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Low-sensitivity foam concrete foaming agent and preparation method of foaming agent

A foamed concrete and foaming agent technology, applied in the field of building material admixtures, can solve the problems of increased bulk density of flowing foamed concrete, decreased fluidity of foamed concrete, unfavorable product quality control, etc., and achieves good foaming power and easy speed control. , suitable for large-scale promotion and use

Active Publication Date: 2017-12-26
武汉优城科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing foaming agents are sensitive to the amount of addition. A slightly higher amount of addition will lead to a decrease in the fluidity of the foam concrete and a lower bulk density of the foam concrete; a lower amount of addition will increase the bulk density of the flowing foam concrete and enhance its fluidity, which is very unfavorable for the product. Quality Control

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0015] A low-sensitivity foam concrete blowing agent, its preparation method comprises the following steps:

[0016] (1) Weigh each raw material component according to the following parts by weight: 50 parts of aliphatic polyoxyethylene ether, 18 parts of sulfamic acid, 3 parts of composite catalyst, 20 parts of saturated sodium hydroxide solution, modified silicone resin polyether microemulsion 2 parts, 80 parts of water, wherein the molar ratio of the composite catalyst is n (urea): n (ferric chloride hexahydrate)=2:1;

[0017] (2) Under the protection of nitrogen, the fatty alcohol polyoxyethylene ether, sulfamic acid, and composite catalyst were heated up to 95°C while stirring, then kept stirring for 2 hours, and then cooled to a temperature of 50°C;

[0018] (3) Add saturated sodium hydroxide solution while stirring in the product that step (2) obtains, carry out cooling simultaneously, make temperature not exceed 60 ℃.

[0019] (4) add water to the product obtained in ...

Embodiment 2

[0021] A low-sensitivity foam concrete blowing agent, its preparation method comprises the following steps:

[0022] (1) Weigh each raw material component according to the following parts by weight: 50 parts of fatty alcohol polyoxyethylene ether, 16 parts of sulfamic acid, 4 parts of composite catalyst, 25 parts of saturated sodium hydroxide solution, modified silicone resin polyether microemulsion 2.5 parts, 85 parts of water. Wherein the molar ratio of the composite catalyst is n (urea): n (ferric chloride hexahydrate)=1.5:1;

[0023] (2) Under the protection of nitrogen, mix the aliphatic polyoxyethylene ether, sulfonating agent, and catalyst and heat up to 100°C while stirring, then keep stirring for 3 hours, and then cool down to 55°C;

[0024] (3) adding saturated sodium hydroxide solution while stirring to the product obtained in step (2), while cooling so that the temperature does not exceed 60°C;

[0025] (4) add water to the product obtained in step (3) to dilute,...

Embodiment 3

[0027] A low-sensitivity foam concrete blowing agent, its preparation method comprises the following steps:

[0028] (1) Weigh each raw material component according to the following parts by weight: 45 parts of fatty alcohol polyoxyethylene ether, 19 parts of sulfamic acid, 3.5 parts of composite catalyst, 17 parts of saturated sodium hydroxide solution, modified silicone resin polyether microemulsion 2 parts, 80 parts of water. Wherein the molar ratio of the composite catalyst is n (urea): n (ferric chloride hexahydrate)=1:1;

[0029] (2) Under the protection of nitrogen, mix the aliphatic polyoxyethylene ether, sulfonating agent, and catalyst and heat up to 105°C while stirring, then keep stirring for 1.5 hours, and then cool down to 45°C;

[0030] (3) adding saturated sodium hydroxide solution while stirring to the product obtained in step (2), while cooling so that the temperature does not exceed 60°C;

[0031] (4) add water to the product obtained in step (3) to dilute,...

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Abstract

The invention discloses a low-sensitivity foam concrete foaming agent and a preparation method of the foaming agent. The foaming agent is mainly prepared by synthesizing an anionic polyether surfactant from 45-60 parts by weight of aliphatic polyoxyethylene ether, 15-20 parts by weight of a sulfonating agent, 2-5 parts by weight of a catalyst and 15-25 parts of a saturated sodium hydroxide solution, adding 80-90 parts by weight of water for dilution, and then performing compounding with 1-3 parts by weight of a foam stabilizer, and the final product has a PH value from 9 to 12. The low-sensitivity foam concrete foaming agent provided by the invention has good stability and low sensitivity, and when the addition amount of the foaming agent changes in a small range, the change of the fluidity of the foam concrete prepared with the foaming agent is small, the volume weight fluctuation is small, and the quality control of the product is facilitated.

Description

technical field [0001] The invention belongs to the field of building material admixtures, in particular to a low-sensitivity foam concrete foaming agent and a preparation method thereof. Background technique [0002] Foamed concrete refers to a porous concrete with a large number of closed pores inside that is formed by introducing a certain amount of air bubbles into cement slurry or cement mortar, and pouring and hardening after mixing evenly. As a key factor in the manufacture of foam concrete, foam concrete foaming agent plays a vital role in the performance of foam concrete. There are various foaming forms of foam concrete, mainly including physical foaming method, aerated foaming method, chemical foaming method and stirring foaming method. Among them, stirring foaming method requires less equipment, simple process and simple operation, especially It is suitable for on-site mixing construction operations, so it has been widely used. [0003] The stirring and foaming ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C04B103/42
CPCC04B24/42C04B40/0039C04B2103/42C04B2201/20C04B24/32C04B22/141C04B24/126C04B22/12C04B22/062C04B22/002
Inventor 陈健代柱端周晓阳董耀武
Owner 武汉优城科技有限公司
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