CN114437627A - Water-based asphalt coating and preparation method thereof - Google Patents
Water-based asphalt coating and preparation method thereof Download PDFInfo
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- CN114437627A CN114437627A CN202210038834.6A CN202210038834A CN114437627A CN 114437627 A CN114437627 A CN 114437627A CN 202210038834 A CN202210038834 A CN 202210038834A CN 114437627 A CN114437627 A CN 114437627A
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- asphalt
- water
- asphalt coating
- aminosilane
- stirring
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- 239000010426 asphalt Substances 0.000 title claims abstract description 181
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 238000000576 coating method Methods 0.000 title claims abstract description 81
- 239000011248 coating agent Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 26
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000000839 emulsion Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000945 filler Substances 0.000 claims abstract description 20
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims description 89
- 239000000084 colloidal system Substances 0.000 claims description 42
- 239000000243 solution Substances 0.000 claims description 35
- 238000010438 heat treatment Methods 0.000 claims description 34
- 239000002270 dispersing agent Substances 0.000 claims description 32
- 238000009736 wetting Methods 0.000 claims description 32
- 239000011347 resin Substances 0.000 claims description 31
- 229920005989 resin Polymers 0.000 claims description 31
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000002562 thickening agent Substances 0.000 claims description 26
- 239000008149 soap solution Substances 0.000 claims description 22
- 239000003208 petroleum Substances 0.000 claims description 20
- 238000004132 cross linking Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 17
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000002518 antifoaming agent Substances 0.000 claims description 15
- 239000003995 emulsifying agent Substances 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 8
- 150000008065 acid anhydrides Chemical class 0.000 claims description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 8
- 150000001412 amines Chemical class 0.000 claims description 8
- 239000012874 anionic emulsifier Substances 0.000 claims description 8
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 8
- 229920003086 cellulose ether Polymers 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 7
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 7
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 150000003505 terpenes Chemical class 0.000 claims description 6
- 235000007586 terpenes Nutrition 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 239000002736 nonionic surfactant Substances 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 239000000344 soap Substances 0.000 claims description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 4
- 230000008961 swelling Effects 0.000 claims description 4
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 4
- FALRKNHUBBKYCC-UHFFFAOYSA-N 2-(chloromethyl)pyridine-3-carbonitrile Chemical compound ClCC1=NC=CC=C1C#N FALRKNHUBBKYCC-UHFFFAOYSA-N 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- VANNPISTIUFMLH-UHFFFAOYSA-N glutaric anhydride Chemical compound O=C1CCCC(=O)O1 VANNPISTIUFMLH-UHFFFAOYSA-N 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 229940014800 succinic anhydride Drugs 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 2
- 229920001038 ethylene copolymer Polymers 0.000 claims description 2
- 150000008064 anhydrides Chemical class 0.000 claims 1
- 150000007942 carboxylates Chemical class 0.000 claims 1
- 239000003002 pH adjusting agent Substances 0.000 claims 1
- 229920000058 polyacrylate Polymers 0.000 claims 1
- 229920005646 polycarboxylate Polymers 0.000 claims 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims 1
- 239000004566 building material Substances 0.000 abstract description 2
- 238000004078 waterproofing Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 239000002131 composite material Substances 0.000 description 10
- 229920000142 Sodium polycarboxylate Polymers 0.000 description 8
- 239000013530 defoamer Substances 0.000 description 8
- 238000004090 dissolution Methods 0.000 description 8
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 8
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 8
- 235000014113 dietary fatty acids Nutrition 0.000 description 6
- 239000000194 fatty acid Substances 0.000 description 6
- 229930195729 fatty acid Natural products 0.000 description 6
- -1 fatty acid salt Chemical class 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920001732 Lignosulfonate Polymers 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 125000005373 siloxane group Chemical group [SiH2](O*)* 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D195/00—Coating compositions based on bituminous materials, e.g. asphalt, tar, pitch
- C09D195/005—Aqueous compositions, e.g. emulsions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the field of building materials, and particularly relates to a water-based asphalt coating and a preparation method thereof. The raw material composition of the water-based asphalt coating comprises: 40-80 wt% of emulsified modified asphalt, 10-60 wt% of polymer emulsion, 0.1-0.5 wt% of amino silane solution and 0-30 wt% of filler. Compared with the common water-based asphalt coating, the water-based asphalt coating prepared by the invention has greatly improved mechanical properties, and can be used for side wall waterproofing by being compounded with coiled materials.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a water-based asphalt coating and a preparation method thereof.
Background
The common waterproof scheme in the side wall waterproof field at present has a composite system of coiled materials and a composite system of coiled materials and coatings, but in practical application, the composite system of the coiled materials and the coiled materials has the problems of high construction difficulty, low actual full-viscosity rate, low peel strength of the composite system of the coiled materials and the coatings, weak anti-sliding capability and the like, and finally, the problem of poor application effect is caused. Compared with a composite system of a coiled material and a coiled material, the composite system of the coating and the coiled material has wider applicability, and particularly, the composite system of the water-based asphalt coating and the coiled material has good cohesiveness to dry and wet base layers, good compatibility with asphalt coiled materials and high full-viscosity rate. However, the conventional asphalt coating is only purely physically mixed, a chemical bond bonding cross-linked structure is not formed, and the problem of insufficient anti-slip capability is shown in application.
Disclosure of Invention
The invention aims to solve the existing problems of a side wall waterproof composite system, provides a cross-linking type water-based asphalt coating for a composite coiled material and a preparation method thereof, can solve the problem of insufficient anti-slip capability of the existing coating and coiled material composite system, and fills the blank of an effective side wall waterproof implementation scheme.
In order to achieve the above object, a first aspect of the present invention provides an aqueous asphalt coating material, which comprises the following raw material components:
40-80 wt% of emulsified modified asphalt, 10-60 wt% of polymer emulsion, 0.1-0.5 wt% of amino silane solution and 0-30 wt% of filler;
the emulsified modified asphalt is prepared by modified asphalt and soap solution through a colloid mill;
the modified asphalt is obtained by modifying petroleum asphalt with acid anhydride and resin;
the soap solution is obtained by mixing an anionic emulsifier, water and an optional pH regulator;
the aminosilane solution is obtained by mixing and dispersing aminosilane and water and then sealing and storing.
According to the invention, in the raw material composition of the water-based asphalt coating, the filler is an optional added component, for example, the raw material composition of the water-based asphalt coating can be 59.5 wt% of emulsified modified asphalt, 40 wt% of polymer emulsion, 0.5 wt% of amino silane solution and 0 wt% of filler, namely, no filler is added; 50 wt% of emulsified modified asphalt, 40 wt% of polymer emulsion, 0.5 wt% of amino silane solution and 9.5 wt% of filler can be added.
According to the invention, a person skilled in the art can select whether to add a wetting dispersant, a defoaming agent and a thickening agent according to needs, and preferably, the water-based asphalt coating further comprises at least one of the following components: 0-1.0 wt% of wetting dispersant, 0-0.8 wt% of defoaming agent and 0-0.5 wt% of thickening agent.
It is further preferable that the above auxiliaries are added, that is, the aqueous asphalt coating further comprises:
0.1 to 1.0 weight percent of wetting dispersant, 0.2 to 0.8 weight percent of defoaming agent and 0.1 to 0.5 weight percent of thickening agent.
Preferably, the emulsified modified asphalt comprises the following raw materials:
40-60 wt% of petroleum asphalt, 1-5 wt% of acid anhydride, 3-15 wt% of resin, 0.5-3.0 wt% of anionic emulsifier, 0-0.1 wt% of pH regulator and 30-50 wt% of water.
More preferably, the raw material composition of the emulsified and modified asphalt is 0.02-0.1 wt% of pH regulator.
Preferably, the preparation method of the emulsified modified asphalt comprises the following steps:
(1) heating the petroleum asphalt to 140-150 ℃ and uniformly stirring;
(2) synchronously adding acid anhydride and resin into the petroleum asphalt at the stirring speed of 200-500rpm, and stirring for 1-3h to obtain modified asphalt; under the stirring time of 1-3h, the petroleum asphalt, acid anhydride and resin are crosslinked to form a crosslinked structure;
(3) mixing anionic emulsifier, optional pH regulator and water, controlling pH within 10-13, heating soap liquid to 40-55 deg.C, and stirring to obtain soap liquid;
(4) pouring 40-55 ℃ soap solution into a colloid mill, starting the colloid mill, slowly pouring 140-150 ℃ modified asphalt, keeping the colloid mill to continue operating for 20-40s after pouring to fully emulsify, and then closing the colloid mill to obtain the emulsified modified asphalt.
Preferably, the petroleum asphalt is No. 70 asphalt and/or No. 90 asphalt.
Preferably, the acid anhydride is at least one selected from the group consisting of maleic anhydride, succinic anhydride and glutaric anhydride.
Preferably, the resin is at least one selected from the group consisting of a petroleum resin, a hydrogenated petroleum resin, a rosin resin, a hydrogenated rosin resin, a terpene resin, and a hydrogenated terpene resin.
Preferably, the anionic emulsifier is at least one selected from the group consisting of a sulfonate-type emulsifier and a carboxylate-type emulsifier.
Preferably, the pH regulator is sodium hydroxide.
Preferably, the preparation method of the aminosilane solution comprises the following steps:
1) dripping 1-10% water into aminosilane, and performing ultrasonic dispersion for 10-20 min; the water with the mass fraction of 1-10% can partially hydrolyze amino silane, so that the amino silane can be added into the coating conveniently and can be crosslinked more fully; and the dropping ensures that the hydrolysis has proper speed;
2) and (3) hermetically preserving at 20-30 ℃ for 1-2h to obtain an aminosilane solution, wherein the obtained aminosilane solution can reach the most stable state under the preservation time.
Preferably, the aminosilane is an aminosilane comprising a trimethoxy and/or triethoxy end-capping.
Further preferably, the aminosilane is selected from at least one of N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltriethoxysilane, bis (gamma-trimethoxysilylpropyl) amine, and bis (gamma-triethoxysilylpropyl) amine.
Preferably, the polymer emulsion is at least one selected from the group consisting of acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, styrene-butadiene rubber emulsion and chloroprene rubber emulsion.
Preferably, the filler is one selected from calcium carbonate, barium sulfate, titanium dioxide, talc and bentonite.
Preferably, the wetting dispersant is at least one selected from the group consisting of a sodium polycarboxylate type wetting dispersant, a sodium polyacrylate type wetting dispersant and a nonionic surfactant type wetting dispersant.
Preferably, the defoaming agent is at least one selected from the group consisting of a polyether defoaming agent and a silicone defoaming agent.
Preferably, the thickener is at least one selected from the group consisting of cellulose ether thickeners, associative thickeners, and alkali swelling thickeners.
According to the invention, the peel strength retention rate of the water-based asphalt coating before and after soaking is not lower than 90%; the peel strength retention rate before and after soaking (peel strength after soaking for n days/peel strength without soaking) is 100%, and n is not less than 7. In the most basic case, n is usually selected to be 7, and n may be determined to be 10, 14, or the like according to the test case.
According to the invention, the shear strength of the water-based asphalt coating in the sliding resistance test item is not lower than 0.15 MPa.
The second aspect of the present invention provides a method for preparing the above-mentioned water-based asphalt coating, wherein the method comprises the following steps, when no auxiliary agent is added:
a. uniformly mixing the polymer emulsion, optional filler and emulsified modified asphalt;
b. and c, controlling the temperature of the mixture obtained in the step a to be 45-50 ℃, adding an aminosilane solution, and uniformly mixing to obtain the cross-linked water-based asphalt coating.
When at least one auxiliary agent is added, the preparation method of the water-based asphalt coating comprises the following steps:
i, uniformly mixing the polymer emulsion, optional wetting dispersant, optional defoamer, optional filler and emulsified modified asphalt;
II, controlling the temperature of the mixture obtained in the step I to be 45-50 ℃, adding an aminosilane solution, and uniformly mixing;
III, controlling the system temperature to be 20-25 ℃, adding a thickening agent, and uniformly mixing to obtain the cross-linked water-based asphalt coating;
wherein step III is an optional step.
In one embodiment, the method for preparing the aqueous asphalt coating comprises the following steps:
(1) uniformly stirring the polymer emulsion, the wetting dispersant and the defoaming agent at the rotation speed of 200-400rpm, slowly adding the filler, and after the addition is finished, increasing the rotation speed to 800-1200rpm, and stirring for 30-50 min;
(2) reducing the stirring speed to 300-500rpm, adding the emulsified modified asphalt, and uniformly stirring;
(3) heating in water bath to control the temperature of the system to be 45-50 ℃, adding aminosilane solution, and stirring at the rotation speed of 300-500rpm for 20-40 min;
(4) removing the water bath for heating, controlling the temperature of the system to be 20-25 ℃, adding the thickening agent, increasing the rotating speed to 600-900rpm, and stirring for 20-30min to obtain the cross-linked water-based asphalt coating.
Compared with the prior art, the water-based asphalt coating has the following advantages:
(1) the obtained emulsified modified asphalt has higher mechanical property than the water-based asphalt coating prepared from the conventional emulsified asphalt and the emulsified modified asphalt through the crosslinking modification of the modified asphalt.
(2) By preparing the aminosilane solution and hydrolyzing part of siloxane groups, the aminosilane solution is added into the coating to effectively crosslink different components. The amino silane migrates to the surface of the emulsion particles of the polymer emulsion and the emulsified modified asphalt and is connected with the filler through hydroxyl and amino.
(3) The emulsified asphalt is prepared by modifying asphalt, amino silane solution is used as bridging, the emulsified modified asphalt, polymer emulsion and optional filler form a cross-linking type water-based asphalt coating through chemical bonds, and the anti-slip capacity of the prepared water-based asphalt coating is remarkably improved. Specifically, amino silane has lone pair electrons, and is mutually attracted with dispersoids in polymer emulsion and emulsified modified asphalt and migrates to the surface of the polymer emulsion and the emulsified modified asphalt, silicon hydroxyl groups hydrolyzed by silane are bonded with hydroxyl groups on the surface of the filler through hydrogen bond action, and then form covalent bonds with the filler along with dehydration reaction, and the amino groups also have chelation reaction with the surface of the filler.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In the examples of the present invention, each raw material was commercially available.
Example 1
The embodiment provides a crosslinking type water-based asphalt coating and a preparation method thereof.
Preparing emulsified modified asphalt: (1) taking 260g of Zhonghai 90#Heating the asphalt to 145 ℃, and uniformly stirring; (2) synchronously adding 10g of succinic anhydride and 30g of hydrogenated C5 petroleum resin into the asphalt at the stirring speed of 300rpm, and stirring for 1.5h after the addition is finished to obtain modified asphalt; (3) adding 0.12g of NaOH into 191g of water, adding 9g of lignosulfonate emulsifier after complete dissolution, heating to 50 ℃, and uniformly stirring to obtain a soap solution with the pH value of 12; (4) and pouring 50 ℃ soap solution into the colloid mill, starting the colloid mill, slowly pouring 145 ℃ modified asphalt, keeping the colloid mill to continuously run for 30s after pouring, and then closing the colloid mill to obtain the emulsified modified asphalt.
Preparation of aminosilane solution: (1) 0.03g of water is dropped into 1g N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, and ultrasonic dispersion is carried out for 15 min; (2) and (4) sealing and storing for 2h at the temperature of 20 ℃ to obtain an aminosilane solution.
Preparation of the crosslinking type water-based asphalt coating: (1) uniformly stirring 50g of acrylic emulsion, 40g of styrene-butadiene rubber emulsion, 0.3g of sodium polycarboxylate wetting dispersant, 0.6g of nonionic surfactant wetting dispersant and 1.5g of polyether defoamer at the rotation speed of 200rpm, slowly adding 15g of barium sulfate and 15g of talcum powder, increasing the rotation speed to 1000rpm after the addition is finished, and stirring for 40 min; (2) reducing the stirring speed to 300rpm, adding 180g of emulsified modified asphalt, and uniformly stirring; (3) heating in water bath to control the temperature to 45 ℃, continuously adding 0.6g of aminosilane solution, and stirring for 25min at the rotating speed of 300 rpm; (4) removing the water bath and heating, reducing to room temperature, adding 0.6g of cellulose ether thickening agent and 0.3g of association type thickening agent, increasing the rotating speed to 900rpm, and stirring for 20min to obtain the crosslinking type water-based asphalt coating A.
Example 2
The embodiment provides a crosslinking type water-based asphalt coating and a preparation method thereof.
Preparing emulsified modified asphalt: (1) 254g of Zhonghai 70#Heating the asphalt to 140 ℃, and uniformly stirring; (2) synchronously adding 6g of maleic anhydride, 20g C9 of petroleum resin and 20g of rosin resin into the asphalt at a stirring speed of 200rpm, and stirring for 2 hours after the addition to obtain modified asphalt; (3) adding 0.16g of NaOH into 189g of water, adding 11g of fatty acid salt emulsifier after complete dissolution, heating to 45 ℃, and uniformly stirring to obtain a soap solution with the pH value of 12; (4) pouring the soap solution with the temperature of 45 ℃ into a colloid mill, starting the colloid mill, slowly pouring the modified asphalt with the temperature of 140 ℃, keeping the colloid mill to continuously run for 30s after pouring, and then closing the colloid mill to obtain the emulsified modified asphalt.
Preparation of aminosilane solution: (1) dripping 0.08g of water into 2g of di (gamma-trimethoxysilylpropyl) amine, and ultrasonically dispersing for 20 min; (2) and sealing and storing for 1h at 25 ℃ to obtain an aminosilane solution.
Preparation of the crosslinking type water-based asphalt coating: (1) taking 60g of acrylic emulsion, 0.3g of sodium polycarboxylate wetting dispersant, 0.3g of sodium polyacrylate wetting dispersant and 1.5g of organic silicon defoamer, uniformly stirring at the rotation speed of 200rpm, slowly adding 20g of titanium dioxide, increasing the rotation speed to 900rpm after the addition is finished, and stirring for 50 min; (2) reducing the stirring speed to 400rpm, adding 220g of emulsified modified asphalt, and uniformly stirring; (3) heating in water bath to control the temperature to 47 ℃, continuously adding 1.2g of aminosilane solution, and stirring for 40min at the rotation speed of 400 rpm; (4) removing the water bath and heating, reducing to room temperature, adding 0.9g of cellulose ether thickening agent, increasing the rotating speed to 850rpm, and stirring for 25min to obtain the crosslinking type water-based asphalt coating B.
Example 3
The embodiment provides a crosslinking type water-based asphalt coating and a preparation method thereof.
Preparing emulsified modified asphalt: (1) mixing 235g of shell 90#Heating the asphalt to 150 ℃, and uniformly stirring; (2) synchronously adding 15g of glutaric anhydride and 50g of hydrogenated terpene resin into the asphalt at the stirring speed of 400rpm, and stirring for 3 hours after the addition is finished to obtain modified asphalt; (3) adding 0.2g of NaOH into 187g of water, adding 13g of fatty acid salt emulsifier after complete dissolution, heating to 50 ℃, and uniformly stirring to obtain a soap solution with the pH value of 12; (4) pouring 50 ℃ soap solution into a colloid mill, starting the colloid mill, slowly pouring 150 ℃ modified asphalt, keeping the colloid mill to continuously operate for 30s after pouring, and then closing the colloid mill to obtain the emulsified modified asphalt.
Preparation of aminosilane solution: (1) 0.02g of water is dropped into 1g N-beta- (aminoethyl) -gamma-aminopropyltriethoxysilane, and ultrasonic dispersion is carried out for 13 min; (2) and sealing and storing for 1.5h at 25 ℃ to obtain an aminosilane solution.
Preparation of the crosslinking type water-based asphalt coating: (1) uniformly stirring 60g of EVA emulsion, 20g of styrene-butadiene rubber emulsion, 0.3g of sodium polyacrylate wetting dispersant, 0.6g of nonionic surfactant wetting dispersant, 1g of polyether defoaming agent and 0.5g of organic silicon defoaming agent at the rotation speed of 200rpm, slowly adding 40g of calcium carbonate and 20g of titanium dioxide, increasing the rotation speed to 1100rpm after the addition is finished, and stirring for 40 min; (2) reducing the stirring speed to 300rpm, adding 160g of emulsified modified asphalt, and uniformly stirring; (3) heating in water bath, controlling the temperature to be 50 ℃, continuously adding 0.9g of aminosilane solution, and stirring for 35min at the rotating speed of 300 rpm; (4) removing the water bath, heating, reducing to room temperature, adding 0.9g of alkali swelling thickener, increasing the rotation speed to 700rpm, and stirring for 30min to obtain the cross-linked water-based asphalt coating C.
Example 4
The embodiment provides a crosslinking type water-based asphalt coating and a preparation method thereof.
Preparing emulsified modified asphalt: (1) 241g of east China sea 70#Heating the asphalt to 145 ℃, stirringUniformly stirring; (2) synchronously adding 9g of maleic anhydride, 30g C5 g of petroleum resin and 20g of hydrogenated terpene resin into the asphalt at the stirring speed of 300rpm, and stirring for 2.5 hours after the addition is finished to obtain modified asphalt; (3) adding 0.15g of NaOH into 190g of water, adding 10g of lignosulfonate emulsifier after complete dissolution, heating to 40 ℃, and uniformly stirring to obtain a soap solution with the pH value of 12; (4) pouring 40 ℃ soap solution into a colloid mill, starting the colloid mill, slowly pouring 145 ℃ modified asphalt, keeping the colloid mill to continuously operate for 30s after pouring, and then closing the colloid mill to obtain the emulsified modified asphalt.
Preparation of aminosilane solution: (1) dripping 0.08 water into 1g of di (gamma-triethoxysilylpropyl) amine, and ultrasonically dispersing for 20 min; (2) and (4) sealing and storing for 1.5h at the temperature of 30 ℃ to obtain an aminosilane solution.
Preparation of the crosslinking type water-based asphalt coating: (1) uniformly stirring 20g of EVA emulsion, 40g of chloroprene rubber emulsion, 0.3g of sodium polycarboxylate wetting dispersant, 0.3g of sodium polyacrylate wetting dispersant and 1.2g of organic silicon defoamer at the rotation speed of 200rpm, slowly adding 20g of barium sulfate and 10g of talcum powder, increasing the rotation speed to 850rpm after the addition is finished, and stirring for 40 min; (2) reducing the stirring speed to 350rpm, adding 210g of emulsified modified asphalt, and uniformly stirring; (3) heating in water bath to control temperature to 48 deg.C, adding 0.7g aminosilane solution, and stirring at 350rpm for 30 min; (4) removing the water bath and heating, reducing to room temperature, adding 0.3g of association type thickening agent and 0.3g of alkali swelling type thickening agent, increasing the rotating speed to 800rpm, and stirring for 30min to obtain the cross-linked water-based asphalt coating D.
Comparative example 1
This comparative example provides a water-borne asphalt coating and a method of making the same.
Preparing emulsified asphalt: (1) 300g of Zhonghai 70#Heating the asphalt to 140 ℃, and uniformly stirring; (2) adding 0.16g of NaOH into 189g of water, adding 11g of fatty acid salt emulsifier after complete dissolution, heating to 45 ℃, and uniformly stirring to obtain a soap solution; (3) adding 45 deg.C soap solution into colloid mill, starting colloid mill, and slowly adding 140 deg.C Zhonghai 70#And (4) asphalt, keeping the colloid mill to continue running for 30s after pouring, and then closing the colloid mill to obtain emulsified asphalt.
Preparation of aminosilane solution: (1) dripping 0.08g of water into 2g of di (gamma-trimethoxysilylpropyl) amine, and ultrasonically dispersing for 20 min; (2) and sealing and storing for 1h at 25 ℃ to obtain an aminosilane solution.
Preparation of the water-based asphalt coating: (1) taking 60g of acrylic emulsion, 0.3g of sodium polycarboxylate wetting dispersant, 0.3g of sodium polyacrylate wetting dispersant and 1.5g of organic silicon defoamer, uniformly stirring at the rotation speed of 200rpm, slowly adding 20g of titanium dioxide, increasing the rotation speed to 900rpm after the addition is finished, and stirring for 50 min; (2) reducing the stirring speed to 400rpm, adding 220g of emulsified asphalt, and uniformly stirring; (3) heating in water bath to control the temperature to 47 ℃, continuously adding 1.2g of aminosilane solution, and stirring for 40min at the rotation speed of 400 rpm; (4) removing the water bath and heating, reducing to room temperature, adding 0.9g of cellulose ether thickening agent, increasing the rotating speed to 850rpm, and stirring for 25min to obtain the water-based asphalt coating B-1.
Comparative example 2
This comparative example provides a water-borne asphalt coating and a method of making the same.
Preparing emulsified asphalt: (1) 300g of Zhonghai 70#Heating the asphalt to 140 ℃, and uniformly stirring; (2) adding 0.16g of NaOH into 189g of water, adding 11g of fatty acid salt emulsifier after complete dissolution, heating to 45 ℃, and uniformly stirring to obtain a soap solution; (4) adding 45 deg.C soap solution into colloid mill, starting colloid mill, and slowly adding 140 deg.C Zhonghai 70#And (4) asphalt, keeping the colloid mill to continue running for 30s after pouring, and then closing the colloid mill to obtain emulsified asphalt.
Preparation of the water-based asphalt coating: (1) taking 60g of acrylic emulsion, 0.3g of sodium polycarboxylate wetting dispersant, 0.3g of sodium polyacrylate wetting dispersant and 1g of organic silicon defoamer, uniformly stirring at the rotation speed of 200rpm, slowly adding 20g of titanium dioxide, increasing the rotation speed to 900rpm after the addition is finished, and stirring for 50 min; (2) reducing the stirring speed to 400rpm, adding 220g of emulsified asphalt, and uniformly stirring; (3) and adding 0.9g of cellulose ether thickening agent, increasing the rotating speed to 850rpm, and stirring for 25min to obtain the water-based asphalt coating B-2.
Comparative example 3
This comparative example provides a water-borne asphalt coating and a method of making the same.
Preparing emulsified modified asphalt: (1) 254g of Zhonghai 70#Heating the asphalt to 140 ℃, and uniformly stirring; (2) synchronously adding 6g of maleic anhydride, 20g C9 of petroleum resin and 20g of rosin resin into the asphalt at a stirring speed of 200rpm, and stirring for 2 hours after the addition to obtain modified asphalt; (3) adding 0.16g of NaOH into 189g of water, adding 11g of fatty acid salt emulsifier after complete dissolution, heating to 45 ℃, and uniformly stirring to obtain a soap solution; (4) pouring the soap solution with the temperature of 45 ℃ into a colloid mill, starting the colloid mill, slowly pouring the modified asphalt with the temperature of 140 ℃, keeping the colloid mill to continuously run for 30s after pouring, and then closing the colloid mill to obtain the emulsified modified asphalt.
Preparation of the water-based asphalt coating: (1) taking 60g of acrylic emulsion, 0.3g of sodium polycarboxylate wetting dispersant, 0.3g of sodium polyacrylate wetting dispersant and 1.5g of organic silicon defoamer, uniformly stirring at the rotation speed of 200rpm, slowly adding 20g of titanium dioxide, increasing the rotation speed to 900rpm after the addition is finished, and stirring for 50 min; (2) reducing the stirring speed to 400rpm, adding 220g of emulsified modified asphalt, and uniformly stirring; (3) and adding 0.9g of cellulose ether thickening agent, increasing the rotating speed to 850rpm, and stirring for 25min to obtain the water-based asphalt coating B-3.
Comparative example 4
This comparative example provides a water-borne asphalt coating and a method of making the same.
Preparing emulsified modified asphalt: (1) 254g of Zhonghai 70#Heating the asphalt to 140 ℃, and uniformly stirring; (2) synchronously adding 6g of maleic anhydride, 20g C9 of petroleum resin and 20g of rosin resin into the asphalt at a stirring speed of 200rpm, and stirring for 2 hours after the addition to obtain modified asphalt; (3) adding 0.16g of NaOH into 189g of water, adding 11g of fatty acid salt emulsifier after complete dissolution, heating to 45 ℃, and uniformly stirring to obtain a soap solution; (4) pouring the soap solution with the temperature of 45 ℃ into a colloid mill, starting the colloid mill, slowly pouring the modified asphalt with the temperature of 140 ℃, keeping the colloid mill to continuously run for 30s after pouring, and then closing the colloid mill to obtain the emulsified modified asphalt.
Preparation of the water-based asphalt coating: (1) taking 60g of acrylic emulsion, 0.3g of sodium polycarboxylate wetting dispersant, 0.3g of sodium polyacrylate wetting dispersant and 1.5g of organic silicon defoamer, uniformly stirring at the rotation speed of 200rpm, slowly adding 20g of titanium dioxide, increasing the rotation speed to 900rpm after the addition is finished, and stirring for 50 min; (2) reducing the stirring speed to 400rpm, adding 220g of emulsified modified asphalt, and uniformly stirring; (3) heating in water bath at 47 deg.C, adding 1.2g di (gamma-trimethoxysilylpropyl) amine, and stirring at 400rpm for 40 min; (4) removing the water bath and heating, reducing to room temperature, adding 0.9g of cellulose ether thickening agent, increasing the rotating speed to 850rpm, and stirring for 25min to obtain the water-based asphalt coating B-4.
The water-based asphalt coatings obtained in the examples and the comparative examples are subjected to performance tests by referring to the standards of ' water-emulsion type asphalt waterproof coating JC/T408- ' and ' high-viscosity and anti-skid water-based rubber asphalt waterproof coating Q/SY YHF 0135- ' 2021 ', and the results are shown in Table 1.
TABLE 1 Performance test results for aqueous asphalt coatings
As can be seen from Table 1, by using the specific emulsified and modified asphalt, the self-made aminosilane solution, the polymer latex and other raw materials to form a specific collocation, compared with comparative examples 1-4, examples 1-4 show higher bonding strength, peeling strength after being soaked for 7 days, elongation at break and low-temperature flexibility, so that the crosslinking characteristics and the better mechanical properties of the crosslinking type water-based asphalt coating are verified, and the crosslinking structure formed by the examples 1-4 is inseparable, therefore, the water resistance, the mechanical properties and the low-temperature properties of the examples are obviously better than those of the comparative examples. In the comparative example, although the same latex, filler and auxiliary were used, no crosslinked coating could be formed in the absence of the specific emulsion-modified asphalt or the self-made partially hydrolyzed aminosilane, and thus the effect consistent with the present invention could not be obtained.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (13)
1. The water-based asphalt coating is characterized by comprising the following raw materials:
40-80 wt% of emulsified modified asphalt, 10-60 wt% of polymer emulsion, 0.1-0.5 wt% of amino silane solution and 0-30 wt% of filler;
the emulsified modified asphalt is prepared by modified asphalt and soap solution through a colloid mill;
the modified asphalt is obtained by modifying petroleum asphalt with acid anhydride and resin;
the soap solution is obtained by mixing an anionic emulsifier, water and an optional pH regulator;
the aminosilane solution is obtained by mixing and dispersing aminosilane and water and then sealing and storing.
2. The aqueous asphalt coating of claim 1, further comprising at least one of the following components:
0-1.0 wt% of wetting dispersant, 0-0.8 wt% of defoaming agent and 0-0.5 wt% of thickening agent;
preferably, the aqueous asphalt coating further comprises:
0.1 to 1.0 weight percent of wetting dispersant, 0.2 to 0.8 weight percent of defoaming agent and 0.1 to 0.5 weight percent of thickening agent.
3. The aqueous asphalt coating material according to claim 1, wherein the raw material composition of the emulsified modified asphalt comprises:
40-60 wt% of petroleum asphalt, 1-5 wt% of acid anhydride, 3-15 wt% of resin, 0.5-3.0 wt% of anionic emulsifier, 0-0.1 wt% of pH regulator and 30-50 wt% of water;
preferably, the pH adjusting agent is 0.02-0.1 wt%.
4. The aqueous asphalt coating material according to claim 1, wherein the preparation method of the emulsified and modified asphalt comprises:
(1) heating the petroleum asphalt to 140-150 ℃ and uniformly stirring;
(2) synchronously adding acid anhydride and resin into the petroleum asphalt at the stirring speed of 200-500rpm, and stirring for 1-3h to obtain modified asphalt;
(3) mixing anionic emulsifier, optional pH regulator and water, controlling pH within 10-13, heating soap liquid to 40-55 deg.C, and stirring to obtain soap liquid;
(4) pouring 40-55 ℃ soap solution into a colloid mill, starting the colloid mill, slowly pouring 140-150 ℃ modified asphalt, keeping the colloid mill to continuously operate for 20-40s after pouring, and then closing the colloid mill to obtain the emulsified modified asphalt.
5. The aqueous asphalt coating according to claim 1,
the petroleum asphalt is No. 70 asphalt and/or No. 90 asphalt;
the anhydride is selected from at least one of maleic anhydride, succinic anhydride and glutaric anhydride;
the resin is at least one selected from petroleum resin, hydrogenated petroleum resin, rosin resin, hydrogenated rosin resin, terpene resin and hydrogenated terpene resin;
the anionic emulsifier is at least one selected from sulfonate type emulsifiers and carboxylate type emulsifiers;
the pH regulator is sodium hydroxide.
6. The aqueous asphalt coating of claim 1, wherein the aminosilane solution is prepared by a method comprising:
1) dripping 1-10% water into aminosilane, and performing ultrasonic dispersion for 10-20 min;
2) sealing and storing for 1-2h at 20-30 ℃ to obtain aminosilane solution.
7. The aqueous asphalt coating according to claim 1,
the aminosilane is an aminosilane comprising a trimethoxy and/or triethoxy end-capping;
preferably, the aminosilane is selected from at least one of N-beta- (aminoethyl) -gamma-aminopropyltrimethoxysilane, N-beta- (aminoethyl) -gamma-aminopropyltriethoxysilane, bis (gamma-trimethoxysilylpropyl) amine, and bis (gamma-triethoxysilylpropyl) amine.
8. The aqueous asphalt coating according to claim 1,
the polymer emulsion is at least one selected from acrylic emulsion, vinyl acetate-ethylene copolymer emulsion, styrene-butadiene rubber emulsion and chloroprene rubber emulsion;
the filler is selected from one of calcium carbonate, barium sulfate, titanium dioxide, talcum powder and bentonite.
9. The aqueous asphalt coating material according to claim 2,
the wetting dispersant is selected from at least one of polycarboxylate type wetting dispersants, polyacrylate type wetting dispersants and nonionic surfactant type wetting dispersants;
the defoaming agent is at least one of polyether defoaming agent and organic silicon defoaming agent;
the thickening agent is at least one selected from cellulose ether thickening agents, associative thickening agents and alkali swelling thickening agents.
10. The aqueous asphalt coating material according to any one of claims 1 to 9,
the peel strength retention rate of the water-based asphalt coating before and after soaking is not lower than 90%;
the peel strength retention rate before and after soaking (peel strength after soaking for n days/peel strength without soaking) is 100%, and n is not less than 7.
11. The aqueous asphalt coating material according to any one of claims 1 to 9, wherein the shear strength in the slip resistance test item of the aqueous asphalt coating material is not less than 0.15 MPa.
12. The method of preparing an aqueous asphalt coating material according to any one of claims 1 and 3 to 9, comprising:
a. uniformly mixing the polymer emulsion, optional filler and emulsified modified asphalt;
b. and c, controlling the temperature of the mixture obtained in the step a to be 45-50 ℃, adding an aminosilane solution, and uniformly mixing to obtain the crosslinking type water-based asphalt coating.
13. A method of preparing an aqueous asphalt coating according to any of claims 2 to 9, characterized in that it comprises:
uniformly mixing the polymer emulsion, an optional wetting dispersant, an optional defoaming agent, an optional filler and emulsified modified asphalt;
II, controlling the temperature of the mixture obtained in the step I to be 45-50 ℃, adding an aminosilane solution, and uniformly mixing;
III, controlling the system temperature to be 20-25 ℃, adding a thickening agent, and uniformly mixing to obtain the cross-linked water-based asphalt coating;
wherein step III) is an optional step.
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