density, Solve the effect of easy powder

Active Publication Date: 2021-10-08
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

At present, the gypsum board with good humidity control function is usually mixed with humidity control materials in the existing gypsum paper. However, when the porous humidity control material is added, the mechanical properties of the gypsum board are greatly reduced, which limits the humidity control. The use of plasterboard
At the same time, in recent years, there is no literature report on intelligent gypsum-based paper-faced gypsum board with good humidity control function and good sensitivity to environmental humidity.
[0003] The mechanical properties of the existing paper-faced gypsum mixed with porous humidity-conditioning materials are greatly reduced, which limits the use of humidity-controlled paper-faced gypsum boards
In the existing technology, it is difficult to prepare a functional humidity-controlling paper-faced gypsum board with good humidity-controlling performance and better mechanical strength of the board by adjusting the formula.

Method used

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  • A kind of gypsum board and preparation method thereof
  • A kind of gypsum board and preparation method thereof
  • A kind of gypsum board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Pass 1000 grams of gypsum powder through an 80-mesh sieve. 60 g of zeolite was passed through a 200-mesh sieve, and then the zeolite was calcined in a muffle furnace (400° C.) for 2 hours, and then cooled in a desiccator for later use. 50g of diatomaceous earth is dried and dispersed in an oven for subsequent use. Mix the treated gypsum powder, zeolite, diatomite and silica micropowder (30g), ordinary Portland cement (30g) and tapioca starch (7g) whose strength grade is 42.5#; Determine the amount of water used for the standard consistency of the powder mix. Taking by weighing concentration is the silica sol solution 25g of 40wt%, according to the content of the water consumption in the standard consistency water consumption and the silica sol solution, takes by weighing mixing water, mixes water and mixing powder, blowing agent (0.35g, SASN812) were stirred together to prepare a slurry. The prepared slurry is flatly spread on the lower protective paper, and the upp...

Embodiment 2

[0073] The preparation process and method of Example 2 are exactly the same as those of Example 1, except that the coating formula is different. The coating formulation is as follows:

[0074] Put 8g of color-changing silica gel in a pulverizer to pulverize, pass through a 200-mesh sieve for use after pulverization. Mix discoloration silica gel powder, 40g polyacrylic acid emulsion, 0.8g silica sol solution (concentration: 29%), and 2g diatomaceous earth evenly. Get the above-mentioned preparation paper surface gypsum board (area density is 6kg / m 2 , the thickness is 9.5mm), the interception size is: 200mm×200mm. The above-mentioned mixed solution is divided into 10 times and evenly painted on the gypsum board, and the brushing interval is 5 minutes.

Embodiment 3

[0076] The preparation process and method of Example 3 are exactly the same as those of Example 1, except that the substrate formulation is different. The amount of silica sol added in the substrate formulation was 100 g.

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Abstract

The invention provides a gypsum board and a preparation method thereof, specifically a functional paper-faced gypsum board with moisture-sensitive effects, which is composed of a gypsum board substrate and a coating coated on the surface of the gypsum board substrate; Parts include: 66-94 parts of gypsum powder, 1-5 parts of diatomaceous earth, 1-8 parts of zeolite, 1-5 parts of silica powder, 1-5 parts of cement, 0.3-1 part of binder, 0.01-0.06 parts Foaming agent and 1-10 parts of silica sol solution; Coating raw materials include by weight: 45-85 parts of polyacrylic acid emulsion, 10-40 parts of color-changing silica gel, 0-10 parts of diatomaceous earth, 1-5 parts of silica sol solution. The paper-faced gypsum board with moisture-sensitive effect has improved hygroscopicity and moisture-releasing performance without affecting the construction performance, and has the function of indicating the relative humidity of the environment, and at the same time, its color-changing function can change the coating color of the paper-faced gypsum , has the functions of decorating and improving the comfort of the living environment.

Description

technical field [0001] This article relates to building material technology, especially to a gypsum board and a preparation method thereof. The gypsum board is specifically a functional paper-faced gypsum board with moisture-sensitive effects. Background technique [0002] In addition to temperature, air humidity is an important environmental parameter closely related to people's life and production. Relative humidity has an important impact on the preservation of materials and the comfort of people's living environment. Paper-faced gypsum board is a porous building decoration material. As an environmentally friendly building material, paper-faced gypsum board has the function of fine-tuning the temperature and humidity of the environment. At present, gypsum boards with good humidity control function are usually mixed with humidity control materials into the existing gypsum paper. However, when the porous moisture control materials are added, the mechanical properties of gy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/10C04B28/14C09D133/04C09D7/61C09D7/62E04F13/14
CPCC04B28/14C04B2111/28C04B2111/40C04B2201/50C09D133/04C09D7/61C09D7/62C09D7/70E04F13/0871E04F13/14C04B7/02C04B14/047C04B14/08C04B14/062C04B24/38C04B18/146C04B2103/42C04B38/10C08K3/36C08K7/26C08K9/12C08K3/16
Inventor 王丽陈红霞尚珺虓
Owner CHINA NAT BUILDING MATERIALS TECHCAL INNOVATION & RES INST LIMITED
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