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Preparation method of magnesium oxychloride cement foam concrete wall heat-preservation material

A technology of foam concrete and magnesium oxychloride cement, which is applied in the field of building materials, can solve the problems that the practical application of magnesium oxychloride cement foam concrete cannot be popularized, magnesium oxychloride cement is easy to absorb moisture and brine, thermal insulation, poor sound absorption effect, etc. problems, to avoid deformation, improve water resistance and fire performance, and maintain the effect of wall strength

Inactive Publication Date: 2016-11-16
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be used for decorative materials, fireproof panels, etc., but magnesium oxychloride cement is prone to moisture absorption, halogenation, warping, etc., and its application in external wall insulation is limited.
[0004] The existing magnesium oxychloride cement foam concrete production focuses on improving the water resistance of magnesium oxychloride cement products, while ignoring its light weight characteristics, high product density, poor thermal insulation and sound absorption effects, and production costs. high
Therefore, the practical application of magnesium oxychloride cement foam concrete cannot be promoted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1, mixing magnesium chloride with water to prepare brine with a concentration of 24%;

[0027] Step 2, mix the antistatic agent with water to prepare a solution with a mass fraction of 0.4%, soak 2 parts of EPS particles in this solution, take out and dry after wetting;

[0028] Step 3, preparing the anti-water additive into a phosphate solution with a mass concentration of 84%;

[0029] Step 4, mixing 1 part by mass of magnesium oxide with filler and fiber to obtain magnesium oxychloride cement slurry, the mass ratio of magnesium oxide and brine is 1:0.5, wherein the amount of filler is 3% of the amount of magnesium oxide %, the fiber content is 0.6% of the amount of magnesia, wherein the magnesia is derived from light-burned magnesia powder, the magnesia content is 80%, the activity is 55%, the filler is a mixture of coal ash and silica fume, and the fiber is poly Acrylic fiber;

[0030] Step 5: Add the phosphate solution and the water reducing agent into the b...

Embodiment 2

[0034] Step 1, mixing magnesium chloride with water to prepare brine with a concentration of 24%;

[0035] Step 2, mix the antistatic agent with water to prepare a solution with a mass fraction of 0.4%, soak 2 parts of EPS particles in this solution, take out and dry after wetting;

[0036] Step 3, preparing the anti-water additive into a phosphate solution with a mass concentration of 84%;

[0037] Step 4, mixing 1 part by mass of magnesium oxide with filler and fiber to obtain magnesium oxychloride cement slurry, the mass ratio of magnesium oxide and brine is 1:0.5, wherein the amount of filler is 3% of the amount of magnesium oxide %, the amount of fiber is 0.6% of the amount of magnesia, wherein the magnesia is derived from light-burned magnesia powder, the content of magnesia is 90%, the activity is 65%, the filler is a mixture of slag and desulfurized gypsum, and the fiber is poly Acrylic fiber;

[0038] Step 5: Add the phosphate solution and the water reducing agent i...

Embodiment 3

[0042] Step 1, mixing magnesium chloride with water to prepare brine with a concentration of 24%;

[0043] Step 2, mix the antistatic agent with water to prepare a solution with a mass fraction of 0.4%, soak 2 parts of EPS particles in this solution, take out and dry after wetting;

[0044] Step 3, preparing the anti-water additive into a phosphate solution with a mass concentration of 84%;

[0045] Step 4, mixing 1 part by mass of magnesium oxide with filler and fiber to obtain magnesium oxychloride cement slurry, the mass ratio of magnesium oxide and brine is 1:0.5, wherein the amount of filler is 3% of the amount of magnesium oxide %, the fiber content is 0.6% of the amount of magnesia, wherein the magnesia is derived from light-burned magnesia powder, wherein the magnesia content is 85%, the activity is 60%, and the filler is a mixture of coal ash, silica fume and slag, The fiber is polypropylene fiber;

[0046] Step 5: Add the phosphate solution and the water reducing a...

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Abstract

The invention discloses a preparation method of a magnesium oxychloride cement foam concrete wall heat-preservation material. The magnesium oxychloride cement foam concrete wall heat-preservation material prepared by the preparation method disclosed by the invention is fast to coagulate and harden, when the magnesium oxychloride cement foam concrete wall heat-preservation material is foamed with a foaming agent, a composite foam stabilizer or a retarder is not used, EPS granules are mixed, the number of pores in products is increased, the foaming efficiency is high, besides, the density of the products is reduced, and the magnesium oxychloride cement foam concrete wall heat-preservation material is high in weight and capable of heat preservation and heat insulation; fibers are mixed with magnesium oxychloride cement, so that the surface strength, the bending strength and the cutting strength along planes of the products are improved, magnesium oxychloride cement products are prevented from generating deformation due to pressing and the like, the stacking and the transportation of the magnesium oxychloride cement products are greatly facilitated, and the load of buildings can also be effectively alleviated while the strength of wall is kept.

Description

【Technical field】 [0001] The invention belongs to the field of building materials, and in particular relates to a preparation method of a magnesium oxychloride cement foam concrete wall insulation material. 【Background technique】 [0002] In the 21st century when energy conservation and environmental protection are vigorously advocated, improving the thermal insulation performance of building materials such as houses has become a major issue. At present, the commonly used thermal insulation materials mainly include polymer organic and inorganic materials. Among them, polymer thermal insulation materials mainly include expanded polystyrene foam board and foamed polyurethane board. This kind of material is light in weight and good in heat preservation, but its fire resistance is poor, and it will produce toxic smoke after fire, which poses a great threat to the human body, and has poor aging resistance, high cost, short life, and pollutes the environment. The inorganic therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B16/06C04B38/02C04B38/08C04B41/64
CPCC04B28/32C04B41/4927C04B41/64C04B2111/28C04B2111/27C04B2103/65
Inventor 马慧张纪阳尚庆芳李佳容吴文飞杨凯沙炯
Owner CHANGAN UNIV
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