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Polymer waterborne paint with corresponding features to ultraviolet light

A technology of water-based coatings and polymers, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of single-function polymer water-based coatings, and achieve the effects of easy observation, easy coating, and easy preparation

Inactive Publication Date: 2014-08-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcoming of the prior art, the purpose of the present invention is to provide a kind of polymer water-based paint that has corresponding characteristics to ultraviolet UV light, to overcome the single function of polymer water-based paint in the prior art, and can not be corresponding to ultraviolet light. question

Method used

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  • Polymer waterborne paint with corresponding features to ultraviolet light
  • Polymer waterborne paint with corresponding features to ultraviolet light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The aqueous dispersion of nanopolymer particles containing spiropyran photochromic molecular groups described in this example is synthesized by a miniemulsion polymerization process, including the following steps:

[0044] 1) Prepare water phase: mix emulsifier, pH buffer solution and water, described emulsifier is sodium dodecylsulfonate, described pH buffer agent is sodium bicarbonate; Wherein sodium lauryl sulfate content 20mmol / L, sodium bicarbonate content 10mmol / L; the rest is water;

[0045] 2) Prepare oil phase: mix monomer, crosslinking agent and co-stabilizer, said monomer is selected from 0.1 part of N-hydroxyethylspiropyranyl methacrylate and 2 parts of methyl methacrylate, so The crosslinking agent is selected from 0.1 part of 1,4-butanediol diacrylate, and the co-stabilizer is 0.05 part of polystyrene with a weight average molecular weight of 5000;

[0046] 3) Mixing and emulsification: the water phase and the oil phase are mixed and emulsified and homog...

Embodiment 2

[0051]Only change the commercially available Dulux white polyacrylate interior wall latex paint into Dulux white polyacrylate exterior wall white latex paint in step 2) of embodiment 1, and the rest are identical to embodiment 1.

[0052] Apply the polymer water-based paint prepared above to pure wood pulp thick paper by heat-sealing, and form a film after drying, put it in a transparent plastic bag and hang it at the place where the ultraviolet disinfection lamp is exposed. After a few minutes, the color changes from colorless or Very light purple to dark blue-purple. The color returns to its original light state after hours of exposure to white light.

Embodiment 3

[0054] Only change the cross-linking agent in step 1) of Example 1 into 0.2 part of divinylbenzene, and the rest are identical to Example 1.

[0055] Apply the polymer water-based paint prepared above to pure wood pulp thick paper by heat-sealing, and form a film after drying, put it in a transparent plastic bag and hang it at the place where the ultraviolet disinfection lamp is exposed. After a few minutes, the color changes from colorless or Very light purple to dark blue-purple. The color returns to its original light state after hours of exposure to white light.

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Abstract

The invention discloses a polymer waterborne paint with corresponding features to ultraviolet light. The paint is characterized by including, by weight, 1 part of nano polymer granular aqueous dispersion containing spiropyrane photochromic molecular groups and 1-50 parts of white waterborne paint, wherein the white waterborne paint is acrylate white paint or waterborne polyurethane white paint or alkyd resin white paint. The polymer waterborne paint with an ultraviolet light response feature is designed and synthesized; the synthesized polymer material contains methacrylic acid spiropyrane function groups, so that the polymer waterborne paint represents an ultraviolet photochromic effect feature. The polymer waterborne paint has the advantages of being easy to prepare, having a real-time clear color developing feature and being safe and the like, and has creative value.

Description

technical field [0001] The invention relates to a nanocomposite material, in particular to a polymer water-based paint with corresponding characteristics to ultraviolet light. Background technique [0002] Ultraviolet light Electromagnetic radiation with shorter wavelengths than visible light but longer than X-rays. Ultraviolet light has a wavelength range of 10-400nm in the electromagnetic spectrum. This range begins at the short-wavelength limit of visible light and overlaps with the wavelengths of long-wavelength X-rays. Ultraviolet light is divided into A rays, B rays and C rays (referred to as UVA, UVB and UVC), and the wavelength ranges are 400-315nm, 315-280nm, 280-190nm respectively. Sterilization is the most common function of UV light. Because ultraviolet rays have strong lethality to organisms, it can be used to deal with bacteria and viruses. However, special attention should be paid to the fact that these sterilization equipment can also harm the human body,...

Claims

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Application Information

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IPC IPC(8): C09D133/04C09D175/04C09D167/08C09D7/12
Inventor 张青张沛怡张诣卓周寅宁罗正鸿
Owner SHANGHAI JIAO TONG UNIV
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