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A kind of water-resistance special agent for gypsum

A water-resistant agent and gypsum technology, which is applied in the field of gypsum admixture and gypsum deep processing, can solve problems affecting stability, large organic component content, complex preparation process, etc., achieve good applicability, improve water resistance and strength, and have obvious effects Effect

Active Publication Date: 2020-12-08
常州市众固科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above documents mainly have a certain effect on the water resistance and strength of gypsum products, but there are problems such as large organic component content, complicated preparation process, poor long-term compatibility with gypsum matrix, which affects its stability, etc.

Method used

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  • A kind of water-resistance special agent for gypsum
  • A kind of water-resistance special agent for gypsum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]The preparation method of the special enhanced water-resistant agent for gypsum and the treatment method of gypsum products of this embodiment are as follows:

[0035]1) Dissolve sodium aluminum sulfate reagent in the first part of water at 80℃~90℃ to make sodium aluminum sulfate solution;

[0036]2) Add aluminum sulfate, sodium stearate, sodium silicate, and calcium hydroxide to the above-mentioned sodium aluminum sulfate solution at 80-90°C, stir evenly, and add a second portion of water until the solutes are completely dissolved, and cool to room temperature , That is, a special enhanced water-resistant agent solution for gypsum; the total weight of the first part of water and the second part of water is 25 to 70 parts;

[0037]3) Select the surface gypsum prepared by building gypsum powder as the matrix, and after dust removal treatment on the surface of the surface gypsum plaster, evenly coat the surface with a layer of enhanced water-resistant agent solution with a penetration de...

Embodiment 2

[0043]The preparation method of the special enhanced water-resistant agent for gypsum and the processing method of gypsum products of this embodiment are as follows:

[0044]1) Using aluminum sulfate + sodium sulfate method, that is, after aluminum sulfate is completely dissolved in 25 to 70 parts of water at 80°C, sodium sulfate is added to the resulting aluminum sulfate solution and reacted at 80 to 90°C to prepare sulfuric acid Aluminum sodium solution;

[0045]As Na2SO4+Al2(SO4)3=2NaAl(SO4)2Therefore, when the aluminum sulfate+sodium sulfate method is used to prepare sodium aluminum sulfate solution, the weight parts of sodium aluminum sulfate are converted into weight parts of aluminum sulfate and sulfuric acid according to the weight ratio of the water-resistant agent. The weight parts of sodium, respectively weigh aluminum sulfate and sodium sulfate according to the converted weight parts, and then dissolve and react to prepare a sodium aluminum sulfate solution;

[0046]2) Add alumin...

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Abstract

The invention relates to a special enhanced water resistance agent for gypsum, which belongs to the technical field of gypsum admixture and gypsum deep processing. The enhanced water resistance agent includes the following raw materials in parts by weight: 10 parts of aluminum sulfate, 0.3-20 parts of sodium aluminum sulfate, 2-5 parts of sodium stearate, 2-5 parts of sodium silicate, 1-3 parts of calcium hydroxide 25-70 parts of water. The present invention can form a layer of hydraulic hydration product with good compatibility with the gypsum matrix on the surface of the gypsum product by spraying the special water-resistant agent for gypsum on the surface of the gypsum product prepared by building gypsum powder or high-strength gypsum powder, thus changing the surface layer of the gypsum matrix Excellent product properties and pore structure, so that the strength and softening coefficient of gypsum products are greatly improved, especially suitable for surface enhancement and water resistance treatment of gypsum plastering, gypsum blocks, gypsum boards and other gypsum products.

Description

Technical field[0001]The invention belongs to the technical field of gypsum admixture and deep processing of gypsum, and specifically relates to a special enhanced water resistance agent for gypsum.Background technique[0002]As a traditional inorganic building material, gypsum products have the advantages of thermal insulation, humidity control, light weight, sound insulation, fire resistance, and convenient processing, and are widely used in building materials, decoration, mold processing and other fields. Because the strength of gypsum products is mainly produced by the close overlap of calcium sulfate dihydrate crystals, and the solubility of calcium sulfate dihydrate itself is larger and there are more pores in the hardened body, it is easy to cause lower strength and poor water resistance of gypsum products, especially when The strength of gypsum products is greatly reduced after being damp and it is easy to warp and deform, which limits its development and application.[0003]At ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/08C04B103/65
CPCC04B40/0039C04B2103/65C04B22/148C04B22/142C04B24/08C04B22/00C04B22/064
Inventor 茹晓红王玉江林海燕张新爱郅真真王永刚
Owner 常州市众固科技发展有限公司
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