Lignan solid wood composite material and preparation method thereof

Abstract

The invention discloses a lignite solid wood composite material and a preparation method thereof. The lignite solid wood composite material sequentially comprises a back plate layer, a core plate layer and a surface layer from bottom to top, the surface layer is obtained by combining surface layer wood with a resin solution; the back plate layer, the core plate layer and the surface layer are bonded and fixed in a hot pressing or cold pressing mode. The problems that an existing composite material is poor in water resistance, low in bonding strength, not environmentally friendly and the like are solved, and meanwhile the natural aesthetic feeling of wood and the excellent performance of resin are fully exerted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building decoration materials, in particular to a wood pitch solid wood composite material and a preparation method thereof, which can be used for wallboards, wall bricks, floorboards, floor tiles and the like. BACKGROUND

[0002] In the field of building decoration, the selection of wallboards, floor tiles and the like is of great importance. Traditional solid wood floorboards have natural texture and aesthetic appearance, but have problems such as easy deformation, poor water resistance, weak stain resistance and the like. Especially in a humid environment, the solid wood is prone to swelling, mildewing and rotting due to moisture, which affects the service life and decoration effect. Floor tiles are easy to clean and maintain, have excellent fireproof, waterproof and anticorrosive properties, are environmentally friendly, have long service life, good stability and various styles. However, floor tiles also have problems such as less comfortable use than floorboards, poor heat insulation, high construction difficulty, easy sliding and the like, and some floor tiles also have disadvantages such as radioactive pollution, high cost, complex paving and cumbersome construction. Some existing composite materials have improved performance to some extent, but still have problems such as poor water resistance, low bonding strength and environmental pollution. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application aims to provide a wood pitch solid wood composite material and a preparation method thereof, so as to solve the problems of poor water resistance, low bonding strength and environmental pollution of existing composite materials, and fully exert the natural beauty of wood and the excellent performance of resin.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] A wood pitch solid wood composite material comprises, from bottom to top, a backboard layer, a core board layer and a surface layer; the surface layer is obtained by combining surface wood with resin; and the backboard layer, the core board layer and the surface layer are fixed by hot pressing or cold pressing.

[0006] Further, the thickness of the backboard layer is 2-3 mm, and poplar boards or pine boards are selected; the thickness of the core board layer is 9-10 mm, and spruce boards or poplar boards are used; the surface wood uses oak boards, walnut boards or eucalyptus boards, and the thickness is 3-6 mm.

[0007] Further, the resin solution comprises epoxy resin, and one or more of a curing agent, a toughening agent, a flame retardant, an antibacterial agent and pearl powder.

[0008] Further, the surface wood uses waste wood boards, which are combined with resin after removing defects on the board surface by shaping and gouging.

[0009] Further, the surface of the surface layer is covered with a surface treatment layer, which is specifically a water-based paint coating layer, and the thickness is 0.1-0.3mm.

[0010] Further, when the lignin solid wood composite material is used for wallboard or floor, the four sides of the lignin solid wood composite material are provided with a locking connection structure, and the opposite two sides are respectively a tongue and a groove that match each other, the connection of two lignin solid wood composite materials is completed by tenoning the tongue of one lignin solid wood composite material with the groove of another lignin solid wood composite material; when the lignin solid wood composite material is used for wall brick or wallboard, the four sides of the lignin solid wood composite material are provided with a slot, and the connection of two lignin solid wood composite materials is completed by splicing the two lignin solid wood composite materials and inserting a plug into the two slots opposite to each other between the two lignin solid wood composite materials.

[0011] Further, when the lignin solid wood composite material is used for floor tile, the top surface of the surface layer has an anti-skid structure.

[0012] The application also provides a preparation method of the lignin solid wood composite material, which specifically comprises the following steps:

[0013] S1, wood pretreatment: the surface layer wood of the back plate layer, the core plate layer and the surface layer is processed to meet the design size requirement, and then the wood is dried to control the moisture content of the wood at 6%-12%; the dried wood is subjected to defatting treatment to remove the oil components in the wood;

[0014] S2, resin solution preparation: one or more of the epoxy resin, the curing agent, the toughening agent, the flame retardant, the antibacterial agent and the pearl powder are added to a stirring device to fully mix and evenly distribute the components to obtain a resin solution;

[0015] S3, the surface layer is prepared by any of the following ways:

[0016] (1) a designed pattern is engraved on the top surface of the surface layer wood in advance, a groove constituting the pattern is formed on the top surface of the surface layer wood, the prepared resin solution is poured into the groove and is cured;

[0017] (2) the surface layer wood is placed in a prepared mold, the prepared resin solution is uniformly poured into the mold, and the surface layer wood is taken out after sufficient drying, and the bubbles are discharged in time during the pouring of the resin solution;

[0018] S4, the surface layer prepared in step S3 is adhered to the core plate layer and the back plate layer by using an adhesive, and is bonded and fixed by hot pressing or cold pressing to obtain the lignin solid wood composite material.

[0019] Further, the adhesive is an environmentally friendly two-component polyurethane adhesive.

[0020] Further, the above-mentioned method further comprises the process of coating the surface of the surface layer with a surface treatment layer: first, coating a layer of resin to seal the surface layer, and then coating the water-based paint on the surface of the surface layer;

[0021] It also includes an anti-slip treatment step; when the wood-plastic solid wood composite material is used for floor tiles, the anti-slip treatment is carried out before the surface treatment layer is cured, and the anti-slip texture is formed on the top surface of the surface treatment layer by using mold pressing; when the mold is pressed, the mold with anti-slip texture is pressed on the top surface of the surface treatment layer, and then the curing treatment is carried out to make the anti-slip texture adhere to the surface of the floor tile.

[0022] The beneficial effects of the present application are:

[0023] 1. The use of the present application can improve the performance of the product:

[0024] Enhanced stability: through the multi-layer composite structure, the dimensional stability of the product is effectively improved, the deformation risk of wood due to humidity and temperature change is reduced, and the service life of the product is prolonged.

[0025] Improved water resistance: the water resistance of the resin and the protective effect of the surface treatment layer make the wood-plastic solid wood composite material of the present application have good water resistance, which can be applied in environments with high humidity, such as bathrooms, kitchens, basements, etc.

[0026] Enhanced wear resistance and stain resistance: the setting of the surface treatment layer makes the surface of the wood-plastic solid wood composite material have high hardness and wear resistance, which can effectively resist friction and scratching in daily use. At the same time, the smoothness and stain resistance of the surface of the wood-plastic solid wood composite material are also improved, stains are not easy to adhere, and cleaning is more convenient.

[0027] Antibacterial function: the product can have antibacterial performance by adding antibacterial agents in the resin solution, which can inhibit the growth and reproduction of bacteria, mold and other microorganisms, reduce odor and bacterial growth, and provide a healthier use environment for users.

[0028] 2. The wood-plastic solid wood composite material of the present application is more environmentally friendly:

[0029] Low or no formaldehyde release: the use of environmentally friendly epoxy resin and two-component polyurethane adhesive can strictly control the formaldehyde release during production, and the formaldehyde release of the product meets the national standard, even reaching the higher environmental protection standard of E0 level or no formaldehyde, ensuring the health of users.

[0030] 3. The wood-plastic solid wood composite material of the present application can be used for walls and floors, special environments such as bathrooms and kitchens, and can also be used for background walls.

[0031] 4、The wood resin solid wood composite material can be realized by using waste wood, and the utilization rate of wood is improved.

[0032] 5、The wood resin solid wood composite material has high bonding strength of the composite structure of each layer, and is not easy to delaminate and fall off. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A composite structure diagram of the wood resin solid wood composite material in the embodiment 1 of the present application is shown.

[0034] Figure 2 A schematic diagram of one of the combination modes of the surface layer wood and the resin in the embodiment 1 of the present application is shown. DETAILED DESCRIPTION

[0035] The present application will be further described below in combination with the drawings, and it should be noted that the present embodiment is based on the technical solution, and detailed implementation and specific operation process are given, but the protection scope of the present application is not limited to the present embodiment.

[0036] Embodiment 1

[0037] The wood resin solid wood composite material comprises a back plate layer 1, a core plate layer 2 and a surface layer 3 from bottom to top.

[0038] The thickness of the back plate layer 1 is 2-3 mm, and the back plate layer 1 mainly plays a supporting and stabilizing role, and specifically can be selected from poplar plate or pine plate.

[0039] The thickness of the core plate layer 2 is 9-10 mm, and specifically can be selected from spruce plate or poplar plate and other softwood plates.

[0040] The surface layer is obtained by combining the surface layer wood and the resin solution, and the thickness is 3-6 mm. The surface layer wood can be selected from oak plate, walnut plate, eucalyptus plate and the like.

[0041] The back plate layer, the core plate layer and the surface layer are bonded and fixed by hot pressing or cold pressing.

[0042] In the present embodiment, the surface layer wood can be waste wood plate, and the defects on the plate surface are removed by modeling and patching before being combined with the resin.

[0043] In the wood resin solid wood composite material, the surface layer is the main decorative layer, and exhibits the natural texture and texture of the wood and the gorgeous pattern after the wood and the resin and pearl powder are mixed.

[0044] In the present embodiment, the surface of the surface layer is covered with a surface treatment layer, and the surface treatment layer is specifically a water-based paint coating layer, and the thickness is 0.1-0.3 mm. The surface treatment layer has the functions of wear resistance, stain resistance, waterproofness, antibacterial property and the like, can effectively protect the surface layer of the material, and prolong the service life of the product.

[0045] In the embodiment, the resin is specifically epoxy resin. The epoxy resin can be adjusted to various colors according to requirements, which not only can change the single wood tone, easy cracking and deformation and other defects, but also can effectively improve the physical and mechanical properties of the wood board, better show the natural texture of wood, and give the board a modern breath.

[0046] In the embodiment, when the lignin wood composite material is used for wallboard or floor, the four sides of the lignin wood composite material are provided with a locking connection structure, and the opposite sides are respectively a tongue and a groove that match each other. The connection of two lignin wood composite materials is completed by tenoning the tongue of one lignin wood composite material with the groove of another lignin wood composite material. When the lignin wood composite material is used for wall brick or wallboard, the four sides of the lignin wood composite material are provided with a slot (such as 4mm long*5mm wide), and the connection of two lignin wood composite materials is completed by splicing the two lignin wood composite materials and inserting a plug (such as 7mm long*4.5mm wide) into the two slots opposite to each other.

[0047] In this way, through the above structure, the splicing of multiple lignin wood composite materials can be facilitated, and the splicing efficiency, splicing accuracy and firmness can be improved.

[0048] In actual application, after the adjacent lignin wood composite materials are spliced, an appropriate amount of resin adhesive can be applied at the connection to further enhance the connection strength.

[0049] In the embodiment, when the lignin wood composite material is used for floor tile, the top surface of the surface layer has an anti-skid structure, such as concave-convex texture, anti-skid particles and the like. The depth of the concave-convex texture is generally 0.5-1mm, the width is 1-2mm, and the interval is 2-3mm, which can be adjusted according to actual use requirements. The anti-skid particles can be resin particles or rubber particles, and the particle size is 0.5-1mm. The anti-skid particles are fixed on the surface of the surface layer by bonding or injection molding, which effectively improves the anti-skid performance of the floor tile and ensures the safety in use.

[0050] Embodiment 2

[0051] The embodiment provides a preparation method of the lignin wood composite material of embodiment 1, specifically including the following steps:

[0052] S1, wood pretreatment: the back layer 1, core layer 2 and surface layer 3 of the surface layer wood are cut, planed and processed to meet the design size requirements. Then the wood is dried by kiln drying or vacuum drying method, and the moisture content of the wood is controlled at 6%-12%. The dried wood is subjected to degreasing treatment to remove the oil components in the wood. The degreasing treatment can be carried out by chemical agent immersion or high temperature cooking method, and the treatment time is determined according to the type and thickness of the wood, generally 2-4 hours.

[0053] S2, resin solution preparation: according to the formula requirements, the resin, curing agent, pearl powder and other ingredients are accurately weighed and added to the stirring equipment, and stirred at 300-500 rpm for 10-15 minutes at room temperature to make the ingredients fully mixed and uniform. During the stirring process, observe the state of the resin to ensure that there is no lumping, precipitation and other phenomena.

[0054] S3, making surface layer:

[0055] As one of the embodiments, as shown in Figure 2 the top surface of the surface layer wood 31 is engraved with a designed pattern 32, and the resin solution prepared is poured into the groove formed by the pattern 32 and cured.

[0056] As another embodiment, the surface layer wood is placed in a pre-prepared mold, and the prepared resin solution is uniformly poured into the mold. After drying, the resin solution is taken out from the mold. Pay attention to timely discharge of air bubbles during pouring of the resin solution.

[0057] As a personalized production scheme, some personal items, such as collections and specimens, can be placed in the groove or mold and wrapped in the surface layer wood by the resin.

[0058] S4, the surface layer wood, the core layer wood and the back layer wood are bonded and fixed by hot pressing or cold pressing to obtain a wood resin solid wood composite material.

[0059] In this embodiment, hot pressing is used, the hot pressing temperature is 50-80℃, the pressure is adjusted according to the size of the plate, and the hot pressing time is 5-10 minutes. During the hot pressing process, ensure that the pressure is uniformly distributed, so that the three layers are tightly bonded, and the surface layer and the core layer and the back layer are firmly bonded.

[0060] Further, when the wood resin solid wood composite material is used for wallboard or floor, further adopt numerical control processing equipment to process the lock connection structure on the four sides of the wood resin solid wood composite material, and the machining precision is controlled within ±0.1mm. After processing, the lock connection structure is polished to remove burrs and corners to ensure smoothness of splicing.

[0061] When the lignin solid wood composite material is used for wall bricks or floor tiles, a numerical control processing equipment is further used to process straight mouth slots on four sides of the lignin solid wood composite material, and the straight mouth slots are accurately cut according to the design size, and then a matched plug is processed by sawing to ensure subsequent paving convenience.

[0062] In the embodiment, the process of coating the surface of the surface layer with a treatment layer is also included. First, an epoxy resin is coated, and then a water-based paint is coated on the surface of the surface layer by spraying, rolling or pouring. Specifically, the surface layer is first closed treated with an epoxy resin to prevent oil in the wood from seeping out and affecting the quality of the paint film. The coating is performed 2 to 3 times, with an interval of more than 5 hours each time, and after each coating is dry, the surface is sanded to enhance the adhesion and filling. Finally, 2 to 3 coats of water-based paint are applied, with an interval of more than 5 hours between each coat, and after drying, the surface is sanded to obtain a smooth and delicate surface.

[0063] In the embodiment, the anti-slip treatment step is also included. When the lignin solid wood composite material is used for floor tiles, the anti-slip treatment is performed before the surface treatment layer is cured. The anti-slip texture is formed on the top surface of the surface treatment layer by using a mold pressing method. When the mold is pressed, the mold with the anti-slip texture is pressed on the top surface of the surface treatment layer, and under certain pressure and temperature, the corresponding texture is formed on the surface of the floor tile, and then the curing treatment is performed to make the anti-slip texture adhere to the surface of the floor tile.

[0064] In the embodiment, the prepared lignin solid wood composite material is further subjected to comprehensive quality detection, including appearance quality, size accuracy, bonding strength, water resistance, wear resistance, anti-slip performance, antibacterial performance, formaldehyde release amount, etc. The appearance quality detection mainly checks whether there are cracks, bubbles, scratches, color difference and other defects on the surface of the product; the size accuracy detection measures the length, width and thickness of the product using measuring tools to ensure that the design requirements are met; the bonding strength detection tests the bonding strength by tensile test or peeling test; the water resistance detection soaks the product in water for a certain period of time to observe whether the product deforms, delaminates, cracks, etc.; the wear resistance detection tests the wear of the product surface using a wear tester and records the wear amount and the surface state after wear; the anti-slip performance detection measures the friction coefficient of the product surface using an anti-slip tester to evaluate the anti-slip effect; the antibacterial performance detection uses a microbial detection method to detect the inhibition rate of the product on common bacteria and mold. The formaldehyde release amount is detected by a formaldehyde detection instrument to meet environmental protection requirements. Only products that pass all quality tests can enter the packaging process.

[0065] After the detection is completed, the lignin solid wood composite material that passes the detection is packaged using cartons or plastic film to ensure that the product is not damaged during transportation and storage. The packaged products are stored in the warehouse according to specifications and models, waiting for shipment.

[0066] Embodiment 3

[0067] This embodiment provides an application example of embodiment 2 for making a composite floor.

[0068] 1. Material preparation

[0069] Surface layer wood: high-quality oak surface plate with a thickness of 4 mm is selected. The top surface of the surface layer wood is pre-engraved with a pattern.

[0070] Resin solution: epoxy resin (E-45), curing agent ethylenediamine, toughening agent carboxyl-terminated butyl nitrile rubber (CTBN), flame retardant aluminum hydroxide, wood fiber, antibacterial agent nano-silver ion antibacterial agent, and pearl powder.

[0071] Core layer: select pine board material, process into a wood board with a thickness of 9.3 mm, a length of 430 mm, and a width of 50 mm, with a moisture content of 6-8%.

[0072] Back layer: select poplar rotary-cut board material, process into a back plate with a thickness of 2 mm, a length of 1930 mm, and a width of 430 mm, with a moisture content of 6-8%.

[0073] 2. Resin preparation

[0074] According to the proportions of 100 parts of epoxy resin, 15 parts of ethylenediamine, 10 parts of CTBN, 15 parts of aluminum hydroxide, 1 part of nano-silver ion antibacterial agent, 30 parts of wood fiber, and an appropriate amount of pearl powder (the amount of pearl powder can be determined according to color), accurately weigh each component. Add the epoxy resin to the stirring equipment and stir at a speed of 400 revolutions per minute at room temperature for 5 minutes. Add ethylenediamine, CTBN, aluminum hydroxide, nano-silver ion antibacterial agent, wood fiber, and pearl powder in sequence, and continue stirring for 15 minutes to fully mix and evenly distribute the components.

[0075] 3. The resin solution is poured into the patterned grooves on the surface of the surface layer wood. Pour the prepared resin solution into the patterned grooves on the surface of the surface layer wood. After drying, the composite floor is placed into the next process after being fully dried.

[0076] 4. Composite molding: After the surface layer wood, core layer, and back layer are bonded by the environmentally friendly two-component polyurethane adhesive (solvent-free two-component polyurethane adhesive), they are placed in a hot press. The hot pressing temperature is set to 80°C, the pressure is 1.5 MPa, and the hot pressing time is 8 minutes. After hot pressing, the composite floor is taken out and cooled to room temperature.

[0077] 5. Mortise and tenon processing: use numerical control processing equipment to process mortise and tenon on the four sides of the composite floor.

[0078] 6. Surface treatment layer preparation: use the rolling method to apply water-based paint to the top surface of the surface layer. Specifically, use a four-base two-face coating process with a coating thickness of 0.2 mm.

[0079] 7. Quality inspection

[0080] Appearance quality inspection: The surface of the composite floor is smooth, without defects such as cracks, bubbles, scratches, color difference, etc.

[0081] Dimensional accuracy inspection: The length deviation is within ±0.5 mm, the width deviation is within ±0.3 mm, and the thickness deviation is within ±0.2 mm.

[0082] Bonding strength inspection: The tensile bonding strength between the backboard layer, the core layer and the surface layer reaches 2.5 MPa, and the peeling strength between the surface layer and the surface treatment layer reaches 3.0 N / mm.

[0083] Water resistance inspection: After soaking the composite floor in water for 48 hours, there is no deformation, delamination, cracking, etc., and the water content changes within 1%.

[0084] Wear resistance inspection: After 5000 rotations of wear resistance test, the surface wear amount is less than 0.05 g / cm 2 .

[0085] Anti-slip performance inspection: The friction coefficient reaches 0.65, meeting the anti-slip requirements.

[0086] Antibacterial performance inspection: The inhibition rate of Escherichia coli and Staphylococcus aureus reaches more than 99%.

[0087] Environmental protection inspection: Formaldehyde emission reaches no formaldehyde

[0088] 8. Packaging and storage: The composite floor that passes the inspection is packaged with cartons, 10 pieces per carton. The packaged products are stored in the warehouse, waiting for shipment.

[0089] Example 4

[0090] This example aims to provide another implementation, only retaining the surface layer, and omitting the backboard layer and the core layer.

[0091] 1. Material preparation

[0092] Surface layer wood: Select oak board with a moisture content of 11%, process into wood boards with a thickness of 20 mm, a length of 600 mm, and a natural width.

[0093] Resin: epoxy resin, curing agent hexamethylene tetramine, toughening agent styrene-butadiene rubber (SBR), flame retardant magnesium hydroxide, antibacterial agent organic antibacterial agent (triclosan), calcium carbonate and pearl powder.

[0094] 2. Resin preparation

[0095] Epoxy resin 100 parts, methenamine 12 parts, SBR 8 parts, magnesium hydroxide 18 parts, triclosan 1.5 parts, calcium carbonate 40 parts, and pearl powder in an appropriate amount by weight. The epoxy resin is added to a stirring device and stirred at a speed of 350 revolutions per minute for 5 minutes at room temperature. The methenamine, SBR, magnesium hydroxide, triclosan, calcium carbonate, and pearl powder are then added in sequence, and stirring is continued for 15 minutes to ensure that the components are fully mixed and uniform.

[0096] 3. Composite molding

[0097] The surface layer of wood is placed in the previously prepared mold, and the prepared resin solution is uniformly poured into the mold. Bubbles are promptly removed if present. After sufficient drying, the mold is removed, and the four edges are sawn to size.

[0098] 4. Surface treatment layer preparation

[0099] The epoxy resin is first used to seal the rule-shaped material obtained in step 3. Then, the water-based paint is brushed 2-3 times. After drying, polishing is performed.

[0100] 5. Quality detection

[0101] Appearance quality detection: The composite wall brick surface is flat, the texture is clear, and there are no obvious defects. Dimensional accuracy detection: The length deviation is within ±0.4 mm, the width deviation is within ±0.3 mm, and the thickness deviation is within ±0.2 mm.

[0102] For those skilled in the art, various corresponding changes and modifications can be made based on the above technical solutions and concepts, and all such changes and modifications should be included within the scope of protection of the claims of the present application.

Claims

1. A lignin solid wood composite, characterized in that, From bottom to top, the wood-plastic solid wood composite material comprises a back plate layer, a core plate layer and a surface layer; the surface layer is obtained by combining surface wood with a resin solution; the back plate layer, the core plate layer and the surface layer are bonded and fixed by hot pressing or cold pressing.

2. The ligno-solid wood composite according to claim 1, characterized in that The thickness of the back plate layer is 2-3mm, and poplar plate or pine plate is selected; the thickness of the core plate layer is 9-10mm, and spruce plate or poplar plate is selected; the surface wood is oak plate, walnut plate or eucalyptus plate, and the thickness is 3-6mm.

3. The ligno-solid wood composite according to claim 1, characterized in that The resin solution comprises epoxy resin, and one or more of a curing agent, a toughening agent, a flame retardant, an antibacterial agent and pearl powder.

4. The ligno-solid wood composite according to claim 1, characterized in that The surface wood is an old wood plate, and after the defects on the surface of the wood plate are removed by modeling and patching, the wood plate is combined with the resin.

5. The ligno-solid wood composite of claim 1, wherein, The surface of the surface layer is covered with a surface treatment layer, and the surface treatment layer is a water-based paint coating layer with a thickness of 0.1-0.3mm.

6. The ligno-solid wood composite of claim 1, wherein, When the wood-plastic solid wood composite material is used for a wall plate or a floor, the four sides of the wood-plastic solid wood composite material are provided with a locking connection structure, and the opposite two sides are respectively a tongue and a groove that match each other, the connection of two wood-plastic solid wood composite materials is completed by tenoning the tongue of one wood-plastic solid wood composite material with the groove of the other wood-plastic solid wood composite material; when the wood-plastic solid wood composite material is used for a wall brick or a wall plate, the four sides of the wood-plastic solid wood composite material are provided with a slot, and the connection of two wood-plastic solid wood composite materials is completed by splicing the two wood-plastic solid wood composite materials and inserting a plug into the two slots at the opposite ends of the two wood-plastic solid wood composite materials.

7. The ligno-solid wood composite of claim 1, wherein, When the wood-plastic solid wood composite material is used for a floor tile, the top surface of the surface layer has an anti-slip structure.

8. A method of producing a ligno-wood composite material according to any one of claims 1 to 7, characterized in that Specifically comprising the following steps: S1, wood pretreatment: process the back plate layer, the core plate layer and the surface wood of the surface layer to meet the design size requirements, and then dry the wood to control the moisture content of the wood to be 6%-12%; the dried wood is subjected to degreasing treatment to remove the oil components in the wood; S2, resin solution preparation: add epoxy resin, and one or more of a curing agent, a toughening agent, a flame retardant, an antibacterial agent and pearl powder into a stirring device to fully mix and evenly distribute the components to obtain a resin solution; S3, the surface layer is made by any of the following methods: (1) pre-engrave the designed pattern on the top surface of the surface wood, form the grooves constituting the pattern on the top surface of the surface wood, and pour the prepared resin solution into the grooves and solidify; (2) place the surface wood in a pre-prepared mold, evenly pour the prepared resin solution into the mold, and then take out the surface wood after sufficient drying, and pay attention to timely discharge air bubbles during pouring of the resin solution; S4, the surface layer obtained in step S3 is adhered to the core plate layer and the back plate layer by using an adhesive, and then bonded and fixed by hot pressing or cold pressing to obtain a wood-plastic solid wood composite material.

9. The production method according to claim 8, characterized by, The adhesive is an environmentally friendly two-component polyurethane adhesive.

10. The method of claim 9, wherein, Further comprising a process of coating a surface treatment layer on the surface of the surface layer: first, coat a layer of epoxy resin on the surface layer for sealing treatment, and then coat water-based paint on the surface of the surface layer; Further comprising an anti-slip treatment step; When the wood-plastic solid wood composite material is used for floor tiles, the anti-skid treatment is carried out before the surface treatment layer is cured, and the anti-skid texture is formed on the top surface of the surface treatment layer by means of die pressing; when the die is pressed, the die with the anti-skid texture is pressed on the top surface of the surface treatment layer, and then the curing treatment is carried out, so that the anti-skid texture is attached to the surface of the floor tile.

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