CN113025412A - Concrete release agent and preparation method thereof - Google Patents
Concrete release agent and preparation method thereof Download PDFInfo
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- CN113025412A CN113025412A CN202011448245.2A CN202011448245A CN113025412A CN 113025412 A CN113025412 A CN 113025412A CN 202011448245 A CN202011448245 A CN 202011448245A CN 113025412 A CN113025412 A CN 113025412A
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/388—Treating surfaces of moulds, cores, or mandrels to prevent sticking with liquid material, e.g. lubricating
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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
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/401—Fatty vegetable or animal oils used as base material
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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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
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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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/12—Polysaccharides, e.g. cellulose, biopolymers
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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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
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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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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
The invention discloses a concrete release agent and a preparation method thereof, wherein the concrete release agent comprises the following raw material components in parts by mass: 45-60 parts of vegetable oil; 7-13 parts of an oily emulsifier; 7-13 parts of a composite water-based emulsifier; water 180 and 300 portions; the composite water-based emulsifier is selected from more than two of tween, polyoxyethylene octyl phenol ether and sodium dodecyl benzene sulfonate. According to the invention, the oily emulsifier is matched with the aqueous emulsifier, so that the concrete release agent has good stability and small adhesion amount, and meanwhile, the drying and film forming time of the concrete release agent is short, and the concrete surface decoration process is not influenced.
Description
Technical Field
The invention relates to a concrete release agent and a preparation method thereof, belonging to an auxiliary agent for concrete engineering construction.
Background
Since the early 60 s of the twentieth century, the release agent developed very rapidly, and a series of products were formed so far and gradually matched with modern construction and template technologies. Most of early concrete projects in China also use engine oil or waste engine oil as a mold release agent, but the drying time after coating is long, so that clothes of workers and operating personnel are easily polluted and reinforcing steel bars are easily polluted, and after concrete is hardened and demoulded, oil spots often exist on the surface of a structure.
At present, the water-based release agent developed abroad is mainly prepared by preparing substances such as paraffin, oil and the like into oil-in-water or water-in-oil emulsion or cream through an emulsification technology, or adding a surfactant into pure oil for use and the like. The emulsion type release agent has good demolding effect, the usage amount of film forming substances (oil or paraffin) is small, the pollution to the surface of a concrete structure is reduced to the maximum extent, non-renewable resources such as paraffin, diesel oil, engine oil and the like are saved, and the emulsion type release agent conforms to the concept of sustainable development with low energy consumption at present.
At present, the environment-friendly concrete mold release agent in the mold release agent market only occupies a small share (the European market is only 5%), but with the increasing perfection of legislation and supervision, people pay more and more attention to safety, environmental protection and health, and the environment-friendly concrete mold release agent is bound to become the mainstream of the market and replace the traditional mold release agent. The development of the environment-friendly concrete mold release agent is bound to become the development direction of the concrete mold release agent in the future. The vegetable oil is rich in yield in China, relatively low in price, nontoxic, pollution-free and nonirritant solar substance, and has good demolding effect due to the self film-forming lubricity, so that the research on the preparation of the environment-friendly vegetable oil-based concrete demolding agent by using the vegetable oil has very profound and important significance.
Disclosure of Invention
The technical problem to be solved by the invention is that the traditional vegetable oil has a short stabilization period after emulsification, generally below 60 days; the adhesion amount of concrete is large, and construction is affected.
In order to solve the technical problems, the invention provides a concrete vegetable oil release agent which comprises the following raw material components in parts by mass:
the composite water-based emulsifier is selected from more than two of tween, polyoxyethylene octyl phenol ether and sodium dodecyl benzene sulfonate.
Preferably, the composite water-based emulsifier comprises 2-6 parts of tween, 2-6 parts of polyoxyethylene octylphenol ether and 1-3 parts of sodium dodecyl benzene sulfonate by mass.
Preferably, the composite water-based emulsifier is characterized by comprising 4.0-5.0 parts of tween, 4.0-4.8 parts of polyoxyethylene octyl phenol ether and 1.5-2.5 parts of sodium dodecyl benzene sulfonate by mass parts. More preferably, it consists of the above-mentioned components.
Preferably, the tween is tween60 and/or tween 80; and/or the polyoxyethylene octyl phenol ether is OP-10; and/or the oily emulsifier is span60 and/or span 80.
Preferably, the mass ratio of the oily emulsifier to the composite aqueous emulsifier is 1: 0.8-1.2.
Preferably, the vegetable oil is one or a mixture of several of rapeseed oil, soybean oil and corn oil.
Preferably, the raw material components of the concrete release agent further comprise: 0.5-2 parts by mass of a preservative; and/or 0.5-2 parts of stabilizer by mass.
Preferably, the preservative is triethanolamine; and/or the stabilizer is xanthan gum.
Preferably, the concrete mold release agent is composed of the above raw materials. Optimally, the composite aqueous emulsifier comprises the following components: TW-80, OP-10 and SDBS were 4.4 parts, 4.2 parts and 2 parts by mass, respectively.
The invention also provides a preparation method of the concrete release agent, which comprises the following steps:
(1) mixing an oily emulsifier with vegetable oil to obtain a solution A; mixing the composite water-based emulsifier with water to obtain a solution B;
(2) and (3) dropwise adding the solution B into the solution A (stirring while dropwise adding the solution B), and adding an auxiliary agent (such as a preservative and a stabilizer) after dropwise adding is finished to prepare the required concrete release agent.
Preferably, during the dropping process in the step (2), the temperature of the solution A and the solution B is controlled to be 35-50 ℃, and the rotation speed of stirring during emulsification is 800-1100 rpm.
Compared with the prior art, the invention has the advantages that:
(1) the invention uses the oil emulsifier and the water emulsifier to match, so that the concrete release agent has the advantages of good stability, small adhesion amount, no corrosion and prolonged service life of the template. Meanwhile, the drying and film forming time of the concrete release agent is short, and the concrete surface decoration process is not influenced; (2) compared with the traditional mineral oil mold release machine, the vegetable oil mold release agent belongs to renewable resources, the vegetable oil has rich yield in China and relatively low price, is a solar substance without toxicity, pollution and pungent smell, and meets the national sustainable development requirement.
Detailed Description
The present invention will be further described with reference to examples and comparative examples.
Note: the meaning of the Span and Span in the invention is the same, and the Span is abbreviated as S, such as S-60; "Tween" has the same meaning as "Tween", abbreviated as "TW", e.g., TW-80 "; "polyoxyethylene octyl phenol ether" abbreviated as "OP"; sodium dodecyl benzene sulfonate is abbreviated as SDBS.
The method for calculating and testing the main performance indexes comprises the following steps:
HLB value calculation method:
the HLB value of each emulsifier is known, where: span-60 is 4.7, Tween-80 is 15, OP-10 is 14.5, SDBS is 10.63, span-80 is 4.3.
The HLB value is calculated from the HLB value and the corresponding mass fraction of each emulsifier, for example in example 1: s-60: TW-80: OP-10: SDBS ═ 10: 4.4: 4.2: 2, namely, the mass fraction of each emulsifier is 48.5%, 21.3%, 20.4%, 9.7%. The HLB value of the complex emulsifier is 4.7 × 48.5% +15 × 21.3% +14.5 × 20.4% +10.63 × 9.7% ═ 9.46.
Testing for days of stability. The test method for days of stability of the present invention is as follows: and (3) sampling, injecting the sample into a colorimetric tube, standing at room temperature (about 25 ℃), and observing whether the sample is uniform under natural illumination or not, wherein the sample has obvious layering phenomenon. The days after standing until layering are the stabilization days.
The concrete adhesion was tested according to GB8076-1997, GB/T50080, GB/T50081: cleaning the interior of the mould, brushing a release agent, pouring out a sample block after 24 hours, shoveling the concrete adhered to the working surface of the basement membrane by using a shovel blade, weighing by using balance after collection, and calculating the adhesion amount (g/m) of a unit area2)。
Compared with the traditional release agent, the release agent is characterized in that the base oil is selected from vegetable oil, particularly preferably rapeseed oil in the vegetable oil, and the rapeseed oil is emulsified to be used as the release agent. Its advantages are as follows:
from the above table, it can be seen that: the emulsified oil release agent with the rapeseed oil as the base oil is stable in performance, free of pollution to the environment after use, in accordance with the national advocated environment protection and renewable resource use principle, free of rust on the template, good in release effect superior to soap release agents, largest in unit coating area and capable of saving the cost of merchants.
The inventor selects rapeseed oil to carry out the following preliminary experiments, and the inventor finds that the emulsifying effect is slightly worse than the temperature of about 50 ℃ when the emulsification is carried out at the normal temperature. The emulsifying speed is preferably 800rpm-1100 rpm. The inventors also examined the effect of different addition amounts of emulsifier on the emulsifying effect.
The emulsifier is selected from oily emulsifier span 60; tween60 is selected as the aqueous emulsifier, and the ratio of the Tween60 to the aqueous emulsifier is 1: 1. The following table shows the emulsified state of the emulsion when the amount of the emulsifier is 10%, 15%, 20%, 25%, 33% of the vegetable oil, and it can be seen from the following table that the amount of the emulsifier is 25% or more.
| Amount of emulsifier (g) | Emulsion state |
| 10 | Layering |
| 15 | Layering |
| 20 | Layering |
| 25 | Stabilization |
| 33 | Stabilization |
Example 1
This example provides a concrete mold release agent, whose raw material components include (calculated by mass parts, 10g of the formulation per part):
wherein, the composite water-based emulsifier comprises the following components: TW-80, OP-10 and SDBS were 4.4 parts, 4.2 parts and 2 parts by mass, respectively. Namely, the mass parts of the emulsifiers are as follows: s-60: TW-80: OP-10: SDBS ═ 10: 4.4: 4.2: 2.
the preparation method comprises the following steps:
(1) mixing an oily emulsifier S-60 with rapeseed oil, and stirring until the oily emulsifier S-60 and the rapeseed oil are fused to obtain a solution A; mixing composite water-based emulsifiers (TW-80, OP-10 and SDBS) with water, and stirring until the two are fused to obtain a solution B;
(2) and dropwise adding the solution B into the solution A while stirring, and adding a preservative (triethanolamine) and a stabilizer (xanthan gum) after dropwise adding to prepare the concrete release agent. Wherein the temperature of the solution (solution A and solution B) is uniformly maintained at about 45 ℃ during emulsification, and the stirring speed is uniformly selected to be 1000rpm during emulsification.
Through calculation and test, the HLB value of the obtained concrete mold release agent is 9.46, and the number of days for which the obtained concrete mold release agent is stable is 90 d; the adhesion was 4.3g/m2。
Example 2
This example provides a concrete release agent having essentially the same raw material formulation and preparation method as in example 1, except that: the composite water-based emulsifier comprises the following components: the mass parts of TW-80, OP-10 and SDBS are respectively 4 parts, 4 parts and 2 parts, namely the mass parts of the emulsifying agents are as follows: s-60: TW-80: OP-10: SDBS ═ 10: 4: 4: 2.
through calculation and test, the HLB value of the obtained concrete release agent is 9.3, and the number of days for which the obtained concrete release agent is stable is 75 d; the adhesion was 4.9g/m2。
Example 3
This example provides a concrete release agent having essentially the same raw material formulation and preparation method as in example 1, except that: the composite water-based emulsifier comprises the following components: the mass parts of TW-80, OP-10 and SDBS are respectively 4.8 parts, 4.4 parts and 2 parts, namely the mass parts of the emulsifier are as follows: s-60: TW-80: OP-10: SDBS ═ 10: 4.8: 4.4: 2.
through calculation and test, the HLB value of the obtained concrete release agent is 9.6, and the number of stable days of the obtained concrete release agent is 60 d; the adhesion was 6.0g/m2。
Example 4
This example provides a concrete release agent having essentially the same raw material formulation and preparation method as in example 1, except that: the composite water-based emulsifier comprises the following components: the mass parts of TW-80, OP-10 and SDBS are respectively 5 parts, 1 part and 4 parts, namely the mass parts of the emulsifiers are as follows: s-60: TW-80: OP-10: SDBS ═ 10: 5: 1: 4.
through calculation and test, the HLB value of the obtained concrete release agent is 8.9, and the number of days for which the obtained concrete release agent is stable is 75 days; the adhesion was 5.8g/m2。
Example 5
This example provides a concrete release agent having essentially the same raw material formulation and preparation method as example 4, except that: the oily emulsifier is selected from S-80 in parts by mass instead of S-60.
Through calculation and test, the HLB value of the obtained concrete release agent is 8.7, and the number of days for which the obtained concrete release agent is stable is 70 d; the adhesion was 6.1g/m2。
Example 6
This example provides a concrete release agent having essentially the same raw material formulation and preparation method as in example 1, except that: the composite water-based emulsifier comprises the following components: OP-10 and SDBS were 6 parts and 4 parts by mass, respectively, i.e., no TW-80 was included.
Through calculation and test, the HLB value of the obtained concrete release agent is 8.8, and the number of stable days of the obtained concrete release agent is 55 d; the adhesion was 7.1g/m2。
Example 7
This example provides a concrete release agent having essentially the same raw material formulation and preparation method as in example 1, except that: TW-80 and SDBS were 6 parts and 4 parts by mass, respectively, i.e., OP-10 was not included.
Through calculation and test, the HLB value of the obtained concrete release agent is 9.0, and the number of days for which the obtained concrete release agent is stable is 70 d; the adhesion amount was 5.0g/m2。
Example 8
This example provides a concrete release agent having essentially the same raw material formulation and preparation method as in example 1, except that: the composite water-based emulsifier comprises the following components: TW-80 and OP-10 parts by mass were 5 parts and 5 parts, respectively, i.e., no SDBS was contained.
Through calculation and test, the HLB value of the obtained concrete release agent is 9.7, and the number of days for which the obtained concrete release agent is stable is 42 d; the adhesion was 8.0g/m2。
Comparative example 1
This comparative example provides a concrete release agent having a raw material formulation and a preparation method substantially the same as those of example 1 except that: the composite aqueous emulsifier of example 1 is TW-80 alone, and the mass part is 10 parts.
Through calculation and test, the HLB value of the obtained concrete release agent is 9.9, and the number of stable days of the obtained concrete release agent is 30 d; the adhesion was 9.0g/m2。
Comparative example 2
This comparative example provides a concrete release agent having a raw material formulation and a preparation method substantially the same as those of example 1 except that: the composite aqueous emulsifier of example 1 is OP-10 alone, and the mass part is 10 parts.
Through calculation and test, the HLB value of the obtained concrete release agent is 9.6, and the number of days for which the obtained concrete release agent is stable is 35 d; the adhesion was 8.8g/m2。
Comparative example 3
This comparative example provides a concrete release agent having a raw material formulation and a preparation method substantially the same as those of example 1 except that: the composite aqueous emulsifier of example 1 was SDBS alone, and 10 parts by mass.
Through calculation and test, the HLB value of the obtained concrete release agent is 7.6, and the number of days for which the obtained concrete release agent is stable is 6 d; the adhesion was 15g/m2。
From the above examples, it can be seen that when an oily emulsifier (e.g., Span60/Span80) is selected to be compounded with a compounded aqueous emulsifier (Tween60+ Op-10+ SDBS), the emulsifying effect is improved and the emulsion stability is improved. The applicant analyzed that: this is because the combination of several surfactants can reduce the surface tension of the emulsion, and thus the stability of the emulsion is also improved. The anionic surfactant is ionized in water to generate charges, so that the micro oil drops in the emulsion have the same charges, and the coagulation of the oil drops is prevented through the electrostatic action, thereby being beneficial to the stability of the emulsion. In addition, OP-10 and Tween80 have obvious synergistic effect, and can form stable film on the surface of emulsion droplet, so that the stability of emulsion is promoted, and further the stability of emulsified oil can reach more than 75 days and even 90 days by matching with SDBS.
Unexpectedly, multiple experiments show that under certain specific proportion (example 1), the compatibility of Span60+ Tween80+ OP-10+ SDBS is adopted, the emulsion stability is highest, the stable days of 90 days are reached, and the adhesion amount is 4.3g/m2。
The demoulding mechanism of the concrete is to overcome the adhesive force between the template and the concrete or the cohesive force of the surface concrete by three functions of mechanical lubrication, barrier film and chemical action; the secondary structure of the stabilizer xanthan gum is that the side chain reversely winds around the main chain skeleton, a rodlike double-spiral structure is formed through a hydrogen bond system, the composite emulsifier improves the number of days for stabilizing the solution, the stability for winding the main chain skeleton of the xanthan gum is promoted, the double-spiral structure is more stable, the time for the release agent to stay on the side wall of the mold before the release agent is dried to form a film is prolonged, namely, the oil content on the side wall is increased, the isolation lubrication effect between the mold and a concrete sample block is obvious, and the amount of concrete adhered on the mold is reduced.
The emulsified oil obtained in the above example 1 was used as a concrete release agent, and the performance indexes were as follows:
concrete water-based release agent detection result
Claims (10)
1. The concrete release agent is characterized by comprising the following raw material components in parts by mass:
the composite water-based emulsifier is selected from more than two of tween, polyoxyethylene octyl phenol ether and sodium dodecyl benzene sulfonate.
2. The concrete mold release agent according to claim 1, wherein the composite aqueous emulsifier comprises 2-6 parts of tween, 2-6 parts of polyoxyethylene octylphenol ether and 1-3 parts of sodium dodecylbenzene sulfonate by mass.
3. The concrete mold release agent according to any one of claims 1 to 2, characterized in that the composite aqueous emulsifier comprises 4.0 to 5.0 parts by mass of tween, 4.0 to 4.8 parts by mass of polyoxyethylene octylphenol ether, and 1.5 to 2.5 parts by mass of sodium dodecylbenzene sulfonate.
4. The concrete release agent according to any one of claims 1 to 3, wherein the Tween is selected from Tween60 or Tween 80; and/or the polyoxyethylene octyl phenol ether is OP-10; and/or the oily emulsifier is span60 or span 80.
5. The concrete mold release agent according to any one of claims 1 to 4, wherein the mass ratio of the oil-based emulsifier to the composite aqueous emulsifier is 1:0.8 to 1.2.
6. The concrete release agent as claimed in any one of claims 1 to 5, wherein the vegetable oil is one or more of rapeseed oil, soybean oil and corn oil.
7. The concrete release agent according to any one of claims 1 to 6, wherein the raw material components of the concrete release agent further include: 0.5-2 parts by mass of a preservative; and/or 0.5-2 parts of stabilizer by mass.
8. The concrete release agent according to any one of claims 1 to 7, wherein the preservative is triethanolamine; and/or the stabilizer is xanthan gum.
9. A method for preparing a concrete mold release agent according to any one of claims 1 to 8, characterized by comprising the steps of:
(1) mixing an oily emulsifier with vegetable oil to obtain a solution A; mixing the composite water-based emulsifier with water to obtain a solution B;
(2) and dropwise adding the solution B into the solution A, and adding an auxiliary agent after the dropwise adding is finished to prepare the concrete release agent.
10. The preparation method according to claim 9, wherein during the dropwise addition in the step (2), the temperature of the solution A and the solution B is controlled at 35-50 ℃; and/or the rotation speed of stirring during emulsification is 800-1100 rpm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717780A (en) * | 2021-09-24 | 2021-11-30 | 西安土星科技有限公司 | Vegetable oil concrete release agent and preparation method and application thereof |
| CN113755230A (en) * | 2021-09-24 | 2021-12-07 | 西安土星科技有限公司 | Concrete release agent and preparation method and application thereof |
| CN114381323A (en) * | 2021-12-29 | 2022-04-22 | 山西佳维新材料股份有限公司 | Concrete release agent and preparation method thereof |
| CN115287115A (en) * | 2022-08-05 | 2022-11-04 | 中冶武汉冶金建筑研究院有限公司 | Water-based concrete release agent and preparation method thereof |
| CN116554947A (en) * | 2023-05-12 | 2023-08-08 | 四川砼兴源建材科技有限公司 | Surface-enhanced concrete water-based release agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113717780A (en) * | 2021-09-24 | 2021-11-30 | 西安土星科技有限公司 | Vegetable oil concrete release agent and preparation method and application thereof |
| CN113755230A (en) * | 2021-09-24 | 2021-12-07 | 西安土星科技有限公司 | Concrete release agent and preparation method and application thereof |
| CN114381323A (en) * | 2021-12-29 | 2022-04-22 | 山西佳维新材料股份有限公司 | Concrete release agent and preparation method thereof |
| CN115287115A (en) * | 2022-08-05 | 2022-11-04 | 中冶武汉冶金建筑研究院有限公司 | Water-based concrete release agent and preparation method thereof |
| CN115287115B (en) * | 2022-08-05 | 2023-03-10 | 中冶武汉冶金建筑研究院有限公司 | Water-based concrete release agent and preparation method thereof |
| CN116554947A (en) * | 2023-05-12 | 2023-08-08 | 四川砼兴源建材科技有限公司 | Surface-enhanced concrete water-based release agent and preparation method thereof |
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Application publication date: 20210625 |