CN116445873A - Method for preparing bamboo material with corrosion resistance, easy repair and fire resistance by magnetron sputtering - Google Patents

Abstract

The invention uses magnetron sputtering to prepare anti-corrosion, easy-to-repair, and fire-resistant bamboo materials. The purpose of the present invention is to solve the problems of long production cycle, single additional function, and poor flame retardancy in the existing methods for preparing fire-resistant wood. Preparation method: 1. Place the bamboo in an atmospheric plasma cleaner for surface cleaning and activation; 2. Put the HBN target in a high-temperature vacuum furnace for calcination; 3. Put the bamboo after plasma cleaning into magnetron sputtering 4. Control the radio frequency sputtering power to 400-600W, the self-bias voltage to 120-160V, feed argon and nitrogen, and continue sputtering the HBN layer on the bamboo surface with the Cu film sputtered. When the present invention prepares the flame retardant film, the sample is in anhydrous, anaerobic, short-term high temperature and high pressure conditions, which is beneficial to the high temperature carbonization of the bamboo surface, and due to the existence of the carbonized layer, it prevents heat and _O from being transmitted inwardly, Enhanced flame retardant effect.

Description

Method for preparing anti-corrosion, easy-to-repair, refractory bamboo by magnetron sputtering

technical field

The invention belongs to the field of improving the function of biomass materials, and in particular relates to a preparation method of fire-resistant bamboo with anti-corrosion, air purification, easy repair and fire resistance.

Background technique

With the rise of the green and low-carbon concept, promoting the efficient utilization of abundant reserves and green and environmentally friendly biomass materials is an important task for my country's energy conservation, emission reduction and environmental protection, which meets the current needs of environmental protection, energy conservation and low-carbon economy. As a renewable, degradable, carbon-neutral biomass resource, bamboo is widely used in furniture manufacturing and architectural decoration due to its light weight, high strength, good thermal insulation, beautiful texture, easy processing, and low energy consumption. . Due to its high hydrocarbon content, it is a kind of flammable material, which can easily cause fire and threaten people's life and property safety. Based on this, it is very important to seek a high-efficiency, energy-saving and convenient bamboo flame-retardant technology to reduce or retard the flame propagation speed and accelerate the carbonization process of the burning surface. The existing flame retardant patented technology is mainly implemented around the following three methods: 1-impregnation method, 2-spraying method, 3-hot pressing method.

Impregnation method: application number: CN202111544814.8, patent name is "A Preparation Method for Composite Flame Retardant Wood", application number: CN202111656895.0, patent name is "A Method for Wood Flame Retardant Treatment", application number: CN202211368353.8, the patent title is "A Bio-based Flame Retardant Unsaturated Polyester for Wood Reinforcement Modification and Its Preparation and Application". Flame retardant, bio-based unsaturated polyester solution, using vacuum impregnation method to inject flame retardant into wood to achieve flame retardant effect. The above patents have the following disadvantages: First, the production efficiency is low, and the solution impregnation of wood requires a bulky impregnation tank. It is difficult to ensure that the flame retardant is evenly distributed inside the wood during the impregnation process. If the impregnation solution has a large molecular weight, it may not even penetrate. to the interior of the wood. Secondly, high pressure and heating need to be applied to the tank during the impregnation process. The pressure is difficult to control and dangerous. Heating will cause the flame retardants to volatilize or react with each other and affect the flame retardant effect. Finally, the impregnation method is only suitable for processing thinner materials or materials with better permeability, and the applicable objects are limited.

Spraying method: application number: CN202211358671.6, the patent name is "A Flame Retardant with Controllable Intumescent Carbon Layer Thickness and Preparation Method of Fire-Retardant Wood", application number: CN202110849790.0, the patent name is "A Biomass Flame retardant, water-based flame retardant coating and its preparation method and application", application number: CN202111037354.X, patent name is "a method for preparing a self-assembled flame retardant coating on wood surface based on two-dimensional material reinforcement", These three patents use starch-based intumescent flame retardants, biomass flame retardants, and layer-by-layer self-assembled two-dimensional material flame-retardant coating methods to coat the flame retardants on the wood surface, and then air-dry and dry. , Moisture balance can get flame retardant wood. The above patents have the following disadvantages: First, the flame-retardant coating prepared by this method has a short timeliness and is suitable for a short-term small fire environment, and cannot achieve high-efficiency flame retardancy for large fires. Secondly, the coating does not have weather resistance and poor ability to resist external damage. In response to changes in temperature and humidity in the external environment, it is prone to natural degradation and damage. Finally, flame retardant coatings often contain phosphorus, nitrogen, boron, ammonium, phosphorus, and triazine compounds, which are toxic and not environmentally friendly.

Hot pressing method: application number: CN202210921430.1, the patent name is "An organic-inorganic hybrid boron nitrogen phosphorus ternary flame-retardant particleboard and its preparation method", application number: CN202211272972.7, the patent name is "a kind of High-strength, flame-retardant, environmentally friendly wood and its preparation method", application number: CN202110188407.1, patent name is "a preparation method of high-strength flame-retardant wood", these three patents mainly use soaking or smearing to make the board and Combination of pre-polymerized flame retardants, and then hot pressing, so that the flame retardant layer and the adhesive layer are cured in the board at the same time. The main disadvantages of the above patents: First, the flame retardant and the adhesive have a synergistic effect. If the amount of the flame retardant is too large, it will affect the bonding effect of the adhesive and reduce the bonding strength of the board. If the amount of adhesive added is too large, it will affect the amount of flame retardant and affect the flame retardant effect. Secondly, thermal expansion and contraction will inevitably occur during the hot-pressing process of the board. If the volume of the board is too large, it will warp and deform easily, thus affecting the flatness. Finally, hot-pressed sheets do not have environmental protection features.

In summary, from the analysis of the existing patents for the preparation of flame-retardant wood materials, there are the following problems: long production cycle, high cost, lack of environmental protection, few additional functions, unstable performance, single research object, etc., and the existing preparation methods except Except for the above three kinds of impregnation, spraying, and hot pressing, there are few reports on the other flame retardant research processes. Based on this, seeking a simple, efficient, multi-functional, and high-value-added method for preparing refractory bamboo has broad application prospects.

Contents of the invention

The purpose of the present invention is to solve the problems of long production cycle, single additional function and poor flame retardancy of the existing method for preparing refractory wood, and to provide a kind of anti-corrosion, air-purifying, easy-to-repair, refractory bamboo material prepared by magnetron sputtering. method and its application.

The present invention uses magnetron sputtering to prepare the method for anti-corrosion, air-purifying, easy-to-repair, refractory bamboo according to the following steps:

1. Place the bamboo in the atmospheric plasma cleaner to clean and activate the surface, control the plasma output power to 200-400W, and the input gas pressure to 0.3-0.6Mpa, use the silencer jet to clean the nozzle, and get the bamboo after plasma cleaning ;

2. Put the HBN (boron nitride) target into a high-temperature vacuum furnace, and calcine it at a temperature of 2000-3000 ° C to obtain a high-purity HBN target;

3. Put the plasma-cleaned bamboo into the magnetron sputtering apparatus, install a high-purity Cu target on the target head, and feed argon gas after vacuuming, control the sputtering power of DC power supply to 100-150W, and the flow rate of argon gas to 20-30sccm, carry out pre-sputtering treatment, adjust the target base distance to 35-40mm, then open the blocking plate and continue the sputtering treatment to obtain bamboo with Cu thin film sputtered;

4. Put the bamboo sputtered with Cu thin film into the magnetron sputtering instrument, install a high-purity HBN target on the target head, and then pass in argon/nitrogen mixed gas after vacuuming, turn on the heating base, and heat until magnetron sputtering Raise the injection cavity to 350-450°C, control the RF sputtering power to 400-600W, self-bias voltage to 120-160V, argon flow rate to 20sccm, nitrogen flow rate to 28-32sccm, perform pre-sputtering treatment for 20 minutes, adjust The base distance of the target is 25-35 mm, and then the blocking plate is opened to continue the sputtering treatment to obtain anti-corrosion, air-purifying, easy-to-repair, fire-resistant bamboo (bamboo with HBN-Cu film sputtered).

The bamboo material sputtered with the HBN-Cu film prepared by the present invention has fire resistance and can be used as a structural material in the field of building construction; the bamboo material sputtered with the HBN-Cu film has the functions of anti-corrosion and air purification and can be used in the field of decoration; Bamboo with HBN-Cu film has easy repair and protective functions, and can be used in the field of ancient building restoration.

The invention utilizes magnetron sputtering technology to prepare functional HBN-Cu nanometer material on the surface of bamboo, and provides a novel preparation method of multifunctional bamboo with anti-corrosion, easy repair, air purification and flame retardancy. The physical and chemical properties of the functional bamboo are stable, and it has the characteristics of many application fields and wide application objects.

Compared with the prior art, the method of the present invention adopts the multifunctional flame-retardant bamboo prepared by magnetron sputtering to include the following beneficial effects:

First of all, in terms of process selection, the traditional methods of dipping, spraying, and hot pressing are abandoned, and the technical characteristics of magnetron sputtering are short production cycle, high efficiency, no pollution, and low energy consumption to prepare multifunctional flame-retardant films on the surface of bamboo.

Secondly, this method is not only suitable for bamboo, but also for wood, straw or other objects that are not suitable for traditional processing methods to prepare flame-retardant films. For example, in the fields of ancient buildings and non-destructive restoration, the sputtering method is used without destroying samples It can be given a functional film.

In addition, when the flame retardant film is prepared, the sample is under the conditions of anhydrous, anaerobic, short-term high temperature and high pressure, which is conducive to the high-temperature carbonization of the bamboo surface, and the surface generates activated carbon while retaining the characteristics of natural bamboo, so that it has the ability to purify the air. Function. Carbonization destroys the water-absorbing functional groups of hemicellulose inside the surface of bamboo, making it less water-absorbing, less expansive, and improving dimensional stability. Also, due to the existence of the carbonized layer, it also prevents the inward transfer of heat and _O2 , enhancing flame retardancy. Effect.

Finally, the HBN thin film prepared by magnetron sputtering has chemical corrosion resistance and is not corroded by inorganic acid and water. Most importantly, due to the anisotropic thermal conductivity of HBN, its in-plane thermal conductivity is 300W/mk, while the The thermal conductivity is only 30W/mk, which can effectively prevent the inward transfer of heat and endow the substrate with flame retardant properties.

Description of drawings

Fig. 1 is the electron micrograph of original bamboo surface in the embodiment;

Fig. 2 is the electron micrograph of the bamboo material that sputters with HBN-Cu layer in the embodiment;

Fig. 3 is the surface topography figure of the bamboo material sputtered with HBN-Cu layer in the embodiment after burning at 300 DEG C for 30s;

Fig. 4 is the Fourier transform infrared spectrogram of the bamboo surface that is sputtered with HBN-Cu layer obtained in the embodiment;

Fig. 5 is the original bamboo surface photo when burning 1s under propane flame in the embodiment;

Fig. 6 is the bamboo surface photo that is sputtered with HBN-Cu layer when burning 1s under propane flame in the embodiment;

Fig. 7 is the original bamboo surface photo when burning 8s under propane flame in the embodiment;

Fig. 8 is the bamboo surface photograph that sputtering has HBN-Cu layer when burning 8s under propane flame in the embodiment;

Fig. 9 is the anti-mildew photo of the bamboo surface with HBN-Cu thin film in original bamboo and sputtering in the embodiment;

Fig. 10 is the electronic micrograph of mechanical scratch damage and sputtering repair of bamboo material sputtered with HBN-Cu film in the embodiment, wherein (A) represents the mechanical scratch damage of bamboo material sputtered with HBN-Cu film, and (B) represents Bamboo sputtered with HBN-Cu film was repaired by sputtering again.

Detailed ways

Specific Embodiment 1: In this embodiment, magnetron sputtering is used to prepare anti-corrosion, air-purifying, easy-to-repair, and refractory bamboo materials according to the following steps:

1. Place the bamboo in the atmospheric plasma cleaner to clean and activate the surface, control the plasma output power to 200-400W, and the input gas pressure to 0.3-0.6Mpa, use the silencer jet to clean the nozzle, and get the bamboo after plasma cleaning ;

2. Put the HBN (boron nitride) target into a high-temperature vacuum furnace, and calcine it at a temperature of 2000-3000 ° C to obtain a high-purity HBN target;

3. Put the plasma-cleaned bamboo into the magnetron sputtering apparatus, install a high-purity Cu target on the target head, and feed argon gas after vacuuming, control the sputtering power of DC power supply to 100-150W, and the flow rate of argon gas to 20-30sccm, carry out pre-sputtering treatment, adjust the target base distance to 35-40mm, then open the blocking plate and continue the sputtering treatment to obtain bamboo with Cu thin film sputtered;

4. Put the bamboo sputtered with Cu thin film into the magnetron sputtering instrument, install a high-purity HBN target on the target head, and then pass in argon/nitrogen mixed gas after vacuuming, turn on the heating base, and heat until magnetron sputtering Raise the injection cavity to 350-450°C, control the RF sputtering power to 400-600W, self-bias voltage to 120-160V, argon flow rate to 20sccm, nitrogen flow rate to 28-32sccm, perform pre-sputtering treatment for 20 minutes, adjust The base distance of the target is 25-35 mm, and then the blocking plate is opened to continue the sputtering treatment to obtain anti-corrosion, air-purifying, easy-to-repair, fire-resistant bamboo (bamboo with HBN-Cu film sputtered).

Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the plasma output power is controlled to be 200W, and the input gas pressure is 0.4Mpa.

Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 1, the diameter of the gun nozzle is 70 mm and the nozzle is cleaned by rotating the gun nozzle.

Embodiment 4: This embodiment differs from Embodiment 1 to Embodiment 3 in that the purity of the HBN target in step 2 is 99.999%.

Embodiment 5: This embodiment is different from Embodiment 1 to Embodiment 4 in that in Step 2, the temperature of 2000° C. is calcined for 1 hour.

Embodiment 6: This embodiment differs from Embodiment 1 to Embodiment 5 in that in Step 3, the sputtering power of the DC power supply is controlled to 100-150 W, the flow rate of argon gas is 20 sccm, and the pre-sputtering treatment is performed for 20 minutes.

Embodiment 7: This embodiment is different from Embodiment 1 to Embodiment 6 in that in step 4, the flow rate of argon gas is controlled to 20 sccm, and the flow rate of nitrogen gas is 30 sccm.

Embodiment 8: This embodiment is different from Embodiment 1 to Embodiment 6 in that in Step 4, the RF sputtering power is controlled to 500W, and the self-bias voltage is 150V.

Embodiment 9: This embodiment differs from Embodiment 1 to Embodiment 8 in that the pre-sputtering time in step 4 is 40 minutes.

Embodiment 10: This embodiment differs from Embodiment 1 to Embodiment 9 in that in step 4, it has anti-corrosion, air purification, easy repair, and the sputtering thickness of the HBN layer in refractory bamboo is 15-40 μm.

Embodiment: In this embodiment, magnetron sputtering is used to prepare anti-corrosion, air-purifying, easy-to-repair, and refractory bamboo materials according to the following steps:

1. Place the bamboo in an atmospheric plasma cleaner, control the plasma output power to 200W, input nitrogen to a pressure of 0.4Mpa, and use a 70mm silencer jet to clean the nozzle to obtain plasma-cleaned bamboo;

2. Put the HBN target (the purity of the boron nitride target is 99.999%) into a high-temperature vacuum furnace, and calcine it at a temperature of 2000°C for 1 hour, so that the B ₂ O ₃ impurities in the target and the surface of the target are adsorbed The substance is completely volatilized to obtain a high-purity HBN target;

3. Put the plasma-cleaned bamboo into the magnetron sputtering apparatus, install a high-purity Cu target (purity higher than 99.99%) on the target head, introduce argon gas after vacuuming, and control the DC power supply sputtering power to 120W , the flow rate of argon gas is 20 sccm, pre-sputtering treatment is carried out for 20 minutes, the target base distance is adjusted to 40mm, and then the blocking plate is opened to continue the sputtering treatment to obtain a bamboo material sputtered with a thickness of 2 μm Cu film;

4. Put the bamboo sputtered with Cu thin film into the magnetron sputtering apparatus again, use high-purity HBN target, put down the barrier plate, evacuate to a vacuum degree of 6×10 ^-4 Pa, and pass in argon/nitrogen Mix gas, turn on the heating substrate, heat until the magnetron sputtering chamber rises to 400°C, control the radio frequency sputtering power to 500W, self-bias to 150V, connect the positive pole to the sputtering vacuum chamber, while the vacuum chamber is grounded, and the negative pole is connected to the sputtering vacuum chamber. On the test piece, the flow rate of argon gas is 20 sccm, and the flow rate of nitrogen gas is 30 sccm. Pre-sputtering treatment is carried out for 20 minutes to clean the impurities on the surface of the target material, and the target base distance is adjusted to 30 mm. The HBN-Cu film is made of bamboo, and the thickness of the HBN layer is 20 μm.

In this embodiment, firstly, the output power of atmospheric plasma cleaning is 200W, the input gas pressure is 0.3Pa, and the processing time is 10min. The process parameters will affect the properties of ions, electrons, active radical components and free radicals.

Secondly, the thickness of the sputtered Cu film is 3-5 μm. Due to the roughness of the bamboo surface itself, the density, roughness and continuity of the film directly sputtered with HBN are not good, which will affect the properties of the film. Therefore, the bamboo and HBN film There must be a uniform film in the middle to reduce the roughness of the bamboo surface. The expansion coefficient, thermal conductivity, and lattice structure of the Cu film are more conducive to the nucleation of HBN and the growth of the film, and the Cu film will make the potential more balanced when the RF sputtering HBN target.

Finally, sputter the HBN target, heat the magnetron sputtering chamber to 350-450°C, control the RF sputtering power to 400-600W, and the self-bias voltage to 120-160V (applying a bias voltage to the substrate can make Ar ⁺ Attracted by the electric field of the substrate, a certain amount of bombardment is produced on the growing film, the size of the bombardment energy is adjusted by controlling the bias voltage, and there is a threshold bias voltage), the flow rate of argon gas is 20sccm, and the flow rate of nitrogen gas is 30sccm (the range of nitrogen gas flow rate Reasonable selection of the film will help reduce the C content of the film, reduce the porosity of the film and make the film more dense), perform pre-sputtering treatment for 20 minutes (remove impurities on the surface of the target, and obtain a higher purity HBN film), adjust the target base distance 30mm (according to the size of the sample, choose the appropriate target base distance, which is conducive to the flatness and uniformity of the film).

Anti-corrosion and air-purifying functions: Since the magnetron sputtering coating process is carried out under short-term high temperature, oxygen-free and water-free conditions, this environment can form a carbonized layer on the surface of bamboo, and the fiber holes in the carbonized layer are dense and concentrated. It is difficult for water to immerse into the bamboo, and the carbonization will decompose all the organic matter on the surface of the bamboo, blocking the nutrient chain necessary for decay, making it antiseptic and prolonging its service life. At the same time, the carbonized layer is also an intermediate in the production of activated carbon, which has the function of purifying air.

Fire-resistant and easy-to-repair function: The fire-resistant function is mainly due to the anisotropic thermal properties of the sputtered HBN layer. The thermal conductivity of the transverse plane and the longitudinal plane are 390W/m/K and 2W/m/K respectively, which can effectively transfer the The input heat is transferred along the surface of the HBN film, limiting the heat conduction in the vertical internal direction, reducing the heat release rate and prolonging the ignition time. When the fireproof HBN layer was prepared by sputtering, the surface of bamboo was carbonized, and the carbonized layer limited the inward transfer of _O2 and heat, slowing down the exothermic reaction.

Easy repair function: Compared with the hot pressing method, the sputtering process does not damage the sample structure, and there is no pressure load during the process. Compared with the spraying method, the sputtering method is applicable to a wide range of objects. For ancient buildings, ancient decorations, and special shaped hollow structure samples, the sputtering method can be used for processes that cannot be realized by the spraying method, and the prepared film is more uniform.

When burning for 1s, the bamboo material sputtered with HBN-Cu film (Fig. 6) is compared with the original bamboo material (Fig. 5). The surface of the original bamboo material has turned black in appearance, while the surface of the bamboo material sputtered with HBN-Cu film still appears Original white color of HBN film. When burning for 8s, the degree of burning of the original bamboo is relatively large, and the surface of the sample is completely engulfed by the flame. The surface of bamboo sputtered with HBN-Cu thin film turned slightly black, and the flame was not completely ignited.

Fig. 9 Experimental conditions for anti-mildew: Escherichia coli is used as the test strain, and the antibacterial property of the sample is tested by the zone of inhibition method.

It can be seen from Figure 9 that many colonies grew on the surface of untreated bamboo, the surface turned black, and was severely eroded by mold. No obvious colony corrosion was found on the bamboo sputtered with HBN-Cu film, indicating that it has a certain antibacterial effect.

Figure 10 Scratch damage test conditions: a 500g heavy weight was applied to the surface of the sample, and the HBN film was repaired by sputtering on the surface of coarse sandpaper for 50 cm.

It can be seen from Figure 10 that after the scratches on the surface of the HBN-Cu film are damaged, the sputtering method can be selected again to repair the uneven damaged surface without destroying the sample. After the repair, the surface is even and smooth, and the roughness is significantly reduced.

Claims (10)

1. adopt magnetron sputtering to prepare the method that has anticorrosion, easy repair, refractory bamboo, it is characterized in that this preparation method realizes according to the following steps: 1. Place the bamboo in the atmospheric plasma cleaner to clean and activate the surface, control the plasma output power to 200-400W, and the input gas pressure to 0.3-0.6Mpa, use the silencer jet to clean the nozzle, and get the bamboo after plasma cleaning ; 2. Put the HBN target material into a high-temperature vacuum furnace and calcine it at a temperature of 2000-3000 ° C to obtain a high-purity HBN target; 3. Put the plasma-cleaned bamboo into the magnetron sputtering apparatus, install a high-purity Cu target on the target head, and feed argon gas after vacuuming, control the sputtering power of DC power supply to 100-150W, and the flow rate of argon gas to 20-30sccm, carry out pre-sputtering treatment, adjust the target base distance to 35-40mm, then open the blocking plate and continue the sputtering treatment to obtain bamboo with Cu thin film sputtered; 4. Put the bamboo sputtered with Cu thin film into the magnetron sputtering instrument, install a high-purity HBN target on the target head, and then pass in argon/nitrogen mixed gas after vacuuming, turn on the heating base, and heat until magnetron sputtering Raise the injection cavity to 350-450°C, control the RF sputtering power to 400-600W, self-bias voltage to 120-160V, argon flow rate to 20sccm, nitrogen flow rate to 28-32sccm, perform pre-sputtering treatment for 20 minutes, adjust The base distance of the target is 25-35 mm, and then the blocking plate is opened to continue the sputtering treatment to obtain anti-corrosion, air-purifying, easy-to-repair, fire-resistant bamboo. 2. adopt magnetron sputtering according to claim 1 to prepare the method that has anticorrosion, easy repair, refractory bamboo material, it is characterized in that the control plasma output power is 200W in the step 1, and input gas pressure is 0.4Mpa. 3. adopting magnetron sputtering according to claim 1 to prepare has anticorrosion, easy repair, the method for refractory bamboo material, it is characterized in that adopting gun nozzle diameter in the step 1 is that the 70mm silencer jet rotary gun nozzle cleans. 4. adopt magnetron sputtering according to claim 1 to prepare the method for having anticorrosion, easy repair, refractory bamboo material, it is characterized in that the purity of HBN target is 99.999% in the step 2. 5. The method for preparing anti-corrosion, easy-to-repair, fire-resistant bamboo by magnetron sputtering according to claim 1, characterized in that in step 2, the temperature is calcined at 2000° C. for 1 hour. 6. adopt magnetron sputtering according to claim 1 to prepare the method that has anticorrosion, easy repair, refractory bamboo material, it is characterized in that in step 3, the sputtering power of DC power supply is controlled to be 100～150W, and the argon gas flow is 20sccm, carries out Pre-sputter treatment for 20 minutes. 7. adopt magnetron sputtering according to claim 1 to prepare the method for having anticorrosion, easy repair, refractory bamboo material, it is characterized in that in the step 4, the control argon flow rate is 20sccm, and the nitrogen flow rate is 30sccm. 8. adopt magnetron sputtering according to claim 1 to prepare the method for having anticorrosion, easy repair, refractory bamboo material, it is characterized in that in the step 4, the control radio frequency sputtering power is 500W, and self-bias is 150V. 9. adopt magnetron sputtering according to claim 1 to prepare the method for having anticorrosion, easy repair, refractory bamboo material, it is characterized in that the pre-sputtering time in step 4 is 40min. 10. adopt magnetron sputtering according to claim 1 to prepare the method that has anticorrosion, easy repair, fire-resistant bamboo material, it is characterized in that having anticorrosion, air purification, easy repair, the sputtering thickness of HBN layer in the fire-resistant bamboo material in step 4 15 to 40 μm.