Method for eliminating efflorescence of magnesium oxychloride wall through magnesium sulfate

A technology of magnesium sulfate and magnesium oxychloride, which is applied in the field of building materials, can solve the problems of reducing product strength, shortening the service life of products, and getting wet, and achieves the effects of increasing strength and stability, improving flexural strength, and good surface finish

Inactive Publication Date: 2016-08-24
广东晶盈环保建材实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the humidity of the air medium increases or the product is placed in a place with high humidity, the crystalline magnesium chloride will absorb the moisture in the air and condense on the surface of the product, becoming humid and forming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] A kind of method that magnesium sulphate solves magnesium oxychloride wall to return halogen, comprises the steps:

[0030] (1) Prepare magnesium sulfate aqueous solution: add magnesium sulfate powder into water with pH=7, stir evenly, and prepare magnesium sulfate aqueous solution with Baume degree of 25;

[0031] (2) Add a modifier to the magnesium sulfate aqueous solution obtained in step (1), and stir evenly to obtain mixture A; wherein the modifier is copper sulfate, ferrous sulfate, potassium dichromate and methyl silanol Potassium is composed of mass ratio 1:1.2:2.6:2.7;

[0032] (3) adding magnesium oxide with a purity of 85% and an activity of 65% to the mixture A described in step (2), stirring while adding, to obtain a mixture B;

[0033] (4) Add fly ash, surface-modified whiskers, polypropylene fiber, quartz sand, sawdust, straw and perlite to mixture B described in step (3) according to the formula, and stir evenly to obtain mixture C; ...

Example Embodiment

[0036] Example 2

[0037] A kind of method that magnesium sulphate solves magnesium oxychloride wall to return halogen, comprises the steps:

[0038] (1) Prepare magnesium sulfate aqueous solution: add magnesium sulfate powder into water with pH=6.5, stir evenly, and prepare magnesium sulfate aqueous solution with Baume degree of 26;

[0039] (2) Add a modifier to the magnesium sulfate aqueous solution obtained in step (1), and stir evenly to obtain mixture A; wherein the modifier is copper sulfate, ferrous sulfate, potassium dichromate and methyl silanol Potassium is composed of mass ratio 1:1:2.4:2;

[0040] (3) adding magnesium oxide with a purity of 85% and an activity of 65% to the mixture A described in step (2), stirring while adding, to obtain a mixture B;

[0041] (4) Add fly ash, surface-modified whiskers, polypropylene fiber, quartz sand, sawdust, straw and perlite to mixture B described in step (3) according to the formula, and stir evenly to obtain mixture C;

...

Example Embodiment

[0044] Example 3

[0045] A kind of method that magnesium sulphate solves magnesium oxychloride wall to return halogen, comprises the steps:

[0046] (1) Prepare magnesium sulfate aqueous solution: add magnesium sulfate powder into water with pH=7, stir evenly, and prepare magnesium sulfate aqueous solution with Baume degree of 24;

[0047] (2) Add a modifier to the magnesium sulfate aqueous solution obtained in step (1), and stir evenly to obtain mixture A; wherein the modifier is copper sulfate, ferrous sulfate, potassium dichromate and methyl silanol Potassium is composed of a mass ratio of 1:1.5:3:2.8;

[0048] (3) adding magnesium oxide with a purity of 85% and an activity of 65% to the mixture A described in step (2), stirring while adding, to obtain a mixture B;

[0049] (4) Add fly ash, surface-modified whiskers, polypropylene fiber, quartz sand, sawdust, straw and perlite to mixture B described in step (3) according to the formula, and stir evenly to obtain mixture ...

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PUM

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Abstract

The invention provides a method for eliminating efflorescence of a magnesium oxychloride wall through magnesium sulfate. The wall without efflorescence is prepared from raw materials in parts by weight as follows: 50-70 parts of a magnesium sulfate aqueous solution, 30-40 parts of magnesium oxide, 3-4 parts of a modifying agent, 0.2-0.3 parts of fly ash, 0.8-1.4 parts of surface-modified whiskers, 0.6-0.8 parts of polypropylene fibers, 0.3-0.4 parts of quartz sand, 0.6-1.2 parts of saw dust, 1-2 parts of straw and 2-4 pats of perlite. According to the wall preparation process, magnesium oxide and magnesium sulfate are taken as main raw materials, the main defect that a wall prepared from magnesium and magnesium chloride is prone to moisture absorption and efflorescence is overcome, and the prepared wall has the excellent performance of high strength, heat resistance, water resistance, thermal insulation, acid-base resistance, good surface smoothness and no efflorescence.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a method for using magnesium sulfate to solve the problem of backhalogenation of magnesium oxychloride walls. Background technique [0002] With the rapid development of my country's economic construction, people's demand for infrastructure materials such as cement and wood is increasing day by day. This makes energy crisis, environmental pollution and other issues more and more serious. Magnesium oxychloride products have attracted widespread attention due to their light weight, high strength, low alkalinity, corrosion resistance, impact resistance, easy molding, simple production process, low cost, low energy consumption, and environmental friendliness. Magnesium oxychloride products are a kind of air-hardening cementitious material (commonly known as magnesium oxychloride cement) obtained by two-component mixing of activated magnesia and industrial magn...

Claims

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Application Information

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IPC IPC(8): C04B28/30C04B14/06C04B14/18C04B14/38C04B16/06C04B18/08C04B18/24C04B18/26C04B22/08C04B22/14C04B24/42C04B111/20
CPCC04B28/30C04B2111/2023C04B22/142C04B22/087C04B24/42C04B14/383C04B14/06C04B18/26C04B18/24C04B14/18C04B18/08C04B16/0633C04B40/0028Y02W30/91
Inventor 孔祥坚
Owner 广东晶盈环保建材实业有限公司
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