Preparation method of nanoparticle-modified polyurethane acrylate copolymer resin microemulsion

A polyurethane acrylate copolymer resin and nanoparticle technology, applied in the direction of coating, etc., to achieve the effect of good wettability, strong permeability and small particle size

Active Publication Date: 2015-04-22
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the microemulsion polymerization method of nanoparticle-modified polyurethane acrylate with small particle size and high solid content.

Method used

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  • Preparation method of nanoparticle-modified polyurethane acrylate copolymer resin microemulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Oil phase: 10 parts of isophorone diisocyanate after dehydration, 41 parts of polyether polyol 210 (functionality is 2, molecular weight is 1000), hydrophobic nano-silica (average particle size is 10nm) 0.02 parts, 0.6 parts of hydroxypropyl acrylate, 5 parts of butyl acrylate, 1.2 parts of n-hexadecane, and 0.1 parts of dibutyltin dilaurate were mixed in an ice-water bath and stirred uniformly for 30 minutes to form an oil phase.

[0030] (2) Water phase: Dissolve 5 parts of sodium dodecylsulfonate and 0.02 parts of potassium persulfate in 100 parts of deionized water, mix and stir in an ice-water bath for 30 minutes to form the water phase;

[0031] (3) Microemulsion polymerization: Mix 50 parts of the oil phase obtained in the above step (1) with 50 parts of the water phase obtained in the step (2), heat up to 60°C under anaerobic conditions, and ultrasonically disperse at a speed of 450 rpm Mechanical stirring, microemulsion polymerization 6h. Then the system i...

Embodiment 2

[0033](1) Oil phase: 10 parts of isophorone diisocyanate after dehydration, 22 parts of polyether polyol 210 (functionality is 2, molecular weight is 1000), hydrophobic nano-zinc oxide (average particle size is 10nm) 0.02 1 part, 6 parts of hydroxyethyl acrylate, 10.5 parts of methyl methacrylate, 2.5 parts of n-hexadecane, and 0.05 part of dibutyltin dilaurate were mixed in an ice-water bath and stirred uniformly for 30 minutes to form an oil phase;

[0034] (2) Water phase: Dissolve 10 parts of sodium didodecylphenyl ether disulfonate and 0.1 part of benzoyl peroxide in 100 parts of deionized water, and mix and stir in an ice-water bath for 30 minutes to form the water phase;

[0035] (3) Microemulsion polymerization: Mix 40 parts of the oil phase obtained in the above step (1) with 60 parts of the water phase obtained in the step (2), and heat up to 80°C under anaerobic conditions, ultrasonically disperse at a speed of 500 rpm Mechanical stirring, microemulsion polymerizati...

Embodiment 3

[0037] (1) Oil phase: 10 parts of dicyclohexylmethane diisocyanate after dehydration, 25 parts of polyether polyol 220 (functionality is 2, molecular weight is 2000), hydrophobic nano silica (average particle diameter is 15nm) ) 0.25 parts, 3.5 parts of hydroxyethyl methacrylate, 27 parts of ethyl acrylate, 0.65 parts of n-hexadecane, and 0.02 parts of dibutyltin dilaurate were mixed in an ice-water bath and stirred uniformly for 30 minutes to form an oil phase;

[0038] (2) Water phase: Dissolve 5 parts of sodium stearate or bis(2-ethylhexyl) sodium succinate sulfonate and 0.02 part of azobisisobutylimidazoline hydrochloride in 100 parts of deionized water, and place on ice Mix and stir in a water bath for 30 minutes to form the water phase;

[0039] (3) Microemulsion polymerization: Mix 30 parts of the oil phase obtained in the above step (1) with 70 parts of the water phase obtained in the step (2), and heat up to 70°C under anaerobic conditions, ultrasonically disperse at ...

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Abstract

The invention discloses a preparation method of a nanoparticle-modified polyurethane acrylate copolymer resin microemulsion. The method comprises the following main steps: mixing dehydrated polyalcohol, polyisocyanate monomer, hydrophobic nanoparticles, hydroxy acrylate, acrylate monomer, a co-stabilizer and a catalyst to form an oil phase; dissolving a surfactant and an initiator in deionized water, and mixing to form a water phase; and proportionally mixing the oil phase and water phase, carrying out ultrasonic dispersion, and carrying out microemulsion polymerization. The microemulsion polymerization process is utilized to copolymerize the polyurethane and acrylic resin, and the nanoparticles are introduced to obtain the nanoparticle-modified polyurethane acrylate copolymer resin microemulsion. The emulsion has the advantages of high solid content, small particle size, high storage stability and high coating glossiness, can form a compact film material, and can be used in the fields of high-grade coating protection, corrosion-resistant coatings, infrared stealth coatings, wave-absorbing materials, complex top finishing and the like.

Description

technical field [0001] The invention relates to the field of polymer material synthesis, in particular to a preparation method of nanoparticle-modified polyurethane acrylate copolymer resin microemulsion. Background technique [0002] Polyurethane has the advantages of molecular designability, wear resistance and strong adhesion, but its corrosion resistance is poor; acrylate has excellent light resistance, good gloss, outdoor exposure durability and good corrosion resistance, etc., but its Poor wear resistance and chemical resistance, sticky at high temperature and brittle at low temperature. Polyurethane and acrylate are copolymerized and compounded to effectively combine their respective advantages while also overcoming their shortcomings. The prepared polyurethane acrylate (PUA) resin has excellent mechanical properties, good corrosion resistance, weather resistance, and glossiness it is good. The water-based and high-performance polyurethane acrylate (PUA) meets the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F2/24C08G18/67C08G18/48C08K3/36C08K3/22C08K3/08C09D151/08C09D7/12
Inventor 丁运生丁瑜秋方华高王海利杨善中
Owner HEFEI UNIV OF TECH
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