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Heat and ultraviolet dual-curing varnish and preparation method thereof

A dual-curing, ultraviolet technology, applied in the field of coatings, can solve the problems of easy adhesion of dust, poor chemical resistance, poor cosmetics resistance, etc., to achieve the effect of increasing light curing speed, increasing cross-linking density, and reducing production costs

Inactive Publication Date: 2021-08-13
东莞大宝化工制品有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are three common ways to cure varnishes on the market, namely UV curing, heat curing, and dual curing of heat and UV. The shortcomings of poor cosmetics and poor chemical resistance; UV-curable varnishes have narrow applicability to metal products, unstable performance, and are difficult to adapt to a variety of metal materials at the same time. It is necessary to formulate specific UV-curable varnishes for different metal materials and have adhesion. Poor defects; while the common thermal and UV dual-curing varnishes on the market are mainly realized by UV curing of photosensitive resins combined with thermal curing of polyurethane resins, which are used for coating plastic materials, not suitable for metal products, and need to be prepared into Multi-component, before use, mix the multi-components in proportion to coat evenly, and the use time is limited

Method used

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  • Heat and ultraviolet dual-curing varnish and preparation method thereof
  • Heat and ultraviolet dual-curing varnish and preparation method thereof
  • Heat and ultraviolet dual-curing varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of thermal and ultraviolet dual-curing varnish, comprises the raw material of following parts by weight:

[0032]

[0033] In this embodiment, the thermosetting acrylic resin is a solvent-based thermosetting acrylic resin with a solid content of 60%.

[0034] In this embodiment, the amino resin is butyl etherified amino resin with a solid content of 60%.

[0035] In this embodiment, the photoinitiator is a mixture of 1-hydroxycyclohexyl phenyl ketone and benzophenone, which is used to initiate the UV polymerization reaction of the unsaturated prepolymerization system, and the active hydroxyl group in its molecule makes it very It is easy to react with polyurethane acrylate to improve the reaction efficiency.

[0036] In this embodiment, the organic solvent is one or a combination of xylene, ethyl ester, butyl ester, and isopropanol.

[0037] In this embodiment, the epoxy resin is a bisphenol A type epoxy resin with a solid content of 75%, good flexibility, a...

Embodiment 2

[0046] A kind of thermal and ultraviolet dual-curing varnish, comprises the raw material of following parts by weight:

[0047]

[0048] In this embodiment, the thermosetting acrylic resin is a solvent-based thermosetting acrylic resin with a solid content of 55%.

[0049] In this embodiment, the amino resin is butyl etherified amino resin with a solid content of 58%.

[0050] In this embodiment, the photoinitiator is a mixture of 1-hydroxycyclohexyl phenyl ketone and benzophenone, which is used to initiate the UV polymerization reaction of the unsaturated prepolymerization system, and the active hydroxyl group in its molecule makes it very It is easy to react with polyurethane acrylate to improve the reaction efficiency.

[0051] In this embodiment, the organic solvent is one or a combination of xylene, ethyl ester, butyl ester, and isopropanol.

[0052] In this embodiment, the epoxy resin is bisphenol A type epoxy resin with a solid content of 70%, good flexibility, and...

Embodiment 3

[0061] A kind of thermal and ultraviolet dual-curing varnish, comprises the raw material of following parts by weight:

[0062]

[0063]

[0064] In this embodiment, the thermosetting acrylic resin is a solvent-based thermosetting acrylic resin with a solid content of 65%.

[0065] In this embodiment, the amino resin is butyl etherified amino resin with a solid content of 62%.

[0066] In this embodiment, the photoinitiator is a mixture of 1-hydroxycyclohexyl phenyl ketone and benzophenone, which is used to initiate the UV polymerization reaction of the unsaturated prepolymerization system, and the active hydroxyl group in its molecule makes it very It is easy to react with polyurethane acrylate to improve the reaction efficiency.

[0067] In this embodiment, the organic solvent is one or a combination of xylene, ethyl ester, butyl ester, and isopropanol.

[0068] In this embodiment, the epoxy resin is a bisphenol A type epoxy resin with a solid content of 80%, good fl...

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Abstract

The invention relates to the technical field of coatings, in particular to heat and ultraviolet dual-curing varnish and a preparation method thereof, and the heat and ultraviolet dual-curing varnish is prepared from the following raw materials in parts by weight: 20-30 parts of thermosetting acrylic resin, 10-15 parts of amino resin, 20-30 parts of urethane acrylate, 2-5 parts of epoxy resin, 0-7 parts of matting powder, 0.2-0.5 part of a flatting agent, 2-4 parts of a photoinitiator, 10-16 parts of an acrylate monomer and the balance of an organic solvent. The heat and ultraviolet dual-curing varnish is suitable for the surface of a metal product, and has the characteristics of high hardness, good wear resistance, good adhesive force, high drying speed and excellent chemical resistance and cosmetic resistance.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a thermal and ultraviolet dual-curing varnish and a preparation method thereof. Background technique [0002] At present, there are three common ways to cure varnishes on the market, namely UV curing, heat curing, and dual curing of heat and UV. The shortcomings of poor cosmetics and poor chemical resistance; UV-curable varnishes have narrow applicability to metal products, unstable performance, and are difficult to adapt to a variety of metal materials at the same time. It is necessary to formulate specific UV-curable varnishes for different metal materials and have adhesion. Poor defects; while the common thermal and UV dual-curing varnishes on the market are mainly realized by UV curing of photosensitive resins combined with thermal curing of polyurethane resins, which are used for coating plastic materials, not suitable for metal products, and need to be prepared into Multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D175/14C09D7/80C09D7/65C09D163/02C09D161/32
CPCC09D133/04C09D175/14C09D7/80C09D7/65C08L2205/035C08L75/14C08L63/00C08L61/32C08K3/36C08L33/04
Inventor 张来兵
Owner 东莞大宝化工制品有限公司