CN109354976B - Weather-resistant UV (ultraviolet) -composite laser coating composition - Google Patents
Weather-resistant UV (ultraviolet) -composite laser coating composition Download PDFInfo
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- CN109354976B CN109354976B CN201811125545.XA CN201811125545A CN109354976B CN 109354976 B CN109354976 B CN 109354976B CN 201811125545 A CN201811125545 A CN 201811125545A CN 109354976 B CN109354976 B CN 109354976B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
- C09D163/10—Epoxy resins modified by unsaturated compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/06—Unsaturated polyesters having carbon-to-carbon unsaturation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention provides a weather-resistant UV-composite laser coating composition which comprises the following components in parts by weight: 30-55 parts of light curing resin, 30-65 parts of photopolymerization monomer, 2-6 parts of photoinitiator, 0.1-2 parts of light stabilizer and 0.1-3 parts of other auxiliary agents. The weather-resistant UV-composite laser coating also has the following beneficial effects: 1. the PET laser film can be kept from yellowing for a long time and the decorative effect of the laser film is not influenced due to the light stabilizer; 2. the weather-resistant UV-composite laser coating composition coating is easier to separate from a template, and is beneficial to manufacturing a composite film with strong stereoscopic impression of laser patterns; the coating has good film forming property and good aging resistance; the finished product rate of the coating is high, which is beneficial to improving the production efficiency; 3. the anti-counterfeiting and decorative effects of the laser film can be kept for a long time.
Description
Technical Field
The invention relates to the field of UV (ultraviolet) photocureable coating, in particular to a weather-resistant UV-composite laser coating composition.
Background
The PET laser film always occupies a place in the packaging field by virtue of the special functionality, strong metal feeling of appearance and dazzling laser effect, and is widely applied to novel outer packaging materials of cigarettes, wines, foods, cosmetics, tea leaves, gifts and the like. In the field of household appliances, in order to have better appearance and individuation, the PET laser film is gradually used in the housing of the household appliances, but the application of the household appliance field is different from the application of the packaging field, and the PET laser film is required to have long-term stability, and the laser pattern does not yellow for a long time.
The common laser aluminized film absorbs ultraviolet rays to initiate self-oxidation, so that polymers are degraded, and the appearance and physical and mechanical properties of the product are deteriorated, wherein the process is called photooxidation-reduction or photoaging. The laser film prepared from the weather-resistant UV-composite laser coating composition can keep the PET laser film from yellowing for a long time and does not influence the decorative effect of the laser film because the coating contains a light stabilizer.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a weather-resistant UV-composite laser coating composition; the laser pattern composite film made of the weather-resistant UV-composite laser coating is not easy to yellow after long-term use, and can keep the decorative effect of the PET laser film for a long time.
The purpose of the invention is realized by the following technical scheme:
the invention provides a weather-resistant UV-composite laser coating composition which comprises the following components in parts by weight:
preferably, the composition comprises the following components in parts by weight:
preferably, the light-cured resin is one or more of epoxy acrylic resin and polyester acrylic resin.
Preferably, the light stabilizer is one or a mixture of more of benzophenone light stabilizers, salicylic acid light stabilizers, hindered amine light stabilizers and benzotriazole light stabilizers.
More preferably, the light stabilizer is one or a mixture of more of LQ-292, TINUVIN400, Tinuvin 770DF, CHIMASSORB 81, TINUVIN 328, TINUVIN 234, TINUVIN 783, Chimassorb 944, CHIMASSORB 119FL, Chimassorb 2020, TINUVIN 326, TINUVIN 783, CYASORB THT 4611, 4801, 4802, CYASORB UV-2908, 3346, THT 7001EF, CYASORB UV-6408, THT 6435 and 6460.
More preferably, the light stabilizer is a compound of a hindered amine light stabilizer (such as LQ-292) and a benzotriazole light stabilizer (such as TINUVIN400) in a weight ratio of (1-2) to (2-3).
Preferably, the photopolymerization monomer is a compound of bifunctional methacrylate, bifunctional acrylate and multifunctional methacrylate in a weight ratio of 1 (2-4) to (2-3).
Preferably, the bifunctional methacrylate is one or more of tripropylene glycol dimethacrylate, ethoxylated bisphenol A dimethacrylate and ethylene glycol dimethacrylate; the difunctional acrylate is one or more of dipropylene glycol diacrylate, neopentyl glycol diacrylate and ethoxylated bisphenol A diacrylate; the multifunctional methacrylate is one or more of trimethylolpropane trimethacrylate and ethoxylated trimethylolpropane trimethacrylate.
More preferably, the photoinitiator is one or more of 1-hydroxycyclohexyl phenyl ketone (e.g., Irgacure 184), 2-hydroxy-2-methyl-1-phenyl-1-propanone (e.g., Darocur 1173), 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide (e.g., Darocur TPO), phenyl bis (2,4, 6-trimethylbenzoyl) phosphine oxide (e.g., Irgacure 819), benzoin anisole (e.g., Irgacure 651).
Preferably, the other auxiliary agents are one or more of a leveling agent, a defoaming agent and a polymerization inhibitor.
Preferably, the leveling agent is gamma- (2, 3-epoxypropoxy) propyl trimethoxy silane (such as KH-560) or vinyl trimethoxy silane (such as A-171, BYK-3510, BYK-3530, BYK-1790); the defoaming agent is acrylate copolymer; the polymerization inhibitor is p-hydroxyanisole.
The weather-resistant UV-composite laser coating is a hundred-percent UV coating, has the advantages of a common UV coating, and has the following beneficial effects compared with the prior art:
1. the PET laser film can be kept from yellowing for a long time and the decorative effect of the laser film is not influenced due to the light stabilizer;
2. the weather-resistant UV-composite laser coating composition coating is easier to separate from a template, and is beneficial to manufacturing a composite film with strong stereoscopic impression of laser patterns; the coating has good film forming property and good aging resistance; the finished product rate of the coating is high, which is beneficial to improving the production efficiency;
3. the anti-counterfeiting and decorative effects of the laser film can be kept for a long time.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Examples 1 to 9
Examples 1 to 9 respectively provide weather-resistant UV-composite laser coating compositions, each composition having the raw material components and parts by weight shown in table 1;
the raw material components corresponding to the embodiments are respectively mixed according to the parts by weight, dispersed at medium speed for 2 hours, and filtered to obtain the corresponding weather-resistant UV-composite laser coating composition.
TABLE 1
Comparative example 1
The comparative example had substantially the same composition and content as example 1, except that: this comparative example uses a monofunctional methacrylate instead of a difunctional methacrylate. The preparation method is the same as that of example 1.
Comparative example 2
The comparative example had substantially the same composition and content as example 1, except that: this comparative example did not add a light stabilizer. The preparation method is the same as that of example 1.
Comparative example 3
The comparative example had substantially the same composition and content as example 5, except that: in the comparative example, the addition amounts of the light stabilizer are LQ-2922 parts and TINUVIN 4001 parts. The preparation method is the same as that of example 1.
Effect verification:
the application of the weather-resistant UV-composite laser coating composition of the above embodiments 1 to 9 specifically comprises the following steps:
(1) coating process
Uniformly coating the weather-resistant UV-composite laser coating composition on a pretreated base film by using a coating machine according to the requirements of coating machine viscosity, coating amount and coating effect, and ensuring the weather-resistant UV-composite laser coating composition to be uniformly coated by adjusting process parameters;
(2) die pressing process
The technological parameters such as temperature, pressure, speed and the like of the molding roller are well controlled, the energy of the UV curing light source is adjusted, and the speed and the effect of the UV molding process are ensured;
(3) aluminum plating process
Plating a uniform aluminum layer on the weather-resistant UV-composite laser coating composition mould pressing coating by using an aluminum plating machine to form a holographic surface effect with a metal effect;
(4) composite process
And (3) carrying out wet-type compounding on the holographic aluminum-plated film and the base paper by coating an adhesive through a rubber roll or an anilox roll, laminating by using a press roll, and drying.
Performance detection
To compare the present invention with the prior art coatings, the coating compositions of examples 1-9 were applied by the following methods and the coatings were tested for flatness, adhesion, aluminum fastness, look, and temperature resistance.
First, flatness
The coating was applied to the pretreated PET film by knife coating and the smoothness of the coating was visually observed.
The test method comprises the following steps: the appearance of the test swatches was visually observed.
The evaluation method comprises the following steps: the surface of the sample sheet is smooth and flat, and the uneven and wrinkled surface is poor.
Second, adhesive force
The coating was applied to the pretreated PET film by knife coating and, when cured, the pattern of the embossing plate was pressed onto the coating. And testing the adhesive force of the sample sheet by using an adhesive tape method.
The evaluation method comprises the following steps: it is excellent in that no exfoliation occurs at all, good in that a small amount of exfoliation occurs, and poor in that a large amount of exfoliation occurs.
Fastness to aluminizing
Coating the paint on the pretreated PET film by a blade coating method, pressing the pattern of a mould pressing plate on the coating during curing, and plating an aluminum layer on the coating by an evaporation method. And testing the adhesive force of the sample sheet by using an adhesive tape method.
The evaluation method comprises the following steps: the aluminum plating layer had excellent results of no peeling, good results of a small amount of peeling, and poor results of a large amount of peeling.
Fourthly, yellowing resistance
Yellowing resistance test Each cycle comprised 4 hours of UV light (UV-A,340nm, 0.71W/m2/nm, 60 ℃) and 4 hours of condensation 50 ℃ for a total test time of 96 hours.
The evaluation method comprises the following steps: it is preferred that the surface is not foamed or raised and the Delta E value of the color difference change is less than 4.5, it is good that the surface is not foamed or raised and the Delta E value of the color difference change is greater than 4.5, and it is poor that the surface is foamed or raised and the Delta E value of the color difference change is greater than 4.5.
The better the yellowing resistance, the longer the anti-counterfeiting and decorative effects of the laser film can be kept.
The results of the performance measurements are shown in table 2:
TABLE 2 Performance test cases
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (7)
1. The weather-resistant UV-composite laser coating composition is characterized by comprising the following components in parts by weight:
the light stabilizer is a compound of a hindered amine light stabilizer and TINUVIN400 in a weight ratio of (1-2) to (2-3);
the photopolymerization monomer is a compound of bifunctional methacrylate, bifunctional acrylate and multifunctional methacrylate in a weight ratio of 1 (2-4) to (2-3).
2. The weather-resistant UV-composite laser coating composition of claim 1, which comprises the following components in parts by weight:
3. the weather-resistant UV-composite laser coating composition according to claim 1 or 2, wherein the light-cured resin is one or more of epoxy acrylic resin and polyester acrylic resin.
4. The weather-resistant UV-composite laser coating composition as claimed in claim 1, wherein the difunctional methacrylate is one or more of tripropylene glycol dimethacrylate, ethoxylated bisphenol A dimethacrylate and ethylene glycol dimethacrylate; the difunctional acrylate is one or more of dipropylene glycol diacrylate, neopentyl glycol diacrylate and ethoxylated bisphenol A diacrylate; the multifunctional methacrylate is one or more of trimethylolpropane trimethacrylate and ethoxylated trimethylolpropane trimethacrylate.
5. The weather-resistant UV-composite laser coating composition according to claim 1 or 2, wherein the photoinitiator is one or more of 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, 2,4, 6-trimethylbenzoyl-diphenyl phosphine oxide, phenyl bis (2,4, 6-trimethylbenzoyl) phosphine oxide and benzoin anisole.
6. The weather-resistant UV-composite laser coating composition according to claim 1 or 2, wherein the other auxiliary agents are one or more of a leveling agent, a defoaming agent and a polymerization inhibitor.
7. The weather-resistant UV-composite laser coating composition as claimed in claim 6, wherein the leveling agent is vinyltrimethoxysilane or gamma- (2, 3-glycidoxy) propyltrimethoxysilane; the defoaming agent is acrylate copolymer; the polymerization inhibitor is p-hydroxyanisole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811125545.XA CN109354976B (en) | 2018-09-26 | 2018-09-26 | Weather-resistant UV (ultraviolet) -composite laser coating composition |
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| CN201811125545.XA CN109354976B (en) | 2018-09-26 | 2018-09-26 | Weather-resistant UV (ultraviolet) -composite laser coating composition |
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| CN109354976A CN109354976A (en) | 2019-02-19 |
| CN109354976B true CN109354976B (en) | 2020-12-22 |
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| CN115042540A (en) * | 2022-06-14 | 2022-09-13 | 虎彩印艺股份有限公司 | Three-dimensional laser process of environment-friendly laser paper |
| CN115160941A (en) * | 2022-07-22 | 2022-10-11 | 孝感市雅都新材料防伪包装有限公司 | Positioning laser transfer film and preparation process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540240A (en) * | 2013-09-27 | 2014-01-29 | 上海乘鹰新材料有限公司 | UV (Ultraviolet)-compound laser coating composition |
| CN104927632A (en) * | 2015-07-01 | 2015-09-23 | 卓达新材料科技集团有限公司 | Xanthochromia-resistant UV paint for external wall sheet material and preparation method of xanthochromia-resistant UV paint |
| CN105086809A (en) * | 2015-08-07 | 2015-11-25 | 东莞市新星有机硅科技有限公司 | Weather-proof UV coating and preparing method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103540240A (en) * | 2013-09-27 | 2014-01-29 | 上海乘鹰新材料有限公司 | UV (Ultraviolet)-compound laser coating composition |
| CN104927632A (en) * | 2015-07-01 | 2015-09-23 | 卓达新材料科技集团有限公司 | Xanthochromia-resistant UV paint for external wall sheet material and preparation method of xanthochromia-resistant UV paint |
| CN105086809A (en) * | 2015-08-07 | 2015-11-25 | 东莞市新星有机硅科技有限公司 | Weather-proof UV coating and preparing method thereof |
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