CN112210283B

CN112210283B - Double-component polyurethane woodenware coating composite product and preparation method and application thereof

Info

Publication number: CN112210283B
Application number: CN202011048248.7A
Authority: CN
Inventors: 杨岳森; 冼思汉
Original assignee: Guangdong Carpoly Science & Technology Material Co ltd
Current assignee: Guangdong Carpoly Science & Technology Material Co ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2022-03-22
Anticipated expiration: 2040-09-29
Also published as: CN112210283A

Abstract

The invention relates to the field of wood coatings, in particular to a double-component polyurethane wood coating composite product and a preparation method and application thereof. The paint comprises a component A and a component B which are respectively packaged, wherein the component A comprises the following components in parts by mass: 29-41 parts of fatty acid resin; 12-28 parts of polyaspartic acid resin; 3-7 parts of propylene glycol methyl ether acetate; 17-23 parts of butyl acetate; the component B comprises: 75-85 parts of an HDI curing agent; and 15-25 parts of butyl acetate. The paint prepared by the invention reaches the performance standard of the traditional solvent type polyurethane wood paint, is simple and convenient to construct and high in tolerance, simultaneously greatly reduces the VOC emission to reach the standard of water-soluble wood paint, has the VOC emission not higher than 300g/L, and can be widely applied to wood production and processing processes.

Description

Double-component polyurethane woodenware coating composite product and preparation method and application thereof

Technical Field

The invention relates to the field of wood coatings, in particular to a double-component polyurethane wood coating composite product and a preparation method and application thereof.

Background

With the environmental protection issue being emphasized, many fields are improving the technology towards low toxicity or even no toxicity. The traditional polyurethane woodware coating has good physical properties, excellent surface effect, good construction tolerance, small influence by weather and environment and simple equipment, thereby being widely applied; however, the content of Volatile Organic Compounds (VOC) is high, so people try to develop aqueous wood coatings to solve the problem of high VOC content of the traditional polyurethane wood coatings. The VOC content of the polyurethane wood coating in GB/18581-. However, compared with the traditional polyurethane wood coating, the water-based wood coating has the defects of poor physical properties, high requirements on construction environment and drying condition and the like, so that the traditional polyurethane wood coating still cannot be replaced by the water-based wood coating under the conditions of high requirements on properties and complex construction environment.

However, with the release of GB/T38597-2020 technical requirements on low volatile organic compound content coating products, the VOC content requirement of the solvent type wood coating is reduced from originally not higher than 580g/L to not higher than 420g/L, and the application of GB/T38597-2020 can certainly influence the application of the traditional polyurethane wood coating.

Disclosure of Invention

Therefore, the polyurethane woodware coating combination product with low VOC content and the preparation method and the application thereof are needed to be provided on the premise of ensuring the performance and simple and convenient construction.

In one aspect of the present invention, a two-component polyurethane wood coating composition product is provided, which comprises a component A and a component B packaged separately;

the component A comprises the following components in parts by mass:

the component B comprises the following components in parts by mass:

75-85 parts of an HDI curing agent; and

15-25 parts of butyl acetate;

the solid content of the fatty acid resin is 99-100%, and the viscosity is 8000-10000 mPa & s;

the solid content of the polyaspartic acid resin is 99-100%, and the viscosity is 1000-2000 mPa.

In one embodiment, the mass ratio of the component A to the component B is 1: (0.45-0.7).

In one embodiment, the hydroxyl value of the fatty acid resin is 150-170 mgKOH/g.

In one embodiment, the amine value of the polyaspartic acid resin is 277-290 g/mol.

In one embodiment, the coating also comprises 0.1-0.5 part of defoaming agent.

In one embodiment, the paint also comprises 16-20 parts of pigment.

In one embodiment, the paint also comprises 0.1-0.5 part of leveling agent.

In one embodiment, the anti-settling agent further comprises 1-5 parts of the anti-settling agent.

In one embodiment, the paint also comprises 0.2-1 part of a dispersant.

According to the invention, the fatty acid resin, the polyaspartic acid resin and the HDI curing agent are selected, the mass parts of the components in the component A and the component B are limited, and the service life and the hardness of the prepared two-component polyurethane wood coating are balanced, so that the two-component polyurethane wood coating can meet the basic performance requirements of the traditional solvent type polyurethane wood coating, the hardness is not less than HB, and the service life is not less than 4 hours; the adopted resin has high solid content and low viscosity, no diluent is needed to be added when the resin is used, the construction is simple and convenient, the VOC content is ensured to be lower than 300g/L and is far lower than GB/T38597-2020 which has the requirement on the VOC content of the solvent type polyurethane woodware coating and is not higher than 420g/L, and the national standard of the VOC content of the water-based woodware coating can be reached; and the component A is prepared by selecting the mixed solvent, so that the coating still has longer usable time at higher temperature, the use efficiency under the common condition is considered, the construction latitude is improved, the influence by weather and environment is less, the construction equipment is simple, and the popularization and the application are facilitated.

In another aspect of the invention, a preparation method of the two-component polyurethane woodenware coating is provided, which comprises the following steps:

preparing materials according to the preset mass part in the double-component polyurethane woodenware coating;

mixing the raw materials, and stirring at a preset rotating speed for a preset time to prepare the corresponding components.

The invention also provides a double-component polyurethane woodenware coating which is obtained by mixing the combined product.

The invention also provides a woodware device with the surface coated with the double-component polyurethane woodware coating.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the accompanying examples. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise. In the description of the present invention, "a plurality" means at least one, e.g., one, two, etc., unless specifically limited otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention provides a double-component polyurethane woodenware coating composite product, which comprises a component A and a component B which are respectively packaged;

the component A comprises the following components in parts by mass:

the component B comprises the following components in parts by mass:

75-85 parts of an HDI curing agent; and

15-25 parts of butyl acetate;

the solid content of the polyaspartic acid resin is 99-100%, and the viscosity is 1000-2000 mPas.

Preferably, the component A comprises the following components in parts by mass:

the component B comprises the following components in parts by mass:

75-85 parts of an HDI curing agent; and

15-25 parts of butyl acetate;

Further preferably, the component A comprises the following components in parts by mass:

the component B comprises the following components in parts by mass:

75-85 parts of an HDI curing agent; and

15-25 parts of butyl acetate;

In general, the final coating performance of the coating is mainly determined by the composition and structure of resin, and the invention can prepare the double-component polyurethane coating which is specially suitable for woodware, has excellent performance, low VOC emission and simple and convenient construction by reasonably compounding the fatty acid resin and the polyaspartic acid resin.

In the traditional preparation of polyurethane paint, resin containing hydroxyl is used for crosslinking with a curing agent, so that the reaction speed is low, and the crosslinking effect is poor, so that the finally prepared polyurethane paint is deficient in hardness. According to the invention, the hydroxyl-containing fatty acid resin and the amino-containing polyaspartic acid resin are compounded, and in a proper proportion range, the hydroxyl-containing fatty acid resin has a slow reaction speed with the curing agent, so that the service life of the polyurethane coating can be prolonged, and the polyurethane coating cannot lose efficacy too quickly during construction; the crosslinking of the polyaspartic acid resin containing amino and the curing agent is better, the molecular weight of the polyaspartic acid resin is small, and the reaction speed is high, so that the finally prepared polyurethane coating has higher hardness due to the addition of the polyaspartic acid resin.

In addition, the solid content and viscosity of the resin directly affect the performance and construction convenience of the finally prepared coating. In the prior art, some proposals adopt alkyd resin with high solid content (solid content is 80-90%) and powder with low oil absorption to prepare coating with low VOC emission, but the viscosity of components in the proposals is too high, so that a strong solvent such as cyclohexanone is generally needed to reduce the viscosity, and an additional diluent is needed to meet the requirement of construction viscosity during construction, so that although the VOC emission of the proposals is reduced, the VOC emission is still increased during construction, and the requirement of the VOC emission of 300g/L cannot be met. According to the invention, the high-solid-content resin with the content of more than 99% is adopted, and the viscosity of the resin is controlled to be at a lower level, so that no diluent is preferably added in the paint, and the final VOC discharge amount can reach the level of no more than 300g/L of the waterborne wood coating.

The component A adopts a mixed solvent system of propylene glycol methyl ether acetate and butyl acetate, the volatilization speed of the propylene glycol methyl ether acetate is slow, the volatilization speed of the butyl acetate is moderate, the combination of the propylene glycol methyl ether acetate and the butyl acetate can ensure that the composition has longer usable time when being constructed at higher temperature, and the efficiency in daily construction is considered, so that the invention has better construction tolerance.

The component B adopts a high-solid-content HDI curing agent, the solid content of the HDI curing agent is not less than 99% at most, and the rest curing agents cannot reach the level at present, but if only the HDI curing agent is adopted in the traditional wood coating, the curing time is too long, the hardness cannot meet the requirement, even the smooth curing cannot be realized at low temperature, the construction solid content is low, and the cost is increased, so that the traditional wood coating usually adopts a composite curing agent, and other curing agents with low solid content must be introduced, so that the final construction solid content cannot reach a higher level and can only be maintained at about 50%. Preferably, in some embodiments, no other curing agent other than the HDI curing agent is present in the combination; according to the invention, through reasonable compounding of the components, under the condition of singly using the HDI curing agent, the HDI curing agent has proper curing time and meets the requirement of hardness, so that high construction solid content of 74% or more can be achieved.

In one specific example, the mass ratio of the component a to the component b is 1: (0.45-0.7); preferably, the mass ratio of the component A to the component B is 1: (0.45-0.55); further preferably, the mass ratio of the component A to the component B is 1: (0.5-0.55). When the mass ratio of the component A to the component B is too high, the production cost is too high; when the mass ratio is too low, the curing effect is affected, resulting in an unsatisfactory hardness of the final polyurethane coating.

In a specific example, the fatty acid resin has a hydroxyl value of 150 to 170 mgKOH/g; optionally, the hydroxyl value of the fatty acid resin may be, for example, 155 to 165mgKOH/g, or may also be, for example, 158mgKOH/g, 160mgKOH/g, or 162 mgKOH/g. When the hydroxyl value is higher, the crosslinking between the fatty acid resin and the curing agent is better, but when the hydroxyl value is too high, if the curing agent dosage is not enough, partial hydroxyl groups can not be subjected to crosslinking reaction, and the hardness of the finally prepared coating is influenced.

In one specific example, the amine value of the polyaspartic acid resin is 277-290 g/mol; optionally, the amine value of the polyaspartic acid resin can be 280-287 g/mol, 282g/mol, 284g/mol and 286 g/mol. When the amine value is higher, the crosslinking between the polyaspartic acid resin and the curing agent is better, but when the amine value is too high, the reaction speed is too high, and the service life of the finally prepared coating is influenced.

In a specific example, the coating also comprises 0.1-0.5 part of defoaming agent.

In a specific example, the paint further comprises 16-20 parts of a pigment, optionally, for example, titanium dioxide or barium sulfate; pigments are used primarily to provide hiding power.

In one specific example, the paint also comprises 0.1-0.5 part of leveling agent.

In a specific example, the paint also comprises 1-5 parts of an anti-settling agent.

In one specific example, the paint also comprises 0.2-1 part of a dispersant;

according to the invention, the fatty acid resin (with the viscosity of 8000-10000 mPa & s) and the polyaspartic acid resin (with the viscosity of 1000-2000 mPa & s) with the solid content of 99-100% are selected, so that the high construction solid content of 74% or more is realized, the paint has remarkable progress compared with the traditional paint with the construction solid content of only about 50%, and the construction time cost is greatly saved; the viscosity of the components is low, no diluent is needed to be added, the two components can meet the construction viscosity requirement of the polyurethane woodenware coating after being mixed according to a certain mass ratio, the construction blending is more convenient, and the fullness is also better; the VOC content is ensured to be lower than 300g/L and far lower than the requirement of GB/T38597-2020 on the VOC content of the solvent type polyurethane wood coating and is not higher than 420g/L, and the national standard of the VOC content of the water-based wood coating can be reached; and through reasonable compounding of the fatty acid resin, the polyaspartic acid resin, the solvent and the curing agent, the dual-component polyurethane wood coating is ensured to reach the standard of the traditional solvent type polyurethane wood coating in all properties: the hardness is more than or equal to HB, and the service life is more than or equal to 4 hours; the use of the mixed solvent ensures that the paint still has longer usable time at higher ambient temperature and also considers the use efficiency under the common condition, so that the two-component polyurethane wood coating prepared by the invention has high construction tolerance and is less influenced by weather and environment, in addition, the construction equipment is simple, and the popularization and the application are facilitated.

putting fatty acid resin, polyaspartic acid ester resin, a defoaming agent and a dispersing agent into a dispersion kettle, stirring for 5-10 min at 200-300 r/min, then putting titanium dioxide into the dispersion kettle, stirring for 10-15 min at 1000-1500 r/min, then putting an anti-settling agent, a leveling agent, propylene glycol monomethyl ether acetate and butyl acetate, and stirring for 10-15 min at 500-800 r/min to prepare a component A;

putting the HDI curing agent and butyl acetate into a dispersion kettle, and stirring for 5-15 min at 200-300 r/min to prepare a component B;

when in use, the component A and the component B are mixed according to the ratio of 1: (0.45-0.7) in a mass ratio.

The double-component polyurethane woodenware coating can be used in woodenware production, processing and other processes.

The two-component polyurethane wood coating of the present invention, the preparation method and the application thereof are further described in detail with reference to the following specific examples and comparative examples. It is understood that the following examples are more specific in terms of apparatus and materials, and in other specific examples, the present invention is not limited thereto, and for example, the preparation of the first and second components may be carried out without limitation by using a dispersion tank.

The defoamer was purchased from Kyoho under model AC 270.

The dispersant was purchased from Zhuhai Huaxia Pentium chemical Co., Ltd, model number HX-4028.

The anti-settling agent is purchased from Zhuhai Huaxia Pentium chemical Co., Ltd, and has the model of HX-8820.

The leveling agent was purchased from Pico chemical and was model number BYK-333.

Example 1

(1) Preparation of the component A:

weighing the following raw materials in parts by weight: 35 parts of fatty acid resin, 20 parts of polyaspartic acid ester resin, 0.4 part of defoaming agent, 0.6 part of dispersing agent, 2.5 parts of anti-settling agent, 0.5 part of flatting agent, 18 parts of titanium dioxide, 5 parts of propylene glycol methyl ether acetate and 18 parts of butyl acetate.

Putting the fatty acid resin, the polyaspartic acid ester resin, the defoaming agent and the dispersing agent into a dispersion kettle, stirring for 5-10 min at 200-300 r/min, then putting the titanium dioxide into the dispersion kettle, stirring for 10-15 min at 1000-1500 r/min, then putting the anti-settling agent, the leveling agent, the propylene glycol monomethyl ether acetate and the butyl acetate, and stirring for 10-15 min at 500-800 r/min to prepare the component A.

(2) Preparation of component B

Weighing the following raw materials in parts by weight: 80 parts of HDI curing agent and 20 parts of butyl acetate.

And (3) putting the HDI curing agent and butyl acetate into a dispersion kettle, and stirring for 5-15 min at 200-300 r/min to prepare the component B.

When in use, the component A and the component B are mixed according to the mass ratio of 1: 0.5.

Example 2

(1) Preparation of the component A:

weighing the following raw materials in parts by weight: 33 parts of fatty acid resin, 23 parts of polyaspartic acid ester resin, 0.4 part of defoaming agent, 0.6 part of dispersing agent, 2.5 parts of anti-settling agent, 0.5 part of flatting agent, 18 parts of titanium dioxide, 5 parts of propylene glycol methyl ether acetate and 17 parts of butyl acetate.

(2) Preparation of component B

When in use, the component A and the component B are mixed according to the mass ratio of 1: 0.47.

Example 3

(1) Preparation of the component A:

weighing the following raw materials in parts by weight: 39 parts of fatty acid resin, 14 parts of polyaspartic acid ester resin, 0.4 part of defoaming agent, 0.6 part of dispersing agent, 2.5 parts of anti-settling agent, 0.5 part of flatting agent, 18 parts of titanium dioxide, 5 parts of propylene glycol methyl ether acetate and 20 parts of butyl acetate.

(2) Preparation of component B

When in use, the component A and the component B are mixed according to the mass ratio of 1: 00.58.

Comparative example 1

(1) Preparation of the component A:

weighing the following raw materials in parts by weight: 43 parts of fatty acid resin, 10 parts of polyaspartic acid ester resin, 0.4 part of defoaming agent, 0.6 part of dispersing agent, 2.5 parts of anti-settling agent, 0.5 part of flatting agent, 18 parts of titanium dioxide, 5 parts of propylene glycol methyl ether acetate and 20 parts of butyl acetate.

(2) Preparation of component B

Comparative example 2

(1) Preparation of the component A:

weighing the following raw materials in parts by weight: 27 parts of fatty acid resin, 30 parts of polyaspartic acid ester resin, 0.4 part of defoaming agent, 0.6 part of dispersing agent, 2.5 parts of anti-settling agent, 0.5 part of flatting agent, 18 parts of titanium dioxide, 5 parts of propylene glycol methyl ether acetate and 16 parts of butyl acetate.

(2) Preparation of component B

Comparative example 3

(1) Preparation of the component A:

weighing the following raw materials in parts by weight: 57 parts of fatty acid resin, 0.4 part of defoaming agent, 0.6 part of dispersing agent, 2.5 parts of anti-settling agent, 0.5 part of flatting agent, 18 parts of titanium dioxide, 5 parts of propylene glycol methyl ether acetate and 16 parts of butyl acetate.

And putting the fatty acid resin, the defoaming agent and the dispersing agent into a dispersion kettle, stirring for 5-10 min at 200-300 r/min, then putting titanium dioxide into the dispersion kettle, stirring for 10-15 min at 1000-1500 r/min, then putting the anti-settling agent, the leveling agent, propylene glycol monomethyl ether acetate and butyl acetate, and stirring for 10-15 min at 500-800 r/min to obtain the component A.

(2) Preparation of component B

Comparative example 4

(1) Preparation of the component A:

weighing the following raw materials in parts by weight: 57 parts of polyaspartic acid ester resin, 0.4 part of defoaming agent, 0.6 part of dispersing agent, 2.5 parts of anti-settling agent, 0.5 part of flatting agent, 18 parts of titanium dioxide, 5 parts of propylene glycol methyl ether acetate and 16 parts of butyl acetate.

Putting the polyaspartic acid ester resin, the defoaming agent and the dispersing agent into a dispersion kettle, stirring for 5-10 min at 200-300 r/min, then putting titanium dioxide into the dispersion kettle, stirring for 10-15 min at 1000-1500 r/min, then putting the anti-settling agent, the leveling agent, propylene glycol methyl ether acetate and butyl acetate, and stirring for 10-15 min at 500-800 r/min to prepare the component A.

(2) Preparation of component B

Comparative example 5:

(1) preparation of the component A:

(2) Preparation of component B

When in use, the component A and the component B are mixed according to the mass ratio of 1: 0.4.

Performance testing

The two-component low-VOC environmental-friendly polyurethane wood paint and the conventional polyurethane wood paint (KBM 1119, manufactured by camouly) prepared in each example and comparative example were tested for processability, VOC emission and paint film performance, and the test methods were as follows, and the test results are shown in table 1:

the construction viscosity testing method comprises the following steps: mixing the component A, the component B and the diluent (only required by the traditional polyurethane wood paint) according to a proportion, stirring, adjusting the temperature to 25 ℃, and measuring seconds by using a coating-4 cup.

The construction solid content testing method comprises the following steps: mixing the component A, the component B and the diluent in proportion, stirring, and drying in an oven at 120 ℃ for 2 hours for measurement.

The VOCs content testing method comprises the following steps: testing according to the test method specified in GB 18581.

The time available test method: after the component A, the component B and the diluent (only required by the traditional polyurethane wood paint) are mixed according to the proportion, the coating-4 cups are used for measuring seconds, and the time of the seconds reaches 30 s.

The hardness test method comprises the following steps: testing according to the test method specified in GB/T23997.

TABLE 1

Item	Construction viscosity	Construction anchor	VOC content g/L	Time of use	Hardness of
						Example 1	16s	75.5％	276	5h	F
Example 2	16s	75.5％	282	4h	F
						Example 3	17s	74％	291	5.5h	HB
Comparative example 1	16s	74％	303	6h	B
						Comparative example 2	16s	76.5％	274	3h	HB
Comparative example 3	18s	76.5％	271	7h	2B
						Comparative example 4	15s	76.5％	277	1h	F
Comparative example 5	17s	75％	290	5h	B
						Traditional polyurethane coatings	16s	57％	540	5h	HB

From the above table, the two-component polyurethane wood coatings in examples 1 to 3 all have VOC emission of less than 300g/L in the construction state, the construction solid content of 74% or more, the usable time of 4 hours or more, and the hardness of the two-component polyurethane wood coatings can meet the requirement (HB) or even exceed the requirement (F). In comparative example 1, the use amount of the fatty acid resin was too high and the use amount of the polyaspartic acid resin was too low, and although the VOC discharge amount was substantially ensured to be around 300g/L and the use time could be over 4 hours, the hardness did not reach the standard (less than HB); in comparative example 2, the use amount of the fatty acid resin was reduced and the use amount of the polyaspartic acid resin was too high, and although the hardness reached the standard, the usable time was only 3 hours; both comparative example 3 and comparative example 4 use a single resin system and the imbalance in properties is more severe. Therefore, in the invention, the selection of the fatty acid resin-polyaspartic acid resin mixed system is of great importance, and the compounding ratio of the fatty acid resin and the polyaspartic acid resin is also a key factor for ensuring the balance of the performances of the finally obtained double-component polyurethane wood coating in all aspects.

In comparative example 5, although the compounding ratio of each component in the A component and the B component is the same as that in example 1, certain performance imbalance, such as hardness failure, can still be caused due to improper selection of the mass ratio of the A component and the B component during use.

In the traditional polyurethane coating, the VOC emission in the construction process is up to 540g/L, which is nearly twice as high as that of the embodiment of the invention, so the pollution is serious in the construction process; and the construction solid content is lower, only 57%, the construction times are many, and the construction cost is higher.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The double-component polyurethane woodware coating composite product is characterized by comprising a component A and a component B which are packaged respectively, wherein the mass ratio of the component A to the component B is 1: (0.45-0.7);

the component A comprises the following components in parts by mass:

29-41 parts of fatty acid resin;

12-28 parts of polyaspartic acid ester resin;

3-7 parts of propylene glycol methyl ether acetate; and

17-23 parts of butyl acetate;

the component B comprises the following components in parts by mass:

75-85 parts of an HDI curing agent; and

15-25 parts of butyl acetate;

the solid content of the fatty acid resin is 99-100%, the viscosity is 8000-10000 mPa & s, and the hydroxyl value is 150-170 mgKOH/g;

the polyaspartic acid ester resin has a solid content of 99-100%, a viscosity of 1000-2000 mPa & s, and an amine value of 277-290 g/mol.

2. The two-component polyurethane wood coating composition product of claim 1, wherein the component A further comprises 0.1-0.5 parts of a defoamer.

3. The two-component polyurethane wood coating composition product of claim 1, wherein the a component further comprises 16-20 parts of a pigment.

4. The two-component polyurethane woodenware coating composition product of claim 1, wherein the component A further comprises 0.1-0.5 part of a leveling agent.

5. The two-component polyurethane wood coating composition product of claim 1, wherein the component A further comprises 1-5 parts of an anti-settling agent.

6. The two-component polyurethane wood coating composition product of claim 1, wherein the component A further comprises 0.2-1 part of a dispersant.

7. A method for preparing the two-component polyurethane woodenware coating composition product according to any one of claims 1 to 6, characterized by comprising the following steps: mixing the raw materials in the component A and the component B respectively.

8. The method according to claim 7, wherein the component A is prepared by putting the fatty acid resin and the polyaspartic acid ester resin into a dispersion tank, stirring at 200 r/min-300 r/min for 5 min-10 min, then putting propylene glycol methyl ether acetate and butyl acetate, and stirring at 500 r/min-800 r/min for 10 min-15 min;

9. A two-component polyurethane woodenware coating, characterized in that, the coating is obtained by mixing the combination product of any one of claims 1 to 6.

10. A wood article device characterized by being surface coated with the two-component polyurethane wood coating of claim 9.