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Method for preparing aerated board by utilizing multistage aluminum powder and aerated board prepared by using method

A technology of sheet and aluminum powder, applied in application, household appliances, ceramic products, etc., can solve the problems of fast reaction speed of aluminum powder and alkali, uniform dispersion of air bubbles unfavorable for hollow structure, adverse effect on mechanical strength of air-entrained concrete plates, etc. Achieve the effect of avoiding uneven distribution of bubbles, inhibiting condensation and hardening, and improving crack resistance and compression resistance.

Active Publication Date: 2022-02-22
四川滨水上锦绿色建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005]However, in order to accelerate the hardening and solidification of the embryo body, this technical solution stirs and pulps at 40-45°C, the stirring temperature is higher, and the reaction speed of aluminum powder and alkali is faster , which is not conducive to the uniform dispersion of air bubbles forming a hollow structure in the embryo body, which will have a certain adverse effect on the mechanical strength of the aerated concrete slab

Method used

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  • Method for preparing aerated board by utilizing multistage aluminum powder and aerated board prepared by using method
  • Method for preparing aerated board by utilizing multistage aluminum powder and aerated board prepared by using method
  • Method for preparing aerated board by utilizing multistage aluminum powder and aerated board prepared by using method

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Embodiment 1

[0037] Embodiment 1: a kind of method that utilizes multi-stage aluminum powder to prepare aerated sheet material, comprises the following steps:

[0038]S1 Mixing: Weigh 350kg of fly ash and 100kg of sand, mix them evenly, use a ball mill to grind them, and sieve them with a sieve with an aperture of 200μm. The particles with a particle size larger than 200μm continue to be ball-milled until they are not larger than 200μm; then add 25kg of gypsum, 200kg of lime powder, 2kg of ammonium acetate, 60kg of cement, 2kg of triethanolamine and 6kg of white carbon black were mixed evenly to obtain a mixture.

[0039] S2 pulping: Take 200g of aluminum powder with a particle size of 120μm-150μm, add 240g of aluminum powder with a particle size of 80μm-120μm and 360g of aluminum powder with a particle size of not more than 80μm, and mix evenly to prepare multi-level composite aluminum powder. Cool the water to 8°C with a refrigerator. Add 170kg of water at 8°C to the mixture prepared in...

Embodiment 2

[0043] The difference between embodiment 2 and embodiment 1 is that embodiment 2 does not add sodium lignosulfonate, and others are consistent with embodiment 1.

Embodiment 3

[0045] The difference between embodiment 3 and embodiment 1 is that no triethanolamine is added in embodiment 3, and the others are consistent with embodiment 1.

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Abstract

The invention discloses a method for preparing an aerated board by utilizing multistage aluminum powder and the aerated board prepared by using the method, and relates to the technical field of building materials. The method for preparing the aerated board by using the multistage aluminum powder comprises the following steps: S1, mixing: weighing fly ash and sand, adding board powder, and carrying out uniform mixing to obtain a mixture, wherein the board powder comprises the following raw materials: gypsum, lime powder, ammonium acetate and cement; S2, slurrying: adding water and aluminum powder into the mixture, and carrying out stirring to prepare slurry; S3, foaming and standing: injecting the slurry into a mold, and carrying out foaming and standing successively to obtain a board blank; and S4, steam curing: cutting the board blank into concrete blocks, transferring the concrete blocks into a still kettle, and performing steam curing to obtain the aerated board. The method for preparing the aerated board by using the multistage aluminum powder has the advantage of improving the mechanical strength of the produced board. The aerated board prepared by using the method for preparing the aerated board from the multistage aluminum powder has the advantage of high mechanical strength.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing an air-entraining board by using multi-stage aluminum powder and the prepared air-entraining board. Background technique [0002] Autoclaved aerated concrete slab, referred to as aerated slab, is a high-performance lightweight concrete panel made of high-quality silica sand or fly ash, lime, cement and aluminum powder, etc., after foaming and high-pressure steam curing. Quality planks. Aerated panels have the advantages of light weight, good thermal insulation, good sound insulation, convenient construction, durable fire resistance, small freeze-thaw loss, and environmental protection. They are gradually used in buildings in severe cold areas and buildings in earthquake-resistant areas. [0003] The existing method for preparing aerated plates is generally to first prepare raw materials such as fly ash, aluminum powder and lime into a slurry, th...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B38/02C04B14/06C04B24/12C04B24/18C04B22/04
CPCC04B28/14C04B38/02C04B2201/50C04B18/08C04B14/06C04B2/02C04B24/12C04B7/02C04B22/04C04B24/18C04B24/122C04B40/024Y02W30/91
Inventor 梅小明陈豪秦燕东
Owner 四川滨水上锦绿色建材有限公司
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