Coating composition, coating method for highlighting wood grain, and coated wood

Abstract

The embodiment of the invention relates to the technical field of coating, and discloses a coating composition, a coating method for highlighting wood grains and coated wood. According to the coating composition and the coating method, an effective solution is provided for solving the problems that in the prior art, wood grains are not obvious in appearance, and coatings are high in covering power and prone to discoloration. The shellac or the shellac-based derivative material is selected as the film-forming agent, and the appropriate volatile carrier solution is matched, so that a paint film formed by the coating on the wood surface is transparent and durable, and the service life of the wood surface is prolonged. By means of the detailed coating step, it is ensured that the coating evenly covers the surface of the wood and penetrates into micropores of the wood, the wood texture is more distinct, and the phenomenon that in a traditional technology, the wood grain is fuzzy due to coating accumulation or uneven permeation is avoided. In conclusion, according to the coating composition and the coating method, the ideal effects of attractiveness and practicability are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of coating, in particular to a coating composition, a coating method for highlighting wood grains and coated wood. Background Art

[0002] With the continuous advancement of urbanization, the increasingly artificial living environment makes people feel monotonous and boring. This environment inspires people's deep pursuit of the natural state, especially in the field of furniture and interior decoration. People are increasingly inclined to choose products that can maintain the natural texture and color of wood to create a harmonious and relaxing living space.

[0003] However, in existing coatings and finishing technologies, a paint film is often applied on the wood surface to strengthen the wood surface texture. However, due to the limitations of the coating itself and the shortcomings of the finishing method, the performance of the wood grain is not satisfactory.

[0004] From the perspective of the paint itself, some common paints may have high hiding power, which is good for protecting the wood, but it can also easily cover up the natural texture of the wood, making the original beauty of the wood not fully displayed. In addition, some paints may change color or lose their luster over time, further affecting the appearance of the wood.

[0005] In terms of finishing methods, traditional finishing processes fail to fully take into account the characteristics and texture of wood. During the finishing process, if the paint fails to evenly penetrate the pores of the wood or the paint accumulates on the surface of the wood, even clear paint may not be able to highlight the natural texture of the wood well.

[0006] In order to improve this situation, it is necessary to start from two aspects: optimizing the coating formula and improving the coating process, so as to better highlight the natural texture of the wood and achieve an ideal effect that is both beautiful and practical. Summary of the invention

[0007] The purpose of this application is to provide a more transparent and durable coating to ensure that they can provide adequate protection without changing the natural color of the wood; in addition, a coating method for the above coating is provided to ensure that the coating can evenly cover the surface of the wood and penetrate into the tiny pores of the wood.

[0008] A finishing composition comprising:

[0009] A resin-type solid film-forming agent, wherein the resin-type solid film-forming agent is shellac or a shellac-based derivative material;

[0010] A volatile carrier solution, wherein the volatile carrier solution is used to dissolve the resin-type solid film-forming agent, and the volatile carrier solution is ethanol;

[0011] A coloring medium, which may be selected from but not limited to natural mineral color sources, plant-extracted pigments or synthetic colorants;

[0012] an adhesion promoter, wherein the adhesion promoter is selected from but not limited to phenolic compounds;

[0013] A fluidity regulator, wherein the fluidity regulator is selected from but not limited to a plant oil derivative or a mineral oil derivative;

[0014] The coating composition is prepared into different types of coating compositions according to different ratios of the resin-type solid film-forming agent and the volatile carrier solution.

[0015] Furthermore, the coloring medium selects different types of colorants to match the desired wood grain color of the wood.

[0016] Furthermore, the coating composition also contains an anti-reflection component, which is selected from but not limited to one or more of polyacrylates, silicone or fluorocarbon compounds, modified urethanes, optically transparent varnishes, nano-scale silica or alumina particles, non-ionic surfactants, polyether-modified siloxanes and ultraviolet absorbers.

[0017] A finishing method for highlighting wood grain, which is implemented based on the above-mentioned finishing composition, comprises the following steps:

[0018] Step 1: Smooth the wood surface to obtain a smooth coating;

[0019] Step 2: applying a finishing composition on the planarized coating to obtain a finishing base layer, and sanding the finishing base layer with No. 0 wood sandpaper;

[0020] Step 3: using the second type of coating composition to perform water color suppression treatment on the coating base layer to obtain a color control coating;

[0021] Step 4: Apply oil-aged powder on the color-control coating to obtain a deep coating;

[0022] Step 5: Using three types of finishing compositions to perform strengthening treatment on the deep coating to obtain a texture strengthening layer;

[0023] Step 6: coating the second coating composition on the texture strengthening layer to obtain a transparent layer;

[0024] Step 7: Apply a color-blocking treatment to the translucent layer to obtain a texture-highlighting coating.

[0025] Furthermore, the planarization process specifically includes the following steps:

[0026] Step 11: Sand and plan the white wood to remove the loose powder; No. wood sandpaper;

[0027] Step 12: using a type of finishing composition to finish the white wood after fine polishing;

[0028] Step 13: After the first type of finishing composition is dried, applying shellac putty;

[0029] Step 14: Sand the wood from step 13 using No. 1 wood sandpaper.

[0030] Furthermore, the ratio of the resin-type solid film-forming agent to the volatile carrier solution in the coating composition is 1:7 to 1:8;

[0031] The ratio of the resin-type solid film-forming agent to the volatile carrier solution in the second type of coating composition is 1:4;

[0032] The ratio of the resin-type solid film-forming agent to the volatile carrier solution in the three types of coating compositions is 1:6.

[0033] Furthermore, the shellac putty comprises a volatile carrier solution, old powder and a colorant, and the ratio of the volatile carrier solution to the old powder is 6:1.

[0034] Furthermore, the oil-based powder ingredients include perfume, various thick lacquers and pigments.

[0035] Further, the color matching process includes:

[0036] Step 71: using the three types of finishing compositions to repair the uneven color of the deep coating;

[0037] Step 72: Sand the wood obtained in step 71 with No. 0 wood sandpaper;

[0038] Step 73: Apply a topcoat to the wood obtained in step 72, wherein the topcoat is selected from phenolic varnish / nitro varnish / polyurethane varnish.

[0039] A wood with prominent wood grains, which is obtained by using the above-mentioned coating method, and the wood is preferably wood with large duct grooves.

[0040] Compared with the related art, the coating composition and coating method proposed in the present invention provide an effective solution to the problems existing in the prior art that wood grain is not obvious, the coating has strong covering power and is easy to change color.

[0041] First, by adding an anti-transmitting component to the coating, the transparency of the coating is significantly improved, so that the natural texture of the wood can be clearly presented, avoiding the problem that traditional coatings cover up the natural beauty of the wood due to their strong covering power. Secondly, shellac or shellac-based derivatives are selected as film-forming agents, and are matched with a suitable volatile carrier solution to ensure that the paint film formed on the wood surface is both transparent and durable, extending the service life of the wood surface. In addition, through detailed finishing steps, it is ensured that the coating evenly covers the wood surface and penetrates into the fine pores of the wood, making the wood texture more distinct, avoiding the blurred wood grain caused by uneven accumulation or penetration of the coating in traditional processes. Using a specific proportion of the finishing composition and through color matching, the problem of uneven color on the wood surface is solved, making the wood color more uniform and natural, and the overall effect is beautiful and harmonious. Finally, the finishing method provided by the present invention has clear steps, is easy to operate, improves finishing efficiency, and reduces construction difficulty.

[0042] In summary, the coating composition and coating method of the present invention not only effectively solve the problem of unclear wood grain, but also greatly improve the aesthetics and durability of wood, achieving an ideal effect of both beauty and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Flow chart of the coating method of the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] Embodiment 1: This embodiment provides a finishing composition, comprising:

[0046] Resin-type solid film-forming agent, resin-type solid film-forming agent is shellac or shellac-based derivative materials; shellac or shellac-based derivative materials have excellent transparency and good adhesion, can form a strong protective layer, and will not cover the natural texture of the wood.

[0047] A volatile carrier solution is used to dissolve the resin-type solid film-forming agent, and the volatile carrier solution is ethanol; ethanol not only helps the paint to dry quickly, but also ensures that the paint is evenly distributed on the wood surface.

[0048] Coloring medium, the coloring medium can be selected from but not limited to natural mineral color sources, plant-extracted pigments or synthetic colorants; the coloring medium selects different types of colorants to match the desired wood grain color of the wood, ensuring that the final color is coordinated and unified with the texture of the wood itself.

[0049] Adhesion promoter, which is selected from but not limited to phenolic compounds, is used to enhance the adhesion between the coating and the wood to ensure the firmness of the paint film.

[0050] The fluidity regulator is selected from but not limited to plant oil derivatives or mineral oil derivatives; it is used to adjust the fluidity and coating properties of the coating so that the coating is easy to apply and can evenly cover the wood surface.

[0051] The coating composition further comprises an anti-transmitting component, which is selected from but not limited to one or more of polyacrylate, silicone or fluorocarbon compounds, modified urethane, optically transparent varnish, nano-sized silica or alumina particles, nonionic surfactant, polyether-modified siloxane and ultraviolet absorber. These components can not only increase the transparency of the coating, but also improve the optical properties of the coating, so that the natural texture of the wood is more clearly displayed.

[0052] Through the careful proportioning of the above ingredients, the coating composition can significantly improve the clarity of the wood texture without changing the natural color of the wood. The anti-transparency component in the coating preserves the natural texture of the wood while enhancing the protective performance of the wood surface. In addition, the transparency and durability of the coating are also guaranteed, which improves the aesthetics and service life of the wood.

[0053] Specifically, different types of coating compositions can be prepared by mixing resin-type solid film-forming agents and volatile carrier solutions in different ratios. The mixture of resin-type solid film-forming agents and volatile carrier solutions is used as the base material, and the mixing ratio of the base material, adhesion promoter, fluidity regulator and anti-transparency component in the coating composition is 87:5:5:3. By rationally adjusting the proportions of the various components, the clarity of the wood texture can be significantly improved without changing the natural color of the wood.

[0054] When the resin-based solid film former and the volatile carrier solution are mixed in different ratios of 1:7 to 1:8 in the substrate, the coating composition is called a type of coating composition; this means that each film former corresponds to a larger amount of volatile carrier solution. This type of composition is mainly used for primary coating to provide a preliminary protective layer for the wood surface. Due to the high content of volatile carrier solution and the low content of film former, the coating has good fluidity, is easy to apply and dries quickly. In addition, the higher proportion of volatile carrier solution allows the coating to better penetrate the wood surface, fill the tiny pores on the wood surface, and lay a good foundation for the subsequent coating steps. It is suitable for initial coating base treatment, providing good fluidity and fast drying characteristics.

[0055] When the resin-type solid film former and the volatile carrier solution in the substrate are mixed in a ratio of 1:4 according to different proportions, the coating composition is called a Class II coating composition; this means that each film former corresponds to a smaller amount of volatile carrier solution. This type of composition is mainly used for water color suppression treatment and translucent layer treatment. Due to the relatively high content of film former, the coating has a stronger hiding power and can effectively suppress the color unevenness on the wood surface. At the same time, the higher content of film former also makes the coating have better adhesion and transparency, which can better show the natural texture of the wood. Suitable for water color suppression treatment and translucent layer treatment, with strong hiding power and transparency.

[0056] When the resin-type solid film former and the volatile carrier solution are mixed in different ratios of 1:6 in the substrate, the coating composition is called a Class III coating composition. This means that each film former corresponds to a moderate amount of volatile carrier solution. This type of composition is mainly used for texture enhancement. Due to the moderate content of film former and the moderate content of volatile carrier solution, the coating has both good fluidity and strong hiding power. Such a ratio can strengthen the wood texture while maintaining good adhesion and transparency of the coating, making the wood texture more distinct. Suitable for texture enhancement treatment, maintaining good adhesion and transparency, making the wood texture more distinct.

[0057] Embodiment 2, as Figure 1 As shown, this embodiment provides a coating method for highlighting wood grain based on the coating composition provided in Example 1, comprising the following steps:

[0058] Step 1: Smooth the wood surface to obtain a smooth coating.

[0059] Step 2: applying a finishing composition on the planarized coating to obtain a finishing base layer, and sanding the finishing base layer with No. 0 wood sandpaper.

[0060] Step 3: Use the second type of finishing composition to perform water color suppression treatment on the finishing base to obtain a color control coating; use a cotton ball dipped in shellac varnish to wipe the second type of finishing composition and dry it for 7 to 14 minutes. This can reduce the amount of water color absorbed by the wood. Otherwise, if the wood absorbs too much water color, not only will the color on the wooden article be too dark, but the color will also be difficult to be uniform.

[0061] Step 4: Apply oil-aging powder over the color-control coating to get a deep coating.

[0062] Step 5: Use three types of finishing compositions to perform strengthening treatment on the deep coating to obtain a texture strengthening layer.

[0063] Step 6: Apply the second coating composition on the texture enhancement layer to obtain a transparent layer.

[0064] Step 7: Apply a color-blocking treatment to the translucent layer to obtain a texture-highlighting coating.

[0065] The coating method provided by the present invention effectively solves the problems in the prior art that the wood grain is not obvious, the coating has strong covering power and is easy to change color through a series of meticulous steps. First, the wood surface is smoothed by flattening treatment, laying the foundation for subsequent coating. Then, different types of coating compositions are used for multiple coatings and treatments, and the coating is gradually constructed to ensure that the coating is evenly covered and penetrates into the pores of the wood, thereby enhancing the texture. Applying oil powder and strengthening treatment makes the wood texture more distinct, and finally a uniform and natural color is obtained through color matching treatment, making the wood surface beautiful and durable. The overall method has clear steps, is easy to operate, and improves the efficiency and effect of coating.

[0066] The flattening process specifically includes the following steps:

[0067] Step 11: Sand and plan the white wood to remove the loose powder; No. 1 wood sandpaper, this sandpaper has a moderate particle size and is suitable for removing the rough parts of the wood surface without leaving obvious scratches. During the sanding process, it is necessary to maintain a certain force to ensure that every part of the wood surface is evenly sanded and avoid local over- or under-sanding. At the same time, sand along the direction of the wood grain to prevent damage to the natural texture of the wood. Fine planing further eliminates any unevenness on the wood surface and ensures that the wood surface is as flat and smooth as possible. Use a precision planer to operate, and pay attention to controlling the angle and pressure of the tool to ensure that the wood surface is both flat and does not damage the texture of the wood itself. Remove floating powder Use a clean and soft cloth or a special dust removal tool to remove the remaining floating powder and debris on the wood surface. You can also use an air gun to blow gently to ensure that the wood surface is clean and dust-free. After removing the floating powder, check the wood surface again with a clean cotton cloth or a soft brush to ensure that there is no residue, creating a clean and tidy surface for the subsequent finishing steps. This step ensures that the wood surface is flat, clean and smooth, laying a solid foundation for subsequent finishing work, thereby ensuring the beauty and durability of the final finishing effect.

[0068] Step 12: Use a type of finishing composition to finish the white blank wood after fine polishing; this step is to use a non-shedding, flexible brush to manually apply the paint, apply the paint evenly, the length of each stroke should be consistent, and the amount of paint should be even and appropriate, not too much or too little. When brushing, brush along the direction of the wood grain, not back and forth. Otherwise, wrinkles are likely to appear. When brushing, if brush hair is found in the coating, it should be immediately picked out with a brush corner or a needle. If the coating volume is of industrial scale, automatic paste equipment can be introduced for brushing or spraying to improve the efficiency and quality of the coating.

[0069] Step 13: After the first type of coating composition is dry, apply shellac putty; the drying process after painting takes 7-15 minutes to ensure that the paint is fully penetrated and cured, creating conditions for the next step of processing, and use shellac putty to fill small defects or unevenness on the wood surface. Shellac putty includes volatile carrier solution, old powder and colorant, and the ratio of volatile carrier solution to old powder is 6:1; the shellac putty is manually filled with a foot knife, and the surface of the putty should be slightly higher than the surrounding area. After drying and shrinking, it can be sanded flat with sandpaper.

[0070] Step 14: Sand the wood from step 13 using No. 1 wood sandpaper. This sandpaper type is finer than the sandpaper used in step 11 and can further improve the smoothness of the wood surface and create better conditions for subsequent steps. During the sanding process, you should also operate along the direction of the wood grain to ensure that the wood surface is smooth and free of marks.

[0071] Furthermore, the ingredients of the oil-aging powder are perfume, various thick paints and pigments. Specifically, red thick paint and iron red are added to the oil-aging powder of red wood grain, green thick paint is added to the oil-aging powder of green wood grain, Haba powder or red thick paint and black thick paint are added to the oil-aging powder of coffee wood grain, and yellow thick paint and red thick paint are added to the oil-aging powder of orange wood grain. The oil-aging powder is manually rubbed with bamboo flowers and dried for 8-12 hours.

[0072] The color matching process in step 7 includes the following steps:

[0073] Step 71: Use the three types of finishing compositions to repair the uneven color of the coating; use a brush and a large and small calligraphy brush to manually repair. In order to make the color consistent, it should be repaired from light to dark one by one, and it should not be rushed. After the completion, dry for 7-15 minutes to ensure that the repaired color is fixed, which is convenient for the operation of the subsequent steps.

[0074] Step 72: Sand the wood from step 71 with No. 0 wood sandpaper; this sandpaper has a very fine grit and is suitable for final finishing.

[0075] Step 73: Apply topcoat to the wood obtained in step 72. The topcoat may be phenolic varnish, nitro varnish or polyurethane varnish. Use a pig hair paint brush to apply the topcoat. The action should be gentle. The drying time after the application is 12-24 hours.

[0076] In summary, the coating method provided by the present invention uses a series of detailed steps and selects different types of coating compositions at different stages, which effectively solves the problems in the prior art that the wood grain is not obvious, the coating has strong covering power and is easy to change color.

[0077] In Example 3, the wood coated by the coating method provided in Example 2 is preferably wood with large duct grooves, because the wood with large duct grooves can better show its natural texture and is more likely to absorb paint during the coating process, making the texture of the wood surface more distinct.

[0078] Specifically, wood with large duct grooves (such as oak, pine, etc.) has a natural texture beauty due to its larger pores. These larger pores not only make the wood surface more layered, but also better absorb the paint during the finishing process, allowing the paint to penetrate deep into the wood and form a more uniform coating. This not only enhances the aesthetics of the wood surface, but also improves the durability and protective performance of the coating.

[0079] In particular, not all woods are of the large duct groove type. For woods with small duct grooves (such as cherry wood, maple, etc.), the duct grooves can be enlarged by heating, so as to better adapt to the above-mentioned finishing method.

[0080] That is to say, before the wood of the small duct groove is painted, it needs to be pre-treated by heating.

[0081] Heat pretreatment requires placing the wood in a controlled temperature environment, setting the temperature between 60°C and 80°C for about 1 to 2 hours. This temperature range can effectively activate the moisture molecules inside the wood and cause the wood fibers to expand slightly.

[0082] During the heating process, keep the ambient humidity between 40% and 60%. Moderate humidity helps prevent the wood from being too dry and causing cracks.

[0083] It should be noted that the temperature control environment should be heated evenly to ensure that all parts of the wood are heated evenly. Fans or other air circulation devices can be used to help evenly distribute the heat to avoid overheating of a certain part of the wood and causing local deformation or damage.

[0084] After the above steps, place the wood in a well-ventilated place to cool naturally. The cooling time depends on the thickness of the wood and the ambient temperature, and generally takes several hours. During the cooling period, keep the ambient humidity at around 50% to help the moisture inside the wood reach a new equilibrium state and prevent the wood from warping or cracking during the cooling process.

[0085] The heating scheme described above can expand the duct grooves, allowing them to better absorb paint and show the natural texture of the wood. The heated cherry wood can show the clear and beautiful texture of the large duct groove wood, and the paint can better penetrate the wood during the finishing process, achieving a beautiful and harmonious effect.

[0086] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily mention changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims, and the above embodiments should be regarded as exemplary and non-restrictive.

Claims

1. A coating composition, characterized in that Include: A resin-type solid film-forming agent, wherein the resin-type solid film-forming agent is shellac or a shellac-based derivative material; A volatile carrier solution, wherein the volatile carrier solution is used to dissolve the resin-type solid film-forming agent, and the volatile carrier solution is ethanol; A coloring medium, which may be selected from but not limited to natural mineral color sources, plant-extracted pigments or synthetic colorants; an adhesion promoter, wherein the adhesion promoter is selected from but not limited to phenolic compounds; A fluidity regulator, wherein the fluidity regulator is selected from but not limited to a plant oil derivative or a mineral oil derivative; The coating composition is prepared into different types of coating compositions according to different ratios of the resin-type solid film-forming agent and the volatile carrier solution.

2. A finishing composition according to claim 1, characterized in that: The coloring medium selects different types of colorants to match the desired wood grain color of the wood.

3. A finishing composition according to claim 2, characterized in that: The coating composition further comprises an anti-reflection component, which is selected from but not limited to one or more of polyacrylates, silicone or fluorocarbon compounds, modified urethanes, optically transparent varnishes, nano-scale silica or alumina particles, non-ionic surfactants, polyether-modified siloxanes and ultraviolet absorbers.

4. A finishing method for highlighting wood grain, the finishing method comprising applying the finishing composition of any one of claims 2 to 3 to wood, characterized in that: The following steps are involved: Step 1: Smooth the wood surface to obtain a smooth coating; Step 2: applying a finishing composition on the planarized coating to obtain a finishing base layer, and sanding the finishing base layer with No. 0 wood sandpaper; Step 3: using the second type of coating composition to perform water color suppression treatment on the coating base layer to obtain a color control coating; Step 4: Apply oil-aged powder on the color-control coating to obtain a deep coating; Step 5: Using three types of finishing compositions to perform strengthening treatment on the deep coating to obtain a texture strengthening layer; Step 6: coating the second coating composition on the texture strengthening layer to obtain a transparent layer; Step 7: Apply a color-blocking treatment to the translucent layer to obtain a texture-highlighting coating.

5. A method for highlighting wood grain according to claim 4, characterized in that: The flattening process specifically comprises the following steps: Step 11: Sand and plan the white wood to remove the loose powder; No. wood sandpaper; Step 12: using a type of finishing composition to finish the white wood after fine polishing; Step 13: After the first type of finishing composition is dried, applying shellac putty; Step 14: Sand the wood from step 13 using No. 1 wood sandpaper.

6. A method for highlighting wood grain according to claim 5, characterized in that: The ratio of the resin-type solid film-forming agent to the volatile carrier solution in the coating composition is 1:7 to 1:8; The ratio of the resin-type solid film-forming agent to the volatile carrier solution in the second type of coating composition is 1:4; The ratio of the resin-type solid film-forming agent to the volatile carrier solution in the three types of coating compositions is 1:

6.

7. A coating method for highlighting wood grain according to claim 6, characterized in that: The shellac putty comprises a volatile carrier solution, old powder and a colorant, and the ratio of the volatile carrier solution to the old powder is 6:

1.

8. A method for highlighting wood grain according to claim 7, characterized in that: The ingredients of the oil old powder are perfume, various thick paints and pigments.

9. A coating method for highlighting wood grain according to claim 8, characterized in that: The color matching process includes: Step 71: using the three types of finishing compositions to repair the uneven color of the deep coating; Step 72: Sand the wood obtained in step 71 with No. 0 wood sandpaper; Step 73: Apply a topcoat to the wood obtained in step 72, wherein the topcoat is selected from phenolic varnish / nitro varnish / polyurethane varnish.

10. Wood finished by the finishing method according to claim 9, characterized in that The wood is preferably wood with large conduit grooves.

Images