Nano self-cleaning coating and preparation method thereof

Abstract

The invention relates to the technical field of coating protection, in particular to a nano self-cleaning coating and a preparation method thereof. The nano self-cleaning coating comprises the following components in parts by weight: 100 parts of fluorocarbon resin, 60-70 parts of organic silicon, 15-30 parts of wax powder, 20-30 parts of an anti-ultraviolet agent, 60-80 parts of an anti-sticking agent, 5-10 parts of a thickening agent, 1-3 parts of a defoaming agent and 1-3 parts of a flatting agent. The self-cleaning coating not only has a waterproof function, but also has a photocatalytic function, can effectively oxidize and decompose organic dirt adhered to the surface of a base material into inorganic substances, and realizes a surface self-cleaning effect in combination with the waterproof characteristic.

Description

Technical Field

[0001] This invention relates to the field of coating protection technology, and in particular to a nano self-cleaning coating and its preparation method. Background Technology

[0002] Nano-self-cleaning coatings are an advanced coating technology with hydrophobic and photocatalytic functions. Their applications include, but are not limited to, the following: Construction: Applying nano-self-cleaning coatings to building material surfaces can improve the anti-fouling ability of building exteriors, reduce the frequency of cleaning and maintenance, and maintain the building's aesthetic appeal. Automotive: Using nano-self-cleaning coatings on car surfaces can reduce the impact of dirt, dust, and water stains on the car body, reduce cleaning frequency, and maintain the vehicle's shine. Medical Devices: Nano-self-cleaning coatings can be applied to the surfaces of medical devices to reduce bacterial adhesion and improve the device's hygienic performance. Environmental Protection: Nano-self-cleaning coatings can degrade organic pollutants, have a good purifying effect on the environment, and help improve environmental quality. Other Fields: Nano-self-cleaning coatings can also be applied to the surfaces of materials such as glass and ceramics to improve their cleaning performance, and are widely used in household goods, kitchen and bathroom equipment, and other fields.

[0003] Most self-cleaning coatings on the market currently have low light transmittance, which is reflected in the macroscopic appearance as dull colors and affects the visual effect. Summary of the Invention

[0004] The purpose of this invention is to provide a nano self-cleaning coating with good anti-corrosion and decontamination properties, and this application applies it to the surface of steel structures.

[0005] The technical solution adopted in this invention is as follows:

[0006] A nano self-cleaning coating and its preparation method are characterized in that the nano self-cleaning coating is composed of 100 parts of fluorocarbon resin, 60-70 parts of organosilicon, 15-30 parts of wax powder, 20-30 parts of UV stabilizer, 60-80 parts of anti-sticking agent, 5-10 parts of thickener, 1-3 parts of defoamer, and 1-3 parts of leveling agent.

[0007] Using the above technical solution, the nano self-cleaning coating has good anti-corrosion and stain removal properties.

[0008] The nano self-cleaning coating is characterized in that the defoamer is an organosilicon defoamer.

[0009] Furthermore, the nano self-cleaning coating is characterized in that the tantalum oxide ceramic powder has a particle size between 100-300 μm.

[0010] Furthermore, the leveling agent used in the nano self-cleaning coating is characterized in that the leveling agent is an organosilicon-based leveling agent.

[0011] Furthermore, the nano self-cleaning coating is characterized in that the fluorocarbon epoxy resin is selected from trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate, octafluoropentyl methacrylate, hexafluoroisopropyl methacrylate, hexafluorobutyl acrylate, hexafluorobutyl methacrylate, hexafluoroisopropyl acrylate, or hexafluoroisopropyl methacrylate.

[0012] Furthermore, the nano self-cleaning coating is characterized in that the wax powder is a polyethylene wax powder.

[0013] Furthermore, the leveling agent in the nano self-cleaning coating is characterized in that: the leveling agent is an organosilicon-based leveling agent.

[0014] Furthermore, the nano self-cleaning coating is characterized in that the anti-ultraviolet agent is a UV absorber.

[0015] Furthermore, the organosilicon in the nano self-cleaning coating is characterized in that the organosilicon is a siloxane.

[0016] The nano self-cleaning coating and its preparation method are characterized by comprising the following preparation steps:

[0017] (1) Stir anhydrous ethanol and water evenly, slowly add wax powder, and after the solution is evenly mixed, centrifuge, wash, dry, grind, and calcine at 350°C to 500°C to obtain wax powder with good superhydrophobicity. (2) Add wax powder to fluorocarbon resin, stir and mix evenly to obtain suspension.

[0018] (3) Add the well-mixed suspension to the silicone, anti-sticking agent, thickener, defoamer and leveling agent.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description section.

[0020] Figure 1 The image shows a scanning electron microscope (SEM) image of the nano-self-cleaning coating particles prepared in Example 1.

[0021] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to examples.

[0022] Example 1

[0023] In this embodiment, the fluorocarbon epoxy resin is one of the following: trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate, octafluoropentyl methacrylate, hexafluoroisopropyl methacrylate, hexafluorobutyl acrylate, hexafluorobutyl methacrylate, hexafluoroisopropyl acrylate, or hexafluoroisopropyl methacrylate.

[0024] Furthermore, the ingredients include 60 parts silicone, 15 parts wax powder, 2 parts UV stabilizer, 60 parts anti-sticking agent, 5 parts thickener, 1 part defoamer, and 1 part leveling agent.

[0025] In this implementation 2

[0026] In this embodiment, the fluorocarbon epoxy resin is one of the following: trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate, octafluoropentyl methacrylate, hexafluoroisopropyl methacrylate, hexafluorobutyl acrylate, hexafluorobutyl methacrylate, hexafluoroisopropyl acrylate, or hexafluoroisopropyl methacrylate.

[0027] Furthermore, the ingredients include 70 parts silicone, 20 parts wax powder, 5 parts UV stabilizer, 70 parts anti-sticking agent, 6 parts thickener, 2 parts defoamer, and 2 parts leveling agent.

[0028] Table 1 shows the performance parameters of the products obtained in each embodiment.

[0029] Table 1 Visible transmittance (%) UV shielding rate (%) Wetting angle (°) Example 1 82 90 2 Example 2 91 91 2

Claims

1. A nano self-cleaning coating and its preparation method, characterized in that, The nano self-cleaning coating is composed of 100 parts fluorocarbon resin, 60-70 parts organosilicon, 15-30 parts wax powder, 20-30 parts UV stabilizer, 60-80 parts anti-sticking agent, 5-10 parts thickener, 1-3 parts defoamer, and 1-3 parts leveling agent.

2. The nano self-cleaning coating according to claim 1, characterized in that: The defoamer is an organosilicon defoamer.

3. The nano self-cleaning coating according to claim 1, characterized in that... The fluorocarbon epoxy resin is selected from trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate, octafluoropentyl methacrylate, hexafluoroisopropyl methacrylate, hexafluorobutyl acrylate, hexafluorobutyl methacrylate, hexafluoroisopropyl acrylate, or hexafluoroisopropyl methacrylate.

4. The nano self-cleaning coating according to claim 1, wherein the silicon powder is characterized in that: The wax powder is a polyethylene wax powder.

5. The leveling agent in the nano self-cleaning coating according to claim 1 is characterized in that: The leveling agent is an organosilicon-based leveling agent.

6. The nano self-cleaning coating according to claim 1, wherein the UV-resistant agent is characterized in that: The anti-ultraviolet agent is a UV absorber.

7. The nano self-cleaning coating according to claim 1, wherein the organosilicon is characterized in that: The organosilicon is a siloxane.

8. The thickener in the nano self-cleaning coating according to claim 1 is characterized in that: The thickener monomers are selected from polyamide thickeners, polyamide-amide thickeners, and cellulose thickeners.

9. The nano self-cleaning coating and its preparation method according to claim 1, characterized in that, The preparation steps include the following: (1) Stir anhydrous ethanol and water evenly, slowly add wax powder, and after the solution is evenly mixed and the reaction is complete, centrifuge, wash, dry, grind, and calcine at 350℃~500℃ to obtain wax powder with good superhydrophobicity. (2) Add the wax powder to the fluorocarbon resin and stir to mix evenly to obtain a suspension. (3) Add the well-mixed suspension to the silicone, anti-sticking agent, thickener, defoamer and leveling agent.

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