CN102964981A - A kind of water-based UV printing iron varnish and preparation method thereof - Google Patents

Abstract

The invention relates to the technical field of gloss oil, in particular to water-based UV iron printing gloss oil and a preparation method thereof, wherein the water-based UV iron printing gloss oil comprises the following raw materials in parts by weight: 30-40 parts of water-based UV light-cured resin, 8-18 parts of UV cured acrylic emulsion, 12-18 parts of polyethylene glycol diacrylate, 8-15 parts of ethoxylated trimethylolpropane triacrylate, 0.5-1 part of an organic silicon defoaming agent, 1-5 parts of an organic silicon flatting agent, 5-15 parts of an alcohol auxiliary agent, 4-8 parts of a photoinitiator, 2-6 parts of an adhesion promoter and 4-10 parts of water. The invention can optimize the performance of the gloss oil by only adopting two water-based UV monomers, simplifies the types of the UV monomers, reduces the using amount of the UV monomers, has lower residual odor after polishing, and has less pollution and safety for ink producers and users because the two water-based UV monomers are low-irritation UV monomers.

Description

A kind of water-based UV printing iron varnish and preparation method thereof

technical field

The invention relates to the technical field of varnish, in particular to a water-based UV varnish for iron printing and a preparation method thereof.

Background technique

Ultraviolet radiation curing technology is a brand-new green technology developed since the 1970s in the world. The ultraviolet curing coating produced by this technology is called UV coating for short. UV coating does not contain VOC, has little environmental pollution and fast curing speed. It has the advantages of saving energy, good performance of cured products, and suitable for high-speed automatic production. Due to its unique technology and application advantages, UV coatings are rapidly and widely applied to various industries and fields such as electronic products, machinery manufacturing, and metal anticorrosion. In recent years, with the increasing calls for environmental protection around the world, the water-based research of UV coatings has also made great progress. It gives full play to the comprehensive performance of the two technologies of UV curing and water-based dilution, and is more effective than traditional solvent-based UV coatings. It has advantages in construction, economy, safety and application.

The Chinese invention patent with the application number of 201010530069.7 discloses a high-gloss and wear-resistant mobile phone UV varnish, which uses low-viscosity polyester acrylate and aliphatic polyurethane acrylate as the main resin, and is equipped with a reactive diluent ethoxylated pentaerythritol tetra Acrylates, trimethylolpropane triacrylate, tripropylene glycol diacrylate, 1,6-hexanediol diacrylate and isooctyl acrylate, thinner alcohol and ethyl acetate, photoinitiator diphenylmethyl Ketone and 1-hydroxycyclohexyl phenyl ketone, reactive amine co-initiator, defoamer, leveling agent and slip agent, etc. are stirred and mixed uniformly. In order to improve the performance of varnish, four kinds of UV monomers are added to this UV varnish. However, if too many UV monomers are added, the residual odor will be large. The strong irritating smell is very harmful to the operators and causes certain pollution to the air, which does not meet the requirements of environmental protection.

Contents of the invention

The object of the present invention is to aim at the deficiencies in the prior art, and provide a kind of water-based UV iron printing varnish with low residual odor and little pollution and its preparation method.

The present invention is achieved through the following technical solutions.

A water-based UV varnish for iron printing is composed of the following raw materials in parts by weight:

Water-based UV photocurable resin 30~40 parts

UV curable acrylic emulsion 8~18 parts

Polyethylene glycol diacrylate 12~18 parts

Ethoxylated trimethylolpropane triacrylate 8~15 parts

Silicone defoamer 0.5~1 parts

Silicone leveling agent 1~5 parts

Alcohol additives 5~15 parts

Photoinitiator 4~8 parts

Adhesion promoter 2~6 parts

4~10 parts of water.

Preferably, a water-based UV iron printing varnish is made up of the following raw materials in parts by weight:

Water-based UV photocurable resin 30~35 parts

UV curable acrylic emulsion 10~16 parts

Polyethylene glycol diacrylate 13~17 parts

Ethoxylated trimethylolpropane triacrylate 10~13 parts

Silicone defoamer 0.5~0.8 parts

Silicone leveling agent 2~4 parts

Alcohol additives 8~12 parts

Photoinitiator 5~7 parts

Adhesion promoter 3~5 parts

5~8 parts of water.

More preferably, a water-based UV iron printing varnish is made up of the following raw materials in parts by weight:

Water-based UV photocurable resin 35~40 parts

UV curable acrylic emulsion 13~15 parts

Polyethylene glycol diacrylate 15~16 parts

Ethoxylated trimethylolpropane triacrylate 11~12 parts

Silicone defoamer 0.5~0.6 parts

Silicone leveling agent 2~3 parts

Alcohol additives 10~11 parts

Photoinitiator 5~6 parts

Adhesion promoter 3~4 parts

6~7 parts of water.

Among them, the water-based UV photocurable resin is aliphatic urethane acrylate, and the aliphatic urethane acrylate is Sartomer's CN9245, which has a transparent appearance, a solid content of 100%, a viscosity (cps.25°C) of 20,000, and a functionality of 3 , The glass transition temperature is 26°C. CN9245 is a water-dilutable aliphatic urethane acrylate, which is easy to clean equipment and containers, and has fast curing, high hardness, excellent wear resistance and adhesion.

Among them, the UV-curable acrylic emulsion is CRAUMUL 2718 from Craig Willy, with a solid content of 45%, a viscosity (mPa.s) <1000, a pH of 7.5-8.5, a minimum film-forming temperature of <0°C, and a particle size of 80nm. , has excellent chemical resistance, excellent hardness and sandability.

Among them, the polyethylene glycol diacrylate is polyethylene glycol (400) diacrylate, which is Sartomer's SR344, with a transparent appearance, a solid content of 100%, a viscosity (cps.25°C) of 57, and a functionality of is 2, and the glass transition temperature is 3°C. SR344 is a low-functionality monomer with a low glass transition temperature, which can greatly reduce the crosslinking density of the cured film and improve the flexibility of the ink layer. It is also a water-soluble UV monomer with low skin irritation, safety and environmental protection, and fast curing.

Among them, the ethoxylated trimethylolpropane triacrylate is (20) ethoxylated trimethylolpropane triacrylate, which is Sartomer's SR415, with a transparent appearance, a solid content of 100%, and a viscosity (cps.25 ℃) 225, the functionality is 3, and the glass transition temperature is 38℃. SR415 is a water-soluble UV monomer, which is a modified product of trimethylolpropane triacrylate (TMPTA). The flexibility of the film enhances adhesion, reduces irritation to the skin, and is safe and environmentally friendly.

Wherein, the organosilicon defoaming agent is a modified polysiloxane interpolymer solution, and the modified polysiloxane interpolymer solution is BYK-020 from German BYK Chemicals, which prevents foam generation during the production and application of varnish.

Wherein, the silicone leveling agent is BYK-333 of BYK. The appearance of BYK-333 is a clear and slightly turbid liquid with a content of 99% and a density of 1.04kg/m ³ . BYK-333 has good compatibility and can improve anti-sticking properties in water-based systems and prevent floating and color separation in most solvent systems. In addition, it can also improve the smoothness of the surface of the ink layer, improve the wetting effect of the substrate, and increase the gloss of the ink layer.

Among them, the alcohol additive is absolute ethanol, a colorless and transparent liquid, with a content (CH ₃ CH ₂ OH)/% ≥ 99.8, a density (200C)/(g/mL) of 0.789-0.791, good luminosity, and strong adhesion High temperature, heat-resistant, sun-resistant and moisture-resistant.

Wherein, the adhesion promoter is an organic fluorine-modified acrylate polymer, and the organic fluorine-modified acrylate polymer is leveling3555 of Sloco, which is light yellow and clear transparent liquid with an effective content of 100%, a specific gravity of 0.97, and a viscosity of (25°C/cps) is 25. leveling3555 can greatly reduce the surface tension of the system, increase the wettability and adhesion of the substrate, have the advantages of rapid leveling and prevent shrinkage cavities, do not improve the surface smoothness, do not affect the coating performance, and have a good effect on recoating and coating There is no effect on adhesion.

Wherein, the photoinitiator is 2-methyl-1-[4-(methylthio)phenyl]-2-(4-morpholinyl)-1-acetone, 2-methyl-1-[ 4-(Methylthio)phenyl]-2-(4-morpholinyl)-1-propanone is IRGACURE 907 from Beijing Yingli. The molecular weight of IRGACURE 907 is 251.3446, the density is 1.19g/cm ³ , the melting point is 74-76°C, the boiling point is 410.5°C, and the flash point is 202.1°C. IRGACURE 907 is a highly efficient UV photoinitiator. Its unique High absorption characteristics make it especially suitable for UV-curable coatings, which can keep UV-curable coatings from yellowing for a long time and prolong storage time.

Wherein, a kind of preparation method of water-based UV printing iron varnish comprises the following method steps:

a. Add water-based UV light-curable resin, UV-curable acrylic emulsion, polyethylene glycol diacrylate, and ethoxylated trimethylolpropane triacrylate into the batching tank by weight and stir evenly. The stirring time is 25~35min;

b. Add the photoinitiator to the material mixed in step a by weight in the state of stirring at a low speed, and continue stirring and mixing for 25-35 minutes;

c. Stir the silicone defoamer, silicone leveling agent, alcohol additives, adhesion promoter, water and the material mixed in step b in the above parts by weight, and the stirring time is 25 to 35 minutes to obtain Water-based UV printing iron varnish.

Detect various technical indicators of the prepared water-based UV iron printing varnish. The inspection method of the prepared water-based UV iron printing varnish is: use a digital viscometer to measure the viscosity, use a YQM-1B ink viscosity meter to measure the viscosity, and use a pH test The pH value is measured by a dyne pen, the surface tension is measured by a dyne pen, the gloss is measured by a 65° standard gloss tester, and the adhesion is measured by the 100-gauge method (3m adhesive tape).

The beneficial effects of the present invention are: the ethoxylated trimethylolpropane triacrylate of the present invention is a modified product of trimethylolpropane triacrylate (TMPTA), which not only has the same performance and wide application of TMPTA, but also It has the advantages of low viscosity and high curing speed, so the present invention only needs to use polyethylene glycol diacrylate and ethoxylated trimethylolpropane triacrylate two water-based UV monomers to optimize the performance of varnish, simplifying the The type of UV monomer, the amount of UV monomer used is reduced, and the residual odor after glazing is lower, and the above two water-based UV monomers are low-irritant UV monomers, which are less polluting to ink producers and users ,safer.

The preparation method of the invention is simple, has strong operability, is easy to realize, has low production cost, and is favorable for popularization and application.

Detailed ways

The present invention will be further described below in conjunction with embodiment.

Example 1.

A water-based UV varnish for iron printing, consisting of the following raw materials in parts by weight: 35 parts of aliphatic polyurethane acrylate, 13 parts of UV curable acrylic emulsion, 15.5 parts of polyethylene glycol (400) diacrylate, 11 parts of (20) ethyl Oxidized trimethylolpropane triacrylate, 0.5 parts of modified polysiloxane copolymer solution, 2 parts of silicone leveling agent, 10 parts of absolute ethanol, 5 parts of 2-methyl-1-[4-(methyl thio)phenyl]-2-(4-morpholino)-1-propanone, 3 parts of organic fluorine-modified acrylate polymer, 5 parts of water.

A kind of preparation method of water-based UV printing iron varnish of the present embodiment comprises the following method steps: a, aliphatic urethane acrylate, UV curing acrylic emulsion, polyethylene glycol (400) diacrylate, (20) ethoxylated Add trimethylolpropane triacrylate into the batching tank by weight and stir evenly, and the stirring time is 30min; b. Add 2-methyl-1- [4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone, continue stirring and mixing, the stirring time is 30min; c, the modified polysiloxane of the above weight parts The copolymer solution, silicone leveling agent, absolute ethanol, organic fluorine-modified acrylate polymer, water and the materials mixed in step b were stirred evenly for 30 minutes to prepare water-based UV iron printing varnish.

Detect various technical indicators of the prepared water-based UV iron printing varnish, and various performance test indicators are shown in Table 1. the

Example 2.

A water-based UV varnish for iron printing, consisting of the following raw materials in parts by weight: 32 parts of aliphatic polyurethane acrylate, 15 parts of UV curable acrylic emulsion, 18 parts of polyethylene glycol (400) diacrylate, 8 parts of (20) ethyl Oxidized trimethylolpropane triacrylate, 0.6 parts of modified polysiloxane copolymer solution, 3 parts of silicone leveling agent, 8 parts of absolute ethanol, 5 parts of 2-methyl-1-[4-(methyl thio)phenyl]-2-(4-morpholino)-1-propanone, 2 parts of organic fluorine-modified acrylate polymer, 6 parts of water.

A kind of preparation method of water-based UV printing iron varnish of the present embodiment comprises the following method steps: a, aliphatic urethane acrylate, UV curing acrylic emulsion, polyethylene glycol (400) diacrylate, (20) ethoxylated Add trimethylolpropane triacrylate into the batching tank by weight and stir evenly, and the stirring time is 30min; b. Add 2-methyl-1- [4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone, continue stirring and mixing, the stirring time is 35min; c, the modified polysiloxane of the above weight parts The copolymer solution, silicone leveling agent, absolute ethanol, organic fluorine-modified acrylate polymer, water and the materials mixed in step b were stirred evenly for 32 minutes to prepare water-based UV iron printing varnish.

Detect various technical indicators of the prepared water-based UV iron printing varnish, and various performance test indicators are shown in Table 1. the

Example 3.

A water-based UV varnish for iron printing, consisting of the following raw materials in parts by weight: 36 parts of aliphatic polyurethane acrylate, 12 parts of UV curable acrylic emulsion, 16 parts of polyethylene glycol (400) diacrylate, 10 parts of (20) ethyl Oxidized trimethylolpropane triacrylate, 0.7 parts of modified polysiloxane copolymer solution, 4 parts of silicone leveling agent, 12 parts of absolute ethanol, 6 parts of 2-methyl-1-[4-(methyl thio)phenyl]-2-(4-morpholinyl)-1-propanone, 3 parts of organic fluorine-modified acrylate polymer, 7 parts of water.

A kind of preparation method of water-based UV printing iron varnish of the present embodiment comprises the following method steps: a, aliphatic urethane acrylate, UV curing acrylic emulsion, polyethylene glycol (400) diacrylate, (20) ethoxylated Add trimethylolpropane triacrylate into the batching tank by weight and stir evenly, and the stirring time is 30min; b. Add 2-methyl-1- [4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone, continue stirring and mixing, the stirring time is 35min; c, the modified polysiloxane of the above weight parts The copolymer solution, silicone leveling agent, absolute ethanol, organic fluorine-modified acrylate polymer, water and the materials mixed in step b were stirred evenly for 32 minutes to prepare water-based UV iron printing varnish.

Detect various technical indicators of the prepared water-based UV iron printing varnish, and various performance test indicators are shown in Table 1. the

Example 4.

A water-based UV varnish for iron printing, consisting of the following raw materials in parts by weight: 30 parts of aliphatic polyurethane acrylate, 8 parts of UV curable acrylic emulsion, 12 parts of polyethylene glycol (400) diacrylate, 8 parts of (20) ethyl Oxidized trimethylolpropane triacrylate, 0.5 parts of modified polysiloxane copolymer solution, 1 part of silicone leveling agent, 5 parts of absolute ethanol, 4 parts of 2-methyl-1-[4-(methyl thio)phenyl]-2-(4-morpholinyl)-1-propanone, 2 parts of organic fluorine-modified acrylate polymer, 4 parts of water.

A kind of preparation method of water-based UV printing iron varnish of the present embodiment comprises the following method steps: a, aliphatic urethane acrylate, UV curing acrylic emulsion, polyethylene glycol (400) diacrylate, (20) ethoxylated Add trimethylolpropane triacrylate into the batching tank by weight and stir evenly, and the stirring time is 28min; b. Add 2-methyl-1- [4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone, continue stirring and mixing, the stirring time is 26min; c, the modified polysiloxane of the above weight parts The copolymer solution, silicone leveling agent, absolute ethanol, organic fluorine-modified acrylate polymer, water and the materials mixed in step b were stirred evenly for 32 minutes to prepare water-based UV iron printing varnish.

Detect various technical indicators of the prepared water-based UV iron printing varnish, and various performance test indicators are shown in Table 1. the

Example 5.

A water-based UV varnish for iron printing, consisting of the following raw materials in parts by weight: 40 parts of aliphatic polyurethane acrylate, 18 parts of UV curable acrylic emulsion, 18 parts of polyethylene glycol (400) diacrylate, 15 parts of (20) ethyl Oxidized trimethylolpropane triacrylate, 1 part of modified polysiloxane copolymer solution, 5 parts of silicone leveling agent, 15 parts of absolute ethanol, 8 parts of 2-methyl-1-[4-(methyl thio)phenyl]-2-(4-morpholinyl)-1-propanone, 6 parts of organic fluorine-modified acrylate polymer, 10 parts of water.

A kind of preparation method of water-based UV printing iron varnish of the present embodiment comprises the following method steps: a, aliphatic urethane acrylate, UV curing acrylic emulsion, polyethylene glycol (400) diacrylate, (20) ethoxylated Add trimethylolpropane triacrylate into the batching tank by weight and stir evenly, and the stirring time is 35min; b. Add 2-methyl-1- [4-(methylthio)phenyl]-2-(4-morpholinyl)-1-propanone, continue stirring and mixing, the stirring time is 25min; c, the modified polysiloxane of the above weight parts The copolymer solution, silicone leveling agent, absolute ethanol, organic fluorine-modified acrylate polymer, water and the materials mixed in step b were stirred evenly for 30 minutes to prepare water-based UV iron printing varnish.

Detect various technical indicators of the prepared water-based UV iron printing varnish, and various performance test indicators are shown in Table 1. the

The performance test indicators of the water-based UV iron printing varnish made in Examples 1 to 5 are shown in Table 1. the

Table 1

。

.

It can be seen from the various performance test indexes of Examples 1 to 5 that the water-based UV iron printing varnish prepared by the present invention has good gloss, adhesion, and excellent and stable mechanical stability.

The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so all equivalent changes or modifications made according to the structure, features and principles described in the patent scope of the present invention should be Including within the scope of the patent application of the present invention.

Claims (10)

1. water-based UV metal decorating gloss oil, it is characterized in that: the raw material by following weight part forms:

30 ~ 40 parts of water-based ultraviolet (UV) curable resins

8 ~ 18 parts of UV curing acrylic emulsions

12 ~ 18 parts of polyethyleneglycol diacrylates

8 ~ 15 parts of ethoxyquin Viscoat 295s

0.5 ~ 1 part of silicone antifoam agent

1 ~ 5 part of organosilicon flow agent

5 ~ 15 parts of alcohol analog assistants

4 ~ 8 parts of light triggers

2 ~ 6 parts of adhesion promoters

4 ~ 10 parts in water.

2. a kind of water-based UV metal decorating gloss oil according to claim 1, it is characterized in that: the raw material by following weight part forms:

30 ~ 35 parts of water-based ultraviolet (UV) curable resins

10 ~ 16 parts of UV curing acrylic emulsions

13 ~ 17 parts of polyethyleneglycol diacrylates

10 ~ 13 parts of ethoxyquin Viscoat 295s

0.5 ~ 0.8 part of silicone antifoam agent

2 ~ 4 parts of organosilicon flow agents

8 ~ 12 parts of alcohol analog assistants

5 ~ 7 parts of light triggers

3 ~ 5 parts of adhesion promoters

5 ~ 8 parts in water.

3. a kind of water-based UV metal decorating gloss oil according to claim 1, it is characterized in that: the raw material by following weight part forms:

35 ~ 40 parts of water-based ultraviolet (UV) curable resins

13 ~ 15 parts of UV curing acrylic emulsions

15 ~ 16 parts of polyethyleneglycol diacrylates

11 ~ 12 parts of ethoxyquin Viscoat 295s

0.5 ~ 0.6 part of silicone antifoam agent

2 ~ 3 parts of organosilicon flow agents

10 ~ 11 parts of alcohol analog assistants

5 ~ 6 parts of light triggers

3 ~ 4 parts of adhesion promoters

6 ~ 7 parts in water.

4. the described a kind of water-based UV metal decorating gloss oil of any one according to claim 1 ~ 3, it is characterized in that: described water-based ultraviolet (UV) curable resin is aliphatic urethane acrylate, aliphatic urethane acrylate is the CN9245 of Sartomer.

5. the described a kind of water-based UV metal decorating gloss oil of any one according to claim 1 ~ 3, it is characterized in that: described polyethyleneglycol diacrylate is the SR344 of Sartomer, described ethoxyquin Viscoat 295 is the SR415 of Sartomer.

6. the described a kind of water-based UV metal decorating gloss oil of any one according to claim 1 ~ 3, it is characterized in that: described adhesion promoter is the organic fluorine modified polyacrylate.

7. the described a kind of water-based UV metal decorating gloss oil of any one according to claim 1 ~ 3, it is characterized in that: described silicone antifoam agent is modified polyorganosiloxane interpolymer solution, and modified polyorganosiloxane interpolymer solution is the BYK-020 of German Bi Ke chemistry.

8. the described a kind of water-based UV metal decorating gloss oil of any one according to claim 1 ~ 3, it is characterized in that: described pure analog assistant is dehydrated alcohol.

9. the described a kind of water-based UV metal decorating gloss oil of any one according to claim 1 ~ 3, it is characterized in that: described light trigger is 2-methyl isophthalic acid-[4-(methyl sulfo-) phenyl]-2-(4-morpholinyl)-1-acetone, and the 2-methyl isophthalic acid-[4-(methyl sulfo-) phenyl]-2-(4-morpholinyl)-1-acetone is the IRGACURE 907 of Beijing English power.

10. the preparation method of the described a kind of water-based UV metal decorating gloss oil of any one among the claim 1-9 is characterized in that: comprise the following methods step:

A, water-based ultraviolet (UV) curable resin, UV curing acrylic emulsion, polyethyleneglycol diacrylate, ethoxyquin Viscoat 295 added in the pill tank by weight stir, churning time is 25 ~ 35min;

B, the material of mixing among the step a is added light trigger by weight under the state of stirring at low speed, continue stirring and evenly mixing, churning time is 25 ~ 35min;

The material stirring of mixing is even among c, the silicone antifoam agent with above-mentioned weight part, organosilicon flow agent, pure analog assistant, adhesion promoter, water and the step b, and churning time is 25 ~ 35min, makes water-based UV metal decorating gloss oil.