CN110591805A - Water-based release agent capable of eliminating air bubbles on concrete surface and preparation method thereof - Google Patents
Water-based release agent capable of eliminating air bubbles on concrete surface and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/283—Esters of polyhydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
- C10M2229/0415—Siloxanes with specific structure containing aliphatic substituents used as base material
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- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The invention discloses a water-based release agent capable of eliminating air bubbles on the surface of concrete, which is prepared from the following raw materials in percentage by mass: 20-40% of dimethyl silicone 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 compound modified component comprises tributyl phosphate and ethylparaben. The water-based release agent disclosed by the invention is a milky white liquid, has good stability, does not pollute the environment, can improve the durability and the attractiveness of the steam-cured concrete, and does not have a corrosion effect on reinforcing steel bars; the preparation method is simple, the cost is greatly reduced compared with other products in the same industry, the concrete can be diluted with water to a certain proportion for use, and the problem of excessive bubbles on the surface of the formed concrete is solved with extremely low economic cost.
Description
Technical Field
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
With the rise of the concrete admixture industry, various water reducing agents are applied to concrete mixtures on a large scale, so that the cement concrete industry is developed unprecedentedly. Nowadays, the water reducing agent is widely popularized and applied most, and the polycarboxylate water reducing agent with the greatest development potential is particularly well-defined, and the use of the polycarboxylate water reducing agent can develop many advantages of concrete. However, the polycarboxylic acid water reducing agent and other additives have certain air entraining property, so that certain degree of air bubbles are often introduced into a concrete mixture during use, and particularly after demolding, a large amount of air bubbles often appear on the surface of cement concrete, so that the durability and the attractiveness of the concrete are seriously influenced, and the popularization and the application of the polycarboxylic acid water reducing agent are unfavorable.
At present, a plurality of construction units judge whether a release agent is good or bad only by the difficulty degree of the release agent, the influence of the release agent on the surface of a concrete product is often ignored, and a plurality of manufacturers only use waste engine oil as the release agent, but the aesthetic property of the surface of the concrete is greatly reduced, and the surface of the concrete is excessively dark and provided with bubbles. Although a series of excellent release agents exist at present, the cost is high, and the actual popularization is not facilitated.
Disclosure of Invention
The invention aims to provide the water-based release agent capable of eliminating the air bubbles on the surface of the concrete, which can solve the problem that the air bubbles on the surface of the concrete are too much after the surface of the concrete is released, has low cost and can be quickly applied to the field.
The invention is realized by the following technical scheme:
the water-based release agent capable of eliminating the air bubbles on the surface of concrete is prepared from the following raw materials in percentage by mass:
20-40% of dimethyl silicone 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 compound modified component comprises tributyl phosphate and ethylparaben;
wherein, Tween-20, sodium dodecyl sulfate and water are mixed to form solution A, and simethicone and Span-20 are mixed to form solution B; when in use, the A liquid and the B liquid are emulsified and mixed with the compound modification component.
Further, the compound modified component also comprises a pH regulator, a thickening agent and a metal ion shielding agent;
the pH regulator is a sodium hydroxide solution with the mass concentration of 2-10%, the thickening agent is a carboxymethyl cellulose solution with the mass concentration of 2-5%, and the metal ion shielding agent is EDTA.
Further, the compound modified component comprises: 0.01-0.8% of tributyl phosphate, 0.01-0.5% of ethylparaben, 0.01-0.2% of pH regulator, 0.01-0.4% of thickening agent and 0.01-0.3% of metal ion shielding agent;
further, the feed is prepared from the following raw materials in percentage by mass: 25 to 35 percent of dimethyl silicone oil, 0.06 to 0.08 percent of sodium dodecyl sulfate, 0.10 to 0.20 percent of Span-20, 0.20 to 0.30 percent of Tween-20, 0.4 to 2.0 percent of compound modified component and the balance of water.
Specifically, the solution A comprises 0.15-0.20% of Tween-20, 0.05-0.06% of sodium dodecyl sulfate and the balance of water;
the component of the liquid B comprises 30 to 40 percent of dimethyl silicone oil and 0.05 to 0.20 percent of Span-20.
Specifically, the component A comprises 0.25-0.30% of Tween-20, 0.06-0.07% of sodium dodecyl sulfate and the balance of water;
the component of the liquid B comprises 25 to 35 percent of dimethyl silicone oil and 0.1 to 0.2 percent of Span-20.
And the solution B needs to be fully stirred and mixed at the temperature of 40-60 ℃.
The kinematic viscosity range of the dimethyl silicone oil is 500-2000.
A preparation method of a water-based release agent capable of eliminating air bubbles on the surface of concrete comprises the following components in percentage by mass: 20-40% of dimethyl silicone 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 compound modified component comprises tributyl phosphate and ethylparaben;
1) tween-20, sodium dodecyl sulfate and water are prepared into solution A for use at any time;
2) uniformly stirring dimethyl silicone oil and Span-20 at the temperature of 40-60 ℃ until the mixed solution is milky to prepare a solution B;
3) slowly adding the solution A into the solution B, stirring while adding at the temperature of 40-60 ℃ until the solution A is completely added, then sequentially adding the compound modified components, and uniformly stirring and mixing to obtain a water-based release agent;
the water-based release agent is directly sprayed on the surface of a template, or is diluted with water to a certain proportion for use.
The compound modified component also comprises a pH regulator, a thickening agent and a metal ion shielding agent; the weight percentages of the components are as follows: 0.01-0.8% of tributyl phosphate, 0.01-0.5% of ethylparaben, 0.01-0.2% of pH regulator, 0.01-0.4% of thickening agent and 0.01-0.3% of metal ion shielding agent;
the pH regulator is a sodium hydroxide solution with the mass concentration of 2-10%, the thickening agent is a carboxymethyl cellulose solution with the mass concentration of 2-5%, and the metal ion shielding agent is EDTA.
Compared with the prior art, the invention has the following beneficial technical effects:
the separation of concrete and template in the traditional release agent must overcome the adhesive force between the template and hardened concrete or the cohesion force on the surface of concrete, and the release mechanism of the release agent comprises the following aspects: firstly, the release agent plays a role in lubricating between the template and the concrete and weakening the affinity between the template and the concrete so as to play a role in assisting in demoulding; secondly, the release agent is coated on the surface of the template to form a layer of film, and the release is assisted by the isolation effect; thirdly, the release agent and part of minerals or ions in the fresh concrete generate certain chemical reaction to generate substances with the isolation effect, thereby playing the role of helping the release. However, this is only convenient for demoulding, and still far from meeting the requirements of improving the aesthetic property and durability of the concrete surface.
The water-based release agent provided by the invention is improved by removing excessive bubbles based on the isolation effect of the traditional release agent, and dimethyl silicone oil and surfactants such as Span-20, Tween-20, sodium dodecyl sulfate and the like are sequentially subjected to oleophylic emulsification and hydrophilic emulsification to form emulsified dimethyl silicone oil to form uniformly distributed oil-in-water type stable emulsion. A certain amount of tributyl phosphate is added into the oil-in-water type dimethyl silicone oil which is stably emulsified and formed for modification, and the tributyl phosphate has good defoaming effect and is beneficial to eliminating bubbles on the surface of concrete; the ethylparaben can play a role in sterilization and corrosion prevention, the service and quality guarantee period of the product is prolonged, and the long-term storage of the product is facilitated; the thickening agent can improve the wall-hanging property of the water-based release agent, increase the use stability of the product and prevent the release agent from losing in the vibration process.
According to the invention, the obtained water-based release agent has a defoaming effect (the water-based release agent can change the surface tension of foam to integrate small bubbles into large bubbles and break the bubbles to achieve the defoaming effect) on the basis of the emulsified dimethyl silicone oil by compounding the modified components, so that the water-based release agent for solving the problem of excessive bubbles on the surface of concrete is obtained.
The water-based release agent disclosed by the invention is a milky white liquid, has good stability, does not pollute the environment, can improve the durability and the attractiveness of the steam-cured concrete, and does not have a corrosion effect on reinforcing steel bars; the preparation method is simple, the cost is greatly reduced compared with other products in the same industry, the concrete can be diluted with water to a certain proportion for use, and the problem of excessive bubbles on the surface of the formed concrete is solved with extremely low economic cost.
Drawings
FIG. 1 is a schematic flow chart of the preparation process of the present invention;
FIG. 2 is a graph comparing the mold release effect of the concrete prepared by the present invention.
Detailed Description
The present invention will now be described in further detail, with the understanding that the present invention is to be considered as illustrative and not restrictive.
The invention provides a water-based release agent capable of eliminating air bubbles on the surface of concrete, which is prepared from the following raw materials in percentage by mass:
20-40% of dimethyl silicone 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 compound modified component comprises tributyl phosphate and ethylparaben;
wherein, Tween-20, sodium dodecyl sulfate and water are mixed to form solution A, and simethicone and Span-20 are mixed to form solution B; when in use, the A liquid and the B liquid are emulsified and mixed with the compound modification component.
Referring to fig. 1, the preparation method of the aqueous release agent capable of eliminating the air bubbles on the surface of the concrete comprises the following components in percentage by mass: 20-40% of dimethyl silicone 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 compound modified component comprises tributyl phosphate and ethylparaben;
1) tween-20, sodium dodecyl sulfate and water are prepared into solution A for use at any time;
2) uniformly stirring dimethyl silicone oil and Span-20 at the temperature of 40-60 ℃ until the mixed solution is milky to prepare a solution B;
3) slowly adding the solution A into the solution B, stirring while adding at the temperature of 40-60 ℃ until the solution A is completely added, then sequentially adding the compound modified components, and uniformly stirring and mixing to obtain a water-based release agent;
the water-based release agent is directly sprayed on the surface of a template, or is diluted with water to a certain proportion for use.
Further, the compound modified component also comprises a pH regulator, a thickening agent and a metal ion shielding agent; the weight percentages of the components are as follows: 0.01-0.8% of tributyl phosphate, 0.01-0.5% of ethylparaben, 0.01-0.2% of pH regulator, 0.01-0.4% of thickening agent and 0.01-0.3% of metal ion shielding agent;
the pH regulator is a sodium hydroxide solution with the mass concentration of 2-10%, the thickening agent is a carboxymethyl cellulose solution with the mass concentration of 2-5%, and the metal ion shielding agent is EDTA.
Specifically, the feed is prepared from the following raw materials in percentage by mass: 25 to 35 percent of dimethyl silicone oil, 0.06 to 0.08 percent of sodium dodecyl sulfate, 0.10 to 0.20 percent of Span-20, 0.20 to 0.30 percent of Tween-20, 0.4 to 2.0 percent of compound modified component and the balance of water.
Specifically, the solution A comprises 0.15-0.20% of Tween-20, 0.05-0.06% of sodium dodecyl sulfate and the balance of water;
the component of the liquid B comprises 30 to 40 percent of dimethyl silicone oil and 0.05 to 0.20 percent of Span-20.
Specifically, the component A comprises 0.25-0.30% of Tween-20, 0.06-0.07% of sodium dodecyl sulfate and the balance of water;
the component of the liquid B comprises 25 to 35 percent of dimethyl silicone oil and 0.1 to 0.2 percent of Span-20.
Furthermore, the solution B needs to be fully stirred and mixed at the temperature of 40-60 ℃.
Specifically, the kinematic viscosity range of the dimethyl silicone oil is 500-2000, and preferably 500-550.
Specific examples are given below.
Example 1
The water-based release agent for solving the problem of excessive air bubbles on the surface of concrete comprises the following raw material components, by taking the total mass of the water-based release agent as a reference, 20-40% of dimethyl silicone oil, 0.05-0.25% of Span-20, 0.10-0.30% of Tween-20, 0.05-0.07% of sodium dodecyl sulfate, 0.03% of tributyl phosphate and 0.02% of ethylparaben.
The preparation method comprises the following steps:
1) tween-20, sodium dodecyl sulfate and water are prepared into solution A for use at any time;
2) uniformly stirring dimethyl silicone oil and Span-20 at the temperature of 40-60 ℃ until the mixed solution is milky to prepare a solution B;
3) and slowly adding the solution A into the solution B, stirring while adding at the temperature of 40-60 ℃ until the solution A is completely added, then sequentially adding the compound modified components (tributyl phosphate and ethylparaben), and uniformly stirring and mixing to obtain the water-based release agent.
The components in example 1 cooperate synergistically to act as both an emulsifying dimethicone and a stabilizing dimethicone.
In the embodiment 1 of the invention, the components A and B are prepared respectively, the solution A is added into the solution B, and the stable release agent is obtained after uniform stirring at a certain temperature.
The emulsified solution obtained in the embodiment 1 of the invention can be mixed with the compound modified component uniformly to obtain the water-based release agent with dual functions of releasing and defoaming. Diluting the mixture in a certain proportion (preferably 1:5), and spraying the diluted mixture on the surface of a template.
The dimethyl silicone oil is emulsified by surfactants such as Span-20, Tween-20, sodium dodecyl sulfate and the like to form emulsified dimethyl silicone oil, small droplets are uniformly distributed in water to form an oil-in-water type stable emulsion, and the emulsion is smeared on the surface of a template, so that the dispersed oil drops are dispersed on the surface of the template to effectively play an isolation role.
A certain amount of tributyl phosphate is added into the oil-in-water type dimethyl silicone oil which is stably emulsified and formed, and the tributyl phosphate has good defoaming effect and is beneficial to eliminating bubbles on the surface of concrete.
The ethylparaben can play a role in sterilization and corrosion prevention, prolong the service and quality guarantee period of the product and facilitate the long-term storage of the product.
Further, in example 1, the following raw material use ratios in table 1 are provided, wherein the amounts of the respective components are based on the total mass of the aqueous release agent.
Example 2
The difference between the embodiment 2 and the embodiment 1 is that the compound modified component further comprises a pH regulator, a thickening agent and a metal ion shielding agent; the weight percentages of the components are as follows: 0.01-0.8% of tributyl phosphate, 0.01-0.5% of ethylparaben, 0.01-0.2% of pH regulator, 0.01-0.4% of thickening agent and 0.01-0.3% of metal ion shielding agent; the thickening agent can improve the wall-hanging property of the water-based release agent, increase the use stability of the product and prevent the release agent from losing in the vibration process.
The pH regulator is a sodium hydroxide solution with the mass concentration of 2-10%, the thickening agent is a carboxymethyl cellulose solution with the mass concentration of 2-5%, and the metal ion shielding agent is EDTA.
And (3) mixing the compound modified component with the compound modified component in the alternative embodiment 1 to obtain the water-based release agent with the functions of releasing and defoaming.
Example 3
The formulation components and method of this example 3 are the same as in example 2.
The difference is that the solution B needs to be stirred and mixed uniformly at 40 ℃ before the next preparation and synthesis process can be carried out.
Example 4
The invention can be diluted with water to a certain proportion and then sprayed on the surface of a template for use, and the preferred dilution degree is 1: 5.
Comparative example
For comparison, the present invention prepares an aqueous release agent according to the above example ratio, and compares the use effect with the conventionally used waste engine oil type release agent, by spraying the waste engine oil and the present invention comparison on a formwork, pouring concrete with the same mix ratio and the same raw material in a square grinding tool, curing for 2d under the same conditions, and simultaneously releasing, the mold release effect is as shown in fig. 2 (left side is releasing using waste engine oil, right side is releasing using the aqueous release agent of the present invention): the practical comparison shows that the demolding effect of the demolding agent can be obviously seen, bubbles on the surface of concrete are eliminated, the integral durability of the concrete is improved, the brightness of the surface of the concrete can be improved, the attractiveness of the concrete is greatly improved, and the performance has great significance in practical application and construction processes.
The embodiments given above are preferable examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical characteristics of the technical scheme of the invention by a person skilled in the art belong to the protection scope of the invention.
Claims (10)
1. The water-based release agent capable of eliminating the air bubbles on the surface of concrete is characterized by being prepared from the following raw materials in percentage by mass:
20-40% of dimethyl silicone 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 compound modified component comprises tributyl phosphate and ethylparaben;
wherein, Tween-20, sodium dodecyl sulfate and water are mixed to form solution A, and simethicone and Span-20 are mixed to form solution B; when in use, the A liquid and the B liquid are emulsified and mixed with the compound modification component.
2. The aqueous release agent capable of eliminating the air bubbles on the surface of the concrete according to claim 1, wherein the compound modification component further comprises a pH regulator, a thickening agent and a metal ion shielding agent;
the pH regulator is a sodium hydroxide solution with the mass concentration of 2-10%, the thickening agent is a carboxymethyl cellulose solution with the mass concentration of 2-5%, and the metal ion shielding agent is EDTA.
3. The aqueous release agent capable of eliminating the air bubbles on the surface of the concrete according to claim 1 or 2, wherein the compound modification component comprises: 0.01-0.8% of tributyl phosphate, 0.01-0.5% of ethylparaben, 0.01-0.2% of pH regulator, 0.01-0.4% of thickening agent and 0.01-0.3% of metal ion shielding agent.
4. The aqueous release agent capable of eliminating the air bubbles on the surface of the concrete as claimed in claim 1 or 2, which is prepared from the following raw materials in percentage by mass: 25 to 35 percent of dimethyl silicone oil, 0.06 to 0.08 percent of sodium dodecyl sulfate, 0.10 to 0.20 percent of Span-20, 0.20 to 0.30 percent of Tween-20, 0.4 to 2.0 percent of compound modified component and the balance of water.
5. The aqueous release agent capable of eliminating the air bubbles on the surface of the concrete as claimed in claim 1, wherein the A liquid comprises 0.15-0.20% of Tween-20, 0.05-0.06% of sodium dodecyl sulfate and the balance of water;
the component of the liquid B comprises 30 to 40 percent of dimethyl silicone oil and 0.05 to 0.20 percent of Span-20.
6. The aqueous release agent capable of eliminating the air bubbles on the surface of the concrete as claimed in claim 1, wherein the component A comprises 0.25-0.30% of Tween-20, 0.06-0.07% of sodium dodecyl sulfate and the balance of water;
the component of the liquid B comprises 25 to 35 percent of dimethyl silicone oil and 0.1 to 0.2 percent of Span-20.
7. The aqueous release agent for removing air bubbles from the surface of concrete according to claim 1, wherein the solution B is sufficiently mixed at 40 to 60 ℃.
8. The aqueous release agent capable of eliminating air bubbles on the surface of concrete according to claim 1, wherein the kinematic viscosity of the dimethylsilicone oil is in the range of 500 to 2000.
9. The preparation method of the water-based release agent capable of eliminating the air bubbles on the surface of the concrete is characterized by comprising the following components in percentage by mass: 20-40% of dimethyl silicone 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 compound modified component comprises tributyl phosphate and ethylparaben;
1) tween-20, sodium dodecyl sulfate and water are prepared into solution A for use at any time;
2) uniformly stirring dimethyl silicone oil and Span-20 at the temperature of 40-60 ℃ until the mixed solution is milky to prepare a solution B;
3) slowly adding the solution A into the solution B, stirring while adding at the temperature of 40-60 ℃ until the solution A is completely added, then sequentially adding the compound modified components, and uniformly stirring and mixing to obtain a water-based release agent;
the water-based release agent is directly sprayed on the surface of a template, or is diluted with water to a certain proportion for use.
10. The method for preparing the aqueous release agent capable of eliminating the air bubbles on the surface of the concrete according to claim 9, wherein the compound modification component further comprises a pH regulator, a thickening agent and a metal ion shielding agent; the weight percentages of the components are as follows: 0.01-0.8% of tributyl phosphate, 0.01-0.5% of ethylparaben, 0.01-0.2% of pH regulator, 0.01-0.4% of thickening agent and 0.01-0.3% of metal ion shielding agent;
the pH regulator is a sodium hydroxide solution with the mass concentration of 2-10%, the thickening agent is a carboxymethyl cellulose solution with the mass concentration of 2-5%, and the metal ion shielding agent is EDTA.
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| CN112171868A (en) * | 2020-09-08 | 2021-01-05 | 安徽同济建设集团有限责任公司 | Construction method for reducing air bubbles on surface of aluminum alloy template concrete |
| CN112210426A (en) * | 2020-10-14 | 2021-01-12 | 中建西部建设贵州有限公司 | Efficient release agent for fair-faced concrete and preparation method thereof |
| CN112625779A (en) * | 2020-11-12 | 2021-04-09 | 惠州市麒麟环保材料有限公司 | Novel water-in-oil aluminum template concrete release agent and preparation method thereof |
| CN112877123A (en) * | 2021-01-18 | 2021-06-01 | 湖南加美乐素新材料股份有限公司 | Defoaming and releasing agent for concrete and preparation method thereof |
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Application publication date: 20191220 |