Wood-based basalt fiber composite material and preparation method thereof

Abstract

The invention discloses a wood-based basalt fiber composite material and a preparation method thereof, and belongs to the technical field of artificial boards, the wood-based basalt fiber composite material comprises a wood-based layer and a basalt fiber layer; the basalt fiber layer is made of modified basalt fibers; the modified basalt fiber is prepared by carrying out at least one of acid treatment, alkali treatment and plasma treatment on the surface of the basalt fiber. By utilizing the characteristic of high mechanical strength of the basalt fiber, the surface of the basalt fiber is modified by adopting methods such as acid treatment, alkali treatment and plasma treatment, so that the interface bonding performance of the basalt fiber can be improved, and then the basalt fiber is compounded with a wood veneer, so that the wood-based basalt fiber composite material with higher bonding strength can be prepared.

Description

Technical Field

[0001] The invention relates to the technical field of artificial boards, in particular to a wood-based basalt fiber composite material and a preparation method thereof. Background Art

[0002] Plywood has the highest share among man-made boards due to its wide range of applications and relatively low production process difficulty. At present, plywood has been widely used in decoration, home building materials, and wooden building materials, but traditional plywood has problems such as low mechanical strength and poor flame retardancy, which need to be solved urgently.

[0003] Basalt fiber (BF) uses basalt ore as raw material. After the basalt ore is melted at 1450-1500℃, it is drawn into continuous fiber. Carbon fiber has excellent performance, but it is expensive, while glass fiber is cheaper and will cause environmental pollution during the production process. Therefore, high-performance natural fibers with green and environmental protection have a good development opportunity. Basalt fiber does not add chemical additives during the processing process and is considered to be one of the environmentally friendly materials. Basalt fiber has been used in many fields such as building materials industry, automobile industry, metallurgical industry, etc. due to its excellent mechanical properties, thermal stability and chemical stability. Therefore, it is particularly important to select basalt fiber cloth with good performance, high cost performance and green environmental protection for the research of fiber reinforced plywood.

[0004] In addition, fiber-reinforced materials have been widely studied by domestic scholars, but fiber-reinforced wood materials are less. Since the surface of basalt fiber cloth is smooth and the interface bonding effect is poor, it is necessary to solve the problem of organic and inorganic interface bonding. Most of the research is to pre-treat the surface of basalt fiber to make its surface rough, thereby increasing the bonding strength with the resin. Summary of the invention

[0005] The object of the present invention is to provide a wood-based basalt fiber composite material to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0007] A wood-based basalt fiber composite material comprises a wood-based layer and a basalt fiber layer; the basalt fiber layer is made of modified basalt fiber; the modified basalt fiber is made by subjecting the surface of the basalt fiber to at least one of acid treatment, alkali treatment and plasma treatment.

[0008] Preferably, the preparation method of the modified basalt fiber comprises the following steps:

[0009] The basalt fiber is baked and then the surface thereof is polished to obtain pretreated basalt fiber;

[0010] The surface of the pretreated basalt fiber is treated by at least one of acid treatment, alkali treatment and plasma treatment to obtain the modified basalt fiber.

[0011] Preferably, the baking temperature is 180 - 220 °C.

[0012] Preferably, the acid treatment method is: placing the pretreated basalt fiber in an acid treatment solution and heating it to 60 - 80 °C for impregnation treatment.

[0013] Preferably, the acid treatment solution includes hydrochloric acid, sodium dodecyl sulfate and ethylenediaminetetraacetic acid. Among them, the mass percentage concentration of hydrochloric acid is 1% - 5%, the mass percentage concentration of sodium dodecyl sulfate is 0.2% - 0.5%, and the mass percentage concentration of ethylenediaminetetraacetic acid is 0.1% - 0.3%.

[0014] Preferably, the alkali treatment method is: placing the pretreated basalt fiber in an alkali treatment solution and heating it to 60 - 80 °C for impregnation treatment.

[0015] Preferably, the alkali treatment solution includes sodium hydroxide, sodium dodecyl sulfate and titanium dioxide. Among them, the mass percentage concentration of sodium hydroxide is 1% - 5%, the mass percentage concentration of sodium dodecyl sulfate is 0.2% - 0.5%, and the mass percentage concentration of titanium dioxide is 0.1% - 0.5%.

[0016] Preferably, the plasma treatment method is: placing the pretreated basalt fiber in a plasma device for treatment; the discharge power of the plasma device is 150 - 200 W, and the treatment time is 3 - 6 min.

[0017] Another object of the present invention is to provide a preparation method of the above-mentioned wood-based basalt fiber composite material, which includes the following steps:

[0018] Put the wood veneer into a drying treatment at a temperature of 50 - 70 °C until the moisture content is 5% - 10% to obtain a wood base layer;

[0019] Immerse the modified basalt fiber in a phenolic resin adhesive, and then perform a drying treatment to obtain a basalt fiber layer;

[0020] Composite the wood base layer and the basalt fiber layer, and perform a hot pressing treatment to obtain the wood-based basalt fiber composite material.

[0021] Among them, the wood veneer includes but is not limited to eucalyptus veneer; sodium dodecyl sulfate can be replaced with other surfactants; ethylenediaminetetraacetic acid

[0022] Preferably, the pressure for hot pressing treatment is 1 - 1.2 MPa, the temperature is 100 - 120 °C, and the time is 6 - 12 min.

[0023] The present invention utilizes the characteristics of high mechanical strength of basalt fibers, and modifies the surface of basalt fibers by methods such as acid treatment, alkali treatment, and plasma treatment, which can improve their interfacial bonding performance. Then, by compounding them with wood veneers, a wood-based basalt fiber composite material with high bonding strength can be prepared. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the blank assembly of the wood-based basalt fiber composite material provided by the embodiment of the present invention; in the figure, 1 - wood layer, 2 - basalt fiber layer. Detailed Embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] In an embodiment of the present invention, a wood-based basalt fiber composite material is provided, including a wood layer and a basalt fiber layer; the basalt fiber layer is made of modified basalt fibers; the modified basalt fibers are obtained by performing at least one of acid treatment, alkali treatment, and plasma treatment on the surface of basalt fibers.

[0027] Specifically, the preparation method of the above-mentioned wood-based basalt fiber composite material includes the following steps:

[0028] S1. Bake the basalt fibers to remove the sizing agent, and then polish their surfaces, which can initially remove larger particle impurities and part of the surface layer substances on the fiber surface, increase the initial surface roughness of the fiber, and obtain pretreated basalt fibers; wherein, the baking temperature is 180 - 220 °C.

[0029] S2. Treat the surface of the pretreated basalt fibers by using at least one of acid treatment, alkali treatment, and plasma treatment to obtain modified basalt fibers;

[0030] Specifically, the acid treatment method is as follows: Place the pretreated basalt fibers in an acid treatment solution and heat to 60 - 80 °C for impregnation treatment. The acid treatment solution includes hydrochloric acid, sodium dodecyl sulfate (SDS), and ethylenediaminetetraacetic acid (EDTA). Among them, the mass percentage concentration of hydrochloric acid is 1% - 5%, the mass percentage concentration of sodium dodecyl sulfate is 0.2% - 0.5%, and the mass percentage concentration of ethylenediaminetetraacetic acid is 0.1% - 0.3%. It should be noted that the addition of sodium dodecyl sulfate can make the acid react more evenly with the surface and interior of the fibers, avoiding local over-treatment, and it can also be replaced by other surfactants with the same function. The addition of ethylenediaminetetraacetic acid helps to better remove metal impurities in the fibers, and it can also be replaced by other complexing agents with the same function.

[0031] The alkali treatment method is as follows: Place the pretreated basalt fibers in an alkali treatment solution and heat to 60 - 80 °C for impregnation treatment. The alkali treatment solution includes sodium hydroxide, sodium dodecyl sulfate, and titanium dioxide. Among them, the mass percentage concentration of sodium hydroxide is 1% - 5%, the mass percentage concentration of sodium dodecyl sulfate is 0.2% - 0.5%, and the mass percentage concentration of titanium dioxide is 0.1% - 0.5%. It should be noted that the addition of sodium dodecyl sulfate can make the alkali react more evenly with the surface and interior of the fibers, avoiding local over-treatment, and it can also be replaced by other surfactants with the same function. At the same time, adding an appropriate amount of titanium dioxide can reduce the activation energy of the reaction between the alkali and the basalt fibers, make the active functional groups generated on the fiber surface more regular, and improve the bonding ability between the fibers and other materials.

[0032] The plasma treatment method is as follows: Place the pretreated basalt fibers in a plasma device for treatment. The discharge power of the plasma device is 150 - 200 W, and the treatment time is 3 - 6 min.

[0033] S3. Dry the wood veneer at a temperature of 50 - 70 °C until the moisture content is 5% - 10% to obtain a wood base layer. Among them, the wood veneer can be eucalyptus veneer, but is not limited to this.

[0034] S4. Immerse the modified basalt fibers in a phenolic resin adhesive, and then perform drying treatment to obtain a basalt fiber layer.

[0035] S5. Compose the wood base layer and the basalt fiber layer, and perform hot pressing treatment to obtain a wood-based basalt fiber composite material. Among them, the pressure of the hot pressing treatment is 1 - 1.2 MPa, the temperature is 100 - 120 °C, and the time is 6 - 12 min.

[0036] The surface of basalt fiber is relatively smooth. When its surface is treated with hydrochloric acid, the acid solution will react chemically with some components on the fiber surface, forming tiny pits and protrusions on the fiber surface, thereby increasing the surface roughness of the fiber and improving the surface activity at the same time. When this modified basalt fiber is used in a composite material, the rough surface can enable the fiber to better bond with the matrix, thus improving the mechanical properties of the composite material.

[0037] Treating the surface of basalt fiber with sodium hydroxide can effectively remove the acidic impurities on the basalt fiber surface, change the surface morphology of the basalt fiber, increase its surface roughness, and some products (such as sodium silicate, etc.) formed on the basalt fiber surface can form a protective film on the fiber surface. This protective film can, to a certain extent, prevent the erosion of the fiber by external corrosive substances (such as acids, salts, etc.).

[0038] Plasma is the fourth state of matter, composed of photons, ions, electrons, and neutral particles, with high energy and activity, and can react chemically with the surface of basalt fiber to change its surface properties. Using the high-energy particles in the plasma to etch the surface of basalt fiber can increase the surface roughness of the fiber, thus facilitating the diffusion and penetration of the adhesive on its surface.

[0039] Example 1: As Figure 1 shown, this example provides a wood-based basalt fiber composite material, which includes three layers of wood base layers 1, and a basalt fiber layer 2 is provided between two adjacent wood base layers 1; the preparation method of this wood-based basalt fiber composite material includes the following steps:

[0040] S1. Cut the basalt fiber cloth into 2 pieces of 20 cm × 10 cm, and place them in an oven at 200 °C for baking for 2 h to remove the sizing agent, and then polish its surface with sandpaper to obtain 2 pieces of pretreated basalt fiber.

[0041] S2. Treat the surface of the above-mentioned pretreated basalt fiber by an acid treatment method, then place it in an ultrasonic cleaner and wash it with deionized water for 18 min, and put the washed basalt fiber into an oven at 120 °C for drying treatment for 30 min to obtain modified basalt fiber for standby;

[0042] Specifically, the acid treatment method is: place the pretreated basalt fiber in the acid treatment solution, heat it to 70 °C for impregnation treatment for 1 h; the acid treatment solution includes hydrochloric acid, sodium dodecyl sulfate (SDS), and ethylenediaminetetraacetic acid (EDTA), wherein the mass percentage concentration of hydrochloric acid is 3%, the mass percentage concentration of sodium dodecyl sulfate is 0.4%, the mass percentage concentration of ethylenediaminetetraacetic acid is 0.2%, and the balance is water.

[0043] S3. Place the eucalyptus veneer in an oven at 60 °C for drying until the moisture content reaches 8% to obtain the wood base layer 1.

[0044] S4. Immerse the modified basalt fiber in phenolic resin adhesive for 10 min, then air dry for 5 min, and then place it in an oven at 60 °C for drying for 30 min to obtain the basalt fiber layer 2.

[0045] S5. Assemble the wood base layer 1 and the basalt fiber layer 2 according to the Figure 1 shown structure to obtain the basalt fiber layer blank, and then place it in a hot press for hot pressing for 8 min to obtain the wood-based basalt fiber composite material; wherein, the pressure of the hot pressing treatment is 1.1 MPa and the temperature is 110 °C.

[0046] Example 2: As Figure 1 shown, this example provides a wood-based basalt fiber composite material, which includes three layers of wood base layer 1, and a basalt fiber layer 2 is provided between adjacent two layers of wood base layer 1; the preparation method of this wood-based basalt fiber composite material includes the following steps:

[0047] S1. Cut the basalt fiber cloth into 2 pieces of 20 cm × 10 cm, and place them in an oven at 200 °C for baking for 2 h to remove the sizing agent, and then polish its surface with sandpaper to obtain 2 pieces of pretreated basalt fiber.

[0048] S2. Treat the surface of the above-mentioned pretreated basalt fiber by alkali treatment method, then place it in an ultrasonic cleaner and wash it with deionized water for 18 min, and put the washed and clean basalt fiber into an oven at 120 °C for drying for 30 min to obtain the modified basalt fiber for standby;

[0049] Specifically, the alkali treatment method is: place the pretreated basalt fiber in the alkali treatment solution and heat it to 60 - 80 °C for impregnation treatment; the alkali treatment solution includes sodium hydroxide, sodium dodecyl sulfate and titanium dioxide, wherein, the mass percentage concentration of sodium hydroxide is 3%, the mass percentage concentration of sodium dodecyl sulfate is 0.4%, the mass percentage concentration of titanium dioxide is 0.3%, and the balance is water.

[0050] S3. Place the eucalyptus veneer in an oven at 60 °C for drying until the moisture content reaches 8% to obtain the wood base layer 1.

[0051] S4. Immerse the modified basalt fiber in phenolic resin adhesive for 10 min, then air dry for 5 min, and then place it in an oven at 60 °C for drying for 30 min to obtain the basalt fiber layer 2.

[0052] S5. Assemble the wood base layer 1 and the basalt fiber layer 2 according to theFigure 1 Assemble the structure shown to obtain a basalt fiber layer preform, and then place it in a hot press for hot pressing treatment for 8 min to obtain a wood-based basalt fiber composite material; wherein, the pressure of the hot pressing treatment is 1.1 MPa and the temperature is 110 °C.

[0053] Example 3: As Figure 1 shown, this example provides a wood-based basalt fiber composite material, which includes three layers of wood base layers 1, and basalt fiber layers 2 are provided between adjacent two layers of wood base layers 1; the preparation method of this wood-based basalt fiber composite material includes the following steps:

[0054] S1. Cut the basalt fiber cloth into 2 pieces of 20 cm × 10 cm, and place them in an oven at 200 °C for baking for 2 h to remove the sizing agent, and then polish its surface with sandpaper to obtain 2 pieces of pretreated basalt fibers.

[0055] S2. Treat the surface of the above-mentioned pretreated basalt fibers by means of plasma treatment, then place them in an ultrasonic cleaner and wash them with deionized water for 18 min, and put the washed basalt fibers into an oven at 120 °C for drying treatment for 30 min to obtain modified basalt fibers for standby;

[0056] Specifically, the method of plasma treatment is: place the pretreated basalt fibers in a plasma equipment for treatment; the discharge power of the plasma equipment is 180 W and the treatment time is 4 min.

[0057] S3. Place the eucalyptus veneer in an oven at 60 °C for drying treatment until the moisture content is 8% to obtain the wood base layer 1;

[0058] S4. Immerse the modified basalt fibers in a phenolic resin adhesive for impregnation treatment for 10 min, then air-dry for 5 min, and then place them in an oven at 60 °C for drying treatment for 30 min to obtain the basalt fiber layer 2.

[0059] S5. Assemble the wood base layer 1 and the basalt fiber layer 2 according to the Figure 1 structure shown to obtain a basalt fiber layer preform, and then place it in a hot press for hot pressing treatment for 8 min to obtain a wood-based basalt fiber composite material; wherein, the pressure of the hot pressing treatment is 1.1 MPa and the temperature is 110 °C.

[0060] Example 4: As Figure 1 shown, this example provides a wood-based basalt fiber composite material, which includes three layers of wood base layers 1, and basalt fiber layers 2 are provided between adjacent two layers of wood base layers 1; the preparation method of this wood-based basalt fiber composite material includes the following steps:

[0061] S1. Cut the basalt fiber cloth into two pieces of 20 cm × 10 cm, and put them into an oven at 180 °C for baking for 2 h to remove the sizing agent. Then, sand the surface with sandpaper to obtain two pieces of pretreated basalt fiber.

[0062] S2. Treat the surface of the above pretreated basalt fiber by acid treatment and plasma treatment in sequence. Then, put it in an ultrasonic cleaner and wash it with deionized water for 15 min. Put the washed basalt fiber into an oven at 110 °C for drying treatment for 30 min to obtain modified basalt fiber for standby.

[0063] Specifically, the acid treatment method is as follows: Put the pretreated basalt fiber into the acid treatment solution and heat it to 60 °C for impregnation treatment for 1 h. The acid treatment solution includes hydrochloric acid, sodium dodecyl sulfate (SDS) and ethylenediaminetetraacetic acid (EDTA). Among them, the mass percentage concentration of hydrochloric acid is 1%, the mass percentage concentration of sodium dodecyl sulfate is 0.2%, the mass percentage concentration of ethylenediaminetetraacetic acid is 0.1%, and the balance is water.

[0064] The plasma treatment method is as follows: Put the basalt fiber after acid treatment into the plasma equipment for treatment. The discharge power of the plasma equipment is 150 W, and the treatment time is 3 min.

[0065] S3. Put the eucalyptus veneer into an oven at 50 °C for drying treatment until the moisture content is 5% to obtain the wood base layer 1.

[0066] S4. Immerse the modified basalt fiber in the phenolic resin adhesive for impregnation treatment for 10 min, then air dry for 5 min, and then put it into an oven at 50 °C for drying treatment for 30 min to obtain the basalt fiber layer 2.

[0067] S5. Assemble the wood base layer 1 and the basalt fiber layer 2 according to the Figure 1 shown structure to obtain the basalt fiber layer blank, and then put it into a hot press for hot pressing treatment for 6 min to obtain the wood-based basalt fiber composite material. Among them, the pressure of the hot pressing treatment is 1 MPa, and the temperature is 100 °C.

[0068] Example 5: As Figure 1 shown, this example provides a wood-based basalt fiber composite material, which includes three layers of wood base layer 1, and a basalt fiber layer 2 is provided between adjacent two layers of wood base layer 1. The preparation method of this wood-based basalt fiber composite material includes the following steps:

[0069] S1. Cut the basalt fiber cloth into two pieces of 20 cm × 10 cm, and put them into an oven at 220 °C for baking for 2 h to remove the sizing agent. Then, sand the surface with sandpaper to obtain two pieces of pretreated basalt fiber.

[0070] S2. Treat the surface of the pretreated basalt fiber by alkali treatment and plasma treatment successively. Then place it in an ultrasonic cleaner and wash it with deionized water for 20 min. Put the washed basalt fiber into an oven at 130 °C and dry it for 30 min to obtain the modified basalt fiber for standby.

[0071] Specifically, the alkali treatment method is as follows: Place the pretreated basalt fiber in the alkali treatment solution and heat it to 60 °C for impregnation treatment. The alkali treatment solution includes sodium hydroxide, sodium dodecyl sulfate and titanium dioxide. Among them, the mass percentage concentration of sodium hydroxide is 1%, the mass percentage concentration of sodium dodecyl sulfate is 0.2%, the mass percentage concentration of titanium dioxide is 0.1%, and the balance is water.

[0072] The plasma treatment method is as follows: Place the basalt fiber after alkali treatment in a plasma device for treatment. The discharge power of the plasma device is 200 W and the treatment time is 6 min.

[0073] S3. Put the eucalyptus veneer into an oven at 70 °C and dry it until the moisture content is 10% to obtain the wood base layer 1.

[0074] S4. Immerse the modified basalt fiber in the phenolic resin adhesive for 10 min, then air-dry it for 5 min, and then put it into an oven at 70 °C and dry it for 30 min to obtain the basalt fiber layer 2.

[0075] S5. Assemble the wood base layer 1 and the basalt fiber layer 2 according to the Figure 1 shown structure to obtain the basalt fiber layer blank, and then put it into a hot press for hot pressing treatment for 12 min to obtain the wood-based basalt fiber composite material. Among them, the pressure of the hot pressing treatment is 1.2 MPa and the temperature is 120 °C.

[0076] Example 6: As Figure 1 shown, this example provides a wood-based basalt fiber composite material, which includes three layers of wood base layer 1, and a basalt fiber layer 2 is provided between adjacent two layers of wood base layer 1. The preparation method of this wood-based basalt fiber composite material includes the following steps:

[0077] S1. Cut the basalt fiber cloth into 2 pieces of 20 cm × 10 cm, put them into an oven at 190 °C respectively and bake for 2 h to remove the sizing agent, and then polish its surface with sandpaper to obtain 2 pieces of pretreated basalt fiber.

[0078] S2. The surface of the pretreated basalt fiber is treated successively by acid treatment, alkali treatment and plasma treatment. Then it is placed in an ultrasonic cleaner and washed with deionized water for 20 min. The washed basalt fiber is put into an oven at 120 °C for drying treatment for 30 min to obtain modified basalt fiber for standby.

[0079] Specifically, the acid treatment method is as follows: The pretreated basalt fiber is placed in an acid treatment solution and heated to 80 °C for impregnation treatment for 1 h. The acid treatment solution includes hydrochloric acid, sodium dodecyl sulfate (SDS) and ethylenediaminetetraacetic acid (EDTA). Among them, the mass percentage concentration of hydrochloric acid is 5%, the mass percentage concentration of sodium dodecyl sulfate is 0.5%, the mass percentage concentration of ethylenediaminetetraacetic acid is 0.3%, and the balance is water.

[0080] The alkali treatment method is as follows: The acid-treated basalt fiber is placed in an alkali treatment solution and heated to 80 °C for impregnation treatment. The alkali treatment solution includes sodium hydroxide, sodium dodecyl sulfate and titanium dioxide. Among them, the mass percentage concentration of sodium hydroxide is 5%, the mass percentage concentration of sodium dodecyl sulfate is 0.5%, the mass percentage concentration of titanium dioxide is 0.5%, and the balance is water.

[0081] The plasma treatment method is as follows: The alkali-treated basalt fiber is placed in a plasma device for treatment. The discharge power of the plasma device is 170 W and the treatment time is 5 min.

[0082] S3. The eucalyptus veneer is put into an oven at 60 °C for drying treatment until the moisture content is 6% to obtain the wood base layer 1.

[0083] S4. The modified basalt fiber is placed in a phenolic resin adhesive for impregnation treatment for 10 min, then air-dried for 5 min, and then put into an oven at 60 °C for drying treatment for 30 min to obtain the basalt fiber layer 2.

[0084] S5. The wood base layer 1 and the basalt fiber layer 2 are assembled according to the Figure 1 shown structure to obtain the basalt fiber layer blank, and then put into a hot press for hot pressing treatment for 10 min to obtain the wood-based basalt fiber composite material. Among them, the pressure of the hot pressing treatment is 1.2 MPa and the temperature is 120 °C.

[0085] The wood-based basalt fiber composites prepared in the above Examples 1-3 were subjected to gluing strength tests in accordance with GB / T 17657-2022, and the test results are shown in Tables 1-3 respectively. Among them, Table 1 shows the gluing strength and wood breakage rate test results of the wood-based basalt fiber composites prepared in Example 1 under different test conditions; Table 2 shows the gluing strength and wood breakage rate test results of the wood-based basalt fiber composites prepared in Example 2 under different test conditions; Table 3 shows the gluing strength and wood breakage rate test results of the wood-based basalt fiber composites prepared in Example 3 under different test conditions.

[0086] Table 1

[0087]

[0088] Table 2

[0089]

[0090] Table 3

[0091]

[0092] From the above test results, it can be known that in the examples of the present invention, by utilizing the characteristics of high mechanical strength of basalt fibers and adopting methods such as acid treatment, alkali treatment, and plasma treatment to modify the surface of basalt fibers, the interfacial gluing performance can be improved, and then by compounding it with wood veneers, a wood-based basalt fiber composite material with high gluing strength can be prepared.

[0093] Taking the ideal embodiments of the present invention as inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification.

Claims

1. A wood-based basalt fiber composite material, comprising a wood-based layer, characterized in that: It also includes a basalt fiber layer; the basalt fiber layer is made of modified basalt fiber; the modified basalt fiber is made by at least one of acid treatment, alkali treatment and plasma treatment on the surface of the basalt fiber.

2. The wood-based basalt fiber composite material according to claim 1, characterized in that: The preparation method of the modified basalt fiber comprises the following steps: The basalt fiber is baked and then the surface thereof is polished to obtain pretreated basalt fiber; The surface of the pretreated basalt fiber is treated by at least one of acid treatment, alkali treatment and plasma treatment to obtain the modified basalt fiber.

3. The wood-based basalt fiber composite material according to claim 2, characterized in that: The baking temperature is 180-220°C.

4. The wood-based basalt fiber composite material according to claim 2, characterized in that: The acid treatment method is: placing the pretreated basalt fiber in an acid treatment solution, heating it to 60-80° C. for immersion treatment.

5. The wood-based basalt fiber composite material according to claim 4, characterized in that: The acid treatment solution comprises hydrochloric acid, sodium dodecyl sulfate and ethylenediaminetetraacetic acid, wherein the mass percentage concentration of hydrochloric acid is 1%-5%, the mass percentage concentration of sodium dodecyl sulfate is 0.2%-0.5%, and the mass percentage concentration of ethylenediaminetetraacetic acid is 0.1%-0.3%.

6. The wood-based basalt fiber composite material according to claim 2, characterized in that: The alkali treatment method is: placing the pretreated basalt fiber in an alkali treatment solution, heating it to 60-80° C. for immersion treatment.

7. The wood-based basalt fiber composite material according to claim 4, characterized in that: The alkaline treatment solution comprises sodium hydroxide, sodium dodecyl sulfate and titanium dioxide, wherein the mass percentage concentration of sodium hydroxide is 1%-5%, the mass percentage concentration of sodium dodecyl sulfate is 0.2%-0.5%, and the mass percentage concentration of titanium dioxide is 0.1%-0.5%.

8. The wood-based basalt fiber composite material according to claim 2, characterized in that: The plasma treatment method is: placing the pretreated basalt fiber in a plasma device for treatment; the discharge power of the plasma device is 150-200W, and the treatment time is 3-6 minutes.

9. A method for preparing the wood-based basalt fiber composite material according to any one of claims 1 to 8, characterized in that: The following steps are involved: The wood veneer is placed in a temperature of 50-70°C for drying until the moisture content is 5%-10% to obtain a wood base layer; The modified basalt fiber is impregnated in a phenolic resin adhesive and then dried to obtain a basalt fiber layer. The wood-based layer and the basalt fiber layer are compounded and subjected to a hot pressing treatment to obtain the wood-based basalt fiber composite material.

10. The method for preparing the wood-based basalt fiber composite material according to claim 9, characterized in that: The pressure of the hot pressing treatment is 1-1.2MPa, the temperature is 100-120°C, and the time is 6-12min.

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