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Water-based polyurethane paint and preparation method thereof

A technology of water-based polyurethane and water-based defoamer, which is applied in the field of coatings, can solve the problems of water resistance, salt spray resistance, salt water resistance, chemical resistance, impact resistance, wear resistance and weather resistance, etc. Salt spray effect, good shear resistance and good compatibility

Inactive Publication Date: 2016-09-21
ANHUI WILLY PAINT SCI & TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water resistance, salt spray resistance, salt water resistance, chemical resistance, impact resistance, wear resistance and weather resistance of water-based industrial coatings currently used in metal anti-rust paints and ship coatings in my country are not very good.

Method used

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  • Water-based polyurethane paint and preparation method thereof
  • Water-based polyurethane paint and preparation method thereof
  • Water-based polyurethane paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A water-based polyurethane paint, which is composed of component A and component B in a mass ratio of 5:1, and the component A is prepared from the following components in parts by weight:

[0042]

[0043] The B component is prepared from the following components in parts by weight:

[0044] 12 parts of water-based polyurethane curing agent

[0045] 5 parts of deionized water

[0046] Water-based defoamer 0.02 parts.

[0047] Its preparation method is:

[0048] (1) Mix and stir deionized water, co-solvent, water-based dispersant and half of the water-based defoamer according to the proportion; then add half of the water-based acrylic resin and polyurethane, pigments, and fillers for stirring;

[0049] (2) Grinding the mixture of step (1) by a sand mill to a fineness within 40 microns;

[0050] (3) Continue to stir the material in (2), and add the remaining water-based acrylic resin, water-based defoamer, surfactant, and anti-flash rust agent HZJ-601-4 in turn un...

Embodiment 2

[0055] A water-based polyurethane paint, which is composed of component A and component B in a mass ratio of 5:1, and the component A is prepared from the following components in parts by weight:

[0056]

[0057] The B component is prepared from the following components in parts by weight:

[0058] 15 parts of water-based polyurethane curing agent

[0059] 8 parts deionized water

[0060] Water-based defoamer 0.05 parts.

[0061] Its preparation method is with embodiment 1.

Embodiment 3

[0063] A water-based polyurethane paint, which is composed of component A and component B in a mass ratio of 5:1, and the component A is prepared from the following components in parts by weight:

[0064]

[0065] The B component is prepared from the following components in parts by weight:

[0066] 14 parts of water-based polyurethane curing agent

[0067] 6 parts deionized water

[0068] Water-based defoamer 0.03 parts.

[0069] Its preparation method is with embodiment 1.

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Abstract

The invention provides a water-based polyurethane paint and a preparation method thereof. The water-based polyurethane paint is composed of a component A and a component B in a mass ratio of 5:1. The component A is composed of polyurethane, a water-based acrylic resin, a water-based dispersing agent, a water-based defoaming agent, a surfactant, deionized water, a cosolvent, a flash-rust inhibitor HZJ-601-4, a pigment and a filler. The component B is composed of a water-based polyurethane curing agent, deionized water and a water-based defoaming agent. The water-based polyurethane paint has favorable properties for various substrates, and has much higher wear resistance, acid resistance, alkali resistance, water resistance, oil resistance, heat resistance and the like than like products. The water-based polyurethane paint does not need any organic solvent, thereby protecting the environment and being harmless to the human body.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based polyurethane paint and a preparation method thereof. Background technique [0002] Polyurethane (referred to as PU) is a polymer made of polyisocyanate and polyether polyol or polyester polyol or / and small molecule polyol, polyamine or water and other chain extenders or crosslinking agents. By changing the type and composition of raw materials, the shape and performance of the product can be greatly changed, and the final product from soft to hard can be obtained, which is widely used. Among them, polyurethane paint is a relatively common kind of paint. Its paint film is tough, full of luster, strong adhesion, water resistance, wear resistance, and corrosion resistance. It can be used as a finish paint for high-grade wood furniture or an antirust paint for metal surfaces , Widely used in various fields such as wood, automobiles, aircraft, machinery, electrical app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
CPCC08L2201/08C08L2205/02C08L2205/025C08L2205/035C09D7/61C09D7/65C09D7/70C09D175/04C08L75/04C08L83/04C08K3/36
Inventor 徐徐蔡旭东
Owner ANHUI WILLY PAINT SCI & TECH LTD
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