CN112110747A - Preparation method of high-permeability silane impregnating paste - Google Patents
Preparation method of high-permeability silane impregnating paste Download PDFInfo
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- CN112110747A CN112110747A CN201910530673.0A CN201910530673A CN112110747A CN 112110747 A CN112110747 A CN 112110747A CN 201910530673 A CN201910530673 A CN 201910530673A CN 112110747 A CN112110747 A CN 112110747A
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- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910000077 silane Inorganic materials 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000004945 emulsification Methods 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 230000001804 emulsifying effect Effects 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 15
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 14
- ALVYUZIFSCKIFP-UHFFFAOYSA-N triethoxy(2-methylpropyl)silane Chemical compound CCO[Si](CC(C)C)(OCC)OCC ALVYUZIFSCKIFP-UHFFFAOYSA-N 0.000 claims abstract description 14
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 13
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920002522 Wood fibre Polymers 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 12
- 239000011259 mixed solution Substances 0.000 claims abstract description 12
- 239000002025 wood fiber Substances 0.000 claims abstract description 12
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 11
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007864 aqueous solution Substances 0.000 claims abstract description 11
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229940075507 glyceryl monostearate Drugs 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 claims abstract description 11
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 11
- 229940051841 polyoxyethylene ether Drugs 0.000 claims abstract description 11
- 229920000056 polyoxyethylene ether Polymers 0.000 claims abstract description 11
- 229920002545 silicone oil Polymers 0.000 claims abstract description 11
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 11
- DUIOKRXOKLLURE-UHFFFAOYSA-N 2-octylphenol Chemical compound CCCCCCCCC1=CC=CC=C1O DUIOKRXOKLLURE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 6
- 238000007598 dipping method Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 239000013530 defoamer Substances 0.000 claims description 6
- 229960004418 trolamine Drugs 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000004570 mortar (masonry) Substances 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- -1 chlorine ions) Chemical class 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 230000009545 invasion Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- 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
- C04B41/65—Coating or impregnation with inorganic materials
-
- 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
- C04B41/4596—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 fibrous materials or whiskers
-
- 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
-
- 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
- C04B41/47—Oils, fats or waxes natural resins
-
- 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
- C04B41/48—Macromolecular compounds
- C04B41/488—Other macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
- C04B41/4896—Polyethers
-
- 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
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- 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
- C04B41/4922—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 monomers, i.e. as organosilanes RnSiX4-n, e.g. alkyltrialkoxysilane, dialkyldialkoxysilane
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- 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
- C04B41/50—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 inorganic materials
- C04B41/5022—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 inorganic materials with vitreous materials
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- 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
- C04B41/50—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 inorganic materials
- C04B41/5025—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 inorganic materials with ceramic materials
- C04B41/5035—Silica
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
The invention discloses a preparation method of high-permeability silane impregnating paste, which comprises the following steps: putting isobutyl triethoxysilane, ethyl orthosilicate and silica sol into a reaction kettle, mixing and stirring to obtain a base material; adding octyl phenol polyoxyethylene ether, glyceryl monostearate, sodium dodecyl benzene sulfonate and triethanolamine into deionized water, and stirring with an electromagnetic stirrer to obtain a mixed solution; putting the base material and the mixed solution into a high-speed emulsifying machine, then adding nano silicon dioxide, wood fiber and vitrified micro bubbles to mix for 20min, then adding a silicone oil defoaming agent, raising the temperature of the high-speed emulsifying machine, and emulsifying for the first time to obtain a product after the first emulsification; and adding a polyethylene glycol aqueous solution into the product obtained after the first emulsification, continuing the second emulsification, and cooling after a paste body is formed to obtain the high-permeability silane dipping paste.
Description
Technical Field
The invention relates to the technical field of silane impregnating paste, in particular to a preparation method of high-permeability silane impregnating paste.
Background
The concrete is a homogeneous material, has a porous structure, is used in a large amount in building engineering, the strength of the concrete comes from hydration of the cement, the hydration of the cement can only be carried out in capillary tubes filled with water, and the concrete is usually exposed in erosion environments such as water soluble ions (mainly chlorine ions), acid rain, low temperature and the like, is inevitably corroded and damaged, causes the physical and mechanical properties of the concrete to be reduced, and shortens the service life of the building engineering.
The concrete curing agent and the waterproof agent have various varieties, part of the curing agent and the waterproof agent have toxicity or higher viscosity, and the application effect is not ideal, mainly because the products only cover the surface of the concrete and cannot penetrate to enough depth, the thickness of the waterproof layer is insufficient, and the strength of the concrete is reduced and shrunk when the products are added into the concrete, so that the concrete waterproof agent which can penetrate to enough depth after being used and can effectively improve the strength of the concrete is required to be developed.
The silane has a small molecular structure and is a penetrating impregnant with excellent performance, the principle is that the deep penetration concrete capillary hole wall reacts with hydrated cement to form a polysiloxane interpenetrating network structure, the microstructure on the concrete surface is endowed with long-term hydrophobicity through firm chemical bonding reaction, the breathing and ventilation functions are kept, the invasion of water, harmful chloride ions and the like is greatly reduced, and the concrete structure is prevented from being corroded.
Chinese patent CN107512927A discloses a silane impregnation paste for concrete corrosion prevention, which comprises the following components in parts by weight: 35-65 parts of silane monomer, 1-6 parts of emulsifier, 0.5-1.5 parts of emulsion stabilizer, 15-35 parts of deionized water, 1-2 parts of thickener, 0.05-0.1 part of defoamer, 1-5 parts of preservative and 1-8 parts of dispersant, and the invention also discloses a preparation method of the silane impregnated paste for concrete corrosion prevention, which comprises the following steps: s1: raw material weighing, S2: preparing a base material, S3: adding ingredients, S4: cooling treatment is carried out, but the silane impregnation paste prepared by the invention has poor water absorption.
Chinese patent CN108587378A discloses a silane impregnant and a preparation method thereof, wherein tetraethoxysilane is used as a raw material, tartaric acid is used as a catalyst, a condensation product is obtained through hydrolysis, the tetraethoxysilane is generated through hydrolysis, then silicon dioxide gel is formed through in-situ condensation in pores of a base material, the pores are filled, the compactness of the treated base material is improved, and the purpose of protecting concrete stone is further achieved.
Disclosure of Invention
Aiming at the problems, the invention provides a preparation method of high-permeability silane impregnating paste, which comprises the following steps:
step S1, the high-permeability silane impregnating paste is prepared from the following raw materials in parts by weight: 55-75 parts of isobutyl triethoxysilane, 14-20 parts of nano silicon dioxide, 2-4 parts of triethanolamine, 15-22 parts of ethyl orthosilicate, 45-60 parts of silica sol, 12-18 parts of wood fiber, 7-10 parts of vitrified micro bubbles, 6-8 parts of octylphenol polyoxyethylene ether, 4-10 parts of glyceryl monostearate, 1-6 parts of sodium dodecyl benzene sulfonate, 20-50 parts of deionized water and 3-5 parts of a silicone oil defoamer;
the natural wood fiber is used as an additive, and a green environment-friendly material is used, so that the crack resistance and the water resistance are improved, the production cost is reduced, and the resources are saved; the nano silicon dioxide can be filled in concrete capillary pores to prevent corrosive gas from invading, and meanwhile, the silane forms a hydrophobic coating layer on the surface of the nano silicon dioxide to prevent liquid water from permeating; the small molecular structure of the isobutyl triethoxy silane can penetrate through the cementitious surface and permeate into the concrete to perform chemical reaction with water molecules in the concrete substrate to form a permanent and firm high-environmental-protection waterproof layer, and the isobutyl triethoxy silane can permeate deeply to inhibit water absorption so as to achieve the aim of waterproofing; the silica sol enters a certain depth position of the surface of the mortar or concrete, and forms crystals through chemical reaction with unhydrated cement particles and calcium hydroxide, and partial holes in the mortar or concrete are sealed;
step S2, putting the isobutyl triethoxy silane, the ethyl orthosilicate and the silica sol in parts by weight into a reaction kettle at the temperature of 90-100 ℃, and mixing and stirring for 15-22 min to obtain a base material;
step S3, adding the octyl phenol polyoxyethylene ether, the glyceryl monostearate, the sodium dodecyl benzene sulfonate and the triethanolamine in parts by weight into the deionized water in parts by weight, stirring for the first time at the speed of 300-500 rpm by using an electromagnetic stirrer, raising the temperature to 70-90 ℃, and continuing to stir for the second time at the speed of 400-600 rpm to obtain a mixed solution;
step S4, putting the base material obtained in the step S2 and the mixed solution obtained in the step S3 into a high-speed emulsifying machine, adding nano silicon dioxide, wood fibers and vitrified micro bubbles, mixing for 20min, adding the silicone oil defoaming agent in parts by weight, raising the temperature of the high-speed emulsifying machine to 110-125 ℃, and carrying out first emulsification at the rotating speed of 2000-4000 rpm for 0.5-2 h to obtain a product after the first emulsification;
and step S5, dripping 10-15% polyethylene glycol aqueous solution into the first emulsified product obtained in the step S4, carrying out second emulsification at the rotating speed of 3000 r/min-5000 r/min, stopping adding the polyethylene glycol aqueous solution after a paste is formed, and then cooling to room temperature to obtain the high-permeability silane dipping paste.
Further, in step S2, the pressure of the reaction kettle is 200kPa to 350 kPa.
Further, in step S3, the first stirring time is 5 to 10 min.
Further, in step S3, the second stirring time is 30 to 40 min.
Further, in step S4, the first emulsification speed of the high-speed emulsifier is 2500 r/min-3500 r/min.
Further, in step S4, the temperature of the high-speed emulsifying machine is raised to 115 ℃ to 120 ℃.
Further, in step S5, the second emulsification time is 1 to 3 hours.
Further, in step S5, the second emulsification temperature is 120 ℃ to 140 ℃.
Further, in step S6, the cooling rate is 2 ℃/min to 5 ℃/min.
The application has the advantages that:
(1) the main raw material of the silane impregnating paste disclosed by the invention is triethoxysilane, and the isobutyl triethoxysilane has a small molecular structure which can penetrate through a cementitious surface and permeate into the concrete to perform a chemical reaction with water molecules in a concrete substrate, so that a permanent and firm high-environmental-protection waterproof layer is formed, and the silane impregnating paste deeply permeates to inhibit water absorption so as to achieve the aim of preventing water;
(2) the nano silicon dioxide of the silane impregnation paste disclosed by the invention can obviously improve the thixotropy of the silane paste, improve the construction performance, simultaneously improve the production efficiency and the stability of the product, and at the impregnation depth of the concrete surface, the added silica sol enters a certain depth position of the concrete surface, and forms crystals through chemical reaction with unhydrated cement particles and calcium hydroxide, so that partial holes in mortar or concrete are sealed, the internal microstructure of the mortar or concrete is improved, the surface of the mortar or concrete is more compact, and the invasion of external water and harmful ions is effectively blocked.
Detailed Description
The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.
Example 1
A preparation method of high-permeability silane impregnating paste comprises the following steps:
step S1, the high-permeability silane impregnating paste is prepared from the following raw materials in parts by weight: 55kg of isobutyl triethoxysilane, 14kg of nano silicon dioxide, 2kg of triethanolamine, 15kg of ethyl orthosilicate, 45kg of silica sol, 12kg of wood fiber, 7kg of vitrified micro bubbles, 6kg of octylphenol polyoxyethylene ether, 4kg of glyceryl monostearate, 1kg of sodium dodecyl benzene sulfonate, 20kg of deionized water and 3kg of silicone oil defoamer;
step S2, putting the isobutyl triethoxy silane, the ethyl orthosilicate and the silica sol in parts by weight into a reaction kettle with the temperature of 90 ℃ and the pressure of 200kPa, and mixing and stirring for 15-22 min to obtain a base material;
step S3, adding the parts by weight of octyl phenol polyoxyethylene ether, glyceryl monostearate, sodium dodecyl benzene sulfonate and triethanolamine into the parts by weight of deionized water, stirring for the first time for 5min at the speed of 300rpm by using an electromagnetic stirrer, raising the temperature to 70 ℃, and stirring for the second time for 30min at the speed of 400rpm to obtain a mixed solution;
step S4, putting the base material obtained in the step S2 and the mixed solution obtained in the step S3 into a high-speed emulsifying machine, adding the parts by weight of nano silicon dioxide, wood fiber and vitrified micro bubbles, mixing for 20min, adding the parts by weight of silicone oil defoaming agent, raising the temperature of the high-speed emulsifying machine to 115 ℃, and carrying out first emulsification at the rotating speed of 2500r/min for 0.5h to obtain a product after the first emulsification;
and step S5, dropwise adding a 10% polyethylene glycol aqueous solution into the first emulsified product obtained in the step S4, carrying out second emulsification at the rotation speed of 3000r/min for 1h and the temperature of 120 ℃, stopping adding the polyethylene glycol aqueous solution after a paste is formed, and cooling to room temperature at the cooling rate of 2 ℃/min to obtain the high-permeability silane impregnating paste.
Example 2
A preparation method of high-permeability silane impregnating paste comprises the following steps:
step S1, the high-permeability silane impregnating paste is prepared from the following raw materials in parts by weight: 75kg of isobutyl triethoxysilane, 20kg of nano silicon dioxide, 4kg of triethanolamine, 22kg of ethyl orthosilicate, 60kg of silica sol, 18kg of wood fiber, 10kg of vitrified micro bubbles, 8kg of octylphenol polyoxyethylene ether, 10kg of glyceryl monostearate, 6kg of sodium dodecyl benzene sulfonate, 30kg of deionized water and 5kg of silicone oil defoamer;
step S2, putting the isobutyl triethoxy silane, the ethyl orthosilicate and the silica sol in parts by weight into a reaction kettle with the temperature of 100 ℃ and the pressure of 350kPa for mixing and stirring for 22min to obtain a base material;
step S3, adding the parts by weight of octyl phenol polyoxyethylene ether, glyceryl monostearate, sodium dodecyl benzene sulfonate and triethanolamine into the parts by weight of deionized water, stirring for the first time for 10min at the speed of 500rpm by using an electromagnetic stirrer, raising the temperature to 90 ℃, and stirring for the second time for 40min at the speed of 600rpm to obtain a mixed solution;
step S4, putting the base material obtained in the step S2 and the mixed solution obtained in the step S3 into a high-speed emulsifying machine, adding the parts by weight of nano silicon dioxide, wood fiber and vitrified micro bubbles, mixing for 20min, adding the parts by weight of silicone oil defoaming agent, raising the temperature of the high-speed emulsifying machine to 120 ℃, and carrying out first emulsification at the rotating speed of 3500r/min for 2h to obtain a product after the first emulsification;
and S5, dripping 10% polyethylene glycol aqueous solution into the first emulsified product obtained in the step S4, emulsifying for the second time at the rotation speed of 5000r/min for 3 hours at the temperature of 140 ℃, stopping adding the polyethylene glycol aqueous solution after a paste is formed, cooling to room temperature at the cooling rate of 5 ℃/min, and cooling to room temperature to obtain the high-permeability silane impregnating paste.
Example 3
A preparation method of high-permeability silane impregnating paste comprises the following steps:
step S1, the high-permeability silane impregnating paste is prepared from the following raw materials in parts by weight: 60kg of isobutyl triethoxysilane, 17kg of nano silicon dioxide, 3kg of triethanolamine, 18kg of ethyl orthosilicate, 50kg of silica sol, 16kg of wood fiber, 9kg of vitrified micro bubbles, 7kg of octylphenol polyoxyethylene ether, 8kg of glyceryl monostearate, 4kg of sodium dodecyl benzene sulfonate, 30kg of deionized water and 4kg of silicone oil defoamer;
step S2, putting the isobutyl triethoxy silane, the ethyl orthosilicate and the silica sol in parts by weight into a reaction kettle with the temperature of 95 ℃ and the pressure of 250kPa, and mixing and stirring for 17min to obtain a base material;
step S3, adding the parts by weight of octyl phenol polyoxyethylene ether, glyceryl monostearate, sodium dodecyl benzene sulfonate and triethanolamine into the parts by weight of deionized water, stirring for the first time for 8min at the speed of 400rpm by using an electromagnetic stirrer, raising the temperature to 80 ℃, and stirring for the second time for 35min at the speed of 500rpm to obtain a mixed solution;
step S4, putting the base material obtained in the step S2 and the mixed solution obtained in the step S3 into a high-speed emulsifying machine, adding the parts by weight of nano silicon dioxide, wood fiber and vitrified micro bubbles, mixing for 20min, adding the parts by weight of silicone oil defoaming agent, raising the temperature of the high-speed emulsifying machine to 117 ℃, and carrying out first emulsification at the rotating speed of 3000r/min for 1h to obtain a product after the first emulsification;
and step S5, dripping 10% polyethylene glycol aqueous solution into the first emulsified product obtained in the step S4, emulsifying for the second time for 1.5 hours at the rotation speed of 4000r/min at the temperature of 130 ℃, stopping adding the polyethylene glycol aqueous solution after a paste is formed, and cooling to room temperature at the cooling rate of 3 ℃/min to obtain the high-permeability silane impregnating paste.
Examples of the experiments
The silane impregnant samples prepared in examples 1-3 and the commercially available silane impregnant samples were mixed at a ratio of 300g/m2The coating is coated on the surface of concrete with the strength of C40, and after being cured for one week at room temperature, the coating is tested according to the method in the specification JTJ275-2000, and the test results are shown in the following table 1:
TABLE 1 Properties of silane impregnating pastes obtained by the preparation methods of examples 1 to 3 of the present invention
As can be seen from the above table 1, compared with the silane impregnating paste sold in the market, the high-permeability silane impregnating paste prepared by the preparation method of the invention has the advantages of low water absorption, deep penetration depth, good chloride absorption reduction rate and wide market application prospect.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The preparation method of the high-permeability silane impregnating paste is characterized by comprising the following steps:
step S1, the high-permeability silane impregnating paste is prepared from the following raw materials in parts by weight: 55-75 parts of isobutyl triethoxysilane, 14-20 parts of nano silicon dioxide, 2-4 parts of triethanolamine, 15-22 parts of ethyl orthosilicate, 45-60 parts of silica sol, 12-18 parts of wood fiber, 7-10 parts of vitrified micro bubbles, 6-8 parts of octylphenol polyoxyethylene ether, 4-10 parts of glyceryl monostearate, 1-6 parts of sodium dodecyl benzene sulfonate, 20-50 parts of deionized water and 3-5 parts of a silicone oil defoamer;
step S2, putting the isobutyl triethoxy silane, the ethyl orthosilicate and the silica sol in parts by weight into a reaction kettle at the temperature of 90-100 ℃, and mixing and stirring for 15-22 min to obtain a base material;
step S3, adding the octyl phenol polyoxyethylene ether, the glyceryl monostearate, the sodium dodecyl benzene sulfonate and the triethanolamine in parts by weight into the deionized water in parts by weight, stirring for the first time at the speed of 300-500 rpm by using an electromagnetic stirrer, raising the temperature to 70-90 ℃, and stirring for the second time at the speed of 400-600 rpm to obtain a mixed solution;
step S4, putting the base material obtained in the step S2 and the mixed solution obtained in the step S3 into a high-speed emulsifying machine, adding the nano silicon dioxide, the wood fiber and the vitrified micro bubbles in parts by weight, mixing for 20min, adding the silicone oil defoaming agent in parts by weight, raising the temperature of the high-speed emulsifying machine to 110-125 ℃, and carrying out first emulsification at the rotating speed of 2000-4000 rpm for 0.5-2 h to obtain a product after first emulsification;
and step S5, dripping 10-15% polyethylene glycol aqueous solution into the first emulsified product obtained in the step S4, carrying out second emulsification at the rotating speed of 3000 r/min-5000 r/min, stopping adding the polyethylene glycol aqueous solution after a paste is formed, and then cooling to room temperature to obtain the high-permeability silane dipping paste.
2. The method according to claim 1, wherein the reaction tank pressure in step S2 is 200kPa to 350 kPa.
3. The method according to claim 1, wherein in step S3, the first stirring time of the electromagnetic stirrer is 5 to 10 min.
4. The method according to claim 1, wherein in step S3, the second stirring time of the electromagnetic stirrer is 30-40 min.
5. The method according to claim 1, wherein in step S4, the rotation speed of the first emulsification by the high-speed emulsifying machine is 2500r/min to 3500 r/min.
6. The method according to claim 1, wherein the temperature of the high-speed emulsifying machine is increased to 115 to 120 ℃ in step S4.
7. The method according to claim 1, wherein the second emulsification time in step S5 is 1 to 3 hours.
8. The method according to claim 1, wherein the second emulsification temperature is 120 to 140 ℃ in step S5.
9. The method according to claim 1, wherein the cooling rate is 2 ℃/min to 5 ℃/min in step S5.
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