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Water-based two-component polyurethane paint

A two-component polyurethane and water-based polyurethane technology, which is applied in the field of coatings and paints, can solve the problems of easy aging of the coating film, cracking of the wall surface, and affecting the appearance of buildings, etc., to achieve enhanced application range, water resistance and good mechanical properties Effect

Inactive Publication Date: 2014-01-29
苏州瑞邦塑胶有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of this kind of coating is that the elasticity of the coating film is easy to age, which leads to a decrease in the elongation rate, and cannot effectively protect the strength of the bottom layer of the wall, resulting in cracking and falling off of the wall surface, which not only affects the appearance of the building, but also cracks on the wall surface, causing the wall surface to crack and fall off. surface leaking

Method used

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  • Water-based two-component polyurethane paint

Examples

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Comparison scheme
Effect test

Embodiment 1

[0035] A water-based two-component polyurethane coating is characterized in that the coating is configured by A component and B component, wherein the formula of A component is as follows:

[0036] 60 parts of hydroxyl polyacrylate dispersion

[0037] Leveling wetting agent 0.2 parts

[0038] 12 parts polyacrylic acid

[0039] 20 parts polyisocyanate

[0040] 30 parts of crosslinking agent

[0041] Filling 10 parts

[0042] 1 part of N,N-dimethylethanolamine

[0043] Co-solvent 0.2 parts

[0044] 1 part antifreeze

[0045] Wetting agent 0.2 parts

[0046] 0.2 part of defoamer

[0047] Thickener 0.1 parts

[0048] Wetting agent 0.1 part

[0049] 1 part preservative

[0050] pH regulator

[0051] 30 parts of deionized water; 6 parts of B component polyisocyanate curing agent, add component A into the container according to the above formula, add deionized water, leveling wetting agent, co-solvent, and defoamer in sequence under medium-speed stirring , Thickener, dis...

Embodiment 2

[0057] A water-based two-component polyurethane coating is characterized in that the coating is configured by A component and B component, wherein the formula of A component is as follows:

[0058] 80 parts of hydroxyl polyacrylate dispersion

[0059] 0.3 parts of leveling wetting agent

[0060] 25 parts polyacrylic acid

[0061] 30 parts polyisocyanate

[0062] 40 parts of crosslinking agent

[0063] Filling 15 parts

[0064] N,N-Dimethylethanolamine 2 parts

[0065] Co-solvent 0.5 parts

[0066] Antifreeze 2 parts

[0067] Wetting agent 0.5 parts

[0068] 0.5 parts of defoamer

[0069] Thickener 0.3 parts

[0070] Wetting agent 0.3 parts

[0071] 2 parts preservative

[0072] pH regulator

[0073] 40 parts of deionized water; 9 parts of B component polyisocyanate curing agent, add component A into the container according to the above formula, and add deionized water, leveling wetting agent, cosolvent, and defoamer in sequence under medium speed stirring , Thickene...

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Abstract

The invention discloses a water-based two-component polyurethane paint. The water-based two-component polyurethane paint comprises a component A, and a component B; the component A comprises 60 to 80 parts of hydroxy polyacrylate dispersion, 0.2 to 0.3 part of a leveling wetting agent, 12 to 25 parts of polyacrylic acid, and 20 to 30 parts of polyisocyanate; the B component comprises 6 to 9 parts of a polyisocyanate curing agent. The water-based two-component polyurethane paint is prepared by following steps: the A component containing the ingredients above is delivered into a container; deionized water, the leveling wetting agent, a cosolvent, an antifoaming agent, and a thickening agent are added successively with middle speed stirring; the mixture is subjected to high-speed dispersion for 20 to 30min, and then the water dispersible polyisocyanate curing agent is added according to a certain ratio; and then the water-based two-component polyurethane paint is obtained after full stirring.

Description

technical field [0001] The invention belongs to the technical field of coatings and paints, in particular to a water-based two-component polyurethane coating. Background technique [0002] 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-emulsificatio...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12
Inventor 吴兵
Owner 苏州瑞邦塑胶有限公司
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