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Nanoparticle super-hydrophobic self-cleaning wall paint and preparation method thereof

A technology of nano-particles and wall paint, applied in the field of wall paint, to achieve the effect of good hydrophobicity, low surface energy and not easy to be damaged

Active Publication Date: 2015-04-08
DONGGUAN TOMORROW NANO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, there are few reports in the prior art that there is a coating that can not only form a hydrophobic surface, but also form nano-scale bumps on the hydrophobic surface like a lotus leaf.

Method used

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  • Nanoparticle super-hydrophobic self-cleaning wall paint and preparation method thereof
  • Nanoparticle super-hydrophobic self-cleaning wall paint and preparation method thereof
  • Nanoparticle super-hydrophobic self-cleaning wall paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A nanoparticle super-hydrophobic self-cleaning wall paint, comprising the following components in parts by weight

[0034]

[0035] The filler is diatomaceous earth.

[0036] The film-forming resin is epoxy resin.

[0037] The auxiliary agent includes a cross-linking agent, an initiator and an accelerator; the cross-linking agent is styrene; the initiator is benzoyl peroxide; and the accelerator is triethylamine.

[0038] The preparation method of described hydrophobic nano titanium dioxide particles is as follows:

[0039] 1) Add 10kg of nano-titanium dioxide to 0.2kg of distilled water, stir evenly, then add 0.05kg of silane coupling agent, heat to 80°C, stir evenly to obtain mixture 1;

[0040] 2) Add mixture 1 with 15% silicon-fluorine material by mass under slow stirring, and continue stirring until uniformly mixed to obtain mixture 2;

[0041] 3) Add an emulsifier of 3% by mass of mixture 2 to mixture 2, emulsify at 100°C for 100 minutes at high speed, and c...

Embodiment 2

[0049] A nanoparticle super-hydrophobic self-cleaning wall paint, comprising the following components in parts by weight

[0050]

[0051]

[0052] The filler is a mixture of magnesium silicate and talcum powder.

[0053] The film-forming resin is phenolic resin.

[0054] Described auxiliary agent comprises linking agent, initiator and promotor; Described linking agent is styrene and methyl methacrylate; Described initiator is benzoyl peroxide and tert-butyl hydroperoxide; Described The accelerator is diethylaniline.

[0055] The preparation method of described hydrophobic nano titanium dioxide particles is as follows:

[0056] 1) Add 10kg of nano titanium dioxide to 0.1kg of distilled water, stir evenly, then add 0.03kg of silane coupling agent, heat to 90°C, stir evenly to obtain mixture 1;

[0057] 2) Add mixture 1 with 30% silicon-fluorine material by mass under slow stirring, and continue stirring until uniformly mixed to obtain mixture 2;

[0058] 3) Add 5% emuls...

Embodiment 3

[0066] A nanoparticle super-hydrophobic self-cleaning wall paint, comprising the following components in parts by weight

[0067]

[0068] The filler is talcum powder.

[0069] The film-forming resin is acrylic resin.

[0070] Described auxiliary agent comprises cross-linking agent, initiator and accelerator; Described cross-linking agent is diallyl phthalate; Described initiator is butanone peroxide; Described accelerator is triethylamine and diethylamine A mixture of anilines.

[0071] The preparation method of described hydrophobic nano titanium dioxide particles is as follows:

[0072] 1) Add 10kg of nano-titanium dioxide to 0.01kg of distilled water, stir evenly, then add 0.01kg of silane coupling agent, heat to 100°C, stir evenly to obtain mixture 1;

[0073] 2) Add mixture 1 with 10% silicon-fluorine material by mass under slow stirring, and continue stirring until uniformly mixed to obtain mixture 2;

[0074] 3) Add 5% emulsifier SDS of mixture 2 to mixture 2, e...

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Abstract

The invention provides a preparation method for hydrophobic nanometer titanium dioxide. The preparation method comprises the following steps: 1) adding nanometer titanium dioxide into distilled water accounting for 0.1 to 2% of the mass of nanometer titanium dioxide, uniformly mixing the above-mentioned components with stirring, then adding a silane coupling agent accounting for 0.1 to 0.5% of the mass of nanometer titanium dioxide, heating to a temperature of 80 to 100 DEG C and carrying out uniform mixing with stirring so as to obtain a mixture I; 2) adding a silicon-fluorine material accounting for 10 to 30% of the mass of the mixture I with slow stirring and continuing stirring until uniform mixing is realized so as to obtain a mixture II; and 3) adding an emulsifier accounting for 3 to 5% of the mass of the mixture II into the mixture II, carrying out high-speed emulsification at a temperature of 80 to 100 DEG C for 90 to 120 min and then carrying out cooling so as to obtain viscous nanometer titanium dioxide slurry, i.e., hydrophobic nanometer titanium dioxide. The invention further provides a nanoparticle super-hydrophobic self-cleaning wall paint containing hydrophobic nanometer titanium dioxide and a preparation method thereof. The nanoparticle super-hydrophobic self-cleaning wall paint has a good hydrophobic function, forms a stable contact angle of 150 DEG with water and a rolling contact angle of less than 5 DEG and has powerful and long-lasting self-cleaning capability.

Description

technical field [0001] The invention relates to the technical field of wall paint, in particular to a nanoparticle superhydrophobic self-cleaning wall paint and a preparation method thereof. Background technique [0002] According to bionics reports, there are two reasons for the superhydrophobic self-cleaning effect formed on the surface of the lotus leaf: one is that the surface of the lotus leaf is covered with a layer of low surface energy wax; the other is that the surface has a certain micro-nano binary roughness. sudden. The papillae with micro-nano binary roughness refer to the following two submicrostructures: one is a micron-scale protrusion, and the other is a nano-scale hair-like structure. The generation of the "lotus leaf effect" is closely related to the above two submicrostructures of the lotus leaf. The research found that the contact angle of the lotus leaf containing the two structures is 142°, while the contact angle of the lotus leaf containing only the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/12C09D5/00
Inventor 梁斓
Owner DONGGUAN TOMORROW NANO SCI & TECH
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