A kind of photocurable hydrophobic polyurea nanoparticle and its preparation method and application

A nanoparticle and hydrophobic technology, which is applied in the field of light-cured hydrophobic polyurea nanoparticles and its preparation, can solve the problems of easy precipitation, coating extinction, and affecting the transparency of the coating, and achieve good optical performance, good hydrophobicity, Good wear-resistant and scratch-resistant effect

Active Publication Date: 2022-07-05
SUMDA MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 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 photocurable hydrophobic polyurea nanoparticle and its preparation method and application
  • A kind of photocurable hydrophobic polyurea nanoparticle and its preparation method and application
  • A kind of photocurable hydrophobic polyurea nanoparticle and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 100 parts of toluene / butanone (weight ratio 1:2) into the reactor, then add 32.7 parts of isophorone diisocyanate, stir and disperse while cooling to -10 ° C, add 20 parts of isophorone diisocyanate dropwise Amine, control the temperature to be less than 10 ℃, complete 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, 6.2 parts of perfluoropolyether alcohol, The temperature was raised to 70°C, and kept for 2 hours; cooled to room temperature, filtered, 50 parts of toluene / butanone (weight ratio 1:2) was added to the filter cake, ultrasonically dispersed, filtered, and dried to obtain light-cured hydrophobic polyurea nanoparticles UAN -1.

Embodiment 2

[0041] Add 100 parts of methylcyclohexane / butyl acetate (weight ratio 1:1) into the reactor, then add 30 parts of dicyclohexylmethane diisocyanate, stir and disperse while cooling to -10 ° C, dropwise add 15.6 part of isophorone diamine, control the temperature to be less than 10 ℃, complete 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, 2 parts of hydroxybutyl acrylate, 4.8 parts of Parts of hydroxyethyl end-capped polydimethylsiloxane, heated to 70° C., incubated for 2 hours; cooled to room temperature, filtered, and added 50 parts of methylcyclohexane / butyl acetate (weight ratio 1:1 to the filter cake) ), ultrasonically dispersed, filtered, and dried to obtain photocurable hydrophobic polyurea nanoparticles UAN-2.

Embodiment 3

[0043]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 to 0 ℃, add 26.8 parts of dodecane dibasic dropwise Amine, control the temperature to be less than 15°C, complete dropwise addition, keep warm, and disperse at high speed for 1.5 hours; add 0.2 parts of p-hydroxyanisole, 0.1 parts of organotin catalyst, 2.5 parts of caprolactone acrylate, 12.5 parts of perfluoropolyether alcohol , heat up to 80 ℃, keep warm 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 to obtain photocurable hydrophobic polyurea nanometers Particle UAN-3.

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Abstract

The invention discloses a light-curing hydrophobic polyurea nanoparticle and a preparation method and application thereof, comprising components: 10-45 parts of diamine, 15-46 parts of isocyanate, 50-180 parts of solvent, 3 parts of hydroxy acrylate ~15 parts, 1~15 parts of organosilicon fluorine component, 0.02~0.5 part of catalyst, 0.02~0.5 part of polymerization inhibitor. In the present invention, polyurea is formed by reacting diamine and isocyanate, and then adding hydroxy acrylate end capping and organic fluorine components to prepare polyurea nano-particles with photocuring function, which overcomes the problems of organic microparticles which are widely used at present. The influence of spheres and inorganic nanoparticles on the optical properties of the coating. The coating made of the photocurable hydrophobic polyurea nanoparticles not only has good optical properties, but also provides the coating with better wear resistance and scratch resistance. Wipe and hydrophobic, stain resistance, self-cleaning and other functions.

Description

technical field [0001] The invention relates to the technical field of photocurable materials, in particular to a photocurable hydrophobic polyurea nanoparticle and a preparation method and application thereof. Background technique [0002] At present, organic microspheres are more and more common in the application of coatings, which can provide the coating with functions such as wear resistance and scratch resistance, but its micron-level particle size can easily cause the extinction of the coating, which seriously affects the coating quality. Transparency has a great influence on the optical properties of the coating. Inorganic nanoparticles that are widely used in the market, such as nano-silica, nano-alumina, etc., generally have a relatively high refractive index, which is quite different from the refractive index of the organic component of the coating, which seriously affects the coating. At the same time, the compatibility of inorganic nanoparticles with organic co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/50C08G18/32C08G18/65C08G18/61C09D175/02C09D5/16
CPCC08G18/672C08G18/6685C08G18/5015C08G18/3234C08G18/6529C08G18/61C09D175/02C09D5/1662
Inventor 赵东理刘姗姗孙启龙吴烨飞
Owner SUMDA MATERIAL TECH CO LTD
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