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Preparation process of gypsum board for building walls

A preparation process and a technology for building walls, which are applied in the field of building materials, can solve the problems of poor adsorption of harmful gases, waterproof and moisture resistance, low flexural strength and impact strength, and achieve good market prospects, low cost, and water and moisture resistance. strong effect

Inactive Publication Date: 2015-04-22
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the gypsum boards used for interior walls have defects such as waterproof and moisture resistance, low flexural strength, low impact strength, and poor ability to absorb harmful gases.

Method used

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  • Preparation process of gypsum board for building walls

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation process for building wall gypsum boards, comprising the steps of:

[0021] Step 1): Weigh each raw material according to parts by weight for later use; 50 parts of gypsum powder, 20 parts of fly ash, 15 parts of egg shells, 15 parts of corn stalks, 10 parts of hydroxymethyl cellulose, 6 parts of dolomite, and 6 parts of borax , 5 parts of hydrated lime, 5 parts of starch ether, 3 parts of lithium-based bentonite, 2 parts of No. 42.5 ordinary Portland cement, and 70 parts of water; the particle size of the gypsum powder, fly ash, hydrated lime and lithium-based bentonite is controlled at 100um within.

[0022] Step 2): put egg shells and straws into a pulverizer, and pulverize them into powder A with a particle size within 100um;

[0023] Step 3): put dolomite and borax into a vibrating ball mill, stop the ball milling after the ball milling until the particle size is less than 100um, discharge, and then stir evenly to obtain powder B;

[0024] Step 4): P...

Embodiment 2

[0026] A preparation process for building wall gypsum boards, comprising the steps of:

[0027] Step 1): Weigh each raw material according to the weight portion for later use; 60 parts of gypsum powder, 30 parts of fly ash, 18 parts of egg shell, 18 parts of wheat straw, 12 parts of hydroxymethyl cellulose, 9 parts of dolomite, and 9 parts of borax , 7 parts of hydrated lime, 7 parts of starch ether, 5 parts of lithium-based bentonite, 3 parts of No. 42.5 ordinary Portland cement, and 80 parts of water; the particle size of the gypsum powder, fly ash, hydrated lime and lithium-based bentonite is controlled at 100um within;

[0028] Step 2): put egg shells and straws into a pulverizer, and pulverize them into powder A with a particle size within 100um;

[0029] Step 3): put dolomite and borax into a vibrating ball mill, stop the ball milling after the ball milling until the particle size is less than 100um, discharge, and then stir evenly to obtain powder B;

[0030] Step 4):...

Embodiment 3

[0032] According to the test and detection of the performance parameters of the gypsum board prepared by the process of Example 1 and Example 2 of the present invention: the specific test results are shown in Table 1, and the commonly used Saint-Gobain formaldehyde-purified gypsum board in the market is used as a contrast.

[0033] Table 1

[0034]

[0035] After testing, the removal rate of the gypsum board prepared by the process of Example 2 of the present invention to the free formaldehyde in the living room can reach more than 53% (the control group is 39%), and the removal rate of benzene is more than 35%. It can be seen that the gypsum board prepared by the present invention has good waterproof and moisture resistance, is environmentally friendly and pollution-free, and can effectively remove harmful gases such as formaldehyde and benzene; it has relatively high performance parameters such as compressive strength, thermal conductivity, and 2h water absorption thicknes...

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Abstract

Belonging to the field of building materials, the invention discloses a preparation process of a gypsum board for building walls. The process includes: step 1) raw material weighing, step 2) preparation of powder A, step 3) preparation of powder B, and step 4) preparation of the gypsum board. The gypsum board prepared by the process provided by the invention has the characteristics of good waterproof and moisture resistant performance, good mechanical properties, environmental protection and no pollution, and can effectively remove formaldehyde and benzene harmful gas.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a preparation process for gypsum boards for building walls. Background technique [0002] With the continuous development of urbanization, people's requirements for building materials are getting higher and higher. At present, in building walls, gypsum board is the most used building material. Gypsum board is a kind of building gypsum as the main raw material Material . It is a building material with light weight, high strength, thin thickness, convenient processing, sound insulation, heat insulation and fire resistance. It is one of the new lightweight panels that are currently being developed. Gypsum board has been widely used in various buildings such as residential buildings, office buildings, shops, hotels and industrial plants for interior partition walls, wall cladding panels (instead of plastering layers on walls), ceiling , Sound-absorbing panels , gr...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B18/08C04B18/24C04B18/04
CPCY02W30/91
Inventor 刘晓山李彪王东阳夏晓聪王兴宇
Owner STATE GRID CORP OF CHINA
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