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Multifunctional UV-curable coating

An ultraviolet light and multi-functional technology, applied in coatings, conductive coatings, polyester coatings, etc., can solve the problems of reduced adhesion between coatings and substrates, poor adhesion, insufficient durability, etc., to avoid Decreases coating adhesion, reduces surface resistance, and improves anti-fouling properties

Inactive Publication Date: 2020-03-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of application standards, there is an urgent need in the market for ultraviolet (UV) curable coatings with long-lasting self-cleaning, anti-fouling, aging resistance, and scratch resistance. However, most UV-curable coatings currently used It can only improve the performance of a certain aspect in a targeted manner according to the purpose
For example, in order to avoid electrostatic adsorption of dust, adding an antistatic agent or a sufficient amount of conductive filler to the UV-curable coating will either cause insufficient durability or cause poor adhesion to the substrate; adding titanium dioxide as a photocatalyst, Although self-cleaning, it reduces the adhesion of the coating to the substrate

Method used

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Examples

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preparation example Construction

[0039]In the multifunctional UV-curable coating according to the present invention, the preparation method of the nano-silica / hexafunctional urethane acrylate hybrid copolymer includes the steps: (1) at a temperature of 105-110°C and a vacuum degree of 0.08- Under the condition of 0.1MPa, after heating and drying dipentaerythritol for 3-4 hours, cool to 80-90° C. to obtain pretreated dipentaerythritol; (2) in molar parts, 100 parts of pretreated Put dipentaerythritol and 1-3 parts of catalyst into the reaction container together, after stirring evenly, add 600 parts of isophorone diisocyanate in molar parts in batches, keep stirring, and react 2- 3 hours, to obtain the pre-reaction base liquid; (3) in parts by mole, in the pre-reaction base liquid described in step (2), under the state of keeping stirring, add 10-20 parts of nano silicon dioxide, keep the temperature 80-90°C, react for 2-3 hours to obtain the grafting reaction base liquid; (4) in molar fractions, to the grafti...

Embodiment 1

[0052] Multifunctional UV-curable coating, composed of the following raw materials in mass percentage:

[0053]

[0054] The preparation method of nano-silica / hexafunctional urethane acrylate hybrid copolymer comprises steps: (1) under the conditions of temperature 105°C and vacuum degree 0.08MPa, dipentaerythritol was heated and dried for 3 hours, then cooled to 80°C to obtain the prepared Treated dipentaerythritol; (2) in molar fractions, 100 parts of pretreated dipentaerythritol and 1 part of catalyst described in step (1) are put into the reaction vessel together, after stirring evenly, add 600 molar fractions in batches Parts of isophorone diisocyanate, stirring constantly, reacted for 2 hours at a temperature of 60°C to obtain a pre-reaction base liquid; (3) in parts by mole, to the pre-reaction base liquid described in step (2) , under the state of keeping stirring, add 10 parts of nano-silica, keep the temperature at 80° C., react for 2 hours, and obtain the graftin...

Embodiment 2

[0057] Multifunctional UV-curable coating, composed of the following raw materials in mass percentage:

[0058]

[0059]

[0060] The preparation method of nano-silica / hexafunctional urethane acrylate hybrid copolymer comprises the steps: (1) heating and drying dipentaerythritol for 4 hours at a temperature of 110° C. and a vacuum of 0.1 MPa, and then cooling to 90° C. to obtain the prepared Treated dipentaerythritol; (2) in molar fractions, 100 parts of pretreated dipentaerythritol and 3 parts of catalysts described in step (1) are put into the reaction vessel together, after stirring evenly, add 600 molar fractions in batches Parts of isophorone diisocyanate, stirring constantly, reacted for 3 hours at a temperature of 70°C to obtain a pre-reaction base liquid; (3) in parts by mole, to the pre-reaction base liquid described in step (2) , under the state of keeping stirring, add 20 parts of nano-silica, keep the temperature at 90° C., and react for 3 hours to obtain the...

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Abstract

The invention provides a multifunctional ultraviolet curing coating which is composed of the following raw materials in percentage by mass: 20 to 45% of modified multi-functional groups photocurable oligomer, 4 to 30% of organic silicone photocurable oligomer, 4 to 20% of organic fluorine photocurable oligomer, 20 to 30% of a reactive diluent, 5 to 8% of a polymerizable antistatic agent, and 2 to5% of a photoinitiator. The multifunctional ultraviolet curing coating of the invention has the advantages of long-lasting self-cleaning, anti-fouling, weather resistance, aging resistance, scratch resistance and the like, which prevents the existing ultraviolet curing coating from the deficiency adhesion to the substrate and easy peeling due to excessive additives.

Description

technical field [0001] The invention relates to the field of ultraviolet light curing coatings, more specifically, to a multifunctional ultraviolet light curing coating. Background technique [0002] Some polymer materials, such as PET, PC and PMMA, have low surface hardness and poor wear resistance, resulting in a greatly shortened service life. It is necessary to coat the surface with protective materials to improve its performance. UV-curable coating has the advantages of fast curing speed, low production energy consumption, less pollution, and superior coating performance. It has become one of the main protective coatings for material surfaces at present. With the continuous improvement of application standards, there is an urgent need in the market for ultraviolet (UV) curable coatings with long-lasting self-cleaning, anti-fouling, aging resistance, and scratch resistance. However, most UV-curable coatings currently used It can only improve the performance of a certain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D163/00C09D133/04C09D5/24C09D5/16C09D7/61C09D7/63C09D7/65
CPCC08K2003/2241C08K2201/011C08L2205/025C08L2205/035C09D5/1618C09D5/1662C09D5/1668C09D5/1687C09D5/24C09D143/04C09D163/00C09D167/06C08L75/14C08L33/16C08K3/36C08K3/22C08K5/07C08L63/00C08L67/06
Inventor 贺建芸张景慧佟金戈杨卫民丁玉梅谢鹏程
Owner BEIJING UNIV OF CHEM TECH
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