High-solid-content photocuring fluorinated polyurethane-acrylate (PFUA) coating and preparation method thereof

A polyacrylate and acrylate technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of inability to water-based, slow curing speed, difficult photocuring efficiency, etc., and achieve small molecular weight distribution and moderate molecular weight. Effect

Active Publication Date: 2013-04-24
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent CN101210145 has prepared acrylate light-cured fluorocarbon coatings, which have the characteristics of plump paint film, rich colors, high hardness and good weather resistance and stain resistance, but they cannot be water-based and must be dissolved in a large amount of solvents to form a brush good performance paint
Chinese invention patent CN101497761 prepared a water-based fluorocarbon resin coating that can be cured at room temperature by mixing multi-component comonomers and chlorotrifluoroethylene.

Method used

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  • High-solid-content photocuring fluorinated polyurethane-acrylate (PFUA) coating and preparation method thereof
  • High-solid-content photocuring fluorinated polyurethane-acrylate (PFUA) coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] A high-solid light-curing fluorine-containing polyurethane-polyacrylate coating (PFUA) and a preparation method thereof provided in Example 1 of the present invention include the following steps:

[0034] S1. Preparation of hydroxy fluorinated polyacrylate resin

[0035] In parts by weight, place 2 parts azobisisobutyronitrile, 18 parts methyl methacrylate, 5 parts butyl acrylate, 11 parts hexafluorobutyl methacrylate and 13 parts hydroxyethyl methacrylate The beaker is evenly mixed and transferred to a constant pressure funnel.

[0036] Place 20 parts of butyl acetate solution in a four-necked flask, infuse with nitrogen protection, heat the temperature to 120℃ through a heating mantle to ensure the solvent reflux, turn on the stirring; through the constant pressure funnel, slowly and continuously add the uniformly mixed monomer, 1 The dripping is completed within hours. After the dripping is completed, the reaction temperature is maintained, and the reaction is continued f...

Embodiment 2

[0044] A high-solid light-curing fluorine-containing polyurethane-polyacrylate coating (PFUA) and a preparation method thereof, including the following steps:

[0045] S1. Preparation of hydroxy fluorinated polyacrylate resin

[0046] In parts by weight, mix 2 parts of initiator azobisisobutyronitrile, 10 parts of butyl acrylate, 12 parts of hexafluorobutyl methacrylate, 12 parts of dodecafluoroheptyl methacrylate and 13 parts of methacrylic acid Place the hydroxyethyl ester in a beaker and mix well and transfer it into a constant pressure funnel.

[0047] Put 15 parts of solvent (butyl acetate) in a four-necked flask, pass nitrogen protection, heat the temperature to 110℃~120℃ through a heating mantle to ensure the solvent reflux, turn on the stirring; through the constant pressure funnel, slowly and continuously add dropwise and mix well The monomer is added dropwise in 1 hour. After the dropwise addition is complete, keep the reaction temperature and continue the reaction for 3 h...

Embodiment 3

[0055] A high-solid light-curing fluorine-containing polyurethane-polyacrylate coating (PFUA) and a preparation method thereof, including the following steps:

[0056] S1. Preparation of hydroxy fluorinated polyacrylate resin

[0057] In parts by weight, combine 2 parts of initiator azobisisobutyronitrile and 2 parts of initiator benzoyl peroxide, 10 parts of butyl acrylate, 24 parts of dodecafluoroheptyl methacrylate and 10 parts of hydroxyethyl acrylate Place the ester in a beaker and mix well and transfer it to a constant pressure funnel.

[0058] Place 10 parts of solvent (butyl acetate) in a four-necked flask, pass nitrogen protection, use a heating mantle to heat the temperature to 120℃ to ensure the solvent reflux, turn on the stirring; through the constant pressure funnel, slowly and continuously add the uniform monomer dropwise , The dripping is complete in 1 hour. After the dripping is complete, keep the reaction temperature and continue the reaction for 2 hours; stop heat...

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Abstract

The invention relates to high-solid-content photocuring fluorinated polyurethane-acrylate (PFUA) coating and a preparation method thereof. The preparation method comprises the following steps: performing double bond solution free radical polymerization on an acrylate monomer to prepare hydroxyl fluorinated polyacrylate (PFA) resin; grafting the synthesized PFA resin through a polyisocyanate monomer and controlling the ratio of the hydroxyl to the isocyanate to prepare polyurethane grafted fluorinated polyacrylate (PFUA) resin blocked by isocyanate; and blocking through a hydroxyl acrylic acid functional monomer to prepare the resin with photocuring activity, wherein the resin has high molecular weight and low viscosity. The prepared coating has high solid content, a simple preparation process, high heat resistance, weather resistance and staining resistance and high photocuring rate, is high-performance coating and can be applied to corrosion resistance of automobile cover faces and steel materials.

Description

Technical field [0001] The invention relates to a resin production method, in particular to a high-solid light-curing fluorine-containing polyurethane-polyacrylate paint and a preparation method thereof. Background technique [0002] With the development of industry, technological progress, environmental protection requirements, and changes in people's aesthetic concepts, the development direction of modern coatings must be towards a multi-functional integration of high performance, high efficiency, high environmental protection and high-end decorative effects. Water-based, light-curing coatings have become the research direction of resin coatings due to their good environmental performance and efficient curing speed; although traditional acrylic coatings, polyurethane coatings and fluorine-containing resin coatings have their own advantages, they still exist Because of the insurmountable shortcomings, how to prepare high-performance resin coatings through the combination of vari...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08G18/62C08F220/22C08F220/14C08F220/18C08F220/28C08F2/38
Inventor 张力蒋海林张耀根
Owner GUANGDONG UNIV OF TECH
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