Aqueous uv-curing coating and process for its production

Abstract

The present application relates to the technical field of paint, disclose a kind of water-based UV curing coating and its production process.The water-based UV curing coating prepared by the present application includes the following weight parts of raw materials: epoxy acrylate resin 50-70 parts, aliphatic waterborne polyurethane acrylate 20-30 parts, silicone modifier 4-8 parts, photoinitiator 2-5 parts, nano-silica 5-10 parts, defoaming agent 0.2-0.5 parts, leveling agent 0.1-0.3 parts, ethylene glycol 3-5 parts, water 30-50 parts;Wherein, the introduction of silicone modifier not only improves the water resistance of coating after curing, but also improves the adhesion of coating to substrate.

Description

Technical Field

[0001] This invention relates to the field of coating technology, specifically to a water-based UV-curable coating and its production process. Background Technology

[0002] Coatings, as key materials for decorating, protecting, and achieving specific functions on material surfaces, are widely used in home furnishings, industry, electronics, and packaging. Traditional solvent-based coatings rely on organic solvents as dispersion media, causing environmental pollution and harming the health of construction workers and consumers. Water-based coatings, using water as the primary dispersion medium, significantly reduce VOC emissions and offer advantages such as safety, non-toxicity, non-flammability, and easy cleaning. UV-cured coatings boast rapid curing, high energy efficiency, excellent film performance, and near-zero VOC emissions. Based on the advantages of these two types of coatings, water-based UV-cured coatings were developed at the end of the 20th century. They successfully combine the environmental friendliness of water with the high efficiency and performance of UV curing, possessing not only the advantages of both but also wide processing adaptability and strong performance adjustability.

[0003] Despite its significant advantages, waterborne UV-curable coatings still face some inherent technical challenges in commercial applications, determined by their chemical nature, such as: (1) poor hydrolytic stability. This is because waterborne UV coatings contain a large number of hydrophilic groups. Under high temperature and high humidity conditions, water molecules will attack and break these ester bonds, leading to the destruction of the coating film and causing a series of failure phenomena such as whitening, loss of gloss, softening, and loss of adhesion, which seriously limits its long-term application in harsh environments; (2) limited adhesion. This is due to problems such as curing shrinkage stress and interfacial compatibility between the coating and the substrate, which lead to limited adhesion between the coating and the substrate. Therefore, in order to address the above-mentioned problems of waterborne UV-curable coatings, researchers need to develop a coating that has both good water resistance and excellent adhesion to meet market demands. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a water-based UV-curable coating and its manufacturing process.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A waterborne UV-curable coating comprises the following raw materials in parts by weight: 50-70 parts epoxy acrylate resin, 20-30 parts aliphatic waterborne polyurethane acrylate, 4-8 parts silicone modifier, 2-5 parts photoinitiator, 5-10 parts nano silica, 0.2-0.5 parts defoamer, 0.1-0.3 parts leveling agent, 3-5 parts ethylene glycol, and 30-50 parts water;

[0007] Furthermore, the photoinitiator is one of photoinitiator 1173 or photoinitiator 2959;

[0008] Furthermore, the defoamer is BYK-093 defoamer, and the leveling agent is BYK-333 leveling agent;

[0009] The organosilicon modifier is prepared by the following steps:

[0010] Step A1: Stir p-trifluoromethylbenzaldehyde in anhydrous methanol until homogeneous, then slowly add aminopropyl double-terminated polydimethylsiloxane methanol solution, and react at 60°C under nitrogen for 6 hours. After the reaction is complete, transfer to ice water and stir for 5 minutes, filter, and then place in 1.5wt% sodium borohydride solution. React under ice water bath and nitrogen for 10 hours. Filter, wash, and dry to obtain fluorinated organosilicon.

[0011] Furthermore, in step A1, the ratio of trifluoromethylbenzaldehyde, anhydrous methanol, aminopropyl double-terminated polydimethylsiloxane methanol solution, and sodium borohydride solution is 0.25-0.3 mol: 200 mL: 200 mL: 100 mL.

[0012] Further, the aminopropyl dual-terminated polydimethylsiloxane methanol solution mentioned in step A1 is prepared by mixing aminopropyl dual-terminated polydimethylsiloxane and anhydrous methanol at a volume ratio of 0.1 mol: 200 mL.

[0013] Step A2: Under a nitrogen atmosphere, 3-chloropropylamine hydrochloride, DMF and triethylamine are stirred evenly, then fluorinated organosilicon is added, and the mixture is heated to 90°C and refluxed for 3-4 hours. The mixture is then rotary evaporated, purified and dried to obtain amination-containing fluorinated organosilicon.

[0014] Furthermore, in step A2, the ratio of 3-chloropropylamine hydrochloride, DMF, triethylamine, and fluorinated organosilicon is 0.2-0.21 mol: 200 mL: 0.21-0.22 mol: 0.1 mol;

[0015] Step A3: Mix the amination-containing fluorinated organosilicon in DMF until homogeneous, and label this as solution 1; mix the 4-bromo-1,8-naphthalenedicarboxylic anhydride in DMF until homogeneous, and label this as solution 2; add solution 1 dropwise to solution 2, then add triethylamine and stir until homogeneous, and heat to 95°C and stir for 7 hours. After cooling, filter, wash, and dry to obtain naphthyl-fluorinated organosilicon.

[0016] Furthermore, in step A3, the ratio of the amounts of solution 1, solution 2, and triethylamine is 200 mL: 100 mL: 0.048-0.052 mol;

[0017] Further, in step A3, the ratio of amination of fluorinated organosilicon and DMF in solution 1 is 0.1 mol: 200 mL, and the ratio of 4-bromo-1,8-naphthalenedicarboxylic anhydride and DMF in solution 2 is 0.202-0.205 mol: 100 mL;

[0018] Step A4: Add naphthyl-fluorinated organosilicon, piperazine and triethylamine to ethylene glycol monomethyl ether, mix and stir evenly, heat to 125℃ and reflux for 3 hours, distill, wash and dry to obtain organosilicon modified precursor;

[0019] Furthermore, in step A4, the ratio of naphthyl-fluorinated organosilicon, piperazine, triethylamine, and ethylene glycol monomethyl ether is 0.1 mol: 0.2-0.205 mol: 0.21-0.22 mol: 100 mL;

[0020] Step A5: Add the organosilicon modification precursor to anhydrous methanol and stir for 30 min at room temperature under nitrogen. Then, while stirring, add allyl methacrylate dropwise, and then heat to 35-45℃ and stir for 4-6 h. After rotary evaporation and drying, the organosilicon modifier is obtained.

[0021] Furthermore, in step A5, the ratio of the organosilicon-modified precursor, anhydrous methanol, and allyl methacrylate is 0.1 mol: 200 mL: 0.25-0.3 mol.

[0022] A production process for a water-based UV-curable coating includes the following steps:

[0023] Weigh the raw materials according to the weight proportions, mix and stir the epoxy acrylate resin, aliphatic waterborne polyurethane acrylate, organosilicon modifier, nano silica, ethylene glycol and water evenly, then add photoinitiator, defoamer and leveling agent and mix and stir evenly to obtain waterborne UV curing coating.

[0024] The beneficial effects of this invention are:

[0025] The waterborne UV-curable coating prepared by this invention is composed of epoxy acrylate resin and aliphatic waterborne polyurethane acrylate as the main matrix, and contains organosilicon modifier, nano silica, ethylene glycol, photoinitiator, defoamer, leveling agent and water. After UV curing, the coating has excellent water resistance and adhesion.

[0026] The coating of this invention incorporates an organosilicon modifier, which contains multiple functional groups. Utilizing the synergistic effect between these groups, not only is the water resistance of the coating improved, but its adhesion to the substrate is also enhanced. Specifically, the -Si-O-Si- segments in the organosilicon modifier are inherently highly hydrophobic. When introduced into the coating system, these hydrophobic segments tend to migrate to the surface and interior of the coating during film formation, creating a dense hydrophobic layer. Meanwhile, -CF3, as one of the known groups with the lowest surface energy, possesses extremely strong hydrophobic (water-repellent) and oleophobic properties. It accumulates on the coating surface, forming a superhydrophobic surface similar to the "lotus effect." The combined effect of these two modifiers significantly reduces the penetration, diffusion, and adsorption of water molecules within the coating, making it difficult for water molecules to enter the coating interior. This effectively cuts off the "reactant supply" for the hydrolysis reaction, protecting the easily hydrolyzed functional groups in the coating from the source. In addition, the large naphthyl structure can provide steric protection for nearby, resin-inherently hydrolyzable bonds (such as ester bonds), preventing water molecules from approaching and attacking these sensitive bonds.

[0027] The organosilicon modifier also incorporates a piperazine structure. The tertiary nitrogen atom in the piperazine structure possesses a lone pair of electrons, acting as a hydrogen bond acceptor. For polar substrates containing numerous hydroxyl groups (-OH), such as metals and glass, the piperazine structure can form strong hydrogen bonds with the -OH groups on the substrate surface, further enhancing the coating's adhesion. Furthermore, the naphthyl group, as a large planar conjugated system, can also generate strong π-π stacking interactions with the benzene ring structures on the surface of some substrates (PC, ABS, PET, etc.), further improving the coating's adhesion. Finally, the introduction of allyl methacrylate introduces free double bonds into the organosilicon modifier. These double bonds ensure that the organosilicon modifier is not simply physically blended, but rather undergoes a copolymerization reaction with other components in the coating system through a UV curing process, forming a strong covalent network. Through chemical bonding, the modifier is firmly fixed within the entire cross-linked network, preventing its migration from the interface during long-term use, thus ensuring the durability of the adhesion. Detailed Implementation

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: The organosilicon modifier was prepared by the following steps:

[0030] Step A1: Stir 0.25 mol of p-trifluoromethylbenzaldehyde in 200 mL of anhydrous methanol until homogeneous, then slowly add 200 mL of aminopropyl dimethylsiloxane methanol solution and react at 60 °C under nitrogen for 6 h. After the reaction is complete, transfer to ice water and stir for 5 min, filter, and then place in 100 mL of 1.5 wt% sodium borohydride solution. React under ice water bath and nitrogen for 10 h, filter, wash, and dry to obtain fluorinated organosilicon. The aminopropyl dimethylsiloxane methanol solution is prepared by mixing aminopropyl dimethylsiloxane and anhydrous methanol at a ratio of 0.1 mol: 200 mL.

[0031] Step A2: Under a nitrogen atmosphere, 0.2 mol 3-chloropropylamine hydrochloride, 200 mL DMF and 0.21 mol triethylamine are stirred evenly, then 0.1 mol fluorinated organosilicon is added, and the mixture is heated to 90 °C and refluxed for 3 h. The mixture is then rotary evaporated, purified and dried to obtain amination-containing fluorinated organosilicon.

[0032] Step A3: Mix 0.1 mol of amination-containing fluorinated organosilicon in 200 mL of DMF and stir until homogeneous, denoted as solution 1; mix 0.202 mol of 4-bromo-1,8-naphthalenedicarboxylic anhydride in 100 mL of DMF and stir until homogeneous, denoted as solution 2; add 200 mL of solution 1 dropwise to 100 mL of solution 2, then add 0.048 mol of triethylamine and stir until homogeneous, and heat to 95 °C and stir for 7 h. After cooling, filter, wash, and dry to obtain naphthyl-fluorinated organosilicon.

[0033] Step A4: Add 0.1 mol naphthyl-fluorinated organosilicon, 0.2 mol piperazine and 0.21 mol triethylamine to 100 mL ethylene glycol monomethyl ether, mix and stir evenly, and heat to 125 °C and reflux for 3 h. Distill, wash and dry to obtain organosilicon modified precursor.

[0034] Step A5: Add 0.1 mol of organosilicon-modified precursor to 200 mL of anhydrous methanol and stir for 30 min at room temperature under nitrogen. Then, while stirring, add 0.25 mol of allyl methacrylate dropwise. Then, heat to 35 °C and stir for 4 h. After rotary evaporation and drying, the organosilicon modifier is obtained.

[0035] Example 2: The organosilicon modifier was prepared by the following steps:

[0036] Step A1: 0.28 mol of p-trifluoromethylbenzaldehyde was stirred evenly in 200 mL of anhydrous methanol, and then 200 mL of aminopropyl dimethylsiloxane methanol solution was slowly added. The reaction was carried out under nitrogen and 60 °C for 6 h. After the reaction was completed, the mixture was transferred to ice water and stirred for 5 min. After filtration, the mixture was placed in 100 mL of 1.5 wt% sodium borohydride solution and reacted under ice water bath and nitrogen conditions for 10 h. After filtration, washing, and drying, fluorinated organosilicon was obtained. The aminopropyl dimethylsiloxane methanol solution was prepared by mixing aminopropyl dimethylsiloxane and anhydrous methanol in a ratio of 0.1 mol: 200 mL.

[0037] Step A2: Under a nitrogen atmosphere, 0.205 mol 3-chloropropylamine hydrochloride, 200 mL DMF and 0.215 mol triethylamine are stirred evenly, then 0.1 mol fluorinated organosilicon is added, and the mixture is heated to 90 °C and refluxed for 3.5 h. The mixture is then rotary evaporated, purified and dried to obtain amination-containing fluorinated organosilicon.

[0038] Step A3: Mix 0.1 mol of amination-containing fluorinated organosilicon in 200 mL of DMF and stir until homogeneous, denoted as solution 1; mix 0.203 mol of 4-bromo-1,8-naphthalenedicarboxylic anhydride in 100 mL of DMF and stir until homogeneous, denoted as solution 2; add 200 mL of solution 1 dropwise to 100 mL of solution 2, then add 0.05 mol of triethylamine and stir until homogeneous, and heat to 95 °C and stir for 7 h. After cooling, filter, wash, and dry to obtain naphthyl-fluorinated organosilicon.

[0039] Step A4: Add 0.1 mol naphthyl-fluorinated organosilicon, 0.203 mol piperazine and 0.215 mol triethylamine to 100 mL ethylene glycol monomethyl ether, mix and stir evenly, and heat to 125 °C and reflux for 3 h. Distill, wash and dry to obtain organosilicon modified precursor.

[0040] Step A5: Add 0.1 mol of organosilicon-modified precursor to 200 mL of anhydrous methanol, stir for 30 min at room temperature under nitrogen, then add 0.27 mol of allyl methacrylate dropwise while stirring, then heat to 40 °C and stir for 5 h, then evaporate and dry to obtain organosilicon modifier.

[0041] Example 3: The organosilicon modifier was prepared by the following steps:

[0042] Step A1: Stir 0.3 mol of p-trifluoromethylbenzaldehyde in 200 mL of anhydrous methanol until homogeneous, then slowly add 200 mL of aminopropyl dimethylsiloxane methanol solution and react at 60 °C under nitrogen for 6 h. After the reaction is complete, transfer to ice water and stir for 5 min, filter, and then place in 100 mL of 1.5 wt% sodium borohydride solution. React under ice water bath and nitrogen for 10 h, filter, wash, and dry to obtain fluorinated organosilicon. The aminopropyl dimethylsiloxane methanol solution is prepared by mixing aminopropyl dimethylsiloxane and anhydrous methanol at a ratio of 0.1 mol: 200 mL.

[0043] Step A2: Under a nitrogen atmosphere, 0.21 mol 3-chloropropylamine hydrochloride, 200 mL DMF and 0.22 mol triethylamine are stirred evenly, then 0.1 mol fluorinated organosilicon is added, and the mixture is heated to 90 °C and refluxed for 4 h. The mixture is then rotary evaporated, purified and dried to obtain amination-containing fluorinated organosilicon.

[0044] Step A3: Mix 0.1 mol of amination-containing fluorinated organosilicon in 200 mL of DMF and stir until homogeneous, and record this as solution 1; mix 0.205 mol of 4-bromo-1,8-naphthalenedicarboxylic anhydride in 100 mL of DMF and stir until homogeneous, and record this as solution 2; add 200 mL of solution 1 dropwise to 100 mL of solution 2, then add 0.052 mol of triethylamine and stir until homogeneous, and heat to 95 °C and stir for 7 h. After cooling, filter, wash, and dry to obtain naphthyl-fluorinated organosilicon;

[0045] Step A4: Add 0.1 mol naphthyl-fluorinated organosilicon, 0.205 mol piperazine and 0.22 mol triethylamine to 100 mL ethylene glycol monomethyl ether, mix and stir evenly, and heat to 125 °C and reflux for 3 h. Distill, wash and dry to obtain organosilicon modified precursor.

[0046] Step A5: Add 0.1 mol of organosilicon-modified precursor to 200 mL of anhydrous methanol, stir for 30 min at room temperature under nitrogen, then add 0.3 mol of allyl methacrylate dropwise while stirring, then heat to 45 °C and stir for 6 h, rotary evaporate and dry to obtain organosilicon modifier.

[0047] Example 4: A production process for a water-based UV-curable coating includes the following steps:

[0048] 50 parts epoxy acrylate resin, 20 parts aliphatic waterborne polyurethane acrylate, 4 parts organosilicon modifier prepared in Example 1, 2 parts photoinitiator 1173, 5 parts nano silica, 0.2 parts BYK-093 defoamer, 0.1 parts BYK-333 leveling agent, 3 parts ethylene glycol, and 30 parts water.

[0049] Weigh the raw materials according to the weight parts, mix and stir the epoxy acrylate resin, aliphatic waterborne polyurethane acrylate, the organosilicon modifier prepared in Example 1, nano silica, ethylene glycol and water evenly, then add photoinitiator 1173, BYK-093 defoamer and BYK-333 leveling agent and mix and stir evenly to obtain waterborne UV curing coating.

[0050] Example 5: A production process for a water-based UV-curable coating includes the following steps:

[0051] 60 parts epoxy acrylate resin, 25 parts aliphatic waterborne polyurethane acrylate, 6 parts organosilicon modifier prepared in Example 2, 3.5 parts photoinitiator 2959, 7 parts nano silica, 0.4 parts BYK-093 defoamer, 0.2 parts BYK-333 leveling agent, 4 parts ethylene glycol, and 40 parts water.

[0052] Weigh the raw materials according to the weight parts, mix and stir the epoxy acrylate resin, aliphatic waterborne polyurethane acrylate, the organosilicon modifier prepared in Example 2, nano silica, ethylene glycol and water evenly, then add photoinitiator 2959, BYK-093 defoamer and BYK-333 leveling agent and mix and stir evenly to obtain waterborne UV curing coating.

[0053] Example 6: A production process for a water-based UV-curable coating includes the following steps:

[0054] 70 parts epoxy acrylate resin, 30 parts aliphatic waterborne polyurethane acrylate, 8 parts organosilicon modifier prepared in Example 3, 5 parts photoinitiator 2959, 10 parts nano silica, 0.5 parts BYK-093 defoamer, 0.3 parts BYK-333 leveling agent, 5 parts ethylene glycol, and 50 parts water.

[0055] Weigh the raw materials according to the weight parts, mix and stir the epoxy acrylate resin, aliphatic waterborne polyurethane acrylate, the organosilicon modifier prepared in Example 3, nano silica, ethylene glycol and water evenly, then add photoinitiator 2959, BYK-093 defoamer and BYK-333 leveling agent and mix and stir evenly to obtain waterborne UV curing coating.

[0056] Comparative Example 1: This comparative example is a water-based UV-curable coating. The difference between this example and Example 6 is that polydimethylsiloxane is used instead of the organosilicon modifier prepared in Example 3. All other aspects are the same.

[0057] Comparative Example 2: This comparative example is a water-based UV-curable coating. The difference between this example and Example 6 is that vinyltriethoxysilane is used instead of the organosilicon modifier prepared in Example 3. All other aspects are the same.

[0058] The water-based UV-curable coatings prepared in Examples 4-6 and Comparative Examples 1-2 were coated onto the surfaces of tinplate and PET film, respectively, with a coating thickness of 30 μm. The coatings were then dried at 80°C for 5 hours and cured under a 600W UV lamp for 360 seconds to form a film for performance testing.

[0059] Water resistance test: Immerse the coating film on the tinplate surface in water at 25°C and observe the time when the paint film begins to bubble.

[0060] Water resistance test: The coating film applied to the tinplate surface is placed in water at 100℃ and the time when the paint film begins to bubble is observed.

[0061] Adhesion performance test: The coatings applied to the surfaces of tinplate and PET film respectively were tested according to GB / T 9286-1998 "Cross-cut test of paint and varnish film".

[0062] The test results are shown in Table 1:

[0063] Table 1: Performance Test Results

[0064]

[0065] As can be seen from Table 1, the water-based UV-curable coating prepared by this invention not only has excellent water resistance but also excellent adhesion, and can be widely used in plastic substrates, metal products and other products.

[0066] The above content is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the scope defined by the inventive concept, they should all fall within the protection scope of the present invention.

Claims

1. A water-based UV-curable coating, characterized in that, The raw materials include the following parts by weight: 50-70 parts epoxy acrylate resin, 20-30 parts aliphatic waterborne polyurethane acrylate, 4-8 parts organosilicon modifier, 2-5 parts photoinitiator, 5-10 parts nano silica, 0.2-0.5 parts defoamer, 0.1-0.3 parts leveling agent, 3-5 parts ethylene glycol, and 30-50 parts water; The organosilicon modifier is prepared by reacting an organosilicon modifier precursor and allyl methacrylate at 35-45°C with stirring for 4-6 hours. The organosilicon modifier precursor is prepared by reacting naphthyl-fluorinated organosilicon and piperazine at 125°C with refluxing for 3 hours. The naphthyl-fluorinated organosilicon is prepared by reacting amination-containing fluorinated organosilicon and 4-bromo-1,8-naphthalenedicarboxylic anhydride at 95°C with stirring for 7 hours. The amination-containing fluorinated organosilicon is prepared by reacting fluorinated organosilicon and 3-chloropropylamine hydrochloride at 90°C with refluxing for 3-4 hours. The fluorinated organosilicon is prepared by reacting p-trifluoromethylbenzaldehyde and aminopropyl dimethylsiloxane at nitrogen and 60°C for 6 hours, followed by reduction reaction with 1.5wt% sodium borohydride solution. The photoinitiator is one of photoinitiator 1173 or photoinitiator 2959; The defoamer is BYK-093, and the leveling agent is BYK-333.

2. The water-based UV-curable coating according to claim 1, characterized in that, The organosilicon modifier is prepared by the following steps: Step A1: Stir p-trifluoromethylbenzaldehyde in anhydrous methanol until homogeneous, then slowly add aminopropyl double-terminated polydimethylsiloxane methanol solution, and react at 60°C under nitrogen for 6 hours. After the reaction is complete, transfer to ice water and stir for 5 minutes, filter, and then place in 1.5wt% sodium borohydride solution. React under ice water bath and nitrogen for 10 hours. Filter, wash, and dry to obtain fluorinated organosilicon. Step A2: Under a nitrogen atmosphere, 3-chloropropylamine hydrochloride, DMF and triethylamine are stirred evenly, then fluorinated organosilicon is added, and the mixture is heated to 90°C and refluxed for 3-4 hours. The mixture is then rotary evaporated, purified and dried to obtain amination-containing fluorinated organosilicon. Step A3: Mix the amination-containing fluorinated organosilicon in DMF until homogeneous, and label this as solution 1; mix the 4-bromo-1,8-naphthalenedicarboxylic anhydride in DMF until homogeneous, and label this as solution 2; add solution 1 dropwise to solution 2, then add triethylamine and stir until homogeneous, and heat to 95°C and stir for 7 hours. After cooling, filter, wash, and dry to obtain naphthyl-fluorinated organosilicon. Step A4: Add naphthyl-fluorinated organosilicon, piperazine and triethylamine to ethylene glycol monomethyl ether, mix and stir evenly, heat to 125℃ and reflux for 3 hours, distill, wash and dry to obtain organosilicon modified precursor; Step A5: Add the organosilicon modification precursor to anhydrous methanol and stir for 30 minutes at room temperature under nitrogen. Then, while stirring, add allyl methacrylate dropwise, and then heat to 35-45℃ and stir for 4-6 hours. After rotary evaporation and drying, the organosilicon modifier is obtained.

3. The water-based UV-curable coating according to claim 2, characterized in that, In step A1, the ratio of trifluoromethylbenzaldehyde, anhydrous methanol, aminopropyl double-terminated polydimethylsiloxane methanol solution, and sodium borohydride solution is 0.25-0.3 mol: 200 mL: 200 mL: 100 mL.

4. The water-based UV-curable coating according to claim 3, characterized in that, The aminopropyl dual-terminated polydimethylsiloxane methanol solution mentioned in step A1 is prepared by mixing aminopropyl dual-terminated polydimethylsiloxane and anhydrous methanol at a ratio of 0.1 mol: 200 mL.

5. The water-based UV-curable coating according to claim 2, characterized in that, In step A2, the ratio of 3-chloropropylamine hydrochloride, DMF, triethylamine, and fluorinated organosilicon is 0.2-0.21 mol: 200 mL: 0.21-0.22 mol: 0.1 mol.

6. The water-based UV-curable coating according to claim 2, characterized in that, In step A3, the ratio of the amounts of solution 1, solution 2, and triethylamine is 200 mL: 100 mL: 0.048-0.052 mol.

7. The water-based UV-curable coating according to claim 6, characterized in that, In step A3, the ratio of amination of fluorinated organosilicon and DMF in solution 1 is 0.1 mol: 200 mL, and the ratio of 4-bromo-1,8-naphthalenedicarboxylic anhydride and DMF in solution 2 is 0.202-0.205 mol: 100 mL.

8. The water-based UV-curable coating according to claim 2, characterized in that, In step A4, the ratio of naphthyl-fluorinated organosilicon, piperazine, triethylamine, and ethylene glycol monomethyl ether is 0.1 mol: 0.2-0.205 mol: 0.21-0.22 mol: 100 mL.

9. The water-based UV-curable coating according to claim 2, characterized in that, In step A5, the ratio of organosilicon-modified precursor, anhydrous methanol, and allyl methacrylate is 0.1 mol: 200 mL: 0.25-0.3 mol.

10. A production process for the waterborne UV-curable coating according to any one of claims 1-9, characterized in that, Includes the following steps: Weigh the raw materials according to the weight proportions, mix and stir the epoxy acrylate resin, aliphatic waterborne polyurethane acrylate, organosilicon modifier, nano silica, ethylene glycol and water evenly, then add photoinitiator, defoamer and leveling agent and mix and stir evenly to obtain waterborne UV curing coating.

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