Expanding type concrete mold releasing agent and preparation method thereof

A concrete release agent and intumescent technology, applied in the field of concrete release agent and its preparation, can solve the problems of affecting appearance and maintenance function, easy to tear film layer, etc., and achieve the effects of low cost, convenient application and convenient cleaning

Active Publication Date: 2011-11-02
安徽维东建材股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the surface of the formwork is rough or old formwork is used, it is easy to tear the film layer during demoulding, which will affect the appearance and maintenance function
At the same time, the release agent utilizes the saponification of fatty acid and soda ash, and is essentially a soap release agent, which has the disadvantages of soap release agents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The distribution ratio of each component in this embodiment by weight is: 12 parts of 200 mesh sodium bentonite, 0.5 part of stearic acid, 15 parts of II grade fly ash, 15 parts of ethanol with a mass percentage concentration of 95%, and the modulus is 2.5 0.3 parts of liquid water glass, 3 parts of nitric acid with a mass percent concentration of 5%, and 55 parts of water. Prepare as follows:

[0026] 1. Heat the ethanol water bath to 60°C, add stearic acid into the hot ethanol and stir to dissolve it, and store it at a constant temperature for later use;

[0027] 2. Add bentonite to 40 parts of water and stir evenly, then add nitric acid into it and stir evenly, after standing for 60 minutes, add it to the stearic acid-dissolved ethanol solution prepared in step 1, stir while adding Evenly, after cooling to room temperature, add fly ash, stir while adding to make it evenly mixed solution;

[0028] 3. Add liquid water glass to 15 parts of water and stir to make it co...

Embodiment 2

[0031] The distribution ratio of each component of the present embodiment by weight is: 16 parts of 200 mesh sodium bentonite, 1.1 parts of stearic acid, 5 parts of III fly ash, 21.4 parts of ethanol with a mass percentage concentration of 95%, and a modulus of 2.8 0.8 parts of liquid water glass, 4.8 parts of nitric acid with a mass percent concentration of 5%, and 50.6 parts of water. Prepare as follows:

[0032] 1. Heat the ethanol water bath to 60°C, add stearic acid into the hot ethanol and stir to dissolve it, keep it at constant temperature for later use;

[0033] 2. Add bentonite to 36 parts of water and stir evenly, then add nitric acid into it and stir evenly, after standing for 60 minutes, add it to the stearic acid-dissolved ethanol solution prepared in step 1, and stir while adding Evenly, after cooling to room temperature, add fly ash, stir while adding to make it evenly mixed solution;

[0034] 3. Add liquid water glass to 14.6 parts of water and stir to make ...

Embodiment 3

[0037] The distribution ratio of each component in this embodiment by weight is: 20 parts of 400 mesh sodium bentonite, 2 parts of stearic acid, 6.1 parts of class II fly ash, 26 parts of ethanol with a concentration of 95% by mass, and the modulus is 3.0 1.5 parts of liquid water glass, 8 parts of nitric acid with a mass percent concentration of 5%, and 39 parts of water. Prepare as follows:

[0038] 1. Heat the ethanol water bath to 60°C, add stearic acid into the hot ethanol and stir to dissolve it, keep it at constant temperature for later use;

[0039] 2. Add bentonite to 30 parts of water and stir evenly, then add nitric acid into it and stir evenly. After standing for 60 minutes, add it to the stearic acid-dissolved ethanol solution prepared in step 1. Stir while adding to make it even , after cooling to room temperature, add fly ash, stir while adding to make it evenly mixed solution;

[0040] 3. Add liquid water glass to 9 parts of water and stir to make it complete...

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Abstract

The invention discloses an expanding type concrete mold releasing agent and a preparation method thereof. The expanding type concrete mold releasing agent comprises 12-20 parts of bentonite, 0.5-2 parts of stearic acid, 5-15 parts of coal ash, 15-26 parts of ethanol, 0.3-1.5 parts of liquid water glass, 3-8 parts of nitric acid and 39-55 parts of water. The mold releasing effect of the concrete mold releasing agent is achieved by control on expansion, after mold releasing, the surface of concrete is clean and dense; reinforcing steel bars cannot be polluted, cohesive force between concrete and the reinforcing steel bars is not affected; after the expanding type concrete mold releasing agent is coated, concrete pouring can be performed immediately or when the mold releasing agent is dry; formworks can be cleaned conveniently; the mold releasing agent can be coated conveniently and only needs to be coated once; the mold releasing agent has a certain maintenance function; cost is loweredbecause of the adoption of coal ash and other industrial byproducts; the mold releasing agent can be stored for a long term; and no environmental pollution is caused in the production and utilizationprocesses of the mold releasing agent.

Description

1. Technical field [0001] The invention relates to a concrete release agent and a preparation method thereof, in particular to an expansive concrete release agent and a preparation method thereof. 2. Background technology [0002] There are many types of existing concrete release agents, which can be divided into water-based release agents, oil-based release agents, paraffin-based release agents, emulsion-based release agents and specially formulated release agents according to the main constituent materials. [0003] There are deficiencies in these release agents in specific applications. For example, oil release agents are easy to contaminate the surface of concrete products, affect the appearance or cause the cement mortar or paint on the concrete surface to be weakly adhered; soap release agents The agent has poor water resistance and is not suitable for rainy season and winter construction, nor is it suitable for steam-cured concrete. The film-forming time is long and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/02C10N40/36B28B7/38
CPCC04B41/53
Inventor 詹炳根周万良朱大勇
Owner 安徽维东建材股份有限公司
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