Cement foaming agent preparation process

The invention relates to a cement foaming agent and a preparation process technology, which is applied in the field of foaming agents, and can solve the problems of small foaming multiple and unstable foaming agent, and achieve the improvement of cell density, the reduction of foaming dosage, and the reduction of cell diameter. Effect

Inactive Publication Date: 2015-10-14
凤阳九龙新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a preparation process of cement foaming agent, which solves the problems of unstable traditional foaming agent and small foaming multiple

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of cement foaming agent preparation technology is characterized in that, described processing step is:

[0016] (1) The modification process of nanometer silicon dioxide: using n-octanol as a modifier, add 5g of silicon dioxide powder in the distillation bottle, then add 30ml of n-octanol, heat and reflux for 4h, and then separate the silicon dioxide, and extracted with acetone in a Soxhlet extractor for 8 hours, and finally the esterified silica was dried at 60°C for 12 hours;

[0017] (2) Composite process of foaming agent: Weigh 1g of foaming agent AC and dissolve it in 25ml of dimethyl sulfoxide (DMSO), weigh 1g of nano-silica modified in step (1), and mix the silica It is impregnated and compounded with foaming agent AC. After impregnated for 12 hours, it is vacuum-dried at 60°C for 12 hours to obtain a foaming agent product.

[0018] Wherein, in the step (1) nano-silica modification process, polyethylene glycol can also be selected as the modifier, an...

Embodiment 2

[0020] A kind of cement foaming agent preparation technology is characterized in that, described processing step is:

[0021] (1) Modification process of nano-silicon dioxide: using n-octanol as modifier, add 8g of silica powder in the distillation bottle, then add 40ml of n-octanol, heat and reflux for 4.5h, and then separate the silica , and extracted with acetone in a Soxhlet extractor for 9 hours, and finally the esterified silica was dried at 65°C for 13 hours;

[0022] (2) Composite process of foaming agent: Weigh 1.5g of foaming agent AC and dissolve it in 27ml of dimethyl sulfoxide (DMSO), weigh 1.2g of nano-silica modified in step (1), and dilute Silicon oxide and foaming agent AC were impregnated and composited, and after immersion for 13 hours, vacuum-dried at 65° C. for 13 hours to obtain foaming agent products.

[0023] Wherein, in the step (1) nano-silica modification process, polyethylene glycol can also be selected as the modifier, and the polyethylene gl...

Embodiment 3

[0025] A kind of cement foaming agent preparation technology is characterized in that, described processing step is:

[0026] (1) The modification process of nanometer silicon dioxide: using n-octanol as a modifier, add 10g of silicon dioxide powder in the distillation bottle, then add 45ml of n-octanol, heat and reflux for 5h, and then separate the silicon dioxide, and extracted with acetone in a Soxhlet extractor for 10 hours, and finally the esterified silica was dried at 70°C for 14 hours;

[0027] (2) Composite process of foaming agent: Weigh 2g of foaming agent AC and dissolve it in 30ml of dimethyl sulfoxide (DMSO), weigh 1.5g of nano-silica modified in step (1), and dissolve the Silicone and foaming agent AC are impregnated and composited, and after immersion for 14 hours, vacuum-dried at 70° C. for 15 hours to obtain foaming agent products.

[0028] Wherein, in the step (1) nano-silica modification process, polyethylene glycol can also be selected as the modifier,...

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PUM

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Abstract

The present invention provides a cement foaming agent and the cement foaming agent is formed by compounding modified nano-silica and a foaming agent AC. After foaming, the cell diameter is significantly reduced while the cell density is relatively improved. The nano-silica has particular morphological characteristics so that the nanocomposite foaming agent can be dispersed more uniformly into the cement. The cement foaming agent provided by the invention achieves uniform dispersion into the cement so as to reduce the amount of local foaming, and meanwhile the composite foaming agent has the advantage of a nano-composite material.

Description

technical field [0001] The invention relates to a foaming agent, in particular to a preparation process of a cement foaming agent. Background technique [0002] Cement foaming agent, also known as foam concrete foaming agent, is an admixture that can reduce the surface tension of a liquid and produce a large amount of uniform and stable foam for the production of foamed concrete. Foaming agent is a kind of substance that can make its aqueous solution produce a large amount of foam when mechanical force is introduced into the air. This kind of substance is surfactant or surface active substance. The essence of the foaming agent is its surface activity. Without surface activity, it cannot be foamed, and it cannot be a foaming agent. Surface activity is the core of foaming. In industrial production and daily civilian use, the uses of foaming agents vary widely, and different application fields have different technical requirements for foaming agents. For example, the foami...

Claims

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Application Information

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IPC IPC(8): C04B24/12C04B22/06
Inventor 李仁武李让全李稳
Owner 凤阳九龙新型建材有限公司
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