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Organic-inorganic composite hydrophilic coating

An inorganic composite and hydrophilic technology, applied in the direction of coating, etc., can solve the problems of poor stain resistance of exterior wall coatings, and achieve the effects of durable stain resistance, improved film-forming properties, and improved hydrophilicity

Active Publication Date: 2013-02-06
CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a super-hydrophilic organic-inorganic composite hydrophilic coating with remarkable self-cleaning effect, so as to solve the problem of poor stain resistance of exterior wall coatings

Method used

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  • Organic-inorganic composite hydrophilic coating
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  • Organic-inorganic composite hydrophilic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Prepare according to the following steps:

[0023] ① Prepare the raw materials according to the dosage in Table 1;

[0024] Table 1

[0025]

[0026] ②Add part of 160 parts by weight of water, 0.5 parts by weight of 11% compound emulsifier and 0.1 parts by weight of 20% ammonium persulfate into a reaction vessel equipped with a stirrer, thermometer, condenser and two dropping funnels, Methyl methacrylate monomer, butyl acrylate monomer, hydroxyethyl acrylate monomer, methacrylic acid monomer and unsaturated organosiloxane monomer are mixed uniformly, and then put into a dropping funnel, and the remaining Mix water, compound emulsifier and ammonium persulfate with all N-methylol acrylamide monomers uniformly, and then put them into another dropping funnel;

[0027] ③Start stirring and increase the temperature. When the temperature rises to 80°C, the materials in the 2 dropping funnels are added dropwise at the same time. After the dropwise addition is completed within 1.5 hours...

Embodiment 2

[0029] Prepare according to the following steps:

[0030] ① Prepare the raw materials according to the dosage in Table 2;

[0031] Table 2

[0032]

[0033] ②Add 250 parts by weight of part of water, 1.5 parts by weight of 20% composite emulsifier and 0.2 parts by weight of 25% ammonium persulfate into a reaction vessel equipped with a stirrer, thermometer, condenser and two dropping funnels, Methyl methacrylate monomer, butyl acrylate monomer, hydroxyethyl acrylate monomer, methacrylic acid monomer and unsaturated organosiloxane monomer are mixed uniformly, and then put into a dropping funnel, and the remaining Mix water, compound emulsifier and ammonium persulfate with all N-methylol acrylamide monomers uniformly, and then put them into another dropping funnel;

[0034] ③Start stirring and increase the temperature. When the temperature rises to 80°C, the materials in the two dropping funnels are added dropwise at the same time. After the dropwise addition is completed within 2 hour...

Embodiment 3

[0036] Prepare according to the following steps:

[0037] ① Prepare the raw materials according to the dosage in Table 3;

[0038] table 3

[0039]

[0040] ②Add 200 parts by weight of partial water, 1.0 part by weight of 20% composite emulsifier and 0.2 part by weight of 40% ammonium persulfate into a reaction vessel equipped with a stirrer, a thermometer, a condenser and two dropping funnels. Methyl methacrylate monomer, butyl acrylate monomer, hydroxyethyl acrylate monomer, methacrylic acid monomer and unsaturated organosiloxane monomer are mixed uniformly, and then put into a dropping funnel, and the remaining Mix water, compound emulsifier and ammonium persulfate with all N-methylol acrylamide monomers uniformly, and then put them into another dropping funnel;

[0041] ③Start stirring and increase the temperature. When the temperature rises to 80°C, add the materials in the 2 dropping funnels dropwise at the same time. After the dropwise addition is completed within 1.5h, contin...

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Abstract

The invention relates to an organic-inorganic composite hydrophilic coating which is composed of, by weight, 5-10 parts of a silicon hydroxyl contained acrylic ester emulsion, 10-40 parts of silica sol, 0.5-5 parts of a hydrophilic modified additive, 0-5 parts of other additives and 30-50 parts of deionized water. The silicon hydroxyl contained acrylic ester emulsion is formed by subjecting raw materials of methyl methacrylate, butyl acrylate, hydroxyethyl acrylate, methacrylic acid, N- hydroxymethyl acrylamide, unsaturation organo-siloxane, a compound emulsifier, a ammonium persulfate initiator, water and a potential of hydrogen (PH) conditioning agent to emulsion polymerization. Compared with paint films of conventional water-based dual-component finishing varnish and solvent type fluorocarbon finishing varnish, the pain film of the organic-inorganic composite hydrophilic coating has a super-hydrophilicity performance and a hydrophilic self-cleaning effect and is safe, environment-friendly, obvious in contamination resistant effect, and capable of well protecting the wall surface of a building and reducing maintenance expenses.

Description

Technical field [0001] The invention relates to an organic-inorganic composite hydrophilic paint, which is particularly suitable as a transparent paint for exterior wall coverings and has the function of hydrophilic and self-cleaning. Background technique [0002] The air contains a lot of dust, oil and other pollutants. These pollutants are easy to adhere to the facade of the building, window sills, terraces and other flat structures, and even penetrate into the interior of the decorative layer. The accumulation of time makes the building dark The old age seriously affects the beauty of the building and the decorative effect of the decorative materials, and increases the cleaning and maintenance costs of the building walls. In recent years, the proportion of oily pollutants in the atmosphere has gradually increased. The coating film is required to have the ability to resist oily pollutants, and the role of hydrophilic coatings has become more and more apparent. At present, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/08C09D7/12C08F220/18C08F230/08C08F220/14C08F2/26C08F2/30
Inventor 何庆迪孔志元史立平蔡青青
Owner CNOOC CHANGZHOU PAINT & COATINGS IND RES INST
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