A kind of photocuring hydrophilic polyurea nanoparticle and its preparation method and application

A nanoparticle and hydrophilic technology, applied in the field of photocurable hydrophilic polyurea nanoparticle and its preparation, can solve the problems of easy precipitation, coating extinction, affecting the transparency of the coating, etc. Good optical performance, good wear resistance and scratch resistance

Active Publication Date: 2022-04-05
SUMDA MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, organic microspheres are becoming more and more common in the application of coatings. They can provide coatings with functions such as wear resistance and scratch resistance, but their micron-level particle sizes can easily cause coating matting, seriously affecting the coating Transparency, which has a great influence on the optical properties of the coating
Inorganic nanoparticles widely used in the market, such as nano-silicon oxide, nano-alumina, etc., generally have a relatively high refractive index, which is relatively different from the refractive index of the organic components of the coating, which seriously affects the coating. Optical transmittance, while the compatibility of inorganic nanoparticles and organic components is relatively poor, and it is easier to precipitate

Method used

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  • A kind of photocuring hydrophilic polyurea nanoparticle and its preparation method and application
  • A kind of photocuring hydrophilic polyurea nanoparticle and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 100 parts of toluene / butanone (weight ratio 1:2) into the reactor, then add 30 parts of isophorone diisocyanate, stir and disperse while cooling down to -10°C, add 18.2 parts of isophorone diisocyanate dropwise Amine, control the temperature below 10°C, after the dropwise addition, keep warm, and disperse at high speed for 2 hours; add 0.2 parts of p-hydroxyanisole, 0.1 part of organotin catalyst, 3 parts of hydroxyethyl acrylate, heat up to 70°C, and keep warm for 2 hours ; Add 3.2 parts of 4-hydroxybutyl sulfonic acid, heat up to 90°C, and keep warm for 2 hours; cool down to room temperature, filter, add 50 parts of toluene / butanone (weight ratio 1:2) to the filter cake, ultrasonically disperse, filter, Dry to obtain light-cured hydrophilic polyurea nanoparticles SUA-1.

Embodiment 2

[0036] Add 100 parts of methylcyclohexane / butyl acetate (weight ratio 1:1) into the reactor, then add 36 parts of dicyclohexylmethane diisocyanate, stir and disperse while cooling down to -10°C, dropwise add 16.1 part of isophorone diamine, control the temperature to less than 10°C, after the dropwise addition, keep warm, and disperse at high speed for 2 hours; add 0.2 part of p-hydroxyanisole, 0.1 part of organic tin catalyst, 3.5 parts of hydroxybutyl acrylate, and heat to 70°C, keep warm for 2 hours; add 5 parts of sodium cyclamate, keep warm at 70°C for 2 hours; cool down to room temperature, filter, add 50 parts of methylcyclohexane / butyl acetate (total ratio 1 : 2), ultrasonically dispersed, filtered, and dried to obtain light-cured hydrophilic polyurea nanoparticles SUA-2.

Embodiment 3

[0038] Add 125 parts of toluene / butyl acetate (mass ratio 1:2) into the reactor, then add 25 parts of hexamethylene diisocyanate, stir and disperse while cooling down to 0°C, add 26.8 parts of dodecane binary Amine, control the temperature below 15°C, after the dropwise addition, keep warm, and disperse at high speed for 1.5 hours; add 0.2 parts of p-hydroxyanisole, 0.1 part of organotin catalyst, 4 parts of caprolactone acrylate, heat up to 80°C, and keep warm for 2 hours ; Add 5 parts of sodium hexamethylenediaminohexacarboxylate, keep warm at 80°C for 2 hours; cool down to room temperature, filter, add 50 parts of toluene / butyl acetate (mass ratio 1:2) to the filter cake, ultrasonically disperse, filter, and dry Dry to obtain photocurable hydrophilic polyurea nanoparticles SUA-3.

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Abstract

The invention discloses a photocurable hydrophilic polyurea nanoparticle and its preparation method and application, comprising components: 10-43 parts of diamine, 13-40 parts of isocyanate, 50-150 parts of solvent, and acrylate with hydroxyl 2-15 parts, 2-15 parts of hydrophilic agent, 0.02-0.5 parts of catalyst, 0.02-0.5 parts of polymerization inhibitor. The present invention forms polyurea by reacting diamine and isocyanate, and then adds hydroxyl acrylate end cap and hydrophilic agent, thereby prepares a kind of polyurea nanoparticle with photocuring function, overcomes the organic microsphere widely used at present and the influence of inorganic nanoparticles on the optical properties of the coating. The coating made of the light-cured hydrophilic polyurea nanoparticles not only has good optical properties, but also can provide better wear and scratch resistance for the coating. Wipe and hydrophilic, anti-fog function.

Description

technical field [0001] The invention relates to the technical field of light-curing materials, in particular to a light-curing hydrophilic polyurea nanoparticle and its preparation method and application. Background technique [0002] Anti-fog materials are more and more widely used in medical equipment, electronic products, automotive glass, etc., and the requirements are getting higher and higher. There are relatively strict requirements on the anti-fog material's wear resistance, scratch resistance, solvent resistance, water resistance and other properties. At present, organic microspheres are becoming more and more common in the application of coatings. They can provide coatings with functions such as wear resistance and scratch resistance, but their micron-level particle sizes can easily cause coating matting, seriously affecting the coating Transparency has a great influence on the optical properties of the coating. Inorganic nanoparticles widely used in the market, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/67C08G18/32C09D175/02
CPCC08G18/672C08G18/3234C08G18/3228C08G18/3857C09D175/02
Inventor 赵东理刘姗姗孙启龙吴烨飞
Owner SUMDA MATERIAL TECH CO LTD
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