Water-based single-component skin-touch art coating and preparation method thereof

Abstract

The invention relates to a water-based single-component skin-touch art coating and a preparation method thereof, and belongs to the field of paints.The water-based single-component skin-touch art coating is prepared from an emulsion A, an emulsion B, a functional aid A, silane coupling agent modified nano-silica, a functional aid B, an emulsion type delustering agent, a coalescing agent, deionized water, a pH regulator and a defoaming agent. A polyurethane thickening agent, a surface active agent, a sterilizing agent and a mildew-proof agent; the water-based single-component skin-touch artistic coating solves the problems that a common skin-touch coating is inconvenient to use, the skin-touch effect is not prominent and not lasting, and the gloss does not reach the standard. The water-based single-component skin-touch artistic coating shows the strong skin-touch experience of the upper layer fluff feeling of a paint film and the skin damping feeling of the surface layer of the paint film.

Description

Technical Field

[0001] The invention belongs to the field of coatings, and in particular relates to a water-based single-component skin-feeling artistic coating and a preparation method thereof. Background Art

[0002] With socioeconomic development, the demand for coatings is becoming increasingly diverse. Personalized, artistic coatings are highly sought after, and skin-effect paint is one such option. Skin-effect paint, named for its resemblance to baby skin, offers numerous advantages, including smoothness, slight elasticity, very low gloss, a delicate surface, superior texture, self-healing properties even with minor scratches, and excellent stain and scratch resistance.

[0003] There are two main types of skin-feel coatings today:

[0004] The first type is light-cured skin-texture, which mainly includes UV coating skin-texture and excimer lamp skin-texture. These require corresponding curing and laminating equipment and are only suitable for factory assembly line production. Furthermore, light-cured coatings inherently have light-shielding properties and oxygen inhibition, while traditional mercury lamps cause environmental pollution and waste resources. The high cost and high level of professionalism required for excimer lamp skin-texture are prohibitive.

[0005] The other type is non-photocuring skin-feel, which mainly includes oily PU skin-feel paint and water-based two-component skin-feel paint. Both require matching curing agents, need to be prepared on the spot, have activation period restrictions, and oily PU skin-feel is not friendly to the natural environment and the use environment.

[0006] The above two categories of skin-feel paints have unsatisfactory skin-feel effects. The skin feeling is not real and strong enough, and the paint film feels more slippery. The skin-feel effect is not durable, and the visual effect cannot achieve the super-matte effect that is popular at this stage. Only the 60-degree angle can reach a gloss below 5°, and the 85-degree angle is much greater than the 50° gloss. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a water-based one-component skin-feel art paint and a preparation method thereof, so as to solve the problems of the inconvenience of using the above-mentioned general skin-feel paint, the unobtrusive and non-lasting skin-feel effect, and the substandard gloss. The water-based one-component skin-feel art paint of the present invention presents a strong skin-feel experience of the velvety feeling of the upper layer of the paint film + the skin damping feeling of the surface layer of the paint film.

[0008] To solve the above problems, the present invention is implemented through the following technical solutions:

[0009] The first object of the present invention is:

[0010] Provided is a water-based one-component skin-feeling artistic paint, comprising the following components in percentage by weight:

[0011] Emulsion A: 10-30%, Emulsion B: 20-60%, Functional additive A: 0.5-10%, Silane coupling agent modified nano-silica: 0.5-2%, Functional additive B: 0.3-1.5%, Emulsion type matting agent: 5-30%, Film-forming additive: 2-4%, Deionized water: 8-14%, pH regulator 0.1-0.3%, Defoaming agent 0.2-0.4%, Polyurethane thickener 0.4-2.2%, Surfactant 0.2-0.4%, Bactericide and mildew-proof agent 0.2-0.8%;

[0012] The sum of all components is 100%;

[0013] The emulsion A is a flexible polyurethane dispersion; the emulsion is anionic, has a 100% elastic modulus of 1 MPA to 8 MPA, and a silicon-based content of 15% to 40%. The flexible polyurethane dispersion is preferably a silicon-modified PUD or PUA, which has a good silicone feel and flexibility while also having a chewy jelly feel and a smooth, skin-friendly feel.

[0014] The emulsion B is a high-toughness polyurethane dispersion; the emulsion is anionic, has a viscosity of 140-200 cps, a tensile strength of 12 MPa-20 MPa, and an elongation at break of 600%-1300%. The high-toughness polyurethane dispersion is preferably an aliphatic polyurethane dispersion, which can form a medium-strength film that is very tough, has high tensile strength and high flexibility.

[0015] The functional additive A is a high solid content hydroxyl-modified composite silicone microsphere, wherein the active ingredient solid content is 60% to 100%, and both ends contain active hydroxyl groups (RC-OH) that can participate in the cross-linking reaction;

[0016] The functional additive B is an ultra-high molecular weight polydimethylsiloxane dispersion with a molecular weight of 500,000 to 1,000,000.

[0017] The further optimization of the water-based one-component skin-feeling artistic coating of the present invention is as follows:

[0018] The emulsion A is one of the emulsions Dolphin1088R, Dolpin1089R3 and Dolpin1072T3 from Guangdong Dolphin New Material.

[0019] The further optimization of the water-based one-component skin-feeling artistic coating of the present invention is as follows:

[0020] The emulsion B is PRIMAL from Dow Chemical TM BINDER U-91.

[0021] The further optimization of the water-based one-component skin-feeling artistic coating of the present invention is as follows:

[0022] The nano-silica modified by the silane coupling agent is one of Shanxi Tianyi nano-materials TYS-816 and TYS-818.

[0023] The introduction of the nano-silica modified by the silane coupling agent of the present invention further improves the bonding degree between the organic emulsion and the inorganic filler, increases the cross-linking strength of the paint film, and improves the scrub resistance.

[0024] The further optimization of the water-based one-component skin-feeling artistic coating of the present invention is as follows:

[0025] The emulsion type matting agent is the water-based polyurethane of Stahl, Holland PD-809, Dow water-based acrylic matting agent OPTI-MATT TM One of AB-2 organic matting agents.

[0026] The introduction of the emulsion-type matting agent of the present invention increases the solid content of the formulation system while achieving a lower gloss that cannot be achieved by ordinary powder-based matting agents, with the gloss at an angle of 85° being less than 10°, and the stain resistance of the paint film is also improved.

[0027] The further optimization of the water-based one-component skin-feeling artistic coating of the present invention is as follows:

[0028] The functional additive A is a high-solid-content terminal hydroxyl-modified composite organosilicon microsphere, which is one of Guangdong Chuying hydroxyl-modified polyorganosiloxane additives M-3062B, M-3062B-3, and M-3062C.

[0029] The introduction of the functional additive A of the present invention, the coarse organic silicon microspheres in the high solid content terminal hydroxyl modified composite organic silicon microspheres and the nano silicon dioxide modified with the silane coupling agent provide a velvety feeling on the upper layer of the paint film.

[0030] The introduction of the functional additive A of the present invention and the fine organic silicon microspheres in the high solid content terminal hydroxyl modified composite organic silicon microspheres in combination with the emulsions A and B provide the skin damping feeling and elastic touch of the surface layer of the paint film.

[0031] The further optimization of the water-based one-component skin-feeling artistic coating of the present invention is as follows:

[0032] The functional additive B is an ultra-high molecular weight polydimethylsiloxane dispersion, with a molecular weight of 500,000 to 1,000,000, such as Dow DOWSIL51, Wacker BS1306CN, etc.

[0033] The introduction of the functional additive B of the present invention, the ultra-high molecular weight polydimethylsiloxane dispersion, and the low surface tension of silicone easily migrate to the surface of the paint film to form an ultra-thin polydimethylsiloxane coating, and the silicone chain segments are easily deflected. When the hand gently touches it, the skin-friendly and smooth feeling of the paint film is further enhanced.

[0034] The further optimization of the water-based one-component skin-feeling artistic coating of the present invention is as follows:

[0035] The film-forming aid is lauryl alcohol ester.

[0036] The second object of the present invention is:

[0037] A method for preparing the aforementioned water-based one-component skin-feeling artistic paint is provided, comprising the following preparation steps:

[0038] Add part of the deionized water to the container, and then place it under the experimental dispersing sand mill, add surfactants and defoaming agents in sequence at a speed of 200-300 r / min, slowly add pH regulator, appropriately increase the speed to 400-500 r / min, slowly add nano-silica modified with silane coupling agent, adjust the speed to 1200-1400 r / min, disperse for 15 minutes, add appropriate amount of deionized water to cool, then add emulsion A and emulsion B, disperse for 3-5 minutes, add emulsion-type matting agent for matting, slowly add film-forming aid, disperse for 3-5 minutes, continue to add functional additives A and functional additives B, dilute the bactericidal and mildewproofing agents with 5 times water and add them slowly, slowly add polyurethane thickener, increase the speed to 500-600 r / min, add the remaining deionized water, and continue stirring for 10 minutes to obtain a water-based one-component skin-feel art paint.

[0039] The water-based one-component skin-feel artistic paint and its preparation method of the present invention solve the problems of the above-mentioned general skin-feel paint in use, such as the lack of prominent and long-lasting skin-feel effect and substandard gloss. It is an artistic paint with a strong skin-feel effect.

[0040] The skin feeling effect of the water-based single-component skin-feeling art paint of the present invention is: upper layer velvety feeling + surface skin damping feeling (see Figure 2 ).

[0041] Upper layer of the paint film: The coarse organic silicon microspheres in the high solid content end-hydroxyl modified composite organic silicon microspheres are combined with the nano-silica modified with a silane coupling agent to provide the velvety feeling of the upper layer of the paint film.

[0042] Paint film surface: The fine silicone microspheres in the high-solid content end-hydroxyl modified composite silicone microspheres are combined with emulsions A and B to provide the paint film surface with skin damping and elastic touch.

[0043] The specific features of the water-based one-component skin-feeling artistic paint and its preparation method of the present invention are as follows:

[0044] Functional additive A: High-solid content end-hydroxyl modified composite silicone microspheres, which provide a velvety feel on the upper layer of the paint film and a skin-damping feel on the surface of the paint film;

[0045] Nano-silica: Silane-coupled modified nano-silica, (1) can be combined with composite silicone microspheres to provide a fluffy feel on the top layer of the paint film; (2) reduce the gloss of the coating;

[0046] Functional additive B: ultra-high molecular weight polydimethylsiloxane (molecular weight 500,000-1,000,000), which changes the skin-friendly and smooth feeling of the paint film surface;

[0047] Emulsion matting agent has the following functions:

[0048] (1) Reduce the gloss of the coating; (2) Cross-link and solidify with the main emulsions A and B to obtain a more delicate low-gloss coating; (3) Improve the water resistance and stain resistance of the coating system. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is an illustration of the coating system involved in the present invention;

[0050] Figure 2 This is a schematic diagram of the skin-feel effect of the water-based one-component skin-feel artistic paint prepared by the present invention.

[0051] Reference numerals:

[0052] 1-Wall base material 2-Latex primer 3-Latex topcoat

[0053] 4-skin-feel coating of the present invention 5-skin-feel coating upper layer 6-skin-feel coating surface layer

[0054] 7-latex paint 8-coarse silicone microspheres

[0055] 9-Silane coupling modified nano-silica 10-fine organosilicon microspheres DETAILED DESCRIPTION

[0056] In order to make the application, technical solutions and advantages of the present invention more clearly understood, the present invention is described in detail with reference to specific embodiments. It should be understood that the embodiments are only used to illustrate the present invention and are not intended to limit the scope of protection of the present invention. Any simple improvement to the preparation method of the present invention based on the concept of the present invention falls within the scope of protection of the present invention.

[0057] Example 1#:

[0058] This embodiment provides a water-based one-component skin-feeling artistic paint, which includes the following components in percentage by weight:

[0059]

[0060]

[0061] The preparation method of the above-mentioned water-based one-component skin-feeling artistic paint comprises the following preparation steps:

[0062] Add part of the deionized water to the container, and then place it under the experimental dispersing sand mill, add surfactants and defoaming agents in sequence at a speed of 200-300 r / min, slowly add pH regulator, appropriately increase the speed to 400-500 r / min, slowly add nano-silica modified with silane coupling agent, adjust the speed to 1200-1400 r / min, disperse for 15 minutes, add appropriate amount of deionized water to cool, then add emulsion A and emulsion B, disperse for 3-5 minutes, add emulsion-type matting agent for matting, slowly add film-forming aid, disperse for 3-5 minutes, continue to add functional additives A and functional additives B, dilute the bactericidal and mildewproofing agents with 5 times water and add them slowly, slowly add polyurethane thickener, increase the speed to 500-600 r / min, add the remaining deionized water, and continue stirring for 10 minutes to obtain a water-based one-component skin-feel art paint.

[0063] Comparative Example 1#:

[0064] This comparative example includes the following components in weight percentage:

[0065]

[0066] The preparation method of Comparative Example 1# is the same as that of Example 1#, and the formula ratio of Comparative Example 1# is basically the same as that of Example 1#, except that nano-silica modified with silane coupling agent is not added and is replaced by deionized water.

[0067] Example 2#:

[0068] This embodiment provides a water-based one-component skin-feeling artistic paint, which includes the following components in percentage by weight:

[0069]

[0070]

[0071] The preparation method of Example 2# is the same as that of Example 1#, except that the various components and corresponding proportions of Example 1# are replaced by the above components and corresponding proportions.

[0072] Comparative Example 2#:

[0073] This comparative example includes the following components in weight percentage:

[0074]

[0075]

[0076] The preparation method, formulation ratio and example 2# are basically the same as example 2#, except that no functional aid A is added, and deionized water is used instead.

[0077] Example 3#

[0078] The present example provides a water-based single-component skin-feeling artistic paint, which comprises the following components by weight percentage:

[0079]

[0080]

[0081] The preparation method of example 3# and example 1# are the same, except that the raw materials and corresponding proportions of example 1# are replaced by the above raw materials and corresponding proportions.

[0082] Comparative example 3#:

[0083] The present comparative example comprises the following components by weight percentage:

[0084]

[0085]

[0086] The preparation method, formulation ratio and example 3# of comparative example 3# are basically the same, except that no functional aid B is added, and deionized water is used instead.

[0087] Comparative example 4#:

[0088] The present comparative example comprises the following components by weight percentage:

[0089]

[0090] The formula of comparative example 4# is a common matte varnish formula.

[0091] The following table is the test method and standard, respectively, for the basic performance test of the water-based single-component skin-feeling varnish of the examples and the comparative examples, and the experimental results are shown in the following table:

[0092] Table 1 Basic performance test of each example

[0093]

[0094] Table 2 Basic performance test of each comparative example

[0095]

[0096]

[0097] Comparison of Examples 1#-3# and Comparative Examples 1#-4# demonstrates that the water-based, one-component, skin-feeling artistic coatings prepared by the present invention exhibit an ultra-matte gloss, with a gloss of less than 10° at an 85-degree angle. Furthermore, the addition of high-solids, hydroxyl-terminated composite organosilicon microspheres provides a more durable skin-feeling effect, while the addition of nano-silica modified with a silane coupling agent enhances scrub resistance.

[0098] The specific application construction process of the water-based one-component skin-feel artistic paint of the present invention is as follows, but the present invention is not limited to the following construction application processes and scenarios.

[0099] Art paint construction process:

[0100] Interface agent → putty → latex primer → latex topcoat → the present invention: water-based single-component skin-feeling artistic paint.

[0101] Note: ① The above construction steps follow the one-base-two-side construction process of the latex paint industry, that is, one coat of primer and two coats of topcoat.

[0102] ② Apply the water-based single-component skin-feeling artistic varnish 2-3 times. (More times will bring better skin-feeling effect).

[0103] The water-based one-component skin-feeling artistic paint of the present invention has various construction methods: roller coating, brush coating, spraying, etc.

[0104] The following are the relevant coating amount data for roller coating:

[0105] Construction tools: wool roller, dilution ratio: 100% original paint;

[0106] First coat: 80-90g / m 2 Second pass: 70-80g / m 2 The third layer: 60-70g / m 2 ;

[0107] Note: The above roller coating application amount is for reference only. The coating amount and dilution ratio can be adjusted appropriately according to different construction methods and scenarios.

[0108] Construction environment requirements: Construction must be carried out in an environment with a temperature greater than 10°C and a humidity less than 75%.

[0109] According to the above construction process, special effects evaluation is carried out 7 days after painting. The evaluation rules are as follows:

[0110] 1. Under the prescribed evaluation environment, provide multiple groups of paint film samples to be evaluated in a given manner and random order to a group of evaluators who have the ability to recognize the tactile characteristics of the paint film;

[0111] 2. The evaluators are required to feel the paint film and rate its perception based on six dimensions: warmth and coldness, smoothness, softness, fuzziness, oiliness, and comfort.

[0112] 3. The number of assessors must be an integer multiple of 20, with a 50% male to 50% female ratio;

[0113] 4. The evaluation and maintenance environment are: temperature (23±2)℃, relative humidity (50±5)%.

[0114] The following are the skin feel evaluation results of the water-based one-component skin feel art paint of the embodiment and the comparative example:

[0115] Table 3 Skin feel evaluation results of Examples and Comparative Examples

[0116]

[0117]

[0118] Note: The more ★ above, the better the effect. It is divided into four levels: excellent, good, medium and poor.

[0119] A comparison of Examples 1# to 3# and Comparative Examples 1# to 4# reveals that the water-based, one-component, skin-feeling artistic paint prepared by the present invention exhibits a strong skin-feeling experience, characterized by a velvety upper layer and a damping effect on the surface. Furthermore, the silane coupling agent-modified nanosilica combined with high-solids end-hydroxyl-modified composite organosilicon microspheres enhances the evaluation of velvety and soft feel. High-solids end-hydroxyl-modified composite organosilicon microspheres comprehensively enhance the skin-feeling experience in the present system. The ultra-high molecular weight polydimethylsiloxane dispersion accumulates on the surface of the paint film, forming an ultrathin organosilicon layer, further enhancing the film's smoothness and oiliness.

[0120] The technical solution of the present invention is mainly through the screening of emulsion types (flexible polyurethane dispersion emulsion A, high-toughness polyurethane dispersion emulsion B), the synergistic compatibility of functional additive A (high solid content end-hydroxyl modified composite silicone microspheres) and silane coupling agent modified nano-silica, and the addition of functional additive B (ultra-high molecular weight polydimethylsiloxane dispersion) and emulsion-type matting agent to finally prepare a water-based one-component skin-feel art paint with an ultra-matte, strong and long-lasting skin feel experience.

[0121] The skin feeling effect of the water-based single-component skin-feeling art paint of the present invention is: the velvety feeling of the upper layer of the paint film + the skin damping feeling of the surface layer of the paint film (seeFigure 2 ).

[0122] Upper layer of the paint film: The coarse organic silicon microspheres in the high solid content end-hydroxyl modified composite organic silicon microspheres are combined with the nano-silica modified with a silane coupling agent to provide the velvety feeling of the upper layer of the paint film.

[0123] Paint film surface: The fine silicone microspheres in the high-solid content end-hydroxyl modified composite silicone microspheres are combined with emulsions A and B to provide the paint film surface with skin damping and elastic touch.

[0124] In summary, the embodiments are merely preferred examples of the present invention and do not limit the present invention in any form. Any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the disclosed technical content shall be regarded as equivalent examples of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

[0125] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0126] The experimental methods in the present invention where specific conditions are not specified are generally based on conventional conditions or conditions recommended by the manufacturer.

[0127] Unless otherwise stated, the various optimization technical solutions in the present invention can be combined with each other.

[0128] Unless otherwise indicated, percentages and parts are by weight.

[0129] Experimental methods without specific conditions specified in the instructions and examples are generally performed under conventional conditions or conditions recommended by the manufacturer.

[0130] Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to those described herein can be applied to the methods of the present invention.

Claims

1. A water-based one-component skin-feeling artistic paint, characterized by: It includes the following components in weight percentage: Emulsion A: 10-30%, Emulsion B: 20-60%, Functional additive A: 0.5-10%, Silane coupling agent modified nano-silica: 0.5-2%, Functional additive B: 0.3-1.5%, Emulsion type matting agent: 5-30%, Film-forming additive: 2-4%, Deionized water: 8-14%, pH regulator 0.1-0.3%, Defoaming agent 0.2-0.4%, Polyurethane thickener 0.4-2.2%, Surfactant 0.2-0.4%, Bactericide and mildewproof agent 0.2-0.8%; The sum of all components is 100%; The emulsion A is a flexible polyurethane dispersion; the emulsion is anionic, the 100% elastic modulus is 1MPA to 8MPA, and the silicon content is 15% to 40%; The emulsion B is a high-toughness polyurethane dispersion; the emulsion is anionic, has a viscosity of 140-200 cps, a tensile strength of 12 MPa-20 MPa, and an elongation at break of 600%-1300%. The functional additive A is a high solid content hydroxyl-modified composite silicone microsphere, wherein the active ingredient solid content is 60% to 100%, and both ends contain active hydroxyl groups (RC-OH) that can participate in the cross-linking reaction; The functional additive B is an ultra-high molecular weight polydimethylsiloxane dispersion with a molecular weight of 500,000 to 1,000,000.

2. The water-based one-component skin-feeling artistic paint according to claim 1, characterized in that: The emulsion A is one of the emulsions Dolphin1088R, Dolpin1089R3 and Dolpin1072T3 from Guangdong Dolphin New Material.

3. The water-based one-component skin-feeling artistic paint according to claim 1, characterized in that: The emulsion B is PRIMAL from Dow Chemical TM BINDER U-91.

4. The water-based one-component skin-feeling artistic paint according to claim 1, characterized in that: The nano-silica modified by the silane coupling agent is one of Shanxi Tianyi nano-materials TYS-816 and TYS-818.

5. The water-based one-component skin-feeling artistic paint according to claim 1, characterized in that: The emulsion type matting agent is the water-based polyurethane of Stahl, Holland PD-809, Dow water-based acrylic matting agent OPTI-MATT TM One of AB-2 organic matting agents.

6. The water-based one-component skin-feeling artistic paint according to claim 1, characterized in that: The functional additive A is a high-solid content terminal hydroxyl-modified composite silicone microsphere, which is one of Guangdong Chuying hydroxyl-modified polysiloxane additives M-3062B, M-3062B-3, and M-3062C.

7. The water-based one-component skin-feeling artistic paint according to claim 1, characterized in that: The functional additive B is an ultra-high molecular weight polydimethylsiloxane dispersion, with a molecular weight of 500,000 to 1,000,000, such as Dow Chemical's DOWSIL51 or Wacker's BS1306CN.

8. The water-based one-component skin-feeling artistic paint according to claim 1, characterized in that: The film-forming aid is lauryl alcohol ester.

9. A method for preparing the water-based one-component skin-feeling artistic paint according to claim 1, characterized in that: It includes the following preparation steps: Add part of the deionized water to the container, and then place it under the experimental dispersing sand mill, add surfactants and defoaming agents in sequence at a speed of 200-300 r / min, slowly add pH regulator, appropriately increase the speed to 400-500 r / min, slowly add nano-silica modified with silane coupling agent, adjust the speed to 1200-1400 r / min, disperse for 15 minutes, add appropriate amount of deionized water to cool, then add emulsion A and emulsion B, disperse for 3-5 minutes, add emulsion-type matting agent for matting, slowly add film-forming aid, disperse for 3-5 minutes, continue to add functional additives A and functional additives B, dilute the bactericidal and mildewproofing agents with 5 times water and add them slowly, slowly add polyurethane thickener, increase the speed to 500-600 r / min, add the remaining deionized water, and continue stirring for 10 minutes to obtain a water-based one-component skin-feel art paint.

Images