CN116716135A - Defoaming concrete release agent and preparation method thereof - Google Patents
Defoaming concrete release agent and preparation method thereof Download PDFInfo
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- CN116716135A CN116716135A CN202310586357.1A CN202310586357A CN116716135A CN 116716135 A CN116716135 A CN 116716135A CN 202310586357 A CN202310586357 A CN 202310586357A CN 116716135 A CN116716135 A CN 116716135A
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- 239000004567 concrete Substances 0.000 title claims abstract description 134
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 70
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 26
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 22
- WIBFFTLQMKKBLZ-SEYXRHQNSA-N n-butyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCCC WIBFFTLQMKKBLZ-SEYXRHQNSA-N 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims abstract description 20
- 229920002545 silicone oil Polymers 0.000 claims abstract description 20
- VFKZECOCJCGZQK-UHFFFAOYSA-M 3-hydroxypropyl(trimethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CCCO VFKZECOCJCGZQK-UHFFFAOYSA-M 0.000 claims abstract description 19
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 19
- -1 polyethylene Polymers 0.000 claims abstract description 19
- 239000004698 Polyethylene Substances 0.000 claims abstract description 18
- 229920000573 polyethylene Polymers 0.000 claims abstract description 18
- 239000012153 distilled water Substances 0.000 claims abstract description 12
- 229920002907 Guar gum Polymers 0.000 claims abstract description 8
- 239000000665 guar gum Substances 0.000 claims abstract description 8
- 229960002154 guar gum Drugs 0.000 claims abstract description 8
- 235000010417 guar gum Nutrition 0.000 claims abstract description 8
- 239000000839 emulsion Substances 0.000 claims description 56
- 238000006243 chemical reaction Methods 0.000 claims description 31
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 14
- 229940083037 simethicone Drugs 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 244000007835 Cyamopsis tetragonoloba Species 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 238000004945 emulsification Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 7
- 239000006082 mold release agent Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 239000013530 defoamer Substances 0.000 claims description 3
- 238000004383 yellowing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 31
- 230000001050 lubricating effect Effects 0.000 abstract description 8
- 230000002195 synergetic effect Effects 0.000 description 28
- 239000000203 mixture Substances 0.000 description 13
- 239000012528 membrane Substances 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 10
- 210000004379 membrane Anatomy 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000009472 formulation Methods 0.000 description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 6
- 239000007921 spray Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 230000002209 hydrophobic effect Effects 0.000 description 5
- 229910021487 silica fume Inorganic materials 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000036571 hydration Effects 0.000 description 3
- 238000006703 hydration reaction Methods 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229940008099 dimethicone Drugs 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 239000012875 nonionic emulsifier Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 150000008130 triterpenoid saponins Chemical class 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/16—Paraffin waxes; Petrolatum, e.g. slack wax
-
- 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
-
- 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
-
- 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
-
- 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
- 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
-
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
-
- 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
-
- 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
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- 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
- C10N2030/18—Anti-foaming property
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses a defoaming concrete release agent and a preparation method thereof, wherein the defoaming agent is not contained in the scheme, and the defoaming agent is formed by the cooperation of 17-19 parts of dimethyl silicone oil, 8.8-9.6 parts of emulsifying agent, 3.5-3.9 parts of polyethylene glycol-2000,1.7-2.1 parts of guar gum hydroxypropyl trimethyl ammonium chloride, 7.2-7.6 parts of triethanolamine, 3.5-3.9 parts of butyl oleate and 54-56 parts of distilled water. The defoaming concrete release agent can form a layer of lubricating film with defoaming effect on the template, so that the smooth and flat surface of the concrete after the demolding is ensured, and the early strength of the concrete can develop normally.
Description
Technical Field
The invention relates to a release agent, in particular to a concrete release agent.
Background
The concrete release agent is an important external additive in concrete construction, and is smeared on the surface of a concrete template, and a layer of lubricating film is constructed between the template and poured concrete so as to ensure smooth release. Has important influence on the appearance quality of concrete.
In the use of common concrete release agents in the current market, the phenomenon that the release agent has an adsorption effect on concrete bubbles exists. Air bubbles in the concrete adhere to the formwork through the release agent and cannot be discharged. Thereby causing quality problems such as bubbles, air holes, honeycomb pitting surface and the like in the appearance of the concrete.
Chinese patent application publication No. CN112877123a discloses a defoaming release agent for concrete, which comprises the following raw materials: 21.0 to 38.0 weight percent of methyl silicone oil, 4.2 to 8.9 weight percent of liquid paraffin, 4.3 to 9.6 weight percent of silica fume, 3.8 to 8.6 weight percent of natural rosin resin, 7.9 to 14.8 weight percent of nonionic emulsifier, 1.0 to 3.0 weight percent of stabilizer, 1.2 to 2.2 weight percent of defoamer and the balance of water. According to the scheme, the silica fume is introduced as a component to serve as a defoaming agent, and serves as hydrophobic solid particles, so that the hydrophobic end of the surfactant is firstly attracted to the surface of the concrete, the hydrophobic silica fume becomes hydrophilic, the concentration of the surfactant in a concrete surface system is reduced, and foam rupture is promoted; the composite active ingredient composed of emulsified methyl silicone oil and silica fume spreads on the surface of the foam elastic membrane, and further diffuses and permeates on the surface of the membrane, so that the membrane wall is quickly thinned, a balance and stability system of the foam is destroyed, and the foam is strongly pulled by liquid with high tension on the surrounding surface, so that foam breaking is caused, and a good defoaming effect is achieved.
However, the defoaming release agent for concrete formed by the scheme specifically adopts methyl silicone oil to be matched with triterpenoid saponin, alkyl glycoside, span80, tween 60 and other surfactants to form emulsified methyl silicone oil through high-temperature emulsification, so that the emulsion becomes oil-in-water type stable emulsion with uniform distribution, the stability of the formed emulsion is not high, and meanwhile, the defoaming agent is required to be matched with a corresponding defoaming agent to realize defoaming, so that the defoaming agent is not suitable for defoaming templates such as steel templates and aluminum templates in concrete production, and meanwhile, the overall cost of the defoaming agent is high.
Disclosure of Invention
Aiming at the problems of the existing defoaming release agent for concrete, the invention aims to provide the defoaming release agent for concrete, which can form a layer of lubricating film with defoaming effect on a template under the condition of not adopting the defoaming agent, so as to ensure the smooth and even surface of the concrete after the demolding; furthermore, the invention also provides a preparation method of the defoaming concrete release agent.
In order to achieve the above purpose, the defoaming agent for concrete provided by the invention does not contain a defoaming agent and comprises the following components in parts by weight:
in some examples of the invention, the emulsifier is formed from span80 in combination with X-100.
In some examples of the invention, the emulsifier has a span80 to X-100 ratio of 1:1.
In order to achieve the above object, the preparation method of the defoaming concrete release agent provided by the invention comprises the following steps:
adding dimethyl silicone oil and distilled water into a reaction kettle in proportion, and stirring to fully disperse the dimethyl silicone oil in the distilled water;
continuously adding span80 and x-100 in the reaction kettle in proportion, and stirring to fully emulsify the simethicone, wherein the liquid in the reaction kettle is milky;
continuously adding polyethylene glycol-2000 and guar hydroxypropyl trimethyl ammonium chloride into a reaction kettle in proportion to react, so that the polyethylene glycol-2000 and the guar hydroxypropyl trimethyl ammonium chloride are fully dissolved, and enabling liquid in the reaction kettle to be thick white emulsion;
and (4) continuously adding triethanolamine and butyl oleate into the reaction kettle in proportion to react, so that the liquid in the reaction kettle is a yellow sticky white emulsion.
In some examples of the invention, the method of preparation comprises the step of forming the viscous white emulsion in the form of yellowing formed in step (4) into a homogenously dispersed emulsion, and cooling to room temperature.
In some examples of the invention, when the simethicone is stirred and dispersed in the step (1), the temperature is 24-26 ℃, the stirring speed is 800-1000r/min, and the reaction is 30-35min.
In some examples of the present invention, the temperature is 24-26 ℃ and the stirring speed is 1200-1400r/min, and the reaction is 50-60min when the emulsification reaction is performed in the step (2).
In some examples of the invention, the reaction in step (3) is carried out at a temperature of 24-26℃for 50-60min.
The defoaming concrete release agent provided by the invention does not contain a defoaming agent, can form a layer of lubricating film with a defoaming effect on a template, and ensures that the concrete surface is smooth and flat after the form is removed, and the early strength of the concrete is normally developed.
In order to be suitable for defoaming templates such as steel templates and aluminum templates, the defoaming concrete release agent provided by the invention innovatively adopts 1000cSt of dimethyl silicone oil to form the emulsion film and cooperates with other components, so that the stability of the emulsion film structure can be effectively ensured, and meanwhile, the defoaming concrete release agent has good expelling and eliminating effects on bubbles, does not need to be additionally added with a defoaming agent, and can be suitable for defoaming templates such as steel templates and aluminum templates in concrete production.
On this basis, through adding butyl oleate in this defoaming type concrete release agent to make the emulsion membrane that forms possess lubrication effect and hydrophobic effect simultaneously, thereby separation concrete reaction system is to the destruction of emulsion membrane on the template, ensure emulsion membrane structure's stability, thereby guarantee that the emulsion membrane structure that forms can keep the best expelling and eliminate the performance state of bubble, need not add the defoaming agent in addition, can be applicable to the defoaming of templates such as steel form, aluminum form in the concrete production.
Further, the foam-removing type concrete release agent can play a role in dispersing cement paste and accelerating hydration of the concrete surface by adding corresponding triethanolamine as a cement grinding aid material.
Furthermore, the defoaming concrete release agent ensures the working efficiency of an emulsion film structure on a template and a hydration structure on the surface of concrete simultaneously through the synergistic effect of 1000cSt of dimethyl silicone oil and triethanolamine during application.
Detailed Description
The invention is further described below with reference to specific examples in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect achieved by the invention easy to understand.
In order to avoid adsorbing concrete bubbles and adding a corresponding defoaming agent into the concrete bubbles to realize a defoaming effect, the scheme of the invention abandons the conventional design thought, and innovatively provides the defoaming concrete release agent which does not contain the defoaming agent, so that a layer of lubricating film with a defoaming effect can be formed on a template, the concrete bubbles can be rapidly eliminated, the concrete bubbles are prevented from being adsorbed, and the smooth and flat surface of the concrete after the form removal is ensured.
Accordingly, the defoaming concrete release agent provided by the invention does not contain a defoaming agent in the components, and specifically consists of 1000cSt of simethicone, an emulsifying agent, polyethylene glycol-2000, guar hydroxypropyl trimethyl ammonium chloride, triethanolamine, butyl oleate and distilled water according to a specific proportion.
In the foam-removing agent for concrete, 1000cSt of dimethyl silicone oil forms an emulsion film structure which can be suitable for defoaming templates such as steel templates, aluminum templates and the like in concrete production; meanwhile, the triethanolamine accelerates hydration on the surface of the concrete to form a stable surface structure of the concrete, and the butyl oleate is used for blocking permeation between two membrane structures and performing lubrication, so that two membranes are formed on the surfaces of the steel template and the aluminum template.
On the basis, the scheme of the invention further provides a specific synergistic formula of each component in the defoaming type concrete release agent.
The defoaming concrete release agent comprises the following components in parts by weight:
in the synergistic formula, the 1000cSt dimethyl silicone oil and the emulsifier are adopted to perform synergistic effect, a high-stability film structure is formed after emulsification, meanwhile, the synergistic formula has good expelling and eliminating effects on bubbles, and the optimal expelling and eliminating performance can be kept based on the stable film structure.
Through a large number of experiments and creative labor, it is determined that the emulsion film is formed through 1000cSt of dimethyl silicone oil and is synergistic with other components, so that the stability of the emulsion film structure can be effectively ensured, meanwhile, the emulsion film has good expelling and eliminating effects on bubbles, no additional defoaming agent is needed, and the emulsion film can be suitable for defoaming of templates such as steel templates and aluminum templates in concrete production.
Through a great deal of experiments and creative labor, it is determined that if dimethyl silicone oil with the viscosity lower than 1000cSt is adopted, the generated emulsion film is fragile; if simethicone with too high viscosity is adopted, the energy consumption in the emulsification process is excessive and the cost is high.
Meanwhile, in the synergistic formulation, 17-19 parts of 1000cSt dimethyl silicone oil is preferably adopted in every 100 parts of defoaming concrete release agent, so that the optimal synergistic effect with other components can be formed, the stability of an emulsion film structure is ensured, and the synergistic formulation is suitable for the good expelling and eliminating effects of templates such as steel templates, aluminum templates and the like on bubbles under the condition that no defoaming agent is added. If the ratio is higher or lower than the ratio, the stability of the formed emulsion film structure is affected, so that the expelling and extinguishing effects on the bubbles are affected, and good expelling and extinguishing effects on the bubbles cannot be formed without adding an antifoaming agent.
In the synergistic formulation, 1000cSt of dimethicone was emulsified with an emulsifier. In order to achieve efficient emulsification, the emulsifier in the present embodiment is a composite emulsifier, preferably formed by combining span80 and op-10, and the dosage ratio between span80 and op-10 is 1:1, and after mixing span80 and op-10, the HLB value is between 9 and 10, preferably the HLB value is 9.4. Meanwhile, the ratio of the dosage of the formed composite emulsifier to the dosage of the dimethyl silicone oil is 1:2.
still further, the ratio of span80 to op-10 in the present synergistic formulation was 1:1, while the ratio of the amount of the composite emulsifier formed to the amount of simethicone of 1000cSt was 1:2, whereby a stable emulsion free from delamination can be obtained by emulsifying 1000cSt of simethicone. If the amount of the emulsifier is less than the ratio, the emulsion is unstable and is liable to be layered; if the amount of the emulsion is higher than this ratio, the emulsification effect is also affected and the production cost is also increased unnecessarily.
In the synergistic formula, polyethylene glycol-2000 and guar gum hydroxypropyl trimethyl ammonium chloride are adopted to stabilize and strengthen emulsion emulsified by 1000cSt dimethyl silicone oil, and stability of an emulsified membrane structure formed by the emulsified 1000cSt dimethyl silicone oil is guaranteed, so that the formed emulsified membrane structure can keep the optimal performance state of expelling and eliminating bubbles for a long time, and an antifoaming agent is not required to be added in addition, so that the synergistic formula can be suitable for defoaming templates such as steel templates and aluminum templates in concrete production.
Specifically, the long-term stability of the product is effectively improved by the combination of polyethylene glycol-2000 and guar hydroxypropyl trimethyl ammonium chloride, the polyethylene glycol-2000 in the formula plays a role in dispersing so that the inside of the emulsion is more uniform, and meanwhile, the guar hydroxypropyl trimethyl ammonium chloride plays a role in thickening so that the internal cohesion of the emulsion is higher.
The polyethylene glycol-2000, i.e., 2000 molecular weight polyethylene glycol, is not limited herein for a particular model and manufacturer, and may be according to practical requirements.
Meanwhile, in the synergistic formulation, 3.5-3.9 parts of polyethylene glycol-2000 is preferably adopted in every 100 parts of defoaming concrete release agent, so that the uniformity inside the emulsion can be optimized. If the proportion is too low, the emulsion is non-uniform after storage, and if it is too high, the unnecessary cost is increased.
Preferably, guar hydroxypropyl trimethyl ammonium chloride in the scheme adopts MV medium viscosity, and the viscosity of a 1% aqueous solution is more than or equal to 5000 Pa.s, so that the internal cohesion of the emulsion is higher.
Meanwhile, in every 100 parts of defoaming concrete release agent in the synergistic formula, preferably 1.7-2.1 parts of guar gum hydroxypropyl trimethyl ammonium chloride is adopted, so that the proportion of optimal performance is achieved, the uniformity and consistency balance of emulsion can be ensured, and the balance between the uniformity and consistency of the emulsion can be influenced by the excessively high or excessively low proportion.
The triethanolamine in the synergistic formula can play a certain emulsification effect, can form an emulsification synergistic effect with 1000cSt of dimethyl silicone oil, improves the emulsification effect of 1000cSt of dimethyl silicone oil, and can play a role in early strength of concrete, so that the surface compactness of the concrete can be improved, and the loss of internal curing water can be blocked.
Preferably, the triethanolamine in the scheme is generally chemically pure triethanolamine when actually selected, and the specific model is not limited and can be determined according to actual requirements.
Meanwhile, in the synergistic formulation, 7.2-7.6 parts of triethanolamine are preferably adopted in every 100 parts of defoaming concrete release agent, so that the synergistic effect of the triethanolamine is optimal. Aiming at the triethanolamine in the formula scheme, if the dosage of the triethanolamine is too high, the early strength function can be lost, and if the dosage of the triethanolamine is too low, the retarding effect can occur, so that the development of the concrete strength is not facilitated.
In the synergistic formulation, butyl oleate is used to enhance the lubricity of the film structure formed by emulsified dimethicone.
According to the synergistic formula, butyl oleate is added, so that the formed emulsion film has a lubricating effect and a hydrophobic effect, the emulsion film on the template is prevented from being damaged by a concrete reaction system, the stability of the emulsion film structure is guaranteed, the formed emulsion film structure can keep the best performance state of expelling and eliminating bubbles, an antifoaming agent is not required to be added, and the synergistic formula can be suitable for defoaming templates such as steel templates and aluminum templates in concrete production.
Preferably, the butyl oleate in the scheme is generally chemically pure butyl oleate in actual selection, the specific model is not limited, and the butyl oleate can be determined according to actual requirements.
Meanwhile, 3.5-3.9 parts of butyl oleate is preferably adopted in every 100 parts of defoaming concrete release agent in the synergistic formula, so that the synergistic effect of the butyl oleate is optimal. Compared with the proportion in the formula, the dosage of the butyl oleate in the formula scheme can lead to insufficient hydrophobicity and lubricity of a film structure and unstable emulsion films if the dosage is too low.
The foam-removing concrete release agent formed by the method is emulsion liquid, the foam-removing concrete release agent is formed by emulsifying dimethyl silicone oil based on a composite emulsifier formed by span80 and op-10 to form a film structure with a foam-removing function, meanwhile, the emulsion is stabilized and reinforced through glycol-2000 and guar gum hydroxypropyl trimethyl ammonium chloride, and the lubricity of the film structure is further improved through butyl oleate, so that a layer of lubricating film with the foam-removing function is formed on a template, and the smooth and flat surface of the concrete after the form is removed is ensured; on the basis, the surface compactness of the concrete is further improved through triethanolamine, so that the loss of internal curing water is blocked, and the early strength normal development of the concrete is ensured.
Aiming at the defoaming concrete release agent provided by the invention, a corresponding preparation scheme is further provided.
The preparation scheme is based on the synergistic formula of the defoaming concrete release agent, and is concretely as above. The preparation equipment that adopts simultaneously includes reation kettle, storage tank.
Here, the preparation process of the defoaming type concrete mold release agent according to the present invention will be described by taking 100 parts of the defoaming type concrete mold release agent prepared under the test temperature of 25.+ -. 5 ℃.
Firstly, 17-19 parts of dimethyl silicone oil and 54-56 parts of distilled water are added into a reaction kettle, the temperature is set to be 24-26 ℃, the stirring speed is 800-1000r/min, and the reaction is carried out for 30-35min. So that the simethicone is fully dispersed in distilled water.
Secondly, adding 4.4-4.8 parts of span80,4.4-4.8 parts of x-100 into a reaction kettle, wherein the temperature is 24-26 ℃, the stirring speed is 1200-1400r/min, and reacting for 50-60min. So that the simethicone is fully emulsified, and the liquid in the reaction kettle is milky white.
Thirdly, adding 3.5-3.9 parts of polyethylene glycol-2000, 1.7-2.1 parts of guar gum hydroxypropyl trimethyl ammonium chloride, setting the temperature to be 24-26 ℃, and reacting for 50-60min to enable the polyethylene glycol-2000 and the guar gum hydroxypropyl trimethyl ammonium chloride to be fully dissolved, wherein the liquid in the reaction kettle is a viscous white emulsion.
Fourthly, adding 7.2 to 7.6 parts of triethanolamine, 3.5 to 3.9 parts of butyl oleate, setting the temperature to be 24 to 26 ℃ and reacting for 45 to 50 minutes. The liquid in the reaction kettle is a yellow viscous white emulsion.
Fifthly, forming homogenously dispersed emulsion in the reaction kettle, cooling to room temperature, and transferring to a storage tank for storage.
In the scheme, when the defoaming concrete release agent is prepared based on 1000cSt of simethicone, an emulsifier, polyethylene glycol-2000, guar gum hydroxypropyl trimethyl ammonium chloride, triethanolamine and butyl oleate, the preparation can be completed at normal temperature without specific temperature conditions; meanwhile, based on the synergistic reaction effect between the components, the components are required to be matched according to the steps (one) to (five) in sequence, otherwise, the performance of the defoaming concrete release agent is unstable, and the defoaming effect is affected.
When the defoaming concrete release agent prepared based on the formula and the preparation method provided by the invention is specifically applied, in order to ensure the effect of practical application, a corresponding application scheme is further provided for the defoaming concrete release agent provided by the invention. The corresponding application process is as follows:
(1) And mixing the prepared defoaming concrete release agent with concrete curing water 1:4 blending and uniformly stirring to form a uniformly dispersed emulsion.
Based on the composition and performance characteristics of the defoaming concrete release agent in the scheme, the defoaming concrete release agent and the concrete curing water are required to be mixed according to the following ratio of 1:4 to ensure the performance effect in application, if the proportion is too high, the mucous membrane phenomenon is easy to occur, and if the proportion is too low, the lubricating ability is insufficient.
(2) The emulsion mixture formed in the step (1) is applied to the surface of a concrete form at a rate of about 100g per 1 square meter.
In the step, the coating proportion of 100g of emulsion mixture is used for coating every 1 square meter so as to ensure that the defoaming effect and the demolding effect reach better effects.
(3) And (5) concrete construction and form removal. And (3) coating a demoulding and curing integrated agent on the concrete pouring surface.
The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. The experimental procedures, which are not specified in the following examples, are generally determined according to national standards. If the corresponding national standard does not exist, the method is carried out according to the general international standard, the conventional condition or the condition recommended by the manufacturer.
Unless defined or otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In addition, any method and material similar or equivalent to those described may be used in the methods of the present invention.
Case 1
The example is directed to C30 concrete, and the defoaming concrete release agent and the common hydraulic oil release agent formed by the scheme of the invention are respectively used for treatment.
The defoaming concrete mold release agent prepared in this example does not contain a defoaming agent, and is formed by 17 parts of simethicone, 9.6 parts of an emulsifier, 3.9 parts of polyethylene glycol-2000,2.1 parts of guar hydroxypropyl trimethyl ammonium chloride, 7.6 parts of triethanolamine, 3.8 parts of butyl oleate and 56 parts of distilled water in a synergistic manner according to the preparation process.
And further mixing the prepared defoaming concrete release agent with concrete curing water 1:4 blending, uniformly stirring to form uniformly dispersed emulsion; the resulting emulsion mixture was then applied to the surface of a C30 concrete form test piece at a rate of about 1 square meter using 100g and left outdoors without any additional measures.
Meanwhile, aiming at the same C30 concrete template test piece, common hydraulic oil release agent is adopted for spray curing treatment according to a standard curing room.
Aiming at C30 concrete, the defoaming concrete release agent and the common hydraulic oil release agent are used, and the comparison result of the release effect is as follows:
| sequence number | Curing conditions | Surface bubble area ratio |
| 1 | Spray curing in standard curing room | 10％ |
| 2 | The defoaming concrete release agent is smeared, and no other measures are taken when the foam is placed outdoors | 3％ |
Case 2
The example is directed to C40 concrete, and the defoaming concrete release agent and the common hydraulic oil release agent formed by the scheme of the invention are respectively used for treatment.
The defoaming concrete mold release agent prepared in this example does not contain a defoaming agent, and is composed of 18 parts of simethicone, 9.2 parts of an emulsifier, 3.7 parts of polyethylene glycol-2000,2.0 parts of guar hydroxypropyl trimethyl ammonium chloride, 7.5 parts of triethanolamine, 3.6 parts of butyl oleate and 56 parts of distilled water in a synergistic manner according to the preparation process.
And further mixing the prepared defoaming concrete release agent with concrete curing water 1:4 blending, uniformly stirring to form uniformly dispersed emulsion; the resulting emulsion mixture was then applied to the surface of a C40 concrete form test piece at a rate of about 1 square meter using 100g and left outdoors without any additional measures.
Meanwhile, aiming at the same C40 concrete template test piece, common hydraulic oil release agent is adopted for spray curing treatment according to a standard curing room.
Aiming at C40 concrete, the defoaming concrete release agent and the common hydraulic oil release agent are used, and the comparison result of the release effect is as follows:
case 3
The example is directed to C50 concrete, and the defoaming concrete release agent and the common hydraulic oil release agent formed by the scheme of the invention are respectively used for treatment.
Defoaming concrete mold release agent prepared and formed in this example
Does not contain defoamer, and is formed by cooperation of 19 parts of simethicone, 9.5 parts of emulsifier, 3.9 parts of polyethylene glycol-2000,2.1 parts of guar hydroxypropyl trimethyl ammonium chloride, 7.6 parts of triethanolamine, 3.9 parts of butyl oleate and 54 parts of distilled water according to the preparation process.
And further mixing the prepared defoaming concrete release agent with concrete curing water 1:4 blending, uniformly stirring to form uniformly dispersed emulsion; the resulting emulsion mixture was then applied to the surface of a C50 concrete form specimen at a rate of about 1 square meter using 100g and left outdoors without any additional measures.
Meanwhile, aiming at the same C50 concrete template test piece, common hydraulic oil release agent is adopted for spray curing treatment according to a standard curing room.
Aiming at C50 concrete, the defoaming concrete release agent and the common hydraulic oil release agent are used, and the comparison result of the release effect is as follows:
| sequence number | Curing conditions | Surface bubble ratio |
| 1 | Spray curing in standard curing room | 3％ |
| 2 | Foam-removing concrete release agent is smeared, and spray curing is carried out in a standard curing room | 0 |
Here, it is explained that the surface bubble area ratio=bubble area/total surface area of the test piece referred to in example 3 above.
The results of the above 3 comparative examples are seen:
(1) The foam-removing agent for the concrete formed by the scheme has the advantages that the area of bubbles on the surface of c30 concrete is only 3%; the bubble area of the surface of the c40 concrete is only 1 percent; c50 concrete surface has almost no bubbles, and unexpected defoaming results are achieved.
(2) The foam-removing agent for concrete formed by the scheme reduces the bubble area of the surface of c30 concrete by 7 percent, reduces the bubble area of the surface of c40 concrete by 6 percent, reduces the bubble area of the surface of c50 concrete by 3 percent,
(3) As can be seen from the two groups of data, the defoaming concrete release agent formed by the scheme has very high improvement effect on the concrete release effect, can effectively reduce the honeycomb pitting surface phenomenon of a concrete test piece and a solid surface, and achieves unexpected effect.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The defoaming concrete release agent is characterized by not containing a defoaming agent and comprising the following components in parts by weight:
17-19 parts of dimethyl silicone oil;
8.8-9.6 parts of emulsifying agent;
3.5-3.9 parts of polyethylene glycol-2000;
guar gum hydroxypropyl trimethyl ammonium chloride 1.7-2.1 parts;
7.2-7.6 parts of triethanolamine;
3.5-3.9 parts of butyl oleate;
54-56 parts of distilled water.
2. The defoamer concrete release agent of claim 1, wherein the emulsifier is formed from span80 in combination with X-100.
3. The foam reducing concrete mold release agent according to claim 2, wherein the ratio of span80 to X-100 in the emulsifier is 1:1.
4. The preparation method of the defoaming concrete release agent is characterized by comprising the following steps:
adding dimethyl silicone oil and distilled water into a reaction kettle in proportion, and stirring to fully disperse the dimethyl silicone oil in the distilled water;
continuously adding span80 and x-100 in the reaction kettle in proportion, and stirring to fully emulsify the simethicone, wherein the liquid in the reaction kettle is milky;
continuously adding polyethylene glycol-2000 and guar hydroxypropyl trimethyl ammonium chloride into a reaction kettle in proportion to react, so that the polyethylene glycol-2000 and the guar hydroxypropyl trimethyl ammonium chloride are fully dissolved, and enabling liquid in the reaction kettle to be thick white emulsion;
and (4) continuously adding triethanolamine and butyl oleate into the reaction kettle in proportion to react, so that the liquid in the reaction kettle is a yellow sticky white emulsion.
5. The method for preparing an antifoaming agent for concrete according to claim 4, which comprises the step of forming a viscous white emulsion in the form of yellowing formed in step (4) into an emulsion liquid dispersed homogeneously and cooling to room temperature.
6. The method for preparing defoaming concrete release agent according to claim 4, wherein the temperature is 24-26 ℃ and the stirring speed is 800-1000r/min and the reaction is 30-35min when the simethicone is stirred and dispersed in the step (1).
7. The method for preparing a defoaming concrete mold release agent according to claim 4, wherein the temperature is 24-26 ℃ and the stirring speed is 1200-1400r/min for 50-60min when the emulsification reaction is performed in the step (2).
8. The method for preparing a defoaming agent for concrete according to claim 4, wherein the reaction in the step (3) is carried out at a temperature of 24 to 26 ℃ for 50 to 60 minutes.
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| Title |
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| 斯沃恩: "贝雷油脂化学与工艺学 第4版 第2册", vol. 7, 31 October 1989, 轻工业出版社, pages: 335 * |
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