CN114085701B - Water-based concrete release agent and preparation method thereof - Google Patents
Water-based concrete release agent and preparation method thereof Download PDFInfo
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- CN114085701B CN114085701B CN202111395307.2A CN202111395307A CN114085701B CN 114085701 B CN114085701 B CN 114085701B CN 202111395307 A CN202111395307 A CN 202111395307A CN 114085701 B CN114085701 B CN 114085701B
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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
- B28B7/384—Treating agents
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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
- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/68—Esters
- C10M129/70—Esters of monocarboxylic acids
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- 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
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
- C10M2207/122—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms monocarboxylic
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- 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
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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- 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
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/14—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/141—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to carbon atoms of six-membered aromatic rings monocarboxylic
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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
- C10M2207/281—Esters of (cyclo)aliphatic monocarboxylic acids
- C10M2207/2815—Esters of (cyclo)aliphatic monocarboxylic acids 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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
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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
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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
- C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
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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
- C10M2219/042—Sulfate 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
- 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
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/24—Emulsion properties
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/36—Release agents or mold release agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to the field of concrete release agents, and provides a water-based concrete release agent and a preparation method thereof. The release agent comprises an emulsified product of an esterification product, wherein the esterification product is generated after vegetable oil is subjected to esterification reaction with high-carbon alcohol under the catalysis of an alkaline catalyst, the emulsified product is prepared by emulsifying under the participation of an emulsifier, and the emulsifier comprises a water-soluble emulsifier and an oil-soluble emulsifier; the higher alcohol is tridecanol; the defoaming agent comprises a defoaming component and a penetrating agent, wherein the defoaming component is polyoxyethylene oleyl ether and is used for eliminating bubble marks generated by the penetrating agent; the penetrating agent is used for enabling the defoaming component to penetrate into the internal hole structure of the concrete. The concrete release agent prepared by the invention has the characteristics of good release effect, high apparent quality, high compressive strength of concrete and good durability.
Description
Technical Field
The invention relates to the field of concrete release agents, in particular to a water-based concrete release agent and a preparation method thereof.
Background
At present, the production process of products such as precast concrete members, tubular piles and the like needs to be molded by using a mold, the defects of the products are caused by the adhesion of the template in the mold removing process, the production cost is increased, some members have higher requirements on appearance and appearance, ordinary engine oil cannot meet the market demands, and some mold release agents with better mold release performance are needed. At present, commercial concrete release agents at home and abroad are various in types, and the release effects of different types of release agents on concrete and templates are different. Most of the release agents are oils, the raw materials are few, the cost is high, oil mist is easily generated in the production process, and the air quality is polluted, so that the health of operators is harmed; the water-soluble release agent is simple to operate, does not have oil mist and has small environmental pollution, so that the development of the high-performance environment-friendly release agent has important significance. The appearance quality of concrete is greatly related to the durability of concrete. The good appearance quality plays a protective role on the whole and the internal structure of the concrete, and physical and chemical erosion of the concrete from the outside can be weakened. The appearance quality is high, no decoration is needed, and the procedures of repairing, plastering and the like are saved, so that the cost is greatly reduced. Moreover, compared with common concrete, the concrete has fewer common defects of appearance quality and improves the durability of concrete engineering.
The apparent mass of the concrete member is related to a plurality of factors, such as raw materials of the concrete, selection of mixing ratio, adaptability of the admixture, compatibility of the admixture and a release agent, selected templates, construction vibration technology and the like. Wherein the release agent is an important factor influencing the apparent quality of the concrete. The concrete release agent mainly comprises a traditional oily release agent, a fatty acid release agent, an emulsified oil release agent and the like, wherein the action mechanism of the traditional oily release agent is mainly lubrication and isolation, oil is easy to attach to the surface of concrete, so that the surface of the concrete is polluted and polluted, and the surface color difference phenomenon is caused; meanwhile, the oily release agent has high viscosity, so that the surface tension of a liquid phase of bubbles is increased, the bubbles are difficult to break and discharge, and more surface pores are caused. The fatty acid release agent has good release and rust resistance, does not pollute the surface of concrete, is rain-wash resistant, can be used for three times after being coated once, but mostly has chemical reaction with alkali (free lime) of the concrete. Most of the emulsified oil demoulding oil agents are prepared by petroleum lubrication, an emulsifying agent and a stabilizing agent, and an antirust additive is sometimes added. The emulsifier is used to replace petroleum lubricant oil, so that not only can a great amount of oil be saved, but also the quality of the release agent can be improved, and the release cost can be reduced. After being coated, the paint is easy to dry, and some films formed after being dried can be repeatedly applied, thereby saving labor and materials and greatly reducing the demoulding cost.
The existing water-based release agent is mainly an emulsified oil release agent, most of raw materials of the product are mineral oil as film forming substances, the product is non-renewable, is not easy to degrade and has harm to the environment, a layer of cement adhesive is gradually formed on a mould after the product is used for 1-2 times, the mould is required to be cleaned, even polished and polished, labor and time are wasted, meanwhile, the release agent cannot contact rainwater, and the actual application scene and application range of the release agent are greatly limited.
A chinese patent publication No. CN103333734A published in 2013, 10, month and 2, discloses a preparation method of a novel concrete form release agent, which comprises the following steps: adding 30-40 parts of mixed higher alcohol, 10-20 parts of vegetable oil and 5-15 parts of sodium hydroxide into a container according to parts by weight, mixing, heating to 100 ℃, volatilizing a large amount of water vapor and a small amount of organic matters, and continuously heating for 2-3 hours to basically discharge the vapor. However, because the concrete release agent is an oil-soluble release agent, a penetrating agent cannot be adopted in the preparation process, and the release agent cannot penetrate into the pore structure inside the concrete, so that the pore structure inside the concrete cannot be eliminated; and no defoaming component is introduced, so that air holes on the surface of the concrete cannot be eliminated, and the demoulding effect of the concrete is limited.
Disclosure of Invention
In order to solve the defect that the concrete demoulding effect of the demoulding agent prepared in the prior art is limited, the invention provides the water-based concrete demoulding agent, which comprises an emulsified product of an esterification product, wherein the esterification product is generated by esterification reaction of vegetable oil and high-carbon alcohol under the catalysis of an alkaline catalyst, the emulsified product is prepared by emulsification under the participation of an emulsifier, and the emulsifier comprises a water-soluble emulsifier and an oil-soluble emulsifier; the higher alcohol is tridecanol; the defoaming agent comprises a defoaming component and a penetrating agent, wherein the defoaming component is polyoxyethylene oleyl ether and is used for eliminating bubble marks generated by the penetrating agent; the penetrating agent is used for enabling the defoaming component to penetrate into the internal hole structure of the concrete.
In one embodiment, the release agent comprises 10-20 parts of tridecanol, 0.5-5 parts of basic catalyst, 10-95 parts of vegetable oil, 3-10 parts of oil-soluble emulsifier, 1-3 parts of penetrant, 1-3 parts of defoaming component, 4-20 parts of water-soluble emulsifier and 20-80 parts of water.
In one embodiment, the tridecanol is of the formula:
In a preferred embodiment, the tridecanol is commercially available under the trademarks SAFOL23 and/or MARLIPALL O13.
In one embodiment, the basic catalyst is sodium hydroxide.
In one embodiment, the vegetable oil is palm oil.
In a preferred embodiment, the palm oil is 24 degrees, 44 degrees, 52 degrees or 58 degrees palm oil.
In one embodiment, the water-soluble emulsifier is compounded by an anionic water-soluble emulsifier and a nonionic water-soluble emulsifier.
In a preferred embodiment, the mass ratio of the anionic water-soluble emulsifier to the nonionic water-soluble emulsifier is 1: 1.
In a preferred embodiment, the anionic water-soluble emulsifier is one or more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium stearate.
In a preferred embodiment, the nonionic water-soluble emulsifier is polyethylene glycol oleate.
In a more preferred embodiment, the polyethylene glycol oleate comprises one or more of PEG600MO, PEG600DO, PEG400MO, and PEG400 DO.
In one embodiment, the oil-soluble emulsifier is a sorbitan fatty acid ester.
In a preferred embodiment, the sorbitan fatty acid ester is one or more of S-85, S-80, S-60 and S-40 under the trade name of sorbitan fatty acid ester.
In one embodiment, the corrosion inhibitor further comprises a corrosion inhibitor.
In one embodiment, the penetrant is sodium di-sec-octyl maleate sulfonate.
In one embodiment, the rust inhibitor is sodium benzoate.
In a preferred embodiment, the rust inhibitor accounts for 0.1-2 parts.
In one embodiment, the preservative is potassium sorbate.
In a preferred embodiment, the preservative is 0.1-2 parts.
The invention also provides a preparation method of the water-based concrete release agent, which comprises the following specific steps:
adding vegetable oil into a reaction kettle, adding a catalyst, raising the temperature to 50-70 ℃, introducing nitrogen, adding dodecanol and/or tridecanol, continuously raising the temperature to 110-130 ℃, and reacting for 1-3 hours to form modified vegetable oil;
adding an oil-soluble emulsifier into a stirring container, adding water, and heating to 40-60 ℃ while stirring to form emulsified water;
mixing a penetrant, the modified palm oil and a water-soluble emulsifier, heating to 40-60 ℃, stirring completely and uniformly, and then adding a defoaming component to prepare a micro-emulsified mixed solution;
slowly adding emulsified water into the micro-emulsified mixed solution, heating to 40-60 ℃ while stirring, stirring until the emulsion becomes milky, stopping adding the emulsified water, cooling after stirring, and continuously stirring the rust inhibitor, the preservative and the rest emulsified water to obtain the water-based concrete release agent.
In a preferred embodiment of the preparation method, the vegetable oil is added into a reaction kettle, then the catalyst is added, the temperature is raised to 60 ℃, nitrogen is introduced, tridecanol is added, the temperature is raised to 120 ℃ continuously, the reaction is carried out for 2 hours, the modified vegetable oil is formed, and the rest steps are not changed.
In a preferred embodiment of the preparation process, the oil-soluble emulsifier is added to a stirred vessel, water is added, the temperature is raised to 50 ℃ while stirring, emulsified water is formed, and the rest steps are unchanged.
In a preferred embodiment of the preparation method, the penetrant, the modified palm oil and the water-soluble emulsifier are mixed, heated to 50 ℃ to be completely and uniformly stirred, and then the defoaming component is prepared into a micro-emulsified mixed solution, and the rest steps are not changed.
In a preferred embodiment of the preparation method, the emulsified water is slowly added into the micro-emulsified mixed solution, the temperature is raised to 40-60 ℃ while stirring, the emulsified water is stopped being added when the emulsion is milk-white, then the emulsified water is cooled to 30 ℃, the rust inhibitor, the preservative and the rest emulsified water are continuously stirred for 20min, the water-based concrete release agent is obtained, and the rest steps are unchanged.
Based on the above, compared with the prior art, the water-based concrete release agent provided by the invention adopts environment-friendly and renewable palm oil as a raw material and tridecanol for modification, so that the dependence of the traditional release agent on mineral oil is eliminated, the comprehensive utilization of vegetable oil is realized, and the environmental pollution and the human harm are reduced, thereby improving the surface quality of concrete and reducing the dust adhesion of a mould; the penetrating agent is added, so that the defoaming component can penetrate into the surface layer, the internal pore structure is eliminated, the internal structure of the concrete is compact, and the durability of the concrete is improved; the introduction of the material containing the defoaming component eliminates apparent bubbles, greatly reduces the number of air holes on the surface of the concrete, and the defoaming component can avoid serious bubble marks on the surface of the concrete caused by a large amount of bubbles generated by adding a penetrating agent, thereby achieving the effects of easily demoulding and keeping the complete appearance of the concrete. Therefore, the prepared concrete release agent has the characteristics of good demolding effect, high apparent quality, high compressive strength of concrete and good durability.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; the technical features designed in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be noted that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, and are not to be construed as limiting the present invention; it will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The invention provides the following examples and comparative examples:
the polyoxyethylene oleyl ether is produced by Shasox (China) chemical company Limited, and the brand of the polyoxyethylene oleyl ether is MARLOX BR 3551;
the mixture of dodecanol and tridecanol is manufactured by Saxol (China) chemical Co., Ltd. under the trademarks SAFOL23 and MARLIPAL O13.
Example 1
Adding 10 parts of 24-DEG palm oil into a reaction kettle, adding 0.5 part of NaOH catalyst, raising the temperature to 60 ℃, introducing nitrogen, adding 10 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 2 hours to obtain the modified 24-DEG palm oil.
Adding 3 parts of polyethylene glycol oleate (PEG600MO) and 3 parts of sodium dodecyl sulfate into a stirring container, adding 20 parts of water, and heating to 40 ℃ while stirring to form emulsified water for later use.
Mixing 1 part of di-sec-octyl maleate sodium sulfonate, modified 24-DEG palm oil and 3 parts of sorbitan fatty acid ester (S-80), heating to 40 ℃, and then adding 1 part of MARLOX BR3551 to completely and uniformly stir to prepare a micro-emulsified mixed solution;
slowly adding emulsified water into the micro-emulsified mixed solution, heating to 40 ℃ while stirring, stirring until the emulsion becomes milk white, stopping adding the emulsified water, cooling to 30 ℃ after stirring, and continuously stirring 1 part of sodium benzoate, 0.1 part of potassium sorbate and the rest of emulsified water for 20min to obtain the water-soluble concrete release agent.
Example 2
Adding 30 parts of 44-degree palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 50 ℃, introducing nitrogen, adding 20 parts of MARLIPALL O13, continuously raising the temperature to 110 ℃, and reacting for 1h to obtain the modified 44-degree palm oil.
Adding 2 parts of polyethylene glycol oleate (PEG600DO) and 2 parts of sodium dodecyl benzene sulfonate into a stirring container, adding 40 parts of water, and heating to 50 ℃ while stirring to form emulsified water for later use.
Mixing 2 parts of di-sec-octyl maleate sodium sulfonate, modified 44-degree palm oil and 10 parts of sorbitan fatty acid ester (S-60), heating to 50 ℃, and adding 2 parts of MARLOX BR3551 to completely and uniformly stir to prepare a micro-emulsified mixed solution;
slowly adding emulsified water into the micro-emulsified mixed solution, heating to 50 ℃ while stirring, stirring until the emulsion becomes milk white, stopping adding the emulsified water, cooling to 30 ℃ after stirring, and continuously stirring for 20min with 0.1 part of sodium benzoate, 0.5 part of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete mold release agent.
Example 3
Adding 60 parts of 52-degree palm oil into a reaction kettle, adding 1.8 parts of NaOH catalyst, raising the temperature to 60 ℃, introducing nitrogen, adding 20 parts of MARLIPALL O13, continuously raising the temperature to 130 ℃, and reacting for 3 hours to obtain the modified 52-degree palm oil.
10 parts of polyethylene glycol oleate (PEG400DO) and 10 parts of sodium stearate are added into a stirring container, 60 parts of water is added, and the temperature is raised to 60 ℃ while stirring to form emulsified water for later use.
1 part of di-sec-octyl maleate sodium sulfonate, modified palm oil with the temperature of 52 degrees and 10 parts of sorbitan fatty acid ester (S-40) are mixed and heated to 60 ℃, and then 3 parts of MARLOX BR3551 are added to be completely and uniformly stirred to prepare a micro-emulsified mixed solution;
slowly adding emulsified water into the micro-emulsified mixed solution, heating to 60 ℃ while stirring, stirring until the emulsion becomes milk white, stopping adding the emulsified water, cooling to 30 ℃ after stirring, and continuously stirring for 20min by using 2 parts of sodium benzoate, 1 part of potassium sorbate and the rest of emulsified water to obtain the water-soluble concrete release agent.
Example 4
Adding 95 parts of 58-degree palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified 58-degree palm oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
1 part of di-sec-octyl maleate sodium sulfonate, modified 58-degree palm oil and 8 parts of sorbitan fatty acid ester (S-40) are mixed, heated to 45 ℃, and then added with 2 parts of MARLOX BR3551 to be completely and uniformly stirred to prepare a micro-emulsified mixed solution;
slowly adding emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, stirring until the emulsion becomes milk white, stopping adding the emulsified water, cooling to 30 ℃ after stirring, and continuously stirring 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest of emulsified water for 20min to obtain the water-soluble concrete release agent.
Comparative example 1
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
1 part of di-sec-octyl maleate sodium sulfonate, 58-degree palm oil and 8 parts of sorbitan fatty acid ester (S-40) are mixed, heated to 45 ℃, and then added with 2 parts of MARLOX BR3551 to be completely and uniformly stirred to prepare a micro-emulsified mixed solution;
slowly adding emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, stirring until the emulsion becomes milk white, stopping adding the emulsified water, cooling to 30 ℃ after stirring, and continuously stirring 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest of emulsified water for 20min to obtain the water-soluble concrete release agent.
Comparative example 2
Adding 95 parts of 58-degree palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified 58-degree palm oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
Mixing the modified 58-DEG palm oil and 8 parts of sorbitan fatty acid ester (S-40), heating to 45 ℃, and completely and uniformly stirring to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min by using 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 3
Adding 95 parts of 58-degree palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified 58-degree palm oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
1 part of di-sec-octyl maleate sodium sulfonate, modified 58-degree palm oil and 8 parts of sorbitan fatty acid ester (S-40) are mixed and heated to 45 ℃ to be completely and uniformly stirred to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min with 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 4
Adding 95 parts of 58-degree palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified 58-degree palm oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
Mixing the modified 58-DEG palm oil and 8 parts of sorbitan fatty acid ester (S-40), heating to 45 ℃, stirring uniformly, and adding 2 parts of MARLOX BR3551 to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min by using 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 5
Adding 95 parts of 58-degree palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified 58-degree palm oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
Mixing the modified 58-DEG palm oil and 8 parts of sorbitan fatty acid ester (S-40), heating to 45 ℃, stirring uniformly, and adding 2 parts of MARLOX BR3551 to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min by using 1 part of di-sec-octyl maleate sodium sulfonate, 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 6
Adding 95 parts of 58-degree palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified 58-degree palm oil.
12 parts of polyethylene glycol oleate (PEG400DO) is added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
Mixing 1 part of di-sec-octyl maleate sodium sulfonate, modified 58-degree palm oil and 8 parts of sorbitan fatty acid ester (S-40), heating to 45 ℃, stirring completely and uniformly, and then adding 2 parts of MARLOX BR3551 to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min with 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 7
Adding 95 parts of 58-degree palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified 58-degree palm oil.
12 parts of sodium stearate is added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
Mixing 1 part of di-sec-octyl maleate sodium sulfonate, modified 58-degree palm oil and 8 parts of sorbitan fatty acid ester (S-40), heating to 45 ℃, stirring completely and uniformly, and then adding 2 parts of MARLOX BR3551 to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min by using 2 parts of di-sec-octyl maleate sodium sulfonate, 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 8
Adding 95 parts of soybean oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified soybean oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
Mixing 1 part of di-sec-octyl maleate sodium sulfonate, modified soybean oil and 8 parts of sorbitan fatty acid ester (S-40), heating to 45 ℃, stirring completely and uniformly, and then adding 2 parts of MARLOX BR3551 to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min with 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 9
Adding 95 parts of 58-DEG palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified palm oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added to a stirring vessel, 80 parts of water are added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
1 part of di-sec-octyl maleate sodium sulfonate, modified 58-degree palm oil and 8 parts of sorbitan fatty acid ester (S-40) are mixed, heated to 45 ℃ and stirred completely and uniformly, and then 2 parts of dimethyl silicone oil are added to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min by using 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 10
Adding 95 parts of 58-DEG palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of SAFOL23, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified palm oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
Mixing 1 part of KS-9, modified 58-DEG palm oil and 8 parts of sorbitan fatty acid ester (S-40), heating to 45 ℃, stirring uniformly, and adding 2 parts of MARLOX BR3551 to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min by using 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
Comparative example 11
Adding 95 parts of 58-DEG palm oil into a reaction kettle, adding 5 parts of NaOH catalyst, raising the temperature to 70 ℃, introducing nitrogen, adding 15 parts of 1-tridecanol, continuously raising the temperature to 120 ℃, and reacting for 3 hours to obtain the modified palm oil.
6 parts of polyethylene glycol oleate (PEG400DO) and 6 parts of sodium stearate are added into a stirring container, 80 parts of water is added, and the temperature is raised to 45 ℃ while stirring to form emulsified water for later use.
Mixing 1 part of di-sec-octyl maleate sodium sulfonate, modified 58-degree palm oil and 8 parts of sorbitan fatty acid ester (S-40), heating to 45 ℃, stirring completely and uniformly, and then adding 2 parts of MARLOX BR3551 to prepare a micro-emulsified mixed solution;
slowly adding 1/3 emulsified water into the micro-emulsified mixed solution, heating to 45 ℃ while stirring, increasing the stirring speed to 1000r/min, stirring for 30min, cooling to 30 ℃, and continuously stirring for 20min by using 1.5 parts of sodium benzoate, 2 parts of potassium sorbate and the rest emulsified water to obtain the water-soluble concrete release agent.
The grade and other technical indexes of the raw materials adopted in the preparation method, the examples and the comparative examples can be selected according to the prior art, and if the technical indexes are specified in the invention, the technical indexes are selected within the range specified in the invention, so that the technical effect of the invention is not influenced.
The aqueous concrete release agents obtained in examples 1-4 and comparative examples 1-11 are measured according to JC/T949-2020 Release agent for concrete products, and the results of the tests on the stability, the drying film-forming time, the release performance, the secondary operability of the concrete surface, the corrosion action on a steel mould and the limit service temperature all meet the requirements of JC/T949-:
TABLE 1 test results of the aqueous concrete mold release agent obtained in examples 1 to 4 and comparative examples 1 to 11
The test data of the above examples and comparative examples show that the technical effect of the examples is stronger than that of the comparative examples, and the test results of the comparative examples 1 and 4 show that the release agent performance is slightly reduced when the high alcohol modification is not adopted, because the lubricating property and the film forming property of the palm oil which is not modified by the high alcohol are poorer than those of the modified palm oil. The test results of the comparative example 2 and the example 4 show that when no penetrant or defoaming agent is added, the demolding performance is poorer, the rebound strength is lower, and the number of surface pores per square meter is increased rapidly, because the demolding agent cannot penetrate into the internal pores of the concrete, and the lubricating degree between the concrete and the template is insufficient due to the fact that air bubbles in the use process of the demolding agent cannot be eliminated, so that demolding is difficult; the test results of the comparative example 3 and the example 4 show that the demolding performance is poor without adding the defoaming agent, and the number of pores on the surface per square meter is very high, because the penetrant is added into the demolding agent system of the technical scheme of the invention, a large amount of bubbles are generated, so that the number of pores is increased rapidly; the test results of comparative example 4, comparative example 3 and example 4 show that the number of bubbles is slightly decreased as compared with comparative example 3 when only the antifoaming agent is added, but the releasing property and the like are further decreased as compared with comparative example 3 because in the absence of the penetrant, although a large amount of bubbles is not generated, the releasing agent cannot penetrate into the pores inside the concrete, thus causing the releasing property to be decreased. The test results of comparative example 5, comparative example 3 and example 4 show that, when no defoaming agent is added and penetrant is added in the subsequent step, the test result of comparative example 5 is worse than that of example 4 and worse than that of comparative example 3 except for the number of surface pores per square meter, because the penetrant can cause the release agent to be easier to permeate into the internal pores of the concrete, and the penetrant added in the subsequent step can cause the corresponding components of the penetrant and the release agent to be not tightly combined because of insufficient emulsification, so that the corresponding components of the release agent cannot effectively permeate into the internal pores of the concrete, but the penetrant added later can increase the generation of bubbles, and the bubbles cannot disappear because no defoaming agent is added, so that the resilience strength is reduced; comparative examples 6 and 7 are inferior to example 4 in performance, and both are delaminated, because the release agent of the present invention can be stabilized only by the combined use of the anionic water-soluble emulsifier and the nonionic water-soluble emulsifier, thereby exerting the technical effects of the release agent of the present invention; comparative example 8 was inferior in performance to example 4 because the defoaming component used in comparative example 10 was inferior in defoaming effect to polyoxyethylene oleyl ether used in example, and more bubbles were generated; comparative example 9 is inferior to example 4 in performance because soybean oil contains 50 to 60% of linolenic acid, which is an unsaturated acid and is easily oxidized, resulting in poor mold release effect, while palm oil contains 50% of saturated fat, which forms a lubricating layer, is advantageous to mold release and has good apparent quality; the performance of comparative example 10 is slightly reduced compared with that of example 4, because the penetrating agent adopted in comparative example 10 has a poor effect compared with the sodium di-sec-octyl maleate sulfonate adopted in the example, and is not beneficial to the release agent to penetrate into the inner holes of the concrete to eliminate air bubbles. Comparative example 11 is inferior to example 4 in performance because 1-tridecanol used in comparative example 11, which is not a specific structure of tridecanol, is liable to be coagulated at low temperature, is not favorable for smearing and dispersion, resulting in a decrease in mold release effect.
Because the palm oil is modified by tridecanol with a special structure, the SAFOL23 and MARLIPAL O13 are colorless and transparent half-branched fatty alcohols, have good low-temperature performance and are easy to biodegrade, and the low-temperature stability and the emulsion stability of the product are improved, and the modified palm oil has strong lubricity, low surface energy and film forming capability, thereby improving the surface quality of concrete and reducing the ash staining of a mould. However, the penetrant will cause a large amount of bubbles to be generated, the stable emulsion will cause the bubbles not to disappear easily, the general defoaming component will break the bubbles and defoam by reducing the surface tension of the bubbles, when the emulsion is ultra-stable, the surface tension of the bubbles can not reach the better defoaming effect, and the polyoxyethylene oleyl ether is a solubilizing defoamer, which can not only reduce the surface tension of the bubbles but also solubilize the penetrant in the release agent system, thus further improving the penetration effect and realizing the defoaming effect.
In conclusion, compared with the prior art, the water-based concrete release agent provided by the invention adopts environment-friendly and renewable palm oil as a raw material and tridecanol with a special structure for modification, so that the dependence of the traditional release agent on mineral oil is eliminated, the comprehensive utilization of vegetable oil is realized, and the environmental pollution and the human harm are reduced, thereby improving the surface quality of concrete and reducing the dust adhesion of a mould; the penetrating agent is added, so that the defoaming component can penetrate into the surface layer, the internal pore structure is eliminated, the internal structure of the concrete is compact, and the durability of the concrete is improved; the introduction of the material containing the defoaming component eliminates apparent bubbles, greatly reduces the number of air holes on the surface of the concrete, and the defoaming component can avoid serious bubble marks on the surface of the concrete caused by a large amount of bubbles generated by adding a penetrating agent, thereby achieving the effects of easily demoulding and keeping the apparent integrity of the concrete, and further achieving the purposes of easily demoulding and keeping the apparent integrity of the concrete. Therefore, the prepared concrete release agent has the characteristics of good demolding effect, high apparent quality, high compressive strength of concrete and good durability.
Furthermore, the invention adopts the mutual matching of the anionic water-soluble emulsifier and the nonionic water-soluble emulsifier, and combines the oil-soluble emulsifier, so that the whole emulsifying system is more stable.
In addition, it will be appreciated by those skilled in the art that, although there may be many problems with the prior art, each embodiment or aspect of the present invention may be improved only in one or several respects, without necessarily simultaneously solving all the technical problems listed in the prior art or in the background. It will be understood by those skilled in the art that nothing in a claim should be taken as a limitation on that claim.
Although terms such as basic catalyst, water-soluble emulsifier, oil-soluble emulsifier, anionic water-soluble emulsifier, nonionic water-soluble emulsifier, penetrant, antifoaming component, rust inhibitor, preservative, etc., are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention; the terms "first," "second," and the like in the description and in the claims, if any, of the embodiments of the invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. An aqueous concrete release agent is characterized in that: the plant oil emulsifier is prepared by emulsifying an emulsified product under the participation of an emulsifier, wherein the emulsifier comprises a water-soluble emulsifier and an oil-soluble emulsifier; the higher alcohol is a mixture of dodecanol and tridecanol;
the defoaming component is polyoxyethylene oleyl ether and is used for eliminating bubble marks generated by the penetrating agent;
the penetrating agent is used for enabling the defoaming component to penetrate into a hole structure inside the concrete;
the water-based concrete release agent is characterized in that the raw materials comprise 10-20 parts of high-carbon alcohol, 0.5-5 parts of alkaline catalyst, 10-95 parts of vegetable oil, 3-10 parts of oil-soluble emulsifier, 1-3 parts of penetrant, 1-3 parts of defoaming component, 4-20 parts of water-soluble emulsifier and 20-80 parts of water;
the molecular formula of the tridecanol is as follows:
The alkaline catalyst is sodium hydroxide;
the vegetable oil is palm oil;
the water-soluble emulsifier is formed by compounding an anionic water-soluble emulsifier and a nonionic water-soluble emulsifier;
the penetrant is di-sec-octyl maleate sodium sulfonate;
the water-based concrete release agent is characterized by comprising the following steps:
adding vegetable oil into a reaction kettle, adding a catalyst, raising the temperature to 50-70 ℃, introducing nitrogen, adding high-carbon alcohol, continuously raising the temperature to 110-130 ℃, and reacting for 1-3 hours to form modified vegetable oil;
adding a water-soluble emulsifier into a stirring container, adding water, and heating to 40-60 ℃ while stirring to form emulsified water;
mixing a penetrant, the modified vegetable oil and an oil-soluble emulsifier, heating to 40-60 ℃, stirring completely and uniformly, and then adding a defoaming component to prepare a micro-emulsified mixed solution;
slowly adding emulsified water into the micro-emulsified mixed solution, heating to 40-60 ℃ while stirring, stirring until the emulsion becomes milky, stopping adding the emulsified water, cooling after stirring, and continuously stirring the rust inhibitor, the preservative and the rest emulsified water to obtain the water-based concrete release agent.
2. The aqueous concrete mold release agent according to claim 1, characterized in that: the palm oil is 24 degrees, 44 degrees, 52 degrees or 58 degrees palm oil.
3. The aqueous concrete mold release agent according to claim 1, characterized in that: the mass ratio of the anionic water-soluble emulsifier to the nonionic water-soluble emulsifier is 1: 1.
4. The aqueous concrete release agent according to claim 1, characterized in that: the anionic water-soluble emulsifier is one or more of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium stearate, the nonionic water-soluble emulsifier is polyethylene glycol oleate, and the polyethylene glycol oleate is one or more of PEG600MO, PEG600DO, PEG400MO and PEG400 DO.
5. The aqueous concrete mold release agent according to claim 1, characterized in that: the oil-soluble emulsifier is sorbitan fatty acid ester, and the sorbitan fatty acid ester comprises one or more of S-85, S-80, S-60 and S-40.
6. The aqueous concrete mold release agent according to claim 1, characterized in that: also comprises a rust inhibitor and a preservative; the rust inhibitor is 0.1-2 parts of sodium benzoate; the preservative is potassium sorbate 0.1-2 parts.
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