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Waterborne polyurethane structure color waterproof coating material, preparation method and application thereof

A water-based polyurethane and waterproof coating technology, which is applied in polyurea/polyurethane coatings, paper coatings, coatings, etc., can solve the problems of complex preparation process and insufficient waterproof performance

Inactive Publication Date: 2021-07-06
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN110079171A discloses a structural color coating based on Mie scattering of high refractive index microspheres. The prepared coating has a brighter structural color, but the preparation process is complicated, and its waterproof performance is caused by the nature of the binder and nano-microspheres used. not prominent enough

Method used

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  • Waterborne polyurethane structure color waterproof coating material, preparation method and application thereof
  • Waterborne polyurethane structure color waterproof coating material, preparation method and application thereof
  • Waterborne polyurethane structure color waterproof coating material, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] 1. Take 0.35 parts by weight of methacrylic acid and 15 parts by weight of styrene and disperse them in deionized water; add 0.2 parts by weight of ammonium persulfate after heating and stirring to 78°C; keep stirring at 78°C overnight. After the crude product is obtained, it is purified to obtain the product; it is centrifuged and concentrated to obtain submicron polystyrene microspheres with an average particle diameter of 210 nm.

[0039] 2. A water-based polyurethane structural color waterproof coating, comprising the following components: 210nm polystyrene microspheres, carbon black and water-based polyurethane emulsion, the mass ratio of 210nm polystyrene microspheres, carbon black and water-based polyurethane emulsion is 210nm polystyrene Ethylene microspheres: carbon black: water-based polyurethane emulsion=1:0.01:3; the mass ratio of water-based polyurethane to water in the water-based polyurethane emulsion is 1:3.

[0040]The above-mentioned 210nm polystyrene ...

Embodiment 2

[0044] 1. Take 0.35 parts by weight of methacrylic acid and 10 parts by weight of styrene and disperse them in deionized water; add 0.2 parts by weight of ammonium persulfate after heating and stirring to 78°C; keep stirring at 78°C overnight. After the crude product is obtained, it is purified to obtain the product; it is centrifuged and concentrated to obtain submicron polystyrene microspheres with an average particle diameter of 180 nm.

[0045] 2. A water-based polyurethane structural color waterproof coating, comprising the following components: 180nm polystyrene microspheres, carbon black and water-based polyurethane emulsion, the mass ratio of 180nm polystyrene microspheres, carbon black and water-based polyurethane emulsion is 180nm polystyrene Ethylene microspheres: carbon black: water-based polyurethane emulsion=1:0.01:3; the mass ratio of water-based polyurethane to water in the water-based polyurethane emulsion is 1:3.

[0046] The above-mentioned 180nm polystyrene...

Embodiment 3

[0050] 1. Take 0.35 parts by weight of methacrylic acid, 15 parts by weight of styrene and 0.025 parts by weight of sodium lauryl sulfate, and disperse them in deionized water; add 0.2 parts by weight of ammonium persulfate after heating and stirring to 78°C; keep stirring at 78°C overnight. After the crude product is obtained, it is purified to obtain the product; it is centrifuged and concentrated to obtain submicron polystyrene microspheres with an average particle diameter of 130 nm.

[0051] 2. A water-based polyurethane structural color waterproof coating, comprising the following components: 130nm polystyrene microspheres, carbon black and water-based polyurethane emulsion, the mass ratio of 130nm polystyrene microspheres, carbon black and water-based polyurethane emulsion is 130nm polystyrene Ethylene microspheres: carbon black: water-based polyurethane emulsion=1:0.01:3; the mass ratio of water-based polyurethane to water in the water-based polyurethane emulsion is 1:...

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Abstract

The invention provides a waterborne polyurethane structure color waterproof coating material, a preparation method and application thereof. The waterborne polyurethane structure color waterproof coating material comprises the following components: monodisperse submicron microspheres, carbon black and waterborne polyurethane emulsion, wherein the monodisperse submicron microspheres and the waterborne polyurethane emulsion are compounded, and carbon black is added to inhibit white background scattering so as to obtain the high-strength waterborne polyurethane coating material with the angle-dependent-free structural color. The coating material disclosed by the invention is simple in preparation process, low in cost and environment-friendly, can be used as a waterproof and heavy-metal-free colored environment-friendly water-based coating material, is easy to smear, high in adhesive force, high in strength, resistant to corrosion and wide in applicability, and has important application value and wide application prospects in the water-based polyurethane industry.

Description

technical field [0001] The invention relates to a water-based polyurethane structural color waterproof coating and a preparation method and application thereof, belonging to the field of structural color. Background technique [0002] With the development of society and the gradual deterioration of the environment, paints containing VOCs are gradually being eliminated from the market and replaced by water-based paints. Water-based polyurethane has the characteristics of good toughness, high temperature resistance, low temperature resistance, and excellent UV resistance, and does not have the disadvantages of being volatile, flammable, explosive, and toxic. It has become a film-forming substance that is widely used in coatings. [0003] There are two major pollutants in traditional paints: volatile organic compounds (such as toluene, formaldehyde) and heavy metal pigment substances (such as cadmium yellow PbCrO 4 ). Although the industrial technology that has been industria...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/61C09D7/65D21H19/24D21H19/20D21H21/16D06M15/564D06M11/74D06M11/79
CPCC09D175/04C09D7/61C09D7/65C09D7/70C09D7/68D21H19/24D21H19/20D21H21/16D06M15/564D06M11/74D06M11/79C08K2201/011C08L2205/18
Inventor 刘乃瑜洪炜陈旭东
Owner SUN YAT SEN UNIV
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