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Ultraviolet curing coating and preparation method thereof

A technology for curing coatings and ultraviolet light, applied in polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., which can solve the problems of low initiation efficiency, little production, and insufficient film curing.

Inactive Publication Date: 2016-02-17
展辰新材料集团股份有限公司 +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the improvement of people's requirements for energy saving and environmental protection, the requirements for product performance are also getting higher and higher. LED-cured UV-curable coatings have become a research hotspot. The energy absorbed by the agent at the two wavelengths of 365nm and 395nm is very good, and it can only generate few free radicals, and the initiation efficiency is very low, which is not enough for the paint film to cure completely.

Method used

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  • Ultraviolet curing coating and preparation method thereof
  • Ultraviolet curing coating and preparation method thereof
  • Ultraviolet curing coating and preparation method thereof

Examples

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preparation example Construction

[0044] The present invention also provides a preparation method of the above-mentioned UV-curable coating, comprising: 30-80 parts by weight of UV resin, 3-15 parts by weight of photoinitiator, 5-30 parts by weight of monomer, 0-15 parts by weight The matting powder in parts by weight is mixed with 0-30 parts by weight of pigment to obtain a UV-curable coating; the UV resin is selected from bisphenol A epoxy acrylate resin, polyester acrylic resin, polyurethane acrylic resin and silicone resin. One or more; the photoinitiator is selected from one of aromatic ketone photoinitiators, α-hydroxy ketone derivatives, benzyl, acyl phosphorus oxide photoinitiators and acyl phosphorus oxide derivatives One or more; the monomer is an acrylic monomer and / or a modified acrylic monomer.

[0045] According to the present invention, it is preferable to add one of 0.5 to 5 parts by weight of dispersant, 0.2 to 0.5 parts by weight of defoamer, 0.1 to 1 part by weight of leveling agent and 0.1 ...

Embodiment 1

[0051] The contents of each component of the UV-curable coating are shown in Table 1.

[0052] The content of each component of UV-curable coating in table 1 embodiment 1

[0053]

[0054] The 100% UV resin is Cytec UV resin, the dispersant is BYK-103, the defoamer is BYK-055, the leveling agent is BYK358, the anti-settling agent is Degussa brand R-972, and the photoinitiator is Ciba The brand is 1173, the matting agent is Degussa brand OK-500, the titanium dioxide is titanium dioxide DuPont brand R-760, and the monomer is polyacrylic acid monomer of Cytec.

[0055] Stir 100% UV resin, some monomers, defoamer, dispersant and photoinitiator evenly, then add matting powder and titanium dioxide to fully disperse, finally add leveling agent and anti-settling agent to disperse evenly, add the remaining mono The viscosity of the monomer is adjusted to obtain a UV-curable coating, and the mass ratio of some monomers to the remaining monomers is 20:1.

[0056] Coat the UV-curable...

Embodiment 2

[0062] The content of each component of the UV-curable coating is shown in Table 3, and the others are the same as in Example 1.

[0063] The content of each component of UV-curable coating in the embodiment 2 of table 3

[0064]

[0065] The performance of the paint film in Example 2 was detected, and the results obtained are shown in Table 4.

[0066] Paint film performance testing result in table 4 embodiment 2

[0067]

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PUM

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Abstract

The invention provides an ultraviolet curing coating and a preparation method thereof. The ultraviolet curing coating is prepared from, by weight, 30-80 parts of UV resin, 3-15 parts of a photoinitiator and 5-30 parts of monomers, wherein the UV resin is selected from one or more of bisphenol A epoxy acrylic resin, polyester acrylic resin, polyurethane acrylic resin and organic silicon resin, the photoinitiator is selected from one or more of an aromatic ketone photoinitiator, an alpha-hydroxy ketone derivative, benzil, an acyl phosphorus oxide photoinitiator and an acyl phosphorus oxide derivative, and acrylic monomers and / or modified acrylic monomers are adopted as the monomers. Compared with the prior art, the ultraviolet curing coating has the advantages that the specific photoinitiator can be motivated to be decomposed into free radicals under LED irradiation, the free radicals interact with the UV resin and the monomers to be subjected to a cross-linking reaction to enable the ultraviolet curing coating to be cured, and meanwhile an obtained coating film is higher in flatness, capable of resisting scraping, better in flexibility and higher in hardness.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to an ultraviolet curing coating and a preparation method thereof. Background technique [0002] UV curing coating is an environmentally friendly and energy-saving coating with no or low volatile organic compound (VOC) emissions, fast curing rate, energy saving and environmental protection, low curing temperature, high production efficiency, and is suitable for assembly line production. [0003] UV-curable coatings are mainly composed of photocurable resins, photoinitiators and reactive diluents, and some additives are added at the same time. Among them, the photocurable resin is one of the main active components, and reacts under the trigger of the photoinitiator to form a network polymer, which mainly includes unsaturated polyester, acrylic resin, polyurethane acrylic resin and epoxy acrylic resin. Photoinitiators are a class of substances that easily absorb ultraviolet light en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/10C09D167/06C09D175/14C09D183/04C09D7/12
CPCC09D163/10C08L2205/035C09D7/63C08L67/06C08L75/14C08L83/04C08K13/02C08K2003/2241
Inventor 汪汉军李晟陈传印陈寿生
Owner 展辰新材料集团股份有限公司
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