Waterborne mold release capable of eliminating air bubbles on concrete surface and preparation method of waterborne mold release

A concrete surface and release agent technology, applied in the field of concrete, can solve the problems of many surface air bubbles and low cost, and achieve the effects of eliminating air bubbles, reducing costs, and increasing the stability of use

Inactive Publication Date: 2019-12-20
SHAANXI YOUBANG NEW MATERIAL TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a water-based release agent that can eliminate the air bubbles on the concrete surface, which can solve the problem of excessive air bubbles on the concrete surface after demoulding, and has low cost and can be quickly applied to the site

Method used

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  • Waterborne mold release capable of eliminating air bubbles on concrete surface and preparation method of waterborne mold release
  • Waterborne mold release capable of eliminating air bubbles on concrete surface and preparation method of waterborne mold release
  • Waterborne mold release capable of eliminating air bubbles on concrete surface and preparation method of waterborne mold release

Examples

Experimental program
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preparation example Construction

[0037] see figure 1 , the preparation method of the water-based release agent that can eliminate air bubbles on the concrete surface, in terms of mass percentage, includes the following components: 20-40% simethicone oil, 0.05-0.25% Span-20, 0.10-0.30 % of Tween-20, 0.05-0.07% of sodium dodecylsulfonate, 0.05-2.0% of compound modification components, and the balance is water; the compound modification components include tributyl phosphate and Ethylparaben;

[0038] 1) Prepare liquid A with Tween-20, sodium dodecylsulfonate, and water, and take it at any time;

[0039] 2) Stir simethicone and Span-20 evenly in an environment of 40-60°C until the mixture is milky white to make liquid B;

[0040] 3) Slowly add liquid A to liquid B, and stir while adding at a temperature of 40-60°C until liquid A is completely added, then add compound modified components in turn, stir and mix evenly to obtain a water-based release agent ;

[0041] The water-based mold release agent is directly...

Embodiment 1

[0053] A water-based mold release agent for solving excessive air bubbles on the surface of concrete, based on the total mass of the water-based mold release agent, the raw material components of the water-based mold release agent include 20% to 40% of simethicone, 0.05% ~0.25% Span-20, 0.10%~0.30% Tween-20, 0.05%~0.07% Sodium Lauryl Sulfate, and 0.03% Tributyl Phosphate and 0.02% Ethylparaben.

[0054] Its preparation method is:

[0055] 1) Prepare liquid A with Tween-20, sodium dodecylsulfonate, and water, and take it at any time;

[0056] 2) Stir simethicone and Span-20 evenly in an environment of 40-60°C until the mixture is milky white to make liquid B;

[0057] 3) Slowly add liquid A to liquid B, and stir while adding at a temperature of 40-60°C until liquid A is completely added, then add compound modified components (tributyl phosphate, paraben B) in sequence ester), stirred and mixed evenly to obtain a water-based release agent.

[0058] The various components in t...

Embodiment 2

[0067] The difference between Example 2 and Example 1 lies in the compounded modified components, specifically the compounded modified components also include pH regulators, thickeners and metal ion shielding agents; the mass percentage of each component is: 0.01 ~0.8% tributyl phosphate, 0.01~0.5% ethylparaben, 0.01~0.2% pH regulator, 0.01~0.4% thickener and 0.01~0.3% metal ion shielding agent; thickening The agent can improve the wall-hanging property of the water-based release agent and increase the stability of the product, so that the release agent will not be lost during the vibration process.

[0068] Wherein, the pH regulator is a sodium hydroxide solution with a mass concentration of 2-10%, the thickener is a carboxymethyl cellulose solution with a mass concentration of 2-5%, and the metal ion shielding agent is EDTA.

[0069] By compounding the modified components and replacing the compounded modified components in Example 1, a water-based release agent with mold rel...

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Abstract

The invention discloses a waterborne mold release capable of eliminating air bubbles on a concrete surface. The waterborne mold release is prepared from the following raw materials in percentage by mass: 20-40% of dimethyl silicon oil, 0.05-0.25% of Span-20, 0.10-0.30% of Tween-20, 0.05-0.07% of sodium dodecyl sulfate, 0.05-2.0% of compound modified component and the balance of water; the compoundmodified component comprises tributyl phosphate and ethylparaben. The waterborne mold release disclosed by the invention is a milk white liquid, is good in stability, free of pollution to the environment, capable of improving the durability and beauty of steam-cured concrete and free of corrosion to reinforcing steel bars; and the waterborne mold release is simple in preparation method and greatly reduced in cost as comparison with other products in the same industry, can be used after being diluted with water to a certain proportion and can solve the problem of excessive air bubbles on a concrete molding surface with extremely low economic cost.

Description

technical field [0001] The invention belongs to the technical field of concrete, and relates to a water-based release agent capable of eliminating air bubbles on the surface of concrete and a preparation method thereof. Background technique [0002] With the rise of the concrete admixture industry, various water reducers began to be used in concrete mixtures on a large scale, making the cement concrete industry develop unprecedentedly. Nowadays, polycarboxylate superplasticizer is the most widely used, most widely used, and has the greatest development potential. The use of polycarboxylate superplasticizer allows many advantages of concrete to be developed. However, due to the certain air-entraining properties of polycarboxylate superplasticizer and other admixtures, a certain degree of air bubbles are often introduced into the concrete mixture during use, especially after demoulding, a large number of air bubbles often appear on the surface of cement concrete Bubbles, whic...

Claims

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Application Information

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IPC IPC(8): C10M173/02C10N40/36
CPCC10M173/02C10M2207/283C10M2219/044C10M2223/04C10M2229/0415
Inventor 徐一伦何廷树杨仁和钱强
Owner SHAANXI YOUBANG NEW MATERIAL TECH
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