Preparation method of super-strong water-resistant solid wood veneer board

Abstract

The invention belongs to a preparation method of a super-strong water-resistant solid wood veneer board, which comprises the following steps: sequentially carrying out surface oxygenation treatment, coordination and lamination, assembly and heating and pressurizing treatment on a solid wood veneer and a solid wood base material to obtain the super-strong water-resistant solid wood veneer board. The pasting mask achieved through the method has the pasting strength superior to that of a traditional adhesive veneer, the water resistance can reach the national standard III type dipping stripping performance standard, zero formaldehyde release of the solid wood veneer is achieved, and the method has the advantages of being low in cost, environmentally friendly and the like.

Description

Technical Field

[0001] The invention belongs to a method for preparing a super-strong water-resistant solid wood veneer board. Background Art

[0002] Solid wood veneer is an important method to improve the aesthetics and added value of fast-growing wood. Different from impregnated film paper veneer, PVC and PET decorative film, solid wood veneer retains the natural texture of wood products, has the advantages of diverse texture, strong durability, easy processing, etc., and has a wide range of applications and is irreplaceable in the field of furniture and decoration.

[0003] When solid wood is veneered, it is usually necessary to apply liquid adhesive or hot-melt bonding by attaching thermoplastic film. The use of adhesives will cause certain environmental pollution and adhesive defects, such as the release of formaldehyde into the air. In order to achieve zero formaldehyde release of solid wood veneers, people have developed bonding methods such as isocyanate glue and EVA film. The preparation of environmentally friendly adhesives and formaldehyde-free thermoplastic films has undoubtedly increased the production cost of solid wood veneers. In the production process, additional regulation of the moisture content of the wood is usually required to ensure effective bonding between the wood veneers, making the preparation process of solid wood veneers more complicated.

[0004] In addition, in the current veneering method, solid wood needs to be kept dry when used as veneer, but thin and dry solid wood veneers have poor dimensional stability, which leads to certain veneer losses in the processing process and a high rate of unqualified veneers. In addition, as solid wood, the veneer after bonding is greatly affected by water, which affects the quality of solid wood veneer. Summary of the invention

[0005] The purpose of the present invention is to design a method for preparing a super water-resistant solid wood veneer board material, which has the advantages of firm adhesion and zero formaldehyde, high adhesion strength, water resistance, low cost and simple process.

[0006] To this end, a method for preparing a super water-resistant solid wood veneer board of the present invention comprises the following steps: (1) Preparation of solid wood substrate, including whole wood substrate and particle substrate; The full wood substrate is formed by one or more layers of wood boards being staggered and assembled up and down, the wood boards on the same layer have the same thickness, and the wood boards on the same layer are formed by one or more wood boards being assembled side by side; the bonding surface of the full wood substrate formed by several wood boards being assembled side by side or multiple wood boards being staggered and assembled up and down is immersed in an oxygenated treatment solution, the thickness of the immersed bonding surface is 1 to 3 mm, the temperature is 60 to 90° C., the immersion time is 1 to 48 hours, and the bonding surface is washed clean; then 0.1 to 500 mmol / L of a coordination solution is sprayed on the bonding surface, the assembled full wood substrate is placed under a pressure of 1 to 20 MPa, the pressure is perpendicular to the bonding surface, the temperature is 60 to 170° C., and the temperature is hot pressed for 0.5 to 48 hours, and after cooling, it is taken out, and the width and thickness are fixed to obtain the full wood substrate; The particle substrate is composed of wood particles with a particle size of 1 to 5 mm; the wood particles are immersed in an oxygenated treatment solution at a temperature of 60 to 90° C. for an immersion time of 1 to 48 hours, the wood particles are fished out, and the wood particles are washed clean with water; then the water-cleaned wood particles are immersed in a 0.1 to 500 mmol / L coordination solution or the water-cleaned wood particles are sprayed with a 0.1 to 500 mmol / L coordination solution and stirred evenly, the immersed wood particles are placed in a mold, pressurized with a pressure of 1 to 20 MPa, with the pressure surface facing downward, at a temperature of 60 to 170° C., hot pressed for 0.5 to 48 hours, and taken out after cooling to obtain a particle substrate; (2) The solid wood veneer material is a solid wood veneer material or a bamboo veneer material with a thickness of 1 to 5 mm; (3) Oxygenation treatment of the surface of solid wood veneer and all-wood substrate: immerse the adhesive surface of the solid wood veneer and all-wood substrate in the oxygenation treatment solution, with a thickness of 1 to 3 mm, a temperature of 60 to 90 ° C, an immersion time of 1 to 48 hours, and wash the adhesive surface clean with water; (4) Take out the solid wood veneer material and the whole wood substrate after oxygen treatment, and spray 0.1-500 mmol / L of coordination solution on the pasting surface; Or spray 0.1-500 mmol / L of coordination solution on the pasting surface of the particle substrate; (5) The solid wood veneer material and the whole wood substrate or particle substrate are bonded and superimposed on each other, and then hot-pressed at 1 to 20 MPa and 60 to 170° C. for 0.5 to 48 hours. After cooling, the solid wood veneer material is taken out to obtain a solid wood veneer board.

[0007] As a further description of the above technical solution: the oxygenated treatment solution is one of acrylic acid / ethanol, citric acid / trisodium citrate, sodium hypochlorite, hydrogen peroxide, periodic acid, periodate, acidic 2,2,6,6-tetramethylpiperidin-1-oxyl free radical (TEMPO) / sodium hypochlorite / sodium chlorite systems, and the mass percentage of the material in the oxygenated treatment solution is 0.1% to 30%.

[0008] As a further description of the above technical solution: the coordination solution is a cobalt ion solution with a concentration of 0.1 to 500 mmol / L, and the cobalt ion solution can be any one of cobalt chloride, cobalt nitrate and cobalt sulfate.

[0009] As a further description of the above technical solution: the amount of the coordination solution sprayed on the pasting surface is 0.1-3 L / m 2 .

[0010] As a further description of the above technical solution: the material of the solid wood veneer material is ebony, cherry, walnut, oak, teak, or any other type of wood, or bamboo.

[0011] As a further description of the above technical solution: the layer of the full wood substrate is a layer of wood boards with the same thickness, and the hard and soft woods of the same length are placed adjacent to each other on the sides, or the hard wood is located on both sides and the soft wood is located in the middle. The hard and soft woods of the spliced ​​lengths are adjacent to each other and placed adjacently with staggered seams, wherein the same layers are joined side by side in width and joined end to end in length longitudinally, and the longitudinal seams are joined end to end with toothed joints or flat joints.

[0012] As a further description of the above technical solution: the all-wood base material is made of multiple layers of wooden boards that are staggered and assembled together, and the thickness of the same layer of wooden boards is the same, wherein the same layer is connected side by side in width, and connected end to end longitudinally in length, and the longitudinal end to end connection seams are toothed or flat-jointed, the upper and lower adjacent layers are alternately arranged and the seams in the same direction are staggered; the upper and lower adjacent layers are staggered at 20° to 90°, and the number of layers of the multi-layer wooden boards is an odd number, and is at least 3 layers.

[0013] As a further description of the above technical solution: the solid wood veneer material and the solid wood base material are overlapped or vertically, or parallelly, or randomly placed.

[0014] As a further description of the above technical solution: the bonding process of the solid wood veneer material and the particle substrate is as follows: (1) placing the solid wood veneer material subjected to oxygenation treatment with the adhesive surface facing upward into a mold to form a solid wood veneer material on the bottom surface of the mold, and spraying a coordination solution on the adhesive surface of the solid wood veneer material on the bottom surface of the mold; (2) spraying the coordination solution on the adhesive surface of the particle substrate, and then placing the upper end of the adhesive surface of the solid wood veneer material on the bottom surface of the mold in the mold; (3) placing the solid wood veneer material on the top surface of the mold with the coordination solution on the adhesive surface of the upper end of the particle substrate to form a particle substrate veneer board to be pressed; (4) Apply positive pressure to the particle-based veneer board to be pressed in the mold with a mechanical hydraulic plate, hot press for 0.5 to 48 hours at a pressure of 1 to 20 MPa and a temperature of 60 to 170° C., demold and take out after cooling, and obtain the solid wood particle-based veneer board.

[0015] The present invention has the following beneficial effects: 1. The present invention first performs surface oxygenation treatment on the wood and then performs coordination bonding treatment, which can achieve water-resistant super-strong bonding, and the preparation process has low cost and simple operation.

[0016] 2. The solid wood veneer board material made by the method of the present invention has a bonding strength that exceeds that of traditional glued solid wood veneer boards, and its water resistance can reach the national standard Class III immersion and peeling performance standard. The bonding strength of the super water-resistant solid wood veneer board material reaches 10.97MPa. After being tested according to the national standard Class III immersion and peeling method, there is no cracking on the veneer.

[0017] 3. The wood is processed by wet method in the preparation process of the present invention, which avoids the regulation of wood moisture content in traditional preparation methods, reduces material loss in the production process, and improves the product qualification rate.

[0018] 4. The present invention achieves zero formaldehyde release of solid wood veneer panels and has many advantages such as low cost and green environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 Another structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of a solid wood substrate composed of soft and hard wood of the present invention; Figure 4 This is a schematic diagram of the structure of a solid wood substrate composed of soft and hard wood materials joined in width and length according to the present invention; Figure 5 This is a schematic diagram of the solid wood substrate assembly structure of the present invention; Figure 6 It is a structural schematic diagram of the bonding process of the solid wood veneer material and the particle base material of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described in conjunction with specific embodiments below, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The construction methods in the following embodiments, unless otherwise specified, are all conventional methods. The materials, devices, equipment, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0021] Example 1: Figure 1 As shown, a method for preparing a super water-resistant solid wood veneer board comprises the following steps: (1) Selection of solid wood substrate and solid wood facing material. Solid wood substrate includes whole wood substrate and particle substrate. Whole wood substrate is made of one or more layers of wood boards staggered and assembled. In this embodiment, 0.6 mm poplar veneer is used as solid wood facing material 1, and a layer of fast-growing poplar solid wood substrate 2 with a thickness of 1 to 3 cm and having many surface defects is pasted.

[0022] (2) Weigh 10.5 g of potassium hydroxide and prepare 500 mL of solution with deionized water.

[0023] (3) Place the above-mentioned solid wood veneer material 1 and the bonding surface of the solid wood substrate 2 into the above-mentioned solution in an oil bath pot, with the bonding surface of the solid wood substrate 2 immersed in the solution having a thickness of 1 to 3 mm, heat at 90° C. for 9 h, and then wash with pure water until the pH is neutral.

[0024] (4) Add phosphate buffer powder (PH = 6.8) and pure water to 2000 mL in a reactor. After fully dissolved, add 0.32 g of TEMPO, 22.6 g of sodium chlorite powder, and 6.447 mL of sodium hypochlorite solution with 10% effective chlorine in sequence, stir until fully dissolved, and obtain an oxygenated solution.

[0025] (5) The solid wood veneer material 1 obtained in (3) and the bonding surface of the solid wood substrate 2 are placed in an oxygenated treatment solution in an oil bath pot. The bonding surface of the solid wood substrate 2 is immersed in the solution to a thickness of 1 to 3 mm. After reacting at 60° C. for 12 h, the residual solution is washed away with pure water and ethanol.

[0026] (6) Prepare 1300 mL of an aqueous solution containing 0.43 g of Co(NO3)2·6H2O, immerse the bonding surfaces of the solid wood veneer material 1 and the solid wood substrate 2 in the aqueous solution, and take them out after soaking at room temperature for 96 h.

[0027] (7) The solid wood veneer material 1 and the solid wood base material 2 are stacked vertically with their adhesive surfaces together and placed between two steel plates. The plates are hot-pressed at 60° C. for 48 h at 20 MPa and cooled to obtain a single-layer super-strong water-resistant solid wood veneer board.

[0028] Tests show that the bonding strength of the single-layer super-strong water-resistant solid wood veneer board obtained in Example 1 reaches 1.48Mpa, and after being tested according to the national standard Class III immersion stripping method, there is no cracking on the veneer.

[0029] Example 2: Figures 2 to 4 As shown, the difference from Example 1 is that: The full wood base material is formed by several same-length wooden boards arranged side by side. The thickness of one layer of wooden boards constituting the full wood base material is the same. The same-length wood can be assembled by placing hardwood 21 and softwood 22 adjacent to each other on the side, or by placing hardwood on both sides and softwood in the middle. Hardwood refers to solid wood with higher density and harder wood, such as walnut, camphor, locust, teak, oak, basswood, beech, etc.; softwood includes red pine, white pine, larch, spruce, etc. The hard and soft woods of the spliced ​​long wood are adjacent to each other and placed adjacently with staggered seams. The same layer is joined side by side in width, and the width is joined by the joint seam 23. The length is joined end to end longitudinally, and the length is joined end to end by a toothed seam 25 or a flat seam 24. Two layers of 0.6mm forged wood veneer are used as solid wood veneer material 1 to paste the upper and lower surfaces with more defects on the hard and soft sides with a thickness of 1 to 3 cm and place the assembled solid wood base material 2 adjacent to each other.

[0030] The bonding surface of each board formed by arranging several wooden boards side by side is immersed in an oxygenated treatment solution, the thickness of the immersed bonding surface is 1 to 3 mm, the temperature is 60 to 90°C, and the immersion time is 1 to 48 hours. The oxygenated treatment solution is one of acrylic acid / ethanol, citric acid / trisodium citrate, sodium hypochlorite, hydrogen peroxide, periodic acid, periodate, acidic 2,2,6,6-tetramethylpiperidin-1-oxyl free radical (TEMPO) / sodium hypochlorite / sodium chlorite systems, and the material mass fraction in the oxygenated treatment solution is 0.1% to 30%. The bonding surface is washed clean with water; then 0.1 to 500 mmol / L of a coordination solution is sprayed on each bonding surface, and the coordination solution is a Co(NO3)2·6H2O solution with a concentration of 0.1 to 500 mmol / L. The assembled full-wood substrate is placed under a pressure of 1 to 20 MPa, with the pressure direction perpendicular to the bonding surface, at a temperature of 60 to 170° C., and hot pressed for 0.5 to 48 hours. After cooling, it is taken out, and the width and thickness are fixed to obtain the full-wood substrate.

[0031] Add phosphate buffer powder (PH=6.8) and pure water to 2000 mL in the reactor. After fully dissolving, add 0.32 g of TEMPO, 22.6 g of sodium chlorite powder, and 6.447 mL of sodium hypochlorite solution with 10% effective chlorine in sequence, stir to fully dissolve, and obtain an oxygenated treatment solution. The obtained solid wood veneer material 1 and the solid wood substrate 2 are placed in the oxygenated treatment solution. In an oil bath, the thickness of the solid wood substrate 2 is 1-3 mm. After reacting at 60°C for 12 h, the residual liquid is washed off with pure water and ethanol to remove the entire wood substrate.

[0032] Prepare 1300 mL of an aqueous solution containing 0.43 g of Co(NO3)2·6H2O, immerse the bonding surfaces of two solid wood veneer materials 1 and solid wood substrate 2 in the aqueous solution, and take them out after soaking at room temperature for 96 h.

[0033] The solid wood veneer material 1 and the solid wood base material 2 are stacked vertically with their pasted surfaces together and placed between two steel plates. The solid wood veneer material 1 is located on the upper and lower sides of the solid wood base material 2 respectively. The solid wood veneer material and the solid wood base material are stacked vertically, parallelly, or randomly. They are hot pressed at 60°C for 48 hours at 20MPa and cooled to obtain a super water-resistant solid wood veneer board.

[0034] The bonding strength of the super water-resistant solid wood veneer board obtained in Example 2 reaches 1.28 MPa.

[0035] Example 3: Figure 5 As shown, the difference from Example 2 is that the all-wood substrate is formed by multi-layer wooden boards staggered up and down, the thickness of the same layer of wooden boards is the same, and the same layer of wooden boards is formed by several wooden boards being assembled side by side, wherein the same layer is connected side by side in width, connected end to end in length, and connected end to end in length in the longitudinal direction. The longitudinal connection seams are toothed or flat, and the upper and lower adjacent layers are alternately arranged and the same-direction seams are staggered; the upper and lower adjacent layers are staggered at 20° to 90°, and the number of multi-layer wooden boards is an odd number, and at least 3 layers. The adhesive surfaces of several wooden boards in each layer of wooden boards are spliced ​​side by side in width and connected end to end, respectively, and are subjected to oxidation treatment, water washing, spraying with coordination solution, and pressurized heating to form a layer board, the thickness of the layer board is 4 to 10 mm, and at least 3 layers of the layer boards are staggered at 20° to 90° up and down, that is, the longitudinal length of the second layer of the board is staggered at 20° to 90° with the longitudinal length of the first and third layers of the board.

[0036] Then, the bonding surface of the solid wood veneer material and the 3-layer layer board with the same length, width and thickness of 1mm, which is made of ebony, cherry, walnut, oak, teak, or any other wood, or bamboo, is placed in the oxygen treatment solution. In an oil bath, the bonding surface of the layer board is immersed in a liquid with a thickness of 1 to 3mm. After reacting at 60°C for 12 hours, the residual liquid is washed away with pure water and ethanol. The oxygen treatment solution is prepared by adding phosphate buffer powder (PH=6.8) to a reactor and adding pure water to 2000 mL. After fully dissolving, 0.32 g of TEMPO, 22.6 g of sodium chlorite powder, and 6.447 mL of sodium hypochlorite solution with 10% effective chlorine are added in sequence, and stirred to fully dissolve to obtain the oxygen treatment solution.

[0037] Prepare 1300 mL of an aqueous solution containing 0.43 g of Co(NO3)2·6H2O, immerse the solid wood veneer material and the bonding surface of each layer board after oxygenation treatment in the aqueous solution, and take out after soaking at room temperature for 96 h.

[0038] The lower solid wood veneer material, the first, second, third layer material boards, and the upper solid wood veneer material are stacked vertically in turn and placed between two steel plates. They are hot pressed at 60°C for 48 hours at 20 MPa, and after cooling, super water-resistant solid wood veneer panels are obtained.

[0039] The super strong water-resistant solid wood veneer board obtained in Example 3 has a bonding strength of 10.97 MPa. After being tested according to the national standard Class III immersion stripping method, there is no cracking on the veneer.

[0040] Embodiment 4, as Figure 6 As shown, the difference from Example 1 is that: the solid wood substrate includes a particle substrate, and the particle substrate is composed of wood particles with a particle size of 1 to 5 mm; a solution is prepared by adding 10.5 g of potassium hydroxide to 500 mL of deionized water, and the wood particles are placed in the above solution, heated in an oil bath at 90°C for 9 hours, and then washed with pure water until the pH is neutral, and the wood particles are immersed in an oxygenated treatment solution at a temperature of 60 to 90°C for an immersion time of 1 to 48 hours, and the wood particles are removed and washed with water to be clean; then the water-cleaned wood particles are immersed in a 0.1 to 500 mmol / L coordination solution or the water-cleaned wood particles are sprayed with a 0.1 to 500 mmol / L coordination solution and stirred evenly, the immersed wood particles are placed in a mold, pressurized with a pressure of 1 to 20 MPa, with the pressure surface facing downward, at a temperature of 60 to 170°C, and hot pressed for 0.5 to 48 hours, and taken out after cooling to obtain a particle substrate 26.

[0041] The bonding process of solid wood veneer material and particle substrate is as follows: (1) placing the solid wood veneer material that has been oxygenated with its adhesive surface facing upward into a mold 4 to form a solid wood veneer material on the bottom of the mold, and spraying the coordination solution on the adhesive surface of the solid wood veneer material on the bottom of the mold, with a spraying amount of 0.1 to 500 mmol / L; (2) After spraying the coordination solution on the bonding surface of the particle substrate 26, the particle substrate 26 is placed on the upper end of the bonding surface of the solid wood veneer material on the bottom surface of the mold; (3) placing a mold top solid wood veneer material with a coordination solution on the adhesive surface of the upper end of the particle substrate to form a particle substrate veneer board to be pressed; (4) Using a mechanical hydraulic plate 3 to apply positive pressure to the particle-based veneer board to be pressed in the mold, hot pressing at a pressure of 1 to 20 MPa and a temperature of 60 to 170° C. for 0.5 to 48 hours, demolding and taking out after cooling, to obtain a solid wood particle-based veneer board.

[0042] The bonding strength of the solid wood particle substrate veneer board obtained in Example 4 reaches 1.32 MPa. After being tested according to the national standard Class III immersion stripping method, there is no cracking on the veneer.

[0043] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for preparing a super water-resistant solid wood veneer board, characterized in that: The steps include: (1) Preparation of solid wood substrate, including whole wood substrate and particle substrate; The full wood substrate is formed by one or more layers of wood boards being staggered and assembled up and down, the wood boards on the same layer have the same thickness, and the wood boards on the same layer are formed by one or more wood boards being assembled side by side; the bonding surface of the full wood substrate formed by several wood boards being assembled side by side or multiple wood boards being staggered and assembled up and down is immersed in an oxygenated treatment solution, the thickness of the immersed bonding surface is 1 to 3 mm, the temperature is 60 to 90° C., the immersion time is 1 to 48 hours, and the bonding surface is washed clean; then 0.1 to 500 mmol / L of a coordination solution is sprayed on the bonding surface, the assembled full wood substrate is placed under a pressure of 1 to 20 MPa, the pressure is perpendicular to the bonding surface, the temperature is 60 to 170° C., and the temperature is hot pressed for 0.5 to 48 hours, and after cooling, it is taken out, and the width and thickness are fixed to obtain the full wood substrate; The particle substrate is composed of wood particles with a particle size of 1 to 5 mm; the wood particles are immersed in an oxygenated treatment solution at a temperature of 60 to 90° C. for an immersion time of 1 to 48 hours, the wood particles are fished out, and the wood particles are washed clean with water; then the water-cleaned wood particles are immersed in a 0.1 to 500 mmol / L coordination solution or the water-cleaned wood particles are sprayed with a 0.1 to 500 mmol / L coordination solution and stirred evenly, the immersed wood particles are placed in a mold, pressurized with a pressure of 1 to 20 MPa, with the pressure surface facing downward, at a temperature of 60 to 170° C., hot pressed for 0.5 to 48 hours, and taken out after cooling to obtain a particle substrate; (2) The solid wood veneer material is a solid wood veneer material or a bamboo veneer material with a thickness of 1 to 5 mm; (3) Oxygenation treatment of the surface of solid wood veneer and all-wood substrate: immerse the adhesive surface of the solid wood veneer and all-wood substrate in the oxygenation treatment solution, with a thickness of 1 to 3 mm, a temperature of 60 to 90 ° C, an immersion time of 1 to 48 hours, and wash the adhesive surface clean with water; (4) Take out the solid wood veneer material and the whole wood substrate after oxygen treatment, and spray 0.1-500 mmol / L of coordination solution on the pasting surface; Or spray 0.1-500 mmol / L of coordination solution on the pasting surface of the particle substrate; (5) The solid wood veneer material and the whole wood substrate or particle substrate are bonded and superimposed on each other, and then hot-pressed at 1 to 20 MPa and 60 to 170° C. for 0.5 to 48 hours. After cooling, the solid wood veneer material is taken out to obtain a solid wood veneer board.

2. The method for preparing a super water-resistant solid wood veneer board according to claim 1, characterized in that: The oxygenated treatment solution is one of acrylic acid / ethanol, citric acid / trisodium citrate, sodium hypochlorite, hydrogen peroxide, periodic acid, periodate, acidic 2,2,6,6-tetramethylpiperidin-1-oxyl free radical (TEMPO) / sodium hypochlorite / sodium chlorite systems, and the mass fraction of the material in the oxygenated treatment solution is 0.1% to 30%.

3. The method for preparing a super water-resistant solid wood veneer board according to claim 1, characterized in that: The coordination solution is a cobalt ion solution with a concentration of 0.1-500 mmol / L, and the cobalt ion solution can be any one of cobalt chloride, cobalt nitrate and cobalt sulfate.

4. The method for preparing a super water-resistant solid wood veneer board according to claim 1, characterized in that: The amount of the coordination solution sprayed on the pasting surface is 0.1 to 3 L / m 2 .

5. The method for preparing a super water-resistant solid wood veneer board according to claim 1, characterized in that: The material of the solid wood facing material is ebony, cherry, walnut, oak, teak, or any other wood, or bamboo.

6. The method for preparing a super water-resistant solid wood veneer board according to claim 1, characterized in that: The described one layer of the full wood substrate is a layer of wood boards with the same thickness, and the same length of hard and soft wood is placed adjacent to each other on the sides or the hard wood is located on both sides and the soft wood is located in the middle. The long hard and soft woods are spliced ​​adjacent to each other and placed adjacently with staggered seams, wherein the same layer is joined side by side in width and joined end to end in length longitudinally, and the longitudinal end to end joint length seams are toothed or flatly joined.

7. The method for preparing a super water-resistant solid wood veneer board according to claim 1, characterized in that: The all-wood substrate is formed by multi-layer wooden boards staggered and assembled, and the thickness of the same layer of wooden boards is the same, wherein the same layer is connected side by side in width, and connected end to end in length longitudinally, and the longitudinal end to end connection seams are toothed or flat-jointed, and the upper and lower adjacent layers are alternately arranged and the seams in the same direction are staggered; the upper and lower adjacent layers are staggered at 20° to 90°, and the number of layers of the multi-layer wooden boards is an odd number, and is at least 3 layers.

8. The method for preparing a super water-resistant solid wood veneer board according to claim 1, characterized in that: The solid wood facing material and the solid wood base material are overlapped vertically, parallelly or randomly.

9. The method for preparing a super water-resistant solid wood veneer board according to claim 1, characterized in that: The bonding process of the solid wood veneer material and the particle base material is as follows: (1) placing the solid wood veneer material subjected to oxygenation treatment with the adhesive surface facing upward into a mold to form the solid wood veneer material on the bottom surface of the mold, and spraying the coordination solution on the adhesive surface of the solid wood veneer material on the bottom surface of the mold; (2) After spraying the coordination solution on the bonding surface of the particle substrate, the particle substrate is placed on the upper end of the bonding surface of the solid wood veneer material on the bottom surface of the mold; (3) placing a mold top solid wood veneer material with a coordination solution on the adhesive surface of the upper end of the particle substrate to form a particle substrate veneer board to be pressed; (4) Apply positive pressure to the particle-based veneer board to be pressed in the mold with a mechanical hydraulic plate, hot press for 0.5 to 48 hours at a pressure of 1 to 20 MPa and a temperature of 60 to 170° C., demold and take out after cooling, and obtain the solid wood particle-based veneer board.

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