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A UV curable coating

A technology of curing coatings and ultraviolet light, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of weak weather resistance, shortened substrate protection, aging of cured film layers, etc., to solve the problem of short service life , Good effect of chemical corrosion resistance

Active Publication Date: 2012-02-22
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unreacted trace photoinitiator will continue to decompose the residual photoinitiator after long-term sunlight exposure in daily use (especially outdoor use), and the free radicals formed will decompose some chemical bonds of the molecular chain constituting the coating material; The unreacted residual double bonds in the cured coating will be decomposed by sunlight for a long time, both of which will cause the aging of the cured film layer, such as brittleness, reduced strength, etc., which will cause the cured film to lose or shorten. protection of
[0004] There are many reports of UV curing coatings for various substrates. A major defect of these known UV curing coatings is that their weather resistance is relatively fragile, especially when they are used outdoors. Therefore, to solve the problem of UV curing The weatherability of coatings is already a major research topic in the industry

Method used

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  • A UV curable coating
  • A UV curable coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Polyurethane acrylate resin CN984 25 parts,

[0031] Active diluent TMPTA 8 parts,

[0032] Active diluent TPGDA 4 parts,

[0033] Active diluent HDDA 8 parts,

[0034] Photoinitiator Irgacure 184 2 parts,

[0035] Defoamer BYK020 0.1 parts,

[0036] Leveling agent BYK307 0.08 parts,

[0037] Nano zinc oxide 1.5 parts,

[0038] Nano-tin antimony oxide 1.0 parts,

[0039] Stir and mix 25 parts of prepolymer resin CN984, 8 parts of reactive diluent TMPTA, 4 parts of TPGDA, 8 parts of HDDA, 2 parts of photoinitiator Irgacure 184, 0.08 parts of leveling agent BYK307 and 0.1 part of defoamer BYK020 , adding 1.5 parts of nano-zinc oxide and 1.0 part of nano-tin antimony oxide and fully stirring and mixing uniformly to obtain a UV-curable coating.

[0040] The paint obtained above was coated on PET by a dip coating method, leveled at 80°C under infrared rays, and cured by irradiation with a 1kw high-pressure mercury lamp to obtain a UV-cured film. Measure its performan...

Embodiment 2

[0042] Polyurethane acrylate resin CN9001 30 parts,

[0043] Active diluent TMPTA 6 parts,

[0044] Active diluent TPGDA 3 parts,

[0045] Active diluent HDDA 6 parts,

[0046] Photoinitiator Irgacure 184 1 part,

[0047] Defoamer BYK020 0.1 parts,

[0048] Leveling agent BYK307 0.08 parts,

[0049] 1.5 parts of nano-titanium oxide,

[0050] Nano-tin antimony oxide 1.0 parts,

[0051] Stir and mix 30 parts of prepolymer resin CN9001, 6 parts of reactive diluent TMPTA, 3 parts of TPGDA, 6 parts of HDDA, 1 part of photoinitiator Irgacure 184, 0.08 parts of leveling agent BYK307 and 0.1 part of defoamer BYK020 , adding 1.5 parts of nano-titanium oxide and 1.0 part of nano-tin antimony oxide and fully stirring and mixing uniformly to obtain a UV-curable coating.

[0052] The paint obtained above was coated on PET by an extrusion coating method, leveled at 80° C. under infrared rays, and cured by irradiation with a 1 kw high-pressure mercury lamp to obtain a UV-cured film. ...

Embodiment 3

[0054] Polyurethane acrylate resin CN9004 35 parts,

[0055] 4 parts of reactive diluent TMPTA,

[0056] Active diluent TPGDA 2 parts,

[0057] Active diluent HDDA 4 parts,

[0058] Photoinitiator Irgacure 1173 2.5 parts,

[0059] 1.0 parts of nano-titanium oxide,

[0060] Nano-tin antimony oxide 1.0 parts,

[0061] 35 parts of prepolymer resin CN9004, 4 parts of reactive diluent PETA, 2 parts of TPGDA, 4 parts of HDDA, 2.5 parts of photoinitiator Irgacure 1173, 1.0 parts of nano-titanium oxide, and 1.0 part of nano-tin antimony oxide were fully stirred and mixed evenly to obtain UV curable coatings.

[0062] The paint obtained above was coated on PET by an extrusion coating method, leveled at 80° C. under infrared rays, and cured by irradiation with a 1 kw high-pressure mercury lamp to obtain a UV-cured film. Measure its performance, see Table 1.

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Abstract

A kind of ultraviolet curable coating, it comprises acrylic prepolymer resin, reactive diluent, photoinitiator and inorganic nano filler, and described inorganic nano filler comprises the inorganic nano filler that can block ultraviolet ray and the inorganic nano filler that can block infrared ray, two The weight ratio of those is 2:1~1:2. The coating has fast curing speed, good weather resistance, water resistance and chemical corrosion resistance, can be used outdoors for a long time, and is suitable for various plastic substrates such as PET, PC, PVC, PP and other plastic substrates.

Description

technical field [0001] The invention relates to an ultraviolet light curing paint, in particular to an ultraviolet light curing paint which has excellent weather resistance and chemical corrosion resistance and can be used outdoors for a long time. Background technique [0002] Ultraviolet (UV) curing coating is a new type of coating developed in the 1960s. Compared with traditional coatings, UV curing coatings have no pollution from solvent volatilization and high energy utilization. They are widely used in household appliances, wooden furniture, Plastic materials, instruments and meters, auto parts, oil pipelines and other aspects are one of the fastest-growing coating varieties, and are known as green and environmentally friendly coatings in the 21st century. [0003] However, since the molecular structure of the main composition of the UV curing coating has double bonds that can undergo chemical reactions, the curing mechanism is that the photoinitiator in the coating co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D167/06C09D7/12
Inventor 秦长喜李刚张学建邹竞
Owner CHINA LUCKY FILM CORP
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