阅读说明：本技术 自清洁材料及其制备方法 (Self-cleaning material and preparation method thereof ) 是由 张守祺 姬振行 路振宝 昂源 刘风波 辛鹏浩 孙烈 于 2019-02-20 设计创作，主要内容包括：提供一种自清洁材料,包括液体组分A、助剂组分B和粉体组分C,其中液体组分A、助剂组分B和粉体组分C质量份数比例分别为(30～44)：(1.5～4)：(17～48)。本发明采用含氟的乳液作为成膜物质之一,含氟的乳液中含有C-F键,在光和热的作用下,C-F键很难断裂,含氟的乳液的涂层具有超长的耐候性,涂层耐腐蚀性能显著。本发明采用含有持久抗菌防霉性的成分,可长效抑制潮湿环境混凝土表面霉菌滋生,达到防霉等级0级。(The self-cleaning material comprises a liquid component A, an auxiliary agent component B and a powder component C, wherein the liquid component A, the auxiliary agent component B and the powder component C are respectively (30-44) in parts by mass: (1.5-4): (17-48). The invention adopts the fluorine-containing emulsion as one of film forming substances, the fluorine-containing emulsion contains C-F bonds, the C-F bonds are difficult to break under the action of light and heat, and the coating of the fluorine-containing emulsion has ultra-long weather resistance and remarkable corrosion resistance. The invention adopts the components with lasting antibacterial and mildew-proof properties, can inhibit the growth of mildew on the concrete surface in a humid environment for a long time and achieves the mildew-proof grade 0.)

1. A self-cleaning material comprises a liquid component A, an auxiliary agent component B and a powder component C, wherein,

the liquid component A comprises:

15-22 parts of emulsion i;

15-22 parts of emulsion ii;

the auxiliary component B comprises:

the powder component C comprises:

the liquid component A, the auxiliary agent component B and the powder component C are respectively (30-44) in parts by mass: (1.5-4): (17-48).

2. The self-cleaning material of claim 1, wherein the emulsion i in the liquid component A is selected from one or more of an aqueous fluorocarbon resin emulsion, an aqueous acrylic modified fluorocarbon resin emulsion, an aqueous polyvinylidene fluoride emulsion, and an aqueous polytetrafluoroethylene emulsion.

3. The self-cleaning material of claim 1, wherein the emulsion ii is selected from one or more of an aqueous acrylic emulsion, an aqueous silicone-modified acrylic emulsion, an aqueous acrylic and styrene copolymer emulsion.

4. The self-cleaning material as claimed in claim 1, wherein said dispersant in said adjuvant component B is one or more selected from anionic carboxylic acid type wetting dispersants, and antifoaming agent is one or more selected from aqueous antifoaming agents.

5. The self-cleaning material of claim 1, wherein the self-cleaning additive in the additive component B is selected from one or more of kemu chemical FS30, kemu chemical FS61, 3M 4430, FCS 003, and winning-original U.S. gas chemical dynal 607.

6. The self-cleaning material of claim 1, wherein the thickener in the adjunct component B is selected from one or more of hydroxyethyl (c) cellulose ether, white carbon, associative aqueous thickeners.

7. Self-cleaning material according to claim 1, wherein said bacteriostatic fungicide isothiazolinone, quaternary ammonium salt, benzimidazole ester fungicide in said adjuvant component B.

8. The self-cleaning material of claim 1, wherein the silica in the powder component C is silica prepared by a gas phase method or a precipitation method, and the particle size of the silica is 800-2000 meshes.

9. The self-cleaning material of claim 1, wherein the titanium dioxide in the powder component C is rutile type, and the particle size is 400-2000 mesh.

10. A method for preparing a self-cleaning material according to any one of claims 1-9, characterized in that it comprises the following steps:

uniformly stirring the powder component C, water and the auxiliary agent component B except the thickening agent to form slurry; and

and uniformly mixing the liquid component A and the slurry, dropwise adding the thickening agent, and uniformly stirring.

Technical Field

The invention relates to the field of protection and self-cleaning of a highway concrete anti-collision wall, in particular to a protective material for keeping the concrete anti-collision wall attractive, antibacterial, mildewproof and self-cleaning.

Background

The concrete anti-collision wall is exposed to the atmosphere and is subjected to the atmospheric environment (SO)₂、CO₂) Water (corrosion, freeze-thaw cycle), chloride and the like inevitably cause the concrete anti-collision wall to crack, corrode, reduce the strength and the like, and influence the appearance and the durability of the concrete.

Aiming at the durability problem of the concrete anti-collision wall, the service life of the concrete is prolonged, and the anti-corrosion coating is coated on the cement concrete anti-collision wall, so that the anti-corrosion coating is an effective means for improving the corrosion resistance of the cement concrete anti-collision wall.

Although the durability of the concrete anti-collision wall is researched more, the durability of a part of coatings is insufficient, and particularly under severe environment, the coating has the hazards of chalking, cracking, peeling and the like, so that the durability of the concrete is influenced.

Although the corrosion resistance of the concrete anti-collision wall is continuously paid attention to, the self-cleaning property and the antibacterial and anti-algae performance of the anti-collision wall do not attract enough attention of researchers, and the attractiveness and the durability of the anti-collision wall are influenced.

Disclosure of Invention

The invention provides a self-cleaning material and a preparation method thereof, aiming at the problems that the existing anti-collision wall has poor durability of partial coating, the coating adsorbs dust seriously on the surface of the coating in the natural environment, and the coating is bred with mould and algae.

The invention provides a self-cleaning material, which comprises a liquid component A, an auxiliary agent component B and a powder component C, wherein,

the liquid component A comprises:

15-22 parts of emulsion i;

15-22 parts of emulsion ii;

the auxiliary component B comprises:

the powder component C comprises:

the liquid component A, the auxiliary agent component B and the powder component C are respectively (30-44) in parts by mass: (1.5-4): (17-48).

According to an embodiment of the present invention, the emulsion i in the liquid component a is selected from one or more of an aqueous fluorocarbon resin emulsion, an aqueous acrylic modified fluorocarbon resin emulsion, an aqueous polyvinylidene fluoride emulsion, and an aqueous polytetrafluoroethylene emulsion.

According to another embodiment of the present invention, the emulsion ii is selected from one or more of an aqueous acrylic emulsion, an aqueous silicone-modified acrylic emulsion, an aqueous acrylic and styrene copolymer emulsion.

According to another embodiment of the present invention, the dispersant in the adjuvant component B is one or more selected from anionic carboxylic acid type wetting dispersants, and the defoaming agent is one or more selected from aqueous defoaming agents.

According to another embodiment of the invention, the self-cleaning aids in the aid component B are selected from one or more of the kemu chemistry FS30, kemu chemistry FS61, 3M 4430, FCS 003, the winning-original us gas chemistry dynol 607.

According to another embodiment of the present invention, said thickener in said adjuvant component B is selected from one or more of hydroxyethyl (c) cellulose ether, white carbon black, associative aqueous thickeners.

According to another embodiment of the invention, the bacteriostatic fungicidal agent in the adjuvant component B is one or more of isothiazolinone, quaternary ammonium salt, benzimidazole ester fungicide.

According to another embodiment of the present invention, the white carbon black in the powder component C is a white carbon black prepared by a vapor phase method or a precipitation method, and the particle size of the white carbon black is 800-2000 meshes.

According to another embodiment of the invention, the titanium dioxide in the powder component C is rutile type, and the particle size is 400-2000 mesh.

The invention also provides a preparation method of the self-cleaning material, which comprises the following steps: uniformly stirring the powder component C, water and the auxiliary agent component B except the thickening agent to form slurry; and uniformly mixing the liquid component A and the slurry, dropwise adding the thickening agent, and uniformly stirring.

The invention adopts the fluorine-containing emulsion as one of film forming substances, the fluorine-containing emulsion contains C-F bonds, the C-F bonds are difficult to break under the action of light and heat, and the coating of the fluorine-containing emulsion has ultra-long weather resistance and remarkable corrosion resistance. The invention adopts the components with lasting antibacterial and mildew-proof properties, can inhibit the growth of mildew on the concrete surface in a humid environment for a long time and achieves the mildew-proof grade 0.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.

Herein, "part" means "part by mass" unless otherwise specified.

The self-cleaning material comprises a liquid component A, an auxiliary agent component B and a powder component C, wherein the liquid component A, the auxiliary agent component B and the powder component C are respectively (30-44) in parts by mass: (1.5-4): (17-48).

The liquid component a comprises:

15-22 parts of emulsion i;

15-22 parts of emulsion ii;

the auxiliary component B comprises:

the powder component C comprises:

the liquid component A plays a role in forming a film, adhering to the surface of a substrate, reducing the surface energy of the material and the like in the self-cleaning material. Wherein, the emulsion i mainly plays a role in reducing the surface energy of the coating and forming a film, and the emulsion ii mainly plays a role in forming the film and adhering to the surface of the substrate. The emulsion part is less than 30, the surface of a paint film is poor, the emulsion part is more than 44, and the stain resistance of the paint is obviously reduced.

Specifically, the emulsion i is selected from one or more of aqueous fluorocarbon resin (FEVE) emulsion, aqueous acrylic modified fluorocarbon resin emulsion, aqueous polyvinylidene fluoride (PVDF) emulsion and aqueous Polytetrafluoroethylene (PTFE) emulsion.

The emulsion ii is selected from one or more of aqueous acrylic emulsion, aqueous organic silicon modified acrylic emulsion, aqueous acrylic acid and styrene copolymer emulsion.

The auxiliary component B plays roles of dispersing, defoaming, leveling and the like in the coating, and the addition of too much or too little auxiliary causes the surface of a cured paint film to be abnormal.

The dispersant is one or more selected from anionic carboxylic acid type wetting dispersants. May be TM 731A, BASF PA 25CL and SN5040 of DOW (Dow chemical), etc.

The defoaming agent is selected from one or more of aqueous defoaming agents. Can be BASF D20, BYK A530, and Minglinchem A203.

The self-cleaning auxiliary agent is selected from one or more of Kemu chemical FS30, Kemu chemical FS61, 3M 4430, FCS 003 and American gas chemical dynol 607.

The thickener is one or more selected from hydroxyethyl (propyl) cellulose ether, white carbon black and associated water-based thickener.

One or more of bacteriostatic fungicide isothiazolinone, quaternary ammonium salt, benzimidazole ester fungicide.

The powder component C mainly plays a role in filling and reducing cost, and part of the powder plays a role in reducing the surface adsorption of a paint film. The addition of the powder C is too much, the surface of a paint film is easy to crack, the addition of the powder C is too little, the surface hardness of the paint film is not high, and the stain resistance is reduced.

The white carbon black is prepared by a gas phase method or a precipitation method, and the particle size of the particles is 800-2000 meshes.

The titanium dioxide in the powder component C is rutile type, and the particle size is 400-2000 meshes.

The invention also provides a preparation method of the self-cleaning material, which comprises the following steps: uniformly stirring the powder component C, water and the auxiliary agent component B except the thickening agent to form slurry; and uniformly mixing the liquid component A and the slurry, dripping the thickening agent, and uniformly stirring.