CN117384692B - Concrete release agent and preparation method thereof - Google Patents
Concrete release agent and preparation method thereof Download PDFInfo
- Publication number
- CN117384692B CN117384692B CN202311122497.XA CN202311122497A CN117384692B CN 117384692 B CN117384692 B CN 117384692B CN 202311122497 A CN202311122497 A CN 202311122497A CN 117384692 B CN117384692 B CN 117384692B
- Authority
- CN
- China
- Prior art keywords
- release agent
- concrete
- peroxide
- parts
- acrylic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 64
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 25
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 25
- 239000004593 Epoxy Substances 0.000 claims abstract description 25
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 17
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims abstract description 17
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 17
- 239000004926 polymethyl methacrylate Substances 0.000 claims abstract description 17
- 239000002562 thickening agent Substances 0.000 claims abstract description 14
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 11
- 239000000194 fatty acid Substances 0.000 claims abstract description 11
- 229930195729 fatty acid Natural products 0.000 claims abstract description 11
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 150000002978 peroxides Chemical class 0.000 claims abstract description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 36
- 238000003756 stirring Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 21
- -1 di-tert-butylbenzene peroxide Chemical class 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 11
- YWWVWXASSLXJHU-AATRIKPKSA-N (9E)-tetradecenoic acid Chemical compound CCCC\C=C\CCCCCCCC(O)=O YWWVWXASSLXJHU-AATRIKPKSA-N 0.000 claims description 10
- VLKZOEOYAKHREP-UHFFFAOYSA-N methyl pentane Natural products CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 8
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 7
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- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 7
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- SECPZKHBENQXJG-FPLPWBNLSA-N palmitoleic acid Chemical compound CCCCCC\C=C/CCCCCCCC(O)=O SECPZKHBENQXJG-FPLPWBNLSA-N 0.000 claims description 6
- YWWVWXASSLXJHU-UHFFFAOYSA-N 9E-tetradecenoic acid Natural products CCCCC=CCCCCCCCC(O)=O YWWVWXASSLXJHU-UHFFFAOYSA-N 0.000 claims description 5
- 108010073771 Soybean Proteins Proteins 0.000 claims description 5
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- 235000010493 xanthan gum Nutrition 0.000 claims description 5
- 239000001294 propane Substances 0.000 claims description 4
- 235000021319 Palmitoleic acid Nutrition 0.000 claims description 3
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 claims description 3
- 235000020661 alpha-linolenic acid Nutrition 0.000 claims description 3
- SECPZKHBENQXJG-UHFFFAOYSA-N cis-palmitoleic acid Natural products CCCCCCC=CCCCCCCCC(O)=O SECPZKHBENQXJG-UHFFFAOYSA-N 0.000 claims description 3
- 229960004488 linolenic acid Drugs 0.000 claims description 3
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 claims description 3
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- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 6
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- 231100000956 nontoxicity Toxicity 0.000 abstract description 3
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- 235000019198 oils Nutrition 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
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- TWJNQYPJQDRXPH-UHFFFAOYSA-N 2-cyanobenzohydrazide Chemical compound NNC(=O)C1=CC=CC=C1C#N TWJNQYPJQDRXPH-UHFFFAOYSA-N 0.000 description 3
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
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- 239000010687 lubricating oil Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
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- 239000003208 petroleum Substances 0.000 description 2
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- 229940001941 soy protein Drugs 0.000 description 2
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- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- BUDQDWGNQVEFAC-UHFFFAOYSA-N Dihydropyran Chemical compound C1COC=CC1 BUDQDWGNQVEFAC-UHFFFAOYSA-N 0.000 description 1
- 101100314372 Onchocerca volvulus tmy-1 gene Proteins 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
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- 238000004140 cleaning Methods 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 101150041966 lev-11 gene Proteins 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- DGVVJWXRCWCCOD-UHFFFAOYSA-N naphthalene;hydrate Chemical compound O.C1=CC=CC2=CC=CC=C21 DGVVJWXRCWCCOD-UHFFFAOYSA-N 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
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- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
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- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
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- 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
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- B28B7/384—Treating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
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- 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
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- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- C10M2205/18—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras
- C10M2205/186—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras used as thickening agents
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- C10M2205/20—Natural rubber; Natural resins
- C10M2205/206—Natural rubber; Natural resins used as thickening agents
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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
- C10M2207/06—Peroxides; Ozonides
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- C—CHEMISTRY; METALLURGY
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2207/10—Carboxylix acids; Neutral salts thereof
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- 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
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
- C10M2209/0845—Acrylate; Methacrylate used as base material
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
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-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
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- 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
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- C10N2030/02—Pour-point; Viscosity index
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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
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- C10N2030/04—Detergent property or dispersant property
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- 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
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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
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
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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
- C10N2030/26—Waterproofing or water resistance
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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
- C10N2030/64—Environmental friendly compositions
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses a concrete release agent and a preparation method thereof, wherein the concrete release agent comprises epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, a surfactant, peroxide, a thickener and fatty acid, and the obtained concrete release agent has the advantages of quick molding, easy release, smooth surface and no residue; the waterproof antirust agent can be repeatedly used for a plurality of times, has the characteristics of low cost, no toxicity and smell, and strong storage stability, and can complement the limitation of the products in the concrete demoulding use scene compared with the existing various mould release agents on the market.
Description
Technical Field
The invention belongs to the technical field of concrete release agent modification, and particularly relates to a concrete release agent and a preparation method thereof.
Background
The concrete release agent is a substance or material used between concrete and a mold to prevent the concrete from adhering to the mold, and is difficult to detach so as to damage the mold or the concrete block itself.
The types of concrete release agents are classified into several types based on different purposes of use, and the following are exemplified:
1. pure oil: release agents can be formulated for various vegetable oils, animal oils and mineral oils, but most use mineral oils, i.e., various lubricating oils and machine oils produced in the petroleum industry. In order to reduce the cost, industrial waste oil is used in a plurality of units, but the waste oil has more impurities and is easier to pollute the surface of concrete. After the release agent is updated, the use surface of the pure oil type release agent gradually becomes smaller.
2. Emulsified oil: the emulsified oil is mostly prepared by petroleum lubricating oil, an emulsifier and a stabilizer, and an antirust additive, a preservative, essence and the like are added in some cases. The emulsified oil is used as a release agent, so that the release effect can be improved, and the cost is reduced; such mold release agents can be classified into a water-in-oil (W/O) type and an oil-in-water (O/W) type: the plastic mold is generally used for steel molds and aluminum molds, can also be used for plastic molds and wood molds, has small limitation on the types of materials of the molds, has the advantages of easy drying after brushing, film formation after drying, labor and material saving, and greatly reduces the cost of the release agent.
Such a concrete release agent in the comparative document CN105296122B, for example, includes: the oil substances, the oily emulsifier, the water-based emulsifier, the thickener, the stabilizer, the rust inhibitor, the defoamer and the water are blended in a proper proportion to obtain a concrete release agent with functional targets, and the concrete release agent generally has the advantages of improving the release effect and reducing the cost as described above, but the release agent component has the typical components of water-in-oil (W/O) type, namely the oil substances, the oily emulsifier and the oil-in-water (O/W) type, and has the components of oil-in-water (O/W) type, and although the technical advantages of using and producing the concrete release agent are stated and verified in the comparison document, whether the (W/O) type and the (O/W) type have good compatibility to be examined.
3. Resins: the release agent prepared from methyl silicone resin, unsaturated polyester resin, epoxy resin and solvent can be reused for many times, but has the defects of high price, certain toxicity, difficult cleaning and the like, and has small application scope in China.
4. Aqueous release agent: the aqueous release agent does not contain organic solvent components, has less pollution to the environment and meets the modern environmental protection requirements. The aqueous release agent can be directly cleaned by water, unlike the traditional solvent release agent which needs to be cleaned by special cleaning agents, the aqueous release agent is more convenient to use, but has high price and defective surface tension, and particularly can have the problems of incomplete release, die adhesion and the like in some high-precision and high-requirement die processing.
From the description of the prior several release agents, the emulsified oil type concrete release agent has obvious advantages over the other two major types of release agents, but the disadvantages of the concrete release agents are not ignored according to the actual use condition, as follows: if the release agent for standard layer construction is emulsified oil, the viscosity is high, the coating with a certain thickness is needed in construction, the coating is uneven with high probability, the rising of bubbles is affected, the discharge of bubbles on the surface of a concrete block is limited, and the bubbles on the surface of the concrete block are not feasible and the quality is not feasible.
Therefore, although the use of these concrete release agents can cover the basic requirements, the use of these agents still has the disadvantages that cannot be avoided in the respective application situations, and therefore, the art needs to adjust and improve these aspects so as to obtain better concrete release agents conveniently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a concrete release agent and a preparation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the concrete release agent comprises the following components in parts by weight:
by adopting the technical scheme, the concrete release agent obtained by mixing the components has the advantages of considerable film forming speed, smooth surface, perfect performance and reusability.
Preferably, the peroxide is an organic peroxide comprising: at least one of di-tert-butylbenzene peroxide, 2-dihydro-propane peroxide and 2, 5-dimethyl-2, 5-di-tert-butylperoxy hexane.
Preferably, the fatty acid is an unsaturated fatty acid, including one or more of linolenic acid, linoleic acid, myristoleic acid, palmitoleic acid.
By adopting the technical scheme, the organic peroxide plays a role of an initiator for the base resin part of the resin-based release agent, the resin is crosslinked and solidified on the basis of the performance of the resin, and fatty acid is enriched on the surface, so that the resin-based release agent can be used for stably forming the concrete release agent under the condition of small usage amount.
Preferably, the thickener is at least one of xanthan gum, lanolin and soybean protein gum.
By adopting the technical scheme, the thickener is preferably natural polymer, has no volatility, and the thickener is synergistic with other components, so that the thickener can increase the overall viscosity and simultaneously has certain traction force on the enriched fatty acid on the surface, so that the thickener cannot be lost in a large amount after the surface is contacted and stripped with concrete for many times, and the smoothness of the surface is kept and the reuse condition is met.
Preferably, the surfactant is polydimethylsiloxane or high-carbon fatty alcohol polyoxyethylene ether.
By adopting the technical scheme, the surfactant is mixed with other components, the obtained fluid is not formed into the concrete release agent before solidification, the formed concrete release agent has stable property, and the compatibility among the components is good, so that the concrete release agent is waterproof and rust-proof.
In order to achieve the technical effects, the invention also provides a preparation method applied to producing the concrete release agent, which comprises the following steps:
s1, preparing epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, a surfactant, peroxide, a thickener and fatty acid according to the proportion in claim 1;
s2, adding the epoxy acrylic resin into ethanol, and stirring and mixing the epoxy acrylic resin and the ethanol to obtain a premix;
s3, heating the premix and keeping the premix in a stirring state, adding polymethyl methacrylate, polyethylene glycol and peroxide, continuing to stir for the second time, and then adding a surfactant, a thickener and fatty acid to obtain a wet material;
and S4, drying and crushing the wet material obtained in the step S3 to obtain a finished product.
By adopting the technical scheme, the prepared finished product is powder in the final state, the storage is convenient and fast compared with the traditional water sample concrete release agent, the transportation is convenient, the powder concrete release agent can be directly used by adding the ethanol-containing water sample, and under the premise, the obtained finished product of the concrete release agent is tolerant to the storage condition.
Preferably, the heating temperature in the step S3 is 25 to 35 ℃.
Preferably, the stirring speed of the stirring and mixing in the step S2 is 200-400 rpm.
Preferably, the stirring speed of the secondary stirring in the step S3 is 600 to 800rpm.
Preferably, the ethanol in the step S1 is added in a proportion of M Epoxy acrylic resin 12 to 25 percent of (3).
By adopting the technical scheme, the control of the technological parameters of the preparation method is favorable for the stability of the properties of the obtained concrete release agent in all aspects, the production operation process is simple, and various variable parameters are easy to control.
The invention has the beneficial effects that:
(1) Overcomes the defects that the existing resin-based concrete release agent is not environment-friendly, is easy to volatilize and toxic, and does not use a large amount of organic solvents, especially benzene or ketone; the resin concrete release agent has proper tension and viscosity, eliminates the problem of uneven smearing and smearing for multiple times in the prior art, effectively reduces the use amount, increases the use times and eliminates the defect of high use cost in the prior art.
(2) The polymer monomer disclosed by the invention relates to a benzene-containing compound, but under the combined crosslinking effect, the components can be quickly prepared into a usable state by adding ethanol-containing water even though free benzene does not exist at high temperature, so that the polymer monomer is simple and convenient to use;
(3) The prepared concrete release agent has moderate viscosity, the surface tension can meet the use conditions of various mold templates, such as wood mold, steel mold, aluminum mold, rubber mold and bamboo mold, the thickness is moderate, the molding speed is high under the condition of moderate thickness, the mold plates are attached, the air in the concrete is easy to be discharged, and the stripping is simple and does not remain.
(4) The finished powder is easy to store and transport, and even if the finished powder is wetted, the subsequent use condition of the finished product is not affected, and the finished powder has stable properties and is very tolerant to storage environment.
In summary, the concrete release agent disclosed by the invention has the following advantages: the molding is fast, the demolding is easy, the surface is smooth and clean, and no residue exists; waterproof and antirust, repeated use, low cost, no toxicity, no smell and high storage stability.
The specific embodiment is as follows:
the invention is further described by the following specific examples, which are not intended to limit the scope of the invention.
Example 1:
the following components are prepared according to parts by mass:
the preparation method comprises the following steps:
s1, preparing epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, polydimethylsiloxane, di-tert-butylbenzene peroxide, lanolin and myristoleic acid according to the proportion;
s2, adding ethanol into the epoxy acrylic resin, wherein the adding proportion of the ethanol is M Epoxy acrylic resin Stirring and mixing 20% of the mixture to obtain a premix;
s3, heating the premix to 30 ℃, keeping a stirring state at a speed of 300rpm, adding polymethyl methacrylate, polyethylene glycol and di-tert-butylbenzene peroxide, continuously stirring for the second time, controlling the speed to be 700rpm, and then adding polydimethylsiloxane, lanolin and myristic acid to obtain a wet material;
and S4, drying and crushing the wet material obtained in the step S3 to obtain a finished product.
Example 2:
the following components are prepared according to parts by mass:
the preparation method comprises the following steps:
s1, preparing epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, high-carbon fatty alcohol polyoxyethylene ether, 2-dihydro propane peroxide, soy protein glue and linoleic acid according to the proportion;
s2, adding ethanol into the epoxy acrylic resin, wherein the adding proportion of the ethanol is M Epoxy acrylic resin Firstly stirring and mixing 25% of the mixture to obtain a premix;
s3, heating the premix to 35 ℃, keeping a stirring state at a speed of 200rpm, adding polymethyl methacrylate, polyethylene glycol and di-tert-butylbenzene peroxide, continuously stirring for the second time, controlling the speed to be 800rpm, and then adding polydimethylsiloxane, lanolin and myristic acid to obtain a wet material;
and S4, drying and crushing the wet material obtained in the step S3 to obtain a finished product.
Example 3:
the following components are prepared according to parts by mass:
the preparation method comprises the following steps:
s1, preparing epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, polydimethylsiloxane, 2-peroxide dihydropyran, xanthan gum and palmitoleic acid according to the proportion;
s2, adding ethanol into the epoxy acrylic resin, wherein the adding proportion of the ethanol is M Epoxy acrylic resin Firstly stirring and mixing 15% of the mixture to obtain a premix;
s3, heating the premix to 25 ℃, keeping a stirring state at a speed of 300rpm, adding polymethyl methacrylate, polyethylene glycol and di-tert-butylbenzene peroxide, continuously stirring for the second time, controlling the speed to be 800rpm, and then adding polydimethylsiloxane, lanolin and myristic acid to obtain a wet material;
and S4, drying and crushing the wet material obtained in the step S3 to obtain a finished product.
Example 4:
the following components are prepared according to parts by mass:
the preparation method comprises the following steps:
s1, preparing epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, high-carbon fatty alcohol polyoxyethylene ether, 2-dihydro propane peroxide, soy protein glue and linoleic acid according to the proportion;
s2, adding ethanol into the epoxy acrylic resin, wherein the adding proportion of the ethanol is M Epoxy acrylic resin Stirring and mixing 12% of the mixture to obtain a premix;
s3, heating the premix to 35 ℃, keeping a stirring state at a speed of 400rpm, adding polymethyl methacrylate, polyethylene glycol and di-tert-butylbenzene peroxide, continuously stirring for the second time, controlling the speed to be 600rpm, and then adding high-carbon fatty alcohol polyoxyethylene ether, soybean protein glue and linolenic acid to obtain a wet material;
and S4, drying and crushing the wet material obtained in the step S3 to obtain a finished product.
Example 5:
the following components are prepared according to parts by mass:
the preparation method comprises the following steps:
s1, preparing epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, high-carbon fatty alcohol polyoxyethylene ether, 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane, xanthan gum and myristoleic acid according to the proportion;
s2, adding ethanol into the epoxy acrylic resin, wherein the adding proportion of the ethanol is M Epoxy acrylic resin 24% of (1)Mixing to obtain a premix;
s3, heating the premix to 35 ℃, keeping a stirring state at a speed of 200rpm, adding polymethyl methacrylate, polyethylene glycol and 2, 5-dimethyl-2, 5-di-tert-butyl peroxy hexane, continuously stirring for the second time, controlling the speed to be 800rpm, and then adding high-carbon fatty alcohol polyoxyethylene ether, xanthan gum and myristoleic acid to obtain a wet material;
and S4, drying and crushing the wet material obtained in the step S3 to obtain a finished product.
Comparative example 1:
commercially available, aqueous concrete mold release agent (ZYT-5).
Comparative example 2:
commercially available, oily concrete mold release agent (TMY-1).
Comparative example 3:
commercially available, emulsified oil concrete release agent (SZ-TM).
Comparative example 4:
a resin-based concrete mold release agent (MK-SC-04) is commercially available.
Comparative example 5:
all components were: adding epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, a surfactant, peroxide, a thickener and fatty acid into ethanol, mixing, stirring, heating, and stirring for a period of time to obtain the finished product of the concrete release agent.
The performance test of examples 1 to 5 was compared with that of comparative examples 1 to 5.
(1) Performance test materials
And (3) cement: p.o42.5 cement; machine-made sand: the fineness modulus is 2.85, and a small amount of mica is contained; lime; stone: 5-35mm crushed stone; high-efficiency water-reducing type high-dispersibility naphthalene water reducer (DC-1058) is commercially available.
The components are used for preparing C30 concrete according to the standard of GB/T50080-2016 common concrete mixture performance test method standard, and the mixing ratio of the C30 concrete is shown in the following table.
| Cement and its preparation method | Machine-made sand | Lime | Middle sand | Stone | Water reducing agent | Water and its preparation method |
| 240 | 60 | 60 | 910 | 990 | 10.8 | 166 |
(2) Instrument for measuring and controlling the intensity of light
JB120-SH digital display mixer; JEA1002 electronic balance; mixer for HJW60 type concrete test and ZT-1X 1 type small-sized concrete vibrating table; concrete compression-resistant standard test mould: the specification is 150mm×150mm.
(3) Performance test method
A. The method for detecting the appearance bubbles of the concrete comprises the following steps:
and (3) pouring the prepared C30 concrete into standard test molds sprayed with various concrete release agents of examples and comparative examples in equal quantity, placing the test molds in a vibrating table to vibrate for a specified time to stop, scraping off cement paste exceeding the test molds, trowelling the surface of the test molds, curing for 24 hours at normal temperature, demolding, counting the number of bubbles with appearance bubble diameters larger than 2mm except the upper surface and the bottom surface of the test blocks after demolding, and indicating that the influence of the release agent on the appearance bubble performance of the concrete is larger as the number of bubbles is larger.
B. Testing the use condition of the mold matched with various materials, and observing residues, surface smoothness and stripping difficulty. C. The stability at high rotational speeds, drying time at room temperature, smell after heating, and extremely thin release thickness that would be damaged by at least two successive peels in use of several concrete release agents of the comparative examples and comparative examples.
As can be seen from the data in the tables, the various concrete release agents of examples 1 to 5 have various properties
The advantages which are satisfied in the process are that compared with the other concrete release agents which are commonly used in the market in reference comparative examples 1 to 4, the requirements on mechanical properties can be satisfied, the requirements on environmental protection and low cost can be satisfied, in the concrete release agent, the residual quantity is small, the internal exhaust of the concrete is not influenced, the concrete blocks with more stable quality and better quality are obtained, the drying time is short, the shortening of the construction process is facilitated, the release is smooth, the stable forming thickness can be realized, and the condition of multiple use is satisfied.
D. And the adaptation degree of the template with various materials is selected and used as a wider template.
In conclusion, the invention provides a plastic material which is quick in molding, easy to demold, smooth in surface and free of residues; waterproof and antirust, repeated use, low cost, no toxicity, no smell and high storage stability.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Claims (5)
1. The concrete release agent is characterized by mainly comprising the following components in parts by weight:
6-30 parts of epoxy acrylic resin
12-15 parts of polymethyl methacrylate
80-85 parts of polyethylene glycol
0.5-2 parts of surfactant
3-5 parts of peroxide
0.1-0.3 part of thickener
20-35 parts of fatty acid;
the fatty acid is one or more of linolenic acid, linoleic acid, myristoleic acid and palmitoleic acid;
the preparation method of the concrete release agent comprises the following steps:
s1, preparing epoxy acrylic resin, polymethyl methacrylate, polyethylene glycol, a surfactant, peroxide, a thickener and fatty acid according to a proportion;
s2, adding epoxy acrylic resin into ethanol, and uniformly stirring and mixing to obtain a premix;
s3, heating the premix and keeping the premix in a stirring state, adding polymethyl methacrylate, polyethylene glycol and peroxide, continuing to stir for the second time, and then adding a surfactant, a thickener and fatty acid to obtain a wet material finished product;
s4, drying and crushing the wet material finished product obtained in the step S3 to obtain a finished product;
the addition ratio of the ethanol in the step S1 is M Epoxy acrylic resin 12-25%;
the heating temperature in the step S3 is 25-35 ℃;
the peroxide is at least one of di-tert-butylbenzene peroxide, 2-dihydro-propane peroxide and 2, 5-dimethyl-2, 5-di-tert-butylperoxy hexane.
2. The concrete mold release agent according to claim 1, wherein the thickener is at least one of xanthan gum, lanolin, and soybean protein gum.
3. The concrete release agent according to claim 1, wherein the surfactant is polydimethylsiloxane or higher fatty alcohol polyoxyethylene ether.
4. The concrete release agent according to claim 1, wherein the stirring speed of the stirring and mixing in step S2 is 200 to 400rpm.
5. The concrete release agent according to claim 1, wherein the stirring speed of the secondary stirring in step S3 is 600 to 800rpm.
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- 2023-09-01 CN CN202311122497.XA patent/CN117384692B/en active Active
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| US4049874A (en) * | 1973-08-01 | 1977-09-20 | Fujikura Kasei Co., Ltd. | Process for producing an architectural precast concrete panel |
| CN106273102A (en) * | 2016-08-30 | 2017-01-04 | 山东圣泉新材料股份有限公司 | A kind of releasing agent, resin combination, section bar and its preparation method and application |
| CN115340646A (en) * | 2022-04-01 | 2022-11-15 | 江门市恒之光环保新材料有限公司 | High-brightness epoxy acrylate for curtain coating and preparation method thereof |
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