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Aqueous silicon dioxide-fluorinated acrylate polyurethane ultraviolet-curing coating, preparation method and application thereof

A technology of fluorinated acrylate and water-based silica, which is applied in the field of water-based silica-fluorinated acrylate polyurethane UV-curable coating and its preparation, can solve the thermal stability, water resistance and corrosion resistance of hybrid materials No research has been done to achieve the effect of excellent mechanical properties, small surface tension and fast curing rate

Inactive Publication Date: 2012-12-12
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical properties of nano-hybrid materials were tested, and the results showed that with the increase of nano-sol content, the mechanical properties and adhesion of hybrid materials were improved, but the performance of hybrid materials such as sample thermal stability, The water resistance and corrosion resistance of the membrane have not been studied

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] In a container equipped with a stirring device, add 29.44g of absolute ethanol, 20.8g of tetraethyl orthosilicate (TEOS) and stir evenly at room temperature, then slowly drop 68.4g of deionized water containing 0.5355g of nitric acid into the container, and set the temperature Rise to 70°C and react for 3 hours. After the sol is cooled, add 23.8351 g of N,N-dimethylformamide (DMF) and continue stirring for 30 minutes to obtain tetraethyl orthosilicate (TEOS) sol.

[0045] In a 500mL four-neck flask equipped with a stirrer, reflux condenser, thermometer and feeding device, add 12.03g of polyether polyol (NJ-330), 0.8864g of dimethylolpropionic acid (DMPA) and 15g of N-methylpyrrolidone (NMP) solvent, heat the system to 60°C, add 5.55g of isophorone diisocyanate (IPDI), dropwise add 0.05g of catalyst dibutyltin dilaurate (T-12), and stir for 30min Finally, raise the temperature of the system to 70°C and continue the reaction for 3 hours; cool down to 60°C, add 3.25 g of h...

Embodiment 2

[0047] In a container equipped with a stirring device, add 29.44g of absolute ethanol, 20.8g of tetraethyl orthosilicate (TEOS) and stir evenly at room temperature, then slowly drop 68.4g of deionized water containing 0.5355g of nitric acid into the container, and set the temperature Rise to 70°C and react for 3 hours. After the sol is cooled, add 23.8351 g of N,N-dimethylformamide (DMF) and continue stirring for 30 minutes to obtain tetraethyl orthosilicate (TEOS) sol.

[0048] In a 500mL four-neck flask equipped with a stirrer, reflux condenser, thermometer and feeding device, add 9.975g of polyether polyol (NJ-330), 0.9907g of dimethylolpropionic acid (DMPA) and 15g of N-methylpyrrolidone (NMP) solvent, heat the system to 60°C, add 5.55g of isophorone diisocyanate (IPDI), dropwise add 0.05g of catalyst dibutyltin dilaurate (T-12), and stir for 30min Finally, raise the temperature of the system to 70°C, continue the reaction for 3 hours, then lower the temperature to 60°C, a...

Embodiment 3

[0050] In a container equipped with a stirring device, add 29.44g of absolute ethanol, 20.8g of tetraethyl orthosilicate (TEOS) and stir evenly at room temperature, then slowly drop 68.4g of deionized water containing 0.5355g of nitric acid into the container, and set the temperature Rise to 70°C and react for 3 hours. After the sol is cooled, add 23.8351 g of N,N-dimethylformamide (DMF) and continue stirring for 30 minutes to obtain tetraethyl orthosilicate (TEOS) sol.

[0051] In a 500mL four-neck flask equipped with a stirrer, reflux condenser, thermometer and feeding device, add 9.975g of polyether polyol (NJ-330), 0.9907g of dimethylolpropionic acid (DMPA) and 15g of N-methylpyrrolidone (NMP) solvent, heat the system to 60°C, add 5.55g of isophorone diisocyanate (IPDI), dropwise add 0.05g of catalyst dibutyltin dilaurate (T-12), and stir for 30min Finally, raise the temperature of the system to 70°C, continue the reaction for 3 hours, then lower the temperature to 60°C, a...

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PUM

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Abstract

The present invention discloses an aqueous silicon dioxide-fluorinated acrylate polyurethane ultraviolet-curing coating, a preparation method and an application thereof, and belongs to the technical field of polymer synthesis. The preparation method comprises: preparing a tetraethyl orthosilicate sol; dissolving polyether polyol in an N-methyl pyrrolidone solution of dimethylol propionic acid; adding hydroxyethyl methacrylate to carry out end capping; adding triethylamine to form a salt to prepare an aqueous polyurethane acrylate prepolymer emulsion; adding hexafluorobutyl acrylate and trimethylolpropane triacrylate to prepare an aqueous fluorinated acrylate polyurethane prepolymer emulsion; adding gamma-methacryloxy propyl trimethoxyl silane to the prepolymer emulsion, mixing, and adding the prepared tetraethyl orthosilicate sol; and finally adding 2-hydroxy-2-methyl-1-propiophenone to prepare the finished product. The coating of the present invention has advantages of rapid curing, excellent mechanical properties, low surface tension, aging resistance, yellowing resistance, good water resistance, and the like, and can be used as coatings for building and furniture.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and relates to a water-based polyurethane acrylate emulsion modification, in particular to a water-based silicon dioxide-fluorinated acrylate polyurethane ultraviolet curing coating and its preparation method and application. Background technique [0002] Traditional water-based polyurethane acrylate (WPUA) mostly adopts thermosetting molding process, which has the disadvantages of long curing time and high energy consumption; UV curing molding process has the advantages of fast curing speed, energy saving and high production efficiency, and water-based UV curing The system can obtain extremely thin coatings (suitable for general coating methods) by adjusting the solid content of the formula. It has many advantages such as easy cleaning of equipment, convenient storage and transportation, non-combustibility, high safety and reduced fire hazards. Light-curing coatings are environmentally...

Claims

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Application Information

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IPC IPC(8): C09D175/14C09D7/12C08G18/83C08G18/68C08G18/66C08G18/48
Inventor 邱凤仙王莹莹汪青杨冬亚徐吉成
Owner JIANGSU UNIV
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