Assembly type magnesium-based cement foaming light board and preparation method thereof

A technology of cement foaming and cement foaming layer, which is applied in the field of preparation of prefabricated magnesium-based cement foaming lightweight panels, can solve the problems of insufficient hydration and low strength, and achieve good thermal insulation and sound insulation effects, and anti-corrosion Good impact performance and low thermal conductivity

Active Publication Date: 2017-05-31
王常清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports to improve the shortcomings of magnesium oxysulfide cement, such as low strength and insufficient hydration, and make them into cement boards for industrialization.

Method used

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  • Assembly type magnesium-based cement foaming light board and preparation method thereof
  • Assembly type magnesium-based cement foaming light board and preparation method thereof
  • Assembly type magnesium-based cement foaming light board and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for preparing a prefabricated magnesium-based cement foamed lightweight board, the method specifically includes the following steps:

[0036] (a) Preparation of magnesium-based foamed cement

[0037] 65 kg of magnesia salt cement, 3 kg of foam stabilizer and 5 kg of foaming agent, add water according to the water-cement ratio of 0.45, and stir to make magnesium-based cement foam slurry. The foam stabilizer is silicone amide; the foaming agent is sodium lauryl sulfate.

[0038] The preparation method of the magnesia salt cement is as follows: 100-200 mesh MgO, 100-200 mesh MgSO 4 and H 2 O, the three are mixed according to the ratio of the amount of substances of 9:1:25, and then add the inducer, the addition of the inducer is MgO, MgSO 4 and H 2 O 1 wt% of the total mass of the three, stirring for more than 24 hours, drying, grinding, and passing through a 200-mesh sieve to obtain magnesia salt cement.

[0039] The preparation method of the inducer is as f...

Embodiment 2

[0049] The difference between this embodiment and embodiment 1 is:

[0050] The inducer is composed of A component and B component, and the preparation method of A component is as follows: 200-400 mesh talcum powder is added to the vinegar-acrylic emulsion, and the mass ratio of the talc powder to the vinegar-acrylic emulsion is 8:27, Stir, be heated to 60 ℃ and keep 4 hours, filter and dry; Join in the tannic acid aqueous solution in the obtained solid product, the massfraction of tannic acid in the tannic acid aqueous solution is 10wt%, the mass ratio of solid product and tannic acid aqueous solution The ratio is 1:30, heated to 100°C and kept for 5 hours, filtered, dried and pulverized, and passed through a 100-mesh sieve to obtain component A; the preparation method of component B is as follows: add 200-400-mesh fly ash to three In the ethanolamine aqueous solution, the mass fraction of the triethanolamine aqueous solution is 5wt%, the mass ratio of the fly ash to the trie...

Embodiment 3

[0053] The difference between this embodiment and embodiment 2 is:

[0054] (a) Preparation of magnesium-based foamed cement

[0055] 65 kg of magnesia salt cement, pre-treated fly ash, 3 kg of foam stabilizer and 5 kg of foaming agent, add water according to the water-cement ratio of 0.45, and stir to make magnesium-based cement foam slurry. The amount of fly ash after pretreatment is 10wt% of the mass of MgO used in the preparation of magnesia salt cement.

[0056] The preparation method of the fly ash after the pretreatment is as follows: 200-400 mesh fly ash is added in the triethanolamine aqueous solution, the mass fraction of the triethanolamine aqueous solution is 3wt%, and the mass ratio of the fly ash and the triethanolamine aqueous solution is 1: 12. Stir, heat to 70°C and keep for 12 hours, filter and dry; add the obtained solid product to the silane coupling agent solution, the mass ratio of the solid product to the silane coupling agent solution is 1:16, silane c...

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Abstract

The invention discloses an assembly type magnesium-based cement foaming light board and a preparation method thereof. The assembly type magnesium-based cement foaming light board comprises a first assembly light board body and a second assembly light board body. The first assembly light board body comprises a first magnesium-based cement fiber material surface layer and a first magnesium-based cement foaming layer, and the second assembly light board body comprises a second magnesium-based cement fiber material surface layer and a second magnesium-based cement foaming layer. The preparation method for the assembly type magnesium-based cement foaming light board comprises the following steps of (a) preparation of a magnesium-based cement foaming material; (b) preparation of a magnesium-based cement fiber material; (c) preparation of the first assembly light board body; (d) preparation of the second assembly light board body; and (e) preparation of the assembly type magnesium-based cement foaming light board. The assembly type magnesium-based cement foaming light board prepared through the preparation method is simple in preparation line, energy is saved, the environment is protected, waste is utilized, needed raw materials are cheap and easy to obtain, and the product is low in production cost.

Description

technical field [0001] The invention relates to the field of building material construction, in particular to a preparation method of an assembled magnesium-based cement foamed lightweight board. Background technique [0002] Inorganic cementitious materials with calcium salts as hydration products are widely used in civil engineering such as buildings, roads, bridges, tunnels, airports and dams. Common calcium cementitious materials include lime, gypsum, Portland cement, Aluminate cement and sulfoaluminate cement, calcareous cementitious materials have made significant contributions to the development of modern civil engineering. At present, most of the cement foam boards made of calcareous cementitious materials on the market use lime, gypsum and Portland cement as the main raw materials. This product has relatively high early strength, large later strength attenuation, poor thermal insulation performance, and low strength. Disadvantages such as poor durability. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C2/04C04B28/30
CPCE04C2/049C04B28/30C04B2111/40C04B24/16C04B16/0641C04B2103/48C04B38/10Y02W30/91
Inventor 王炳南夏广宁王常青
Owner 王常清
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