A matt wood lacquer and a method for producing the same

Abstract

The present application relates to the technical field of wood paint, and particularly relates to a matte wood paint and a preparation method thereof, which comprises the following raw materials in parts by weight: 30-35 parts of water-based polyurethane acrylate resin, 20-25 parts of water-based epoxy acrylate resin, 40-45 parts of functional monomer, 7-11 parts of combined functional agent, 3-6 parts of silane coupling agent, 4-7 parts of photoinitiator, 5-8 parts of modified fumed silica agent and 45-50 parts of solvent. The matte wood paint is prepared by mixing the water-based polyurethane acrylate resin, the water-based epoxy acrylate resin and the functional monomer with the silane coupling agent and the photoinitiator, and the combined functional agent and the modified fumed silica agent are added at the same time to be mutually mixed and matched, and to be optimized together, so that the matte effect, the hardness and the impact resistance of the obtained matte wood paint can be balanced and improved, and the water resistance and the cold and hot resistance of the product are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of wood coating technology, specifically to a matte wood coating and its preparation method. Background Technology

[0002] In the modern home decoration and woodworking industry, people are increasingly demanding higher performance and decorative effects from wood coatings. Matte wood coatings, with their soft sheen and understated texture, can create a warm, comfortable, and high-quality spatial atmosphere, and are increasingly favored by consumers.

[0003] Existing wood coatings aim to improve the matte finish of products, but this often reduces the product's hardness and impact resistance, making it difficult to achieve a balanced improvement in product performance. Furthermore, the poor water resistance and thermal stability limit the product's usability. Therefore, this invention provides further improvements to the coatings. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the purpose of this invention is to provide a matte wood coating and its preparation method to solve the problems mentioned in the background art.

[0005] The present invention solves the technical problem by adopting the following technical solution: This invention provides a matte wood coating, comprising the following raw materials in parts by weight: The composition includes 30-35 parts of waterborne polyurethane acrylate resin, 20-25 parts of waterborne epoxy acrylate resin, 40-45 parts of functional monomer, 7-11 parts of combined functional agent, 3-6 parts of silane coupling agent, 4-7 parts of photoinitiator, 5-8 parts of modified fumed silica agent, and 45-50 parts of solvent.

[0006] Preferably, the matte wood varnish comprises the following raw materials in parts by weight: The composition includes 32.5 parts of waterborne polyurethane acrylate resin, 22.5 parts of waterborne epoxy acrylate resin, 42.5 parts of functional monomer, 9 parts of combined functional agent, 4.5 parts of silane coupling agent, 5.5 parts of photoinitiator, 6.5 parts of modified fumed silica agent, and 47.5 parts of solvent.

[0007] Preferably, the waterborne polyurethane acrylate resin has a double bond content of 3.5 MEQ / g; the waterborne epoxy acrylate resin has a double bond content of 3.0 MEQ / g; and the functional monomers are prepared by mixing pentaerythritol hexaacrylate, pentaerythritol triacrylate, and 2-methaneoxyethyl acrylate in a weight ratio of 3:3:2. The photoinitiator is prepared by mixing photoinitiator TPO and photoinitiator ITX in a weight ratio of 1:1. The silane coupling agent is silane coupling agent KH560; The solvent is ethanol.

[0008] Preferably, the preparation method of the combined functional agent is as follows: S01: Add 3-5 parts by weight of carboxymethyl cellulose and 2-3 parts by weight of cerium oxide to 5-8 parts by weight of sodium lignosulfonate solution and mix thoroughly to obtain carboxymethyl cellulose solution; S02: Add 2-4 parts by weight of titanium dioxide and 3-5 parts by weight of flaky talc powder to 4-7 parts by weight of sodium silicate solution and stir evenly to obtain a mixed solution; The blending solution and carboxymethyl cellulose solution were ultrasonically treated at a weight ratio of 5:8. After ultrasonic treatment, a combined solution based on carboxymethyl cellulose was obtained. S03: Preparation of functional improvers: S03a: Heat-treat nano-attapulgite at 210~220℃ for 10min, then cool it down to 55℃ at a rate of 2~5℃ / min and keep it at that temperature to obtain heat-insulated nano-attapulgite. S03b: Sodium alginate powder is first stirred evenly in a sufficient amount of 5% potassium permanganate solution, then washed with water, filtered and dried to obtain dry sodium alginate powder; 3-5 parts of dry sodium alginate powder, 2-4 parts of nano calcium carbonate and 4-6 parts of 4% lanthanum chloride solution are mixed evenly according to the weight to obtain sodium alginate agent. S03c: 4-6 parts by weight of heat-insulating nano-attapulgite clay and 3-5 parts by weight of sodium alginate are mixed and ball-milled at a speed of 1000 r / min for 2 hours. After ball milling, the mixture is filtered and dried to obtain the functional improver. S04: The combined liquid based on carboxymethyl cellulose and the functional improver were ball-milled at a weight ratio of (5~7):4 at a speed of 1500 r / min for 1 h. After ball milling, the mixture was filtered and dried to obtain the combined functional agent.

[0009] Preferably, the sodium lignosulfonate solution has a mass fraction of 5-8%; and the sodium silicate solution has a mass fraction of 3-5%.

[0010] Preferably, in S02, the ultrasonic power of the ultrasonic treatment is 350~400W, and the ultrasonic treatment lasts for 1 hour.

[0011] Preferably, the specific modification method of the modified fumed silica agent is as follows: S11: Place the fumed silica in a proton irradiation chamber of 350~400W for 1 hour. After irradiation, preheat it at 55~60℃ for 1 hour to obtain preheated fumed silica. S12: The preheated fumed silica and the modified liquid are stirred and modified at a weight ratio of 5:7. The stirring speed is 450~550r / min, and the stirring is carried out for 35min. After stirring, the mixture is filtered and dried to obtain the modified fumed silica agent.

[0012] Preferably, the modified liquid comprises the following raw materials in parts by weight: 2-5 parts diatomaceous earth, 1-3 parts silicon carbide, 3-5 parts yttrium nitrate solution, 2-4 parts sodium dodecylbenzenesulfonate solution, and 1-2 parts β-cyclodextrin.

[0013] Preferably, the yttrium nitrate solution has a mass fraction of 2-5%; and the sodium dodecylbenzenesulfonate solution has a mass fraction of 5-8%.

[0014] This invention also provides a method for preparing matte wood varnish, comprising the following steps: Weigh the raw materials for the matte wood coating according to the specified weight, mix the raw materials thoroughly to obtain a liquid matte wood coating; spray the liquid matte wood coating onto the substrate with a coating thickness of 0.2~0.3mm, dry at 40~45℃ for 12h, and finally cure under ultraviolet light with a curing energy of 100~200mj for 1h to obtain a solid layered matte wood coating.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The matte wood coating of the present invention is made by blending waterborne polyurethane acrylate resin, waterborne epoxy acrylate resin and functional monomers with silane coupling agent and photoinitiator. At the same time, the added co-functional agent and modified fumed silica agent are blended and optimized together. The resulting matte wood coating can achieve a balanced improvement in matte effect, hardness and impact resistance. At the same time, the product has significant water resistance and cold and heat stability. 2. The combined functional agent utilizes a carboxymethyl cellulose (CMC)-based combined liquid and functional modifiers, combined with ball milling for improvement. The CMC-based combined liquid is optimized through ultrasonic improvement using a blending liquid and a CMC liquid. The CMC liquid is blended with a solution of CMC, cerium oxide, and sodium lignosulfonate, and then combined with a blending liquid made of titanium dioxide, flake talc, and sodium silicate. Through the synergistic effect of the blending liquid and the CMC liquid, the resulting CMC-based combined liquid can enhance the matte effect in the system and can improve the system's... The performance coordination is better utilized. At the same time, the functional improver uses nano-attapulgite clay, which is heat-treated at 210~220℃ for 10min and then cooled to 55℃ at a rate of 2~5℃ / min. The activity of nano-attapulgite clay is optimized through thermal improvement. It is then combined with sodium alginate agent to harmonize the effect. The sodium alginate powder in the sodium alginate agent is activated by potassium permanganate oxidation and then blended and coordinated with nano-calcium carbonate and 4% lanthanum chloride solution. Through the adjustment of the combination of raw materials, the performance coordination and performance stability of the system are further optimized. 3. Modified fumed silica agent: The modified fumed silica agent is subjected to proton irradiation treatment and then preheating to activate the activity of fumed silica. At the same time, it is improved and optimized with a modifying liquid. The modifying liquid uses diatomaceous earth as the matrix and is mixed with silicon carbide raw materials. The added yttrium nitrate solution, sodium dodecylbenzene sulfonate solution and β-cyclodextrin work together to regulate the effect. By modifying fumed silica with a specific modifying liquid, the modified fumed silica agent and the combined functional agent have a better synergistic effect, thereby further improving the performance coordination and stability of the product. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to specific examples. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] This embodiment of a matte wood coating comprises the following raw materials in parts by weight: The composition includes 30-35 parts of waterborne polyurethane acrylate resin, 20-25 parts of waterborne epoxy acrylate resin, 40-45 parts of functional monomer, 7-11 parts of combined functional agent, 3-6 parts of silane coupling agent, 4-7 parts of photoinitiator, 5-8 parts of modified fumed silica agent, and 45-50 parts of solvent.

[0018] In this embodiment, the double bond content of the waterborne polyurethane acrylate resin is 3.5 MEQ / g; the double bond content of the waterborne epoxy acrylate resin is 3.0 MEQ / g; the functional monomers are prepared by dipentaerythritol hexaacrylate, pentaerythritol triacrylate, and 2-methaneoxyethyl acrylate in a weight ratio of 3:3:2; the photoinitiator is prepared by photoinitiator TPO and photoinitiator ITX in a weight ratio of 1:1; the silane coupling agent is silane coupling agent KH560; and the solvent is ethanol.

[0019] The preparation method of the combined functional agent in this embodiment is as follows: S01: Add 3-5 parts by weight of carboxymethyl cellulose and 2-3 parts by weight of cerium oxide to 5-8 parts by weight of sodium lignosulfonate solution and mix thoroughly to obtain carboxymethyl cellulose solution; S02: Add 2-4 parts by weight of titanium dioxide and 3-5 parts by weight of flaky talc powder to 4-7 parts by weight of sodium silicate solution and stir evenly to obtain a mixed solution; The blending solution and carboxymethyl cellulose solution were ultrasonically treated at a weight ratio of 5:8. After ultrasonic treatment, a combined solution based on carboxymethyl cellulose was obtained. S03: Preparation of functional improvers: S03a: Heat-treat nano-attapulgite at 210~220℃ for 10min, then cool it down to 55℃ at a rate of 2~5℃ / min and keep it at that temperature to obtain heat-insulated nano-attapulgite. S03b: Sodium alginate powder is first stirred evenly in a sufficient amount of 5% potassium permanganate solution, then washed with water, filtered and dried to obtain dry sodium alginate powder; 3-5 parts of dry sodium alginate powder, 2-4 parts of nano calcium carbonate and 4-6 parts of 4% lanthanum chloride solution are mixed evenly according to the weight to obtain sodium alginate agent. S03c: 4-6 parts by weight of heat-insulating nano-attapulgite clay and 3-5 parts by weight of sodium alginate are mixed and ball-milled at a speed of 1000 r / min for 2 hours. After ball milling, the mixture is filtered and dried to obtain the functional improver. S04: The combined liquid based on carboxymethyl cellulose and the functional improver were ball-milled at a weight ratio of (5~7):4 at a speed of 1500 r / min for 1 h. After ball milling, the mixture was filtered and dried to obtain the combined functional agent.

[0020] In this embodiment, the sodium lignosulfonate solution has a mass fraction of 5-8%; the sodium silicate solution has a mass fraction of 3-5%.

[0021] In this embodiment, the ultrasonic power of the ultrasonic treatment in S02 is 350~400W, and the ultrasonic treatment lasts for 1 hour.

[0022] The specific modification method of the modified fumed silica agent in this embodiment is as follows: S11: Place the fumed silica in a proton irradiation chamber of 350~400W for 1 hour. After irradiation, preheat it at 55~60℃ for 1 hour to obtain preheated fumed silica. S12: The preheated fumed silica and the modified liquid are stirred and modified at a weight ratio of 5:7. The stirring speed is 450~550r / min, and the stirring is carried out for 35min. After stirring, the mixture is filtered and dried to obtain the modified fumed silica agent.

[0023] The modified liquid in this embodiment comprises the following raw materials in parts by weight: 2-5 parts diatomaceous earth, 1-3 parts silicon carbide, 3-5 parts yttrium nitrate solution, 2-4 parts sodium dodecylbenzenesulfonate solution, and 1-2 parts β-cyclodextrin.

[0024] In this embodiment, the yttrium nitrate solution has a mass fraction of 2-5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 5-8%.

[0025] The preparation method of a matte wood coating according to this embodiment includes the following steps: Weigh the raw materials for the matte wood coating according to the specified weight, mix the raw materials thoroughly to obtain a liquid matte wood coating; spray the liquid matte wood coating onto the substrate with a coating thickness of 0.2~0.3mm, dry at 40~45℃ for 12h, and finally cure under ultraviolet light with a curing energy of 100~200mj for 1h to obtain a solid layered matte wood coating.

[0026] Example 1: This embodiment of a matte wood coating comprises the following raw materials in parts by weight: The mixture comprises 30 parts of waterborne polyurethane acrylate resin, 20 parts of waterborne epoxy acrylate resin, 40 parts of functional monomer, 7 parts of combined functional agent, 3 parts of silane coupling agent, 4 parts of photoinitiator, 5 parts of modified fumed silica agent, and 45 parts of solvent.

[0027] In this embodiment, the double bond content of the waterborne polyurethane acrylate resin is 3.5 MEQ / g; the double bond content of the waterborne epoxy acrylate resin is 3.0 MEQ / g; the functional monomers are prepared by dipentaerythritol hexaacrylate, pentaerythritol triacrylate, and 2-methaneoxyethyl acrylate in a weight ratio of 3:3:2; the photoinitiator is prepared by photoinitiator TPO and photoinitiator ITX in a weight ratio of 1:1; the silane coupling agent is silane coupling agent KH560; and the solvent is ethanol.

[0028] The preparation method of the combined functional agent in this embodiment is as follows: S01: Add 3 parts by weight of carboxymethyl cellulose and 2 parts by weight of cerium oxide to 5 parts by weight of sodium lignosulfonate solution and mix thoroughly to obtain carboxymethyl cellulose solution; S02: Add 2 parts by weight of titanium dioxide and 3 parts by weight of talc powder to 4 parts by weight of sodium silicate solution and stir evenly to obtain a mixture. The blending solution and carboxymethyl cellulose solution were ultrasonically treated at a weight ratio of 5:8. After ultrasonic treatment, a combined solution based on carboxymethyl cellulose was obtained. S03: Preparation of functional improvers: S03a: Heat-treat nano-attapulgite at 210℃ for 10 min, then cool it down to 55℃ at a rate of 2℃ / min and keep it at that temperature to obtain heat-insulated nano-attapulgite. S03b: Sodium alginate powder is first stirred evenly in a sufficient amount of 5% potassium permanganate solution, then washed with water, filtered and dried to obtain dry sodium alginate powder; 3 parts by weight of dry sodium alginate powder, 2 parts by weight of nano calcium carbonate and 4 parts by weight of 4% lanthanum chloride solution are mixed evenly to obtain sodium alginate agent. S03c: 4 parts by weight of heat-insulating nano-attapulgite clay and 3 parts by weight of sodium alginate are mixed and ball-milled at a speed of 1000 r / min for 2 h. After ball milling, the mixture is filtered and dried to obtain the functional improver. S04: The combined liquid based on carboxymethyl cellulose and the functional improver were ball-milled at a weight ratio of 5:4 at a speed of 1500 r / min for 1 h. After ball milling, the mixture was filtered and dried to obtain the combined functional agent.

[0029] In this embodiment, the sodium lignosulfonate solution has a mass fraction of 5%; the sodium silicate solution has a mass fraction of 3%.

[0030] In this embodiment, the ultrasonic power of the ultrasonic treatment in S02 is 350W, and the ultrasonic treatment lasts for 1 hour.

[0031] The specific modification method of the modified fumed silica agent in this embodiment is as follows: S11: First, place the fumed silica in a 350W proton irradiation chamber for 1 hour. After irradiation, preheat it at 55°C for 1 hour to obtain preheated fumed silica. S12: The preheated fumed silica and the modified liquid are stirred and modified at a weight ratio of 5:7. The stirring speed is 450 r / min and the stirring time is 35 min. After stirring, the mixture is filtered and dried to obtain the modified fumed silica agent.

[0032] The modified liquid in this embodiment comprises the following raw materials in parts by weight: 2 parts diatomaceous earth, 1 part silicon carbide, 3 parts yttrium nitrate solution, 2 parts sodium dodecylbenzenesulfonate solution and 1 part β-cyclodextrin.

[0033] In this embodiment, the yttrium nitrate solution has a mass fraction of 2%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 5%.

[0034] The preparation method of a matte wood coating according to this embodiment includes the following steps: Weigh the raw materials for the matte wood coating according to the specified weight, mix the raw materials thoroughly to obtain a liquid matte wood coating; spray the liquid matte wood coating onto the substrate with a coating thickness of 0.2 mm, dry at 40°C for 12 hours, and finally cure under ultraviolet light with a curing energy of 100 mJ for 1 hour to obtain a solid layered matte wood coating.

[0035] Example 2: This embodiment of a matte wood coating comprises the following raw materials in parts by weight: The mixture comprises 35 parts of waterborne polyurethane acrylate resin, 25 parts of waterborne epoxy acrylate resin, 45 parts of functional monomer, 11 parts of combined functional agent, 6 parts of silane coupling agent, 7 parts of photoinitiator, 8 parts of modified fumed silica agent, and 50 parts of solvent.

[0036] In this embodiment, the double bond content of the waterborne polyurethane acrylate resin is 3.5 MEQ / g; the double bond content of the waterborne epoxy acrylate resin is 3.0 MEQ / g; the functional monomers are prepared by dipentaerythritol hexaacrylate, pentaerythritol triacrylate, and 2-methaneoxyethyl acrylate in a weight ratio of 3:3:2; the photoinitiator is prepared by photoinitiator TPO and photoinitiator ITX in a weight ratio of 1:1; the silane coupling agent is silane coupling agent KH560; and the solvent is ethanol.

[0037] The preparation method of the combined functional agent in this embodiment is as follows: S01: Add 5 parts by weight of carboxymethyl cellulose and 3 parts by weight of cerium oxide to 8 parts by weight of sodium lignosulfonate solution and mix thoroughly to obtain carboxymethyl cellulose solution; S02: Add 4 parts by weight of titanium dioxide and 5 parts by weight of talc powder to 7 parts by weight of sodium silicate solution and stir evenly to obtain a mixture. The blending solution and carboxymethyl cellulose solution were ultrasonically treated at a weight ratio of 5:8. After ultrasonic treatment, a combined solution based on carboxymethyl cellulose was obtained. S03: Preparation of functional improvers: S03a: Heat-treat nano-attapulgite at 220℃ for 10 min, then cool it down to 55℃ at a rate of 5℃ / min and keep it at that temperature to obtain heat-insulated nano-attapulgite. S03b: Sodium alginate powder is first stirred evenly in a sufficient amount of 5% potassium permanganate solution, then washed with water, filtered and dried to obtain dry sodium alginate powder; 5 parts by weight of dry sodium alginate powder, 4 parts by weight of nano calcium carbonate and 6 parts by weight of 4% lanthanum chloride solution are mixed evenly to obtain sodium alginate agent. S03c: 6 parts by weight of heat-insulating nano-attapulgite clay and 5 parts by weight of sodium alginate are mixed and ball-milled at a speed of 1000 r / min for 2 hours. After ball milling, the mixture is filtered and dried to obtain the functional improver. S04: The combined liquid based on carboxymethyl cellulose and the functional improver were ball-milled at a weight ratio of 7:4 at a speed of 1500 r / min for 1 h. After ball milling, the mixture was filtered and dried to obtain the combined functional agent.

[0038] In this embodiment, the sodium lignosulfonate solution has a mass fraction of 8%; the sodium silicate solution has a mass fraction of 5%.

[0039] In this embodiment, the ultrasonic power of the ultrasonic treatment in S02 is 400W, and the ultrasonic treatment lasts for 1 hour.

[0040] The specific modification method of the modified fumed silica agent in this embodiment is as follows: S11: First, place the fumed silica in a 400W proton irradiation chamber for 1 hour. After irradiation, preheat it at 60°C for 1 hour to obtain preheated fumed silica. S12: The preheated fumed silica and the modified liquid are stirred and modified at a weight ratio of 5:7. The stirring speed is 550 r / min and the stirring time is 35 min. After stirring, the mixture is filtered and dried to obtain the modified fumed silica agent.

[0041] The modified liquid in this embodiment comprises the following raw materials in parts by weight: 5 parts diatomaceous earth, 3 parts silicon carbide, 5 parts yttrium nitrate solution, 4 parts sodium dodecylbenzenesulfonate solution and 2 parts β-cyclodextrin.

[0042] In this embodiment, the yttrium nitrate solution has a mass fraction of 5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 8%.

[0043] The preparation method of a matte wood coating according to this embodiment includes the following steps: Weigh the raw materials for the matte wood coating according to the specified weight, mix the raw materials thoroughly to obtain a liquid matte wood coating; spray the liquid matte wood coating onto the substrate with a coating thickness of 0.3 mm, dry at 45°C for 12 hours, and finally cure under ultraviolet light with a curing energy of 200 mJ for 1 hour to obtain a solid layered matte wood coating.

[0044] Example 3: This embodiment of a matte wood coating comprises the following raw materials in parts by weight: The composition includes 32.5 parts of waterborne polyurethane acrylate resin, 22.5 parts of waterborne epoxy acrylate resin, 42.5 parts of functional monomer, 9 parts of combined functional agent, 4.5 parts of silane coupling agent, 5.5 parts of photoinitiator, 6.5 parts of modified fumed silica agent, and 47.5 parts of solvent.

[0045] In this embodiment, the double bond content of the waterborne polyurethane acrylate resin is 3.5 MEQ / g; the double bond content of the waterborne epoxy acrylate resin is 3.0 MEQ / g; the functional monomers are prepared by dipentaerythritol hexaacrylate, pentaerythritol triacrylate, and 2-methaneoxyethyl acrylate in a weight ratio of 3:3:2; the photoinitiator is prepared by photoinitiator TPO and photoinitiator ITX in a weight ratio of 1:1; the silane coupling agent is silane coupling agent KH560; and the solvent is ethanol.

[0046] The preparation method of the combined functional agent in this embodiment is as follows: S01: Add 4 parts by weight of carboxymethyl cellulose and 2.5 parts by weight of cerium oxide to 6.5 parts by weight of sodium lignosulfonate solution and mix thoroughly to obtain carboxymethyl cellulose solution; S02: Add 3 parts by weight of titanium dioxide and 4 parts by weight of flake talc powder to 5.5 parts by weight of sodium silicate solution and stir evenly to obtain a mixed solution; The blending solution and carboxymethyl cellulose solution were ultrasonically treated at a weight ratio of 5:8. After ultrasonic treatment, a combined solution based on carboxymethyl cellulose was obtained. S03: Preparation of functional improvers: S03a: Nano-attapulgite is heat-treated at 215℃ for 10 min, then cooled to 55℃ at a rate of 3.5℃ / min and kept at that temperature to obtain heat-insulated nano-attapulgite. S03b: Sodium alginate powder is first stirred evenly in a sufficient amount of 5% potassium permanganate solution, then washed with water, filtered and dried to obtain dry sodium alginate powder; 4 parts by weight of dry sodium alginate powder, 3 parts by weight of nano calcium carbonate and 5 parts by weight of 4% lanthanum chloride solution are mixed evenly to obtain sodium alginate agent. S03c: 5 parts by weight of heat-insulating nano-attapulgite clay and 4 parts by weight of sodium alginate are mixed and ball-milled at a speed of 1000 r / min for 2 h. After ball milling, the mixture is filtered and dried to obtain the functional improver. S04: The combined liquid based on carboxymethyl cellulose and the functional improver were ball-milled at a weight ratio of 6:4 at a speed of 1500 r / min for 1 h. After ball milling, the mixture was filtered and dried to obtain the combined functional agent.

[0047] In this embodiment, the sodium lignosulfonate solution has a mass fraction of 6.5%; the sodium silicate solution has a mass fraction of 4%.

[0048] In this embodiment, the ultrasonic power of the ultrasonic treatment in S02 is 375W, and the ultrasonic treatment lasts for 1 hour.

[0049] The specific modification method of the modified fumed silica agent in this embodiment is as follows: S11: First, place the fumed silica in a 375W proton irradiation chamber for 1 hour. After irradiation, preheat it at 58°C for 1 hour to obtain preheated fumed silica. S12: The preheated fumed silica and the modified liquid are stirred and modified at a weight ratio of 5:7. The stirring speed is 500 r / min, and the stirring is carried out for 35 min. After stirring, the mixture is filtered and dried to obtain the modified fumed silica agent.

[0050] The modified liquid in this embodiment comprises the following raw materials in parts by weight: 3.5 parts diatomaceous earth, 2 parts silicon carbide, 4 parts yttrium nitrate solution, 3 parts sodium dodecylbenzenesulfonate solution and 1.5 parts β-cyclodextrin.

[0051] In this embodiment, the yttrium nitrate solution has a mass fraction of 3.5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 6.5%.

[0052] The preparation method of a matte wood coating according to this embodiment includes the following steps: Weigh the raw materials for the matte wood coating according to the specified weight, mix the raw materials thoroughly to obtain a liquid matte wood coating; spray the liquid matte wood coating onto the substrate with a coating thickness of 0.25 mm, dry at 42℃ for 12 hours, and finally cure under ultraviolet light with a curing energy of 150 mJ for 1 hour to obtain a solid layered matte wood coating.

[0053] Comparative Example 1: Unlike Example 3, no combined functional agent was added.

[0054] Comparative Example 2: Unlike Example 3, no carboxymethyl cellulose-based compound solution was added in the preparation of the compound functional agent.

[0055] Comparative Example 3: Unlike Example 3, no blending solution was added in the preparation of the combined liquid based on carboxymethyl cellulose.

[0056] Comparative Example 4: Unlike Example 3, no carboxymethyl cellulose solution was added in the preparation of the combined solution based on carboxymethyl cellulose.

[0057] Comparative Example 5: Unlike Example 3, no functional improver was added in the preparation of the combined functional agent.

[0058] Comparative Example 6: Unlike Example 3, no heat-insulating nano-attapulgite was added in the preparation of the functional improver.

[0059] Comparative Example 7: Unlike Example 3, sodium alginate was not added in the preparation of the functional improver.

[0060] Comparative Example 8: Unlike Example 3, no modified fumed silica agent was added.

[0061] Comparative Example 9: Unlike Example 3, no modifying liquid was added during the preparation of the modified fumed silica agent.

[0062] Comparative Example 10: Unlike Example 3, no diatomaceous earth or silicon carbide was added to the modified liquid.

[0063] Comparative Example 11: Unlike Example 3, β-cyclodextrin and yttrium nitrate solution were not added to the modified solution.

[0064] The products of Examples 1-3 and Comparative Examples 1-11 were subjected to matte finish, hardness and impact resistance tests under normal conditions, water resistance and cold and heat resistance conditions. The water resistance and cold and heat resistance conditions were: the products were placed under 10% humidity for 2 hours, then placed at 70°C for 5 hours, and finally placed at -5°C for 5 hours. The test results are shown in Table 1.

[0065] Table 1. Product performance test results of Examples 1-3 and Comparative Examples 1-11: As can be seen from Comparative Examples 1-11 and Examples 1-3, the product of Example 3 has excellent impact resistance and hardness, as well as excellent matte gloss performance. These three aspects can be improved in a coordinated manner. In addition, the product exhibits excellent performance stability under water resistance and cold and heat resistance conditions. As can be seen from Comparative Examples 1-7, Comparative Example 8 and Example 3, the performance of the product deteriorates significantly when neither the combined functional agent nor the modified fumed silica agent is added, especially under water resistance and cold and heat resistance conditions. The performance of the product changes significantly when the combined functional agent and the modified fumed silica agent are blended and formulated together to achieve synergistic effect. In the preparation of combined functional agents, the performance of the products all tended to deteriorate to varying degrees when the combined functional agent was not prepared with a carboxymethyl cellulose-based combined liquid, a carboxymethyl cellulose-based combined liquid was not prepared with a blending liquid, a carboxymethyl cellulose-based combined liquid was not prepared with a carboxymethyl cellulose liquid, a combined functional agent was not prepared with a functional improver, a functional improver was not prepared with heat-insulating nano-attapulgite, or a functional improver was not prepared with sodium alginate. The combined functional agent prepared by using the functional improver obtained by the specific method of this invention in combination with the carboxymethyl cellulose-based combined liquid had the most significant performance effect. The combined functional agent prepared by other methods was not as effective as the product prepared by this invention. As can be seen from Comparative Examples 9-11 and Example 3, the performance of products deteriorated to varying degrees when no modifying liquid was added during the preparation of the modified fumed silica agent, no diatomaceous earth or silicon carbide was added to the modifying liquid, and no β-cyclodextrin or yttrium nitrate solution was added to the modifying liquid. The modified fumed silica improved by the modifying liquid obtained by the specific method of this invention showed the most significant performance effect.

[0066] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A matte wood varnish, characterized in that, Including the following parts by weight of raw materials: The composition includes 30-35 parts of waterborne polyurethane acrylate resin, 20-25 parts of waterborne epoxy acrylate resin, 40-45 parts of functional monomer, 7-11 parts of combined functional agent, 3-6 parts of silane coupling agent, 4-7 parts of photoinitiator, 5-8 parts of modified fumed silica agent, and 45-50 parts of solvent.

2. The matte wood varnish according to claim 1, characterized in that, The matte wood varnish comprises the following raw materials in parts by weight: The composition includes 32.5 parts of waterborne polyurethane acrylate resin, 22.5 parts of waterborne epoxy acrylate resin, 42.5 parts of functional monomer, 9 parts of combined functional agent, 4.5 parts of silane coupling agent, 5.5 parts of photoinitiator, 6.5 parts of modified fumed silica agent, and 47.5 parts of solvent.

3. The matte wood varnish according to claim 1, characterized in that, The waterborne polyurethane acrylate resin has a double bond content of 3.5 MEQ / g; the waterborne epoxy acrylate resin has a double bond content of 3.0 MEQ / g; the functional monomers are prepared by mixing pentaerythritol hexaacrylate, pentaerythritol triacrylate, and 2-methaneoxyethyl acrylate in a weight ratio of 3:3:

2. The photoinitiator is prepared by mixing photoinitiator TPO and photoinitiator ITX in a weight ratio of 1:

1. The silane coupling agent is silane coupling agent KH560; The solvent is ethanol.

4. The matte wood varnish according to claim 1, characterized in that, The preparation method of the combined functional agent is as follows: S01: Add 3-5 parts by weight of carboxymethyl cellulose and 2-3 parts by weight of cerium oxide to 5-8 parts by weight of sodium lignosulfonate solution and mix thoroughly to obtain carboxymethyl cellulose solution; S02: Add 2-4 parts by weight of titanium dioxide and 3-5 parts by weight of flaky talc powder to 4-7 parts by weight of sodium silicate solution and stir evenly to obtain a mixed solution; The blending solution and carboxymethyl cellulose solution were ultrasonically treated at a weight ratio of 5:

8. After ultrasonic treatment, a combined solution based on carboxymethyl cellulose was obtained. S03: Preparation of functional improvers: S03a: Heat-treat nano-attapulgite at 210~220℃ for 10min, then cool it down to 55℃ at a rate of 2~5℃ / min and keep it at that temperature to obtain heat-insulated nano-attapulgite. S03b: Sodium alginate powder is first stirred evenly in a sufficient amount of 5% potassium permanganate solution, then washed with water, filtered and dried to obtain dry sodium alginate powder; 3-5 parts of dry sodium alginate powder, 2-4 parts of nano calcium carbonate and 4-6 parts of 4% lanthanum chloride solution are mixed evenly according to the weight to obtain sodium alginate agent. S03c: 4-6 parts by weight of heat-insulating nano-attapulgite clay and 3-5 parts by weight of sodium alginate are mixed and ball-milled at a speed of 1000 r / min for 2 hours. After ball milling, the mixture is filtered and dried to obtain the functional improver. S04: The combined liquid based on carboxymethyl cellulose and the functional improver were ball-milled at a weight ratio of (5~7):4 at a speed of 1500 r / min for 1 h. After ball milling, the mixture was filtered and dried to obtain the combined functional agent.

5. A matte wood varnish according to claim 4, characterized in that, The sodium lignosulfonate solution has a mass fraction of 5-8%; the sodium silicate solution has a mass fraction of 3-5%.

6. The matte wood varnish according to claim 4, characterized in that, In S02, the ultrasonic power of the ultrasonic treatment is 350~400W, and the ultrasonic treatment lasts for 1 hour.

7. A matte wood varnish according to claim 4, characterized in that, The specific modification method for the modified fumed silica agent is as follows: S11: Place the fumed silica in a proton irradiation chamber of 350~400W for 1 hour. After irradiation, preheat it at 55~60℃ for 1 hour to obtain preheated fumed silica. S12: The preheated fumed silica and the modified liquid are stirred and modified at a weight ratio of 5:

7. The stirring speed is 450~550r / min, and the stirring is carried out for 35min. After stirring, the mixture is filtered and dried to obtain the modified fumed silica agent.

8. A matte wood varnish according to claim 7, characterized in that, The modified liquid comprises the following raw materials in parts by weight: 2-5 parts diatomaceous earth, 1-3 parts silicon carbide, 3-5 parts yttrium nitrate solution, 2-4 parts sodium dodecylbenzenesulfonate solution, and 1-2 parts β-cyclodextrin.

9. A matte wood coating according to claim 8, characterized in that, The yttrium nitrate solution has a mass fraction of 2-5%; the sodium dodecylbenzenesulfonate solution has a mass fraction of 5-8%.

10. A method for preparing a matte wood coating, used to prepare a matte wood coating as described in any one of claims 1 to 9, characterized in that, Includes the following steps: Weigh the raw materials for the matte wood coating according to the specified weight, mix the raw materials thoroughly to obtain a liquid matte wood coating; spray the liquid matte wood coating onto the substrate with a coating thickness of 0.2~0.3mm, dry at 40~45℃ for 12h, and finally cure under ultraviolet light with a curing energy of 100~200mj for 1h to obtain a solid layered matte wood coating.

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