Wear-resistant and anti-corrosion bamboo-based coiled material and preparation method thereof, as well as carbonized coating preparation method

Abstract

The invention discloses a wear-resistant and anti-corrosion bamboo-based coiled material, a preparation method thereof, and a carbonized coating preparation method. The preparation method of the wear-resistant and anti-corrosion bamboo-based coiled material is as follows: the bamboo material is cleaned and cut to obtain preliminary processing, and then processed by a bamboo flattening all-in-one machine and an oriented fiber matting machine to obtain bamboo fiber, the bamboo fiber is acid-treated, a 6%wt concentration of glacial acetic acid solution is added to the bamboo fiber, and the mixture is ball-milled to fully mix the mixture, and the bamboo-based coiled material is obtained by air-laying after wet gluing and hot pressing at a temperature of 150°C, a pressure of 8MPa, and a time of 60min. The carbonized coating solution is atomized into uniform droplets by an ultrasonic nozzle, sprayed on the surface of the bamboo-based coiled material, and formed into a bamboo-based coiled material with a carbonized coating after curing. The invention utilizes the modification of nanotubes and the polymerization of thermoplastic materials to manufacture a high-performance composite material, and sprays the composite material on the surface of the bamboo-based coiled material to enhance its wear resistance and corrosion resistance.

Description

Technical Field

[0001] The invention relates to the technical field of surface modification of composite materials, in particular to a wear-resistant and anti-corrosion bamboo-based coiled material and a preparation method thereof, as well as a carbonized coating preparation method. Background Art

[0002] As a new type of composite material, bamboo-based membranes are attracting widespread attention worldwide due to their low manufacturing cost and green and non-toxic characteristics. However, due to their inherent softness and the characteristics of bamboo, bamboo-based membranes are susceptible to wear and tear caused by external impact and rot caused by the external environment. Summary of the Invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid blurring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0004] In view of the above problems and / or the problems existing in the existing bamboo-based coiled materials, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a wear-resistant and corrosion-resistant bamboo-based coiled material and a preparation method thereof, as well as a carbonized coating preparation method, and to utilize the modification of nanotubes and the polymerization of thermoplastic materials to manufacture high-performance composite materials, and to spray them on the surface of the bamboo-based coiled material to enhance its wear resistance and corrosion resistance.

[0006] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A wear-resistant and anti-corrosion bamboo-based coiled material, characterized by comprising: a bamboo-based coiled material and a carbonized coating sprayed on the surface of the bamboo-based coiled material.

[0008] As a preferred embodiment of the wear-resistant and anti-corrosion bamboo-based coiled material described in the present invention, the thickness of the bamboo-based coiled material is 1 cm-2 cm, and the thickness of the carbonized coating is 50-60 μm.

[0009] A method for preparing a wear-resistant and anti-corrosion bamboo-based coiled material, comprising the following steps:

[0010] The bamboo material is cleaned and cut to obtain preliminary processing, and then processed by a bamboo flattening machine and an oriented fiber matting machine to obtain bamboo fiber, and the bamboo fiber is acid-treated;

[0011] A 6% wt glacial acetic acid solution was added to the bamboo fiber and ball-milled to mix the mixture thoroughly. After wet sizing, the mixture was air-laid and hot-pressed at 150° C., 8 MPa and 60 min to obtain a bamboo-based coiled material.

[0012] The carbonized coating solution is atomized into uniform droplets by using an ultrasonic nozzle, and is sprayed on the surface of the bamboo-based coiled material. After curing, the bamboo-based coiled material with the carbonized coating is formed.

[0013] As a preferred embodiment of the method for preparing the wear-resistant and anticorrosive bamboo-based coiled material of the present invention, the viscosity of the carbonized coating solution is lower than 30 cps and the solid content is lower than 30%.

[0014] As a preferred embodiment of the method for preparing the wear-resistant and anti-corrosion bamboo-based coiled material of the present invention, the bamboo material is moso bamboo or waste bamboo material.

[0015] A method for preparing a carbonized coating, the specific steps are as follows:

[0016] Pretreatment: Place a certain amount of multi-walled carbon nanotubes in a beaker and treat them with a mixture of 98% concentrated sulfuric acid and concentrated nitric acid in a ratio of 2:1. Mix the mixture at 60°C for 10 hours. Treat the multi-walled carbon nanotubes with a 2 mol / L sodium hydroxide solution and adjust the pH to neutral.

[0017] Modification treatment: The pretreated multi-walled nanotubes were mixed with a solution of anhydrous ethanol and deionized water, and ultrasonicated for 15 minutes. A silane coupling agent was then added and ultrasonicated for another 10 minutes. After the silane coupling agent treatment, the hydrophobic multi-walled nanotubes became hydrophilic due to the attachment of polar groups, making the multi-walled nanotubes more soluble in various organic solvents.

[0018] In-situ polymerization treatment: The modified multi-walled nanotubes are dried and filtered, and then mixed with an aqueous solution to which 0.1 mol / L of surfactant and 5% sodium bicarbonate are added. Polyethylene monomer pellets are added to the mixed solution, and the mixture is blended at a temperature of 183°C and a stirring rate of 80 rpm for 8 minutes to obtain uniformly dispersed microemulsion droplets. The carbon nano / polyethylene composite material is obtained by reaction extrusion using an extruder at a temperature of 200°C and a screw speed of 20 r / min.

[0019] As a preferred embodiment of the method for preparing the wear-resistant and anticorrosive bamboo-based coiled material of the present invention, the surfactant is 0.1 mol / L sodium lauryl sulfate.

[0020] As a preferred embodiment of the method for preparing the wear-resistant and anticorrosive bamboo-based coiled material of the present invention, during the in-situ polymerization process, the mixture solution is subjected to ultrasonic treatment for 20 minutes.

[0021] As a preferred embodiment of the method for preparing the wear-resistant and anticorrosive bamboo-based coiled material of the present invention, the extruder is a twin-screw extruder.

[0022] As a preferred embodiment of the method for preparing the wear-resistant and anti-corrosion bamboo-based coiled material described in the present invention, in the pretreatment step, the acid-treated multi-walled nanotubes are rinsed with a large amount of deionized water, and then treated with a 2 mol / L sodium hydroxide solution to adjust the pH value to neutral.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The preparation method of the carbonized coating provided by the present invention is improved on the basis of the existing preparation method of the carbonized coating, adopts lower-priced raw materials to reduce the cost of the carbonized coating, adopts the in-situ polymerization method to make carbon nano monomers prepolymerize on polyethylene, and when the polymerization size of the prepolymer gradually increases, it is deposited on the surface of the polyethylene to form a composite material. This in-situ polymerization method makes the dispersion of carbon nanoparticles more uniform, and the performance of the prepared composite material is better. In addition, sodium lauryl sulfate is used as a surfactant for treatment. The physical adsorption of the surfactant on the surface of the multi-walled nanotubes reduces the surface tension of the multi-walled nanotubes. The electrostatic / steric repulsion between the multi-walled nanotubes treated with the surfactant is greater than the van der Waals attraction between the multi-walled nanotubes, which effectively prevents the agglomeration of carbon nanomaterials.

[0025] 2. The bamboo material is continuously flattened and de-yellowinged in a flattening machine, then dried in a segmented drying process and stacked in opposite directions to obtain processed bamboo chips. An oriented fiber matting machine is used to cut and split the bamboo chips, separating them into several basic tissues and 2-4 in-situ fibers of vascular bundles. The obtained basic tissues and in-situ fibers are mixed evenly with an adhesive and wet-laid, air-laid, formed, and hot-pressed to produce a bamboo-based coil. The nanoparticle / polyethylene composite material is ultrasonically sprayed onto the surface of the bamboo-based coil in the form of a thin film. This coating can largely prevent corrosive media from penetrating the coating and corroding the base bamboo-based coil, achieving permanent corrosion protection for the bamboo-based material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort. Among them:

[0027] Figure 1 The present invention is a process flow chart for preparing a wear-resistant and anti-corrosion bamboo-based coiled material and a carbonized coating. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0030] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0031] Example 1

[0032] The present invention provides a wear-resistant and anti-corrosion bamboo-based coiled material, which comprises: a bamboo-based coiled material and a carbonized coating sprayed on the surface of the bamboo-based coiled material. The bamboo material used in the preparation of the bamboo-based coiled material is moso bamboo or discarded bamboo material. Moso bamboo is the oldest, most widely cultivated, and most economically valuable bamboo species in China. It grows fast, matures early, has high yield, and is widely used. Moso bamboo can be used as the main production raw material to reduce costs. Bamboo has recyclable value. Discarded bamboo can also be used to prepare the bamboo-based coiled material. In this embodiment, the thickness of the bamboo-based coiled material is 1 cm to 2 cm, the thickness of the carbonized coating is 50-60 μm, and the bamboo-based coiled material has a thickness of 1 cm to 2 cm. The thickness of the carbonized coating is 50-60 μm. 3 The amount of glue applied is about 100 kg. The present invention uses ultrasonic spraying to spray the glue on the surface of the bamboo-based coil in the form of a thin film. The coating can largely prevent the corrosive medium from passing through the coating and then corroding the base bamboo-based coil, thereby achieving permanent corrosion resistance and wear resistance of the bamboo-based material.

[0033] Example 2

[0034] In order to realize the carbonized coating that can be sprayed on the surface of the bamboo-based coiled material, the present invention also provides a method for preparing the carbonized coating, please refer to Figure 1 , the specific steps are as follows:

[0035] Pretreatment: Place a certain amount of multi-walled carbon nanotubes in a beaker and treat them with a mixture of 98% concentrated sulfuric acid and concentrated nitric acid in a ratio of 2:1. The mixture is then mixed at 60°C for 10 hours. The acid-treated multi-walled nanotubes are then rinsed with a large amount of deionized water and treated with a 2 mol / L sodium hydroxide solution to adjust the pH to neutral.

[0036] Modification treatment: The pretreated multi-walled nanotubes were mixed with a solution of anhydrous ethanol and deionized water, and ultrasonicated for 15 minutes. A silane coupling agent was then added and ultrasonicated for another 10 minutes. After the silane coupling agent treatment, the hydrophobic multi-walled nanotubes became hydrophilic due to the attachment of polar groups, making the multi-walled nanotubes more soluble in various organic solvents.

[0037] In-situ polymerization treatment: The modified multi-walled nanotubes were dried and filtered, and then mixed with an aqueous solution of 0.1 mol / L surfactant (0.1 mol / L sodium lauryl sulfate) and 5% sodium bicarbonate. The mixture was ultrasonically treated for 20 minutes to form uniformly dispersed microemulsion droplets. Polyethylene monomer pellets were added to the mixed solution and blended for 8 minutes at a temperature of 183°C and a stirring speed of 80 rpm to obtain uniformly dispersed microemulsion droplets. The mixture was extruded using a twin-screw extruder (twin-screw extrusion technology provides sufficient mixing, good heat transfer, large melting capacity, strong exhaust capacity and high pressure). Good material temperature control ensures the high quality of the carbon nano / polyethylene composite material. The carbon nano / polyethylene composite material was obtained by reactive extrusion at a temperature of 200°C and a screw speed of 20 r / min. In this step, a mixed solution of anhydrous ethanol and deionized water was added before the silane coupling agent. This proves that the modified multi-walled nanotubes are soluble in organic solvents and can be used to determine the degree of modification of the multi-walled nanotubes by the silane coupling agent. In situ polymerization, the reactive carbon nano monomer (or its soluble prepolymer) and catalyst are added to the dispersed phase (or continuous phase), with polyethylene as the dispersed phase. Because the monomer (or prepolymer) is soluble in a single phase, while the polymer is insoluble in the entire system, the polymerization reaction occurs on the dispersed phase core material. The reaction begins with monomer prepolymerization and then prepolymer polymerization. As the prepolymer polymerizes, it gradually increases in size and deposits on the polyethylene surface. In the in situ polymerization process, the reaction is carried out at a temperature of 183°C and a stirring speed of 80 rpm. The final carbon nano / polyethylene composite material was obtained. The surfactant used was 0.1 mol / L sodium dodecyl sulfate, which has good emulsification, foaming properties, water solubility, biodegradability, a biodegradability of >90%, alkali resistance, hard water resistance, stability in aqueous solutions with a wide pH value, easy synthesis, and low price.

[0038] The preparation method of the carbonized coating provided by the present invention is improved on the basis of the existing preparation method of the carbonized coating, adopts lower-priced raw materials to reduce the cost of the carbonized coating, adopts the in-situ polymerization method to make carbon nano monomers prepolymerize on polyethylene, and when the polymerization size of the prepolymer gradually increases, it is deposited on the surface of the polyethylene to form a composite material. This in-situ polymerization method makes the carbon nano dispersion more uniform, and the prepared composite material has better performance. In addition, sodium lauryl sulfate is used as a surfactant for treatment. The physical adsorption of the surfactant on the surface of the multi-walled nanotubes reduces the surface tension of the multi-walled nanotubes. The electrostatic / steric repulsion between the multi-walled nanotubes treated with the surfactant is greater than the van der Waals attraction between the multi-walled nanotubes, effectively preventing the agglomeration of the carbon nanomaterials.

[0039] Example 3

[0040] In order to realize the preparation of the above-mentioned wear-resistant and anticorrosive bamboo-based coiled materials, Figure 1 As shown, based on the carbonized coating prepared above, the present invention also provides a method for preparing a wear-resistant and anti-corrosion bamboo-based coiled material, and the specific steps are as follows:

[0041] The bamboo material (which can be waste bamboo material or moso bamboo) is cleaned and cut into pieces to obtain a preliminary processing, and then processed by a bamboo flattening machine and an oriented fiber matting machine to obtain moso bamboo fiber, and the moso bamboo fiber is subjected to acid treatment;

[0042] A 6% wt glacial acetic acid solution was added to the bamboo fiber and ball-milled to mix the mixture thoroughly. After wet sizing, the mixture was air-laid and hot-pressed at 150° C., 8 MPa and 60 min to obtain a bamboo-based coiled material.

[0043] The carbonized coating solution is atomized into uniform droplets using an ultrasonic nozzle, sprayed onto the surface of the bamboo-based coil, and cured to form a bamboo-based coil with a carbonized coating. The carbonized coating solution has a viscosity of less than 30 cps and a solid content of less than 30%, which results in the best atomization effect, and thus the carbonized coating formed on the surface of the bamboo-based coil by the sprayed liquid has the best performance.

[0044] The bamboo material is continuously flattened and de-yellowinged using a flattening machine. It is then dried in a segmented drying process and stacked in opposite directions to produce processed bamboo chips. An oriented fiber matting machine is used to cut and split the bamboo chips, separating them into several basic tissues and 2-4 in-situ fibers of vascular bundles. The resulting basic tissues and in-situ fibers are mixed with an adhesive and wet-laid, air-laid, and hot-pressed to produce a bamboo-based coil. A thin film of the nanoparticle / polyethylene composite material is ultrasonically sprayed onto the surface of the bamboo-based coil. This coating significantly prevents corrosive media from penetrating the coating and corroding the underlying bamboo-based coil, achieving permanent corrosion protection for the bamboo-based material.

[0045] The following are two specific implementation plans in the process of producing carbonized coated bamboo-based coils:

[0046] First implementation plan:

[0047] 1. Preparation of Bamboo-Based Coil: Moso bamboo is the oldest, most widely cultivated, and most economically valuable bamboo species in China. It grows quickly, matures early, has a high yield, and is widely used. To reduce costs, moso bamboo is used as the primary raw material. Approximately one ton of moso bamboo is initially processed through cleaning and cutting. It is then processed using a bamboo flattening machine and an oriented fiber matting machine to produce bamboo fiber. The fiber is then acid-treated. A 6% wt glacial acetic acid solution is added to the fiber, ball-milled, and thoroughly mixed. After wet gluing, the fiber is air-laid and hot-pressed at 150°C, 8 MPa, and 60 minutes to produce the bamboo-based coil with relatively high performance.

[0048] 2. Acidification of carbon nanotubes: 1 kg of multi-walled carbon nanotubes was placed in a beaker. A mixture of 98% concentrated sulfuric acid and concentrated nitric acid (2:1 by weight) was added to the mixture. The mixture was ball-milled in a 60°C incubator for 10 hours. The acid-treated multi-walled nanotubes were rinsed with copious amounts of deionized water. The pH of the multi-walled nanotubes was then adjusted with 2 mol / L sodium hydroxide solution until the pH reached 7.

[0049] 3. Carbon Nanotube Modification: The acid-treated multi-walled carbon nanotubes were mixed with an aqueous solution of anhydrous ethanol and deionized water (essentially, an organic solvent) and cleaned using a CNC ultrasonic cleaner for 15 minutes. A silane coupling agent was added to the mixed solution, and ultrasonic cleaning was continued for 10 minutes using a CNC ultrasonic cleaner. The mixture was then dried in a 100°C oven for 40 hours until no moisture remained on the surface of the multi-walled nanotubes, and then filtered.

[0050] 4. In-situ polymerization of carbon nanotubes: The modified multi-walled carbon nanotubes obtained in step 3 were mixed with an aqueous solution containing 0.1 mol / L of the surfactant sodium dodecyl sulfate (SDS) and 5% sodium bicarbonate. After blending for 10 minutes, polyethylene monomer pellets were added and blended for another 8 minutes at 183°C and 80 rpm to obtain a uniformly dispersed carbon nanotube / polyethylene microemulsion droplet. Finally, the carbon nanotube / polyethylene composite material was obtained by reactive extrusion using a twin-screw extruder at 200°C and a screw speed of 20 rpm.

[0051] 5. Ultrasonic spraying of the carbonized coating: The carbon nano / polyethylene composite material obtained in step 4 is mixed with an organic solvent to form a mixed solution with a solids content of no more than 30%. The solution is atomized into uniform droplets using an ultrasonic nozzle and sprayed onto the surface of the bamboo-based coil. After curing, the bamboo-based coil is provided with a carbonized coating.

[0052] Second Implementation Plan:

[0053] 1. Preparation of bamboo-based coiled materials: Bamboo has recyclable value. Waste bamboo can be used to prepare bamboo-based coiled materials, further reducing costs while increasing the utilization rate of bamboo. Since bamboo fibers are pretreated with glacial acetic acid during the processing process, the mechanical properties of bamboo fibers are significantly improved, thus avoiding the disadvantage of poor performance of waste bamboo fibers. About one ton of waste bamboo is taken and initially processed through steps such as cleaning and cutting. It is then processed through a bamboo flattening machine and an oriented fiber matting machine to obtain bamboo raw fibers. The bamboo raw fibers are then acid-treated. A 6% wt glacial acetic acid solution is added to the bamboo raw fibers and ball-milled to fully mix them. After wet sizing, the fibers are air-laid and hot-pressed at 150°C, 10 MPa, and 60 minutes to obtain a bamboo-based coiled material with relatively excellent performance.

[0054] 2. Acidification of carbon nanotubes: Multi-walled carbon nanotubes were placed in a beaker and a mixture of 98% concentrated sulfuric acid and concentrated nitric acid (2:1 by weight) was added. The mixture was ball-milled in a 60°C incubator for 10 hours. The acid-treated multi-walled nanotubes were rinsed with copious amounts of deionized water and then the pH of the multi-walled nanotubes was adjusted to 7 using a 2 mol / L sodium hydroxide solution.

[0055] 3. Carbon Nanotube Modification: The acid-treated single-walled carbon nanotubes were mixed with an aqueous solution of anhydrous ethanol and deionized water (essentially, an organic solvent) and cleaned in a CNC ultrasonic cleaner for 15 minutes. A silane coupling agent was added to the mixed solution, and ultrasonic cleaning was continued in a CNC ultrasonic cleaner for 10 minutes. The mixture was then dried in a 100°C oven for 40 hours until no moisture remained on the surface of the multi-walled nanotubes, and then filtered.

[0056] 4. In-situ polymerization of carbon nanotubes: The modified multi-walled carbon nanotubes obtained in step 3 were mixed with an aqueous solution containing 0.1 mol / L of the surfactant sodium dodecyl sulfate (SDS) and 5% sodium bicarbonate. After blending for 10 minutes, polyethylene monomer pellets were added and blended for another 8 minutes at 183°C and 80 rpm to obtain a uniformly dispersed carbon nanotube / polyethylene microemulsion droplet. Finally, the carbon nanotube / polyethylene composite material was obtained by reactive extrusion using a twin-screw extruder at 200°C and a screw speed of 20 rpm.

[0057] 5. Ultrasonic spraying of the carbonized coating: The carbon nano / polyethylene composite material obtained in step 4 is mixed with an organic solvent to form a mixed solution with a solids content of no more than 30%. The solution is atomized into uniform droplets using an ultrasonic nozzle and sprayed onto the surface of the bamboo-based coil. After curing, the bamboo-based coil is provided with a carbonized coating.

[0058] Although the present invention has been described above with reference to embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as there are no structural conflicts, the various features of the embodiments disclosed herein may be combined with each other in any manner, and the omission of an exhaustive description of such combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for preparing a wear-resistant and anticorrosive bamboo-based coiled material, characterized in that: The wear-resistant and anti-corrosion bamboo-based coiled material includes a bamboo-based coiled material and a carbonized coating sprayed on the surface of the bamboo-based coiled material. The preparation steps of the wear-resistant and anti-corrosion bamboo-based coiled material are as follows: The bamboo material is cleaned and cut to obtain preliminary processing, and then processed by a bamboo flattening machine and an oriented fiber matting machine to obtain bamboo fiber, and the bamboo fiber is acid-treated; A 6%wt glacial acetic acid solution was added to the bamboo fiber and then ball-milled to mix the mixture thoroughly. After wet sizing, the mixture was air-laid and hot-pressed at a temperature of 150°C, a pressure of 8 MPa, and a time of 60 min to obtain a bamboo-based coiled material. The carbonized coating solution is atomized into uniform droplets by an ultrasonic nozzle, sprayed on the surface of the bamboo-based coiled material, and cured to form a bamboo-based coiled material with a carbonized coating; The steps for preparing the carbonized coating are as follows: Pretreatment: Place a certain amount of multi-walled carbon nanotubes in a beaker and treat them with a mixture of 98% concentrated sulfuric acid and concentrated nitric acid in a ratio of 2:

1. Mix the mixture at 60°C for 10 hours. Then, treat the multi-walled carbon nanotubes with a 2 mol / L sodium hydroxide solution and adjust the pH to neutral. Modification treatment: The pretreated multi-walled nanotubes were mixed with a solution of anhydrous ethanol and deionized water, and ultrasonicated for 15 minutes. A silane coupling agent was then added and ultrasonicated for another 10 minutes. After the silane coupling agent treatment, the hydrophobic multi-walled nanotubes became hydrophilic due to the attachment of polar groups, making the multi-walled nanotubes more soluble in various organic solvents. In situ polymerization treatment: The modified multi-walled nanotubes are dried and filtered, and then mixed with an aqueous solution of 0.1 mol / L surfactant and 5% sodium bicarbonate. Polyethylene monomer pellets are added to the mixed solution, and the mixture is blended at a temperature of 183°C and a stirring rate of 80 rpm for 8 minutes to obtain uniformly dispersed microemulsion droplets. The carbon nano / polyethylene composite material is obtained by reaction extrusion using an extruder at a temperature of 200°C and a screw speed of 20 r / min.

2. The method for preparing a wear-resistant and anticorrosive bamboo-based coiled material according to claim 1, characterized in that: The thickness of the bamboo-based coiled material is 1 cm to 2 cm, and the thickness of the carbonized coating is 50-60 μm.

3. The method for preparing a wear-resistant and anticorrosive bamboo-based coiled material according to claim 1, characterized in that: The carbonized coating solution has a viscosity lower than 30 cps and a solid content lower than 30%.

4. The method for preparing a wear-resistant and anticorrosive bamboo-based coiled material according to claim 1, characterized in that: The bamboo material is moso bamboo.

5. The method for preparing a wear-resistant and anticorrosive bamboo-based coiled material according to claim 1, characterized in that: The surfactant is 0.1 mol / L sodium lauryl sulfate.

6. The method for preparing a wear-resistant and anticorrosive bamboo-based coiled material according to claim 1, characterized in that: During the in-situ polymerization process, the mixture solution was subjected to ultrasonic treatment for 20 minutes.

7. The method for preparing a wear-resistant and anticorrosive bamboo-based coiled material according to claim 1, characterized in that: The extruder is a twin-screw extruder.

8. The method for preparing a wear-resistant and anticorrosive bamboo-based coiled material according to claim 1, characterized in that: In the pretreatment step, the acid-treated multi-walled nanotubes are rinsed with a large amount of deionized water, and then treated with a 2 mol / L sodium hydroxide solution to adjust the pH value to neutral.

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