CN113969088A - Matte anti-contamination outer wall waterproof coating and preparation method and use method thereof - Google Patents
Matte anti-contamination outer wall waterproof coating and preparation method and use method thereof Download PDFInfo
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- CN113969088A CN113969088A CN202111216298.6A CN202111216298A CN113969088A CN 113969088 A CN113969088 A CN 113969088A CN 202111216298 A CN202111216298 A CN 202111216298A CN 113969088 A CN113969088 A CN 113969088A
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- 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
- C09D133/00—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 only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- 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
- C09D7/42—Gloss-reducing agents
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention belongs to the field of waterproof coatings, and particularly relates to a matte anti-contamination outer wall waterproof coating, and a preparation method and a use method thereof. The matte anti-contamination outer wall waterproof coating comprises the following raw materials: pure acrylic emulsion, delustering agent, hydrophobic agent and water. The invention solves the problems that when the non-matte transparent waterproof paint for the outer wall is used for brushing different base materials, the formed film is bright, the light reflection rate of a base layer is improved, the appearance state of a building is changed, and light pollution is caused. After the matting agent is added, the light reflectivity of the product is changed, the light reflectivity is basically kept unchanged after the matting agent is coated on a matte wall surface, and the building outer wall can be repaired without traces.
Description
Technical Field
The invention belongs to the field of waterproof coatings, and particularly relates to a matte anti-contamination outer wall waterproof coating as well as a preparation method and a use method thereof.
Background
The buildings can be damaged and aged in different forms along with the lapse of time due to the internal and external environments or artificial action in the service process, so that the leakage of the outer walls of the buildings and the leakage of indoor balconies, toilets, kitchens and other parts can be caused, and the normal life of residents can be influenced in serious cases. In the case of leakage from the outer wall of a building, the main cause is the occurrence of cracks in the protective layer. Therefore, the maintenance and protection of buildings can be realized at the lowest cost by using the waterproof coating which is in a transparent state after film forming. It is required that the transparent waterproof coating has excellent weather resistance and stain resistance, and a certain matte effect is required when the transparent waterproof coating is used on a non-reflective base layer, so that the transparent waterproof coating is consistent with the appearance of the base layer, cracks can be effectively repaired, and the original appearance state of a building can be prevented from being influenced. On the other hand, it is also necessary to prevent excessive light pollution from being generated and affecting the visual effect.
At present, most of transparent waterproof coatings for exterior walls on the market are prepared from styrene-acrylic emulsion or pure acrylic emulsion, and although the transparent waterproof coatings have a waterproof effect, a plurality of short plates exist, such as bright films formed by coating, and poor water resistance, weather resistance and stain resistance. The main body is as follows: 1) the coating film has bright surface and smooth film formation, is used on the surface of a matte building to easily influence the appearance, changes the light scattering effect of the building surface to cause light to be refracted, causes light pollution, influences the building appearance and causes physical and psychological damage. 2) The painted wall surface has poor stain resistance, and a large amount of dust adheres to the surface after being exposed in the air for a long time. 3) The styrene-acrylic emulsion is used as the main raw material of the transparent waterproof coating for the outer wall, and no treatment is carried out, so that the weather resistance is poor, the coating film is yellow, and the original color of a building is changed.
Disclosure of Invention
Based on the records in the background art, the transparent exterior wall waterproof coating not only has a waterproof effect, but also needs to have certain matte property and transparency, and the color of a building is not changed after the transparent exterior wall waterproof coating is coated on the exterior wall of the building; the paint has certain viscosity and flexibility, has good film forming state, can fill up building cracks, has small influence on the flexibility by temperature, and does not cause paint film brittleness, fracture and pulverization due to too low temperature; the weather resistance is good, and the color of the coating is not changed and hardened due to long-term wind blowing and sunshine; the water-based cleaning agent also needs to have good stain resistance, which is mainly characterized by having a hydrophobic effect, and the surface stains can be cleaned as new after being washed by rainwater.
The invention aims to solve the problems recorded in the background technology, and provides a matte transparent exterior wall waterproof coating for the surface of an exterior wall of a building, which can be used for the surfaces of cement wall surfaces, stone-like paints, real stone paints, matte bricks and the like, has certain matte characteristics besides waterproof effect, colorless transparency and the like, does not influence the appearance of the building, has good weather resistance and stain resistance, and solves the problems of light reflection, brush leakage, wall surface discoloration and stain caused by coating an exterior wall waterproof film.
In order to achieve the above object, a first aspect of the present invention provides a matte anti-staining exterior wall waterproof coating, which comprises the following raw materials:
900 parts of pure acrylic emulsion, 10-40 parts of flatting agent, 10-100 parts of hydrophobic agent and 500 parts of water;
the flatting agent is polyethylene wax emulsion grafted with methyl methacrylate monomer;
the hydrophobic agent is fluorinated polysiloxane.
According to the invention, the polyethylene wax emulsion grafted with the methyl methacrylate monomer can effectively increase the roughness of the film forming surface and effectively improve the extinction performance. The appearance of the polyethylene wax emulsion grafted with the methyl methacrylate monomer is grey white emulsion, the particle size of wax particles is between several microns and dozens of microns, and a steric hindrance effect is generated by means of a nonionic or anionic emulsifier to obtain a stable system. In the water-based paint, a layer of film can be formed on the surface of a paint film, so that the effects of extinction and scratch resistance are achieved, the water resistance of the paint film can be improved, and dust adhesion is reduced.
According to the invention, oxygen atoms in siloxane groups in the fluorinated polysiloxane are directionally arranged on the surface of the base material, the outer layer is chain fluorinated alkyl connected with silicon atoms, the surface energy of the fluorinated polysiloxane and the base layer is reduced, a super-hydrophobic interface with a certain self-repairing function is formed, and the wear resistance is improved. The higher the hydrophobic alkyl content is, the stronger the hydrophobic effect is, the obtained hydrophobic agent has higher durability and long-term hydrophobicity on neutral and alkaline substrates, and can be used as an impregnant and an additive to prevent external water from permeating into the building material. The introduction of polar groups can also reduce the contact angle of an interface, improve the surface wettability with a base layer and improve the adhesive force of finish paint.
In the invention, the water-based self-extinction pure acrylic emulsion is synthesized by hydrosilylation reaction modification and in-situ copolymerization. Due to the introduction of the organic siloxane chain segment, organic silicon is enriched on the surface of the emulsion during film forming, the roughness is improved, and the semi-matte film forming characteristic is presented. The obtained water-based self-extinction acrylic emulsion has proper glass transition temperature, excellent temperature discoloration resistance, water-white resistance and stain resistance, and has the remarkable characteristics of high adhesive strength on various substrates and the like.
Preferably, the raw material composition of the matte anti-contamination exterior wall waterproof coating also comprises at least one of the following components:
0-5 parts of defoaming agent, 0-2 parts of bactericide, 0-10 parts of thickening agent and 0-3 parts of pH regulator;
the defoaming agent is more preferably 0.5 to 5 parts by weight, and the bactericide is more preferably 0.1 to 2 parts by weight.
According to the present invention, the skilled person can select whether to add the antifoaming agent, the bactericide, the thickener and the pH adjuster according to the needs, and the antifoaming agent, the thickener and the pH adjuster may be auxiliary agents conventionally used by the skilled person, and the amounts thereof may be adjusted according to the needs, and are preferably within the above ranges.
As a preferable scheme, in the raw material composition of the matte anti-contamination outer wall waterproof coating, the glass transition temperature of the acrylic emulsion is 10-20 ℃.
Preferably, in the raw material composition of the matte anti-staining exterior wall waterproof coating, the defoaming agent is at least one selected from an organic silicon defoaming agent, a mineral oil defoaming agent and a polyether defoaming agent.
As a preferable scheme, in the raw material composition of the matte anti-contamination outer wall waterproof coating, the particle size of the flatting agent is 5-50 microns.
Preferably, in the raw material composition of the matte anti-staining exterior wall waterproof coating, the bactericide is at least one selected from isothiazolinone bactericides, bronopol bactericides and quaternary ammonium salt bactericides.
Preferably, in the raw material composition of the matte anti-staining exterior wall waterproof coating, the thickening agent is at least one selected from alkali swelling polyurethane thickening agents and hydrophobic modified non-polyurethane thickening agents.
Preferably, in the raw material composition of the matte anti-staining exterior wall waterproof coating, the pH regulator is ethanolamine regulator and/or AMP-95.
The second aspect of the present invention provides a preparation method of the matte anti-contamination exterior wall waterproof coating, wherein the preparation method comprises the following steps: and uniformly mixing the components to obtain the matte anti-contamination outer wall waterproof coating.
The third aspect of the present invention provides a method for using the above matte anti-staining exterior wall waterproof coating, the method comprising:
case 1: plugging cracks larger than or equal to 3mm, and directly brushing and/or rolling and/or spraying;
case 2: plugging cracks smaller than 3mm, adding water to dilute, and brushing and/or rolling and/or spraying. If the amount of water added later can be 10-50% of the original material, then the spraying construction is carried out.
The invention has the beneficial effects that:
1. the invention solves the problems that when the non-matte transparent waterproof paint for the outer wall is used for brushing different base materials, the formed film is bright, the light reflection rate of a base layer is improved, the appearance state of a building is changed, and light pollution is caused. After the matting agent is added, the light reflectivity of the product is changed, the light reflectivity is basically kept unchanged after the matting agent is coated on a matte wall surface, and the building outer wall can be repaired without traces.
2. The invention provides a matte anti-contamination transparent waterproof coating for an exterior wall of a building and a preparation method thereof, and mainly solves the problems of yellowing, cracking and falling caused by poor weather resistance of the existing exterior wall transparent waterproof coating in the application process, and the influence on building attractiveness caused by wall surface contamination caused by contamination dust.
3. The invention improves the hydrophobicity of the transparent exterior wall waterproof coating, prevents external rainwater from invading the interior of a building, and improves the waterproof effect and the stain resistance of the building on the premise of not changing the appearance color of the building.
4. The invention has simple manufacture, environmental protection and no pollution, can be applied in mass production and has practicability.
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 table 1:
1. 6567 the emulsion is a pure acrylic emulsion having a glass transition temperature of 20 deg.C.
2. The 263 emulsion is a composite wax emulsion matting agent from BYK, germany.
3. SG-4552 is a silicone/paraffin oil/alcohol ether complex defoamer from Astrond, USA.
4. 1200 is a fluorinated polysiloxane hydrophobe from degussigoo.
5. U508 is a common alkali-swellable polyurethane-type thickener.
6. AMP-95 is a multifunctional adjuvant from the Dow company and is used to adjust the pH of the product.
7. 1209 is an isothiazolinone/bronopol, THOR, British Tol Acticide _ LA1209 fungicide.
TABLE 1
The preparation method comprises the following steps:
preparing the raw materials according to a formula, adding water, half of the defoaming agent, the bactericide and the thickening agent into a liquid material stirring cylinder, stirring at 600rpm for 10min, adding AMP-95 into the liquid material stirring cylinder, stirring for 15min while keeping the rotating speed unchanged, sequentially adding the rest defoaming agent, the hydrophobic agent, the flatting agent and the emulsion into the liquid material stirring cylinder, stirring for 15min together to obtain a liquid material, and packaging.
The using method comprises the following steps:
case 1: plugging cracks larger than or equal to 3mm, and directly brushing and/or rolling and/or spraying;
case 2: plugging cracks smaller than 3mm, adding water to dilute, and brushing and/or rolling and/or spraying. If the amount of water added later can be 10-50% of the original material, then the spraying construction is carried out.
The test results of the waterproof coatings obtained in the above examples and comparative examples are as follows:
TABLE 2
Wherein, the experimental methods of tensile strength, bonding strength, water impermeability, frost resistance, alkali resistance and heat resistance refer to the experimental method of GB/T16777-2008 building waterproof paint; the stain resistance refers to a GB/T9780-2013 building coating stain resistance test method to respectively test the light reflection coefficient of the surface of the coating, the water-whitening resistance test is carried out according to the GB/T16777-2008 on the basis of 4 high polymer samples, the samples are prepared and maintained, then the samples are immersed in water at the temperature of 23 +/-2 ℃, and the whitening time of the coating film is observed.
As can be seen from comparative example 1, the sample without the addition of the matting agent and the water repellent agent has a strong adhesive strength, but has the worst water whitening resistance and turns white within 2 hours of foaming water, indicating that the sample without the addition of the matting agent and the water repellent agent results in a product having a poor water resistance.
As can be seen from comparative examples 2 and 3, the addition of the flatting agent can obviously improve the light reflection coefficient (matte degree) of the transparent waterproof coating for the exterior wall, namely, the reflection rate of the coating film can be improved, the water-whitening resistance is improved along with the increase of the addition amount, but the whitening phenomenon still occurs within 12 h. In addition, the bond strength can be increased, but the tensile strength is slightly reduced.
As can be seen from comparative examples 4 and 5, only the hydrophobic agent is added into the prepared sample, the water-white resistance of the product can be obviously improved, the bonding strength is enhanced by prolonging the time to 15 days, but the matte degree is reduced to a certain extent due to the introduction of the hydrophobic group.
The matting agent can promote the uniform film formation of the product, and the hydrophobic agent mainly passes through chain-shaped hydrophobic groups. As can be seen from the examples 1, 2 and 3, under the combined action of the delustering agent and the hydrophobic agent, the water-whitening resistance of the product can be obviously improved, and the product has excellent matte property and water-whitening resistance and excellent comprehensive physical property performance.
The comparison of other examples shows that the waterproof coating sample of the outer wall with good water white resistance, stain resistance and matte property can be obtained in the example 2; comparative example 5 gives a product which has a poor matte finish but which has good resistance to water whitening and staining.
The tests in this group all have qualified water impermeability, temperature resistance, freezing resistance, alkali resistance, heat resistance, etc., which shows that the matting agent and the hydrophobing agent have good weather resistance and do not affect the performances of the product, which are determined by the emulsion.
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 (10)
1. The matte anti-contamination outer wall waterproof coating is characterized by comprising the following raw materials:
900 parts of pure acrylic emulsion, 10-40 parts of flatting agent, 10-100 parts of hydrophobic agent and 500 parts of water;
the flatting agent is polyethylene wax emulsion grafted with methyl methacrylate monomer;
the hydrophobic agent is fluorinated polysiloxane.
2. The matte anti-staining exterior wall waterproof coating of claim 1, wherein the raw material composition of the matte anti-staining exterior wall waterproof coating further comprises at least one of the following components:
0-5 parts of defoaming agent, 0-2 parts of bactericide, 0-10 parts of thickening agent and 0-3 parts of pH regulator;
the defoaming agent is preferably 0.5 to 5 parts by weight, and the bactericide is preferably 0.1 to 2 parts by weight.
3. The matte soil resistant exterior wall waterproofing coating according to claim 1,
the glass transition temperature of the pure acrylic emulsion is 10-20 ℃.
4. The matte soil resistant exterior wall waterproofing coating according to claim 2,
the defoaming agent is at least one selected from the group consisting of a silicone defoaming agent, a mineral oil defoaming agent and a polyether defoaming agent.
5. The matte soil resistant exterior wall waterproofing coating according to claim 1,
the particle size of the flatting agent is 5-50 microns.
6. The matte soil resistant exterior wall waterproofing coating according to claim 2,
the bactericide is at least one selected from isothiazolinone bactericides, bronopol bactericides and quaternary ammonium salt bactericides.
7. The matte soil resistant exterior wall waterproofing coating according to claim 2,
the thickener is at least one of alkali swelling polyurethane thickener and hydrophobic modified non-polyurethane thickener.
8. The matte soil resistant exterior wall waterproofing coating according to claim 2,
the pH regulator is ethanolamine regulator and/or AMP-95.
9. The process for preparing a matte anti-staining exterior wall waterproof coating according to any one of claims 1 to 8, which comprises the following steps:
and uniformly mixing the components to obtain the matte anti-contamination outer wall waterproof coating.
10. The method of using the matte soil resistant exterior wall water repellent coating of any one of claims 1-8, wherein the method of using comprises:
case 1: plugging cracks larger than or equal to 3mm, and directly brushing and/or rolling and/or spraying;
case 2: plugging cracks smaller than 3mm, adding water to dilute, and brushing and/or rolling and/or spraying.
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| CN202111216298.6A CN113969088A (en) | 2021-10-19 | 2021-10-19 | Matte anti-contamination outer wall waterproof coating and preparation method and use method thereof |
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| CN202111216298.6A CN113969088A (en) | 2021-10-19 | 2021-10-19 | Matte anti-contamination outer wall waterproof coating and preparation method and use method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640971A (en) * | 2004-11-04 | 2005-07-20 | 深圳市展辰达化工有限公司 | Coloured water-based antibacterial paint for woodenware |
| CN101067062A (en) * | 2007-06-08 | 2007-11-07 | 东莞拓扑实业有限公司 | High performance outer wall paint and its prepn |
| CN104293059A (en) * | 2014-11-10 | 2015-01-21 | 亚士漆(上海)有限公司 | Stain-resistant matte elastic paint |
| CN106700796A (en) * | 2016-12-29 | 2017-05-24 | 三棵树涂料股份有限公司 | High-pollution-resistance matte external-wall elastic paint and preparation method thereof |
-
2021
- 2021-10-19 CN CN202111216298.6A patent/CN113969088A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640971A (en) * | 2004-11-04 | 2005-07-20 | 深圳市展辰达化工有限公司 | Coloured water-based antibacterial paint for woodenware |
| CN101067062A (en) * | 2007-06-08 | 2007-11-07 | 东莞拓扑实业有限公司 | High performance outer wall paint and its prepn |
| CN104293059A (en) * | 2014-11-10 | 2015-01-21 | 亚士漆(上海)有限公司 | Stain-resistant matte elastic paint |
| CN106700796A (en) * | 2016-12-29 | 2017-05-24 | 三棵树涂料股份有限公司 | High-pollution-resistance matte external-wall elastic paint and preparation method thereof |
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