Bamboo-based composite material unmanned aerial vehicle radome and manufacturing method thereof

Abstract

The invention discloses a bamboo-based composite unmanned aerial vehicle radome and a manufacturing method thereof.The radome comprises a cover-shaped body and an extension part, the peripheral wall of the tail end of the cover-shaped body integrally extends to form a limiting ring, one end of the extension part is arranged and riveted to the peripheral wall of the limiting ring in a sleeving mode, and the other end of the extension part extends outwards in a divergent mode; the cover-shaped main body is formed by a cover-shaped braided fabric formed by a bamboo fiber reinforced resin matrix composite material, and the extension part is formed by any one of an extension braided fabric formed by the bamboo fiber reinforced resin matrix composite material or an extension layering structure formed by the bamboo fiber reinforced resin matrix composite material; a plurality of layers of cover-shaped braided fabric, extension braided fabric and extension layering structures are laid and stacked according to angles, and the radome is obtained through bamboo material treatment, bamboo material preparation, bamboo material weaving and layering, vacuum resin filling and post-treatment. The radome not only has the characteristics of light weight and high strength, but also is relatively low in cost, good in environmental protection performance and good in wave transmission rate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of composite materials, and particularly relates to a bamboo-based composite material unmanned aerial vehicle radar cover and a manufacturing method thereof. BACKGROUND

[0002] At present, the unmanned aerial vehicle radar cover needs to have excellent electromagnetic wave transmission, light weight, and structural strength, rigidity and shear performance required to withstand aerodynamic load. Although the mainstream high-performance synthetic fiber such as carbon fiber / glass fiber reinforced resin matrix composite material can meet part of the performance, it has problems of high cost of raw materials and manufacturing, high environmental burden in the production process, that is, high energy consumption, high emission, and difficult recycling. Although seeking low-cost, renewable and environmentally friendly materials as alternative reinforcing materials is an important direction, but its application in high-performance unmanned aerial vehicle radar cover faces the integration problem: how to realize the functional partition manufacturing of the main cover body and the extension part through effective process, how to accurately control the volume content ratio of each component in the environmentally friendly material to balance the performance and avoid becoming a performance short board. SUMMARY

[0003] The present application aims at the above-mentioned deficiencies, and provides a bamboo-based composite material unmanned aerial vehicle radar cover and a manufacturing method thereof, so that the radar cover not only has the characteristics of light weight and high strength, but also has low cost, good environmental performance and good wave transmission rate.

[0004] The present application provides the following technical scheme: a bamboo-based composite material unmanned aerial vehicle radar cover, comprising: A cover-shaped main body in a semi-spherical shape and having a convex arc surface, the convex arc surface tail end outer peripheral wall integrally extending to form a limiting ring; An extension part, one end of which is sleeved and riveted to the outer peripheral wall of the limiting ring, and the other end extends outward in a divergent manner; The cover-shaped main body is composed of a cover-shaped woven fabric formed by a plain or twill weaving process of a bamboo fiber reinforced resin matrix composite material; The extension part is composed of any one of the following: An extension woven fabric formed by a plain or twill weaving process of a bamboo fiber reinforced resin matrix composite material; An extension layer structure formed by a bamboo fiber reinforced resin matrix composite material according to the required shape of the extension part; The cover-shaped woven fabric, the extension woven fabric and the extension layer structure are laid and stacked in several layers according to the basis of forming isotropic layers and the layer angle providing key rigidity, strength and shear performance control ability for structural design; In the bamboo fiber reinforced resin matrix composite material, the volume content of the bamboo matrix is 45-55%, and the volume content of the resin matrix is 45-55%.

[0005] As an improvement, the number of layers of the extension woven fabric or the extension layer structure and the cover-shaped woven fabric is 3-15 layers, and the layer angle is 0°, ±45° or 90°, so that the longitudinal tensile strength of the extension layer structure is ≥90MPa, the shear strength is ≥20MPa, the longitudinal tensile strength of the extension woven fabric and the cover-shaped woven fabric is ≥55MPa, and the shear strength is ≥35MPa.

[0006] As an improvement, the resin matrix is any one of an epoxy resin and a bismaleimide resin.

[0007] As an improvement, the bamboo fibers in the bamboo fiber reinforced resin matrix composite are processed by taking the outermost surface of 0.3mm-0.5mm thick of the bamboo green of the flattened bamboo by planing, and then making a continuous bamboo fiber sheet.

[0008] As an improvement, the bamboo fiber sheet is cut along the fiber direction to form bamboo strips or bamboo sheets, the thickness of the bamboo strip is 0.1-0.5mm, the width is 3-8mm, and the length is 50-1000mm, the thickness of the bamboo sheet is 0.1-0.5mm, the width is 20-500mm, and the length is 500-1000mm.

[0009] According to any one of the above-mentioned manufacturing methods of the bamboo-based composite unmanned aerial vehicle radar cover, the method specifically comprises the following steps: S1: The bamboo fiber sheet is sequentially subjected to degreasing by acetone Soxhlet extraction, treatment with 3-7wt% NaOH solution at 50-70℃ for 1-3h, and KH-550 silane coupling agent grafting; S2: The bamboo fiber sheet is cut along the fiber direction to form bamboo strips with a width of 3-8mm and bamboo sheets with a width of 20-500mm; S3: The cover-shaped main body is formed by weaving the bamboo strips into a cover-shaped woven fabric and stacking a plurality of layers on the cover-shaped main body mold as required, and the extension part is formed by weaving the bamboo strips into an extension woven fabric and stacking a plurality of layers on the extension part mold as required, or arranging the bamboo sheets into an extension layer structure according to the required shape of the extension part and stacking a plurality of layers on the extension part mold as required; S4: A vacuum bag is packaged on the extension woven fabric or the extension layer structure and the cover-shaped woven fabric, and resin is drawn into the vacuum bag under the condition of vacuum negative pressure of –0.09Mpa to –0.1MPa by a vacuum machine, so that the resin fully infiltrates the bamboo fibers, and the impregnation time is ≥30min; S5: The product obtained in S4 is placed in a heating instrument, and the temperature is gradiently increased to 80-140℃, and the product is cured and formed under the condition of maintaining the vacuum in the vacuum bag, and the curing time is 2-6 hours, to obtain the cover-shaped main body and the extension part; S6: The formed cover-shaped main body and the extension part are trimmed, polished and coated with an anti-UV coating.

[0010] As an improvement, the resin is applied to the bamboo woven fabric or bamboo sheet obtained by weaving bamboo strips before the process of stacking the layers in step S3, or a resin film formed by the resin is inserted between each layer of bamboo woven fabric or bamboo sheet to ensure that the resin matrix fully infiltrates the bamboo woven fabric or bamboo sheet.

[0011] As an improvement, in step S5, the temperature is increased to 110°C at a rate of 1-5°C / min and held for 0.5-1.5 hours, and then increased to 130°C at a rate of 1-5°C / min and held for 1.5-2.5 hours.

[0012] Compared with the prior art, the advantages of the present application are: The bamboo fiber reinforced resin matrix composite unmanned aerial vehicle radar cover realizes comprehensive advantages through structural partition design and synergistic innovation of bamboo fiber reinforced resin matrix composite. The semi-spherical cover-shaped main body adopts plain weave or twill weave bamboo strip composite material, so that it can be better laid and attached, and excellent electromagnetic wave transmission performance is ensured, and the cover-shaped main body and the extension part provide adjustable stiffness, strength and shear performance through quasi-isotropic layer, i.e. 0° / ±45° / 90°, to meet the bearing requirement. The bamboo matrix volume content is accurately controlled within the range of 45-55%, combined with a specific bamboo processing process, i.e. taking the green layer to make fiber sheet, degreasing, alkali treatment, silane coupling agent modification and vacuum assisted resin impregnation curing process, so that the material density is significantly lower than that of traditional carbon fiber / glass fiber composite material, the specific strength is improved, and lightweight and high strength are realized. Bamboo is a renewable resource, which greatly reduces environmental load and is environmentally friendly in production process. The raw material cost is lower than that of carbon fiber, and the economy is outstanding. The dielectric constant and loss tangent value of bamboo fiber composite material are better than those of carbon fiber, which ensures low density comparable to carbon fiber while improving wave transmission rate and maintaining electromagnetic performance designability. After surface treatment and close combination with resin matrix, i.e. epoxy resin / bismaleimide, and cooperation with UV resistant coating, the product has excellent weather resistance, fatigue resistance and long-term use stability, which comprehensively solves the problem that the cost, environmental protection and performance of traditional radar cover are difficult to balance. BRIEF DESCRIPTION OF DRAWINGS

[0013] The present application will be further described in detail below in combination with the drawings and specific embodiments: Figure 1 is a schematic diagram of the structure of the unmanned aerial vehicle radar cover; Figure 2 is a schematic diagram of the structure of the cover-shaped main body; Figure 3 is a schematic diagram of the structure of the bamboo fiber reinforced resin matrix composite and the mold; Figure 4 is a schematic diagram of the structure of the bamboo fiber reinforced resin matrix composite and the mold; Figure 5The tensile direction of the bamboo fiber reinforced resin matrix composite unmanned aerial vehicle radar cover is tested, wherein the 1 direction is the 0° direction, and the 2 direction is the 90° direction.

[0014] The marks in the above figure are respectively: 1, cover-shaped body; 2, extension part. DETAILED DESCRIPTION

[0015] As shown in the drawings, Figures 1 to 4 A bamboo-based composite unmanned aerial vehicle radar cover, comprising a cover-shaped body and an extension part, the cover-shaped body is hemispherical and has a convex arc surface, the outer peripheral wall of the tail end of the convex arc surface integrally extends to form a limiting ring, one end of the extension part is sleeved and riveted on the outer peripheral wall of the limiting ring, and the other end extends outward in a divergent manner, the cover-shaped body is composed of a cover-shaped woven fabric formed by a plain or twill weaving process of a bamboo fiber reinforced resin matrix composite material, the extension part is composed of an extension woven fabric formed by a plain or twill weaving process of a bamboo fiber reinforced resin matrix composite material or an extension layer structure formed by a bamboo fiber reinforced resin matrix composite material according to the required shape of the extension part, and the cover-shaped woven fabric, the extension woven fabric and the extension layer structure are laid and stacked in several layers according to the basis of forming quasi-isotropic layers and the layer angle which provides key stiffness, strength and shear performance regulation ability for structural design. In the bamboo fiber reinforced resin matrix composite material, the bamboo base volume content is 50%, and the resin matrix volume content is 50%.

[0016] The bamboo strips and bamboo pieces are cut along the fiber direction after being processed into continuous bamboo fiber sheets by treating the outermost surface of 0.3mm-0.5mm thick bamboo green of the planed flat bamboo, the thickness of the bamboo strip is 0.3mm, the width is 5mm, and the length is 150mm, and the thickness of the bamboo piece is 0.3mm, the width is 150mm, and the length is 500mm.

[0017] The surface of the composite material prepreg is provided with a protective layer system composed of a polyethylene film barrier layer covering the upper end of the resin matrix surface and a release paper layer covering the lower end of the resin matrix surface.

[0018] The number of layers of the extension woven fabric or the extension layer structure and the cover-shaped woven fabric is 3, the longitudinal tensile strength of the extension woven fabric and the cover-shaped woven fabric is 100MPa, and the shear strength is 40MPa.

[0019] The resin matrix is an epoxy resin.

[0020] The bamboo fiber reinforced resin matrix composite material selects one or more of 0°, ±45° and 90° to form the extension layer structure.

[0021] A manufacturing method of a bamboo-based composite unmanned aerial vehicle radar cover, characterized in that it specifically comprises the following steps: S1: The bamboo fiber sheet is sequentially subjected to defatting by acetone Soxhlet extraction method, treatment in 5wt% NaOH solution at 60℃ for 2h, and KH-550 silane coupling agent grafting; S2: The bamboo fiber sheet with a thickness of 0.3mm, a width of 200mm, and a length of 1000mm is cut along the fiber direction to form bamboo strips with a thickness of 0.3mm, a width of 5mm, and a length of 150mm, and bamboo strips with a thickness of 0.3mm, a width of 150mm, and a length of 500mm; S3: The cover-shaped body is formed by weaving the bamboo strips into a cover-shaped woven fabric and laying and stacking a plurality of layers on the cover-shaped body mold as needed, and the extension part is formed by weaving the bamboo strips into an extension woven fabric and laying and stacking a plurality of layers on the extension part mold as needed, or arranging the bamboo pieces into an extension layer structure according to the required shape of the extension part and laying and stacking a plurality of layers on the extension part mold as needed; Wherein, before the laying and stacking process, the resin is applied to the bamboo strip woven fabric obtained by weaving the bamboo strips or the bamboo pieces, or a resin adhesive film formed by the resin is inserted between each layer of the bamboo strip woven fabric or the bamboo sheet to ensure that the resin matrix fully infiltrates the bamboo strip woven fabric or the bamboo pieces; S4: The vacuum bag is packaged on the bamboo strip woven fabric or the bamboo pieces, and the resin is drawn into the vacuum bag under the vacuum negative pressure of -0.09Mpa to -0.1MPa by the vacuum machine, so that the resin fully infiltrates the bamboo strip woven fabric or the bamboo pieces, and the impregnation time is ≥30min; S5: The product obtained in S4 is placed in a heating instrument, and the temperature is gradually increased to 100℃ under the condition that the vacuum in the vacuum bag is maintained, and the curing time is 4 hours, to obtain the cover-shaped body and the extension part; S6: The formed cover-shaped body and extension part are trimmed, polished, and coated with an anti-UV coating.

[0022] I. According to the test standard of national standard SJ20512-1995, the wave transmissivity of the bamboo-based composite material obtained by the present application in the frequency band of 25GHz-40GHz is compared with that of glass fiber composite material, quartz fiber composite material, and carbon fiber composite material as shown in the following table, and the data is the average wave transmissivity of the sample in the frequency band. At the same time, the densities of the materials are compared in the table.

[0023] From the above table, it can be seen that, The core advantage of the bamboo fiber reinforced resin matrix composite material (hereinafter referred to as "bamboo fiber reinforced resin matrix composite material") is the unique combination of excellent lightweight performance and acceptable wave transmissivity, as well as its environmental protection and cost potential. The specific comparison is as follows: 1. Extremely lightweight performance The density of bamboo fiber reinforced resin matrix composite material is 1.14 g / cm³, which is much lower than the density of glass fiber 2.2 g / cm³ and quartz fiber 1.95 g / cm³, and even lower than the density of carbon fiber 1.68 g / cm³. For unmanned aerial vehicles, weight reduction is a constant theme. The lightweight of the radome as the front end of the aircraft non-bearing or secondary bearing structure can directly improve the payload of the unmanned aerial vehicle, prolong the endurance time and improve the flight maneuverability. Bamboo fiber reinforced resin matrix composite material has a decisive advantage in this index.

[0024] 2. Meet the requirements of wave-transparent performance and good comprehensive cost performance The wave-transparent rate of bamboo fiber reinforced resin matrix composite material is 53.1% when laid 2 layers, which is much higher than that of carbon fiber 1.8%, but lower than that of glass fiber 91.6% and quartz fiber 96.3%. Compared with carbon fiber: carbon fiber is completely not suitable for radar cover application due to its poor wave-transparent performance caused by its electrical conductivity. Bamboo fiber reinforced resin matrix composite material fundamentally solves the shielding problem of carbon fiber and has the basic conditions as a wave-transparent material. Compared with glass fiber and quartz fiber: although the wave-transparent rate is lower in numerical value, it needs to be considered in combination with the application scenario. For some radar / seeker systems carried by unmanned aerial vehicles with high power or not extremely demanding on the wave-transparent rate of the cover body, the wave-transparent rate of 53.1% may already meet the use requirements. Its huge lightweight advantage can make up for the lack of wave-transparent rate and provide an excellent performance to weight ratio.

[0025] And the performance of quartz fiber is the best but the cost is extremely high. The glass fiber has lower cost but larger weight. Bamboo fiber has a wide source and a short growth cycle, and its raw material cost has a potential huge advantage. Although the current processing process may increase the cost, from the long-term and sustainable development perspective, the cost reduction space and comprehensive cost performance are worth looking forward to.

[0026] 3. Unique environmental protection and sustainability In the context of global emphasis on green manufacturing and sustainable development, bamboo, as a rapidly renewable and biodegradable natural resource, has environmental properties that glass fiber and quartz fiber derived from ore and carbon fiber prepared with high energy consumption do not have. This feature meets the current policy direction and market demand, providing an additional value dimension for technology.

[0027] 4. Effective interface treatment and feasible manufacturing process Through the degreasing, alkali treatment and silane coupling agent grafting process of bamboo fiber, the common technical problem of poor interface combination between natural fiber and polymer matrix is successfully solved, which lays a foundation for obtaining good mechanical properties, i.e. longitudinal tensile strength 100 MPa and shear strength 40 MPa.

[0028] The feasibility and effectiveness of the process ensure the reliability and repeatability of the performance of bamboo fiber reinforced resin matrix composites. The vacuum bag infusion + heat curing process adopted is compatible with the general process of aerospace composites, and is easy to popularize and implement.

[0029] II. Under the steps described in S4, S5, curing at 100℃ for 4h, the shear strength of the bamboo fiber reinforced composite cover body under different lay-up and the tensile strength and shear strength of the extension part are tested as shown in the following table, and the tensile direction is as shown in Figure 5 From the above table, we can know that: 1. Analysis of the extension part: The extension part is usually used for connection and fixation, and may need to bear complex loads.

[0030] When the lay-up scheme is 0° / 90° / 0°, the tensile strength is the highest, reaching 137 MPa, but the shear strength is the lowest, reaching 25 MPa. This is a cross-lay-up design, and the 0° layer mainly provides axial (longitudinal) tensile strength, and the 90° layer provides transverse support and stability. This lay-up method maximizes the advantages of the longitudinal high performance of bamboo fiber, so the tensile strength is the highest. However, due to the absence of ±45° layers, the contribution of fibers to resisting in-plane shear force is small, and the shear strength mainly depends on the weaker resin matrix, so the shear strength is the lowest. It is suitable for extension parts that mainly bear unidirectional tensile load and have little shear load.

[0031] When the lay-up scheme is 0° / 45° / 90° / -45°, the tensile strength is relatively high, reaching 112 MPa, and the shear strength is very high, reaching 48 MPa. This is a standard quasi-isotropic lay-up. It contains 0°, 90° to bear axial and transverse loads and ±45° to mainly bear shear loads of all key angle layers. This lay-up method makes the mechanical properties of the material in all directions tend to be balanced, with good tensile properties and excellent shear resistance, and the comprehensive mechanical properties are the best. This is the most general and reliable lay-up method, suitable for extension parts that need to bear multidirectional loads or the direction of the load is not clear, providing the best comprehensive performance and safety margin.

[0032] ​The tensile strength is the lowest at 73 MPa and the shear strength is the highest at 55 MPa when the layering scheme is 45°, -45°. This is an angular layering design. The fiber direction of ±45° is very advantageous to resist in-plane shear stress, so the shear strength reaches the peak. However, the fiber direction is at a 45° angle with the main load direction (assuming 0°), and its efficiency to bear axial tensile load is greatly reduced, so the tensile strength mainly depends on the resin matrix, and the value is the lowest. It is suitable for specific cases where the extension part needs to bear a large shear load, but the tensile load requirement is not high.

[0033] 2. Analysis of the cover body: The mechanical performance requirements of the cover body as the main wave-transparent structure of the radome may be slightly different from those of the connecting part.

[0034] The tensile strength is 100 MPa and the shear strength is 42 MPa when the layering scheme is 0° / 45° / 90° / -45°. The result trend is consistent with that of the same layering of the extension part. This again proves the ability of quasi-isotropic layering to provide balanced and reliable performance on complex curved surface structures.

[0035] The tensile strength is 60 MPa and the shear strength is 49 MPa when the layering scheme is 45°, -45°. The result is consistent with that of the same layering of the extension part, showing high shear and low tensile characteristics. For the main body of the radome, this layering may be used in areas that need special attention to torsion resistance or wind shear.

[0036] By changing the layering angle of bamboo fibers, the mechanical properties of bamboo-based composites can be effectively regulated like traditional composites, so that the tensile strength can be designed between 60-137 MPa and the shear strength can be designed between 25-55 MPa. This designability is another core advantage of the invention in addition to lightweight, environmental protection, and wave transparency, providing great flexibility and reliability for the structural optimization design of the UAV radome, significantly improving the innovation height and application value of the patented technology.

[0037] The above only describes the best embodiment of the present application, but cannot be understood as a limitation on the claims. The present application is not limited to the above embodiments, and the specific structure allows changes. Any changes made within the protection scope of the independent claims of the present application are within the protection scope of the present application.

Claims

1. A bamboo-based composite material radome for unmanned aerial vehicles, characterized in that, include: The cap-shaped main body is hemispherical and has a convex arc surface, with the outer peripheral wall of the convex arc surface extending integrally to form a limiting ring; The extension has one end fitted and riveted to the outer peripheral wall of the limiting ring, and the other end extends outward in a divergent manner. The cover-shaped main body is composed of a cover-shaped woven fabric formed by plain or twill weaving process of bamboo fiber reinforced resin matrix composite material; The extension is constructed in any of the following ways: Bamboo fiber reinforced resin matrix composite material is an extended woven fabric formed by plain or twill weaving process; Bamboo fiber reinforced resin matrix composite material is formed into an extended layup structure according to the required shape of the extended portion; The cover-shaped woven fabric, extended woven fabric, and extended ply structure are laid and stacked in several layers according to the ply angle that forms the basis of quasi-isotropic ply and provides key stiffness, strength, and shear performance control capabilities for structural design. In the bamboo fiber reinforced resin matrix composite material, the bamboo matrix volume content is 45-55%, and the resin matrix volume content is 45-55%.

2. The bamboo-based composite material radome for unmanned aerial vehicles according to claim 1, characterized in that: The number of layers of the extended braid or extended ply structure and the cover braid is 3-15, and the ply angle is 0°, ±45° or 90°, such that the longitudinal tensile strength of the extended ply structure is ≥90MPa and the shear strength is ≥20MPa, and the longitudinal tensile strength of the extended braid or the cover braid is ≥55MPa and the shear strength is ≥35MPa.

3. The bamboo-based composite material radome for unmanned aerial vehicles according to claim 1, characterized in that: The resin matrix is ​​either epoxy resin or bismaleimide resin.

4. The bamboo-based composite material radome for unmanned aerial vehicles according to claim 1, characterized in that: The bamboo fiber in the bamboo fiber reinforced resin matrix composite material is made by processing the outermost 0.3mm-0.5mm thick bamboo green layer of flattened bamboo to form continuous bamboo fiber sheets.

5. The bamboo-based composite material radome for a UAV according to claim 4, characterized in that: The bamboo fiber sheet is cut along the fiber direction to form bamboo strips or bamboo pieces. The bamboo strips are 0.1-0.5mm thick, 3-8mm wide, and 50-1000mm long. The bamboo pieces are 0.1-0.5mm thick, 20-500mm wide, and 500-1000mm long.

6. The method for manufacturing a bamboo-based composite material radome for a UAV according to any one of claims 1-5, characterized in that, Specifically, the steps include the following: S1: Bamboo fiber sheets are successively degreased by acetone Soxhlet extraction, treated with 3-7wt% NaOH solution at 50-70℃ for 1-3h, and grafted with KH-550 silane coupling agent. S2: Cut bamboo fiber sheets along the fiber direction to form bamboo strips with a width of 3-8mm and bamboo pieces with a width of 20-500mm; S3: The cover-shaped main body is formed by weaving bamboo strips into a cover-shaped woven material and laying and stacking several layers on the cover-shaped main body mold as required. The extension is formed by laying and stacking several layers of the extension woven material woven from bamboo strips on the extension mold as required, or by laying and stacking several layers of the extension layer structure of bamboo strips arranged according to the required shape of the extension on the extension mold as required. S4: Seal the vacuum bag onto the extended woven fabric or extended ply structure and cover woven fabric, and use a vacuum machine to draw the resin into the vacuum bag under a vacuum negative pressure of -0.09Mpa to -0.1MPa, so that the resin can fully impregnate the bamboo fiber, and the impregnation time is ≥30min. S5: Place the product obtained in S4 in a heating instrument, gradually increase the temperature to 80-140℃, and solidify it under the condition of maintaining a vacuum inside the vacuum bag. The solidification time is 2-6 hours to obtain the cap-shaped main body and the extension. S6: Trim, polish and coat the formed cap-shaped body and extensions with an anti-UV coating.

7. The method for manufacturing a bamboo-based composite material radome for a UAV according to claim 6, characterized in that: In step S3, before the layering process, resin is applied to the bamboo woven material or bamboo strips, or the resin film formed by the resin is interspersed between each layer of bamboo woven material or bamboo strips to ensure that the resin matrix fully penetrates the bamboo woven material or bamboo strips.

8. The method for manufacturing a bamboo-based composite material radome for a UAV according to claim 6, characterized in that: In step S5, the temperature is increased to 110°C at a rate of 1-5°C / min and held for 0.5-1.5 hours, and then increased to 130°C at a rate of 1-5°C / min and held for 1.5-2.5 hours.

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