CN111979030A - Concrete release agent containing microbial polysaccharide and preparation method thereof - Google Patents
Concrete release agent containing microbial polysaccharide and preparation method thereof Download PDFInfo
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- CN111979030A CN111979030A CN202010971135.8A CN202010971135A CN111979030A CN 111979030 A CN111979030 A CN 111979030A CN 202010971135 A CN202010971135 A CN 202010971135A CN 111979030 A CN111979030 A CN 111979030A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/388—Treating surfaces of moulds, cores, or mandrels to prevent sticking with liquid material, e.g. lubricating
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
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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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- 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
- C10M2207/10—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
- C10M2207/287—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
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/40—Fatty vegetable or animal oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/40—Fatty vegetable or animal oils
- C10M2207/402—Castor oils
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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
- C10M2209/101—Condensation polymers of aldehydes or ketones and phenols, e.g. Also polyoxyalkylene ether derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- 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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- 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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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/12—Polysaccharides, e.g. cellulose, biopolymers
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
- C10M2215/224—Imidazoles
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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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- 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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/08—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions having metal-to-carbon bonds
- C10M2227/083—Sn compounds
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Abstract
A concrete release agent containing microbial polysaccharide and a preparation method thereof are disclosed, wherein the release agent comprises the following raw material components: 3.6-10.8 wt% of ethanol, 14.8-30.7 wt% of deionized water, 7.4-20.5 wt% of PVA7, 3.6-10.8 wt% of microbial polysaccharide, 1.4-4.5 wt% of water-soluble emulsifier, 22.2-40.9 wt% of grease, 3.6-10.8 wt% of fatty acid, 2.1-4.5 wt% of oil-soluble emulsifier, 3.6-10.8 wt% of terpene phenolic resin, 1.4-4.5 wt% of stabilizer and 0.7-3.4 wt% of rust inhibitor. The invention enhances the coating performance and the lubricating performance, has easy demoulding, fast film forming, no corrosion of the template, green and environmental protection, less air bubbles on the surface of the concrete and improves the stability of the emulsified demoulding agent; the release agent has good long-term stability, the product diluent can not be layered for 90 days, and the storage stability at normal temperature is more than or equal to 9 months; the preparation method has simple process, easily controlled conditions and easy industrial production.
Description
Technical Field
The invention relates to a concrete release agent and a preparation method thereof, in particular to a concrete release agent containing polysaccharide and a preparation method thereof.
Background
The release agent is also called as concrete release agent or release lubricant, and is a substance which is coated on the inner wall of a template to play a role in lubrication and isolation, so that the concrete can smoothly separate from the template when the template is removed, and the shape of the concrete is kept intact. The release agent can be divided into solid, solution, emulsion and paste according to appearance; the medicine is divided into disposable and long-lasting according to the action effect; according to chemical components, the soap is divided into soaps, pure oils, water quality, emulsified oils, solvents, polymers, chemically active release agents, paint, organic polymers and the like. The amount of release agent used is also greatly increased due to the rapid development of injection molding, extrusion, calendering, molding, lamination and other processes.
The emulsified oil type release agent in the market at present has a good demolding effect, is the mainstream of concrete release agent products, is easy to delaminate and deteriorate after being stored for a long time, seriously influences the use and demolding effect, and is a problem to be solved in the field.
CN106190512A discloses a concrete water-based release agent and a preparation method thereof, wherein the concrete water-based release agent comprises the following raw material components: the oil emulsion comprises, by weight, 0.2-2.5% of a compound emulsifier, 8.5-14% of engine oil and 85-91% of water, wherein the compound emulsifier is prepared by compounding a nonionic surfactant, a dispersing agent, a film forming agent, an anti-embroidering agent, polyether modified siloxane, a preservative and an emulsion stabilizer, but the engine oil adopted by the scheme has many impurities, is complex and unstable in components, and the quality of products in each batch is changed along with the change of the engine oil, so that the oil emulsion is very unfavorable for large-scale industrial production.
CN111073750A discloses a bare concrete mold release agent and a preparation method thereof, which comprises the following components in parts by weight: 3-5 parts of nano zinc oxide, 0.5-2 parts of a silane coupling agent, 70-90 parts of an acrylate monomer, 50-60 parts of allyl polyoxyethylene ether, 10-20 parts of an organic silicon monomer, 1-5 parts of an emulsifier, 1-2 parts of an initiator, 0.5-1 part of sodium bicarbonate, 0.5-1 part of a defoaming agent, 0.5-1.5 parts of a dispersing agent, 0.5-1.5 parts of a flatting agent, 0.5-1.5 parts of a film-forming assistant, 1-3 parts of a thickening agent and 150-250 parts of deionized water; the modified nano zinc oxide adopted by the method has a photocatalytic effect, so that the release agent is easy to be unstable, easy to decompose under the action of light, and needs to be stored in a dark place, and the storage condition of the release agent is harsh.
CN106318577A discloses an enhanced concrete release agent, which is prepared from the following components in parts by weight: 5-7 parts of polyvinyl alcohol, 3-5 parts of stearic acid, 4-6 parts of modified konjac glucomannan, 10-15 parts of konjac flour, 10-15 parts of chitosan, 10-15 parts of xanthan gum, 3-5 parts of borax, 5-7 parts of montmorillonite powder, 1-3 parts of nano talcum powder, 6-8 parts of sodium carboxymethylcellulose, 3-7 parts of sodium methyl silicate, 2-4 parts of barium sulfate, 20-30 parts of ethanol, 1-3 parts of alkylphenol polyoxyethylene, 1-3 parts of sodium dodecyl sulfate and 0.3-0.9 part of an organic silicon defoaming agent; the method adopts multiple film forming components to form multiple films, improves the film removing effect, obviously reduces the stability of the whole system, and is easy to have the phenomena of precipitation, delamination and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art and provide a concrete release agent containing microbial polysaccharide and a preparation method thereof; the concrete release agent has stable quality and can be stored for a long time; the preparation method has simple process and is easy for industrial production.
The technical scheme adopted by the invention for solving the technical problems is as follows: a concrete release agent containing microbial polysaccharide comprises the following raw material components: 3.6-10.8 wt% of ethanol, 14.8-30.7 wt% of deionized water, 7.4-20.5 wt% of PVA7, 3.6-10.8 wt% of microbial polysaccharide, 1.4-4.5 wt% of water-soluble emulsifier, 22.2-40.9 wt% of grease, 3.6-10.8 wt% of fatty acid, 2.1-4.5 wt% of oil-soluble emulsifier, 3.6-10.8 wt% of terpene phenolic resin, 1.4-4.5 wt% of stabilizer and 0.7-3.4 wt% of rust inhibitor.
The raw material components of the concrete release agent containing the microbial polysaccharide are more preferably: 4.2-8.8 wt% of ethanol, 17.4-29.2 wt% of deionized water, 8.5-16.2 wt% of PVA8, 4.1-7.8 wt% of microbial polysaccharide, 1.7-4.2 wt% of water-soluble emulsifier, 25.4-37.7 wt% of grease, 4.1-7.8 wt% of fatty acid, 2.5-4.2 wt% of oil-soluble emulsifier, 4.2-9.8 wt% of terpene phenolic resin, 1.7-4.2 wt% of stabilizer and 0.8-2.3 wt% of rust inhibitor.
The raw material components of the concrete release agent containing the microbial polysaccharide are preferably as follows: 5.68-6.50 wt% of ethanol, 21.74-22.76 wt% of deionized water, 9.09-13.04 wt% of PVAh, 5.68-6.36 wt% of microbial polysaccharide, 2.27-3.25 wt% of water-soluble emulsifier, 28.46-34.09 wt% of grease, 5.41-6.36 wt% of fatty acid, 2.70-3.48 wt% of oil-soluble emulsifier, 5.68-7.32 wt% of terpene phenolic resin, 2.27-3.25 wt% of stabilizer and 1.14-1.82 wt% of rust inhibitor.
Preferably, the PVA has one or more than two of the designations 088-20, 092-20, 094-27, 096-27 and 100-27.
Preferably, the microbial polysaccharide is any one or a mixture of more than two of xanthan gum, gellan gum, arabic gum and welan gum. The microbial polysaccharide integrates thickening, suspending, emulsifying and stabilizing, has good suspending property and emulsifying property and good water solubility, and is a high-efficiency thickening agent. And is very stable to heat, acid, alkali and salts.
Preferably, the water-soluble emulsifier is one or more than two of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate and OP-10.
Preferably, the oil-soluble emulsifier is one or more of Span-60 (Span 60), Tween-60 (Tween 60), Span-80 (Span 80) and Tween-80 (Tween 80).
Preferably, the oil and fat is natural animal and vegetable oil and fat, and more preferably one or more of soybean oil, corn oil, rapeseed oil, castor oil and cottonseed oil.
Preferably, the fatty acid is one or more of oleic acid, palmitic acid and lauric acid.
Preferably, the stabilizer is di-n-butyltin dilaurate and/or di-n-octyltin dilaurate.
Preferably, the rust inhibitor is alkyl imidazoline, sodium benzoate, JK-H2O (A) one of the compound amino alcohols.
The preparation method of the concrete release agent containing the microbial polysaccharide comprises the following steps:
(1) dissolving ethanol in deionized water, heating to 30-40 deg.C, stirring, adding PVA, stirring, slowly adding microbial polysaccharide and water-soluble emulsifier, and stirring at constant temperature for 30-60min to obtain solution a;
(2) adding oil and fatty acid into the solution a, stirring, slowly pouring an oil-soluble emulsifier, uniformly stirring, adding terpene phenolic resin and a stabilizer, accelerating stirring for 1-2 hours, adding a rust inhibitor, and continuously stirring for 10-30min to obtain the antirust oil.
Preferably, the stirring speed during the accelerated stirring is 5000-8000 rpm, and the stirring speed in other cases is 1000-2000 rpm; the purpose of the accelerated stirring is to make the terpene phenolic resin dissolve faster and make the components emulsified and dispersed more uniformly.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, PVA and terpene phenolic resin are used as main film forming substances, and under the combined action of ethanol, the coating performance and the lubricating performance of the film forming agent are enhanced, so that the demolding is easy and easy, the film forming is faster, a template is not rusted, and the film forming agent is green, environment-friendly, economical and harmless to a human body, and also bubbles on the surface of concrete are reduced to the minimum, and the stability of the emulsified demolding agent is improved through an isolating agent and a stabilizing agent;
(2) the prepared concrete release agent has good long-term stability by utilizing the synergistic thickening and dispersing effects between the microbial polysaccharide organic macromolecules and the stabilizer, the product diluent can not be layered for 90 days, and the storage stability at normal temperature is more than or equal to 9 months;
(3) the preparation method of the concrete release agent has the advantages of simple process, easily controlled conditions and easy industrial production.
Detailed Description
In order to enhance understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are not intended to limit the scope of the present invention.
The chemical raw materials used in the examples are all common commercial products and are obtained by conventional commercial methods.
Example 1
The concrete release agent containing the microbial polysaccharide comprises the following raw material components: 5.68wt% of ethanol, 22.73wt% of deionized water, 11.37wt% of PVA11, 5.68wt% of microbial polysaccharide, 2.27wt% of water-soluble emulsifier, 34.09wt% of grease, 5.68wt% of fatty acid, 3.41wt% of oil-soluble emulsifier, 5.68wt% of terpene phenolic resin, 2.27wt% of stabilizer and 1.14wt% of rust inhibitor; the PVA is 088-20 in the label, the microbial polysaccharide is xanthan gum, the water-soluble emulsifier is sodium dodecyl benzene sulfonate, the oil is corn oil, the fatty acid is oleic acid, the oil-soluble emulsifier is Span-60, the stabilizer is di-n-butyltin dilaurate, and the rust inhibitor is alkyl imidazoline.
The preparation method of the concrete mold release agent containing the microbial polysaccharide comprises the following steps:
(1) dissolving 5 parts of ethanol in 20 parts of deionized water, heating in a water bath to 40 ℃ and uniformly stirring, adding 10 parts of PVA, stirring, slowly adding 5 parts of xanthan gum and 2 parts of sodium dodecyl benzene sulfonate, stirring at constant temperature for 30min to uniformly disperse to form a solution a, and preserving at constant temperature for later use;
(2) adding 30 parts of corn oil and 5 parts of oleic acid into the solution a, stirring and slowly pouring 3 parts of Span-60, uniformly stirring, adding 5 parts of terpene phenolic resin and 2 parts of di-n-butyltin dilaurate, accelerating stirring for 1 hour, adding 1 part of alkyl imidazoline, and continuously stirring for 10min to obtain the product;
in the whole preparation process, the stirring speed during accelerated stirring is 6000 rpm, and the stirring speed under other conditions is 1500 rpm.
Example 2
The concrete release agent containing the microbial polysaccharide comprises the following raw material components: 6.08wt% of ethanol, 21.74wt% of deionized water, 13.04wt% of PVA13, 6.09wt% of microbial polysaccharide, 2.61wt% of water-soluble emulsifier, 30.43wt% of grease, 6.09wt% of fatty acid, 3.48wt% of oil-soluble emulsifier, 6.09wt% of terpene phenolic resin, 2.61wt% of stabilizer and 1.74wt% of rust inhibitor; the PVA is 092-20 in the label, the microbial polysaccharide is xanthan gum, the water-soluble emulsifier is sodium dodecyl benzene sulfonate, the oil is corn oil, the fatty acid is oleic acid, the oil-soluble emulsifier is Tween-60, the stabilizer is di-n-butyltin dilaurate, and the rust inhibitor is alkyl imidazoline.
The preparation method of the concrete mold release agent containing the microbial polysaccharide comprises the following steps:
(1) dissolving 7 parts of ethanol in 25 parts of deionized water, heating in a water bath to 40 ℃ and uniformly stirring, adding 15 parts of PVA, stirring, slowly adding 7 parts of xanthan gum and 3 parts of sodium dodecyl benzene sulfonate, stirring at constant temperature for 40min to uniformly disperse to form a solution a, and storing at constant temperature for later use;
(2) adding 35 parts of corn oil and 7 parts of oleic acid into the solution a, stirring and slowly pouring 4 parts of Tween-60, uniformly stirring, adding 7 parts of terpene phenolic resin and 3 parts of di-n-butyltin dilaurate, accelerating stirring for 1 hour, then adding 2 parts of alkyl imidazoline, and continuing stirring for 30min to obtain the product;
in the whole preparation process, the stirring speed during accelerated stirring is 5000 rpm, and the stirring speed under other conditions is 1000 rpm.
Example 3
The concrete release agent containing the microbial polysaccharide comprises the following raw material components: 6.36wt% of ethanol, 22.73wt% of deionized water, 9.09wt% of PVA9, 6.36wt% of microbial polysaccharide, 2.73wt% of water-soluble emulsifier, 31.82wt% of grease, 6.36wt% of fatty acid, 2.73wt% of oil-soluble emulsifier, 7.27wt% of terpene phenolic resin, 2.73wt% of stabilizer and 1.82wt% of rust inhibitor; the PVA is 094-27 in the label, the microbial polysaccharide is chitosan, the water-soluble emulsifier is sodium dodecyl sulfate, the grease is rapeseed oil, the fatty acid is lauric acid, the oil-soluble emulsifier is Tween-80, the stabilizer is di-n-butyltin dilaurate, and the rust inhibitor is sodium benzoate.
The preparation method of the concrete mold release agent containing the microbial polysaccharide comprises the following steps:
(1) dissolving 7 parts of ethanol in 25 parts of deionized water, heating to 35 ℃ in a water bath, uniformly stirring, adding 10 parts of PVA, stirring, slowly adding 7 parts of chitosan and 3 parts of sodium dodecyl sulfate, stirring at constant temperature for 30min, uniformly dispersing to form a solution a, and preserving at constant temperature for later use;
(2) adding 35 parts of rapeseed oil and 7 parts of lauric acid into the solution a, stirring and slowly pouring 3 parts of Tween-80, uniformly stirring, adding 8 parts of terpene phenolic resin and 3 parts of di-n-butyltin dilaurate, accelerating stirring for 1.5 hours, then adding 2 parts of sodium benzoate, and continuing stirring for 20min to obtain the product;
in the whole preparation process, the stirring speed during accelerated stirring is 8000 rpm, and the stirring speed under other conditions is 1600 rpm.
Example 4
The concrete release agent containing the microbial polysaccharide comprises the following raw material components: 6.50wt% of ethanol, 22.76wt% of deionized water, 12.20wt% of PVA0, 5.69wt% of microbial polysaccharide, 3.25wt% of water-soluble emulsifier, 28.46wt% of grease, 5.69wt% of fatty acid, 3.25wt% of oil-soluble emulsifier, 7.32wt% of terpene phenolic resin, 3.25wt% of stabilizer and 1.63wt% of rust inhibitor; wherein, PVA is 096-27 for the label, the microbial polysaccharide is gellan gum, the water-soluble emulsifier is OP-10, the grease is castor oil, the fatty acid is lauric acid, the oil-soluble emulsifier is Span-80, the stabilizer is di-n-octyl tin dilaurate, and the rust inhibitor is sodium benzoate.
The preparation method of the concrete mold release agent containing the microbial polysaccharide comprises the following steps:
(1) dissolving 8 parts of ethanol in 28 parts of deionized water, heating in a water bath to 30 ℃, uniformly stirring, adding 15 parts of PVA, stirring, slowly adding 7 parts of gellan gum and 4 parts of OP-10, stirring at constant temperature for 50min, uniformly dispersing to form a solution a, and preserving at constant temperature for later use;
(2) adding 35 parts of castor oil and 7 parts of lauric acid into the solution a, stirring and slowly pouring 4 parts of Span-80, uniformly stirring, adding 9 parts of terpene phenolic resin and 4 parts of di-n-octyl tin dilaurate, accelerating stirring for 1 hour, adding 2 parts of sodium benzoate, and continuously stirring for 10min to obtain the finished product;
in the whole preparation process, the stirring speed during accelerated stirring is 7500 r/min, and the stirring speed under other conditions is 1000 r/min.
Example 5
The concrete release agent containing the microbial polysaccharide comprises the following raw material components: 6.31wt% of ethanol, 22.52wt% of deionized water, 10.81wt% of PVA10, 6.31wt% of microbial polysaccharide and water2.70wt% of soluble emulsifier, 31.53wt% of grease, 5.41wt% of fatty acid, 2.70wt% of oil-soluble emulsifier, 7.21wt% of terpene phenolic resin, 2.70wt% of stabilizer and 1.80wt% of rust inhibitor; wherein the PVA is 100-27 in label, the microbial polysaccharide is a rubber cement, the water-soluble emulsifier is OP-10, the grease is castor oil, the fatty acid is lauric acid, the oil-soluble emulsifier is Tween-80, the stabilizer is di-n-octyl tin dilaurate, and the rust inhibitor is JK-H2O (A) a complex aminoalcohol.
The preparation method of the concrete mold release agent containing the microbial polysaccharide comprises the following steps:
(1) dissolving 7 parts of ethanol in 25 parts of deionized water, heating to 30 ℃ in a water bath, uniformly stirring, adding 12 parts of PVA, stirring, slowly adding 7 parts of welan gum and 3 parts of OP-10, stirring at constant temperature for 30min to uniformly disperse to form a solution a, and preserving at constant temperature for later use;
(2) adding 35 parts of castor oil and 6 parts of lauric acid into the solution a, stirring and slowly pouring 3 parts of Tween-80, adding 8 parts of terpene phenolic resin and 3 parts of di-n-octyltin dilaurate after uniformly stirring, accelerating stirring for 2 hours, and then adding 2 parts of JK-H2O (A) compounding amino alcohol and continuing stirring for 10min to obtain the final product;
in the whole preparation process, the stirring speed is 6000 rpm when the stirring is accelerated, and the stirring speed is 2000 rpm under other conditions.
The concrete mold release agent containing the microbial polysaccharide obtained in examples 1 to 5 was measured in accordance with JC/T949-2005 "mold release agent for concrete products", and the drying time, stability and mold release property of the mold release agent in an emulsion state were observed. The results are shown in Table 1.
Table 1 JC/T949-2005 standard and examples 1-5 Performance test results
As can be seen from Table 1, the release agent of the embodiments 1-5 of the invention meets or is superior to the requirements of the standard JC/T949-2005 release agent for concrete products in the aspects of drying time, stability, release performance and the like; as a result of further storage tests, the release agents prepared in examples 1 to 5 remained in a uniform state after being stored at room temperature for 9 months.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, but rather the invention is intended to cover all equivalent variations and modifications within the scope of the invention as defined by the appended claims and the description.
Claims (10)
1. The concrete mold release agent containing microbial polysaccharide is characterized by comprising the following raw material components: 3.6-10.8 wt% of ethanol, 14.8-30.7 wt% of deionized water, 7.4-20.5 wt% of PVA7, 3.6-10.8 wt% of microbial polysaccharide, 1.4-4.5 wt% of water-soluble emulsifier, 22.2-40.9 wt% of grease, 3.6-10.8 wt% of fatty acid, 2.1-4.5 wt% of oil-soluble emulsifier, 3.6-10.8 wt% of terpene phenolic resin, 1.4-4.5 wt% of stabilizer and 0.7-3.4 wt% of rust inhibitor.
2. The microbial polysaccharide-containing concrete mold release agent according to claim 1, wherein the PVA has one or more of designations 088-20, 092-20, 094-27, 096-27, and 100-27.
3. The microbial polysaccharide-containing concrete mold release agent according to claim 1 or 2, wherein the microbial polysaccharide is one or a mixture of two or more of xanthan gum, gellan gum, gum arabic, and welan gum.
4. The concrete mold release agent containing microbial polysaccharides as claimed in any one of claims 1 to 3, wherein the water-soluble emulsifier is one or more of sodium dodecylbenzene sulfonate, sodium dodecyl sulfate and OP-10; the oil-soluble emulsifier is one or more than two of Span-60, Tween-60, Span-80 and Tween-80.
5. The concrete mold release agent containing microbial polysaccharides according to any one of claims 1 to 4, wherein the oil is a natural animal and vegetable oil, preferably one or more of soybean oil, corn oil, rapeseed oil, castor oil and cottonseed oil.
6. The microbial polysaccharide-containing concrete release agent according to any one of claims 1 to 5, wherein the fatty acid is one or more of oleic acid, palmitic acid and lauric acid.
7. The microbial polysaccharide-containing concrete release agent according to any one of claims 1 to 6, wherein the stabilizer is di-n-butyltin dilaurate and/or di-n-octyltin dilaurate.
8. The concrete mold release agent containing microbial polysaccharides as claimed in any one of claims 1 to 7, wherein the rust inhibitor is alkyl imidazoline, sodium benzoate, JK-H2O (A) one of the compound amino alcohols.
9. The method for preparing a concrete mold release agent containing microbial polysaccharides as set forth in any one of claims 1 to 8, comprising the steps of:
(1) dissolving ethanol in deionized water, heating to 30-40 deg.C, stirring, adding PVA, stirring, slowly adding microbial polysaccharide and water-soluble emulsifier, and stirring at constant temperature for 30-60min to obtain solution a;
(2) adding oil and fatty acid into the solution a, stirring, slowly pouring an oil-soluble emulsifier, uniformly stirring, adding terpene phenolic resin and a stabilizer, accelerating stirring for 1-2 hours, adding a rust inhibitor, and continuously stirring for 10-30min to obtain the antirust oil.
10. The method for preparing the concrete mold release agent containing the microbial polysaccharides as claimed in claim 9, wherein the stirring speed during the accelerated stirring is 8000 rpm 5000-.
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