CN111073493A

CN111073493A - Antistatic quick-drying type water-based UV (ultraviolet) coating for wood-plastic product and preparation method thereof

Info

Publication number: CN111073493A
Application number: CN201911298888.0A
Authority: CN
Inventors: 储成勇
Original assignee: Anhui Zhisheng Communication Technology Co Ltd
Current assignee: Anhui Zhisheng Communication Technology Co Ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-04-28

Abstract

The invention provides an antistatic quick-drying water-based UV (ultraviolet) coating for wood-plastic products and a preparation method thereof, wherein the coating comprises the following components in parts by weight: the coating is prepared by properly self-preparing and pretreating partial raw materials through reasonable raw material selection and process improvement, so that the dispersion and homogenization effect among the components is effectively improved, the raw materials are strong in reaction activity and good in microcosmic crosslinking binding property, and the prepared coating has excellent antistatic, anticorrosive, wear-resistant, waterproof, antibacterial, antifouling and weather-resistant performances, is strong in curing effect, remarkably improved in coating adhesion, remarkably reduced in VOC content, green and environment-friendly, and can be popularized and applied in markets.

Description

Antistatic quick-drying type water-based UV (ultraviolet) coating for wood-plastic product and preparation method thereof

Technical Field

The invention relates to the technical field of coatings, and particularly relates to an antistatic quick-drying water-based UV coating for wood-plastic products and a preparation method thereof.

Background

The paint is a continuous film which is coated on the surface of a protected or decorated object and can form firm adhesion with the object to be coated, and is a viscous liquid which is prepared by taking resin, oil or emulsion as a main material, adding or not adding pigments and fillers, adding corresponding auxiliary agents and using organic solvent or water. The material can be coated on the surface of an object by different construction processes to form a continuous solid film which is firm in adhesion and has certain strength. The film thus formed is generally called a coating film, also called a paint film or a coating. The coating is mostly made of vegetable oil as a main raw material in the early stage, so the coating is called as 'paint'. Both traditional coating products which take natural substances as raw materials and coating products which take synthetic chemical products as raw materials in modern development belong to organic chemical high polymer materials, and the formed coating film belongs to a high polymer compound type.

The UV coating can be coated by methods such as dip coating, curtain coating, paint coating, spin coating, even vacuum coating and the like, and then cured into a film by ultraviolet photon irradiation. As the name implies, the curing of UV coatings is not separated from the irradiation of UV light. The technology originates from the 70 th international paint market and is a brand-new green technology. The ultraviolet curing coating produced by the technology is called UV coating for short. At the end of the 20 th century, UV curable coatings began to prevail in western, japan, etc., a coating variety representing fashion. The coating is firstly applied to the surface coating treatment of shells of mobile phones, DVDs and walkmans, and then the application field of the coating is further expanded to the fields of household appliances such as cosmetics, televisions, computers and the like.

The water-based UV photocureable coating has the advantages of no Volatile Organic Compound (VOC), small environmental pollution, high curing speed, energy conservation, good performance of cured products, suitability for high-speed automatic production and the like. The traditional coating is easy to volatilize and slow in curing speed, and is not beneficial to environmental protection. Therefore, the water-based UV coating has gradually become an alternative to the conventional coating, and the application range thereof is continuously expanding.

Compared with the traditional oil-based UV coating, the water-based UV coating mainly has the following characteristics that ① reduces curing shrinkage caused by using a large amount of active diluent, and can be used for coating non-absorbent surfaces such as plastics, ② can conveniently control rheology by using cheap diluent water or thickening agent, so that the coating can be used for various coating modes such as roller coating, shower coating, spraying and the like, ③ does not use high-purity active diluent to adjust viscosity, reduces the problems of toxicity, irritation and the like, ④ does not contain volatile organic solvent, is not easy to burn and is relatively safe, ⑤ can obtain an extremely thin coating film, reduces the cost, and ⑥ equipment and containers are easy to clean.

Aqueous UV coatings are now used in a wide range of applications, with undeniable improvement compared to conventional coatings, but at the same time there is still a partial complement, requiring further improvement studies. Such as low adhesion, weak wear resistance, poor scratch resistance, etc., and the drying speed also has room for further improvement.

For example, chinese patent CN104762011A discloses a low gloss aqueous Ultraviolet (UV) curable coating for woodware open effect coating and a production method thereof, which comprises the following components: the low-solid-content low-gloss aqueous UV wood coating disclosed by the invention has the following advantages: low VOC, almost no smell, high efficiency and low solid content, is diluted by water and is solidified by ultraviolet light, thus being suitable for open effect coating; low gloss and natural paint film effect. The coating film has good physical and chemical properties, and also has excellent scratch resistance and hardness.

Therefore, in order to obtain the water-based UV coating with excellent performance and meeting higher requirements, the continuous optimization of the formula and the improvement of the process are an endless way to be explored.

Disclosure of Invention

Aiming at the problems, the invention provides the antistatic quick-drying water-based UV coating for the wood-plastic product and the preparation method thereof, through reasonable raw material selection and process improvement, self-control pretreatment is carried out on partial raw materials, the dispersion and homogenization effects among the components are effectively improved, the raw materials have strong reactivity and good microcosmic crosslinking binding property, the prepared coating has excellent performances of antistatic property, corrosion resistance, wear resistance, water resistance, antibacterial property, antifouling property, weather resistance and the like, the curing effect is strong, the coating adhesive force is remarkably improved, the VOC content is remarkably reduced, the coating is green and environment-friendly, and the coating is popularized and applied in the market.

In order to achieve the above object, the present invention adopts the following technical solutions:

an antistatic quick-drying water-based UV coating for wood-plastic products comprises the following components in parts by weight: 20-30 parts of waterborne polyurethane acrylate resin, 10-30 parts of waterborne epoxy acrylate resin, 2-4 parts of photocatalytic load type sepiolite fiber, 1.5-2 parts of diatom ooze, 0.5-1 part of sodium humate, 1.5-3 parts of photoinitiator, 1-3 parts of auxiliary agent and 8-12 parts of water.

Preferably, the photocatalytic material loaded in the photocatalytic load type sepiolite fiber is copper-doped titanium dioxide, the copper doping amount in the photocatalytic material is 1.2-1.5 wt%, and the loading rate of the photocatalytic material in the sepiolite fiber is 35-40 wt%.

Preferably, the preparation method of the photocatalytic load type sepiolite fiber comprises the following steps: taking materials according to a proportion, grinding copper-doped titanium dioxide in an inert atmosphere for 30-60min, then placing the ground titanium dioxide in a sodium silicate aqueous solution, and oscillating the ground titanium dioxide at a constant temperature of 60-65 ℃ for 1-2h to obtain a mixed solution for later use; putting sepiolite fibers into a polyethylene glycol solution, stirring for 30-60min at 90-95 ℃, then cooling to 40-45 ℃, dropwise adding a dilute nitric acid solution into the sepiolite fibers until the pH value is 4.5 +/-0.2, continuously stirring for 30-60min, washing the sepiolite fibers to be neutral by using deionized water, and drying in vacuum for later use; placing the dried sepiolite fiber in the mixed solution, soaking for 3-5min, taking out, placing in a drying oven, drying at 80-90 deg.C for 60min, heating to 160-170 deg.C, drying for 30-60min, taking out, and naturally cooling.

Preferably, the photoinitiator is a composition of 1-hydroxy-cyclohexyl-phenyl ketone and 2-hydroxy-2-methyl-1-phenyl-1-acetone in a mass ratio of 1-1.5: 2.

Preferably, the auxiliary agent comprises the following components in percentage by mass: 10-20% of defoaming agent, 10-15% of wetting agent, 10-20% of dispersing agent, 5-15% of thickening agent and the balance of curing agent.

Preferably, the defoaming agent is polysiloxane-polyether copolymer; the wetting agent adopts fluorine-based polyether modified polysiloxane; the dispersing agent is a mixture of talcum powder and light calcium carbonate in a mass ratio of 1: 0.3; the thickening agent is a mixture of a cellulose thickening agent and an associated polyurethane thickening agent in a mass ratio of 1: 1.5; the curing agent is a mixture of ethylenediamine, diethylenetriamine and N, N-dimethylaniline with the mass ratio of 1:1.2: 0.4.

Preferably, the preparation method of the antistatic quick-drying water-based UV coating for the wood plastic product comprises the following steps:

1) taking the mahjong diatom ooze and the sodium humate according to the weight parts, respectively grinding and crushing the mahjong diatom ooze and the sodium humate to be less than 0.05 mu m, then blending, adding a proper amount of water into the mixture, stirring and mixing at a high speed for 20-30min, and then carrying out ultrasonic treatment for 3-5min to obtain a first mixed material for later use;

2) adding the photocatalytic load type sepiolite fibers into the first mixed material, uniformly stirring, slowly adding the rest water into the first mixed material under the stirring condition, and stirring while keeping the temperature to obtain a second mixed material for later use;

3) blending the waterborne polyurethane acrylate resin and the waterborne epoxy acrylate resin, stirring and heating the mixture to be liquid under the water bath condition, then sequentially adding the photoinitiator and the second mixture under the stirring condition, and slowly stirring the mixture at 45 ℃ and 60rpm for 0.5 to 2 hours to obtain a third mixture for later use;

4) and adding the auxiliary agent into the third mixed material under the stirring condition, and stirring for 1-2h in a staged manner to obtain a final product.

Preferably, the water consumption in the step 1) is 1.5-2 times of the total mass of the diatom ooze and the sodium humate; the high-speed stirring speed is 800-1200rpm, and the ultrasonic treatment frequency is 30-31 KHz.

Preferably, the heat preservation stirring in the step 2) is specifically 40-50 ℃, and the stirring is performed at 100-120rpm for 30-60 min.

Preferably, the step-wise stirring in the step 4) is specifically performed by taking a cycle of stirring at 300rpm for 10min, stirring at 100rpm for 15min and standing for 5 min.

Due to the adoption of the technical scheme, the invention has the beneficial effects that: according to the invention, through reasonable raw material selection and process improvement, self-made pretreatment is carried out on partial raw materials, the dispersion and homogenization effects among the components are effectively improved, the raw materials are strong in reaction activity and good in microcosmic crosslinking binding property, and the prepared coating has excellent antistatic, anticorrosion, wear-resistant, waterproof, antibacterial, antifouling and weather-resistant performances, is strong in curing effect, remarkably improved in coating adhesive force, remarkably reduced in VOC content, green and environment-friendly, and is prepared for market popularization and application.

The coating disclosed by the invention takes the water-based UV resin as a base material, and the photocatalytic load type sepiolite fibers are added, so that the mechanical property of the coating is improved, and meanwhile, the coating has a good synergistic compatibility with a photoinitiator, and the speed and quality of ultraviolet curing are improved. The catalytic material loaded in the photocatalytic load sepiolite is titanium dioxide containing copper, the two materials are matched with each other, so that the photocatalytic load sepiolite has excellent photocatalytic performance and good antibacterial effect, copper ions and titanium ions can perform secondary reaction of dissociating and recombining in the preparation process of the coating, and are filled and connected in the layered structure of the sepiolite fibers, so that the binding property of metal cations and organic micromolecules is stronger, the structural stability is good, the performance stability is high, and the effective service life is obviously prolonged. In addition, the micromolecule compound curing agent is added, so that the epoxy resin is used for quickly curing, the diatom ooze high-pore flow embedding is carried out, the diatom ooze high-pore flow embedding and the internal coating fiber have good binding property, the catalytic activity is improved, the paint drying speed is accelerated, and the self-adsorption effect is good.

In the preparation process of the coating, diatom ooze and sodium humate are mixed into slurry, then the photocatalytic load type sepiolite fiber is added into the slurry and mixed, and a protective film layer can be formed on the outer layer of the fiber, so that on one hand, the photocatalytic load type sepiolite fiber is combined and formed with high-activity molecular groups in the protective film layer to form a net-shaped chain core structure, on the other hand, the photocatalytic load type sepiolite fiber has good reaction thixotropy, has the promotion effect of rapid mixing reaction in the subsequent resin-based mixing process, and simultaneously endows the coating with excellent physical and chemical properties, and the coating is smooth and uniform, uniform in color and luster and.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Example 1:

an antistatic quick-drying water-based UV coating for wood-plastic products comprises the following components in parts by weight: 25 parts of waterborne polyurethane acrylate resin, 15 parts of waterborne epoxy acrylate resin, 2 parts of photocatalytic load type sepiolite fiber, 1.5 parts of diatom ooze, 0.5 part of sodium humate, 2 parts of photoinitiator, 2 parts of auxiliary agent and 10 parts of water.

Wherein:

the photocatalysis material loaded in the photocatalysis loading type sepiolite fiber is copper-doped titanium dioxide, the copper doping amount in the photocatalysis material is 1.26 wt%, and the loading rate of the photocatalysis material in the sepiolite fiber is 35 wt%;

the photoinitiator is a composition of 1-hydroxy-cyclohexyl-phenyl ketone and 2-hydroxy-2-methyl-1-phenyl-1-acetone in a mass ratio of 1.5: 2;

the auxiliary agent comprises the following components in percentage by mass: 20% of defoaming agent, 15% of wetting agent, 15% of dispersing agent, 10% of thickening agent and the balance of curing agent. The defoaming agent adopts polysiloxane-polyether copolymer; the wetting agent adopts fluorine-based polyether modified polysiloxane; the dispersing agent is a mixture of talcum powder and light calcium carbonate in a mass ratio of 1: 0.3; the thickening agent is a mixture of a cellulose thickening agent and an associated polyurethane thickening agent in a mass ratio of 1: 1.5; the curing agent is a mixture of ethylenediamine, diethylenetriamine and N, N-dimethylaniline with the mass ratio of 1:1.2: 0.4.

The preparation method of the photocatalysis load type sepiolite fiber comprises the following steps: taking materials according to a proportion, grinding copper-doped titanium dioxide in an inert atmosphere for 40min, then placing the ground materials in a sodium silicate aqueous solution, and oscillating the ground materials at a constant temperature of 60-65 ℃ for 2h to obtain a mixed solution for later use; putting sepiolite fibers into a polyethylene glycol solution, stirring for 60min at 90-95 ℃, then cooling to 40-45 ℃, dropwise adding a dilute nitric acid solution into the sepiolite fibers until the pH value is 4.5 +/-0.2, continuously stirring for 30min, washing the sepiolite fibers to be neutral by using deionized water, and drying in vacuum for later use; placing the dried sepiolite fiber in the mixed solution, soaking for 3-5min, taking out, placing in a drying oven, drying at 80 deg.C for 60min, heating to 160 deg.C, drying for 60min, taking out, and naturally cooling.

The preparation method of the antistatic quick-drying water-based UV coating for the wood-plastic product comprises the following steps:

1) taking the mahjong diatom ooze and the sodium humate according to the weight parts, respectively grinding and crushing the diatom ooze and the sodium humate to be less than 0.05 mu m, then blending, adding a proper amount of water into the mixture, wherein the water consumption is 1.5 times of the total mass of the diatom ooze and the sodium humate, stirring and mixing the mixture at a high speed of 1000rpm for 30min, and then carrying out ultrasonic treatment at 30KHz for 5min to obtain a mixed material I for later use;

2) adding the photocatalytic load type sepiolite fibers into the first mixed material, uniformly stirring, slowly adding the rest water into the first mixed material under the stirring condition, and stirring at 40 ℃ for 40min at 120rpm in a heat preservation manner to obtain a second mixed material for later use;

3) blending the waterborne polyurethane acrylate resin and the waterborne epoxy acrylate resin, stirring and heating to a liquid state under the water bath condition, then sequentially adding the photoinitiator and the second mixed material under the stirring condition, and slowly stirring at 45 ℃ and 60rpm for 1h to obtain a third mixed material for later use;

4) and adding the auxiliary agent into the third mixed material under the stirring condition, and stirring for 2 hours in a staged manner to obtain a final product, wherein the staged stirring is specifically stirring for 10 minutes at 300rpm, 15 minutes at 100rpm and 5 minutes at rest in a cycle.

Example 2:

an antistatic quick-drying water-based UV coating for wood-plastic products comprises the following components in parts by weight: 30 parts of waterborne polyurethane acrylate resin, 20 parts of waterborne epoxy acrylate resin, 3 parts of photocatalytic load type sepiolite fiber, 2 parts of diatom ooze, 0.5 part of sodium humate, 3 parts of photoinitiator, 3 parts of auxiliary agent and 10 parts of water.

Wherein:

the photocatalysis material loaded in the photocatalysis loading type sepiolite fiber is copper-doped titanium dioxide, the copper doping amount in the photocatalysis material is 1.3 wt%, and the loading rate of the photocatalysis material in the sepiolite fiber is 40 wt%;

the auxiliary agent comprises the following components in percentage by mass: 15% of defoaming agent, 15% of wetting agent, 20% of dispersing agent, 10% of thickening agent and the balance of curing agent. The defoaming agent adopts polysiloxane-polyether copolymer; the wetting agent adopts fluorine-based polyether modified polysiloxane; the dispersing agent is a mixture of talcum powder and light calcium carbonate in a mass ratio of 1: 0.3; the thickening agent is a mixture of a cellulose thickening agent and an associated polyurethane thickening agent in a mass ratio of 1: 1.5; the curing agent is a mixture of ethylenediamine, diethylenetriamine and N, N-dimethylaniline with the mass ratio of 1:1.2: 0.4.

The preparation method of the photocatalysis load type sepiolite fiber comprises the following steps: taking materials according to a proportion, grinding copper-doped titanium dioxide in an inert atmosphere for 60min, then placing the ground materials in a sodium silicate aqueous solution, and oscillating the ground materials at a constant temperature of 60-65 ℃ for 1h to obtain a mixed solution for later use; putting sepiolite fibers into a polyethylene glycol solution, stirring for 30min at 90-95 ℃, then cooling to 40-45 ℃, dropwise adding a dilute nitric acid solution into the sepiolite fibers until the pH value is 4.5 +/-0.2, continuously stirring for 60min, washing the sepiolite fibers to be neutral by using deionized water, and drying in vacuum for later use; placing the dried sepiolite fiber in the mixed solution, soaking for 3-5min, taking out, placing in a drying oven, drying at 80 deg.C for 60min, heating to 170 deg.C, drying for 60min, taking out, and naturally cooling.

1) taking the mahjong diatom ooze and the sodium humate according to the weight parts, respectively grinding and crushing the diatom ooze and the sodium humate to be less than 0.05 mu m, then blending, adding a proper amount of water into the mixture, wherein the water consumption is 1.5 times of the total mass of the diatom ooze and the sodium humate, stirring and mixing the mixture at a high speed of 1000rpm for 30min, and then carrying out ultrasonic treatment at 31KHz for 3min to obtain a mixed material I for later use;

2) adding the photocatalytic load type sepiolite fibers into the first mixed material, uniformly stirring, slowly adding the rest water into the first mixed material under the stirring condition, and stirring at 50 ℃ at 100rpm for 30min in a heat preservation manner to obtain a second mixed material for later use;

3) blending the waterborne polyurethane acrylate resin and the waterborne epoxy acrylate resin, stirring and heating to a liquid state under the water bath condition, then sequentially adding the photoinitiator and the second mixed material under the stirring condition, and slowly stirring at 45 ℃ and 60rpm for 2h to obtain a third mixed material for later use;

Example 3:

an antistatic quick-drying water-based UV coating for wood-plastic products comprises the following components in parts by weight: 20 parts of waterborne polyurethane acrylate resin, 30 parts of waterborne epoxy acrylate resin, 3 parts of photocatalytic load type sepiolite fiber, 1.5 parts of diatom ooze, 1 part of sodium humate, 2.5 parts of photoinitiator, 2.5 parts of auxiliary agent and 12 parts of water.

Wherein:

the photocatalysis material loaded in the photocatalysis loading type sepiolite fiber is copper-doped titanium dioxide, the copper doping amount in the photocatalysis material is 1.5 wt%, and the loading rate of the photocatalysis material in the sepiolite fiber is 40 wt%;

the photoinitiator is a composition of 1-hydroxy-cyclohexyl-phenyl ketone and 2-hydroxy-2-methyl-1-phenyl-1-acetone in a mass ratio of 1: 2;

the auxiliary agent comprises the following components in percentage by mass: 20% of defoaming agent, 10% of wetting agent, 20% of dispersing agent, 10% of thickening agent and the balance of curing agent. The defoaming agent adopts polysiloxane-polyether copolymer; the wetting agent adopts fluorine-based polyether modified polysiloxane; the dispersing agent is a mixture of talcum powder and light calcium carbonate in a mass ratio of 1: 0.3; the thickening agent is a mixture of a cellulose thickening agent and an associated polyurethane thickening agent in a mass ratio of 1: 1.5; the curing agent is a mixture of ethylenediamine, diethylenetriamine and N, N-dimethylaniline with the mass ratio of 1:1.2: 0.4.

The preparation method of the photocatalysis load type sepiolite fiber comprises the following steps: taking materials according to a proportion, grinding copper-doped titanium dioxide in an inert atmosphere for 30min, then placing the ground materials in a sodium silicate aqueous solution, and oscillating the ground materials at a constant temperature of 60-65 ℃ for 2h to obtain a mixed solution for later use; putting sepiolite fibers into a polyethylene glycol solution, stirring for 60min at 90-95 ℃, then cooling to 40-45 ℃, dropwise adding a dilute nitric acid solution into the sepiolite fibers until the pH value is 4.5 +/-0.2, continuously stirring for 40min, washing the sepiolite fibers to be neutral by using deionized water, and drying in vacuum for later use; placing the dried sepiolite fiber in the mixed solution, soaking for 3-5min, taking out, placing in a drying oven, drying at 90 deg.C for 60min, heating to 170 deg.C, drying for 30min, taking out, and naturally cooling.

1) taking the mahjong diatom ooze and the sodium humate according to the weight parts, respectively grinding and crushing the diatom ooze and the sodium humate to be less than 0.05 mu m, then blending, adding a proper amount of water into the mixture, wherein the water consumption is 2 times of the total mass of the diatom ooze and the sodium humate, stirring and mixing at a high speed of 1200rpm for 20min, and then carrying out ultrasonic treatment at 30-31KHz for 3min to obtain a mixed material I for later use;

2) adding the photocatalytic load type sepiolite fibers into the first mixed material, uniformly stirring, slowly adding the rest water into the first mixed material under the stirring condition, and stirring at 50 ℃ for 30min at 120rpm in a heat preservation manner to obtain a second mixed material for later use;

Example 4:

an antistatic quick-drying water-based UV coating for wood-plastic products comprises the following components in parts by weight: 30 parts of waterborne polyurethane acrylate resin, 30 parts of waterborne epoxy acrylate resin, 4 parts of photocatalytic load type sepiolite fiber, 2 parts of diatom ooze, 0.5 part of sodium humate, 3 parts of photoinitiator, 3 parts of auxiliary agent and 10 parts of water.

Wherein:

the photocatalysis material loaded in the photocatalysis loading type sepiolite fiber is copper-doped titanium dioxide, the copper doping amount in the photocatalysis material is 1.4 wt%, and the loading rate of the photocatalysis material in the sepiolite fiber is 35 wt%;

The preparation method of the photocatalysis load type sepiolite fiber comprises the following steps: taking materials according to a proportion, grinding copper-doped titanium dioxide in an inert atmosphere for 60min, then placing the ground materials in a sodium silicate aqueous solution, and oscillating the ground materials at a constant temperature of 60-65 ℃ for 1h to obtain a mixed solution for later use; putting sepiolite fibers into a polyethylene glycol solution, stirring for 60min at 90-95 ℃, then cooling to 40-45 ℃, dropwise adding a dilute nitric acid solution into the sepiolite fibers until the pH value is 4.5 +/-0.2, continuously stirring for 30min, washing the sepiolite fibers to be neutral by using deionized water, and drying in vacuum for later use; placing the dried sepiolite fiber in the mixed solution, soaking for 3-5min, taking out, placing in a drying oven, drying at 90 deg.C for 60min, heating to 160 deg.C, drying for 60min, taking out, and naturally cooling.

1) taking the mahjong diatom ooze and the sodium humate according to the weight parts, respectively grinding and crushing the diatom ooze and the sodium humate to be less than 0.05 mu m, then blending, adding a proper amount of water into the mixture, wherein the water consumption is 2 times of the total mass of the diatom ooze and the sodium humate, stirring and mixing at a high speed of 1000rpm for 30min, and then carrying out ultrasonic treatment at 30KHz for 5min to obtain a mixed material I for later use;

2) adding the photocatalytic load type sepiolite fibers into the first mixed material, uniformly stirring, slowly adding the rest water into the first mixed material under the stirring condition, and stirring at the temperature of 45 ℃ for 30min at the speed of 120rpm to obtain a second mixed material for later use;

3) blending the waterborne polyurethane acrylate resin and the waterborne epoxy acrylate resin, stirring and heating the mixture to be liquid under the water bath condition, then sequentially adding the photoinitiator and the second mixture under the stirring condition, and slowly stirring the mixture at 45 ℃ and 60rpm for 1.5 hours to obtain a third mixture for later use;

4) and adding the auxiliary agent into the third mixed material under the stirring condition, and stirring for 1 hour in a staged manner to obtain a final product, wherein the staged stirring is specifically stirring for 10 minutes at 300rpm, 15 minutes at 100rpm and 5 minutes at rest in a cycle.

Example 5:

an antistatic quick-drying water-based UV coating for wood-plastic products comprises the following components in parts by weight: 25 parts of waterborne polyurethane acrylate resin, 25 parts of waterborne epoxy acrylate resin, 2 parts of photocatalytic load type sepiolite fiber, 1.5 parts of diatom ooze, 1 part of sodium humate, 1.5 parts of photoinitiator, 2 parts of auxiliary agent and 8 parts of water.

Wherein:

the photocatalysis material loaded in the photocatalysis loading type sepiolite fiber is copper-doped titanium dioxide, the copper doping amount in the photocatalysis material is 1.2 wt%, and the loading rate of the photocatalysis material in the sepiolite fiber is 35 wt%;

the auxiliary agent comprises the following components in percentage by mass: 10-20% of defoaming agent, 10-15% of wetting agent, 10-20% of dispersing agent, 5-15% of thickening agent and the balance of curing agent. The defoaming agent adopts polysiloxane-polyether copolymer; the wetting agent adopts fluorine-based polyether modified polysiloxane; the dispersing agent is a mixture of talcum powder and light calcium carbonate in a mass ratio of 1: 0.3; the thickening agent is a mixture of a cellulose thickening agent and an associated polyurethane thickening agent in a mass ratio of 1: 1.5; the curing agent is a mixture of ethylenediamine, diethylenetriamine and N, N-dimethylaniline with the mass ratio of 1:1.2: 0.4.

The preparation method of the photocatalysis load type sepiolite fiber comprises the following steps: taking materials according to a proportion, grinding copper-doped titanium dioxide in an inert atmosphere for 60min, then placing the ground materials in a sodium silicate aqueous solution, and oscillating the ground materials at a constant temperature of 60-65 ℃ for 2h to obtain a mixed solution for later use; putting sepiolite fibers into a polyethylene glycol solution, stirring for 30min at 90-95 ℃, then cooling to 40-45 ℃, dropwise adding a dilute nitric acid solution into the sepiolite fibers until the pH value is 4.5 +/-0.2, continuously stirring for 60min, washing the sepiolite fibers to be neutral by using deionized water, and drying in vacuum for later use; placing the dried sepiolite fiber in the mixed solution, soaking for 3-5min, taking out, placing in a drying oven, drying at 90 deg.C for 60min, heating to 170 deg.C, drying for 30min, taking out, and naturally cooling.

1) taking the mahjong diatom ooze and the sodium humate according to the weight parts, respectively grinding and crushing the diatom ooze and the sodium humate to be less than 0.05 mu m, then blending, adding a proper amount of water into the mixture, wherein the water consumption is 2 times of the total mass of the diatom ooze and the sodium humate, stirring and mixing the mixture at a high speed of 800rpm for 30min, and then carrying out ultrasonic treatment at 30KHz for 5min to obtain a mixed material I for later use;

2) adding the photocatalytic load type sepiolite fibers into the first mixed material, uniformly stirring, slowly adding the rest water into the first mixed material under the stirring condition, and stirring at 40 ℃ for 60min at 100rpm in a heat preservation manner to obtain a second mixed material for later use;

Example 6:

an antistatic quick-drying water-based UV coating for wood-plastic products comprises the following components in parts by weight: 25 parts of waterborne polyurethane acrylate resin, 10 parts of waterborne epoxy acrylate resin, 3 parts of photocatalytic load type sepiolite fiber, 1.5 parts of diatom ooze, 0.5 part of sodium humate, 1.5 parts of photoinitiator, 1 part of auxiliary agent and 8 parts of water.

Wherein:

the photocatalysis material loaded in the photocatalysis loading type sepiolite fiber is copper-doped titanium dioxide, the copper doping amount in the photocatalysis material is 1.5 wt%, and the loading rate of the photocatalysis material in the sepiolite fiber is 35 wt%;

the auxiliary agent comprises the following components in percentage by mass: 15% of defoaming agent, 10% of wetting agent, 20% of dispersing agent, 15% of thickening agent and the balance of curing agent. The defoaming agent adopts polysiloxane-polyether copolymer; the wetting agent adopts fluorine-based polyether modified polysiloxane; the dispersing agent is a mixture of talcum powder and light calcium carbonate in a mass ratio of 1: 0.3; the thickening agent is a mixture of a cellulose thickening agent and an associated polyurethane thickening agent in a mass ratio of 1: 1.5; the curing agent is a mixture of ethylenediamine, diethylenetriamine and N, N-dimethylaniline with the mass ratio of 1:1.2: 0.4.

The preparation method of the photocatalysis load type sepiolite fiber comprises the following steps: taking materials according to a proportion, grinding copper-doped titanium dioxide in an inert atmosphere for 60min, then placing the ground materials in a sodium silicate aqueous solution, and oscillating the ground materials at a constant temperature of 60-65 ℃ for 1h to obtain a mixed solution for later use; putting sepiolite fibers into a polyethylene glycol solution, stirring for 60min at 90-95 ℃, then cooling to 40-45 ℃, dropwise adding a dilute nitric acid solution into the sepiolite fibers until the pH value is 4.5 +/-0.2, continuously stirring for 30min, washing the sepiolite fibers to be neutral by using deionized water, and drying in vacuum for later use; placing the dried sepiolite fiber in the mixed solution, soaking for 3-5min, taking out, placing in a drying oven, drying at 80 deg.C for 60min, heating to 160 deg.C, drying for 60min, taking out, and naturally cooling.

1) taking the mahjong diatom ooze and the sodium humate according to the weight parts, respectively grinding and crushing the diatom ooze and the sodium humate to be less than 0.05 mu m, then blending, adding a proper amount of water into the mixture, wherein the water consumption is 1.5 times of the total mass of the diatom ooze and the sodium humate, stirring and mixing the mixture at a high speed of 800rpm for 30min, and then carrying out ultrasonic treatment at 31KHz for 3min to obtain a mixed material I for later use;

2) adding the photocatalytic load type sepiolite fibers into the first mixed material, uniformly stirring, slowly adding the rest water into the first mixed material under the stirring condition, and stirring at 50 ℃ for 60min at 100rpm in a heat preservation manner to obtain a second mixed material for later use;

3) blending the waterborne polyurethane acrylate resin and the waterborne epoxy acrylate resin, stirring and heating the mixture to be liquid under the water bath condition, then sequentially adding the photoinitiator and the second mixture under the stirring condition, and slowly stirring the mixture at 45 ℃ and 60rpm for 0.5h to obtain a third mixture for later use;

The product prepared by the embodiment of the invention is coated on the surface of woodware, the coating thickness is 100 +/-5 mu m, and the measured performance data is as follows:

the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. The antistatic quick-drying water-based UV coating for the wood-plastic product is characterized in that: the paint comprises the following components in parts by weight: 20-30 parts of waterborne polyurethane acrylate resin, 10-30 parts of waterborne epoxy acrylate resin, 2-4 parts of photocatalytic load type sepiolite fiber, 1.5-2 parts of diatom ooze, 0.5-1 part of sodium humate, 1.5-3 parts of photoinitiator, 1-3 parts of auxiliary agent and 8-12 parts of water.

2. The antistatic quick-drying type aqueous UV coating for wood plastic articles according to claim 1, characterized in that: the photocatalysis material loaded in the photocatalysis loading type sepiolite fiber is copper-doped titanium dioxide, the copper doping amount in the photocatalysis material is 1.2-1.5 wt%, and the loading rate of the photocatalysis material in the sepiolite fiber is 35-40 wt%.

3. The antistatic quick-drying type water-based UV coating for the wood plastic product as claimed in claim 2, wherein the preparation method of the photocatalytic load type sepiolite fiber is as follows: taking materials according to a proportion, grinding copper-doped titanium dioxide in an inert atmosphere for 30-60min, then placing the ground titanium dioxide in a sodium silicate aqueous solution, and oscillating the ground titanium dioxide at a constant temperature of 60-65 ℃ for 1-2h to obtain a mixed solution for later use; putting sepiolite fibers into a polyethylene glycol solution, stirring for 30-60min at 90-95 ℃, then cooling to 40-45 ℃, dropwise adding a dilute nitric acid solution into the sepiolite fibers until the pH value is 4.5 +/-0.2, continuously stirring for 30-60min, washing the sepiolite fibers to be neutral by using deionized water, and drying in vacuum for later use; placing the dried sepiolite fiber in the mixed solution, soaking for 3-5min, taking out, placing in a drying oven, drying at 80-90 deg.C for 60min, heating to 160-170 deg.C, drying for 30-60min, taking out, and naturally cooling.

4. The antistatic quick-drying type aqueous UV coating for wood plastic articles according to claim 1, characterized in that: the photoinitiator is a composition of 1-hydroxy-cyclohexyl-phenyl ketone and 2-hydroxy-2-methyl-1-phenyl-1-acetone in a mass ratio of 1-1.5: 2.

5. The antistatic quick-drying water-based UV coating for the wood plastic product, as claimed in claim 1, wherein the auxiliary comprises the following components in percentage by mass: 10-20% of defoaming agent, 10-15% of wetting agent, 10-20% of dispersing agent, 5-15% of thickening agent and the balance of curing agent.

6. The antistatic quick-drying type water-based UV coating for wood plastic articles according to claim 5, characterized in that: the defoaming agent adopts polysiloxane-polyether copolymer; the wetting agent is fluorine-based polyether modified polysiloxane; the dispersing agent is a mixture of talcum powder and light calcium carbonate in a mass ratio of 1: 0.3; the thickening agent is a mixture of a cellulose thickening agent and an associated polyurethane thickening agent in a mass ratio of 1: 1.5; the curing agent is a mixture of ethylenediamine, diethylenetriamine and N, N-dimethylaniline with the mass ratio of 1:1.2: 0.4.

7. The antistatic quick-drying type water-based UV coating for wood plastic articles according to any one of claims 1 to 6, characterized in that it is prepared by the following method:

8. The antistatic quick-drying type aqueous UV coating for wood plastic articles according to claim 7, characterized in that: the water consumption in the step 1) is 1.5-2 times of the total mass of the diatom ooze and the sodium humate; the high-speed stirring speed is 800-1200rpm, and the ultrasonic treatment frequency is 30-31 KHz.

9. The antistatic quick-drying type aqueous UV coating for wood plastic articles according to claim 7, characterized in that: the heat preservation stirring in the step 2) is specifically 40-50 ℃, and the stirring is carried out at 120rpm for 30-60 min.

10. The antistatic quick-drying type aqueous UV coating for wood plastic articles according to claim 7, characterized in that: the step-wise stirring in the step 4) is specifically stirring in a cycle of stirring at 300rpm for 10min, stirring at 100rpm for 15min and standing for 5 min.