1. The development method of the novel UV ultraviolet curing skin-feel paint is characterized in that the paint comprises the following components in parts by weight: 15-45 parts of reactive prepolymer, 5-20 parts of monofunctional reactive diluent, 10-30 parts of bifunctional reactive diluent, 20-40 parts of trifunctional reactive diluent, 5-15 parts of matting powder, 2-8 parts of photoinitiator and 1-3 parts of auxiliary agent.

2. The method for developing the novel UV ultraviolet curing skin-feel paint as claimed in claim 1, is characterized in that: the active prepolymer is polyurethane acrylate, and the functionality is 4-8.

3. The method for developing the novel UV ultraviolet curing skin-feel paint as claimed in claim 1, is characterized in that: the monofunctional reactive diluent is monofunctional acrylate, the difunctional reactive diluent is difunctional acrylate, and the trifunctional reactive diluent is trifunctional acrylate; the acrylic ester with single functionality degree is one or a mixture of more than one of acryloyl morpholine, acrylic acid-2-hydroxyethyl ester and methacrylic acid-2-hydroxyethyl ester; the difunctional acrylate is one or a mixture of more than one of neopentyl glycol diacrylate, hexanediol diacrylate, tripropylene glycol diacrylate and 1, 3-butanediol diacrylate; the acrylic ester with three functionality degrees is one or a mixture of more than one of trimethylolpropane triacrylate, pentaerythritol triacrylate, ethoxylated trimethylolpropane triacrylate and propoxylated trimethylolpropane triacrylate.

4. The method for developing the novel UV ultraviolet curing skin-feel paint as claimed in claim 1, is characterized in that: the matting agent is one or a mixture of Texaco matting agent OK412, Texaco matting agent OK500 and Grace matting agent RAD 2105.

5. The method for developing the novel UV ultraviolet curing skin-feel paint as claimed in claim 1, is characterized in that: the photoinitiator is one or a mixture of 1-hydroxycyclohexyl phenyl ketone (184), Benzophenone (BP) and 2-hydroxy-2-methyl phenyl acetone (1173) and is used for providing free radicals and initiating a prepolymer and an active monomer to react to achieve the effect of drying.

6. The method for developing the novel UV ultraviolet curing skin-feel paint as claimed in claim 1, is characterized in that: the auxiliary agent is at least one of a dispersant and a slip agent, the dispersant is Bick BYK180 and Bick BYK190, and the slip agent is Bick BYK3510 and Bick BYK 333.

7. A method for developing a novel UV ultraviolet curing skin-feel coating comprises the following steps:

(1) adding the active diluent and the photoinitiator into a stirring pot according to the weight part for pre-dispersion, and uniformly stirring;

(2) adding the active prepolymer and the auxiliary agent into a stirring pot according to the parts by weight, and uniformly mixing and stirring

(3) Adding flatting powder into a stirring pot according to the weight part, mixing and stirring uniformly to prepare the UV skin-feel paint, and filtering to prepare the high-smoothness UV skin-feel paint.

8. The method for developing the novel UV ultraviolet curing skin-feel paint as claimed in claim 1, is characterized in that: the rotating speed of the stirring in the step (1) is 500-800r/min, and the stirring time is 25-30 min.

9. The method for developing the novel UV ultraviolet curing skin-feel paint as claimed in claim 1, is characterized in that: the rotating speed of the stirring in the step (2) is 500-800r/min, and the stirring time is 25-30 min.

10. The method for developing the novel UV ultraviolet curing skin-feel paint as claimed in claim 1, is characterized in that: the rotation speed of the stirring in the step (3) is 800-1200r/min, the stirring time is 30-45min, and the filtering in the step (3) is performed by using a filter bag with 100-200 meshes.

Background

The modern times change, the science and technology develops, the styles of materials for manufacturing furniture and decoration are also changeable, and with the continuous improvement of living quality and furniture quality requirements of consumers, the skin-feel plate which meets the aesthetic requirements of the consumers appears before people. The skin-sensitive matte board has the eight characteristics of being extremely matte, fingerprint-resistant, non-sticky, stain-resistant, scratch-resistant, repairable, environment-friendly, tasteless and yellowing-resistant. The closed coating effect of the skin-feel paint is realized by coating processes such as a film pressing technology, a coating technology, an excimer lamp curing technology and the like. The film pressing technology is that UV finishing coat is coated on a workpiece with a primer, a skin-feeling film is used for pressing and pressing the skin-feeling finishing coat, the film is removed after the UV light source is cured, and a skin-feeling product pressed by the film is obtained, and the film pressing technology has the defects that only plane products can be processed, the skin-feeling film is disposable, and the operation cost is high; the excimer lamp curing technology is a physical extinction technology invented by the German IOT company, the principle utilizes that the penetration depth of the UV with the wavelength of 172nm is only 100-500nm, only one layer with an extremely thin surface is cured, the polymerization and crosslinking of the thin layer can shrink to form an unsmooth surface, so as to achieve the matte effect of the surface, and the technology is determined that nitrogen protection is used during curing, so that the equipment investment cost is high; the extinction machine process needs to use a large number of winkle lamps (dozens of winkle lamps are needed in one production line), and the equipment investment is huge.

Therefore, there is a need for a novel ultra-matte, highly smooth, UV skin-feel coating that is curable under UV light (without additional equipment investment), does not require a film, and can be used for profile surface finishing.

Disclosure of Invention

The invention aims to provide the ultra-matte and high-smoothness UV skin-feel coating which is reasonable in formula, can be cured under a UV lamp, does not need a film, and can be used for special-shaped surfaces, aiming at the defects of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a method for developing a novel UV ultraviolet curing skin-feel coating comprises the following components in parts by weight: 15-45 parts of reactive prepolymer, 5-20 parts of monofunctional reactive diluent, 10-30 parts of bifunctional reactive diluent, 20-40 parts of trifunctional reactive diluent, 5-15 parts of matting powder, 2-8 parts of photoinitiator and 1-3 parts of auxiliary agent.

Further, the reactive prepolymer is polyurethane acrylate, and the functionality of the reactive prepolymer is 4-8.

Furthermore, the monofunctional reactive diluent is monofunctional acrylate, the difunctional reactive diluent is difunctional acrylate, and the trifunctional reactive diluent is trifunctional acrylate; the acrylic ester with single functionality degree is one or a mixture of more than one of acryloyl morpholine, acrylic acid-2-hydroxyethyl ester and methacrylic acid-2-hydroxyethyl ester; the difunctional acrylate is one or a mixture of more than one of neopentyl glycol diacrylate, hexanediol diacrylate, tripropylene glycol diacrylate and 1, 3-butanediol diacrylate; the acrylic ester with three functionality degrees is one or a mixture of more than one of trimethylolpropane triacrylate, pentaerythritol triacrylate, ethoxylated trimethylolpropane triacrylate and propoxylated trimethylolpropane triacrylate.

Further, the matting agent is one or a mixture of degussa matting agent OK412, degussa matting agent OK500 and Grace matting agent RAD 2105.

Further, the photoinitiator is one or a mixture of 1-hydroxycyclohexyl phenyl ketone (184), Benzophenone (BP) and 2-hydroxy-2-methyl phenyl acetone (1173) and is used for providing free radicals and initiating the prepolymer and the active monomer to react to achieve the drying effect.

Further, the auxiliary agent is at least one of a dispersing agent and a slip agent, the dispersing agent is Bick BYK180 and Bick BYK190, and the slip agent is Bick BYK3510 and Bick BYK 333.

A method for developing a novel UV ultraviolet curing skin-feel coating comprises the following steps:

(1) adding the active diluent and the photoinitiator into a stirring pot according to the weight part for pre-dispersion, and uniformly stirring;

(2) adding the active prepolymer and the auxiliary agent into a stirring pot according to the parts by weight, and uniformly mixing and stirring

(3) Adding flatting powder into a stirring pot according to the weight part, mixing and stirring uniformly to prepare the UV skin-feel paint, and filtering to prepare the high-smoothness UV skin-feel paint.

Further, the rotation speed of the stirring in the step (1) is 500-.

Further, the rotation speed of the stirring in the step (2) is 500-.

Further, the rotation speed of the stirring in the step (3) is 800-.

Compared with the prior art, the invention has the beneficial effects that:

1. the multifunctional polyurethane acrylate is matched with the monomer with the functionality of 1-3 for use, so that the high matt degree, scratch resistance, repairability, environmental protection, no smell and yellowing resistance of the skin-feel surface are ensured.

2. The hand feeling and the anti-fouling performance of the skin-feeling surface are ensured by selecting a proper auxiliary agent (such as a slip agent).

3. The high-smoothness skin-feel surface can be prepared by using the UV coating on the roller coating (plane) or spraying (special-shaped surface) process and curing the UV coating under a UV light source, so that the problems that the equipment investment of the excimer lamp curing technology is large and only plane products can be processed are solved, and the requirements of the skin-feel surface on simple process, stable production, extreme dumb, fingerprint prevention, no hand sticking, pollution resistance, scratch resistance, repairability, environmental protection, no smell and yellowing resistance are met.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows: in this example, an ultra-matte, high-smoothness UV skin-feel coating was prepared from the following raw materials in parts by weight:

the reactive prepolymer is urethane acrylate with 4 functionality and 6 functionality (the weight ratio of the two is 1:2), the monofunctional reactive diluent is acryloyl morpholine, the difunctional reactive diluent is hexanediol diacrylate, the trifunctional reactive diluent is a mixture of trimethylolpropane triacrylate, the matting powder is Grace matting powder RAD2105, the photoinitiator is a photoinitiator 1173, and the auxiliary agents are dispersant ByK180 and a slip agent ByK3510 (the weight ratio of the two is 1: 1).

The preparation method comprises the following steps:

(1) adding the active diluent and the photoinitiator into a stirring pot according to the weight parts for pre-dispersion, and uniformly stirring at the stirring speed of 700r/min for 25 min;

(2) adding the active prepolymer and the auxiliary agent into a stirring pot according to the parts by weight, uniformly mixing and stirring the mixture, wherein the stirring speed is 700r/min, and the stirring time is 25min

(3) Adding the matting powder into a stirring pot according to the weight part, uniformly mixing and stirring at the stirring speed of 1050r/min for 40min, and filtering with a 100-mesh filter bag to obtain the UV skin-feel coating.

Example two: in this example, an ultra-matte, high-smoothness UV skin-feel coating was prepared from the following raw materials in parts by weight:

the reactive prepolymer is 6-functionality polyurethane acrylate, the monofunctional reactive diluent is acryloyl morpholine, the difunctional reactive diluent is a mixture of hexanediol diacrylate and neopentyl glycol diacrylate (the weight ratio of the hexanediol diacrylate to the neopentyl glycol diacrylate is 1:1), the trifunctional reactive diluent is trimethylolpropane triacrylate, the matting powder is Texaco matting powder OK500, the photoinitiator is a mixture of a photoinitiator 1173 and a photoinitiator BP (the weight ratio of the photoinitiator to the photoinitiator is 2:3), and the auxiliary agent is a mixture of a dispersant ByK180 and a slip agent ByK3510 (the weight ratio of the two is 1: 1).

The preparation method comprises the following steps:

(1) adding the active diluent and the photoinitiator into a stirring pot according to the weight parts for pre-dispersion, and uniformly stirring at the stirring speed of 700r/min for 25 min;

(2) adding the active prepolymer and the auxiliary agent into a stirring pot according to the parts by weight, uniformly mixing and stirring the mixture, wherein the stirring speed is 700r/min, and the stirring time is 25min

(3) Adding the matting powder into a stirring pot according to the weight part, uniformly mixing and stirring at the stirring speed of 1050r/min for 40min, and filtering with a 100-mesh filter bag to obtain the UV skin-feel coating.

Example three: in this example, an ultra-matte, high-smoothness UV skin-feel coating was prepared from the following raw materials in parts by weight:

the reactive prepolymer is 6-functionality polyurethane acrylate, the monofunctional reactive diluent is 2-hydroxyethyl methacrylate, the difunctional reactive diluent is hexanediol diacrylate, the trifunctional reactive diluent is a mixture of trimethylolpropane triacrylate and ethoxylated trimethylolpropane triacrylate (the weight ratio of the two is 1:1), the matting powder is a mixture of Texasol matting powder OK500 and Grace matting powder RAD2105 (the weight ratio of the two is 7:3), the photoinitiator is a mixture of a photoinitiator 1173 and a photoinitiator BP (the weight ratio of the two is 2:3), and the auxiliary agent is a mixture of dispersant Pic BYK190 and a slip agent Pic BYK333 (the weight ratio of the two is 1: 1).

The preparation method comprises the following steps:

(1) adding the active diluent and the photoinitiator into a stirring pot according to the weight parts for pre-dispersion, and uniformly stirring at the stirring speed of 700r/min for 25 min;

(2) adding the active prepolymer and the auxiliary agent into a stirring pot according to the parts by weight, uniformly mixing and stirring the mixture, wherein the stirring speed is 700r/min, and the stirring time is 25min

(3) Adding the matting powder into a stirring pot according to the weight part, uniformly mixing and stirring at the stirring speed of 1050r/min for 40min, and filtering with a 100-mesh filter bag to obtain the UV skin-feel coating.

Example four: in this example, an ultra-matte, high-smoothness UV skin-feel coating was prepared from the following raw materials in parts by weight:

the reactive prepolymer is 6-functionality polyurethane acrylate and 8-functionality polyurethane acrylate (the weight ratio of the two is 1:1), the monofunctional reactive diluent is acryloyl morpholine and 2-hydroxyethyl methacrylate (the weight ratio of the two is 1:1), the difunctional reactive diluent is hexanediol diacrylate, the trifunctional reactive diluent is trimethylolpropane triacrylate, the flatting powder is a mixture of Descosi flatting powder OK500 and Grace flatting powder RAD2105 (the weight ratio of the two is 3:7), the photoinitiator is a mixture of a photoinitiator 1173 and a photoinitiator BP (the weight ratio of the two is 1:1), and the auxiliary agent is a mixture of dispersant ByK190 and a slip agent ByK333 (the weight ratio of the two is 1: 1).

The preparation method comprises the following steps:

(1) adding the active diluent and the photoinitiator into a stirring pot according to the weight parts for pre-dispersion, and uniformly stirring at the stirring speed of 700r/min for 25 min;

(2) adding the active prepolymer and the auxiliary agent into a stirring pot according to the parts by weight, uniformly mixing and stirring the mixture, wherein the stirring speed is 700r/min, and the stirring time is 25min

(3) Adding the matting powder into a stirring pot according to the weight part, uniformly mixing and stirring at the stirring speed of 1050r/min for 40min, and filtering with a 100-mesh filter bag to obtain the UV skin-feel coating.

Example five: in this example, an ultra-matte, high-smoothness UV skin-feel coating was prepared from the following raw materials in parts by weight:

the active prepolymer is polyurethane acrylate with 8 functionality, the monofunctional active diluent is a mixture of acryloyl morpholine and acrylic acid-2-hydroxyethyl ester (the weight ratio of the acryloyl morpholine to the acrylic acid-2-hydroxyethyl ester is 1:1), the difunctional active diluent is hexanediol diacrylate, the trifunctional active diluent is trimethylolpropane triacrylate, the matting powder is Graes matting powder RAD2105, the photoinitiator is photoinitiator 184 and photoinitiator BP (the weight ratio of the photoinitiator to the photoinitiator is 1:1), and the auxiliary agents are dispersant ByK190 and slip agent ByK333 (the weight ratio of the dispersant to the slip agent is 2: 1).

The preparation method comprises the following steps:

(1) adding the active diluent and the photoinitiator into a stirring pot according to the weight parts for pre-dispersion, and uniformly stirring at the stirring speed of 700r/min for 25 min;

(2) adding the active prepolymer and the auxiliary agent into a stirring pot according to the parts by weight, uniformly mixing and stirring the mixture, wherein the stirring speed is 700r/min, and the stirring time is 25min

(3) Adding the matting powder into a stirring pot according to the weight part, uniformly mixing and stirring at the stirring speed of 1050r/min for 40min, and filtering with a 100-mesh filter bag to obtain the UV skin-feel coating.

In addition, the method for testing the matt degree, the stain resistance and the yellowing resistance of the UV skin-feel coating comprises the following steps:

measurement of gloss (gloss) the skin-feel paint in the examples was applied to a wooden board with a film thickness of 20 μm by a squeegee, the wet film was cured (wavelength: 365nm) by a high-pressure mercury lamp, and the gloss of the cured film was measured with a gloss meter (60 ℃ angle).

Yellowing resistance test the skin-feel paint in the examples was respectively scraped onto a wood board with a film scraper to a film thickness of 50 μm, the wet film was put into a high-pressure mercury lamp to be cured (wavelength: 365nm), the cured film was exposed to the sun, and yellowing properties were observed.

Measurement of stain resistance the skin-feel paint in the examples was applied to a wood board with a film scraper to give a film thickness of 20 μm, the wet film was cured by a high-pressure mercury lamp (wavelength: 365nm), the surface of the cured film was drawn with an aqueous pen or an oil pen, and then wiped with a paper towel.

The test results are shown in the following table:

as can be seen from table 1, the UV skin-feel coatings prepared according to the present invention (examples 1-5) can be cured directly by a UV light source to give ultra-matte, highly lubricious skin-feel coatings with a matte degree below 5 °, substantially no yellowing under sunlight for 48h, and water and oil resistant pens. Therefore, the invention solves the problems of large investment of excimer lamp curing technology equipment, only plane products can be processed, and high operation cost (needing skin-feel film pressure) of film pressure technology, and has the advantages of simple preparation method, easily obtained raw materials, low cost and wide application prospect.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.