CN116179022A - High-water-resistance polymer modified asphalt waterproof paint and preparation method thereof - Google Patents
High-water-resistance polymer modified asphalt waterproof paint and preparation method thereof Download PDFInfo
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- CN116179022A CN116179022A CN202211684490.2A CN202211684490A CN116179022A CN 116179022 A CN116179022 A CN 116179022A CN 202211684490 A CN202211684490 A CN 202211684490A CN 116179022 A CN116179022 A CN 116179022A
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- 239000010426 asphalt Substances 0.000 title claims abstract description 78
- 239000003973 paint Substances 0.000 title claims abstract description 41
- 229920000642 polymer Polymers 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 52
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 52
- 235000019832 sodium triphosphate Nutrition 0.000 claims abstract description 52
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims abstract description 52
- 238000000576 coating method Methods 0.000 claims abstract description 39
- 239000011248 coating agent Substances 0.000 claims abstract description 36
- 239000002002 slurry Substances 0.000 claims abstract description 35
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000004816 latex Substances 0.000 claims abstract description 10
- 229920000126 latex Polymers 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000002270 dispersing agent Substances 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 14
- 239000002518 antifoaming agent Substances 0.000 claims description 13
- 230000000844 anti-bacterial effect Effects 0.000 claims description 12
- 239000003899 bactericide agent Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 125000000129 anionic group Chemical group 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000004078 waterproofing Methods 0.000 claims description 5
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- 239000013530 defoamer Substances 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002174 Styrene-butadiene Substances 0.000 claims description 2
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- 229920003086 cellulose ether Polymers 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- FGVVTMRZYROCTH-UHFFFAOYSA-N pyridine-2-thiol N-oxide Chemical class [O-][N+]1=CC=CC=C1S FGVVTMRZYROCTH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000011115 styrene butadiene Substances 0.000 claims description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 2
- VUWCWMOCWKCZTA-UHFFFAOYSA-N 1,2-thiazol-4-one Chemical class O=C1CSN=C1 VUWCWMOCWKCZTA-UHFFFAOYSA-N 0.000 claims 1
- 239000012874 anionic emulsifier Substances 0.000 claims 1
- 239000012875 nonionic emulsifier Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 22
- 230000000052 comparative effect Effects 0.000 description 8
- 238000007654 immersion Methods 0.000 description 6
- 230000014759 maintenance of location Effects 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000009472 formulation Methods 0.000 description 5
- 238000002791 soaking Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
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- 238000005303 weighing Methods 0.000 description 2
- JLHMJWHSBYZWJJ-UHFFFAOYSA-N 1,2-thiazole 1-oxide Chemical class O=S1C=CC=N1 JLHMJWHSBYZWJJ-UHFFFAOYSA-N 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000003254 anti-foaming effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011973 solid acid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
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
- C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
- C09D109/06—Copolymers with styrene
- C09D109/08—Latex
-
- 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
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
-
- 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
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/327—Aluminium phosphate
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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to the technical field of waterproof coatings, and particularly relates to a high-water-resistance polymer modified asphalt waterproof coating and a preparation method thereof. The raw materials of the high water-resistant polymer modified asphalt waterproof coating comprise asphalt, water, latex, filler, aluminum tripolyphosphate slurry and an emulsifying agent. The polymer modified asphalt waterproof paint disclosed by the invention has low water absorption rate and excellent water resistance.
Description
Technical Field
The invention belongs to the technical field of waterproof coatings, and in particular relates to a high-water-resistance polymer modified asphalt waterproof coating and a preparation method thereof.
Background
The polymer modified asphalt waterproof paint is prepared by taking polymer modified asphalt as a main film forming substance, taking filler as aggregate and adopting a certain process under the action of an auxiliary agent. The paint has the advantages of convenient construction, good waterproof property and good compatibility with other waterproof paints, thus being accepted by consumers. As the water-based asphalt paint contains more emulsifying agent and other components containing hydrophilic groups, the water absorption rate of the paint is higher, the water absorption rate of the paint can reach 15-30% in 7 days, the material swells after water absorption, the performance of the paint after water immersion is greatly influenced, and the water resistance is one of the important reasons for preventing the water-based asphalt paint from breaking through the technical bottleneck.
Patent documents of asphalt waterproof paint in the prior art also describe that the water absorption rate of asphalt waterproof paint is reduced by a certain means, such as CN110128945A, CN110128946A, CN114410214a, but the water absorption rate of the waterproof paint cannot meet the harsher water absorption rate requirement.
Disclosure of Invention
The invention aims to solve the problem of high water absorption of water-based asphalt paint, further reduce the water absorption, and provide a high-water-resistance polymer modified asphalt waterproof paint and a preparation method thereof, wherein the polymer modified asphalt waterproof paint has excellent water resistance, the water absorption can be reduced to below 3% in 7 days, and the water absorption can be reduced to below 2% in 48 hours.
According to the invention, the aluminum tripolyphosphate is prepared into the aluminum tripolyphosphate slurry, and the aluminum tripolyphosphate slurry is applied to the asphalt waterproof coating, so that the water resistance of the asphalt waterproof coating is effectively improved.
To achieve the above object, a first aspect of the present invention provides a high water-resistant polymer-modified asphalt waterproof coating material, the raw material composition of which comprises, by weight:
10-30 parts of asphalt, 10-20 parts of water, 15-40 parts of latex, 5-30 parts of filler, 4-12 parts of aluminum tripolyphosphate slurry, 0.1-2 parts of emulsifying agent, 0-1.5 parts of defoaming agent, 0-1 part of bactericide and 0-2 parts of thickening agent;
the aluminum tripolyphosphate slurry is prepared by uniformly mixing aluminum tripolyphosphate with water, a dispersing agent and an optional pH regulator, and grinding until the fineness of the slurry is below 30 microns.
The polymer modified asphalt waterproof paint disclosed by the invention has low water absorption rate and excellent water resistance. At present, aluminum tripolyphosphate is mainly applied to metal anti-corrosion paint, and an excellent protective film is generated on the surface of a substrate through iron ions in an aluminum tripolyphosphate chelating base layer, so that the aluminum tripolyphosphate has excellent anti-rust performance. At present, the application of adding the aluminum tripolyphosphate into the asphalt waterproof paint to improve the water resistance of the paint is not available, and compared with the prior art, the aluminum tripolyphosphate is uniformly dispersed in the coating, so that the water absorption of the asphalt paint is greatly improved.
As a preferable scheme, the high water-resistant polymer modified asphalt waterproof paint comprises the following raw materials in parts by weight:
10-20 parts of asphalt, 10-15 parts of water, 20-40 parts of latex, 10-25 parts of filler, 4-10 parts of aluminum tripolyphosphate slurry, 0.5-1.0 part of emulsifier, 0-0.8 part of defoamer and 0-0.6 part of bactericide.
In the preferable scheme, in the raw material composition of the high water-resistant polymer modified asphalt waterproof coating,
0.2-0.8 part of defoaming agent, 0.2-0.6 part of bactericide and 0.3-2 parts of thickener.
As a preferred scheme, the aluminum tripolyphosphate slurry comprises the following raw materials in weight:
50-80 parts of aluminum tripolyphosphate, 20-50 parts of water, 1-5 parts of dispersing agent and 0-1 part of pH regulator.
Preferably, the dispersing agent is at least one selected from anionic dispersing agents, nonionic dispersing agents and amphoteric dispersing agents.
Preferably, the pH regulator is at least one selected from ammonia water and AMP 95.
As a preferred scheme, the preparation method of the aluminum tripolyphosphate slurry comprises the following steps:
and uniformly mixing the pH regulator, optional dispersing agent and water, adding aluminum tripolyphosphate, uniformly mixing, and grinding until the fineness of the slurry is below 30 microns to obtain aluminum tripolyphosphate slurry.
The smaller the fineness is, the more obviously the water resistance of the coating is improved, and as a further preferable scheme, the coating is ground until the fineness of the slurry is below 10 microns. Polymer fractionPolar groups in the sub-chain and dispersant, such as hydroxyl, carboxyl, are the main factors affecting the water absorption of the coating, P in the aluminum tripolyphosphate host molecule 3 O 10 5- The aluminum tripolyphosphate can be complexed with polar groups in the polymer, so that the hydrophilic groups are blocked, the adhesive force of a wet film and the water absorption rate of a later-stage coating are improved, and the smaller the fineness of the aluminum tripolyphosphate is, the higher the complexing capacity of the polar groups is, and the better the water resistance of the coating is.
Preferably, the asphalt is matrix asphalt and/or modified asphalt.
Preferably, the latex is styrene-acrylic emulsion and/or styrene-butadiene emulsion.
Preferably, the filler is at least one selected from dead calcium, silicon micropowder and barium sulfate.
Preferably, the defoaming agent is at least one selected from silicone-based defoaming agents and grease-based defoaming agents.
Preferably, the emulsifier is at least one selected from anionic emulsifiers and nonionic emulsifiers.
Preferably, the bactericide is at least one selected from isothiazolone derivatives and pyrithione derivatives.
Preferably, the thickener is at least one selected from cellulose ether and polyurethane.
The second aspect of the present invention provides a method for preparing the above high water resistant polymer modified asphalt waterproof paint, which comprises:
s1, stirring asphalt to obtain asphalt liquid;
s2, uniformly mixing water with an optional defoamer and an emulsifier to obtain a mixed solution;
s3, uniformly mixing the asphalt liquid and the mixed liquid to obtain emulsified asphalt;
s4, uniformly mixing the emulsified asphalt with latex, filler and optional bactericide, optionally adding a thickening agent, adding aluminum tripolyphosphate slurry in a stirring state, and continuously stirring to obtain the polymer modified asphalt waterproof coating.
The invention has the beneficial effects that:
the polymer modified asphalt is used as the continuous phase of the film forming material, so that the waterproof coating has good barrier property and excellent waterproof effect; preferably, the coarse whiting powder is used as aggregate of film forming matters, is easy to disperse, and plays roles of enhancing and resisting heat in the coating; the emulsifier mainly acts on the surfaces of asphalt and solid particles in the coating, so that the system exists stably; in the preparation, transportation and construction processes, foaming can be avoided in a coating system under the action of mechanical force, and the defoaming agent can effectively play roles in inhibiting foaming and defoaming; the thickener can increase the viscosity of the system, so that the storage stability of the system is ensured, and the sagging resistance of the coating is also increased; the bactericide can kill microorganisms in the system and avoid the phenomenon of reduced performance of the coating due to erosion of the microorganisms on the coating.
The aluminum tripolyphosphate slurry can reduce the water absorption of the coating to below 3%, and the uniformly dispersed aluminum tripolyphosphate finally presents a three-dimensional phosphating net in the dry film, so that the phosphating net is insoluble in water and high in hardness, the water resistance of the whole coating is greatly improved, the aluminum tripolyphosphate has the characteristic of solid acid, can be combined with amino groups on polymer side chains in the coating film forming process, the compactness of the coating is improved, and meanwhile, the pH regulator and other alkaline substances in the system can be adsorbed, so that the water absorption rate is reduced.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
FIG. 1 shows a photograph of the asphalt waterproofing paint obtained in example 4 of the present invention after long-term immersion (30 d).
FIG. 2 shows a photograph of the asphalt waterproofing paint obtained in comparative example 1 of the present invention after long-term immersion (3 d).
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the preferred embodiments of the present invention are described below, it should be understood that the present invention may be embodied in various forms and should not be limited to 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.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The raw materials adopted by the invention are common commercial products in the technical field unless specified otherwise.
In the embodiment of the invention, the parts refer to parts by weight.
Preparation example 1
The aluminum tripolyphosphate slurry comprises 30 parts of water, 0.5 part of pH regulator ammonia water, 5 parts of Crain anionic wetting dispersant and 65 parts of aluminum tripolyphosphate. The preparation method comprises the following steps: dissolving a pH regulator and a wetting dispersant in water, and dispersing for 5min by using a high-speed dispersing machine 300 r/min; slowly adding aluminum tripolyphosphate, increasing the rotating speed of a high-speed dispersing machine to 1000r/min, continuously dispersing for 20min, and uniformly mixing; grinding the dispersed semi-finished product in a horizontal grinder until the fineness is less than 30 microns to obtain aluminum tripolyphosphate slurry 1.
Preparation example 2
The aluminum tripolyphosphate slurry comprises 30 parts of water, 0.5 part of pH regulator ammonia water, 5 parts of Crain anionic wetting dispersant and 65 parts of aluminum tripolyphosphate. The preparation method comprises the following steps: dissolving a pH regulator and a wetting dispersant in water, and dispersing for 5min by using a high-speed dispersing machine 300 r/min; slowly adding aluminum tripolyphosphate, increasing the rotating speed of a high-speed dispersing machine to 1000r/min, continuing to disperse for 20min, uniformly mixing, and obtaining aluminum tripolyphosphate slurry 2, wherein the fineness of the slurry is greater than 150 microns.
Example 1
This example provides a highly water-resistant polymer modified asphalt waterproof paint, the formulation of which is shown in table 1.
TABLE 1
Example 2
This example provides a highly water-resistant polymer modified asphalt waterproof paint, the formulation of which is shown in table 2.
TABLE 2
Example 3
This example provides a highly water-resistant polymer modified asphalt waterproof paint, the formulation of which is shown in table 3.
TABLE 3 Table 3
Example 4
This example provides a highly water resistant polymer modified asphalt waterproof coating with the formulation shown in table 4.
TABLE 4 Table 4
The preparation method of the polymer modified asphalt waterproof paint in the embodiment comprises the following steps:
(1) Weighing the asphalt with the formula amount into a reaction kettle A, heating to 100 ℃, stirring for 10 minutes, and heating to 160 ℃ for later use;
(2) Respectively weighing water, a defoaming agent and an emulsifying agent according to the formula amount, sequentially adding the water, the defoaming agent and the emulsifying agent into a reaction kettle B, and stirring for 30 minutes for later use;
(3) Pumping the reaction kettle A and the reaction kettle B into a colloid mill for emulsification to obtain modified emulsified asphalt;
(4) Sequentially adding the latex, heavy calcium, modified emulsified asphalt and bactericide with the formula amount into a reaction kettle C, adding the thickener with the formula amount to adjust the viscosity of the system to 60KU (stormer viscosity), adding the aluminum tripolyphosphate slurry in a stirring state, and stirring for 40 minutes to obtain a finished product.
Comparative example 1
This comparative example provides a polymer modified asphalt waterproof paint, the formulation of which is shown in table 5.
TABLE 5
Comparative example 2
The difference from example 4 is that aluminum tripolyphosphate slurry 1 was replaced with aluminum tripolyphosphate slurry 2 (slurry fineness of 150 μm or more).
TABLE 6
Comparative example 3
The difference from example 5 is that the aluminum tripolyphosphate slurry is replaced with aluminum tripolyphosphate powder.
TABLE 7
The polymer-modified asphalt waterproof coatings prepared in examples 1 to 4 and comparative examples 1 to 3 were subjected to performance test, and the results are shown in the following table.
TABLE 8
According to the embodiment, the coating of the high water-resistant polymer modified asphalt waterproof coating prepared by the invention has good water resistance, the water absorption rate of soaking for 48 hours is 1.69-4.01%, and the water absorption rate of soaking for 7 days is 2.71-8.71%. Meanwhile, the adhesive strength retention rate of the waterproof asphalt coating after soaking for 7 days is 83.79% -95.2%, the breaking elongation rate of the waterproof asphalt coating after soaking for 7 days is 792% -861%, and the tensile strength retention rate is 77.86% -90.59%, so that the waterproof asphalt coating prepared by the method is good in water resistance.
As is clear from comparative examples 1, 2 and 4, when aluminum tripolyphosphate is not added, the water absorption rate of the coating layer is as high as 14.35% after 7 days of immersion, and the adhesive strength retention rate and the tensile strength retention rate are reduced; when the fineness of the aluminum tripolyphosphate slurry is too large, the water absorption rate of the coating layer after 7 days of soaking is as high as 12.11%, and the adhesive strength retention rate and the tensile strength retention rate are particularly insufficient. The aluminum tripolyphosphate disclosed by the invention has a certain influence on the water resistance of the polymer modified asphalt waterproof coating.
FIG. 1 shows a photograph of the asphalt waterproofing paint obtained in example 4 of the present invention after long-term immersion (30 d). FIG. 2 shows a photograph of the asphalt waterproofing paint obtained in comparative example 1 of the present invention after long-term immersion (3 d).
Comparing fig. 1 and fig. 2, it can be seen that the anti-foaming performance and the water absorption of the coating are obviously improved after the aluminum tripolyphosphate is added.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or 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 various embodiments described.
Claims (10)
1. The high water-resistant polymer modified asphalt waterproof paint is characterized by comprising the following raw materials in parts by weight:
10-30 parts of asphalt, 10-20 parts of water, 15-40 parts of latex, 5-30 parts of filler, 4-12 parts of aluminum tripolyphosphate slurry, 0.1-2 parts of emulsifying agent, 0-1.5 parts of defoaming agent, 0-1 part of bactericide and 0-2 parts of thickening agent;
the aluminum tripolyphosphate slurry is prepared by uniformly mixing aluminum tripolyphosphate with water, a dispersing agent and an optional pH regulator, and grinding until the fineness of the slurry is below 30 microns.
2. The high water resistant polymer modified asphalt waterproof paint according to claim 1, wherein,
10-20 parts of asphalt, 10-15 parts of water, 20-40 parts of latex, 10-25 parts of filler, 4-10 parts of aluminum tripolyphosphate slurry, 0.5-1.0 part of emulsifier, 0-0.8 part of defoamer and 0-0.6 part of bactericide.
3. The high water resistant polymer modified asphalt waterproof paint according to claim 1, wherein,
0.2-0.8 part of defoaming agent, 0.2-0.6 part of bactericide and 0.3-2 parts of thickener.
4. The high water resistant polymer modified asphalt waterproofing coating according to claim 1, wherein the raw material composition of the aluminum tripolyphosphate slurry comprises by weight:
50-80 parts of aluminum tripolyphosphate, 20-50 parts of water, 1-5 parts of dispersing agent and 0-1 part of pH regulator.
5. The high water resistant polymer modified asphalt waterproof paint according to claim 1, wherein,
the dispersing agent is at least one of anionic dispersing agent, nonionic dispersing agent and amphoteric dispersing agent;
the pH regulator is at least one selected from ammonia water and AMP 95.
6. The high water resistant polymer modified asphalt waterproof coating according to claim 1, wherein the preparation method of the aluminum tripolyphosphate slurry comprises the following steps:
and uniformly mixing the pH regulator, optional dispersing agent and water, adding aluminum tripolyphosphate, uniformly mixing, and grinding until the fineness of the slurry is below 30 microns to obtain aluminum tripolyphosphate slurry.
7. The high water resistant polymer modified asphalt waterproof paint according to claim 6, wherein the slurry fineness is 10 μm or less.
8. The high water resistant polymer modified asphalt waterproof paint according to claim 1, wherein,
the asphalt is matrix asphalt and/or modified asphalt;
the latex is styrene-acrylic emulsion and/or styrene-butadiene emulsion;
the filler is at least one selected from dead calcium, silicon micropowder and barium sulfate.
9. The high water resistant polymer modified asphalt waterproof paint according to claim 1, wherein,
the defoaming agent is at least one of an organosilicon defoaming agent and an oil defoaming agent;
the emulsifier is at least one selected from anionic emulsifier and nonionic emulsifier;
the bactericide is at least one selected from isothiazolinone derivatives and pyrithione derivatives;
the thickener is at least one selected from cellulose ether and polyurethane.
10. The method for preparing the high water resistant polymer modified asphalt waterproof paint as claimed in any one of claims 1 to 9, which is characterized in that the method comprises the following steps:
s1, stirring asphalt to obtain asphalt liquid;
s2, uniformly mixing water with an optional defoamer and an emulsifier to obtain a mixed solution;
s3, uniformly mixing the asphalt liquid and the mixed liquid to obtain emulsified asphalt;
s4, uniformly mixing the emulsified asphalt with latex, filler and optional bactericide, optionally adding a thickening agent, adding aluminum tripolyphosphate slurry in a stirring state, and continuously stirring to obtain the polymer modified asphalt waterproof coating.
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