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Self-cleaning and environmental-friendly interior and exterior wall coating of buildings and preparation method thereof

A self-cleaning technology for interior and exterior walls, applied in polyether coatings, antifouling/underwater coatings, coatings, etc., can solve single problems, achieve surface dirt removal, good stability, improve self-cleaning and decompose pollution The effect of the power of things

Inactive Publication Date: 2015-06-17
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing coatings are mostly single-function coatings, and some are self-cleaning

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The self-cleaning environmental protection building interior and exterior wall paint of this embodiment is prepared from the following raw materials: SiO 2 Sol solid content 5.4g, anatase TiO 2 Nano powder 7.8g, glacial acetic acid 2.1g, acrylic resin 1.4g and water 200g.

[0019] The preparation method is as follows:

[0020] (1) Mix and stir 20 mL of tetraethyl orthosilicate, 100 mL of ethanol and 1 mL of 25 wt % ammonia water for 2 hours to obtain the SiO 2 Sol, SiO 2 The solid content concentration in the sol is 44.55 g / l;

[0021] (2) Anatase TiO with a particle size of 25nm 2 Add 7.8g of nano powder, 200g of water, 2.1g of glacial acetic acid and 1.4g of acrylic resin into SiO with a solid content of 5.4g prepared in step (1) 2 The sol was ball-milled for 2 hours to obtain a uniform translucent solution, which is the self-cleaning and environmentally friendly building interior and exterior wall coating of this embodiment.

[0022] Spray the self-cleaning env...

Embodiment 2

[0024] The self-cleaning environmental protection building interior and exterior wall paint of this embodiment is prepared from the following raw materials: SiO 2 Sol solid content 4.2g, anatase TiO 2 Nano powder 10g, glacial acetic acid 1.58g, carboxymethyl cellulose 1.2g and water 200g.

[0025] The preparation method is as follows:

[0026] (1) Mix and stir 20 mL of propyl orthosilicate, 100 mL of ethanol and 1 mL of 25 wt % ammonia water for 8 hours to obtain the SiO 2 Sol, SiO 2 The solid content concentration in the sol is 34.80 g / l;

[0027] (2) Anatase TiO with a particle size of 150nm 2 Add 10g of nano powder, 200g of water, 1.58g of glacial acetic acid and 1.2g of carboxymethyl cellulose to SiO with a solid content of 4.2g prepared in step (1) 2 The sol was ball-milled for 10 hours to obtain a uniform translucent solution, which is the self-cleaning and environmentally friendly building interior and exterior wall coating of this embodiment.

[0028] Spray t...

Embodiment 3

[0030] The self-cleaning environmental protection building interior and exterior wall paint of this embodiment is prepared from the following raw materials: SiO 2 Sol solid content 6.7g, anatase TiO 2 Nano powder 15g, glacial acetic acid 2.1g, silicone resin 1.2g and water 200g.

[0031] The preparation method is as follows:

[0032] (1) Mix and stir 10 mL of ethyl orthosilicate, 10 mL of methyl orthosilicate, 80 mL of ethanol and 1 mL of 25wt% ammonia water for 5 hours to obtain the SiO 2 Sol, SiO 2 The solid content concentration in the sol is 66.55g / l;

[0033] (2) Anatase TiO with a particle size of 10nm 2 Add 15g of nanopowder, 200g of water, 2.1g of glacial acetic acid, 0.4g of silicone resin and 0.8g of polyethylene glycol to SiO with a solid content of 6.7g prepared in step (1) 2 The sol was ball-milled for 6 hours to obtain a uniform translucent solution, which is the self-cleaning and environmentally friendly building interior and exterior wall coating of th...

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Abstract

The invention relates to self-cleaning and environmental-friendly interior and exterior wall coating of buildings and a preparation method thereof. Raw materials comprise SiO2 sol, anatase TiO2 nanometer powder, glacial acetic acid, a film forming agent and water. The preparation process is as follows: hydrolyzing with an alcohol salt solution of silicon to obtain the SiO2 sol, mixing the anatase TiO2 nanometer powder, the glacial acetic acid, the film forming agent and the water, grinding to obtain a uniform and semitransparent solution, and thus the self-cleaning coating is prepared. The self-cleaning coating is uniformly spray coated on clean and incompletely dry surfaces of interior walls or exterior walls of buildings, to obtain self-cleaning coating after natural drying, the self-cleaning coating has excellent weather fastness and super-hydrophilicity and can be used for effectively removing surface contaminants and decomposing a variety of pollutants through the sunlight to purify the air and reduce environmental pollution, so that the self-cleaning and environmental-friendly interior and exterior wall coating of buildings has a very good application prospect and important social significance.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a self-cleaning and environment-friendly coating for interior and exterior walls of buildings and a preparation method thereof. Background technique [0002] At present, the self-cleaning coatings on the market mainly include three types: hydrophobic, water-clearing and photocatalytic. Hydrophobic coatings mainly form lotus leaf-like raspberry structures on the surface or use hydrophobic polymers (CN 102051120 A) to obtain large Wetting angle, hydrophilic coatings mainly use the hydrophilic properties of the material itself, and photocatalytic coatings mainly use the photogenerated carriers generated by the material itself to absorb sunlight to achieve photodegradation of pollutants, such as TiO 2 class material. Most existing coatings are mostly single-function coatings, and existing ones are self-cleaning. Some are hydrophobic coatings, while others...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D171/02C09D101/28C09D183/04C09D133/04C09D5/16C09D7/12
CPCC08K3/22C08K3/36C08K2003/2237C08K2201/011C09D5/1618C09D7/61C09D101/286C09D133/00C09D171/08C09D183/04C08L83/04C08L1/286C08K5/09
Inventor 杨萍陈玲朱元娜贾长超
Owner UNIV OF JINAN
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