UV curing coating as well as preparation method and application thereof

Abstract

The invention provides a UV curing coating as well as a preparation method and application thereof, and relates to the technical field of UV curing paints.The preparation method comprises the steps that S1, ingredients are added, specifically, nano powder, a stabilizer and a solvent for preparing the UV curing coating are added into a container according to the weight percentage; s2, mixing and stirring: stirring for 10-20 minutes at the rotating speed of 1000-2000r / min in the container, so that the nano powder, the stabilizer and the solvent which are added into the container are uniformly mixed; according to the invention, a proper amount of nano-powder and an anti-fingerprint auxiliary agent are added into a container, so that the use amount of high-functionality resin is reduced, and the coating cost is effectively reduced; the UV curing coating has the advantages that the UV curing coating can be sprayed on the surface of the material, the components can generate synergistic effects, accordingly, the wear resistance of the coating can be obviously improved, various physical properties and chemical properties of the surface of the material can be obviously improved, the UV curing coating sprayed on the surface of the material can form a layer of coating on the surface of the material after being subjected to UV light curing, and the coating has good pollution resistance and excellent pollution resistance.

Description

Technical Field

[0001] The invention relates to the technical field of ultraviolet curing coatings, in particular to a UV curing coating and a preparation method and application thereof. Background Art

[0002] Ultraviolet (UV) material is a material whose surface is protected by UV treatment. It is usually prepared by spraying UV curing coating on ordinary plastic products, solid wood products, calcium silicate boards and other boards, and then drying them with a UV light curing machine. After UV irradiation, the UV curing coating will quickly cure into a film on the surface of the plastic product and form a coating, and finally produce a UV board. The main components of UV curing coatings usually include oligomers, monomers and UV initiators. Among them, oligomers are substances with a relative molecular mass between small molecules and macromolecules, and are also the main film-forming substances of coatings. UV initiators can decompose and produce free radicals under UV irradiation, thereby initiating polymerization reactions of oligomers and monomers, causing the coating to cure into a film and form a coating on the surface of the material. The coating has excellent physical properties and chemical stability, and can protect the material and beautify the appearance of the board.

[0003] UV coatings have been widely used in modern society due to their advantages of simple process, convenient operation, fast construction speed, environmental protection and economy. They can effectively improve the hardness and wear resistance of plastic products by using them for surface hardening. However, the hardness and wear resistance of existing UV coatings can no longer meet the increasing market demand, especially in terms of steel wool friction resistance, which needs to be further improved.

[0004] At present, there are also relevant reference patent technologies on the preparation method of UV curing coatings and the application of UV curing coatings, such as patent number CN201911106643.3, which discloses a low-cost, high-wear-resistant UV curing coating and its preparation method and application, and discloses that the low-cost, high-wear-resistant UV curing coating includes the following components by weight percentage: 20-35% of 6-official polyurethane acrylate; 3-8% of 9-15-official polyurethane acrylate; 0.7-1% of nanopowder; 0.5-1% of anti-fingerprint additive; 0.3-1% of leveling agent; 0.2-2% of stabilizer; 0.5%-2% of photoinitiator; 50%-75% of solvent. The wear-resistant UV curing coating is applied by pouring, spraying or manually on the PMMA surface of the PMMA / PC composite substrate to enhance the abrasion resistance of the surface of the PMMA / PC sheet. The low-cost and highly wear-resistant UV-curable coating can form a tough coating layer on the surface of the PMMA / PC composite substrate after UV ultraviolet light curing. It has good adhesion to the PMMA / PC composite substrate, high surface hardness, good wear resistance, and low cost. It can effectively ensure that the product is not easily scratched during use, and has good hydrophobic and oleophobic and easy-to-clean properties.

[0005] Although the above patents disclose the relevant UV curing coating preparation method and the application of UV curing coating, the actual implementation of the application of UV curing coating still requires relevant hardware support, and the existing application of UV curing coating still has some shortcomings, the specific shortcomings are:

[0006] At present, the most commonly used antifouling agent is nanoparticles, which have the ability to adsorb pollutants and rely on their own high activity to decompose pollutants, and can achieve a very high level of antifouling. However, since most nanoparticles have poor dispersibility, it is difficult to evenly disperse them in the mixed system of the coating. At the same time, particle agglomeration is very likely to occur during the UV light curing process of the UV coating, thereby reducing the uniformity inside the coating, and thus making it impossible for the UV sheet to achieve the expected antifouling effect. In addition, the leveling effect of the UV curing coating during film formation will also be affected to a certain extent, resulting in poor coating flatness and greatly reduced wear resistance, which reduces the service life of the UV sheet to a certain extent. At the same time, it takes a long time for the UV curing coating to be sprayed on the surface of the material after it is produced, and the slow spraying speed further aggravates the deterioration of the coating flatness on the surface of the material. Therefore, it is necessary to provide a UV curing coating and its preparation method and application. Summary of the invention

[0007] In view of the problems in the prior art, the purpose of the present invention is to provide a UV curing coating and a preparation method and application thereof, so as to solve the problems described in the above background technology: the most commonly used antifouling agent is nanoparticles, which have the ability to adsorb pollutants and rely on their own high activity to decompose pollutants, and can achieve a very high antifouling level. However, since most nanoparticles have poor dispersibility, it is difficult to evenly disperse them in the mixed system of the coating. At the same time, particle agglomeration is also very likely to occur during the UV light curing process of the UV coating, thereby reducing the uniformity inside the coating, and thus making it impossible for the UV sheet to achieve the expected antifouling effect. In addition, the leveling effect of the UV curing coating during film formation will also be affected to a certain extent, so that the coating flatness deteriorates, and the wear resistance is greatly reduced, which reduces the service life of the UV sheet to a certain extent. At the same time, it takes a long time to spray the UV curing coating on the surface of the material after it is produced, and the slow spraying speed further deepens the technical problem of the deterioration of the coating flatness on the surface of the material.

[0008] The technical problem to be solved by the present invention is achieved by adopting the following technical solution: a method for preparing a UV curing coating, the method for preparing the UV curing coating mainly comprises the following steps:

[0009] S1. Add ingredients: Add nano powder, stabilizer and solvent for making UV curing coating into a container according to weight percentage;

[0010] S2. Mixing and stirring: Stir the container at a speed of 1000-2000 r / min for 10-20 min to mix the nano powder, stabilizer and solvent added to the container evenly;

[0011] S3, ultrasonic stirring: the nano powder, stabilizer and solvent uniformly mixed in step S2 are ultrasonically mixed for 10-30 minutes, and then the anti-fingerprint additive is added and stirred for 10-20 minutes at a speed of 1000-2000 r / min, and then the leveling agent is added and stirred for 10-20 minutes at a speed of 1000-2000 r / min, and ultrasonic mixing is used for 10-20 minutes; 6-official polyurethane acrylate, 9-15-official polyurethane acrylate and solvent are uniformly mixed; the two are mixed uniformly;

[0012] S4, preparing UV curing coating: finally adding photoinitiator into the container of ultrasonic mixing in step S3, stirring at a speed of 1000-2000 r / min for 10-30 min, and mixing all raw materials evenly to obtain UV curing coating;

[0013] S5, rapid spraying: The UV curing coating prepared in step S4 needs to be sprayed quickly and evenly onto the surface of the material in a short time. According to the UV curing coating prepared by the above UV curing coating preparation method, the present invention also provides an application method of the UV curing coating, which can spray the UV curing coating quickly and evenly onto the surface of the material in a short time, and UV cure the sprayed surface of the material under the condition of UV light curing energy of 890-920mJ / cm2 for 5-10min;

[0014] Specifically, the application method of the UV curing coating is completed by a curing device for rapid spraying of UV curing coating, and the curing device for rapid spraying of UV curing coating comprises a flow channel chassis and a UV curing chassis arranged on the right side of the flow channel chassis, a flow channel with a groove structure is opened at the top of the flow channel chassis, a bottom root shaft for circular rotation is arranged inside the flow channel, each of the bottom root shafts is arranged upright, two adjacent bottom root shafts are arranged at equal intervals in the flow channel, and a material cover is installed at the top of each bottom root shaft; an isolation cover is fixedly installed at the middle of the top of the flow channel chassis, and a plurality of spray guns are fixedly installed on the outer wall of the flow channel chassis, and the plurality of spray guns are arranged on the outer wall of the flow channel chassis in a staggered manner at high and low levels;

[0015] The inner wall of the UV curing machine box is provided with a material cover flow bin, the material cover flow bin is a U-shaped bend, and the inner wall surface of the material cover flow bin is provided with a UV light ring;

[0016] As a preferred technical solution of the present invention, a chain groove is opened inside the flow channel, and a circulating transmission chain is arranged inside the chain groove, each bottom root shaft is rotatably connected to the transmission chain, and a sprocket is arranged at each end of the inner ring of the transmission chain, and the two sprockets are installed on the top of the rotating shaft, and each of the rotating shaft is rotatably connected to the inside of the flow channel chassis, one of the sprockets is arranged in the flow channel chassis, and a driven gear is fixedly installed on the rotating shaft surface at the bottom of one of the sprockets, and a servo motor is fixedly installed on the inner wall of the flow channel chassis, and the servo motor has an output shaft extending downward, and a driving gear is at the top of the output shaft of the servo motor, and the driving gear is meshed and connected with the driven gear.

[0017] As a preferred technical solution of the present invention, a spur rack is fixedly installed on the inner wall of the chain groove of the runner chassis, and the spur rack is horizontally arranged. A traveling gear is arranged on the bottom surface of the bottom root shaft, and when the chain groove moves to the spur rack position, the traveling gear is meshed and connected with the spur rack.

[0018] As a preferred technical solution of the present invention, a U-shaped tooth path is arranged on the inner wall of the material cover flow bin of the flow channel chassis, and the U-shaped tooth path is arranged along the inner circle track of the transmission chain inside the flow channel chassis. When the material cover flow bin moves to the U-shaped tooth path position, the traveling gear is meshed and connected with the U-shaped tooth path.

[0019] As a preferred technical solution of the present invention, the top end of the bottom root shaft is axially connected with a connecting shaft, the connecting shaft is a round rod structure, the connecting shaft and the bottom root shaft are detachable, the top end of the bottom root shaft is provided with a connecting clamping shaft, the top end of the connecting clamping shaft is fixedly installed with a connecting block, the bottom of the inner wall of the connecting shaft is provided with a connecting sleeve, and the top end of the inner wall of the connecting sleeve is fixedly installed with a permanent magnet.

[0020] As a preferred technical solution of the present invention, the top end of the connecting shaft is provided with a supporting rocker arm that automatically expands elastically, and there are four supporting rockers in total, which are evenly spaced on the outer circumferential surface of the connecting shaft.

[0021] As a preferred technical solution of the present invention, a sleeve groove is opened in the middle part of the outer wall of the connecting shaft, and a sliding sleeve with a cylindrical structure is slidably connected to the surface of the sleeve groove. A swinging second rocker is arranged in the middle part of each supporting rocker, and a second hinge support is arranged at both ends of each second rocker. The second hinge support at one end of each second rocker is fixed to the middle part of the supporting rocker, and the second hinge support at the other end of each second rocker is fixed on the sliding sleeve, and a sleeve compression spring is arranged at the bottom of the sliding sleeve slidably connected to the surface of the sleeve groove.

[0022] As a preferred technical solution of the present invention, a movable sliding hole is opened at the top of the connecting shaft, a slider is slidably connected inside the movable sliding hole, a top cover support shaft is arranged at the top of the slider, a top cover with a disc structure is fixed to the top of the top cover support shaft, and a compression spring is arranged on the bottom surface of the top cover and the top of the connecting shaft.

[0023] According to the above-mentioned method for preparing a UV curing coating and the application of a UV curing coating, the present invention also provides a UV curing coating, which comprises the following components: 20-35% of 6-functional polyurethane acrylate; 3-8% of 9-15-functional polyurethane acrylate; 0.7-1% of nano powder; 0.5-1% of anti-fingerprint additive; 0.3-1% of leveling agent; 0.2-2% of stabilizer; 0.5%-2% of photoinitiator; 50%-75% of solvent, wherein the functionality of the 9-15-functional polyurethane acrylate is 9-12;

[0024] The nano powder is nano calcium carbonate, nano alumina, nano silicon powder or quartz powder; the anti-fingerprint additive is a fluorine-containing acrylic compound; the leveling agent is a hydroxyl-containing silicone-modified polyacrylate, polyether-modified polydimethylsiloxane, polyether-modified siloxane, silicone-modified polyacrylic polymer or polysiloxane-polyether copolymer; the stabilizer is any one or two of a urethane copolymer, a high molecular weight block copolymer, an unsaturated polycarboxylic acid-modified polysiloxane, and a high molecular weight acid ester polymer. ; The photoinitiator is any one or two of (2-ethylhexyl) peroxydicarbonate hydroxyl, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide, cyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 2,4,6(trimethylbenzoyl)diphenylphosphine oxide; the solvent is two to five of ethyl acetate, butyl acetate, acetone, methyl isobutyl ketone, diisobutyl ketone, propylene glycol methyl ether acetate, dipropylene glycol methyl ether, propylene glycol methyl ether, and isopropanol.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention reduces the amount of high-functional resin by adding an appropriate amount of nano powder and anti-fingerprint additive into the container, thereby effectively reducing the coating cost; and these components can produce a synergistic effect, thereby significantly improving the wear resistance of the coating (wear resistance reaches 10,000 times).

[0027] The present invention provides a new and exclusive application method for the UV curing coating, which can quickly and evenly spray the UV curing coating onto the surface of the material in a short time, and UV cure the surface of the sprayed material for 5-10 minutes under the condition of UV light curing energy of 890-920mJ / cm2, so as to obtain a very good coating curing effect. It can significantly improve the physical properties and chemical properties of the surface of the material. The UV curing coating sprayed on the surface of the material can form a layer of coating on the surface of the material after UV light curing. The coating has good anti-fouling ability and high-quality stain resistance. At the same time, due to the rapid spraying, the spraying time is short. The prepared UV curing coating is quickly sprayed onto the surface of the material while maintaining a high internal uniformity. The leveling effect is good when curing the film, and the coating on the surface of the material has good flatness. The DOI can reach 84.3-84.5. Therefore, a protective layer with high wear resistance can be attached to the material. In addition, the preparation method of the UV curing coating provided by the present invention has simple steps, and the raw materials are easily available. It can be convenient for mass production in enterprise workshops, company factories, etc., and has high practical value.

[0028] The application of the UV curing coating provided by the present invention is completed by adopting a curing device for rapid spraying of UV curing coating, and the device adopts an automated assembly line type non-stop continuous spraying to achieve continuous spraying of each material surface, and a plurality of spray guns arranged in a staggered manner at high and low levels are used in the spraying process to synchronously and continuously spray each material surface continuously and non-stop, and each material is rotated at a high speed at the spray gun position, so that the coating sprayed on the surface of each material is thin and uniform in thickness, and the material coating after spraying directly flows into the UV curing chassis for rolling and rotating light curing, and the UV light ring with a U-shaped curved surface is arranged to evenly illuminate each surface of each material, so that the coating surface at any position on the material surface is evenly cured.

[0029] Among them, the present invention has a connecting shaft axially connected to the top end of the bottom root shaft. The connecting shaft and the bottom root shaft are detachable, and the connecting shaft can be quickly removed during the non-stop circulation of the transmission chain to facilitate manual removal of the cured material and the installation of new material to be coated. This method can prepare the material to be coated in advance, and install the material to be coated on the connecting shaft by pre-preparation, so that during the circulation of the transmission chain, the cured material can be quickly replaced manually, and the new material to be coated can be quickly replaced on the top end of the bottom root shaft, which can greatly reduce the busyness of the manual labor during the continuous spraying process of the assembly line, and can effectively maintain the supply of materials for continuous spraying of the assembly line for a long time. The advance preparation can effectively reduce the confusion of the manual labor during the installation of the material, and greatly avoid the phenomenon of the material being skewedly installed on the top end of the bottom root shaft.

[0030] The present invention provides an automatically elastically expanding support swing rod at the top end of the connecting shaft, and there are four support swing rods in total. The four support swing rods are equidistantly arranged on the outer cylindrical surface of the connecting shaft. The material can be quickly installed by directly pressing against the inner wall of the material, the step of the inner wall of the material or the clamping ring specially arranged for the material through the automatically elastically expanding support swing rod. The material can be installed very simply and quickly through the automatically elastically expanding support swing rod, and the installation is firm and reliable. It only needs to turn the inner wall of the material upside down on the top end of the connecting shaft, and the automatically elastically expanding support swing rod automatically clamps the inner wall of the material. The installation is very quick, simple, convenient, firm and reliable. When the automatically elastically expanding support swing rod does not press against the inner wall of the material, the step of the inner wall of the material or the clamping ring specially arranged for the material during the inverted process of the material, the material is pushed upward on the top end of the connecting shaft by the elastically retractable top cover, thereby realizing automatic clamping of the support swing rod, and the material is installed on the top end of the connecting shaft very firmly and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Figure 1 The present invention is a flow chart of the steps of the method for preparing the UV curing coating;

[0033] Figure 2 It is a schematic diagram of the top view of the curing device used for rapid spraying of UV curing coatings according to the present invention;

[0034] Figure 3 It is a schematic diagram of the front cross-sectional structure of a curing device for rapid spraying of UV curing coatings according to the present invention;

[0035] Figure 4 It is a schematic diagram of a top cross-sectional structure of a curing device for rapid spraying of UV curing coatings according to the present invention;

[0036] Figure 5 It is a front cross-sectional schematic diagram of the connection shaft top end and the material cover of the present invention;

[0037] Figure 6 It is a front cross-sectional schematic diagram of the base shaft, the connecting shaft and the material cover of the present invention;

[0038] Figure 7 This is a schematic structural diagram of the bottom surface of the connecting shaft of the present invention;

[0039] Figure 8 It is a bottom view structural schematic diagram of the connecting shaft and the material cover of the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the material cover of the present invention;

[0041] In the figure: flow channel chassis 1, flow channel 2, chain groove 3, isolation shaft 4, rotating shaft 5, spray gun 6, UV curing chassis 7, driven gear 8, driving gear 9, servo motor 10, transmission chain 11, walking gear 12, bottom root shaft 13, connecting card shaft 1301, connecting block 1302, connecting shaft 14, top cover 1401, compression spring 1402, first hinge support 1403, supporting swing arm 1404, second swing arm 1405, second hinge support 1406, sliding sleeve 1407, sleeve compression spring 1408, sleeve slide groove 1409, permanent magnet 1411, connecting sleeve 1412, movable sliding hole 1413, slider 1414, top cover support shaft 1415, spur rack 15, UV light ring 16, U-shaped tooth path 17, rotating bin 18, material cover flow bin 19, isolation cover 20, sprocket 21. DETAILED DESCRIPTION

[0042] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific diagrams. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict.

[0043] Example 1

[0044] The invention provides a UV curing coating, which comprises the following components: 20-35% of 6-functional polyurethane acrylate; 3-8% of 9-15-functional polyurethane acrylate; 0.8% of nano powder; 0.0.8% of anti-fingerprint auxiliary agent; 0.8% of leveling agent; 1.2% of stabilizer; 0.8% of photoinitiator; and 65% of solvent, wherein the functionality of the 9-15-functional polyurethane acrylate is 9-12;

[0045] The nano powder is nano calcium carbonate, nano alumina, nano silicon powder or quartz powder; the anti-fingerprint additive is a fluorine-containing acrylic compound; the leveling agent is a hydroxyl-containing silicone-modified polyacrylate, polyether-modified polydimethylsiloxane, polyether-modified siloxane, silicone-modified polyacrylic polymer or polysiloxane-polyether copolymer; the stabilizer is any one or two of a urethane copolymer, a high molecular weight block copolymer, an unsaturated polycarboxylic acid-modified polysiloxane, and a high molecular weight acid ester polymer. ; The photoinitiator is any one or two of (2-ethylhexyl) peroxydicarbonate hydroxyl, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide, cyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 2,4,6(trimethylbenzoyl)diphenylphosphine oxide; the solvent is two to five of ethyl acetate, butyl acetate, acetone, methyl isobutyl ketone, diisobutyl ketone, propylene glycol methyl ether acetate, dipropylene glycol methyl ether, propylene glycol methyl ether, and isopropanol.

[0046] The wear-resistant UV curing coating provided by the present invention is sprayed on the surface of the material, and after being cured by a UV light curing machine, a tough and wear-resistant paint film can be formed on the surface of the material, with good adhesion to the material, excellent bending performance, high surface hardness, and good wear resistance: the steel wool friction resistance can be as high as 10,000 or more without scratches. In addition, the wear-resistant UV curing coating has the advantages of low odor, no toluene, no halogen, no heavy metals, etc., complies with RoHS standards, and has little harm to the environment.

[0047] In the prior art, a large amount of high-functional resin (mass fraction 20-40%, functionality greater than 6) is usually used to improve the hardness / wear resistance of the material, but usually only 3,000 times of wear resistance can be achieved, and the cost is greatly increased, and the coating is prone to cracking. The present invention, for the first time, reduces the amount of high-functional resin (9-15 functional polyurethane acrylate) (mass fraction 3-8%) by adding an appropriate amount of nano powder and anti-fingerprint additives to the formula, effectively reducing the coating cost; and these components can produce a synergistic effect, thereby significantly improving the wear resistance of the coating (wear resistance reaches 10,000 times).

[0048] Example 2

[0049] See also Figure 1 This embodiment is similar to the above-mentioned embodiment 1, and the similarities are not described in this embodiment. The specific differences are:

[0050] A method for preparing a UV curing coating, the method for preparing the UV curing coating mainly comprises the following steps:

[0051] S1. Add ingredients: Add nano powder, stabilizer and solvent for making UV curing coating into a container according to weight percentage;

[0052] S2. Mixing and stirring: Stir the container at a speed of 1500 r / min for 15 min to mix the nanopowder, stabilizer and solvent added to the container evenly;

[0053] S3, ultrasonic stirring: the nano powder, stabilizer and solvent uniformly mixed in step S2 are ultrasonically mixed for 20 minutes, and then the anti-fingerprint additive is added and stirred at a speed of 1500r / min for 15 minutes, and then the leveling agent is added and stirred at a speed of 1500r / min for 15 minutes, and ultrasonic mixing is used for 15 minutes; 6-official polyurethane acrylate, 9-15-official polyurethane acrylate and solvent are uniformly mixed; the two are mixed uniformly;

[0054] S4, preparing UV curing coating: finally adding photoinitiator into the container of ultrasonic mixing in step S3, stirring at a speed of 1500 r / min for 20 min, and mixing all raw materials evenly to obtain UV curing coating;

[0055] S5, rapid spraying: The UV curing coating prepared in step S4 needs to be sprayed quickly and evenly onto the surface of the material in a short time.

[0056] The materials are mixed and stirred by ultrasonic and mechanical methods. The stirring process has good dispersion of nanoparticles and can evenly disperse the nanoparticles in the mixed system of the coating. At the same time, in the process of UV light curing of UV coatings, it can significantly reduce the occurrence of particle agglomeration and improve the uniformity inside the coating, so that the surface of the material sprayed with UV curing coating can achieve the expected anti-fouling effect.

[0057] The invention reduces the amount of high-functional resin by adding appropriate amounts of nano powder and anti-fingerprint additives into the container, thereby effectively reducing the coating cost; and these components can produce a synergistic effect, thereby significantly improving the wear resistance of the coating.

[0058] Example 3

[0059] See also Figure 2-Figure 9 This embodiment is similar to the above-mentioned embodiment 1 and embodiment 2, and the similarities are not described in this embodiment. The specific differences are:

[0060] An application of a UV curing coating. According to step S5 of the UV curing coating preparation method in Example 2, the UV curing coating needs to be quickly and evenly sprayed onto the surface of the material in a short time. This embodiment also provides an application of a UV curing coating that can be UV-cured for 5-10 minutes on the surface of the material after spraying under the condition that the UV light curing energy is 890-920mJ / cm2;

[0061] Specifically, the application of UV curing paint is completed through the cooperation of a curing device for rapid spraying of UV curing paint, which includes a flow channel chassis 1 and a UV curing chassis 7 arranged on the right side of the flow channel chassis 1. The top of the flow channel chassis 1 is provided with a flow channel 2 with a groove structure, and a circulating root shaft 13 is arranged inside the flow channel 2. Each root shaft 13 is upright, and two adjacent root shafts 13 are arranged at equal intervals in the flow channel 2. A material cover is installed on the top of each root shaft 13; an isolation cover 20 is fixedly installed in the middle of the top of the flow channel chassis 1 to increase protection for the spray gun 6 during the spraying process, and effectively prevent the UV paint sprayed by the spray gun 6 from scattering on the other side of the flow channel chassis 1.

[0062] A plurality of spray guns 6 are fixedly mounted on the outer wall of the flow channel chassis 1, and the plurality of spray guns 6 are staggered at high and low positions on the outer wall of the flow channel chassis 1; the end of each spray gun 6 is connected to a container containing prepared UV-curing paint, and the UV-curing paint in the container is pumped into each spray gun 6 through an oil pump, and is evenly sprayed on the top surface of the flow channel chassis 1 through each spray gun 6.

[0063] Among them, according to the on-site construction requirements, an isolation shaft 4 can be set between two adjacent bottom root shafts 13, so that when it is impossible to install materials on the top of each bottom root shaft 13, an isolation shaft 4 can be set between two adjacent bottom root shafts 13. The isolation shaft 4 can effectively avoid artificial material installation errors. The isolation shaft 4 can adopt a color separation method to distinguish by different colors, or it can adopt a heterogeneous method to distinguish by different difference structures.

[0064] Specifically, in this embodiment, the present invention provides a new and exclusive application method for the UV curing coating, which can quickly and evenly spray the UV curing coating onto the surface of the material in a short time, and UV cure the surface of the sprayed material for 5-10 minutes under the condition of UV light curing energy of 890-920mJ / cm2, thereby obtaining a very good coating curing effect. It can significantly improve the physical properties and chemical properties of the material surface. The UV curing coating sprayed on the material surface can form a coating on the material surface after UV light curing. The coating has good anti-fouling ability and high-quality stain resistance. At the same time, due to rapid spraying, the spraying time is short. The prepared UV curing coating is quickly sprayed onto the material surface while maintaining a high internal uniformity. The leveling effect is good when the film is cured. The coating on the material surface has good flatness, and the DOI can reach 84.3-84.5. Therefore, a protective layer with high wear resistance can be attached to the material. In addition, the preparation method of the UV curing coating provided by the present invention has simple steps, and the raw materials are easily available. It can be convenient for mass production in enterprise workshops, company factories, etc., and has high practical value.

[0065] The application of the UV curing coating provided by the present invention is completed by adopting a curing device for rapid spraying of UV curing coating. The device adopts an automated assembly line type non-stop continuous spraying to achieve continuous spraying of each material surface. During the spraying process, a plurality of spray guns 6 arranged in a staggered manner at high and low levels are used to synchronously and continuously spray each material surface continuously and non-stop. Each material is rotated at a high speed at the spray gun 6 position, so that the coating sprayed on the surface of each material is thin and uniform in thickness. After spraying, the material coating directly flows into the UV curing chassis 7 for rolling and rotating light curing. The UV light ring 16 with a U-shaped curved surface is evenly illuminated on each surface of each material, so that the coating surface at any position on the material surface is evenly cured.

[0066] The inner wall of the UV curing chassis 7 is provided with a material cover flow bin 19, which is a U-shaped bend. The inner wall surface of the material cover flow bin 19 is provided with a UV light ring 16. The UV light ring 16 can generate UV light, so that the surface coating of the material at the top of each bottom root shaft 13 flowing in the material cover flow bin 19 can quickly form a film to form a coating under the UV light, and each bottom root shaft 13 has a rotating movement during the movement inside the UV curing chassis 7, so that the UV curing coating on the surface of each material is evenly cured by light.

[0067] A chain groove 3 is provided inside the flow channel 2, and a circulating transmission chain 11 is arranged inside the chain groove 3. Each bottom root shaft 13 is rotatably connected to the transmission chain 11. A sprocket 21 is provided at each end of the inner circle of the transmission chain 11. The two sprockets 21 are installed on the top of the rotating shaft 5. Each rotating shaft 5 is rotatably connected to the inside of the flow channel chassis 1. One of the sprockets 21 is arranged in the flow channel chassis 1. A driven gear 8 is fixedly installed on the surface of the rotating shaft 5 at the bottom of one of the sprockets 21. A servo motor 10 is fixedly installed on the inner wall of the flow channel chassis 1. The servo motor 10 has an output shaft extending downward. A driving gear 9 is provided at the top of the output shaft of the servo motor 10, and the driving gear 9 is meshed and connected with the driven gear 8.

[0068] Specifically, the servo motor 10 drives the driving gear 9 to rotate, and the driving gear 9 drives the driven gear 8 to rotate during the rotation. The driven gear 8 drives the two sprockets 21 to rotate synchronously during the rotation. The rotation of the sprocket 21 drives the transmission chain 11 to rotate in a circular manner, thereby realizing the non-stop continuous spraying of each material surface using an automated assembly line.

[0069] A spur rack 15 is fixedly installed on the inner wall of the chain groove 3 of the runner chassis 1. The spur rack 15 is arranged horizontally. A travel gear 12 is arranged on the bottom surface of the bottom root shaft 13. When the travel gear 12 moves to the position of the spur rack 15 in the chain groove 3, the travel gear 12 is meshed and connected with the spur rack 15, which is convenient for installation.

[0070] Through the design of the spur rack 15, during the spraying process, multiple spray guns 6 arranged in a staggered manner are used to synchronously and continuously spray each material surface without stopping. With the high-speed rotation of each material at the position of the spray gun 6, the coating sprayed on the surface of each material is thin and uniform in thickness. After spraying, the material coating directly flows into the UV curing box 7 for rolling and rotating light curing. The U-shaped UV light ring 16 is set to evenly illuminate each surface of each material, so that the coating surface at any position on the surface of the material is evenly cured.

[0071] A U-shaped tooth path 17 is arranged on the inner wall of the material cover flow bin 19 of the flow channel chassis 1. The U-shaped tooth path 17 is arranged inside the flow channel chassis 1 along the inner circle track of the transmission chain 11. When the material cover flow bin 19 moves to the position of the U-shaped tooth path 17, the traveling gear 12 is meshed and connected with the U-shaped tooth path 17.

[0072] Through the design of the running gear 12 and the U-shaped tooth path 17, the material coating after spraying can directly flow into the UV curing box 7 for flow-type light curing, and there is self-rotation during the process, so that the U-shaped curved UV light ring 16 can evenly illuminate each surface of each material, so that the coating surface at any position on the surface of the material can be evenly cured.

[0073] The top end of the bottom root shaft 13 is axially connected to the connecting shaft 14, which is a round rod structure. The connecting shaft 14 and the bottom root shaft 13 are designed to be detachable. A connecting clamping shaft 1301 is provided at the top end of the bottom root shaft 13, and a connecting block 1302 is fixedly installed at the top end of the connecting clamping shaft 1301. A connecting sleeve 1412 is provided at the bottom of the inner wall of the connecting shaft 14, and a permanent magnet 1411 is fixedly installed at the top end of the inner wall of the connecting sleeve 1412.

[0074] Specifically, in this embodiment, the present invention is provided with a connecting shaft 14 axially connected to the top end of the bottom root shaft 13. The connecting shaft 14 and the bottom root shaft 13 are detachable, and the connecting shaft 14 can be quickly removed during the non-stop circulation of the transmission chain to facilitate manual removal of the cured material, and also facilitate the installation of new material to be coated. This method can prepare the material to be coated in advance, and install the material to be coated on the connecting shaft 14 by pre-preparation, so that during the circulation of the transmission chain, the cured material can be quickly replaced manually, and the new material to be coated can be quickly replaced on the top end of the bottom root shaft 13. This can greatly reduce the busyness of the manual labor during the continuous spraying process of the assembly line, and can effectively maintain the supply of materials for continuous spraying of the assembly line for a long time. The advance preparation can effectively reduce the confusion of the manual labor during the installation of the material, and greatly avoid the phenomenon of the material being skewedly installed on the top end of the bottom root shaft 13.

[0075] The top of the connecting shaft 14 is provided with a supporting swing rod 1404 that automatically expands elastically. There are four supporting swing rods 1404 in total. The four supporting swing rods 1404 are evenly spaced on the outer cylindrical surface of the connecting shaft 14 to improve the installation firmness of the material at the top of the connecting shaft 14.

[0076] A sleeve groove 1409 is provided in the middle of the outer wall of the connecting shaft 14, and a sliding sleeve 1407 with a cylindrical structure is slidably connected to the surface of the sleeve groove 1409. A swinging second rocker 1405 is provided in the middle of each supporting rocker 1404, and a second hinge support 1406 is provided at both ends of each second rocker 1405. The second hinge support 1406 at one end of each second rocker 1405 is fixed to the middle of the supporting rocker 1404, and the second hinge support 1406 at the other end of each second rocker 1405 is fixed on the sliding sleeve 1407, and a sleeve compression spring 1408 is provided at the bottom of the sliding sleeve 1407 slidably connected to the surface of the sleeve groove 1409.

[0077] A movable sliding hole 1413 is provided at the top of the connecting shaft 14, and a slider 1414 is slidably connected inside the movable sliding hole 1413. A top cover support shaft 1415 is provided at the top of the slider 1414. A top cover 1401 with a disc structure is fixed to the top of the top cover support shaft 1415. A compression spring 1402 is provided between the bottom surface of the top cover 1401 and the top of the connecting shaft 14.

[0078] Specifically, in this embodiment, the present invention adopts the detachable design of the connecting shaft 14 and the bottom root shaft 13, and utilizes the connecting clamping shaft 1301 at the top of the bottom root shaft 13 to directly perform axial insertion and quick installation on the connecting sleeve 1412 at the bottom of the connecting shaft 14. The installation is simple, the installation speed is fast, and the connection position is accurate. The magnetic connection between the connecting block 1302 and the permanent magnet 1411 can realize quick installation and quick release axial separation. The radial rotation between the connecting shaft 14 and the bottom root shaft 13 is limited by the matching connection between the connecting clamping shaft 1301 and the connecting sleeve 1412. The axial magnetic attraction of the connecting block 1302 and the permanent magnet 1411 is firm, which can effectively ensure that the bottom root shaft 13 drives the connecting shaft 14 to rotate and maintains a firm axial connection. The axial magnetic connection between the bottom root shaft 13 and the connecting shaft 14 can enable the manual operation to quickly remove the connecting shaft 14 and install new materials pre-installed on the top of the connecting shaft 14 during the continuous rotation and conveying of the transmission chain.

[0079] Specifically, in this embodiment, the present invention is provided with an automatically elastically expanded support swing rod 1404 at the top end of the connecting shaft 14, and a total of four support swing rods 1404 are provided, and the four support swing rods 1404 are arranged at equal intervals on the outer circumferential surface of the connecting shaft 14. The material can be quickly installed by directly pressing against the inner wall of the material, the step of the inner wall of the material, or the clamping ring specially provided for the material through the automatically elastically expanded support swing rod 1404. The material can be installed very simply and quickly through the automatically elastically expanded support swing rod 1404, and the installation is firm and reliable. It is necessary to turn the inner wall of the material upside down on the top of the connecting shaft 14, and the automatically elastically expanded supporting swing rod 1404 will automatically clamp the inner wall of the material. The installation is very quick, simple, convenient, firm and reliable. During the process of turning the material upside down, when the automatically elastically expanded supporting swing rod 1404 does not press against the inner wall of the material, the step of the inner wall of the material or the clamping ring position specially set for the material, the elastically retractable top cover 1401 is lifted up to push the material upward on the top of the connecting shaft 14, thereby realizing the automatic clamping of the supporting swing rod 1404, and the material is installed on the top of the connecting shaft 14 very firmly and reliably.

[0080] Specifically, in this embodiment, the present invention provides a sleeve groove 1409 in the middle of the outer wall of the connecting shaft 14, and a sleeve compression spring 1408 is provided at the bottom of the sliding sleeve 1407. The sleeve compression spring 1408 is used to realize automatic clamping of the support rocker arm 1404. When the material needs to be removed from the top of the connecting shaft 14, it only needs to gently press the sliding sleeve 1407 downward, and the automatically elastically expanded support rocker arm 1404 will shrink and fold along the outer wall of the connecting shaft 14, and give way through the elasticity of the top cover 1401, so that the sprayed material can be easily removed from the top of the connecting shaft 14, thereby realizing quick disassembly and quick installation between the material and the connecting shaft 14. At this time, as the supporting rocker arm 1404 is folded, the top end of each supporting rocker arm 1404 will swing along the first hinge support 1403, pushing the material downward during the swinging process. At this time, the elasticity of the top cover 1401 allows the sprayed material to be easily removed from the top end of the connecting shaft 14, thereby achieving quick disassembly and installation of the material. The installation efficiency is very high, and the installation and disassembly speed of the material can be significantly improved.

[0081] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for preparing a UV curing coating, characterized in that: The preparation method of the UV curing coating mainly includes the following steps: S1. Add ingredients: Add nano powder, stabilizer and solvent for making UV curing coating into a container according to weight percentage; S2. Mixing and stirring: Stir the container at a speed of 1000-2000 r / min for 10-20 min to mix the nano powder, stabilizer and solvent added to the container evenly; S3, ultrasonic stirring: the nano powder, stabilizer and solvent uniformly mixed in step S2 are ultrasonically mixed for 10-30 minutes, and then the anti-fingerprint additive is added and stirred for 10-20 minutes at a speed of 1000-2000 r / min, and then the leveling agent is added and stirred for 10-20 minutes at a speed of 1000-2000 r / min, and ultrasonic mixing is used for 10-20 minutes; 6-official polyurethane acrylate, 9-15-official polyurethane acrylate and solvent are uniformly mixed; the two are mixed uniformly; S4, preparing UV curing coating: finally adding photoinitiator into the container of ultrasonic mixing in step S3, stirring at a speed of 1000-2000 r / min for 10-30 min, and mixing all raw materials evenly to obtain UV curing coating; S5, rapid spraying: The UV curing coating prepared in step S4 needs to be sprayed quickly and evenly onto the surface of the material in a short time.

2. An application of a UV curing coating, characterized in that: According to step S5 of the method for preparing UV curable coatings according to claim 1, the UV curable coating needs to be sprayed onto the surface of the material quickly and evenly in a short time, and the surface of the material after spraying needs to be UV cured for 5-10 minutes under the condition of UV light curing energy of 890-920mJ / cm2; Specifically, the application of UV curing paint is completed by a curing device for rapid spraying of UV curing paint, which includes a flow channel chassis and a UV curing chassis arranged on the right side of the flow channel chassis, a flow channel with a groove structure is opened at the top of the flow channel chassis, a bottom root shaft for circular rotation is arranged inside the flow channel, each of the bottom root shafts is arranged upright, two adjacent bottom root shafts are arranged at equal intervals in the flow channel, and a material cover is installed at the top of each bottom root shaft; an isolation cover is fixedly installed at the middle of the top of the flow channel chassis, and a plurality of spray guns are fixedly installed on the outer wall of the flow channel chassis, and the plurality of spray guns are arranged on the outer wall of the flow channel chassis in a staggered manner at high and low levels; The inner wall of the UV curing machine box is provided with a material cover flow bin, the material cover flow bin is a U-shaped bend, and the inner wall surface of the material cover flow bin is provided with a UV light ring.

3. The use of a UV curing coating according to claim 2, characterized in that: A chain groove is provided inside the flow channel, and a circulating transmission chain is arranged inside the chain groove, each bottom root shaft is rotatably connected to the transmission chain, a sprocket is provided at each end of the inner ring of the transmission chain, and the two sprockets are installed on the top of the rotating shaft, and each rotating shaft is rotatably connected to the inside of the flow channel chassis, one of the sprockets is arranged in the flow channel chassis, a driven gear is fixedly installed on the rotating shaft surface at the bottom of one of the sprockets, a servo motor is fixedly installed on the inner wall of the flow channel chassis, the servo motor has an output shaft extending downward, and a driving gear is provided at the top of the output shaft of the servo motor, and the driving gear is meshed and connected with the driven gear.

4. The use of a UV curing coating according to claim 3, characterized in that: A spur rack is fixedly installed on the inner wall of the chain groove of the flow channel chassis, and the spur rack is horizontally arranged. A traveling gear is arranged on the bottom surface of the bottom root shaft, and when the chain groove moves to the spur rack position, the traveling gear is meshed and connected with the spur rack.

5. The use of a UV curing coating according to claim 4, characterized in that: A U-shaped tooth path is arranged on the inner wall of the material cover flow bin of the flow channel chassis. The U-shaped tooth path is arranged inside the flow channel chassis along the inner circle track of the transmission chain. When the material cover flow bin moves to the U-shaped tooth path position, the traveling gear is meshed and connected with the U-shaped tooth path.

6. The use of a UV curing coating according to claim 2, characterized in that: The top end of the bottom root shaft is axially connected with a connecting shaft, the connecting shaft is a round rod structure, the connecting shaft and the bottom root shaft are detachable, the top end of the bottom root shaft is provided with a connecting clamping shaft, the top end of the connecting clamping shaft is fixedly installed with a connecting block, the bottom of the inner wall of the connecting shaft is provided with a connecting sleeve, and the top end of the inner wall of the connecting sleeve is fixedly installed with a permanent magnet.

7. The use of a UV curing coating according to claim 6, characterized in that: The top end of the connecting shaft is provided with a supporting swing rod that can expand elastically automatically. There are four supporting swing rods in total. The four supporting swing rods are arranged at equal intervals on the outer circumferential surface of the connecting shaft.

8. The use of a UV curing coating according to claim 7, characterized in that: A sleeve groove is provided in the middle portion of the outer wall of the connecting shaft, and a sliding sleeve with a cylindrical structure is slidably connected to the surface of the sleeve groove. A swinging second rocker is provided in the middle portion of each of the supporting rockers, and second hinge supports are provided at both ends of each of the second rockers. The second hinge support at one end of each of the second rockers is fixed to the middle portion of the supporting rocker, and the second hinge support at the other end of each of the second rockers is fixed to the sliding sleeve, and a sleeve compression spring is provided at the bottom of the sliding sleeve slidably connected to the surface of the sleeve groove.

9. The use of a UV curing coating according to claim 8, characterized in that: A movable sliding hole is provided at the top of the connecting shaft, a slider is slidably connected inside the movable sliding hole, a top cover support shaft is provided at the top of the slider, a top cover with a disc structure is fixed to the top of the top cover support shaft, and a compression spring is provided on the bottom surface of the top cover and the top of the connecting shaft.

10. The use of a UV curing coating according to claim 2, characterized in that: The invention also includes a UV curing coating, which includes the following components: 20-35% of 6-functional polyurethane acrylate; 3-8% of 9-15-functional polyurethane acrylate; 0.7-1% of nano powder; 0.5-1% of anti-fingerprint auxiliary agent; 0.3-1% of leveling agent; 0.2-2% of stabilizer; 0.5%-2% of photoinitiator; 50%-75% of solvent, wherein the functionality of the 9-15-functional polyurethane acrylate is 9-12; The nano powder is nano calcium carbonate, nano alumina, nano silicon powder or quartz powder; the anti-fingerprint additive is a fluorine-containing acrylic compound; the leveling agent is a hydroxyl-containing silicone-modified polyacrylate, polyether-modified polydimethylsiloxane, polyether-modified siloxane, silicone-modified polyacrylic polymer or polysiloxane-polyether copolymer; the stabilizer is any one or two of a urethane copolymer, a high molecular weight block copolymer, an unsaturated polycarboxylic acid-modified polysiloxane, and a high molecular weight acid ester polymer. ; The photoinitiator is any one or two of (2-ethylhexyl) peroxydicarbonate hydroxyl, phenyl bis(2,4,6-trimethylbenzoyl)phosphine oxide, cyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-1-propanone, and 2,4,6(trimethylbenzoyl)diphenylphosphine oxide; the solvent is two to five of ethyl acetate, butyl acetate, acetone, methyl isobutyl ketone, diisobutyl ketone, propylene glycol methyl ether acetate, dipropylene glycol methyl ether, propylene glycol methyl ether, and isopropanol.

Images