CN111410556B - High-performance concrete surface protective agent and preparation method thereof - Google Patents
High-performance concrete surface protective agent and preparation method thereof Download PDFInfo
- Publication number
- CN111410556B CN111410556B CN202010133951.1A CN202010133951A CN111410556B CN 111410556 B CN111410556 B CN 111410556B CN 202010133951 A CN202010133951 A CN 202010133951A CN 111410556 B CN111410556 B CN 111410556B
- Authority
- CN
- China
- Prior art keywords
- performance concrete
- protective agent
- parts
- concrete surface
- solvent
- 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.)
- Active
Links
- 239000004574 high-performance concrete Substances 0.000 title claims abstract description 69
- 239000003223 protective agent Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 229920002545 silicone oil Polymers 0.000 claims abstract description 55
- 239000002904 solvent Substances 0.000 claims abstract description 55
- -1 alkyl triethoxy silane Chemical compound 0.000 claims abstract description 31
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- 239000004094 surface-active agent Substances 0.000 claims abstract description 17
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011591 potassium Substances 0.000 claims abstract description 14
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 14
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 19
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 18
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 239000003755 preservative agent Substances 0.000 claims description 10
- 230000002335 preservative effect Effects 0.000 claims description 10
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 239000007822 coupling agent Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000000047 product Substances 0.000 claims description 8
- HXOGQBSDPSMHJK-UHFFFAOYSA-N triethoxy(6-methylheptyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCCCC(C)C HXOGQBSDPSMHJK-UHFFFAOYSA-N 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 239000004480 active ingredient Substances 0.000 claims description 5
- 239000013067 intermediate product Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 claims description 3
- 239000004567 concrete Substances 0.000 abstract description 23
- 239000011148 porous material Substances 0.000 abstract description 10
- 230000001681 protective effect Effects 0.000 abstract description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract description 6
- 239000003513 alkali Substances 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 239000006087 Silane Coupling Agent Substances 0.000 abstract description 4
- 239000002253 acid Substances 0.000 abstract description 3
- 230000005661 hydrophobic surface Effects 0.000 abstract description 3
- 239000003795 chemical substances by application Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 29
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 7
- 230000035515 penetration Effects 0.000 description 7
- 229910000077 silane Inorganic materials 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XGJSDYRPTUQQHR-UHFFFAOYSA-N 3-(2-aminoethylsilyl)propan-1-amine Chemical compound NCCC[SiH2]CCN XGJSDYRPTUQQHR-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- MQKXWEJVDDRQKK-UHFFFAOYSA-N bis(6-methylheptyl) butanedioate Chemical group CC(C)CCCCCOC(=O)CCC(=O)OCCCCCC(C)C MQKXWEJVDDRQKK-UHFFFAOYSA-N 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical group CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- BTQZKEHJTOBVEP-UHFFFAOYSA-N aminomethylsilicon Chemical compound NC[Si] BTQZKEHJTOBVEP-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 150000007530 organic bases Chemical class 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- VJWGHGJYLCJIEK-UHFFFAOYSA-N 1,4-bis(6-methylheptoxy)-1,4-dioxobutane-2-sulfonic acid Chemical compound CC(C)CCCCCOC(=O)CC(S(O)(=O)=O)C(=O)OCCCCCC(C)C VJWGHGJYLCJIEK-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- AFGVJNUKZYQQOO-UHFFFAOYSA-N 3-[2-aminoethyl(methyl)silyl]propan-1-amine Chemical compound NCC[SiH](C)CCCN AFGVJNUKZYQQOO-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- 239000012445 acidic reagent Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920003216 poly(methylphenylsiloxane) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910021487 silica fume Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 description 1
- ZBTUYCUNQBRXOR-UHFFFAOYSA-L sodium succinate hexahydrate Chemical compound O.O.O.O.O.O.[Na+].[Na+].[O-]C(=O)CCC([O-])=O ZBTUYCUNQBRXOR-UHFFFAOYSA-L 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/62—Coating or impregnation with organic materials
- C04B41/64—Compounds having one or more carbon-to-metal of carbon-to-silicon linkages
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
- C04B41/49—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes
- C04B41/4905—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon
- C04B41/495—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Organo-clay compounds; Organo-silicates, i.e. ortho- or polysilicic acid esters ; Organo-phosphorus compounds; Organo-inorganic complexes containing silicon applied to the substrate as oligomers or polymers
- C04B41/4961—Polyorganosiloxanes, i.e. polymers with a Si-O-Si-O-chain; "silicones"
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
The invention discloses a high-performance concrete surface protective agent, which comprises effective components and a solvent; wherein, the effective components are mainly prepared from micromolecular silicone oil, amino silane coupling agent, potassium catalyst, alkyl triethoxy silane and terminating agent; the solvent mainly comprises ethyl orthosilicate, solvent oil and surfactant. Correspondingly, the invention also discloses a preparation method of the high-performance concrete surface protective agent. The high-performance concrete surface protective agent disclosed by the invention can be firmly adhered to the surface and the capillary channels of concrete, so that the hydrophilic concrete surface and capillary pores are changed into hydrophobic surfaces, thus the corrosion of corrosive media such as chloride ions, strong acid, strong alkali and the like is reduced, and a good protective effect is formed on the high-performance concrete.
Description
Technical Field
The invention relates to the technical field of high-performance concrete surface protection, in particular to a high-performance concrete surface protective agent and a preparation method thereof.
Background
The high-performance concrete is a novel cement-based composite material with high strength, low brittleness and high durability. The cement mortar mainly comprises fine sand, cement, quartz powder, silica fume, a high-efficiency water reducing agent and the like. Meanwhile, a small amount of micro steel fibers are often blended for improving the performance. The particle size of the raw materials adopted by the high-performance concrete is much smaller than that of the common concrete, and is generally controlled below 1mm, so that the pores of the high-performance concrete are relatively small. Due to its excellent properties, high performance concrete is gradually used in the fields of building construction and infrastructure construction (such as bridges, roads, tunnels) in a wide range. However, since concrete is easily deteriorated by physical, chemical and biological actions of the surrounding environment, and the life of a building structure is shortened, a surface protective agent is often used to protect the surface of high-performance concrete in the prior art.
At present, the concrete protection mainly adopts a surface coating method, for example, asphalt, polyurethane, epoxy resin, acrylic acid, ethylene rubber or greening rubber and other coatings are covered on the concrete surface, and the coatings have strong alkali resistance and strong adhesive force, but can completely seal the gaps on the concrete surface, organize the volatilization of water in the concrete, and are difficult to achieve the optimal protection effect. The novel protective agent such as silane protective agent mainly represents alkyl triethoxysilane, and can permeate into the concrete, thereby effectively reducing the water absorption of the capillary pores of the concrete and playing a role in protection. However, the penetration depth of the protective agent is shallow, the chloride absorption capacity is low, and the protective performance is poor.
The other novel protective agent is a silane protective paste, such as the silane protective paste developed in Chinese patent CN101115696, the viscosity of the silane protective paste is less than or equal to 100mPa · s, the silane protective paste can be used for hydrophobic treatment of concrete, the coating amount of the silane paste can reach more than 1mm, and the silane protective paste can stay on the surface of the concrete for a long time, so that the concrete can fully react and permeate with the protective agent, but the protective agent has high cost and slow reaction speed, and is difficult to be applied in some occasions.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a high-performance concrete surface protective agent which can be effectively combined with high-performance concrete, has good defense capability against corrosive substances and microorganisms, and can be quickly constructed.
In order to solve the technical problems, the invention provides a high-performance concrete surface protective agent which is characterized by comprising effective components and a solvent in a weight ratio of 1: 1-3, wherein the effective components are mainly prepared from the following raw materials in parts by weight:
the solvent is prepared from the following raw materials in parts by weight:
5-15 parts of ethyl orthosilicate;
75-85 parts of solvent oil;
2-10 parts of a surfactant.
As an improvement of the technical scheme, the micromolecular silicone oil is one or more of methyl silicone oil, ethyl silicone oil, phenyl silicone oil, hydrogen-containing silicone oil, hydroxyl silicone oil, methyl ethoxy silicone oil, methyl phenyl silicone oil and methyl trifluoro propyl silicone oil;
the alkyl triethoxysilane is isobutyl triethoxysilane and/or isooctyl triethoxysilane.
As an improvement of the technical scheme, the micromolecular silicone oil is selected from hydrogen-containing silicone oil and/or hydroxyl silicone oil;
the alkyl triethoxysilane is isooctyl triethoxysilane.
As an improvement of the technical scheme, the solvent is D40 solvent oil, D60 solvent oil or D80 solvent oil;
the surfactant is selected from diisooctyl succinate sodium sulfonate and/or diiso-alkyl succinate sodium sulfonate.
As an improvement of the technical scheme, the solvent oil is D40 solvent oil;
the weight ratio of the ethyl orthosilicate to the solvent oil is as follows: 1: (6-10).
As an improvement of the above technical solution, the active ingredients further include:
1-5 parts of a preservative.
As an improvement of the technical scheme, the preservative is selected from calcium nitrite, 1-butyl-3-methylimidazolium tetrafluoroborate or ethanolamine.
As an improvement of the technical scheme, the preservative is ethanolamine.
As an improvement of the technical scheme, the potassium catalyst is prepared by stirring and heating potassium hydroxide and hydrogen-containing silicone oil at 110-125 ℃ for 30min, and the potassium catalyst contains 0.1-1% of potassium hydroxide.
Correspondingly, the invention also discloses a preparation method of the high-performance concrete surface protective agent, which comprises the following steps:
(1) putting 85-94 parts of micromolecular silicone oil, 2-10 parts of amino silane coupling agent and 0.1-0.5 part of potassium catalyst into a reaction kettle, and heating and stirring at 90-110 ℃ for 4-8 hours to obtain an intermediate product;
(2) cooling to 80-90 ℃, adding 3-12 parts of alkyl triethoxysilane into the reaction kettle, stirring for reaction for 1-2.5 hours, and adding 0.1-0.5 part of terminator for neutralization to obtain the effective components of the high-performance concrete protective agent;
(3) and cooling the effective components to room temperature, adding tetraethoxysilane, a surfactant and solvent oil, and uniformly mixing to obtain a finished product of the high-performance concrete surface protective agent.
The implementation of the invention has the following beneficial effects:
1. according to the invention, micromolecular silicone oil and alkyl triethoxysilane are used as active components, wherein the micromolecular silicone oil has excellent penetration effect and can quickly penetrate into micro gaps of high-performance concrete; the alkyl triethoxysilane and the micromolecule silicone oil can be condensed to form reticular organic silicon resin under the action of the catalyst, and the reticular organic silicon resin is firmly adhered to the surface and capillary channels of the concrete, so that the hydrophilic surface and capillary pores of the concrete are changed into hydrophobic surfaces, and the corrosion of corrosive media such as chloride ions, strong acid, strong alkali and the like is reduced; meanwhile, the surface protective agent in the invention can not block the tiny pores of the high-performance concrete, can not prevent the water in the concrete from volatilizing, and ensures the air permeability of the high-performance concrete.
2. The solvent in the invention comprises tetraethoxysilane and solvent oil; wherein, the tetraethoxysilane can be hydrolyzed in situ to form silica sol with higher viscosity; the viscosity of the miscella is relatively low; the two are combined, so that the penetration of the surface protective agent to high-performance concrete in the early stage can be promoted, and the surface protective agent can be effectively prevented from falling off in the later stage. At the same time, the silica sol can be mixed with Ca (OH) produced by hydration2And the reaction reduces concrete carbonization.
3. The protective agent also contains a preservative, which can effectively prevent the corrosion of steel fibers in the high-performance concrete and further influence the performance of the high-performance concrete.
Drawings
FIG. 1 is a flow chart of a method for preparing a high-performance concrete surface protective agent according to the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
The invention provides a high-performance concrete surface protective agent which comprises effective components and a solvent in a weight ratio of 1: 1-3.
The active ingredients are mainly prepared from the following raw materials in parts by weight:
the solvent is prepared from the following raw materials in parts by weight:
5-15 parts of ethyl orthosilicate;
75-85 parts of solvent oil;
2-10 parts of a surfactant.
Wherein, the micromolecular silicone oil can be one or more of alkyl silicone oil, hydrogen-containing silicone oil, hydroxyl silicone oil, alkyl ethoxy silicone oil and alkyl vinyl silicone oil, but is not limited to the above; specifically, the alkyl silicone oil includes methyl silicone oil, ethyl silicone oil, but is not limited thereto; the hydrogen-containing silicone oil includes methyl hydrogen-containing silicone oil, ethyl hydrogen-containing silicone oil or hydroxy silicone oil, but is not limited thereto; the hydroxyl silicone oil includes methyl hydroxyl silicone oil or ethyl hydroxyl silicone oil, but is not limited thereto; the alkyl ethoxy silicone oil includes, but is not limited to, methyl ethoxy silicone oil; the alkyl vinyl silicone oil includes, but is not limited to, methyl vinyl silicone oil.
Preferably, the hydrogen-containing silicone oil is selected, has strong reaction activity, can be self-condensed under the catalysis of a potassium catalyst and alkali in concrete or is condensed with alkyl triethoxy to form a three-dimensional network structure, and enhances the corrosion resistance and durability of high-performance concrete. Further preferably, methyl hydrogen silicone oil is selected.
The alkyl triethoxysilane is isobutyl triethoxysilane and/or isooctyl triethoxysilane; the alkyl triethoxysilane has good hydrophobic and waterproof properties, and when applied to the surface of high performance concrete, the alkoxy groups are hydrolyzed and condensed to form a network film, thereby providing protection. Preferably, isooctyltriethoxysilane is selected, which has better stability, low volatility and higher content of the effective substances after condensation.
It should be noted that in the prior art, isooctyltriethoxysilane is generally applied in the form of a paste, which increases or prolongs the residence time on the concrete surface, thereby allowing the penetration of the protective agent to be deeper and more complete. However, the penetration depth of the paste is shallow in a short time, and particularly, the penetration depth is shallow on the surface of high-performance concrete with small pores. Therefore, the micromolecular silicone oil is introduced into the formula, so that the penetration speed of the protective agent can be increased, the protective agent can be penetrated into high-performance concrete micro pores in a short time, and the protective effect is achieved.
Wherein, the aminosilane coupling agent is one or a combination of aminosilane, aminomethyl silane, aminoethyl aminopropyl silane and aminoethyl aminopropyl methyl silane; the amino silane coupling agent can react with micromolecular silicone oil to form an amino-blocked organic silicon molecular chain, and the adhesive force of the surface protective agent to the surface of high-performance concrete is enhanced.
Wherein the potassium catalyst is prepared by stirring and heating potassium hydroxide and hydrogen-containing silicone oil at the temperature of 110-125 ℃ for 30min, and the potassium catalyst contains 0.1-1% of potassium hydroxide.
Wherein the terminating agent is an acidic reagent capable of reacting with the organic base catalyst to remove the remaining organic base catalyst, thereby terminating the reaction for producing the active ingredient. The terminator can be one or more of hydrochloric acid, sulfuric acid, acetic acid or oxalic acid.
In the solvent formula of the invention, the solvent oil can be D40 solvent oil, D60 solvent oil or D80 solvent oil; preferably, D40 mineral spirit is used. The D40 solvent oil has strong dissolving power and good stability, and does not release toxic gas. And the viscosity of the D40 solvent oil is low, so that the overall viscosity of the surface protective agent is low, and the surface protective agent can quickly permeate into the interior of the base material along the tiny pores of the base material after being applied to the surface of the high-performance concrete base material to form a protective effect.
On the other hand, the solvent formula of the invention also contains ethyl orthosilicate which can generate in-situ hydrolysis reaction after being applied to the surface of concrete to form silica sol, and the silica sol has higher viscosity and can effectively prevent the surface protective agent from dropping due to the action of gravity in the later stage of reaction. When the weight part of the tetraethoxysilane is more than 15 parts, the viscosity at the later period is too high, so that the surface protective agent is not favorably permeated into high-performance concrete. When the weight part of the tetraethoxysilane is less than 5 parts, the surface protective agent is easy to drip.
Meanwhile, the ethyl silicate can be hydrated with high-performance concrete to form Ca (OH)2Reacting to generate a gel material, and compacting the high-performance concrete; and also prevents carbonization of the high performance concrete.
Further, in order to ensure the permeability of the surface protective agent, the weight ratio of the tetraethoxysilane to the solvent oil is controlled as follows: 1: (6-10); preferably, the ratio of ethyl orthosilicate: 1, (6-8). Through the coordination effect of the solvent, the viscosity of the surface protective agent is 5-20 mPa · s, the surface protective agent has excellent adhesion to the surface of a high-performance concrete matrix, and the protective effect can be achieved only by brushing once. Specifically, the surface protective agent can be applied to the surface of the high-performance concrete by means of coating such as rolling, brushing, spraying or soaking.
Wherein the surfactant is anionic surfactant, specifically, succinic acid sodium salt; more specifically, diisooctyl sulfosuccinate and/or diisoalkyl sulfosuccinate may be used, but not limited thereto.
Further, the surface protective agent also comprises the following components:
1-5 parts of a preservative.
The preservative can effectively prevent corrosion of micro steel fibers in the high-performance concrete matrix, and further influences the performance of the high-performance concrete. Specifically, the preservative can be selected from calcium nitrite, 1-butyl-3-methylimidazolium tetrafluoroborate or ethanolamine; preferably, ethanolamine is selected. The ethanolamine has little influence on the performance of the surface protective agent and can not react with other components.
Correspondingly, referring to fig. 1, the invention also discloses a preparation method of the high-performance concrete surface protective agent, which comprises the following steps:
s1: putting 85-94 parts of micromolecular silicone oil, 2-10 parts of amino silane coupling agent and 0.1-0.5 part of potassium catalyst into a reaction kettle, and heating and stirring at 90-110 ℃ for 4-8 hours to obtain an intermediate product;
specifically, the micromolecular silicone oil reacts with the aminosilane coupling agent under the catalysis of a potassium catalyst to form an amino-block organic silicon molecular chain, so that the adhesive force of the surface protective agent to the surface of the high-performance concrete is enhanced.
S2: cooling to 80-90 ℃, adding 3-12 parts of alkyl triethoxysilane into the reaction kettle, stirring for reaction for 1-2.5 hours, and adding 0.1-0.5 part of terminator for neutralization to obtain the effective components of the high-performance concrete protective agent;
after the alkyl triethoxysilane is added, the alkyl triethoxysilane can further react with small molecular silicone oil and an aminosilane coupling agent to form a reticular organic silicon resin. After coating, the organic silicon resin can be firmly adhered to the surface and capillary channels of concrete, so that the hydrophilic concrete surface and capillary pores are changed into a hydrophobic surface, and the corrosion of chloride ions is reduced; meanwhile, the surface protective agent in the invention can not block the tiny pores of the high-performance concrete, can not prevent the water in the concrete from volatilizing, and ensures the air permeability of the high-performance concrete.
S3: and cooling the effective components to room temperature, adding tetraethoxysilane, a surfactant and solvent oil, and uniformly mixing to obtain a finished product of the high-performance concrete surface protective agent.
The invention is further illustrated by the following specific examples.
Example 1
The embodiment provides a high-performance concrete surface protective agent; the solvent-free emulsion comprises effective components and a solvent, wherein the effective components are as follows: 1:2 of a solvent;
the formula of the effective components is as follows:
wherein, the micromolecular silicone oil is ethyl silicone oil, the aminosilane coupling agent is aminomethyl silane, and the alkyl triethoxysilane is isobutyl triethoxysilane;
the formula of the solvent is as follows:
15 parts of ethyl orthosilicate;
82 parts of solvent oil;
and 3 parts of a surfactant.
Wherein the solvent oil is D60 solvent oil, and the surfactant is diisooctyl succinate sodium sulfonate.
The preparation method of the high-performance concrete surface protective agent comprises the following steps:
(1) putting the micromolecular silicone oil, the aminosilane coupling agent and the potassium catalyst into a reaction kettle, and heating and stirring for 8 hours at 90 ℃ to obtain an intermediate product;
(2) cooling to 80 ℃, adding alkyl triethoxysilane into the reaction kettle, stirring for reaction for 2.5 hours, and adding a terminator for neutralization to obtain the effective components of the high-performance concrete protectant;
(3) cooling the effective components to room temperature, adding tetraethoxysilane, surfactant and solvent oil, and uniformly mixing to obtain the finished product of the high-performance concrete surface protective agent.
Example 2
The embodiment provides a high-performance concrete surface protective agent; the solvent-free emulsion comprises effective components and a solvent, wherein the effective components are as follows: 1:1 of a solvent;
the formula of the effective components is as follows:
wherein, the micromolecular silicone oil is ethyl hydrogen-containing silicone oil, the aminosilane coupling agent is aminoethyl aminopropyl silane, and the alkyl triethoxysilane is isooctyl triethoxysilane;
the formula of the solvent is as follows:
11 parts of tetraethoxysilane;
83 parts of solvent oil;
6 parts of a surfactant.
Wherein the solvent oil is D40 solvent oil, and the surfactant is diisooctyl succinate sodium sulfonate.
The preparation method of the high-performance concrete surface protective agent comprises the following steps:
(1) putting the micromolecular silicone oil, the aminosilane coupling agent and the potassium catalyst into a reaction kettle, and heating and stirring for 6 hours at the temperature of 100 ℃ to obtain an intermediate product;
(2) cooling to 85 ℃, adding alkyl triethoxysilane into the reaction kettle, stirring for reaction for 1.5 hours, and adding a terminator for neutralization to obtain the effective components of the high-performance concrete protectant;
(3) cooling the effective components to room temperature, adding tetraethoxysilane, surfactant and solvent oil, and uniformly mixing to obtain the finished product of the high-performance concrete surface protective agent.
Example 3
The embodiment provides a high-performance concrete surface protective agent; the solvent-free emulsion comprises effective components and a solvent, wherein the effective components are as follows: 1:1 of a solvent;
the formula of the effective components is as follows:
wherein, the micromolecular silicone oil is methyl hydrogen-containing silicone oil, the aminosilane coupling agent is aminoethyl aminopropyl silane, and the alkyl triethoxysilane is isooctyl triethoxysilane;
the formula of the solvent is as follows:
12 parts of tetraethoxysilane;
84 parts of solvent oil;
and 4 parts of a surfactant.
Wherein the solvent oil is D40 solvent oil, and the surfactant is sodium alkyl disuccinate.
The preparation method of the high-performance concrete surface protective agent is the same as that of the example 2.
Example 4
The embodiment provides a high-performance concrete surface protective agent; the formulation and preparation method are the same as those in example 3. The difference lies in that the micromolecular silicone oil is methyl hydroxyl silicone oil.
Comparative example 1
An organic silicon product produced by American Fei blue International group is selected, the model number of the organic silicon product is H-3001C, and the organic silicon product is white paste.
Example 5 Performance test method
C40 high-performance concrete test pieces are manufactured according to the national standard, the specification is 12cm multiplied by 12cm, and after 28 days of maintenance, the test pieces are washed clean and dried.
Respectively brushing the surface protective agents in the examples 1-4 and the comparative example 1, and constructing on a horizontal plane; the dosage is 400mL/m2。
After coating, maintaining for 3 days at 20-25 ℃ and under the environment with the relative humidity of 60-90%, taking out, and measuring the water absorption, the impregnation depth and the chloride absorption of the coating according to the method of JTJ 275-2019;
the test piece taken out was immersed in a 10% NaOH solution for 28 days, and the condition of the test piece was observed to determine alkali resistance.
The results of the measurements are given in the following table:
the table shows that the high-performance concrete surface protective agent can effectively reduce the water absorption of the high-performance concrete matrix, effectively absorb chloride, and has very good strong acid and strong alkali resistance.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The high-performance concrete surface protective agent is characterized by comprising effective components and a solvent in a weight ratio of 1: 1-3, wherein the effective components are mainly prepared from the following raw materials in parts by weight:
the solvent is prepared from the following raw materials in parts by weight:
5-15 parts of ethyl orthosilicate;
75-85 parts of D40 solvent oil;
2-10 parts of a surfactant;
wherein the weight ratio of the tetraethoxysilane to the D40 solvent oil is as follows: 1: (6-10).
2. The high performance concrete surface protectant according to claim 1, wherein the active ingredients further comprise:
1-5 parts of a preservative.
3. The high performance concrete surface protectant of claim 2, wherein said preservative is selected from the group consisting of calcium nitrite, 1-butyl-3-methylimidazolium tetrafluoroborate, and ethanolamine.
4. The high performance concrete surface protectant according to claim 2 or claim 3, wherein said preservative is ethanolamine.
5. The high performance concrete surface protectant according to claim 1, wherein the potassium catalyst is prepared by stirring and heating potassium hydroxide and hydrogen-containing silicone oil at 110-125 ℃ for 30min, and the potassium catalyst contains 0.1-1% of potassium hydroxide.
6. A method for preparing the high performance concrete surface protective agent according to any one of claims 1 to 5, comprising:
(1) putting 85-94 parts of hydrogen-containing silicone oil, 2-10 parts of aminosilane coupling agent and 0.1-0.5 part of potassium catalyst into a reaction kettle, and heating and stirring at 90-110 ℃ for 4-8 hours to obtain an intermediate product;
(2) cooling to 80-90 ℃, adding 3-12 parts of isooctyl triethoxysilane into the reaction kettle, stirring for reaction for 1-2.5 hours, and adding 0.1-0.5 part of terminator for neutralization to obtain the active ingredients of the high-performance concrete protective agent;
(3) and cooling the effective components to room temperature, adding tetraethoxysilane, a surfactant and D40 solvent oil, and uniformly mixing to obtain a finished product of the high-performance concrete surface protective agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133951.1A CN111410556B (en) | 2020-03-02 | 2020-03-02 | High-performance concrete surface protective agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010133951.1A CN111410556B (en) | 2020-03-02 | 2020-03-02 | High-performance concrete surface protective agent and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111410556A CN111410556A (en) | 2020-07-14 |
| CN111410556B true CN111410556B (en) | 2022-04-05 |
Family
ID=71488981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010133951.1A Active CN111410556B (en) | 2020-03-02 | 2020-03-02 | High-performance concrete surface protective agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111410556B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112592205A (en) * | 2020-12-18 | 2021-04-02 | 杨华 | Concrete freeze-thaw resisting composite protective agent and preparation method thereof |
| CN117344310B (en) * | 2023-12-05 | 2024-05-17 | 江苏苏博特新材料股份有限公司 | Waterproof and oil-proof metal and concrete protective material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0359251A2 (en) * | 1988-09-16 | 1990-03-21 | Wacker-Chemie Gmbh | Compositions for coating high-voltage insulators |
| CN104789306A (en) * | 2015-02-11 | 2015-07-22 | 苏州螺丝猫信息技术有限公司 | Fastener rust loosing agent and preparation method thereof |
| CN113402912A (en) * | 2021-07-06 | 2021-09-17 | 中建材中岩科技有限公司 | Silane waterproof material for concrete protection and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881572B (en) * | 2014-03-10 | 2016-04-20 | 戚城 | A kind of stone protectant and preparation method thereof |
| CN104557134B (en) * | 2015-01-08 | 2016-12-07 | 重庆市巴南区前进机械厂 | A kind of enhancing firming agent for lithotome |
| CN105712740A (en) * | 2016-02-01 | 2016-06-29 | 济南大学 | Nano core-shell structure organic-inorganic compound concrete protective agent and preparation method and application thereof |
| CN106928908A (en) * | 2017-02-19 | 2017-07-07 | 广州市芯检康生物科技有限公司 | A kind of new aeroge multifunctional material and preparation method thereof |
| CN112110747A (en) * | 2019-06-19 | 2020-12-22 | 永春县永荣信息科技有限公司 | Preparation method of high-permeability silane impregnating paste |
| CN110655417B (en) * | 2019-10-12 | 2020-10-20 | 山东大学 | Composite nano material protective agent and method for protecting concrete surface by using same |
-
2020
- 2020-03-02 CN CN202010133951.1A patent/CN111410556B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0359251A2 (en) * | 1988-09-16 | 1990-03-21 | Wacker-Chemie Gmbh | Compositions for coating high-voltage insulators |
| CN104789306A (en) * | 2015-02-11 | 2015-07-22 | 苏州螺丝猫信息技术有限公司 | Fastener rust loosing agent and preparation method thereof |
| CN113402912A (en) * | 2021-07-06 | 2021-09-17 | 中建材中岩科技有限公司 | Silane waterproof material for concrete protection and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 微浓度过氧化氢的快速分光光度法检测;任东等;《现代化工》;20181031(第12期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111410556A (en) | 2020-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100820276B1 (en) | Composition compound for repairing concrete structure, manufacturing method thereof and repairing method of concrete structure using the composition compound | |
| CN105461349B (en) | A kind of resistance for steel fiber reinforced concrete top layer is become rusty hardening agent and preparation method thereof | |
| CN111410556B (en) | High-performance concrete surface protective agent and preparation method thereof | |
| CN104193289B (en) | A kind of hydrophobicity protective coating and preparation method thereof | |
| CN112079593B (en) | Siloxane modified super-hydrophobic geopolymer anticorrosive material and preparation method thereof | |
| CN107473624B (en) | Cement-based composite material based on steel fibers subjected to silane surface treatment | |
| CN110655417B (en) | Composite nano material protective agent and method for protecting concrete surface by using same | |
| CN106675395A (en) | Permeation type organosilicone protecting agent for surface of building and preparation method of permeation type organosilicone protecting agent | |
| CN101422774B (en) | Preparation method of enamel surface coatings with hydrophobic effect | |
| CN113174152A (en) | Lithium silicate penetrating protective coating composition and preparation method thereof | |
| CN114989647A (en) | High-bonding-strength water-based inorganic aerogel thermal insulation coating and preparation method thereof | |
| CN101708976A (en) | Liquid composition used for reinforcing concrete, preparation method thereof and application thereof | |
| KR101702863B1 (en) | Permeable inorganic membrane curing composition with durability and surface reinforcing functions of concrete and method for manufacturing thereof | |
| CN110723986A (en) | Cement surface permeable crystallization plugging type rigid waterproof agent | |
| KR100500151B1 (en) | Method of preparing waterproof admixture for waterproofing and anticorrosive treatment of concrete, and waterproof admixture prepared thereby | |
| KR20130106644A (en) | Binder compositions of hybrid modified silicates and method for preparing the same | |
| CN116178047B (en) | Concrete surface hole sealing agent, preparation method thereof and concrete | |
| CN112299750A (en) | Water-based capillary crystalline waterproofing agent | |
| CN103601448A (en) | Preparation method of wall body for modular building | |
| CN111056766A (en) | Preparation method of waterproof agent | |
| CN114456658B (en) | Sealing rubber primer coating liquid and preparation method thereof | |
| CN114656285A (en) | Silane permeable material | |
| CN114276750B (en) | Concrete surface layer reinforcing material and preparation and construction method thereof | |
| CN115490536A (en) | Water-based permeable inorganic waterproof agent and preparation method and application thereof | |
| CN116986868A (en) | High-permeability concrete protective coating and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |