Water-based single-component full-matt coating, preparation method and application thereof

Abstract

The present application relates to the technical field of wood paint, and discloses a water-based single-component full-matt skin-feeling paint, a preparation method and application thereof, wherein the water-based single-component full-matt skin-feeling paint comprises, by weight percentage, 70-80% of water-based skin-feeling polyurethane resin, 10-18% of water-based blocked curing agent, 0.2-0.4% of pH regulator, 0.2-0.5% of defoaming agent, 0.3-0.5% of wetting agent, 0.5-1% of silicone additive, 3-5% of polyamide wax emulsion, 1-10% of deionized water, 0.5-1% of silane coupling agent and 0.5-1% of thickening agent. After baking to form a baked paint, the water-based single-component full-matt skin-feeling paint has good water resistance, high hardness, low gloss and good skin-feeling effect, and the paint can form a baked paint at a low temperature of 75-85 DEG C, without affecting the quality of wood products.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wood paint, in particular to a water-based single-component full-matte skin-feel paint, a preparation method and application thereof. BACKGROUND

[0002] The water-based full-matte skin-feel finish has market demand in many wood fields, and is widely welcomed due to its ultra-low bone and skin feel. However, the general water-based single-component skin-feel finish has some inherent defects, such as poor water resistance, low hardness, low scratch resistance and wear resistance. The water-based double-component skin-feel finish has good physical properties and resistance, but has the problems of complex operation, short activation period and high cost.

[0003] In the application process of wood baking paint, the traditional baking paint has a high baking temperature, generally above 120 DEG C, which will cause the wood to bend and deform to some extent, thereby affecting the product quality and production of wood furniture. Therefore, the prior art still needs to be improved and developed. SUMMARY

[0004] In view of the above problems of the prior art, the present application aims to provide a water-based single-component full-matte skin-feel paint, a preparation method and application thereof, which aims to solve the problems of low hardness, poor resistance and high baking temperature of the existing water-based single-component baking paint.

[0005] The technical scheme of the present application is as follows:

[0006] A water-based single-component full-matte skin-feel paint, wherein the water-based skin-feel polyurethane resin, the water-based blocked curing agent, the pH regulator, the defoaming agent, the wetting agent, the organic silicon aid, the polyamide wax emulsion, the deionized water, the silane coupling agent and the thickening agent are 70-80%, 10-18%, 0.2-0.4%, 0.2-0.5%, 0.3-0.5%, 0.3-0.5%, 0.5-1%, 3-5%, 1-10%, 0.5-1% and 0.5-1% respectively.

[0007] The water-based single-component full-matte skin-feel paint, wherein the water-based skin-feel polyurethane resin, the water-based blocked curing agent, the pH regulator, the defoaming agent, the wetting agent, the organic silicon aid, the polyamide wax emulsion, the deionized water, the silane coupling agent and the thickening agent are 70%, 14%, 0.3%, 0.3%, 0.3%, 0.5%, 4%, 9%, 0.8% and 0.8% respectively.

[0008] The water-based single-component full-matt finish paint comprises, by weight percentage, 75% of the water-based skin-feel polyurethane resin, 15% of the water-based blocked curing agent, 0.3% of the pH regulator, 0.4% of the defoaming agent, 0.5% of the wetting agent, 0.8% of the silicone auxiliary agent, 5% of the polyamide wax emulsion, 1.5% of the deionized water, 1% of the silane coupling agent and 0.5% of the thickening agent.

[0009] The water-based single-component full-matt finish paint comprises, by weight percentage, 80% of the water-based skin-feel polyurethane resin, 10% of the water-based blocked curing agent, 0.2% of the pH regulator, 0.2% of the defoaming agent, 0.3% of the wetting agent, 0.8% of the silicone auxiliary agent, 3% of the polyamide wax emulsion, 4.5% of the deionized water, 0.5% of the silane coupling agent and 0.5% of the thickening agent.

[0010] A preparation method of the water-based single-component full-matt finish paint, comprising the steps of:

[0011] adding the water-based blocked curing agent, the pH regulator, the defoaming agent, the wetting agent, the silicone auxiliary agent, the polyamide wax emulsion, the deionized water and the silane coupling agent to the water-based skin-feel polyurethane resin under the first rotating speed, and then continuing to stir and disperse the mixture for 10-30 minutes under the second rotating speed to obtain a mixed solution;

[0012] adding the thickening agent to the mixed solution under stirring to adjust the viscosity of the mixed solution to 1000-2000 cps / 25℃, and obtaining the water-based single-component full-matt finish paint.

[0013] The preparation method of the water-based single-component full-matt finish paint, wherein the first rotating speed is 500-600 r / min, and the second rotating speed is 800-1000 r / min.

[0014] The application of the water-based single-component full-matt finish paint, wherein the water-based single-component full-matt finish paint is used as wood baking paint.

[0015] The application, wherein the step of using the water-based single-component full-matt finish paint as wood baking paint comprises:

[0016] mixing the water-based single-component full-matt finish paint with deionized water at a weight ratio of 1:(0.1-0.3) and then applying the mixture on the surface of the wood;

[0017] baking the applied wood at a temperature of 75-85℃ for 20-40 minutes to form the baking paint on the surface of the wood.

[0018] Beneficial effects: the water-based single-component full-matt skin feel paint is prepared by using water-based skin feel polyurethane resin, water-based blocked curing agent, wetting agent, defoaming agent, polyamide wax emulsion, organic silicon additive, pH regulator, deionized water, silane coupling agent and thickening agent; the water-based single-component full-matt skin feel paint is mixed with deionized water in a certain ratio during construction, and becomes high-hardness water-based single-component full-matt baking paint with a certain construction viscosity after baking. After the water-based single-component full-matt skin feel paint is baked to form the baking paint, it is proved by detection and trial that the coating has good water resistance, high hardness, low gloss and good skin feel effect, and the paint of the application can form the baking paint at a low temperature of 75-85 DEG C, without affecting the quality of wood products. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A preparation method flow chart of the water-based single-component full-matt skin feel paint is provided. DETAILED DESCRIPTION

[0020] The application provides a water-based single-component full-matt skin feel paint, a preparation method and application thereof, so that the purpose, technical scheme and effects of the application are more clear and definite, and the application is further described in detail below. It should be understood that the specific examples described herein are only used to explain the application, and are not used to limit the application.

[0021] The application provides a water-based single-component full-matt skin feel paint, which comprises, by weight percentage, 70-80% of water-based skin feel polyurethane resin, 10-18% of water-based blocked curing agent, 0.2-0.4% of pH regulator, 0.2-0.5% of defoaming agent, 0.3-0.5% of wetting agent, 0.5-1% of organic silicon additive, 3-5% of polyamide wax emulsion, 1-10% of deionized water, 0.5-1% of silane coupling agent and 0.5-1% of thickening agent.

[0022] In the application, the water-based skin feel polyurethane resin is from Guangdong Yin Yang Environmental Protection New Material Co., Ltd., and the model is YS-130, but is not limited to this; the water-based blocked curing agent is from Guangzhou Zengmao Chemical Technology Co., Ltd., and the model is ZS-835, but is not limited to this; the pH regulator is from Angus Chemical Company, and the model is AMP-95, but is not limited to this; the defoaming agent is from BYK-Chemie GmbH, and the model is BYK 024, but is not limited to this; the wetting agent is from Evonik Chemical, and the model is Surfynol 104E, but is not limited to this; the organic silicon additive is from Guangzhou Slocore High Polymer Co., Ltd., and the model is 351, but not limited to; the polyamide wax emulsion is from Longkou Yijiu Environmental Protection Technology Co., Ltd., model number TL-929, but not limited to; the silane coupling agent is from Momentive Advanced Materials (China) Co., Ltd., model number... A-187, but not limited to; the thickener is derived from Elementis Special Chemicals, model number [missing information]. 299, but not limited to this.

[0023] This invention utilizes water-based skin-feel polyurethane resin to provide low gloss and a skin-feel texture; a water-based blocking curing agent to increase crosslinking density after baking; silicone additives to provide scratch resistance and improve smoothness; polyamide wax emulsion to improve the feel; and a silane coupling agent to improve the overall performance of the coating, including water resistance, abrasion resistance, scratch resistance, and chemical resistance. When these materials are combined through appropriate processes, a high-hardness, water-based, one-component, fully matte skin-feel coating product is obtained. The water-based one-component coating made using water-based skin-feel polyurethane resin and a water-based blocking curing agent has the advantages of convenient application and simple process of one-component paints, while also possessing the excellent physical properties of water-based two-component paints. Due to the use of a low-temperature unblocking water-based blocking curing agent, the baking temperature is 75-85℃, which greatly reduces the risk of deformation of wood substrates due to high temperatures. After baking to form a baked enamel, the water-based one-component, fully matte skin-feel coating of this invention has been tested and proven to have good water resistance, high hardness, low gloss, and a good skin-feel effect.

[0024] In some specific embodiments, the water-based single-component fully matte skin-feel coating comprises, by weight percentage: 70% water-based skin-feel polyurethane resin, 14% water-based blocking curing agent, 0.3% pH adjuster, 0.3% defoamer, 0.3% wetting agent, 0.5% silicone additive, 4% polyamide wax emulsion, 9% deionized water, 0.8% silane coupling agent, and 0.8% thickener.

[0025] In some specific embodiments, the water-based single-component, fully matte skin-feel coating comprises, by weight percentage: 75% water-based skin-feel polyurethane resin, 15% water-based blocking curing agent, 0.3% pH adjuster, 0.4% defoamer, 0.5% wetting agent, 0.8% silicone additive, 5% polyamide wax emulsion, 1.5% deionized water, 1% silane coupling agent, and 0.5% thickener.

[0026] In some specific embodiments, the water-based single-component full-matte skin-feel coating comprises, by weight percentage, 80% of a water-based skin-feel polyurethane resin, 10% of a water-based blocked curing agent, 0.2% of a pH regulator, 0.2% of a defoaming agent, 0.3% of a wetting agent, 0.8% of a silicone auxiliary agent, 3% of a polyamide wax emulsion, 4.5% of deionized water, 0.5% of a silane coupling agent, and 0.5% of a thickening agent.

[0027] In some embodiments, a preparation method of the water-based single-component full-matte skin-feel coating is also provided, which comprises the following steps: Figure 1 as shown in the figure, which comprises the steps of:

[0028] S10, sequentially adding the water-based blocked curing agent, the pH regulator, the defoaming agent, the wetting agent, the silicone auxiliary agent, the polyamide wax emulsion, the deionized water, and the silane coupling agent into the water-based skin-feel polyurethane resin under a first rotational speed, and then continuing to stir and disperse for 10-30 min at a second rotational speed to obtain a mixed solution;

[0029] S20, continuously adding the thickening agent into the mixed solution under stirring to adjust the viscosity of the mixed solution to 1000-2000 cps / 25℃ to obtain the water-based single-component full-matte skin-feel coating.

[0030] The preparation method of the water-based single-component full-matte skin-feel coating has the characteristics of convenient construction and simple process. After being baked to form a baked paint, the water-based single-component full-matte skin-feel coating has good water resistance, high hardness, low gloss, and good skin-feel effect.

[0031] In some embodiments, the first rotational speed is 500-600 r / min, and the second rotational speed is 800-1000 r / min, but is not limited thereto.

[0032] In some embodiments, the water-based single-component full-matte skin-feel coating is used as a wood baked paint, and the steps include mixing the water-based single-component full-matte skin-feel coating with deionized water at a weight ratio of 1:(0.1-0.3) and then applying the mixture on the surface of the wood, and baking the coated wood at a temperature of 75-85℃ for 20-40 min to form a baked paint on the surface of the wood. The use of the low-temperature unblocking water-based blocked curing agent can greatly reduce the risk of deformation of the wood substrate due to high temperature.

[0033] The application will be further explained and described below through specific examples:

[0034] Example 1

[0035] An aqueous single-component full-matt finish paint, the ingredient composition of which is shown in Table 1:

[0036] Table 1 Paint composition

[0037]

[0038] The preparation of the aqueous single-component full-matt finish paint of the present example comprises the following steps:

[0039] Production process: a clean and standard dispersion cylinder is selected, 70 KG of aqueous skin-feel polyurethane resin is added, the disperser is started, and 14 KG of aqueous blocked curing agent, 0.3 KG of pH regulator, 0.3 KG of defoaming agent, 0.3 KG of wetting agent, 0.5 KG of silicone additive, 4 KG of polyamide wax emulsion, 9 KG of deionized water, and 0.8 KG of silane coupling agent are sequentially added at a low speed of 500 r / min, and dispersed at a medium speed of 800 r / min for 20 minutes until fully uniform, and 0.8 KG of thickening agent is used to adjust the viscosity to 1000-2000 cps / 25℃, thereby preparing the aqueous single-component full-matt finish paint.

[0040] When painting, the aqueous single-component full-matt finish paint and deionized water are mixed in a weight ratio of 1:0.1, an appropriate amount of deionized water is added to adjust the application viscosity, the deionized water does not participate in the chemical reaction and only plays a role in adjusting the dilution application viscosity; the mixed paint is coated on the surface of the wood, the drying conditions are set to 80℃ baking for 30 min, and a baking paint with strong hardness is formed on the surface of the wood.

[0041] Example 2

[0042] An aqueous single-component full-matt finish paint, the ingredient composition of which is shown in Table 2:

[0043] Table 2 Paint composition

[0044]

[0045] The preparation of the aqueous single-component full-matt finish paint of the present example comprises the following steps:

[0046] Production process: a clean and standard dispersion cylinder is selected, 75 KG of aqueous skin-feel polyurethane resin is added, the disperser is started, and 15 KG of aqueous blocked curing agent, 0.3 KG of pH regulator, 0.4 KG of defoaming agent, 0.5 KG of wetting agent, 0.8 KG of silicone additive, 5 KG of polyamide wax emulsion, 1.5 KG of deionized water, and 1 KG of silane coupling agent are sequentially added at a low speed of 550 r / min, and dispersed at a medium speed of 900 r / min for 20 minutes until fully uniform, and 0.5 KG of thickening agent is used to adjust the viscosity to 1000-2000 cps / 25℃, thereby preparing the aqueous single-component full-matt finish paint.

[0047] When painting, the water-based single-component full-matte skin feel paint and deionized water are mixed in a weight ratio of 1:0.2, and an appropriate amount of deionized water is added to adjust the construction viscosity. The deionized water does not participate in the chemical reaction and only plays a role in adjusting the dilution construction viscosity. The mixed paint is coated on the surface of the wood, and the drying conditions are set to 80°C for 30 minutes to form a baking paint with strong hardness on the surface of the wood.

[0048] Example 3

[0049] A water-based single-component full-matte skin feel paint, the ingredient composition of which is shown in Table 3:

[0050] Table 3 Paint composition

[0051]

[0052] The preparation of the water-based single-component full-matte skin feel paint of the present example includes the following steps:

[0053] Production process: a clean and standard dispersion cylinder is selected, 80KG of water-based skin feel polyurethane resin is added, and the dispersion machine is started. At a low speed of 600r / min, 10KG of water-based blocked curing agent, 0.2KG of PH regulator, 0.2KG of defoaming agent, 0.3KG of wetting agent, 0.8KG of silicone additive, 3KG of polyamide wax emulsion, 4.5KG of deionized water, and 0.5KG of silane coupling agent are added in sequence and dispersed at a medium speed of 1000r / min for 20 minutes until fully uniform. 0.5KG of thickening agent is used to adjust the viscosity to 1000-2000cps / 25°C to prepare the water-based single-component full-matte skin feel paint.

[0054] When painting, the water-based single-component full-matte skin feel paint and deionized water are mixed in a weight ratio of 1:0.3, and an appropriate amount of deionized water is added to adjust the construction viscosity. The deionized water does not participate in the chemical reaction and only plays a role in adjusting the dilution construction viscosity. The mixed paint is coated on the surface of the wood, and the drying conditions are set to 85°C for 40 minutes to form a baking paint with strong hardness on the surface of the wood.

[0055] The baking paints formed by drying and curing the paints in Examples 1-3 are tested for performance, and the results are shown in Table 4. Sample 1 is H12M0340 water-based skin feel clear finish (soft imitation leather) from JAB, and Sample 2 is MW5700 water-based two-component full-matte skin feel clear finish from JAB.

[0056] Table 4 Baking paint performance test results

[0057] Test item Example 1 Example 2 Example 3 Sample 1 Sample 2 Adhesion 0 grade 0 grade 0 grade 1 grade 0 grade Hardness (scratch) 2H 2H 2H F H Gloss (60°) 1° 1° 0.8° 3° 5° Resistance to alcohol (50%, 1 h) No abnormality No abnormality No abnormality Whitening Slight whitening Resistance to water (72 h) No abnormality No abnormality No abnormality Whitening No abnormality Resistance to scratching (100 g) Not scratched Not scratched Not scratched Scratched Not scratched

[0058] The performance indexes in Table 4 can refer to GB / T 23999-2009 "Water-based wood coating for interior decoration", and from the data in Table 4, it can be seen that the baked paint formed by the water-based single-component full-matte skin-feel coating prepared by the application is a water-based skin-feel baked paint finish with high hardness, good water resistance and alcohol resistance, and is an excellent product selection in the field of water-based skin-feel paint.

[0059] It should be understood that the application is not limited to the above examples, and can be improved or changed according to the above description for those skilled in the art, and all these improvements and changes shall belong to the protection scope of the appended claims of the application.

Claims

1. An aqueous one-component full-matt coating material, characterized in that By weight percentage, including: 80% of water-based skin-feeling polyurethane resin, 10% of water-based blocked curing agent, 0.2% of pH regulator, 0.2% of defoaming agent, 0.3% of wetting agent, 0.8% of silicone auxiliary agent, 3% of polyamide wax emulsion, 4.5% of deionized water, 0.5% of silane coupling agent and 0.5% of thickening agent; the model of the water-based skin-feeling polyurethane resin is YS-130, the model of the water-based blocked curing agent is ZS-835; the model of the defoaming agent is BYK 024; the model of the wetting agent is Surfynol 104E; the model of the silicone auxiliary agent is Silok® 351; the model of the pH regulator is AMP-95, the model of the polyamide wax emulsion is TL-929, the model of the silane coupling agent is SILQUEST® A-187, and the model of the thickening agent is RHEOLATE® 299.

2. A process for the preparation of an aqueous, one-component, full-matt coating material according to claim 1, characterized in that The method comprises the steps of: adding the water-based blocked curing agent, the pH regulator, the defoaming agent, the wetting agent, the silicone auxiliary agent, the polyamide wax emulsion, the deionized water and the silane coupling agent to the water-based skin-feeling polyurethane resin in sequence under the first rotating speed condition, and then continuing to stir and disperse the mixture for 10-30 min at the second rotating speed to obtain a mixed solution; adding the thickening agent to the mixed solution under stirring to adjust the viscosity of the mixed solution to 1000-2000 cps / 25°C to obtain a water-based one-component full-matt skin-feeling coating.

3. The method for preparing the water-based single-component, fully matte skin-feel coating according to claim 2, characterized in that, The first rotating speed is 500-600 r / min, and the second rotating speed is 800-1000 r / min.

4. Use of the water-based single-component full-matt paint according to claim 1, characterized in that, The water-based one-component full-matt skin-feeling coating is used as a wood baking paint.

5. Use according to claim 4, characterized in that, The step of using the water-based one-component full-matt skin-feeling coating as a wood baking paint comprises: mixing the water-based one-component full-matt skin-feeling coating with deionized water in a weight ratio of 1: (0.1-0.3) and then applying the mixture on the surface of the wood; baking the coated wood at a temperature of 75-85°C for 20-40 min to form a baking paint on the surface of the wood. The water-based one-component full-matt skin-feeling coating is used as a wood baking paint. The step of using the water-based one-component full-matt skin-feeling coating as a wood baking paint comprises: mixing the water-based one-component full-matt skin-feeling coating with deionized water in a weight ratio of 1: (0.1-0.3) and then applying the mixture on the surface of the wood; baking the coated wood at a temperature of 75-85°C for 20-40 min to form a baking paint on the surface of the wood.

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