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Fluorine-containing light-cured waterborne coating and preparation method thereof

A water-based coating, light-curing technology, applied in the coating field, can solve the problems of low production efficiency, application limitations, poor stain resistance of exterior wall coatings, etc.

Inactive Publication Date: 2013-10-23
恒昌涂料(惠阳)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although light-cured water-based coatings have made some progress in production technology and application fields, there is still little progress in solving problems such as low production efficiency, high curing temperature, and mechanical properties of paint films.
In this regard, Chinese patent application No. 86101022 discloses a hydrophilic material for offset printing plates. In this invention, a layer of hydrophilic coating containing acrylamide methacrylate phosphoric acid is coated on an aluminum substrate to form a photosensitive printing plate. Substance support, but the hydrophilic coating can only be coated after the substrate has undergone complex treatment, the process time is long, and its application is greatly limited
The Chinese patent application number 101685864 discloses a stable hydrophilic coating on carbon-based materials for fuel cells, but the coating needs to be treated with ozone or plasma to obtain an active surface, the process is complicated and the process takes a long time
The Chinese patent with application number 101798479 provides a water-based anti-corrosion coating for hydrophilic coated aluminum foil, which meets the corrosion resistance requirements of the coating. However, the water-based coating needs high temperature curing during coating and is not suitable for some heat-sensitive substrates. coating
The Chinese patent application number 102911581 provides an organic-inorganic composite hydrophilic coating with super hydrophilic and remarkable self-cleaning effect, which solves the problem of poor stain resistance of exterior wall coatings, but its mechanical properties and sustained hydrophilicity are not strong ideal

Method used

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  • Fluorine-containing light-cured waterborne coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0055] Embodiment 1: Synthesis of photoactive fluorine-containing (trifluoroethyl methacrylate) hydrophilic resin

[0056] Weigh 5.55 g (50 mmol) of vinylpyrrolidone and 0.5 g (2.9 mmol) of trifluoroethyl methacrylate into a three-necked flask, then add N-[3-(4- Benzoylbenzamido) propyl] methacrylamide 0.18g (0.52mmol), put nitrogen into the flask to remove the air, then add azobisisobutyronitrile 0.1g (0.6mmol), the liquid surface After being filled with nitrogen, the container was closed and heated at 55°C for 12 hours. After the reaction, the solution was precipitated with ether, and the precipitate was filtered out and dried in an oven to obtain 5 g of a white solid. The detected photoactive group benzophenones is 0.1 mmol / g.

Embodiment 2

[0057] Embodiment 2: Synthesis of photoactive fluorine-containing (tetrafluoropropyl methacrylate) hydrophilic resin

[0058] Weigh 5.55 g (50 mmol) of vinylpyrrolidone and 0.5 g (2.5 mmol) of tetrafluoropropyl methacrylate into a three-necked flask, then add N-[3-(4- Benzoylbenzamido) propyl] methacrylamide 0.18g (0.52mmol), put nitrogen into the flask to remove the air, add 0.1g (0.6mmol) of azobisisobutyronitrile, the liquid surface is full Close the container after nitrogen gas, and heat at 70°C for 30 hours. After the reaction, the solution was precipitated with ether, and the precipitate was filtered out and dried in an oven to obtain 5 g of a white solid. The detected photoactive group benzophenones is 0.1 mmol / g.

Embodiment 3

[0059] Embodiment 3: Synthesis of photoactive fluorine-containing (hexafluorobutyl methacrylate) hydrophilic resin

[0060] Weigh 5.55g (50mmol) of vinylpyrrolidone and 0.5g (2mmol) of hexafluorobutyl methacrylate into a three-necked flask, then add N-[3-(4-benzene Formyl benzamido) propyl] methacrylamide 0.18g (0.52mmol), pass nitrogen into the flask to remove the air, then add azobisisobutyronitrile 0.1g (0.6mmol), the liquid surface is full The container was closed after nitrogen, and heated at 50°C for 48 hours. After the reaction, the solution was precipitated with ether, and the precipitate was filtered out and dried in an oven to obtain 5 g of a white solid. The detected photoactive group benzophenones is 1 mmol / g.

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Abstract

The invention discloses a fluorine-containing light-cured waterborne coating and a preparation method thereof. The light-cured waterborne coating is prepared from the components in parts by weight: 100 parts of solvent (a), 1-69 parts of light-cured fluorine-containing resin (b) and 0.05-3.45 parts of cross-linking agent (c), wherein the light-cured fluorine-containing resin (b) is prepared by virtue of copolymerization of fluorine monomers, N-vinyl pyrrolidone and monomers containing light active groups. The fluorine-containing light-cured waterborne coating has the excellent performances of short curing time, strong hydrophilicity and high lubricity.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a fluorine-containing photocurable water-based coating and a preparation method thereof. Background technique [0002] With the development of science and technology and people's emphasis on environmental protection, it has become a trend in the field of coatings to develop high-performance, pollution-free and environmentally friendly coatings. Light-curing solvent coatings use light energy to initiate polymerization and cross-linking reactions between low-molecular prepolymers or oligomers in the coatings and monomer molecules as reactive diluents to obtain hardened paint films. The advantages are: high energy utilization , Fast curing speed and high production efficiency. Water-based coatings use water as a solvent. The advantages are: only a small amount of low-toxic alcohol ethers are used as organic solvents, which is environmentally friendly and safe; it can be directly c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D4/06C08F226/10C08F220/22C08F220/60C07C231/02C07C233/78
Inventor 吴春晖王小妹杨爱军凌远龙
Owner 恒昌涂料(惠阳)有限公司
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