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Environment-friendly organic-inorganic composite coating and preparation method thereof

An environment-friendly, inorganic composite technology, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of easy scale and powder film formation, large volume shrinkage, poor flexibility, etc., to achieve good practical value, simple preparation method, high performance stable effect

Inactive Publication Date: 2015-07-22
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual use, inorganic coatings also have poor film-forming problems such as poor flexibility and easy scaling and powdering. For example, coatings with silica sol as the main film-forming substance will shrink due to large volume after drying. The phenomenon of membrane cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The environment-friendly organic-inorganic composite coating of the present invention is made of SiO 2 Silica sol 24% with a content of 30%, styrene-acrylic emulsion with a solid content of 40% 16%, kaolin with a purity of 90% 38%, rutile titanium dioxide 9.5%, ethylene glycol 0.8%, KH550 silane coupling agent 0.4% , 11.3% water:

[0019] 1) First, add KH550 silane coupling agent into the silica sol, stir well to make it evenly mixed, and obtain compound solution A after standing for 24 hours;

[0020] 2) Add ethylene glycol into the styrene-acrylic emulsion, stir well to make it evenly mixed, and get compound solution B after standing for 24 hours;

[0021] 3) Mix compound solution A and compound solution B evenly, then add kaolin, rutile titanium dioxide and water, and keep stirring for 2 hours to obtain an environmentally friendly finished organic-inorganic composite coating.

Embodiment 2

[0023] The environment-friendly organic-inorganic composite coating of the present invention is made of SiO 2 Silica sol 27% with a content of 30%, styrene-acrylic emulsion with a solid content of 40% 18%, kaolin with a purity of 90% 34%, rutile titanium dioxide 8.5%, ethylene glycol 0.9%, KH550 silane coupling agent 0.5% , water 11.1% prepared from:

[0024] 1) First, add KH550 silane coupling agent into the silica sol, stir well to make it evenly mixed, and obtain compound solution A after standing for 24 hours;

[0025] 2) Add ethylene glycol into the styrene-acrylic emulsion, stir well to make it evenly mixed, and get compound solution B after standing for 24 hours;

[0026] 3) Mix compound solution A and compound solution B evenly, then add kaolin, rutile titanium dioxide and water, and keep stirring for 2 hours to obtain an environmentally friendly finished organic-inorganic composite coating.

Embodiment 3

[0028] The environment-friendly organic-inorganic composite coating of the present invention is made of SiO 2 30% silica sol with a content of 30%, 20% styrene-acrylic emulsion with a solid content of 40%, 32% kaolin with a purity of 90%, 8% rutile titanium dioxide, 1.2% ethylene glycol, and 0.6% KH550 silane coupling agent , 8.2% water:

[0029] 1) First, add KH550 silane coupling agent into the silica sol, stir well to make it evenly mixed, and obtain compound solution A after standing for 24 hours;

[0030] 2) Add ethylene glycol into the styrene-acrylic emulsion, stir well to make it evenly mixed, and get compound solution B after standing for 24 hours;

[0031] 3) Mix compound solution A and compound solution B evenly, then add kaolin, rutile titanium dioxide and water, and keep stirring for 2 hours to obtain an environmentally friendly finished organic-inorganic composite coating.

[0032] The performance index of the finished coating obtained by actual measurement is ...

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PUM

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Abstract

The invention discloses an environment-friendly organic-inorganic composite coating. The environment-friendly organic-inorganic composite coating is prepared from the following components by weight percent: 24-30% of silica sol with the SiO2 content of 30%, 16-20% of styrene-acrylic emulsion with the solid content of 40-48%, 40-48% of pigment and filler, 10-15% of water and 1-2% of adjuvant. The invention also discloses a preparation method of the composite coating. The environment-friendly organic-inorganic composite coating has the advantages of cheap raw material cost, simple preparation method, toxic substance in the whole preparation process and using process, and environmental friendliness. The prepared product coating has the advantages of the organic coating and the inorganic coating, is stable in performance, washing resistance and corrosion resistance and can be cured into a film under normal temperature and the film does not crack. The test shows that the performance index and the environment protection index are respectively in accordance with the national standard requirement and the coating has good application value.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to an environment-friendly organic-inorganic composite coating, and also relates to a preparation method of the composite coating. Background technique [0002] Traditional organic coatings will continue to release some harmful organic compounds during use, and will also pollute the environment; compared with organic coatings, inorganic coatings not only have excellent weather resistance and water resistance, but also have abundant raw materials and low cost , basically no toxic substances are produced in the process of production and use, and the environmental pollution is relatively small. For example, the commonly used silica sol is not only cheap, but also has a simple production method. When used as a coating base material, it also has strong adhesion and good brushability. It can form a film at room temperature, and the coating film is hard and has strong adhesion. It has ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D125/14C09D7/12
CPCC09D125/14C08K3/22C08K3/346C08K3/36C08K5/053C08K9/06C08K2003/2241C09D5/08C09D7/61C09D7/62C09D7/63
Inventor 张猛张新海宋伟强闫国进陈秋玲王改民
Owner HENAN UNIVERSITY OF TECHNOLOGY
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