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Waterborne polyurethane composite paint

A water-based polyurethane and composite coating technology, applied in the field of coatings and paints, can solve the problems of poor chemical resistance, immaturity, poor water resistance, etc., and achieve the effect of strengthening the application range, water resistance and mechanical properties.

Inactive Publication Date: 2013-05-15
JIANGSU JIFU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyacrylic acid has the disadvantages of poor water resistance and poor chemical resistance. At present, the research on combining the two is not yet mature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Heat 90 parts of water to 80°C, add 30 parts of water-based polyurethane emulsion, 20 parts of polyacrylic acid, and 25 parts of polyisocyanate in sequence, stir evenly, slowly raise the temperature to 100°C, then add 38 parts of divinylbenzene and 10 parts of titanium dioxide, Stir for 20 minutes, cool down, dry and filter to obtain the water-based polyurethane composite coating of the present invention.

Embodiment 2

[0016] Heat 80 parts of water to 80°C, add 40 parts of water-based polyurethane emulsion, 12 parts of polyacrylic acid, and 20 parts of polyisocyanate in sequence, stir evenly, slowly raise the temperature to 100°C, then add 30 parts of divinylbenzene and 15 parts of titanium dioxide, Stir for 20 minutes, cool down, dry and filter to obtain the water-based polyurethane composite coating of the present invention.

[0017] Example 2

[0018] Heat 100 parts of water to 80°C, add 60 parts of water-based polyurethane emulsion, 25 parts of polyacrylic acid, and 30 parts of polyisocyanate in sequence, stir evenly, slowly heat up to 100°C, then add 40 parts of divinylbenzene and 12 parts of titanium dioxide, Stir for 20 minutes, cool down, dry and filter to obtain the water-based polyurethane composite coating of the present invention.

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PUM

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Abstract

The invention discloses waterborne polyurethane composite paint which is characterized by being prepared by the raw materials in parts by weight as follows: 40-60 parts of waterborne polyurethane emulsion, 12-25 parts of polyacrylic acid, 20-30 parts of polyisocyanate, 30-40 parts of cross-linking agent, 10-15 parts of stuffing and 80-100 parts of water. The waterborne polyurethane composite paint prepared by the invention combines the advantages of polyurethane paint and polypropylene paint, and has the characteristics of good wear-resistance, corrosion resistance, bright resistance, waterproofness and mechanical property. In addition, a polyurethane film can be made as a film with high hardness or an elastic film with good flexibility, so that the application range of the polyurethane paint is greatly enhanced.

Description

[0001] technical field [0002] The invention belongs to the technical field of coatings and paints, in particular to a water-based polyurethane composite coating. Background technique [0003] Any paint that uses water as a solvent or as a dispersion medium can be called a water-based paint. Water-based coatings include three types: water-soluble coatings, water-dilutable coatings, and water-dispersible coatings. Water-soluble coatings use water-soluble resins as film-forming materials, represented by polyvinyl alcohol and its various modified products. There are also water-soluble alkyd resins, water-soluble epoxy resins, and inorganic polymer water-based resins, etc.; water-dilutable coatings refer to coatings prepared after emulsified emulsions become films, which are solvent-based resins dissolved in organic solvents, and then re-emulsified. With the help of strong mechanical stirring, the resin is dispersed in water to form an emulsion, which is called a post-emulsifi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/00C09D4/06C09D7/12
Inventor 葛亚
Owner JIANGSU JIFU NEW MATERIAL
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