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Nano-sol for forming anti-aging and stain-resistant nano-coating and preparation method and application thereof

A nano-coating and nano-sol technology, applied in the direction of coating, etc., can solve the problems of affecting catalysis and hydrophilicity, increasing energy consumption in heat treatment process, and inapplicable process methods, so as to inhibit the growth of grains and pro- Improvement of water property and improvement of binding force

Inactive Publication Date: 2014-07-16
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But TiO 2 There are many problems in the use of self-cleaning coatings: (1) The substrate coated with titanium dioxide sol needs to be heat-treated to prepare stable crystal form of TiO 2 , and improve the bonding force between the coating and the substrate
This method is not suitable for substrates that cannot be heat-treated at high temperatures, such as color-coated plates
At the same time, the heat treatment process increases energy consumption and increases production costs; (2) Light conditions directly affect the TiO 2 The catalytic effect and hydrophilicity of the coating; (3) dust or non-volatile substances will penetrate into the gaps on the surface of the paint film, making the durability unsatisfactory; (4) due to Ti0 2 The particles are small, easy to agglomerate in aqueous solution, and the crystal form is unstable, which affects its activity and faces great difficulties in the practical process

Method used

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  • Nano-sol for forming anti-aging and stain-resistant nano-coating and preparation method and application thereof
  • Nano-sol for forming anti-aging and stain-resistant nano-coating and preparation method and application thereof
  • Nano-sol for forming anti-aging and stain-resistant nano-coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A nano-sol for forming an anti-aging and stain-resistant nano-coating, calculated by mass percentage, its composition and content are as follows:

[0037] Nano-TiO 2 Sol 10%

[0038] Sodium silicate 1%

[0039] Cerium oxide sol 5%

[0040] The balance is a mixed solution composed of ethanol and water;

[0041] The mixed solution composed of ethanol and water is calculated by volume ratio, that is, ethanol: water is 1:1;

[0042] The nano-TiO 2 The particle size of the sol is 2-8nm;

[0043] The particle size of the cerium oxide sol is 2-15 nm.

[0044] Above-mentioned a kind of preparation method that is used to form the nano-sol of anti-aging, stain-resistant nano-coating specifically comprises the following steps:

[0045] (1) Preparation of nano-TiO by sol-gel method 2 sol

[0046] Dissolve 50ml of tetrabutyl titanate in absolute ethanol to prepare a 0.1M tetrabutyl titanate absolute ethanol solution, add deionized water 0.1 times...

Embodiment 2

[0056] A nano-sol for forming an anti-aging and stain-resistant nano-coating, calculated by mass percentage, its composition and content are as follows:

[0057] Nano-TiO 2 Sol 5%

[0058] Sodium silicate 5%

[0059] Cerium oxide sol 0.1%

[0060] The balance is a mixed solution composed of ethanol and water;

[0061] The mixed solution composed of ethanol and water is calculated by volume ratio, that is, ethanol: water is 1:3;

[0062] The nano-TiO 2 The particle size of the sol is 5-15nm;

[0063] The particle size of the cerium oxide sol is 5-15 nm.

[0064] Above-mentioned a kind of preparation method that is used to form the nano-sol of anti-aging, stain-resistant nano-coating specifically comprises the following steps:

[0065] (1) Preparation of nano-TiO by sol-gel method 2 sol

[0066] Dissolve 50ml of tetrabutyl titanate in absolute ethanol to prepare a 0.1M tetrabutyl titanate absolute ethanol solution, add deionized water 0.1 times the volume of the above a...

Embodiment 3

[0076] A nano-sol for forming an anti-aging and stain-resistant nano-coating, calculated by mass percentage, its composition and content are as follows:

[0077] Nano-TiO 2 Sol 10%

[0078] Sodium silicate 10%

[0079] Cerium oxide sol 2%

[0080] Colorant 0.01%

[0081] The balance is a mixed solution composed of ethanol and water;

[0082] The mixed solution composed of ethanol and water is calculated by volume ratio, that is, ethanol: water is 1:2;

[0083] The nano-TiO 2 The particle size of the sol is 2-10nm;

[0084] The particle size of the cerium oxide sol is 5-15nm;

[0085] The coloring agent is a water-soluble royal blue dye.

[0086] Above-mentioned a kind of preparation method that is used to form the nano-sol of anti-aging, stain-resistant nano-coating specifically comprises the following steps:

[0087] (1) Preparation of nano-TiO by sol-gel method 2 sol

[0088] Dissolve 50ml of tetrabutyl titanate in absolute ethanol to prepare a 0.1M tetrabutyl tit...

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Abstract

The invention discloses nano-sol for forming an anti-aging and stain-resistant nano-coating and a preparation method thereof. The nano-sol for forming the anti-aging and stain-resistant nano-coating comprises the following components in percentage by weight: 0.1-10% of nano-TiO2 sol, 0.1-20% of sodium silicate, 0.1-5% of cerium oxide sol, 0-0.1% of colorant and the balance of water or mixed solution consisting of ethanol and water. The preparation method comprises the steps of firstly preparing the nano-TiO2 sol by adopting a sol-gel method, then preparing the Ce2O3 sol, then adding sodium silicate and the Ce2O3 sol into the nano-TiO2 sol, uniformly stirring, further adding the colorant, and finally adding the balance of water or the mixed solution consisting of ethanol and water to obtain the nano-sol for forming the anti-aging and stain-resistant nano-coating. The nano-coating which is used for a color-coated plate and obtained by coating has the properties of aging resistance, stain resistance, corrosion resistance and the like, and the service life of the color-coated plate can be prolonged.

Description

technical field [0001] The invention relates to a nano sol for forming an anti-aging and stain-resistant nano-coating, a preparation method thereof and its application in forming an anti-aging and stain-resistant nano-coating, belonging to the field of nano functional materials and environmental protection materials. Background technique [0002] Pre-painted steel sheet is a new type of strip steel pre-coated product that has been developed rapidly in the world in the past 30 years. It has decorative, formable, and corrosion-resistant properties. Materials (wall materials, ceiling materials, partitions, fire doors) and building accessories (window panels, signboards, home appliances), etc. However, in industrial areas, coastal areas or areas with severe smog, due to the action of soot particles, sulfur dioxide gas or salt in the air, the color coating on the surface of the color-coated board is severely corroded and aged. Especially in the case of strong sunlight, pollutant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00C09D7/12
Inventor 陈爱英田翰林刘星孙妍妍第文琦潘登
Owner UNIV OF SHANGHAI FOR SCI & TECH
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