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Method for improving stability of foaming agent

A foaming agent and stability technology, which is applied in the field of building material foam concrete, can solve the problems of low foaming ratio, high cost, poor foam stability, etc., and achieve the advantages of reduced bleeding rate, reduced settlement distance, and improved foam stabilization time Effect

Active Publication Date: 2016-06-08
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rosin-type foaming agent is the earliest foaming agent used. Its production process is simple, low cost, low price, and good compatibility with cement, but the disadvantage is poor foam volume and foam stability; protein foaming agent The foam has good stability and does not defoam for a long time, but the foaming ratio is low and the cost is high; the surfactant foaming agent has a large foaming volume and fast foaming, but the foam stability is poor
At present, rosin-type foaming agents still occupy part of the foaming agent market, but their poor foam stability seriously restricts their application in foamed concrete

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Commercially available rosin-type foaming agent 97.86g, gum arabic 0.02g, sucrose 0.4g, lauryl alcohol 0.2g, sodium lauryl sulfate 0.3g, lauryl dimethyl betaine 1.2g, vegetable protein extraction Material 0.02g. Weigh each component according to the above formula ratio, put the rosin foaming agent in the reaction kettle, then put it into a 60°C water bath for heating, and then sequentially add the weighed gum arabic, sucrose, sodium lauryl sulfate, Lauryl dimethyl betaine, vegetable protein extract and lauryl alcohol are successively added to the solution in the reaction kettle and fully stirred until uniform. Take out the solution and let it cool down to room temperature, then foam to test the foam stability.

[0017] Performance test: Take 10g of foaming agent and water to dilute at a mass ratio of 1:14, take 100ml of the diluted solution and place it in a 1000ml beaker, stir for 3min at a speed of 3600r / min until the foam volume is stable, and the surface is covered...

Embodiment 2

[0019] Commercially available rosin-type foaming agent 86.97g, gelatin 0.6g, carboxymethylcellulose 0.8g, gum arabic 1.6g, triethanolamine 0.02g, sodium dodecylbenzenesulfonate 0.01g, animal protein extract 3g, Vegetable protein extract 7g. Weigh each component according to the above formula ratio, put the rosin foaming agent in the reaction kettle, and then put it in a 22°C water bath for heating, and then successively add the weighed gelatin, carboxymethyl cellulose, gum arabic, ten Sodium dialkylbenzene sulfonate, animal protein extract, vegetable protein extract and triethanolamine are successively added to the solution in the reaction kettle and fully stirred until uniform. Take out the solution and let it cool down to room temperature, then foam to test the foam stability.

[0020] Performance test: Take 10g of foaming agent and water to dilute at a mass ratio of 1:14, take 100ml of the diluted solution and place it in a 1000ml beaker, stir for 3min at a speed of 3600r / ...

Embodiment 3

[0022] Commercially available rosin-type foaming agent 72.5g, gelatin 0.1g, gum arabic 1.6g, sucrose 5g, n-butanol 0.6g, triethanolamine 0.6g, sodium dodecylbenzenesulfonate 0.6g, dodecyl di Hydroxyethyl betaine 3g, octadecyl dihydroxyethyl betaine 2g, dodecyl dihydroxyethyl amine oxide 4g, vegetable protein extract 7g, animal protein extract 3g. Weigh each component according to the above formula ratio, put the rosin foaming agent in the reaction kettle, and then put it in a 40°C water bath for heating, and then successively add the weighed gelatin, gum arabic, sucrose, n-butanol, three Ethanolamine, Sodium Dodecylbenzene Sulfonate, Dodecyldihydroxyethyl Betaine, Octadecyldihydroxyethyl Betaine, Dodecyldihydroxyethylamine Oxide, Animal Protein Extract and Vegetable Add the protein extract to the reaction kettle solution one after another, and stir well until uniform. Take out the solution and let it cool down to room temperature, then foam to test the foam stability.

[002...

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Abstract

The invention relates to a method for improving stability of a foaming agent. A foam stabilizing substance A, a foam stabilizing substance B, a foam stabilizing substance C and a foam stabilizing substance D are added into the foaming agent. The addition amount of the foam stabilizing substance A accounts for 0.01-5% of the total material mass. The addition amount of the foam stabilizing substance B accounts for 0.01-8% of the total material mass. The addition amount of the foam stabilizing substance C accounts for 0.01-15% of the total material mass. The addition amount of the foam stabilizing substance D accounts for 0.01-12% of the total material mass. The foaming agent defoaming and foam stabilizing principle is sufficiently analyzed, and the method for effectively improving stability of the rosin foaming agent foam is provided on the basis of a large quantity of experiment researches. According to the method, by adding the foam stabilizing substances, the purpose of improving foam stability is achieved. The method is easy to operate, low in cost and obvious in effect.

Description

technical field [0001] The invention relates to a method for improving the stability of a foaming agent, which belongs to the field of building material foam concrete. Background technique [0002] In recent years, with the emphasis on high-rise buildings and building energy conservation, the foam concrete industry has been developing vigorously. However, foam concrete generally has low strength and product quality fluctuates greatly. The quality of foam concrete is largely determined by the quality of the foaming agent. . At this stage, there are many types of foaming agents on the market, generally divided into three types: rosin type, protein type and surfactant type. Rosin-type foaming agent is the earliest foaming agent used. Its production process is simple, low cost, low price, and good compatibility with cement, but the disadvantage is poor foam volume and foam stability; protein foaming agent The foam has good stability and does not defoam for a long time, but the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/34C04B103/48
CPCC04B40/0039C04B2103/48C04B24/34C04B24/10C04B24/02C04B24/16C04B24/123C04B24/14C04B24/383C04B24/122C04B24/20C04B24/121
Inventor 潘志华王向阳
Owner NANJING UNIV OF TECH
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