Preparation process of initiator-free EB-cured yellowing-resistant and odor-free skin-feeling wood coating

Abstract

The invention discloses a preparation process of an initiator-free EB-cured, yellowing-resistant, odor-free, skin-feeling wood coating, wherein the adhesion primer comprises a No. 1 EB curing resin, a No. 1 EB curing active diluent, and a No. 1 auxiliary agent; the sanding primer comprises a No. 2 EB curing resin, a No. 2 EB curing active diluent, a No. 2 pigment filler, and a No. 2 auxiliary agent; the skin-feeling topcoat comprises a No. 3 EB curing resin, a No. 3 EB curing active diluent, a No. 3 pigment filler, and a No. 3 auxiliary agent; the adhesion primer is first applied, and EB semi-curing is performed; then the sanding primer is applied, and EB full curing is performed; then the skin-feeling topcoat is applied, and EB pre-curing is performed; then 172nm excimer lamp curing is performed; and finally EB full curing is performed. The invention achieves the effect of pre-curing the bottom layer coating while the surface layer is not cured during EB pre-curing, and then curing is performed through a 172nm excimer lamp, so that the coating layer that is pre-cured at the bottom layer but not cured at the surface layer forms wrinkles due to inconsistent shrinkage, so that a matte skin-feeling effect can be achieved without an initiator.

Description

Technical Field

[0001] The invention relates to the field of skin-feel coating preparation, and in particular to a preparation process of an initiator-free EB-cured yellowing-resistant and odor-free skin-feel wood coating. Background Art

[0002] With the continuous progress of science and technology and the continuous improvement of people's living standards, people's demand for spiritual life is getting higher and higher, which requires that home furnishing products not only meet people's basic material functional requirements, but also meet people's pursuit and yearning for spiritual life. Skin-feel furniture can not only create a comfortable and quiet living environment, but also give people a friendly and pleasant feeling when interacting with the human body. Therefore, skin-feel furniture can meet people's emotional needs for furniture to a certain extent.

[0003] At present, all UV / EB skin-feel home coatings, adhesion primers and sanding primers at home and abroad adopt UV curing, and 385nm or 395nm LED lamps are used for pre-curing when preparing skin-feel coatings. Therefore, when preparing skin-feel coatings, their adhesion primers, sanding primers and skin-feel topcoats all contain photoinitiators.

[0004] Photoinitiator is an important component of UV free radical acrylic resin curing. After absorbing light of a certain energy, it produces free radicals, thereby initiating the polymerization reaction of acrylic resin. Photoinitiator has the following problems:

[0005] Safety issues of photoinitiators: During the curing process, the photoinitiator cannot be completely consumed, and the residual photoinitiator will migrate, causing pollution or other safety issues.

[0006] Color, yellowing, and odor issues with photoinitiators:

[0007] Photoinitiators that absorb wavelengths greater than 400nm but do not photobleach, such as thioxanthone, are yellow. Not all photoinitiators are consumed during the curing process, so the residual thioxanthone will show color. Benzoyl free radical photoinitiators commonly used in UV polymerization tend to produce odorous benzaldehyde, and benzoyl free radicals tend to generate yellow benzil or semiquinone compounds. Phosphine oxide photoinitiators also produce several yellow or odorous photoproducts.

[0008] Patent number "CN 108977047 A" discloses "a coil coating based on EB curing". There is no photoinitiator in the patent, but there is no way to achieve a skin-feel effect. Summary of the invention

[0009] The invention aims to provide a preparation process of an initiator-free EB-cured yellowing-resistant, odor-free and skin-sense wood coating.

[0010] The innovation of the present invention is that the bottom layer is pre-cured while the surface layer is not cured by EB pre-curing, and then cured by 172nm excimer lamp, so that the bottom layer is pre-cured while the surface layer is not cured, and wrinkles are formed due to inconsistent shrinkage, so that a matte skin effect can be achieved without an initiator.

[0011] In order to achieve the above-mentioned object of the invention, the technical solution of the present invention is:

[0012] A preparation process of an initiator-free EB-cured yellowing-resistant, odor-free, skin-sense wood coating, comprising the following steps:

[0013] (1) Select paint: including adhesion primer, sanding primer and skin-feel topcoat.

[0014] The adhesion primer comprises No. 1 EB curing resin, No. 1 EB curing active diluent, and No. 1 auxiliary agent;

[0015] The sanding primer comprises No. 2 EB curing resin, No. 2 EB curing active diluent, No. 2 pigment filler and No. 2 auxiliary agent;

[0016] The skin-feel topcoat comprises No. 3 EB curing resin, No. 3 EB curing active diluent, No. 3 pigment filler, and No. 3 auxiliary agent;

[0017] First apply the adhesion primer and perform EB semi-curing;

[0018] Then apply sanding primer and perform EB full curing;

[0019] Then apply skin-feel topcoat and perform EB pre-curing;

[0020] Then use 172 excimer lamp to cure;

[0021] Finally, EB is fully cured.

[0022] Furthermore, the content of No. 1 EB curing resin in the adhesion primer is 50-79.5%, the content of No. 1 EB curing active diluent is 20-49.5%, and the content of No. 1 auxiliary agent is 0.1-0.5%.

[0023] Furthermore, the content of No. 2 EB curing resin in the sanding primer is 30-60%, the content of No. 2 EB curing active diluent is 20-50%, the content of No. 2 color filler is 10-45%, and the content of No. 2 auxiliary agent is 0.1-5%.

[0024] Furthermore, in the skin-feel topcoat, the content of No. 3 EB curing resin is 50-75%, the content of No. 3 EB curing active diluent is 20-45%, the content of No. 3 color filler is 0-20%, and the content of No. 3 auxiliary agent is 0.1-5%.

[0025] Furthermore, the No. 1 EB curing resin includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, and epoxy acrylic resin; the No. 1 EB curing active diluent includes one or a combination of monofunctional, difunctional, trifunctional, and multifunctional acrylic resin monomers; and the No. 1 auxiliary agent is a combination of a leveling agent and a defoaming agent.

[0026] Furthermore, the No. 2 EB curing resin includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, and epoxy acrylic resin; the No. 2 EB curing active diluent includes one or a combination of monofunctional, difunctional, trifunctional, and multifunctional acrylic resin monomers; the No. 2 color filler includes one or a combination of talcum powder, transparent powder, titanium dioxide, iron oxide yellow, iron oxide red, iron oxide black, iron oxide blue, and cobalt blue; the No. 2 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, and anti-settling agent.

[0027] Furthermore, the No. 3 EB curing resin includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, epoxy acrylic resin, and fluorosilicone modified acrylic resin; the No. 3 EB curing active diluent includes one or a combination of monofunctional, difunctional, trifunctional, and polyfunctional acrylic resin monomers; the No. 3 color filler includes one or a combination of silica matte powder, wax powder, titanium dioxide, iron oxide yellow, iron oxide red, iron oxide black, iron oxide blue, and cobalt blue; the No. 3 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, anti-settling agent, anti-fouling auxiliary agent, and mildew and antibacterial agent.

[0028] Furthermore, the voltage of the EB semi-curing is 80-200Kev, the beam current is 10-80mA, and the oxygen content is 10-50000ppm; the voltage of the EB full-curing is 100-200Kev, the beam current is 20-80mA, and the oxygen content is 0-500ppm.

[0029] Furthermore, the EB pre-curing voltage is 80-200 Kev, the beam current is 5-80 mA, and the oxygen content is ≥500 ppm.

[0030] Furthermore, the energy density of the 172 excimer lamp ranges from 100 to 6000 mw / cm2%.

[0031] The beneficial effects of the present invention are:

[0032] 1. In the present invention, during EB pre-curing, the voltage, beam current and oxygen content are controlled so that the electron beam can penetrate to a sufficient depth and the beam current has sufficient energy to initiate the free radical polymerization reaction of the bottom acrylic resin. However, since the oxygen content of the bottom layer is low and the oxygen content of the surface layer is high, the surface layer does not undergo free radical polymerization due to the oxygen inhibition effect, thereby achieving the effect of pre-curing the bottom layer while not curing the surface layer. Then, through a 172nm excimer lamp, the 172nm short-wave ultraviolet light has high energy and can directly initiate the free radical polymerization reaction of the acrylic resin, but the penetration depth is low, <0.1um. Under nitrogen protection, polymerization reaction within 0.1um of the topmost layer can be achieved. When the shrinkage stress generated by the curing of the surface layer is greater than a certain value, wrinkles are formed, so that the coating with the bottom layer pre-cured and the surface layer uncured forms wrinkles due to inconsistent shrinkage, thereby achieving a matte skin effect without an initiator. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below.

[0034] Example 1: A preparation process of an initiator-free EB-cured yellowing-resistant, odor-free, skin-sense wood coating.

[0035] Choose paint: including adhesion primer, sanding primer and skin-feel topcoat,

[0036] The adhesion primer includes No. 1 EB curing resin, No. 1 EB curing active diluent, and No. 1 auxiliary agent; the content of No. 1 EB curing resin in the adhesion primer is 50%, the content of No. 1 EB curing active diluent is 49.5%, and the content of No. 1 auxiliary agent is 0.5%. No. 1 EB curing resin includes polyester acrylic resin and epoxy acrylic resin, and the weight ratio of polyester acrylic resin to epoxy acrylic resin is 1:1; No. 1 EB curing active diluent includes monofunctional acrylic resin monomer; No. 1 auxiliary agent is a combination of leveling agent and defoaming agent; the leveling agent is preferably BYK333; the defoaming agent is BYK055.

[0037] The sanding primer includes No. 2 EB curing resin, No. 2 EB curing active diluent, No. 2 pigment filler, and No. 2 auxiliary agent; the content of No. 2 EB curing resin in the sanding primer is 30%, the content of No. 2 EB curing active diluent is 50%, the content of No. 2 pigment filler is 15%, and the content of No. 2 auxiliary agent is 5%. No. 2 EB curing resin includes one or a combination of several of polyester acrylic resin and epoxy acrylic resin; the weight ratio of epoxy acrylic resin to polyester acrylic resin is 1:1, and No. 2 EB curing active diluent includes monofunctional acrylic resin monomer; No. 2 pigment filler includes talcum powder; No. 2 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, and anti-settling agent; the anti-settling agent is fumed silica Cabot M5, and the dispersant is EFKA4010; the leveling agent is preferably BYK333, and the defoaming agent is BYK055.

[0038] The skin-feel topcoat includes No. 3 EB curing resin, No. 3 EB curing active diluent, No. 3 pigment filler, and No. 3 auxiliary agent; the content of No. 3 EB curing resin in the skin-feel topcoat is 50%, the content of No. 3 EB curing active diluent is 45%, the content of No. 3 pigment filler is 3%, and the content of No. 3 auxiliary agent is 2%. No. 3 EB curing resin includes polyurethane acrylic resin; No. 3 EB curing active diluent includes monofunctional acrylic resin monomer; No. 3 pigment filler includes silica matting powder; No. 3 auxiliary agent is a combination of leveling agent, defoamer, dispersant, anti-settling agent, anti-fouling auxiliary agent, and mildew and antibacterial agent. The dispersant is BYK2009, the leveling agent is BYK333, the defoamer is preferably BYK055, the anti-settling agent is preferably R974, the anti-fouling auxiliary agent is preferably EB-curable fluorosilicone resin, and the mildew and antibacterial agent is preferably DAW502.

[0039] Apply 15g / m2 of adhesion primer with a single roller and perform EB semi-curing; the voltage of EB semi-curing is 80Kev, the beam current is 10mA, and the oxygen content is 10ppm;

[0040] Roll 70g / m2 sanding primer in both forward and reverse directions, and perform EB full curing; EB full curing voltage is 200Kev, beam current is 80mA, and oxygen content is 200ppm. Sand off 20g / m2 horizontally and vertically, and remove dust;

[0041] Apply 15g / m2 skin-feel topcoat by forward and reverse roller coating and leveling; perform EB pre-curing; the EB pre-curing voltage is 80Kev, the beam current is 5mA, and the oxygen content is 500ppm.

[0042] Then perform 172 excimer lamp curing; the energy density range of 172 excimer lamp is 100mw / cm 2 .

[0043] Finally, EB is fully cured, the EB full curing voltage is 100Kev, and the beam current is 20mA.

[0044] Example 2: A preparation process of an initiator-free EB-cured yellowing-resistant, odor-free, skin-sense wood coating.

[0045] Choose paint: including adhesion primer, sanding primer and skin-feel topcoat,

[0046] The adhesion primer includes No. 1 EB curing resin, No. 1 EB curing active diluent, and No. 1 auxiliary agent; the content of No. 1 EB curing resin in the adhesion primer is 69.5%, the content of No. 1 EB curing active diluent is 30.4%, and the content of No. 1 auxiliary agent is 0.1%. No. 1 EB curing resin includes polyester acrylic resin and epoxy acrylic resin, and the weight ratio of polyester acrylic resin to epoxy acrylic resin is 2:1; No. 1 EB curing active diluent includes difunctional acrylic resin monomer; No. 1 auxiliary agent is a combination of leveling agent and defoaming agent. The leveling agent is preferably TEGO410; the defoaming agent is BYK1790.

[0047] The sanding primer includes No. 2 EB curing resin, No. 2 EB curing active diluent, No. 2 pigment filler, and No. 2 auxiliary agent; the content of No. 2 EB curing resin in the sanding primer is 40%, the content of No. 2 EB curing active diluent is 47%, the content of No. 2 pigment filler is 10%, and the content of No. 2 auxiliary agent is 3%. No. 2 EB curing resin includes epoxy acrylic resin and polyester acrylic resin; the weight ratio of epoxy acrylic resin to polyester acrylic resin is 2:1; No. 2 EB curing active diluent includes difunctional acrylic resin monomer; No. 2 pigment filler includes transparent powder; No. 2 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, and anti-settling agent, the anti-settling agent is fumed silica Cabot M5, the dispersant is EFKA4010, the leveling agent is preferably TEGO410, and the defoaming agent is BYK1790.

[0048] The skin-feel topcoat includes No. 3 EB curing resin, No. 3 EB curing active diluent, No. 3 pigment filler, and No. 3 auxiliary agent; the content of No. 3 EB curing resin in the skin-feel topcoat is 75%, the content of No. 3 EB curing active diluent is 20%, and the content of No. 3 auxiliary agent is 5%. No. 3 EB curing resin includes polyester acrylic resin; No. 3 EB curing active diluent includes difunctional acrylic resin monomer; No. 3 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, anti-settling agent, anti-fouling auxiliary agent, and mildew and antibacterial agent. The dispersant is BYK2009, the leveling agent is TEGO410, the defoamer is BYK1790, the anti-settling agent is preferably R974, the anti-fouling auxiliary agent is EB-cured fluorosilicone resin, and the mildew and antibacterial agent is preferably DAW502.

[0049] Apply 15g / m2 of adhesion primer with a single roller and perform EB semi-curing; the voltage of EB semi-curing is 120Kev, the beam current is 30mA, and the oxygen content is 1000ppm;

[0050] Roll 70g / m2 sanding primer in both directions and then perform EB full curing; EB full curing voltage is 140Kev, beam current is 50mA, oxygen content is 100ppm. Sand off 20g / m2 horizontally and vertically, and remove dust;

[0051] Apply 30g / m2 skin-feel topcoat by forward and reverse roller coating and leveling; perform EB pre-curing; the EB pre-curing voltage is 120Kev, the beam current is 20mA, and the oxygen content is 9000ppm.

[0052] Then use 172 excimer lamp to cure; the energy density range of 172 excimer lamp is 1000mw / cm 2 .

[0053] Finally, EB is fully cured, the EB full curing voltage is 150Kev, the beam current is 50mA, and the oxygen content is 100ppm.

[0054] Example 3: A preparation process of an initiator-free EB-cured yellowing-resistant, odor-free, skin-sense wood coating.

[0055] Choose paint: including adhesion primer, sanding primer and skin-feel topcoat,

[0056] The adhesion primer includes No. 1 EB curing resin, No. 1 EB curing active diluent, and No. 1 auxiliary agent; the content of No. 1 EB curing resin in the adhesion primer is 79.5%, the content of No. 1 EB curing active diluent is 20%, and the content of No. 1 auxiliary agent is 0.5%. No. 1 EB curing resin includes polyester acrylic resin and epoxy acrylic resin, and the weight ratio of polyester acrylic resin to epoxy acrylic resin is 3:1; No. 1 EB curing active diluent includes trifunctional acrylic resin monomer; No. 1 auxiliary agent is a combination of leveling agent and defoaming agent. The leveling agent is TEGO2100; the defoaming agent is BYK1790.

[0057] The sanding primer includes No. 2 EB curing resin, No. 2 EB curing active diluent, No. 2 pigment filler, and No. 2 auxiliary agent; the content of No. 2 EB curing resin in the sanding primer is 60%, the content of No. 2 EB curing active diluent is 20%, the content of No. 2 pigment filler is 19.9%, and the content of No. 2 auxiliary agent is 0.1%. No. 2 EB curing resin includes epoxy acrylic resin and polyester acrylic resin; the weight ratio of epoxy acrylic resin to polyester acrylic resin is 3:1; No. 2 EB curing active diluent includes trifunctional acrylic resin monomer; No. 2 pigment filler includes titanium dioxide; No. 2 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, and anti-settling agent. The anti-settling agent is fumed silica Cabot M5, the dispersant is EFKA4010, the leveling agent is TEGO2100, and the defoaming agent is BYK1790.

[0058] The skin-feel topcoat includes No. 3 EB curing resin, No. 3 EB curing active diluent, No. 3 pigment filler, and No. 3 auxiliary agent; the content of No. 3 EB curing resin in the skin-feel topcoat is 54.9%, the content of No. 3 EB curing active diluent is 20%, the content of No. 3 pigment filler is 7%, and the content of No. 3 auxiliary agent is 3%. No. 3 EB curing resin includes acrylic acid resin; No. 2 EB curing active diluent includes tri-functional acrylic resin monomer; No. 3 pigment filler includes titanium dioxide; No. 3 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, anti-settling agent, anti-fouling auxiliary agent, and anti-mildew and anti-bacterial agent. The dispersant is BYK2009, the leveling agent is TEGO2100, the defoaming agent is BYK1790, the anti-settling agent is preferably R974, the anti-fouling auxiliary agent is EB-curable fluorosilicone resin, and the anti-mildew and anti-bacterial agent is DAW502.

[0059] Apply 15g / m2 of adhesion primer with a single roller and perform EB semi-curing; the voltage of EB semi-curing is 160Kev, the beam current is 40mA, and the oxygen content is 10000ppm;

[0060] Roll 70g / m2 sanding primer in both directions and then perform EB full curing; EB full curing voltage is 180Kev, beam current is 60mA, oxygen content is 200ppm. Sand off 20g / m2 horizontally and vertically, and remove dust;

[0061] Apply 30g / m2 skin-feel topcoat by forward and reverse roller coating and leveling; perform EB pre-curing; the EB pre-curing voltage is 110Kev, the beam current is 15mA, and the oxygen content is 10000ppm.

[0062] Then use 172 excimer lamp to cure; the energy density range of 172 excimer lamp is 2000mw / cm 2 .

[0063] Finally, EB is fully cured, the EB full curing voltage is 160Kev, the beam current is 40mA, and the oxygen content is 200ppm.

[0064] Example 4: A preparation process of an initiator-free EB-cured yellowing-resistant, odor-free, skin-sense wood coating.

[0065] Choose paint: including adhesion primer, sanding primer and skin-feel topcoat,

[0066] The adhesion primer includes No. 1 EB curing resin, No. 1 EB curing active diluent, and No. 1 auxiliary agent; the content of No. 1 EB curing resin in the adhesion primer is 60%, the content of No. 1 EB curing active diluent is 39.7%, and the content of No. 1 auxiliary agent is 0.3%. No. 1 EB curing resin includes polyurethane acrylic resin; No. 1 EB curing active diluent includes multifunctional acrylic resin monomer; No. 1 auxiliary agent is a combination of leveling agent and defoaming agent. The leveling agent is preferably BYK333; the defoaming agent is BYK055.

[0067] The sanding primer includes No. 2 EB curing resin, No. 2 EB curing active diluent, No. 2 pigment filler, and No. 2 auxiliary agent; the content of No. 2 EB curing resin in the sanding primer is 32%, the content of No. 2 EB curing active diluent is 21%, the content of No. 2 pigment filler is 45%, and the content of No. 2 auxiliary agent is 2%. No. 2 EB curing resin includes polyurethane acrylic resin; No. 2 EB curing active diluent includes multifunctional acrylic resin monomer; No. 2 pigment filler includes iron oxide yellow; No. 2 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, and anti-settling agent. The anti-settling agent is fumed silica Cabot M5, the dispersant is EFKA4010, the leveling agent is preferably BYK333, and the defoaming agent is preferably BYK055.

[0068] The skin-feel topcoat includes No. 3 EB curing resin, No. 3 EB curing active diluent, No. 3 pigment filler, and No. 3 auxiliary agent; the content of No. 3 EB curing resin in the skin-feel topcoat is 60%, the content of No. 3 EB curing active diluent is 30%, the content of No. 3 pigment filler is 7%, and the content of No. 3 auxiliary agent is 3%. No. 3 EB curing resin includes one or a combination of several of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, epoxy acrylic resin, and fluorosilicone modified acrylic resin; No. 3 EB curing active diluent includes multifunctional acrylic resin monomer; No. 3 pigment filler includes iron oxide yellow; No. 3 auxiliary agent is a combination of leveling agent, defoamer, dispersant, anti-settling agent, anti-fouling auxiliary agent, and mildew and antibacterial agent. The dispersant is BYK2009, the leveling agent is BYK333, the defoamer is preferably BYK055, the anti-settling agent is preferably R974, the anti-fouling auxiliary agent is preferably EB-curable fluorosilicone resin, and the mildew and antibacterial agent is preferably DAW502.

[0069] Apply 15g / m2 of adhesion primer with a single roller and perform EB semi-curing; the voltage of EB semi-curing is 200Kev, the beam current is 80mA, and the oxygen content is 50000ppm;

[0070] Roll 70g / m2 sanding primer in both forward and reverse directions, and perform EB full curing; EB full curing voltage is 200Kev, beam current is 80mA, and oxygen content is 300ppm. Sand off 20g / m2 horizontally and vertically, and remove dust;

[0071] Apply 40g / m2 skin-feel topcoat by forward and reverse roller coating and leveling; perform EB pre-curing; the EB pre-curing voltage is 200Kev, the beam current is 80mA, and the oxygen content is 209500ppm.

[0072] Then use 172 excimer lamp to cure; the energy density range of 172 excimer lamp is 4000mw / cm 2 .

[0073] Finally, EB is fully cured, the EB full curing voltage is 200Kev, the beam current is 80mA, and the oxygen content is 500ppm.

[0074] Example 5: Referring to Example 1: EB curing resin No. 1 includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, and epoxy acrylic resin; EB curing active diluent No. 1 includes one or a combination of monofunctional, difunctional, trifunctional, and polyfunctional acrylic resin monomers; auxiliary agent No. 1 is a combination of leveling agent and defoaming agent.

[0075] No. 2 EB curing resin includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, and epoxy acrylic resin; No. 2 EB curing active diluent includes one or a combination of monofunctional, difunctional, trifunctional, and polyfunctional acrylic resin monomers; No. 2 color filler includes one or a combination of talcum powder, transparent powder, titanium dioxide, iron oxide yellow, iron oxide red, iron oxide black, iron oxide blue, and cobalt blue; No. 2 additive is a combination of leveling agent, defoaming agent, dispersant, and anti-settling agent.

[0076] No. 3 EB curing resin includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, epoxy acrylic resin, and fluorosilicone modified acrylic resin; No. 3 EB curing active diluent includes one or a combination of monofunctional, difunctional, trifunctional, and polyfunctional acrylic resin monomers; No. 3 color filler includes one or a combination of silica matte powder, wax powder, titanium dioxide, iron oxide yellow, iron oxide red, iron oxide black, iron oxide blue, and cobalt blue; No. 3 additive is a combination of leveling agent, defoaming agent, dispersant, anti-settling agent, anti-fouling additive, and mildew and antibacterial agent.

[0077]

[0078]

[0079] The described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A preparation process of an initiator-free EB-cured yellowing-resistant, odor-free, skin-sense wood coating, characterized in that: The following steps are involved: (1) Select paint: including adhesion primer, sanding primer and skin-feel topcoat. The adhesion primer comprises No. 1 EB curing resin, No. 1 EB curing active diluent, and No. 1 auxiliary agent; The sanding primer comprises No. 2 EB curing resin, No. 2 EB curing active diluent, No. 2 pigment filler and No. 2 auxiliary agent; The skin-feel topcoat comprises No. 3 EB curing resin, No. 3 EB curing active diluent, No. 3 pigment filler, and No. 3 auxiliary agent; (2) Apply the adhesion primer first and perform EB semi-curing; (3) Apply sanding primer and perform EB full curing; (4) Apply skin-feel topcoat and perform EB pre-curing; (5) Curing with 172 degree excimer lamp; (6) Finally, EB is fully cured; The voltage of the EB semi-curing is 80-200 Kev, the beam current is 10-80 mA, and the oxygen content is 10-50000 ppm.

2. The preparation process of the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The content of No. 1 EB curing resin in the adhesion primer is 50-79.5%, the content of No. 1 EB curing active diluent is 20-49.5%, and the content of No. 1 auxiliary agent is 0.1-0.5%.

3. The preparation process of the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The content of No. 2 EB curing resin in the sanding primer is 30-60%, the content of No. 2 EB curing active diluent is 20-50%, the content of No. 2 color filler is 10-45%, and the content of No. 2 auxiliary agent is 0.1-5%.

4. The preparation process of the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The content of No. 3 EB curing resin in the skin-feel topcoat is 50-75%, the content of No. 3 EB curing active diluent is 20-45%, the content of No. 3 color filler is 0-20%, and the content of No. 3 auxiliary agent is 0.1-5%.

5. The preparation process of the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The No. 1 EB curing resin includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, and epoxy acrylic resin; the No. 1 EB curing active diluent includes one or a combination of monofunctional, difunctional, trifunctional, and multifunctional acrylic resin monomers; the No. 1 auxiliary agent is a combination of a leveling agent and a defoaming agent.

6. The preparation process of the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The No. 2 EB curing resin includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, and epoxy acrylic resin; the No. 2 EB curing active diluent includes one or a combination of monofunctional, difunctional, trifunctional, and multifunctional acrylic resin monomers; the No. 2 color filler includes one or a combination of talcum powder, transparent powder, titanium dioxide, iron oxide yellow, iron oxide red, iron oxide black, iron oxide blue, and cobalt blue; the No. 2 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, and anti-settling agent.

7. The preparation process of the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The No. 3 EB curing resin includes one or a combination of polyurethane acrylic resin, polyester acrylic resin, acrylic acrylic resin, epoxy acrylic resin, and fluorosilicone modified acrylic resin; the No. 3 EB curing active diluent includes one or a combination of monofunctional, difunctional, trifunctional, and polyfunctional acrylic resin monomers; the No. 3 color filler includes one or a combination of silica matte powder, wax powder, titanium dioxide, iron oxide yellow, iron oxide red, iron oxide black, iron oxide blue, and cobalt blue; the No. 3 auxiliary agent is a combination of leveling agent, defoaming agent, dispersant, anti-settling agent, anti-fouling auxiliary agent, and mildew and antibacterial agent.

8. The process for preparing the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The EB full curing voltage is 100-200 Kev, the beam current is 20-80 mA, and the oxygen content is 0-500 ppm.

9. The process for preparing the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The EB pre-curing voltage is 80-200 Kev, the beam current is 5-80 mA, and the oxygen content is ≥500 ppm.

10. The process for preparing the initiator-free EB-cured yellowing-resistant, odor-free skin-sense wood coating according to claim 1, characterized in that: The energy density of the 172 excimer lamp ranges from 100 to 6000 mw / cm 2 .

Images