1737 results about "Fiber reinforcement" patented technology

A fishing line guide mountable to a fishing rod body to guide a fishing line, the fishing line guide includes a foam portion made of foamed resin, and a reinforced resin portion made of fiber-reinforced resin and covering a part of the foam portion.

The invention discloses an underground chamber structure of a compressed air energy storage power station, a construction method and a parameter optimization design method, and belongs to the field of compressed air energy storage and underground space engineering. A hard rock stratum building chamber is determined through systematic site selection investigation, a high-performance concrete lining (containing fiber reinforcement) and a polyurethane buffer layer are adopted to synergistically improve the stability, and a vinyl ester resin-based glass fiber reinforced plastic three-layer composite structure serves as a sealing layer (including a bonding layer, a reinforcement layer and an impermeable layer); the processes of sand blasting pretreatment, stepped joint and the like are combined to guarantee the sealing performance; meanwhile, on the basis of a finite element model, structural parameters are optimized by taking the lowest whole life cycle cost as a target and taking strength, deformation, leakage rate and the like as constraints, and a recommended parameter combination of each structural layer is obtained in combination with an orthogonal experimental design and an improved genetic algorithm. The method is suitable for various geological conditions, the safety, economical efficiency and adaptability of the compressed air energy storage power station are effectively improved, and the method is suitable for large-scale application and popularization.

The invention discloses solid waste-based fiber reinforced sprayed concrete and a preparation method thereof, and belongs to the technical field of concrete. The sprayed concrete is prepared from the solid waste-based cementing material, the fine aggregate, the basalt fiber, the water reducing agent, the accelerator and the water, the slag, the carbide slag, the fly ash and the cement serve as the solid waste-based cementing material, part of the cement is replaced by the fly ash and the slag, the slag can make up for the deficiency of the activity of the fly ash in the early stage, the early strength is rapidly improved, and the early strength is improved. The rebound rate is reduced; the fly ash further densifies the matrix in the later period by means of continuous pozzolanic reaction, so that the durability is enhanced; the basalt fibers, the accelerator and the water reducing agent are mixed, the hydration process is optimized, and the synergistic enhancement effect of the fibers and a matrix is achieved, so that the generation of early cracks and the development of later cracks are inhibited, and finally the sprayed concrete with high strength, high toughness and low shrinkage is obtained.

The invention discloses a composite material float bowl and a multifunctional floating mat structure, the composite material float bowl comprises a float bowl body formed by a fiber reinforced material, the float bowl body is of a cylindrical structure extending in the horizontal direction, and a float bowl cavity of a sealed cavity structure is formed in the float bowl body; a mounting plane of a plane structure is formed at the top of the buoy body, the mounting plane extends to the two ends of the buoy body in the length direction, and the two sides, in the width direction of the buoy body, of the mounting plane protrude to form mounting flanges. Due to the fact that the whole top face of the buoy body is the installation plane of a plane structure, assembling connection with an upper structure is facilitated, all the installation planes and the installation turnups can support the upper structure, a huge supporting area is provided for the upper structure, the bearing capacity and the bearing stability of the multifunctional floating mat structure are improved, and the service life of the multifunctional floating mat structure is prolonged. And the universality is improved. The multifunctional floating mat structure can be used as various water platforms and is good in universality, high in structural strength and good in weather resistance.

The invention relates to a fiber-reinforced aerogel composite material containing a carbon and titanium dioxide biphase hybrid opacifying agent as well as a preparation method and application of the fiber-reinforced aerogel composite material. The fiber reinforced aerogel composite material containing the carbon and titanium dioxide dual-phase hybrid opacifying agent comprises an inorganic aerogel matrix, wherein a reinforced fiber skeleton and the carbon / titanium dioxide dual-phase hybrid opacifying agent are dispersed in the inorganic aerogel matrix; the carbon / titanium dioxide biphase hybrid opacifying agent comprises a titanium dioxide shell layer and carbon / titanium dioxide core-shell structure particles, wherein the surface of a reinforced fiber skeleton is coated with the titanium dioxide shell layer in situ; gaps of the reinforced fiber skeleton are filled with the carbon / titanium dioxide core-shell structure particles. The problem to be solved is to construct a two-phase hybrid shading system in which carbon / titanium dioxide core-shell particles and a titanium dioxide coating layer on the fiber surface are combined through one-step in-situ synthesis, so that the heat insulation capacity of the composite material in a high-temperature environment is synergistically improved.

The invention relates to the technical field of polymer composite materials, in particular to a carbon fiber reinforced nylon 66 / polyphenylene sulfide composite material and a preparation method thereof.The carbon fiber reinforced nylon 66 / polyphenylene sulfide composite material is prepared from, by weight, 40-55 parts of nylon 66, 30-45 parts of polyphenylene sulfide, 15-30 parts of carbon fibers, 5-6 parts of compatilizer, 0.8-1.2 parts of antioxidant and 3-4 parts of flexibilizer, the flexibilizer is ethylene-octylene copolymer grafted maleic anhydride, the grafting rate is 1.2-1.5%, the flexibilizer is ethylene-octylene copolymer grafted maleic anhydride, the grafting rate is 0.8-1.0%, and the antioxidant is a mixture of an antioxidant 1010 and an antioxidant 168 according to a mass ratio of 1: 1. The composite material prepared by the invention is suitable for medium-high temperature scenes, not only solves the problems of insufficient high temperature resistance and poor mechanical properties of traditional materials, but also has good processability and environmental tolerance.

The invention discloses an ultra-flexible stretchable dimming film and a preparation method thereof, and relates to the technical field of dimming films, and the ultra-flexible stretchable dimming film comprises an upper transparent electrode layer, a dimming function layer and a lower transparent electrode layer which are sequentially stacked from top to bottom; the preparation method comprises the following steps: 1) preparing a main matrix material / ultraviolet curing resin mixture; 2) assembling the dimming film; and 3) ultraviolet light curing. According to the invention, through surface phosphonic acid functionalization treatment, covalent bond anchoring of cerium oxide nanoparticles is realized on a thermoplastic polyurethane fiber network; by constructing a full-thermoplastic polyurethane material system, the breakthrough of interfacial compatibility between a fiber reinforced phase and a polymer matrix is realized, so that the film has high tensile strain capacity and excellent fatigue resistance on the premise of keeping high transparency.

The invention belongs to the technical field of composite materials, and particularly relates to a composite material for a high-performance cone crusher lining plate and a preparation method of the composite material. The composite material is prepared from the following components in parts by weight: 70 to 90 parts of semi-aromatic polyamide, 20 to 30 parts of fiber reinforced filler, 10 to 20 parts of flexibilizer, 10 to 20 parts of brominated polystyrene, 10 to 15 parts of graphene, 1 to 5 parts of diatomite nanoparticles, 2 to 6 parts of metal compound flame-retardant aid, 0.5 to 3 parts of coupling agent, 0.5 to 3 parts of lubricant and 0.5 to 3 parts of antioxidant. The graphene and diatomite nanoparticles are added into the brominated polystyrene flame-retardant resin, so that the dispersity of brominated polystyrene and the compatibility of the brominated polystyrene and polyamide resin can be improved, the flame retardance and thermal stability of the composite material are improved, and the mechanical property of the composite material can be improved; and the use requirements of devices in equipment such as a cone crusher lining plate are met.

The invention discloses steel fiber reinforced metakaolin-based recycled concrete and a preparation method thereof, and belongs to the technical field of civil engineering materials. The concrete is prepared from the following components in percentage by mass: 60wt%-80wt% of recycled aggregate, 20wt%-40wt% of a cementing material, 0.5 wt%-1.4 wt% of steel fibers and 0.1 wt%-0.7 wt% of an additive, wherein the cementing material comprises cement and metakaolin, and the mass ratio of the metakaolin to the cement is (1-3): (7-9). A nano silicon dioxide coating is arranged on the surface of the steel fiber. The preparation method adopts a step-by-step stirring process. The problem that dynamic impact resistance and green low carbon are difficult to cooperate in the prior art is solved, through component optimization and process control, the dynamic compressive strength of the concrete is improved, the energy absorption capacity is improved, the damage mode is converted into ductility from brittleness, fiber distribution is uniform, and the concrete is suitable for impact-resistant projects such as airport runways and protective structures.

Provided is a vehicle structure disposed at a lower portion of a center of a vehicle body, the vehicle structure including: a battery cover, a battery tray, and a structural member A for absorbing impact energy. Each of the battery cover and the battery tray is configured with an integrally molded fiber-reinforced plastic. The structural member A is located outside in a vehicle width direction of at least the battery cover and the battery tray. The structural member A is fastened together with the battery cover and the battery tray.

The invention provides an intelligent evaluation method for mechanical properties of a carbon fiber composite material, and relates to the technical field of material performance analysis, and the method comprises the following steps: evaluating the performance dispersion of a current batch of samples according to a fiber agglomeration area proportion and a carbon fiber monofilament diameter, and comparing the performance dispersion with a preset dispersion threshold, identifying a non-manufacturability discrete risk level; determining the tensile strength value of each sample through a tensile test, performing statistics to obtain a strength mean value and a strength standard deviation, performing matching analysis on the performance dispersion, the strength mean value and the strength standard deviation, and extracting the fiber reinforcement efficiency; performing weighted fusion processing on the fiber reinforcement efficiency and the fiber agglomeration area proportion to obtain a current batch fiber form comprehensive index, comparing the current batch fiber form comprehensive index with a historical batch, and identifying a fiber form change amplitude; and evaluating the quality consistency degree among the batches according to the strength deviation value and the dispersion difference among the batches, and identifying the non-manufacturability discrete source.

The invention belongs to the technical field of thermal power heating surface treatment, and provides a gradient functional composite coating applied to a boiler heating surface and a preparation method of the gradient functional composite coating in order to solve the technical problems that an existing protective coating of the boiler heating surface is prone to abrasion and oxidation and high in cost. Collaborative design is formed, and gradient matching of mechanical properties and environmental failure resistance is achieved. The low-melting-point glass powder is combined with the rare earth catalytic effect, low-temperature ceramization is achieved, and thermal damage to a matrix is avoided. After the metal ceramic transition layer is sprayed, high-frequency induction remelting treatment is carried out, meanwhile, laser cladding is carried out on the surface of the ceramic surface layer, a nanocrystalline-amorphous composite structure is formed, and the bonding strength of the coating is improved.

The invention relates to a quartz fiber reinforced PEEK resin-based wave-transparent composite material and a forming method thereof, and the forming method comprises the following steps: uniformly coating a layer of PEEK resin powder on quartz fiber cloth, repeatedly laying the quartz fiber cloth and the PEEK resin powder in a laminated manner, arranging quartz fibers on the uppermost layer to finish laying, and compacting to obtain a preformed blank; carrying out compression molding on the preformed blank: heating to 280-320 DEG C from room temperature, carrying out first-stage heat preservation, pressurizing after the first-stage heat preservation is finished, and carrying out first pressure maintaining treatment; the temperature is increased to 390-410 DEG C, second-stage heat preservation is carried out, pressurization is carried out after second-stage heat preservation is finished, and second pressure maintaining treatment is carried out; and heating to 420-435 DEG C, carrying out third-stage heat preservation, and after the third-stage heat preservation is finished, pressurizing and exhausting to obtain the composite material. According to the invention, one-time layering is combined with multi-section heating and other operations to realize blank compression molding, and the obtained composite material is good in interlayer combination and has good mechanical properties and wave-transparent properties.

The invention discloses a basalt fiber reinforced ceramic tile binder and a preparation method thereof, and belongs to the technical field of ceramic tile binders. The basalt fiber reinforced ceramic tile binder is prepared from the following raw materials in parts by weight: 30 to 35 parts of cement, 40 to 50 parts of quartz sand, 1 to 2 parts of basalt fiber, 5 to 8 parts of calcium formate, 1 to 3 parts of redispersible latex powder, 1 to 1.5 parts of organic silicon modified polyurethane and 0.2 to 0.5 part of cellulose ether. The basalt fiber reinforced ceramic tile binder prepared by the invention has the advantages of relatively low slippage distance, good tensile bonding strength, water resistance, high temperature resistance and freeze thawing resistance stability.

The invention relates to the technical field of bamboo winding composite material pipelines, and discloses a bionic bamboo joint connector of a bamboo winding pressure pipeline and a processing technology of the bionic bamboo joint connector, the bionic bamboo joint connector is arranged at the connecting part of two sections of axially aligned bamboo winding pipelines, and the bionic bamboo joint connector sequentially comprises an inner lining layer and an outer lining layer from inside to outside, the embedded steel bar reinforcing layer consists of a reinforcing material and embedded steel bar glue; the film covering restraint layer is composed of fiber reinforced cloth and impregnating resin; the socket fastening layer is composed of a metal fastening piece which is connected with the two pipes in a bridging mode. A protective layer is poured, and the whole connector is wrapped with polymer modified cement mortar; the invention further provides a processing technology of the bionic bamboo joint connector. The processing technology comprises the following six steps of pretreatment, lining welding, embedded steel bar reinforcement, film covering constraint, socket fastening and pouring protection. Through the composite structure of crossed truss type embedded steel bars, polymer modified mortar pouring and socket fastening, the connector obtains high connection strength, excellent anti-drawing performance and long-term durability.

The invention discloses a fiber-reinforced thermoplastic resin-based composite material based on dynamic reversible interface interaction and a preparation method and a recycling method thereof. The fiber-reinforced thermoplastic resin-based composite material comprises a modified thermoplastic resin matrix and a modified fiber reinforcement which are compounded with each other, the modified thermoplastic resin matrix and the modified fiber reinforcement are bonded and connected through dynamic bonds with dynamic reversible interface interaction. Through construction of dynamic reversible interface interaction in the fiber-reinforced thermoplastic resin-based composite material, infiltration compounding and interface bonding between a fiber reinforcement and a high-viscosity thermoplastic resin melt can be enhanced, and interface debonding and total-value recycling of the fiber reinforcement in the composite material recycling process can be effectively promoted; therefore, the bottleneck problems of poor wettability in the forming process, low bonding fastness at a heterogeneous interface, insufficient mechanical properties, low waste recovery value and the like confronted by the development of the fiber-reinforced thermoplastic composite material are effectively solved.

The utility model belongs to the technical field of pipeline materials, and particularly relates to a composite pipeline material. The utility model provides a composite pipeline material. The composite pipeline material comprises an inner surface layer, an inner fiber cloth reinforcing layer, an inner fiber winding layer, a fiber reinforcing structure layer, an outer fiber cloth reinforcing layer, an outer fiber winding layer and an outer protection layer which are sequentially stacked from inside to outside. The inner surface layer is made of epoxy resin; fibers in the inner fiber cloth reinforcing layer, the inner fiber winding layer, the fiber reinforcing structure layer, the outer fiber cloth reinforcing layer and the outer fiber winding layer are basalt fibers; and the outer protection layer is made of epoxy resin. According to the utility model, the epoxy resin and the basalt fiber have good electrical insulation performance and shielding performance, so that the pipeline material has a good stray current resisting effect.

The disclosed fan blade is composed at least in part of a structure (50) made of composite material comprising a fiber reinforcement and a matrix. The fiber reinforcement includes a plurality of plies that are each formed of warp yarns and weft yarns. The warp yarns and weft yarns include incomplete yarns that each have a terminal end on the pressure side (40) or the suction side. The pressure side (40) and the suction side each have at least one ply drop line (80, 81) connecting the terminal ends of the incomplete yarns of the same ply. At least one ply drop line (81) has an end portion (96) that extends from the blade tip up to 90% of the blade height. Said end portion (96) extends generally along a direction of extent (E) forming an angle between 5° and 85° with the local tangent of the warp yarns.

The invention relates to a pressure tank for installation in a gas-driven vehicle for storing gas and to a method for producing a pressure tank or a preform of a pressure tank, the pressure tank having a rotationally symmetrical, longitudinally extending shape which is cylindrical in the middle region and which is closed at both ends with curved pole caps, the pressure tank has a tank wall, which encloses a cavity for storing gas, and a metal coupling, so-called boss, on each pole cap, the tank wall comprising a reinforcement layer made of a fiber-reinforced plastic and an inner sealing gasket, and wherein the pressure tank has a hollow space for storing gas, and a metal coupling, so-called boss, on each pole cap, and wherein the pressure tank has a hollow space for storing gas, and wherein the pressure tank has a hollow space for storing gas, and a metal coupling, so-called boss, on each pole cap. According to the invention, there is a bushing which is connected to the boss part, the pressure ring and the spring element for sealing in such a way that the spring element is supported on the bushing and the pressure ring is pressed onto the gasket and thus the gasket is pressed in the region on the boss part.

The embodiment of the invention provides a plastic-coated steel pipe and a plastic coating process thereof, and relates to the technical field of plastic-coated steel pipes. The plastic-coated steel pipe comprises a steel pipe base body, a metal transition layer, an inner anticorrosive coating, a fiber reinforced winding layer and an outer protective coating are sequentially arranged on the outer surface of the steel pipe base body from inside to outside, and the metal transition layer is a nickel-chromium-aluminum-yttrium alloy layer and is formed on the surface of the steel pipe base body through a supersonic plasma spraying process. And the inner anticorrosive coating is formed by a mixture of bisphenol F type epoxy resin and novolac epoxy resin, and is doped with silicon nitride and zirconium oxide composite nanoparticles subjected to surface treatment. By arranging a multi-stage composite structure of the metal transition layer, the high-temperature-resistant anti-corrosion coating, the fiber reinforcement layer and the self-repairing outer layer and arranging the detachable heat insulation sheath, the interface bonding strength, heat resistance, mechanical damage resistance and corrosion resistance of the plastic-coated steel pipe are improved; and the service life of the composite material in high-temperature, strong-corrosion and complex construction environments is effectively prolonged.

The invention discloses basalt fiber reinforced low-carbon environment-friendly asphalt and a construction method of the basalt fiber reinforced low-carbon environment-friendly asphalt on a high and cold road surface, and relates to the technical field of road engineering. The basalt fiber is subjected to ultrasonic treatment by a silane coupling agent KH-550 hydrolysate and dried, and the low-carbon additive is prepared from waste rubber powder and biological asphalt and is matched with an anti-stripping agent; adding biological asphalt, stirring at a high speed, adding basalt fibers in three times, stirring at a high speed, and finally adding an anti-stripping agent to prepare an asphalt composition; adding an asphalt composition for wet mixing, and then adding fibers for continuous mixing to obtain a mixture; after the lower bearing layer is preheated, a crawler-type paver paves at the temperature of 155-165 DEG C, and the speed and the loose paving coefficient are controlled; initial pressing, re-pressing and final pressing are carried out, and a double-steel-wheel and rubber-wheel road roller is used for rolling according to the temperature and the speed; and after compaction, the heat-insulating tarpaulin is covered. The low-temperature crack resistance and freeze-thaw resistance of the basalt fiber reinforced asphalt, the carbon emission reduction of the waste rubber powder and the biological asphalt and the construction quality guarantee through dynamic temperature control and intelligent compaction are realized, and the construction method is adaptive to the alpine regions and meets the requirements of green road construction.

The invention discloses a method and a system for predicting the optimal ratio of fiber-reinforced environment-friendly cement mortar based on machine learning. The method comprises the following steps: collecting experimental data, and carrying out data preprocessing; screening features of extremely strong correlation and strong correlation by using a Pearson correlation coefficient; constructing a bidirectional gating circulation unit network prediction model based on an attention mechanism, extracting features through a bidirectional GRU layer, and weighting key information through an attention layer; training the model by adopting an adaptive moment estimation optimization algorithm, and performing hyper-parameter tuning in combination with a Bayesian optimization algorithm; and after the target performance index is input, the model outputs an optimal ratio combination meeting the requirement. The system comprises a data acquisition and preprocessing module, a feature screening module, a model construction and training module, a hyper-parameter tuning module and an optimal ratio prediction module. According to the method, the attention mechanism and the bidirectional GRU are fused, so that the prediction precision is improved, and an efficient and reliable solution is provided for proportioning optimization of the environment-friendly cement mortar.

The invention relates to a low-expansion, ablation-resistant and heat-insulating integrated composite material and a preparation method thereof, and belongs to the field of ceramic-based composite materials. Comprising the following steps: putting a fiber reinforcement into a high-temperature furnace, and carrying out glue removal treatment in a vacuum state to remove a surface glue layer; adding low-expansion ceramic powder and ultrahigh-temperature ceramic powder into the ceramic precursor, and carrying out ball milling and uniform mixing to obtain a mixed solution; introducing the mixed solution into the central area of the fiber preform by adopting an injection mode, soaking the fiber preform in the mixed solution, soaking the mixed solution into the fiber preform by adopting a vacuum impregnation and pressure impregnation mode, and fully impregnating, compounding and curing; and putting the cured green body into a high-temperature atmosphere furnace for cracking, and obtaining composite materials with different densities by controlling the number of times of impregnation and cracking. The prepared composite material has excellent heat insulation, ablation resistance and bearing performance, has more reliable thermal stability and reliability, is simple in process and short in period, and can be applied to the fields of ultra-high-speed aircrafts and the like.

The present document relates to a dispensing head for continuous fiber reinforced fused filament type additive manufacturing. The dispensing head is configured for dispensing a material onto a substrate carrier platform, and comprises one or more inlets for receiving a strand of meltable solid material and a reinforcement fiber and a material passage extending from the receiving inlets to a dispensing outlet. The dispensing head further comprises a material heating unit for liquefying the material and drive means for driving the material through the material passage. The material heating unit comprises a solid radiation body extending from the dispensing outlet at least in a direction parallel to the substrate carrier platform, defining a radiation face toward the substrate carrier platform, wherein the radiation body is thermally separated from the dispensing outlet.

The invention provides a graphene oxide and aramid nanofiber hybrid modified chopped fiber reinforced flexible polymer thermal protection material as well as a preparation method and application thereof, and belongs to the field of advanced materials. Aiming at the problems of huge modulus difference, poor interface compatibility and serious stress concentration between fibers and a flexible matrix, a hybrid interface phase composed of graphene oxide and aramid nanofibers is constructed, so that an inert surface microstructure of the chopped fibers is improved, and a multi-scale mechanical interlocking structure is promoted to be formed between the fibers and the flexible matrix; the modulus mismatch between the fiber and a rubber matrix is effectively relieved, and more uniform and efficient stress transfer of an interface area is realized. In the processes of tensile deformation, dynamic loading, high-temperature ablation and the like, the hybrid interface phase can keep tight interface combination between the fibers and the flexible matrix, the ablation anti-scouring performance and mechanical performance of the flexible composite material are remarkably improved, especially the flexible ablation performance in the high-dynamic and deformation state, and the flexible composite material has good application prospects.

A fiber-reinforced polyamide resin composition molded article is characterized by 5 to 50 parts by weight of reinforcing fibers, 40 to 94.9 parts by weight of a polyamide resin composition, and 0.1 to 10 parts by weight of an ammonium salt composed of ammonia and an aliphatic dicarboxylic acid having 6 to 12 carbon atoms, and which is also characterized in that: a weight average fiber length of the reinforcing fibers is 0.4 to 7 mm; the polyamide resin composition comprises a polyamide resin, a second resin having a reactive functional group, and a compound produced by a reaction of the resin and the second resin; and the second resin is dispersed in a form of particles with a number average particle diameter of 10 to 1,000 nm.

The invention relates to a bicycle frame (10, 30) for a sprung bicycle, which is at least predominantly injection-molded in one piece from a fiber-reinforced thermoplastic material, comprising several frame tubes selected from a group of frame parts, including a top tube (16), a down tube (14), a seat tube (12), chainstays (18) and seat stays (19), wherein the bicycle frame has at least one main frame (11) comprising at least the seat tube (12) and the down tube (14) and a bottom bracket housing or motor bearing housing (13) connecting these in one piece and a rear triangle (17) molded in one piece, wherein the rear triangle (17) of the bicycle frame (10, 30) is formed with seat stays (19) and chainstays (18), the rear triangle (17) is designed to be resiliently compliant about a virtual bottom bracket axis (Z), wherein at least the rear triangle (17) includes at least one further frame part designed as a spring element (21, 31). includeswhich defines at least substantially linear spring travel, and wherein at least the further spring element (21, 31) is designed as an integral part of the bicycle frame (10, 30). The invention further relates to a method for manufacturing the bicycle frame.

The invention discloses a fiber composite material based on hydrogen bond self-repairing and conductive self-diagnosis and a preparation method of the fiber composite material, and belongs to the technical field of intelligent diagnosis and self-repairing fiber reinforced resin-based composite materials and preparation of the intelligent diagnosis and self-repairing fiber reinforced resin-based composite materials. According to the method, the problem that the self-healing effect cannot be timely obtained on the internal damage of the material due to the fact that the damage area cannot be accurately positioned and identified before the damage of the existing fiber composite material is repaired is solved. According to the invention, a quantum tunnel effect and a three-dimensional conductive skeleton are constructed by using a micro-nano multi-stage conductive filler composed of a nano carbon nanotube, micron flake graphite powder and unidirectional short carbon fiber, a damage occurrence position is realized based on an electro-mechanical corresponding relation, a self-sensing function is given, and accurate positioning of the damage is realized (the error is less than 1mm). A multiple reversible hydrogen bond system formed by acrylamide, polyethyleneimine and epoxy resin is further utilized, the self-repairing effect of the composite fiber material is achieved, and the test result shows that the self-repairing efficiency of at least 90% or above is achieved at the normal temperature.

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.

The invention discloses a carbon fiber reinforced wear-resistant polyether-ether-ketone composite material and a preparation method thereof, and belongs to the technical field of polymer composite materials. According to the invention, the modified carbon fiber is obtained by one-step synergistic treatment of carbon fiber through oxidizing agent oxidation-silane grafting-nano oxide loading. In the carbon fiber reinforced wear-resistant PEEK composite material, specific modified carbon fibers are used as reinforcing fibers, so that the high-temperature performance of a PEEK matrix can be enhanced, the high-temperature wear resistance can be improved, and meanwhile, high mechanical properties are kept. The material performance synergism is excellent, and through the synergistic effect of the modified carbon fiber (enhanced interface), the nano oxide (enhanced matrix) and the inorganic lubricating material (lubrication barrier), the problem that high-temperature wear resistance and mechanical performance are difficult to consider at the same time in the prior art can be solved. In addition, the invention also has obvious cost and environmental protection advantages.