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Foaming agent used in ultra-low density anti-seepage foamed concrete, and preparation method thereof

A foamed concrete, ultra-low density technology, applied in the field of foaming agents, can solve the problems of high bubble water content and open porosity, increase in the number of capillary pores in the base material, lack of anti-seepage function, etc., to shorten production time, and Good workability and manpower saving effect

Inactive Publication Date: 2012-02-08
梁材
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing foaming agents for foamed concrete have low foaming multiples, large water consumption, and high water content and open cell ratio of the bubbles. Because of the high water content in the bubbles, the weight of a single bubble is relatively large, which affects the relationship between the bubbles and the air bubbles. The structure is piled up in the concrete substrate between the air bubbles, and the volatilization of excess water will greatly increase the number of capillary pores in the substrate. Foamed concrete products do not have anti-seepage function, and additional waterproof and anti-seepage materials need to be added

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to (mass ratio) fatty alcohol polyoxyethylene ether sodium sulfate (AES) 8.5-10%, sodium dodecyl sulfate (K12) 2%, sodium dodecylbenzenesulfonate (DBS) 3.5%, pure acrylic or Styrene-acrylic emulsion 6%, fatty alcohol polyoxyethylene ether (AEO) 3.5%, hydroxyethyl cellulose (HEC) or hydroxypropyl methyl cellulose (HPMC) 1%, modified silicone resin or modified nano-bentonite 0.5% %, the proportion of thickener 0.15% and the balance of water is ready for raw materials. First, add hydroxyethyl cellulose or hydroxypropyl methyl cellulose to 25 times the mass of water and soak for 20-30 minutes to make a glue, then add fatty alcohol polyoxyethylene ether sodium sulfate and sodium lauryl sulfate in sequence , sodium dodecylbenzene sulfonate and an appropriate amount of water, heated in a water bath at a temperature of 30°C-50°C for 10-15min and kept stirring, after standing for 5min, stir and add pure acrylic emulsion or styrene-acrylic emulsion, fat Alcohol polyoxy...

Embodiment 2

[0034] According to (mass ratio) fatty alcohol polyoxyethylene ether sodium sulfate (AES) 10.5-12%, sodium dodecyl sulfate (K12) 2.5%, sodium dodecylbenzenesulfonate (DBS) 4%, pure acrylic or Styrene-acrylic emulsion 8-10%, fatty alcohol polyoxyethylene ether (AEO) 4%, hydroxyethyl cellulose (HEC) or hydroxypropyl methyl cellulose (HPMC) 0.5%, modified silicone resin or modified nano Prepare the raw materials in proportions of 1.5% bentonite, 0.1% thickener and the balance water. First, add hydroxyethyl cellulose or hydroxypropyl methyl cellulose to 25 times the mass of water and soak for 20-30 minutes to make a glue, then add fatty alcohol polyoxyethylene ether sodium sulfate and sodium lauryl sulfate in sequence , sodium dodecylbenzenesulfonate and appropriate amount of water, heated in a water bath at a temperature of 30°C-50°C for 10-15min and kept stirring, after standing for 5min, stir and add pure acrylic or styrene-acrylic emulsion, fatty alcohol in turn Polyoxyethyle...

Embodiment 3

[0036]According to (mass ratio) fatty alcohol polyoxyethylene ether sodium sulfate (AES) 12.5-14%, sodium dodecyl sulfate (K12) 3%, sodium dodecylbenzenesulfonate (DBS) 1.5%, pure acrylic or Styrene-acrylic emulsion 8-10%, fatty alcohol polyoxyethylene ether (AEO) 4%, hydroxyethyl cellulose (HEC) 0.2%, modified silicone resin or modified nano-bentonite 2.5%, thickener 0.1% and the rest The ratio of the amount of water to prepare the raw materials. First, add hydroxyethyl cellulose or hydroxypropyl methyl cellulose to 25 times the mass of water and soak for 20-30 minutes to make a glue, then add fatty alcohol polyoxyethylene ether sodium sulfate and sodium lauryl sulfate in sequence , sodium dodecylbenzenesulfonate and appropriate amount of water, heated in a water bath at a temperature of 30°C-50°C for 10-15min and kept stirring, after standing for 5min, stir and add pure acrylic or styrene-acrylic emulsion, fatty alcohol in turn Polyoxyethylene ether, modified resin or modif...

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Abstract

The invention relates to a foaming agent used in ultra-low density anti-seepage foamed concrete, and a preparation method thereof. The foaming agent comprises components of, by mass: 8 to 18 parts of sodium polyoxyethylene fatty alcohol sulfate, 0.1 to 7 parts of sodium dodecylsulfate, 0.5 to 7 parts of sodium dodecylbenzene sulfonate, 4 to 15 parts of pure acrylic emulsion or styrene-acrylate emulsion, 3 to 6 parts of fatty alcohol polyoxyethylene ether, 0.5 to 2 parts of hydroxyethyl cellulose or hydroxy propyl methylcellulose, 0.1 to 5 parts of modified silicon resin or modified nano-gradebentonite, 0.1 to 0.5 parts of a thickener, and balance of water. The anti-seepage foamed concrete foaming agent provided by the invention has stable property, high foaming multiple, and good workability with a substrate. The agent can be used in a foamed concrete product with a density of 100 to 600kg / m<3>. The raw materials are easy to obtain, and the cost is low. The foaming agent can be stored for a long term with out deteriorating. With the agent, foamed concrete properties such as strength and softening coefficient can be improved.

Description

technical field [0001] The invention relates to a foaming agent, in particular to a foaming agent for ultra-low density foam concrete and a preparation method thereof. Background technique [0002] In addition to the performance of heat preservation and heat insulation, foam concrete also has excellent properties such as energy absorption, shock resistance and explosion resistance, sound insulation and sound absorption, electromagnetic wave absorption, water permeability and filtration, impermeability and moisture resistance, water retention and greening, fire resistance, fire prevention, impact resistance, and floating load. Foaming agent is one of the main materials for preparing foamed concrete. The quality of foaming agent and foaming components directly affect the performance of foamed concrete and determine the direction and field of use of foamed concrete. At present, the foaming agents for foam concrete in my country are the first-generation rosin, the second-generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B24/40C04B24/38
Inventor 梁材
Owner 梁材
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