Highly viscous anti-slip waterproof coating and preparation method thereof

Abstract

The application relates to the technical field of waterproof coatings, and particularly discloses a high-adhesion anti-slippage waterproof coating and a preparation method thereof. The high-adhesion anti-slippage waterproof coating comprises the following raw materials in parts by weight: 30-50 parts of water-based acrylic resin; 20-30 parts of emulsified asphalt; 0.2-0.6 parts of a dispersing agent; 0.1-0.5 parts of a defoaming agent; 2-5 parts of a film-forming aid; and 20-30 parts of colloidal microspheres. The preparation method comprises the following steps: mixing, stirring and agitating the water-based acrylic resin, the colloidal microspheres, the dispersing agent and the defoaming agent for 20-25 minutes to obtain a mixture; and adding the emulsified asphalt, the film-forming aid and a drier into the mixture, stirring and agitating for 10-20 minutes to obtain the waterproof coating. The high-adhesion anti-slippage waterproof coating can be used for waterproof construction of a vertical base surface, and has the advantages of anti-slippage and high waterproofness.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of waterproof coatings, and more particularly to a high-adhesion anti-slippage waterproof coating and a preparation method thereof. BACKGROUND

[0002] Waterproof coating refers to a coating capable of preventing rainwater or underground water from seeping through a coating film formed by the coating. The waterproof film formed by the waterproof coating after curing has certain extensibility, elastic-plasticity, crack resistance, impermeability and weather resistance, and can play a waterproof, anti-seepage and protective role.

[0003] At present, relevant waterproof coatings such as Chinese Patent No. CN116396667B disclose a green waterproof coating and a preparation method thereof. The green waterproof coating comprises two components by weight fraction as follows: the first component comprises 60-100 parts of water-based epoxy resin emulsion, 18-30 parts of filler, 0.5-1 part of dispersing agent, 0.3-0.8 part of defoaming agent, 1.2-2 parts of leveling agent and 20-30 parts of deionized water; the second component comprises 30-50 parts of water-based curing agent and 10-20 parts of deionized water; wherein the weight ratio of the first component to the second component is 1:1.

[0004] In the relevant waterproof coating, a large amount of water is added as a diluent, which causes the coating to slip when used, especially when the coating is applied to a vertical surface. Due to the influence of gravity, the surface of part of the wet film will slip from top to bottom before the wet film dries, which is likely to cause uneven flow marks or a thicker lower edge of the coating film, directly affecting the appearance quality of the coating film and the protective performance of the coating layer. Therefore, the above-mentioned situation of the coating needs to be improved. SUMMARY

[0005] In order to improve the anti-slippage property of the waterproof coating, the application provides a high-adhesion anti-slippage waterproof coating and a preparation method thereof.

[0006] In the first aspect, the application provides a high-adhesion anti-slippage waterproof coating, which adopts the following technical scheme:

[0007] A high-adhesion anti-slippage waterproof coating comprises the following raw materials by weight fraction:

[0008] 30-50 parts of water-based acrylic resin;

[0009] 20-30 parts of emulsified asphalt;

[0010] 0.2-0.6 parts of dispersing agent;

[0011] 0.1-0.5 parts of defoaming agent;

[0012] 2-5 parts of film-forming aid;

[0013] Colloidal microspheres 20-30 parts.

[0014] By adopting the above technical scheme, the water-based acrylic resin is used as the main film-forming material, and the colloidal microspheres are added to form a complete and continuous paint film during the curing process of the paint. The addition of the colloidal microspheres helps to promote the formation of a more dense paint film, thereby improving the adhesion of the waterproof coating to the base layer and reducing the occurrence of sliding or sagging. The three-dimensional structure provided by the colloidal microspheres in the colloidal microspheres further enhances the stability of the paint film, and the waterproof coating is not prone to precipitation during storage. Without adding a large amount of diluent, the waterproof coating can ensure good dispersibility and stability.

[0015] The use of colloidal microspheres with water-based acrylic resin helps to accelerate the rapid curing of waterproof coatings, improve the drying rate, and thereby reduce the occurrence of sliding or sagging of the paint film due to long-term difficulty in drying.

[0016] The addition of functional additives such as emulsified asphalt, dispersants, and defoamers makes the waterproof coating have good anti-sliding property, waterproofness, and mechanical properties.

[0017] Preferably, the following raw materials are included in the following weight fractions:

[0018] Water-based acrylic resin 35-45 parts;

[0019] Emulsified asphalt 23-27 parts;

[0020] Dispersant 0.3-0.5 parts;

[0021] Defoamer 0.2-0.4 parts;

[0022] Film-forming aid 3-4 parts;

[0023] Colloidal microspheres 22-27 parts.

[0024] By adopting the above technical scheme, by optimizing the ratio of each component in the waterproof coating, the anti-sliding property, waterproofness, and mechanical properties of the waterproof coating are further improved.

[0025] Preferably, the colloidal microspheres are prepared by the following method:

[0026] A1: Disperse 2-3 parts of ammonium persulfate in 90-100 parts of deionized water, add opal powder 20-30 parts, ultrasonic dispersion for 30-40 min, filter, dry, and obtain a powder for standby;

[0027] A2: 90-100 parts of styrene monomer is dispersed in anhydrous ethanol, the powder prepared in A1 is added, heated to 80-90℃ in a constant temperature water bath, the stirring speed is controlled at 1800r / min-2000r / min, after 6h of reaction, washing, suction filtration and drying are performed to obtain colloidal microspheres.

[0028] By adopting the above technical scheme, the opal powder is a hydrous amorphous active silicon dioxide, with the decrease of the water content, the hardness is enhanced, which is beneficial to the formation of colloidal microspheres with certain strength and good stability; the styrene monomer is subjected to polymerization reaction under the initiation of ammonium persulfate, and since the ammonium persulfate is first adsorbed on the opal powder, the polymerization reaction process occurs on the surface of the opal powder, forming colloidal microspheres containing polystyrene and opal powder, which not only helps to reduce the sliding or sagging phenomenon of the stable and adhesive paint film, and when the colloidal microspheres are uniformly dispersed and arranged on the surface of the paint film in the process of paint film curing, a plurality of convex microstructures are formed on the surface of the paint film, and the hardness of the opal powder can provide support for the convex microstructure, when the water contacts the convex microstructure on the surface of the paint film, the two are in point contact, thereby improving the waterproofness of the waterproof paint.

[0029] Preferably, the particle size of the colloidal microspheres is 60-80 microns.

[0030] By adopting the above technical scheme, when the particle size of the colloidal microspheres is in this range, it can better be compounded with other raw materials to form a complete and continuous paint film, ensuring rapid drying of the paint film, and at the same time forming a dense convex microstructure on the surface of the paint film, improving the anti-sliding property and waterproofness of the waterproof paint, thereby prolonging the service life of the waterproof paint film.

[0031] Preferably, 2-4 parts of a drier is further added to the waterproof paint, and the drier is peppermint oil.

[0032] By adopting the above technical scheme, the peppermint oil has good compatibility with the colloidal microspheres, and the volatilization of the peppermint oil helps to further accelerate the rapid curing of the waterproof paint film, reduce the displacement of the colloidal microspheres after being coated on the surface of the base layer, promote the waterproof paint to quickly form a hydrophobic microstructure paint film, reduce the sliding or sagging phenomenon, and accelerate the rapid curing and drying of the paint film, thereby improving the construction efficiency.

[0033] Preferably, the film-forming aid is dodecanol ester.

[0034] By adopting the above technical scheme, the dodecanol ester helps the film formation of the waterproof paint, reduces the sliding or sagging phenomenon of the waterproof paint coated on the vertical base layer, and enhances the adhesion of the waterproof paint on the surface of the base layer.

[0035] Preferably, the aqueous acrylic resin is a styrene-acrylic emulsion, the dispersing agent is methyl acrylate, and the defoaming agent is polydimethylsiloxane.

[0036] By adopting the above technical scheme, the waterproof coating made of the styrene-acrylic emulsion has the advantages of good adhesion and good water resistance, the methyl acrylate as the dispersing agent is beneficial to the uniform dispersion and mixing of the raw materials in the waterproof coating, the polydimethylsiloxane plays a defoaming role and has good chemical stability, and thus is beneficial to the preparation of the stable waterproof coating.

[0037] In a second aspect, the application provides a preparation method of high-adhesion anti-slippage waterproof coating, which adopts the following technical scheme:

[0038] The preparation method of the high-adhesion anti-slippage waterproof coating comprises the following steps:

[0039] S1, mixing and stirring the aqueous acrylic resin, the colloidal microspheres, the dispersing agent, and the defoaming agent for 20-25 minutes to obtain a mixture;

[0040] S2, adding the emulsified asphalt, the film-forming aid, and the drier into the mixture and stirring for 10-20 minutes to obtain the waterproof coating.

[0041] By adopting the above technical scheme, when the waterproof coating is coated on the surface of the base layer, the aqueous acrylic resin and the colloidal microspheres form a dense and continuous paint film, the addition of the emulsified asphalt further enhances the density and adhesion of the paint film, enhances the adhesion of the waterproof coating on the surface of the base layer, reduces the slippage or sagging phenomenon of the waterproof coating, the drier accelerates the curing of the paint film, further reduces the displacement of the colloidal microspheres, and as the curing of the coating proceeds, the colloidal microspheres form a raised microstructure on the surface of the paint film, further enhancing the waterproofness of the waterproof coating and reducing the situation that water stays on the surface of the paint film and causes erosion to the paint film.

[0042] In summary, the application has the following beneficial effects:

[0043] 1. Since the application adopts colloidal microspheres, the addition of the colloidal microspheres can form an intact and continuous paint film during the curing process of the coating, and the addition of the colloidal microspheres helps to promote the formation of a more dense paint film, thereby improving the adhesion of the waterproof coating to the base layer and reducing the occurrence of slippage or sagging phenomenon; the three-dimensional structure provided by the colloidal microspheres in the colloidal microspheres further enhances the stability of the paint film, and the waterproof coating is not prone to precipitation during storage, and can ensure good dispersibility and stability of the waterproof coating without adding a large amount of diluent.

[0044] 2, Preferably, the mint oil is used in the application, the mint oil has good compatibility with the colloidal microspheres, the volatilization of the mint oil helps to quickly cure the waterproof coating film, reduces the displacement of the colloidal microspheres after being coated on the surface of the base layer, promotes the waterproof coating to quickly form a hydrophobic microstructure film, reduces the occurrence of slip or sagging, and accelerates the quick curing and drying of the film, and improves the construction efficiency.

[0045] 3, The method of the application, by mixing and stirring the water-based acrylic resin, colloidal microspheres, dispersing agent and defoaming agent for 20-25 minutes to obtain a mixture; adding emulsified asphalt, film forming aid and drying catalyst to the mixture and stirring for 10-20 minutes to obtain a waterproof coating, thus obtaining the effects of anti-slip, good waterproofness and strong mechanical properties. DETAILED DESCRIPTION

[0046] Raw material sources:

[0047] All raw materials in the embodiments of the application can be obtained through market purchase, and the following raw material sources are disclosed only for full disclosure, and should not limit the protection scope.

[0048] The emulsified asphalt is an anionic emulsified asphalt;

[0049] The benzene propyl emulsion has a CAS number of 25085-34-1 and a molecular weight of 176.212;

[0050] The ammonium persulfate has a CAS number of 7727-54-0;

[0051] The opal powder has an average particle size of 30-40 microns and is an amorphous siliceous mineral, and the main component is SiO2·nH2O;

[0052] The mint oil has a CAS number of 68917-18-0;

[0053] The dodecanol ester has a CAS number of 25265-77-4;

[0054] The methyl acrylate has a CAS number of 96-33-3;

[0055] The polydimethylsiloxane has a CAS number of 107-46-0;

[0056] The castor oil has a CAS number of 8001-79-4.

[0057] Preparation example

[0058] Preparation examples 1.1-1.3

[0059] A colloidal microsphere includes the following preparation steps:

[0060] A1: 2-3 kg of ammonium persulfate is dispersed in 90-100 kg of deionized water, 20-30 kg of opal powder is added, ultrasonic dispersion is performed for 30 min, filtration and drying are performed to obtain a powder, which is reserved for use;

[0061] A2: 90-100 kg of styrene monomer is dispersed in 250 kg of anhydrous ethanol, the powder prepared in A1 is added, constant temperature water bath heating is performed to 85℃, the stirring speed is controlled to 2000 r / min, after reaction for 6 h, washing, suction filtration and drying are performed to obtain the colloidal microspheres, and the particle size of the colloidal microspheres is 60 microns.

[0062] The amounts of raw materials used in preparation examples 1.1-1.3 are shown in Table 1.

[0063] Table 1: Amounts of raw materials used in preparation examples 1.1-1.3 (unit: kg)

[0064] Example 1.1 Example 1.2 Example 1.3 Ammonium persulfate 2 2.5 3 Deionized water 90 95 100 Opal 20 25 30 Styrene 90 95 100

[0065] The colloidal microspheres prepared by using the above-mentioned proportions all have good stability and can be used in the preparation of waterproof coatings.

[0066] Preparation example 2

[0067] A kind of colloidal microspheres, and the difference from preparation example 1.2 is that equal amount of diatomite replaces opal powder.

[0068] Comparative preparation example 1

[0069] A kind of colloidal microspheres, and the difference from preparation example 1.2 is that the amount of opal powder is 0 kg.

[0070] Example

[0071] Examples 1.1-1.5

[0072] A high-viscosity anti-slippage waterproof coating, comprising the following amounts of raw materials:

[0073] 30-50 kg of water-based acrylic resin;

[0074] 20-30 kg of emulsified asphalt;

[0075] 0.2-0.6 kg of dispersant;

[0076] 0.1-0.5 kg of defoaming agent;

[0077] 2-5 kg of film-forming aid;

[0078] 20-30 kg of colloidal microspheres;

[0079] The preparation method comprises the following steps:

[0080] S1, mix the water-based acrylic resin, colloidal microspheres, dispersant and defoaming agent for 20-25 minutes to obtain a mixture;

[0081] S2, add emulsified asphalt and film-forming aid to the mixture and stir for 10-20 minutes to obtain a waterproof coating.

[0082] The colloidal microspheres are from Preparation Example 1.1, the water-based acrylic resin is a styrene-acrylic emulsion, the dispersant is methyl acrylate, the defoaming agent is polydimethylsiloxane, and the film-forming aid is dodecanol ester.

[0083] The raw materials for the waterproof coatings of Examples 1.1-1.5 are as shown in Table 2.

[0084] Table 2: Raw material usage (in kg) for the waterproof coatings of Examples 1.1-1.5

[0085]

[0086]

[0087] Examples 2.1-2.4

[0088] A high-viscosity anti-slippage waterproof coating, which differs from Example 1.3 in that the colloidal microspheres have different particle sizes;

[0089] The colloidal microspheres of Example 2.1 have a particle size of 70 microns;

[0090] The colloidal microspheres of Example 2.2 have a particle size of 80 microns;

[0091] The colloidal microspheres of Example 2.3 have a particle size of 40 microns;

[0092] The colloidal microspheres of Example 2.4 have a particle size of 100 microns.

[0093] Example 3

[0094] A high-viscosity anti-slippage waterproof coating, which differs from Example 1.3 in that the colloidal microspheres are prepared according to Preparation Example 2.

[0095] Examples 4.1-4.3

[0096] A high-viscosity anti-slippage waterproof coating, which differs from Example 1.3 in that a drying agent is also added, with a usage of 2-4 kg, and the drying agent is peppermint oil.

[0097] The preparation method comprises the following steps:

[0098] S1, mix the water-based acrylic resin, colloidal microspheres, dispersant and defoaming agent for 20 minutes at a stirring rate of 1000 r / min to obtain a mixture;

[0099] S2, the emulsified asphalt, film forming aid and the drier were added into the mixture and stirred for 15 minutes at a stirring rate of 600 r / min to obtain the waterproof coating.

[0100] The amount of the drier used in Example 4.1 was 2 kg;

[0101] The amount of the drier used in Example 4.2 was 3 kg;

[0102] The amount of the drier used in Example 4.3 was 4 kg.

[0103] Example 5

[0104] A high-viscosity anti-slippage waterproof coating, which was different from Example 4.2 in that the same amount of castor oil was used to replace the peppermint oil.

[0105] Comparative Example

[0106] Comparative Example 1

[0107] A high-viscosity anti-slippage waterproof coating, which was different from Example 1.3 in that the colloidal microspheres were prepared according to the preparation method in Comparative Preparation Example 1.

[0108] Comparative Example 2

[0109] A high-viscosity anti-slippage waterproof coating, which was different from Example 1.3 in that the amount of the colloidal microspheres was 0 kg.

[0110] Performance detection test

[0111] The test included:

[0112] 1. Anti-slippage performance test

[0113] The waterproof coatings prepared according to Examples 1-5 and Comparative Examples 1-2 were coated on test panels at a film thickness of 1.5 mm, and the test panels were vertically placed at room temperature of 25°C. The wet film flow phenomenon was observed, and the flow distance of the wet film on the vertical surface was measured. The flow distance = the width after flowing on the vertical surface - the width initially coated on the vertical surface. The greater the flow distance, the worse the anti-slippage performance.

[0114] 2. Drying performance test

[0115] The waterproof coatings prepared according to Examples 1-5 and Comparative Examples 1-2 were coated on test panels at a film thickness of 1.5 mm, and the surface dry time and the real dry time were tested at room temperature of 25°C, respectively.

[0116] 3. Waterproof effect test

[0117] The waterproof coatings prepared from Examples 1.1-1.5, Example 3 and Comparative Examples 1-2 were cured and then subjected to aging treatment, and after immersion in water for 7 days, the impermeability was tested according to the method specified in GB / T 16777.

[0118] The test results are shown in Table 3.

[0119] Table 3 Test results of Examples 1-5 and Comparative Examples 1-2

[0120]

[0121]

[0122] It can be seen from Examples 1.1-1.5 and Comparative Example 2 in combination with Table 3 that the slip resistance, waterproofness and drying effect of Examples 1.1-1.5 are all superior to those of Comparative Example 2, indicating that the addition of colloidal microspheres in the present application can form a complete and continuous paint film during the curing process of the coating, and the addition of colloidal microspheres helps to promote the formation of a more dense paint film, thereby improving the adhesion of the waterproof coating to the base layer and reducing the occurrence of slip or sagging phenomenon; the three-dimensional structure provided by the colloidal microspheres in the colloidal microspheres further enhances the stability of the paint film, and the waterproof coating is not prone to precipitation during storage, and under the condition of not adding a large amount of diluent, the waterproof coating can ensure good dispersibility and stability;

[0123] It can be seen from Examples 1.3 and Examples 2.1-2.4 in combination with Table 3 that Examples 1.3 and Examples 2.1-2.2 are all superior to Examples 2.3-2.4, indicating that when the particle size of the colloidal microspheres in the present application is in the range of 60-80 microns, it can better be compounded with other raw materials to form a complete and continuous paint film, and at the same time form a dense raised microstructure on the surface of the paint film, thereby improving the slip resistance and waterproofness of the waterproof coating and prolonging the service life of the paint film of the waterproof coating.

[0124] It can be seen from the combination of Example 1.3, Example 3 and Comparative Example 1 and Table 3 that Example 1.3 is superior to Example 3 and Comparative Example 1, which shows that the opal powder added in the present application is a kind of active silicon dioxide with water-containing amorphous state, and with the decrease of water content, the hardness is increased, which is beneficial to the formation of colloidal microspheres with certain strength and good stability; the styrene monomer is subjected to polymerization reaction under the initiation of ammonium persulfate, and at the same time, due to the adsorption of ammonium persulfate on the opal powder first, the polymerization reaction process occurs on the surface of the opal powder, forming colloidal microspheres containing polystyrene and opal powder, which not only helps to reduce the sliding or sagging phenomenon of the paint film with stable and strong adhesion, and when the colloidal microspheres are uniformly dispersed and arranged on the surface of the paint film during the film-forming and curing process of the coating, a plurality of convex microstructures are formed on the surface of the paint film, and the hardness of the opal powder can provide support for the convex microstructure, when the external moisture contacts the convex microstructure on the surface of the paint film, the point contact between them, thereby improving the water resistance of the waterproof coating.

[0125] It can be seen from the combination of Example 1.3 and Example 4.1-4.3, Example 5 and Table 3 that the anti-sliding and drying effect of Example 4.1-4.3 is superior to Example 1.3, which shows that the volatilization of peppermint oil helps to accelerate the curing of the waterproof coating film, reduces the displacement of the colloidal microspheres after being coated on the surface of the base layer, promotes the rapid formation of the hydrophobic microstructure paint film of the waterproof coating, reduces the sliding or sagging phenomenon, and accelerates the rapid curing and drying of the paint film, thereby improving the construction efficiency.

[0126] The specific embodiments are only an explanation of the present application, and are not a limitation of the present application, and those skilled in the art can make modifications to the embodiments without creative contribution after reading the present specification, but as long as the modifications are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A high-viscosity, anti-slip, and waterproof coating, characterized in that, The ingredients include the following parts by weight: 30-50 parts of water-based acrylic resin; 20-30 parts of emulsified asphalt; Dispersant 0.2-0.6 parts; 0.1-0.5 parts of defoamer; 2-5 parts of film-forming aid; 20-30 parts of colloidal microspheres; 2-4 parts of drying agent; The colloidal microspheres have a particle size of 60-80 micrometers; The drying agent is peppermint oil; The colloidal microspheres are prepared by the following steps: A1: Disperse 2-3 parts of ammonium persulfate in 90-100 parts of deionized water, add 20-30 parts of opal powder, ultrasonically disperse for 30-40 minutes, filter, dry to obtain powder, and set aside. A2: Disperse 90-100 parts of styrene monomer in anhydrous ethanol, add the powder obtained in A1, heat in a constant temperature water bath to 80-90℃, control the stirring rate at 1800r / min-2000r / min, react for 6 hours, then wash, filter and dry to obtain colloidal microspheres.

2. The high-viscosity, anti-slip, and waterproof coating according to claim 1, characterized in that, The ingredients include the following parts by weight: 35-45 parts of water-based acrylic resin; 23-27 parts of emulsified asphalt; Dispersant 0.3-0.5 parts; Defoamer 0.2-0.4 parts; 3-4 parts of film-forming aid; 22-27 parts of colloidal microspheres.

3. The high-viscosity, anti-slip, and waterproof coating according to claim 1, characterized in that, The film-forming aid is a dodecyl alcohol ester.

4. The high-viscosity, anti-slip, and waterproof coating according to claim 1, characterized in that, The aqueous acrylic resin is a styrene-acrylic emulsion, the dispersant is methyl acrylate, and the defoamer is polydimethylsiloxane.

5. A method for preparing a high-viscosity, anti-slip, and waterproof coating according to any one of claims 1-4, characterized in that, Includes the following steps: S1. Mix and stir the water-based acrylic resin, colloidal microspheres, dispersant and defoamer for 20-25 minutes to obtain the mixture; S2. Add emulsified asphalt, film-forming aid and drying agent to the mixture and stir for 10-20 minutes to obtain waterproof coating.

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