Antistatic pigment filler composition, three-dimensional decorative art paint and preparation method and application thereof

Abstract

This invention relates to an antistatic pigment and filler composition, a three-dimensional decorative art coating, a preparation method, and its applications. The antistatic pigment and filler composition comprises conductive pearlescent powder and conductive titanium dioxide; the weight ratio of the conductive pearlescent powder to the conductive titanium dioxide is 15:1 to 5:1; the conductive pearlescent powder is mica coated with one or more layers of semiconductor metal oxide; the conductive titanium dioxide is titanium dioxide coated with one or more layers of semiconductor metal oxide. The antistatic pigment and filler composition of this invention can impart a strong antistatic effect to the prepared coating, resulting in a three-dimensional decorative art coating that not only has an artistic decorative effect but also an antistatic effect. This invention also relates to other applications of coatings and products in paints.

Description

Technical Field

[0001] This invention relates to the field of coatings, specifically to an antistatic pigment and filler composition, a three-dimensional decorative art coating, its preparation method, and its application. Background Technology

[0002] With the continuous improvement of people's demand for home decoration, the market for artistic paints has been booming in recent years. Unlike the single-color decorative effect of traditional latex paint, artistic paints can provide consumers with different decorative effects. They can not only be rich in color, but also diversified in shape, providing textured or different design-oriented painting services. As a result, major paint companies have successively launched different types of artistic paints. In the future, the artistic paint market will inevitably become an important part of home decoration.

[0003] Because artistic paints require design and styling, their surfaces are not as smooth as traditional latex paints; they are usually uneven. Therefore, when exposed to air for extended periods, dust and other pollutants easily accumulate on the surface, especially in recessed areas, affecting the uniformity of the paint film and the overall decorative effect. Furthermore, the dust in these recessed areas is difficult to clean, thus shortening the lifespan of the artistic paint. Therefore, there is an urgent need for a new type of artistic paint that combines artistic decoration with minimal dust accumulation to meet market demand. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an antistatic pigment and filler composition, a three-dimensional decorative art coating, a preparation method, and its application. The antistatic pigment and filler composition can impart a strong antistatic effect to the prepared coating, and the obtained three-dimensional decorative art coating not only has an artistic decorative effect but also has an antistatic effect.

[0005] To solve the above problems, the present invention is achieved through the following technical solution:

[0006] The first objective of this invention is:

[0007] An antistatic pigment and filler composition is provided, comprising conductive pearlescent powder and conductive titanium dioxide;

[0008] The weight ratio of the conductive pearlescent powder to the conductive titanium dioxide is 15:1 to 5:1.

[0009] The conductive pearlescent powder is mica coated with one or more layers of semiconductor metal oxide;

[0010] The conductive titanium dioxide is titanium dioxide coated with one or more layers of semiconductor metal oxide.

[0011] The antistatic pigment and filler composition of the present invention is further optimized as follows:

[0012] The conductive pearlescent powder has a particle size of 10–200 μm (preferably 10–60 μm, more preferably 30–60 μm); and / or

[0013] The conductive titanium dioxide has a particle size of 0.1–0.5 μm (preferably 0.1–0.3 μm).

[0014] The antistatic pigment and filler composition of the present invention is further optimized as follows:

[0015] The conductive pearlescent powder is composed of conductive pearlescent powders of different particle sizes.

[0016] The antistatic pigment and filler composition of the present invention is further optimized as follows:

[0017] The semiconductor metal oxide is tin dioxide doped with metal elements.

[0018] The second objective of this invention is:

[0019] An antistatic three-dimensional decorative art coating is provided, comprising the following components in parts by weight:

[0020] 10-40 parts conductive pearl powder, 1-10 parts conductive titanium dioxide, 15-35 parts emulsion, 10-50 parts water;

[0021] The weight ratio of the conductive pearlescent powder to the conductive titanium dioxide is 15:1 to 5:1 (preferably 10:1, more preferably 8:1).

[0022] The conductive pearlescent powder is mica coated with one or more layers of semiconductor metal oxide;

[0023] The conductive titanium dioxide is titanium dioxide coated with one or more layers of semiconductor metal oxide;

[0024] The emulsion has a glass transition temperature ≥15°C (preferably ≥20°C, more preferably ≥25°C); and / or

[0025] The content of the conductive pearlescent powder and conductive titanium dioxide is 18-25 wt% of the total weight.

[0026] The antistatic three-dimensional decorative art coating of the present invention is further optimized as follows:

[0027] It also includes one or more of the following ingredients in parts by weight:

[0028] Thickener 0.1-10 parts;

[0029] pH adjuster 0.01-5 parts;

[0030] 0.1-5 parts of wetting and dispersing agent;

[0031] Defoamer 0.1-5 parts;

[0032] Leveling agent 0-1 part;

[0033] Film-forming aid 0.1-5 parts;

[0034] Preservative: 0.1-0.8 parts;

[0035] 0.1-0.8 parts of antifungal agent;

[0036] Antifreeze 0.1-1 part.

[0037] The antistatic three-dimensional decorative art coating of the present invention is further optimized as follows:

[0038] It includes one or more of the following features:

[0039] The emulsion is a pure acrylic emulsion (preferably AC808A);

[0040] The thickener is one or a combination of several of the following: cellulose thickener, polyurethane thickener, and alkali-swellable thickener; (the thickener is preferably a combination of TT615 and Acrysol RM-8W; the cellulose thickener is preferably one or a combination of several of 250MBR and NATROSOL 250HBR; the polyurethane thickener is preferably one or a combination of several of TT615 and Acrysol RM-8W; the alkali-swellable thickener is preferably one or a combination of several of AR6159 and Acrysol RM-7).

[0041] The pH adjuster is an organic alcohol amine (preferably Vantex-T);

[0042] The wetting and dispersing agent is one or a combination of several of the following: nonionic polymeric alkyl ether, nonionic polymeric alkyl ester, and nonionic polymeric alkyl alcohol (the nonionic polymeric alkyl ether is preferably SN-WET 996).

[0043] The defoamer is one or a combination of several of the following: silicone defoamers and mineral oil defoamers (preferably, the silicone defoamer is one or a combination of several of the following: Defoamer 334 and SN-DEFOAMER 154; the mineral oil defoamer is preferably one or a combination of several of the following: NXZ and FoamStar ST2410AC).

[0044] The film-forming aid is one or a combination of several alcohol esters and ethers.

[0045] In a preferred embodiment of the present invention, a three-dimensional decorative art coating with both artistic decorative effect and antistatic function is prepared by using a combination of conductive pearlescent powder and conductive titanium dioxide as pigments and fillers, combined with pure acrylic emulsion with a high glass transition temperature.

[0046] Pearlescent powder is composed of a mica substrate and an outer coating. It is generally semi-transparent or transparent. Different coating treatments give pearlescent powder different pearl-like colors from different viewing angles, giving the paint film a pearlescent, shimmering effect. It is one of the important raw materials for artistic coatings. Because pearlescent powder is generally transparent or semi-transparent, its hiding power is usually poor. However, in some artistic coatings, the paint film needs a certain level of hiding power. Therefore, it is often used in combination with other powders to increase the hiding power.

[0047] In this invention, the conductive pearlescent powder is a functional pearlescent powder formed by coating mica as a substrate with a special coating process. By coating it with one or more layers of semiconductor metal oxides, such as tin dioxide doped with metallic elements or tin dioxide doped with non-metallic elements, this invention imparts a certain level of conductivity to the pearlescent powder and titanium dioxide. Furthermore, the pearlescent powder is mostly in flake form, resulting in a large contact area between the flake-shaped conductive pearlescent pigment particles and thus higher conductivity. The materials for this type of conductive pigment are derived from natural inorganic substances, and the product exhibits stable chemical properties, making it resistant to corrosion or oxidation.

[0048] In this invention, adding an appropriate amount of conductive titanium dioxide achieves a win-win effect by increasing hiding power and maximizing conductivity. Conductive titanium dioxide is mostly spherical; the addition of spherical powder to this flake-like structure significantly improves the connectivity between pearlescent pigments, thereby achieving optimal conductivity. This specially structured conductive pearlescent pigment exhibits stronger conductivity than a single flake-like conductive pearlescent pigment.

[0049] In this invention, the ratio of conductive pearlescent powder to conductive titanium dioxide significantly affects the three-dimensional decorative effect and performance of the final paint film of the artistic coating. Through extensive experimentation, the inventors discovered that conductive pearlescent powder can produce a pearlescent, shimmering decorative effect with a dynamic quality, but its hiding power is poor, requiring multiple coats. Conductive titanium dioxide has excellent hiding power and is a good supplementary pigment; however, excessive use can result in a dull paint film, hindering the display of the artistic coating's decorative effect. When the ratio of conductive pearlescent powder to conductive titanium dioxide is less than 5:1, the hiding power of the paint film is too high, affecting the dynamism of the decorative effect. When the ratio is greater than 15:1, the hiding power is too weak, affecting the final application process. Therefore, a balance between 15:1 and 5:1 can be achieved.

[0050] In this invention, the emulsion is preferably an emulsion with a high glass transition temperature. Since the powder in artistic coatings is relatively simple and the emulsion content is high, in order to increase the abrasion resistance of the paint film surface and reduce the possibility of film re-adhesion, it is generally necessary to select an emulsion with a high glass transition temperature, which will result in better paint film performance. The inventors have also confirmed this through extensive experimental screening, and have preferred a pure acrylic emulsion with a high glass transition temperature as the film-forming substance in this artistic coating.

[0051] In this invention, the thickener, pH adjuster, wetting and dispersing agent, defoamer, film-forming aid, antifreeze, preservative, and mildew inhibitor are not particularly limited and can be selected from conventional materials in the art, prepared by conventional methods, or purchased from the market.

[0052] It should be understood that the antistatic three-dimensional decorative art coating of the present invention may also contain other components, as long as they do not affect the performance of the resulting composition.

[0053] The third objective of this invention is:

[0054] A method for preparing the aforementioned antistatic three-dimensional decorative art coating is provided, comprising a first mixture and a second mixture;

[0055] The first mixture comprises the following components in parts by weight:

[0056] 10-40 parts conductive pearlescent powder, 1-10 parts conductive titanium dioxide, 10-50 parts water;

[0057] The stirring speed of the first mixture (when conductive pearl powder and conductive titanium dioxide are added) is preferably 600-2000 rpm, more preferably 800-1500 rpm, and even more preferably 800-1000 rpm.

[0058] The preferred stirring time is 10 to 60 minutes, more preferably 20 to 50 minutes, and even more preferably 25 to 45 minutes.

[0059] The second mixture comprises the following components in parts by weight:

[0060] 15-35 parts emulsion;

[0061] The emulsion has a glass transition temperature ≥15°C (preferably ≥20°C, more preferably ≥25°C); and / or

[0062] The content of the conductive pearlescent powder and conductive titanium dioxide is 18-25 wt% of the total weight.

[0063] It includes the following preparation steps:

[0064] The first mixture and the second mixture are mixed under stirring conditions to prepare the antistatic three-dimensional decorative art coating.

[0065] The fourth objective of this invention is:

[0066] A coating is provided, wherein the aforementioned antistatic three-dimensional decorative art coating is applied to a substrate;

[0067] The substrate is selected from the following group (but not limited to): wall surface, putty board, asbestos-free fiberboard, and fireproof board.

[0068] The fifth objective of this invention is:

[0069] An article is provided, comprising (but not limited to): a substrate, the aforementioned coating, and a primer applied to the surface of the substrate.

[0070] The raw materials used in the following examples are shown in Table 1.

[0071] Table 1

[0072]

[0073] Detailed Implementation

[0074] To make the application, technical solution, and advantages of this invention clearer, the invention is described in detail with reference to specific embodiments. It should be understood that the embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this invention. Any simple improvements to the preparation method of this invention based on the inventive concept fall within the scope of protection of this invention.

[0075] Example 1: An antistatic three-dimensional decorative art coating

[0076] Weigh water according to the weight ratio and add it to the dispersion tank. Control the rotation speed at 200-300 rpm. Add the following in sequence: cellulose thickener, organic alcohol amine pH adjuster, wetting and dispersing agent, and organosilicon defoamer. Adjust the rotation speed to 500-600 rpm. Add conductive pearl powder and conductive titanium dioxide. Adjust the rotation speed to 1000 rpm and disperse for 15 minutes (first mixture).

[0077] Then, control the rotation speed at 500-600 rpm, and add the following in sequence: preservative, mildew inhibitor, emulsion, film-forming aid, mineral oil defoamer, and antifreeze. Disperse for 15 minutes to obtain the antistatic three-dimensional decorative art coating.

[0078] The preparation methods of the following comparative examples are the same as those of the embodiments, except that there are differences in the types and amounts of each raw material.

[0079] The specific addition amounts and performance results of each raw material in the examples and comparative examples are shown in Table 2.

[0080] Table 2. Composition of each raw material in the Examples and Comparative Examples (parts by weight):

[0081]

[0082] Table 3 Performance test results of the examples and comparative examples:

[0083]

[0084] in conclusion:

[0085] As can be seen from the table above, Examples 1 and 2, as decorative coatings, meet the corresponding standards in terms of basic performance, exhibit outstanding environmental performance, with VOC content not detected. The resistivity of the paint film surface was tested according to "SJT11159-1998 - Test Method for Electrostatic Properties of Floor Coverings and Assembled Floors", and the resistivity of the paint film was in the range of 1×10⁶ to 1×10⁹ Ω, indicating that the paint film has good antistatic function.

[0086] Within the specified range, as the amount of conductive titanium dioxide and conductive pearlescent powder increases, the resistivity decreases and the antistatic function improves.

[0087] In Comparative Example 1, where the amount of conductive titanium dioxide and conductive pearl powder exceeds the lower limit set by this technical solution, it can be seen that insufficient addition of conductive titanium dioxide and conductive pearl powder will significantly affect the antistatic function.

[0088] In Comparative Example 2, where the amount of conductive titanium dioxide and conductive pearl powder exceeds the upper limit set in this technical solution, it can be found that after exceeding a certain ratio, the amount of conductive titanium dioxide and conductive pearl powder used, as well as combinations outside the preferred ratio range, may affect the synergistic effect of the two, thereby causing the antistatic performance to no longer increase continuously, but instead to decrease to a certain extent.

[0089] In addition, it will have a certain impact on other basic properties of the coating.

[0090] In Comparative Example 3, a styrene-acrylic emulsion with a relatively low glass transition temperature was used. In the same system of conductive titanium dioxide and conductive pearlescent powder, the resistivity was higher and the antistatic function was significantly lower than that of Example 1.

[0091] In summary, the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any changes, modifications, and evolutions made by those skilled in the art without departing from the scope of the present invention based on the disclosed technical content shall be considered equivalent embodiments of the present invention. Furthermore, any changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention shall still fall within the protection scope of the present invention.

[0092] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0093] Experimental methods not specified in this invention are generally performed under conventional conditions or as recommended by the manufacturer.

[0094] Unless otherwise stated, the various optimized technical solutions in this invention can be combined with each other.

[0095] Unless otherwise stated, percentages and parts are weight percentages and weight parts.

[0096] Experimental methods not specified in the instructions and examples are generally performed under standard conditions or as recommended by the manufacturer.

[0097] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as are familiar to those skilled in the art. Furthermore, any methods and materials similar to or equivalent to those described herein may be used in the methods of this invention.

Claims

1. An antistatic three-dimensional decorative art coating, characterized in that: It comprises the following components in parts by weight: 10-40 parts conductive pearl powder, 1-10 parts conductive titanium dioxide, 15-35 parts emulsion, 10-50 parts water; The weight ratio of the conductive pearlescent powder to the conductive titanium dioxide is 15:1 to 5:

1. The conductive pearlescent powder is mica coated with one or more layers of semiconductor metal oxide; The conductive titanium dioxide is titanium dioxide coated with one or more layers of semiconductor metal oxide; The glass transition temperature of the emulsion is ≥15℃; The content of the conductive pearlescent powder and conductive titanium dioxide is 18~25wt% of the total weight.

2. The antistatic three-dimensional decorative art coating according to claim 1, characterized in that: The conductive pearlescent powder has a particle size of 10~200μm; and / or The conductive titanium dioxide has a particle size of 0.1~0.5μm.

3. The antistatic three-dimensional decorative art coating according to claim 1, characterized in that: The conductive pearlescent powder is composed of conductive pearlescent powders of different particle sizes.

4. The antistatic three-dimensional decorative art coating according to claim 1, characterized in that: The semiconductor metal oxide is tin dioxide doped with metal elements.

5. The antistatic three-dimensional decorative art coating according to claim 1, characterized in that: It also includes one or more of the following ingredients in parts by weight: Thickener 0.1~10 parts; pH adjuster 0.01~5 parts; 0.1 to 5 parts of wetting and dispersing agent; Defoamer 0.1-5 parts; Leveling agent 0-1 part; Film-forming aid 0.1-5 parts; Preservative: 0.1-0.8 parts; 0.1 to 0.8 parts of antifungal agent; Antifreeze 0.1 to 1 part.

6. The antistatic three-dimensional decorative art coating according to claim 5, characterized in that: It includes one or more of the following features: The emulsion is a pure acrylic emulsion; The thickener is one or a combination of several of the following: cellulose thickener, polyurethane thickener, and alkali-swellable thickener; The pH adjuster is an organic alcohol amine; The wetting and dispersing agent is one or a combination of several of the following: nonionic polymeric alkyl ethers, nonionic polymeric alkyl esters, and nonionic polymeric alkyl alcohols. The defoamer is one or a combination of several of the following: silicone defoamers and mineral oil defoamers; The film-forming aid is one or a combination of several alcohol esters and ethers.

7. A method for preparing an antistatic three-dimensional decorative art coating as described in claim 1 or 5, characterized in that: It includes a first mixture and a second mixture; The first mixture comprises the following components in parts by weight: 10-40 parts conductive pearlescent powder, 1-10 parts conductive titanium dioxide, 10-50 parts water; The second mixture comprises the following components in parts by weight: 15-35 parts emulsion; It includes the following preparation steps: The first mixture and the second mixture are mixed under stirring conditions to prepare the antistatic three-dimensional decorative art coating.

8. A coating, characterized in that: It is obtained by coating a substrate with the antistatic three-dimensional decorative art coating as described in claim 1.

9. An article, characterized in that: It includes: The substrate, the coating of claim 8, and the primer applied to the surface of the substrate.

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