930 results about "Fibrous composites" patented technology

The invention discloses a carbon fiber composite material surface modification spraying system and a control method thereof. The system comprises a multi-axis robot, a plasma spray gun, a contact angle measuring probe, a 3D line laser scanner, a hyperspectral imager, an environment sensor and a controller. According to the method, the plasma power and the robot speed are adjusted in real time through contact angle measurement and plasma treatment feedback control, so that the CFRP surface can accurately reach a target value, and the coating adhesive force is improved; 3D line laser scanning and hyperspectral imaging are combined, and the posture, the distance, the wet film thickness and the component uniformity of the spray gun are monitored in real time; based on a prediction model fusing a physical model and a neural network, a self-adaptive fuzzy PID control algorithm is adopted, and the coating flow and the track posture of a spray gun are accurately regulated and controlled in real time. The problems of weak coating binding force, uneven thickness, orange peel, sagging and serious coating waste in traditional spraying are effectively solved, and self-adaptive, high-quality and green spraying of workpieces with complex curved surfaces is achieved.

The invention relates to the technical field of plastic material preparation, and discloses a modified bamboo fiber, a PBAT composite material and a plastic object. The modified bamboo fiber comprises bamboo fiber subjected to hot pressing treatment in water and a closed aziridine cross-linking agent loaded on the bamboo fiber, and the mass ratio of the bamboo fiber subjected to hot pressing treatment in water to the closed aziridine cross-linking agent is 100: (1-10). The PBAT composite material comprises the following components in parts by weight: PBAT and modified bamboo fibers, and the mass ratio of the PBAT to the modified bamboo fibers is 100: (20-40). The modified bamboo fiber is subjected to hot pressing treatment in water, so that the generation of volatile gas caused by high-temperature processing can be avoided when the modified bamboo fiber is applied to the plastic material, and the interface interaction with the plastic material can be improved; the closed aziridine cross-linking agent can release active groups at high temperature, and can react with active functional groups such as hydroxyl and carboxyl on the surfaces of the bamboo fibers and the surfaces of the plastic materials, so that the interface interaction between the bamboo fibers and the plastic matrix is improved, and the tensile strength of the composite material is improved.

The invention discloses a warping prediction optimization method for a complex carbon fiber composite suspension structure, and the method comprises the steps: S1, reading CAD and laying layers, and tracking a main heat flow along fibers to segment an anisotropic block; s2, rearranging nodes, locally fitting a principal curvature and a control area, extracting characteristics of a fiber angle, a layer thickness, a temperature and warping, and constructing a weighted adjacency graph; s3, retrieving a historical high-fidelity sample, mapping and enhancing the historical high-fidelity sample into a source domain graph, and performing confrontation training by combining an encoder and a domain discriminator to realize node-level alignment; s4, constructing a generator and a discriminator based on the alignment graph, and carrying out alternate confrontation optimization after preheating; s5, constructing reconstruction, confrontation, peak stress and energy constraint multi-target loss; and S6, the freezing generator reasones initial version warping, and evaluates a node risk clustering high-risk sub-domain. According to the method, on the premise that node-level physical conservation is guaranteed, the warping morphology of the carbon fiber composite component with any shape and fiber laying layer combination under the curing working condition can be rapidly and accurately predicted.

The application provides a composite structure, a shell and an electronic device, the composite structure can be applied to the shell or the electronic device, the composite structure comprises at least one first fiber prepreg, the first fiber prepreg comprises a fiber sheet and a resin wrapping the fiber sheet; the fiber sheet comprises a fiber cloth and a plurality of plating layers on the surface of the fiber cloth, the difference between the refractive indexes of two adjacent plating layers in the plurality of plating layers is greater than or equal to 0.4. In the composite structure provided by the application, the difference in brightness is formed by the difference in refractive indexes between adjacent plating layers, and the appearance of the fiber composite when applied to the shell and the electronic device is improved.

The invention relates to the technical field of carbon fiber design, and discloses a carbon fiber composite material lightweight design method and system.The method comprises the steps that a lightweight design scheme of a carbon fiber composite material is generated based on the real-time environment of the carbon fiber composite material in combination with a carbon fiber distribution cloud atlas, determining a layering design domain of the carbon fiber composite material according to the lightweight design scheme, obtaining a main bearing direction of the layering design domain, matching a rigidity response corresponding to an angle in the layering design domain, obtaining a corresponding rigidity value of the layering design domain, and obtaining a corresponding rigidity value of the layering design domain; the deviation of the corresponding rigidity value is corrected on the basis of the main bearing direction, and the corrected corresponding rigidity value serves as the mapping relation between the laying layer angle and the structural rigidity in the carbon fiber composite material. The prior art generally has the problem of poor adaptability between a layering scheme and an actual working condition.

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 embodiment of the utility model discloses a battery box upper cover, a battery box and a battery assembly. The battery box upper cover comprises an outer fiber composite material skin, a metal material layer, a heat insulation layer and an inner fiber composite material skin, and the metal material layer and the heat insulation layer are arranged between the outer fiber composite material skin and the inner fiber composite material skin. And the metal material layer is used for preventing thermal erosion and impact of battery thermal runaway on the outer fiber composite material skin and preventing fire extension of battery thermal runaway. The upper cover of the battery box disclosed by the embodiment of the utility model is good in thermal runaway prevention and thermal diffusion performance, simple to manufacture and good in applicability.

The invention discloses a high-thermal-conductivity graphene fiber composite material based on conjugate interface adaptation and a preparation method thereof, and relates to the technical field of fiber composite materials. According to the method, a conjugated interface conformation adaptive design of an interface phase is realized by utilizing a functionalized phenylsilane coupling agent through active sites of topological wrinkles on the surface of a graphene fiber, and a molecular conjugated interface layer with an efficient heat conduction path and a strong mechanical interlocking effect is formed. According to the graphene fiber / epoxy resin composite material treated by the method, the interfacial shear strength can reach 90 MPa, the in-plane heat conductivity coefficient reaches up to 550 W / mK, and the performance retention rate exceeds 98% after 100 times of thermal shock cycles. By regulating and controlling the adaptability of the fiber surface wrinkle structure and the interface molecule conformation, the problem that a traditional carbon fiber modification method is insufficient in applicability on graphene fibers is solved, the thermal and mechanical property synergistic effect of the graphene fiber composite material is remarkably improved, and the graphene fiber composite material is suitable for a stable advanced thermal management system in an extreme thermal environment.

The invention provides a middle-sized unmanned aerial vehicle structure and function integrated grating oil tank capable of being automatically and integrally formed and a forming method, and relates to the field of unmanned aerial vehicle structure design. The oil tank body is formed by integral compression molding of an upper skin and a lower skin, the grating separation layer is co-cured with the skins through insert injection molding by chopped carbon fiber reinforced thermoplastic resin to form honeycomb grids, and the oil inlet and outlet connector is an aluminum alloy flange and is fixed to the bottom of the oil tank through welding of aluminum alloy and thermoplastic composite materials. Based on the long and short fiber mixed integrated oil tank design and process technology, full-automatic integrated forming of the main bearing shell can be achieved, the oil tank skin guarantees the bearing capacity through the long continuous fiber composite material, the oil tank grating is made of the chopped fiber composite material, and the functions of sequential oil supply, overload resistance, shaking prevention and the like are achieved; and the number of oil tank parts is greatly reduced, and the potential of full-automatic manufacturing is achieved.

The invention discloses a high polymer / nanofiber composite material with high mechanical property and high weather resistance as well as a preparation method and application thereof, and belongs to the technical field of polymer / nanofiber composite materials. According to the invention, polyether polyol participates in a prepolymerization reaction and is used for preparing a high-molecular polymer from modified nanofibers, and in the reaction process of a curing agent and isocyanate, the modified nanofibers and organic silicon are used as reinforcing phases to be added into the high-molecular polymer; the mechanical property, the weather resistance, the hydrophobic ice resistance, the chemical corrosion resistance and the wear resistance of the high-molecular polymer material are improved. The high polymer / nanofiber composite material with high mechanical property and high weather resistance provided by the invention is suitable for rain erosion protection of wind power blades. The preparation process is simple and efficient, the tensile strength, the elongation at break and the impact strength of the prepared high polymer / nanofiber composite material are remarkably enhanced, and the high polymer / nanofiber composite material is environment-friendly.

The invention discloses a FeNi-C-CNTs-carbon fiber composite material and a preparation method and application thereof, and the preparation method comprises the following steps: (1) cutting carbon fibers into short fibers, dispersing the short fibers into fiber bundles, fixing the fiber bundles, and carrying out electrostatic dispersion; (2) spraying an adhesive on the surface of the dispersed carbon fiber to form an adhesive layer on the surface of the carbon fiber, and then pre-curing the adhesive; and (3) carrying out chemical vapor deposition by adopting a horizontal tube furnace and taking a mixture of ferric acetylacetonate and nickel acetylacetonate as a metal precursor. In the FeNi-C-CNTs-carbon fiber composite material, the FeNi alloy nanoparticles and the carbon nanotubes cooperatively construct a three-dimensional conductive network, wave absorbing mechanisms such as magnetic loss, dielectric loss and multiple scattering are strengthened by means of the unique structure, the wave absorbing performance is remarkably improved, the effective frequency band is widened, and the composite material has excellent microwave absorbing performance and structural stability.

The invention discloses a carbon fiber composite material cable core long-term performance detection device, and relates to the field of cable performance tests.The carbon fiber composite material cable core long-term performance detection device comprises a test box, a test cavity is formed in the test box, a bearing unit is arranged on the inner wall of the test cavity, a test piece is borne on the bearing unit, and an electric heating piece and a temperature and humidity sensor are arranged on the inner wall of the test cavity; and a controller is arranged on the test box. According to the long-term performance detection device for the carbon fiber composite material cable core, through cooperative use of the sand wind simulation unit and the moisture simulation unit, single environment simulation and complex environment simulation can be performed according to needs in the aging test process of the carbon fiber composite material cable; therefore, the aging test simulation data of the carbon fiber composite cable is more comprehensive.

This invention belongs to the field of curing and molding of short fiber composite materials, and discloses an apparatus and method for three-dimensional oriented curing and molding of short fibers. The orientation device of this invention includes a storage tank for holding the short fiber curing solution, a base for fixing the entire device, a horizontal rotation system for controlling the horizontal angle of the fibers, a vertical rotation system for controlling the vertical rotation angle of the fibers, and an electromagnetic system and a control system for providing an electromagnetic field. Under the command of the control system, the electromagnetic system generates an electromagnetic field, which is then used for magnetic field positioning under the drive of the horizontal and vertical rotation systems. The electromagnetic field then orients the magnetized short fibers. This apparatus and method can achieve three-dimensional orientation of short fibers in a matrix material, effectively improving the mechanical properties of short fiber reinforced composite materials and further enhancing the designability of short fiber composite materials.

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.

A thermal folding forming method for additive manufacturing of a three-dimensional lattice structure of a fiber-reinforced composite, the method comprising the following specific steps: a first step, printing a fiber-reinforced composite having a repeated two-dimensional planar lattice structure by means of a dual-nozzle continuous fiber-reinforced composite additive manufacturing apparatus; a second step, using a robotic arm gripper (4) to grip the printed fiber-reinforced composite having a two-dimensional planar lattice structure and place same onto a retractable hot roller thermal folding and heating device, and heating same at a fiber connection point, wherein the thermal folding device is arranged in a 10 x 10 columnar lattice and can be fully retracted with a retractable height ranging from 0-50 mm, such that the fiber-reinforced composite having a two-dimensional planar lattice structure is heated and elevated by means of the retractable hot roller, and can be folded into the fiber-reinforced composite having a three-dimensional lattice structure; and a third step, using the robotic arm gripper (4) to grip the fiber-reinforced composite having a three-dimensional lattice structure and place same into a water-cooling box for water cooling and shape setting. The forming method can improve the structural complexity of the fiber-reinforced composite, thereby achieving the three-dimensional structure transformation of the composite.

The invention discloses a large-size carbon fiber composite material wallboard precise hole making process method, and relates to the field of aviation composite material wallboard hole making, and the method comprises the steps that a chip containing space extending in the axial direction is machined in a preset hole position of a composite material wallboard forming mold, and the chip containing space is of a blind hole structure; the chip containing space is filled with a sacrificial layer material matched with thermal expansion, and the difference value between the thermal expansion coefficient of the sacrificial layer material and the forming mold and the composite material is smaller than a preset threshold value; the composite material wallboard is kept in a non-demolding state after being cured, and the wallboard and the forming mold are integrally positioned to machining equipment; establishing a processing coordinate system based on the reference features of the forming die; and a multi-cutting-edge tool is adopted for drilling the wall plate with the mold, so that the tool penetrates through the composite laminated plate and cuts the sacrificial layer material, and the tail end of the tool does not make contact with a forming mold body. According to the scheme, the precision of the connecting hole site of the composite material wallboard can be ensured, and the demolding deformation error, the outlet layering damage and the secondary clamping cost are synchronously eliminated.

The invention discloses a performance equivalence method for a special-shaped fiber composite material, which comprises the following steps of: establishing a high-precision micro-mechanical model of the special-shaped fiber composite material, and obtaining an exact solution of the vibration frequency of a special-shaped composite material plate; establishing a special-shaped fiber composite material homogenization mechanical model, taking a composite material elastic constant of a normal plate as an initial value, and optimizing a correction coefficient of the elastic constant to obtain an equivalent solution of the plate vibration frequency of the homogenization mechanical model; the equivalent elastic constant of the special-shaped fiber composite material is obtained by reducing the error between the accurate solution and the equivalent solution of the vibration frequency of the special-shaped plate. According to the scheme, the accurate solution of the plate vibration frequency is provided by establishing the high-precision micromechanical model of the special-shaped fiber composite material, the equivalent elastic constant of the homogenization model is obtained by reducing the vibration frequency error between the homogenization model and the micromechanical model, and the performance equivalence of the special-shaped fiber composite material is realized.

The invention relates to the technical field of fiber composite materials, and discloses a preparation method of a carbon-based carbon fiber composite material, which comprises the steps of carbon fiber pretreatment, double-layer film preparation, sheet filler directional arrangement, carbon-based paste material preparation, mold forming, pressing and heat treatment, and dipping and filling. According to the invention, through a bionic hierarchical arrangement structure and a hydrodynamic force assisted orientation technology, highly oriented arrangement of the flaky filler in a coating is realized, a'brick-mud 'structure similar to a shell pearl layer is formed, and meanwhile, a surface gradient functionalization and sacrificial bond forming method is adopted, so that the surface gradient functionalization is realized. The problems of insufficient interface bonding strength and poor anti-fluorination performance of the coated carbon fiber and the carbon matrix are solved, and the service life and the comprehensive performance of the anode plate are remarkably improved.

The invention provides a precision casting and friction welding digital manufacturing method for a basic part of an aero-engine, which specifically comprises the following steps of: 1, preparing a blade by adopting a high-temperature alloy material through a precision single crystal casting process; 2, a titanium alloy / high-temperature alloy / carbon fiber composite material is adopted for preparing a blisk / turbine disk; 3, the blades and the blisk / turbine disc are connected through a linear friction welding technology, and connection of homogeneous or heterogeneous metal or nonmetal is achieved; 4, in the linear friction welding process, data of vibration and force-heat multi-frequency key factors are collected, and support is provided for construction of a digital twinborn model; and 5, a digital twinborn model of the linear friction welding process is constructed based on the collected data. According to the method, key factors such as vibration and force heat in the linear friction welding process are collected and reconstructed, the digital twinborn model is constructed, the welding process can be monitored in real time, the welding quality can be predicted, and a basis is provided for welding process optimization and component performance evaluation.

The invention provides a radio frequency assisted continuous fiber composite 3D printer and a printing method thereof, and relates to the technical field of 3D printing. The radio frequency assisted continuous fiber composite material 3D printer comprises a printing platform, a 3D printer body and a control system, wherein the printing platform is used for placing and fixing a printing material; the printing spray head is used for spraying a printing material to the printing platform; the driving device is used for driving the printing nozzle to move along a preset path; and the first heating assembly is used for continuously heating the printing material which leaves the printing nozzle and does not fall onto the printing platform and the printing piece, so that the temperature difference between the printing material and the printing piece is reduced. According to the radio frequency assisted continuous fiber composite material 3D printer, the bonding force between printing materials / layers is remarkably improved, the buckling deformation degree of a printed piece is reduced, and then the stability, the mechanical performance and the appearance quality of the printed piece are improved.

A racquet including a frame including a head portion, a handle portion, and a throat portion. The head portion forms a hoop that defines a string bed plane. The head portion of the racquet being formed of a fiber composite material. When the racquet is tested under the racquet lateral bending test, the racquet has a lateral deflection of at least 6.5 mm when measured in a first direction that is parallel to the string bed plane and perpendicular to the longitudinal axis. When the racquet is tested under a racquet forward / rearward bending test, the racquet has a forward / rearward deflection with respect to the longitudinal axis of less than 7.3 mm when measured in a direction that is perpendicular to the string bed plane and perpendicular to the longitudinal axis.

The invention discloses a carbon fiber composite material recovery device and a control method thereof. The carbon fiber composite material recovery device comprises a reaction container, a microwave radiation assembly, a monitoring assembly, a shell and a control system, the reaction container is used for containing a carbon fiber composite material and a treating fluid, and the microwave radiation assembly is used for providing microwave radiation energy for the carbon fiber composite material in the reaction container; the monitoring assembly is used for monitoring reaction parameters in the reaction container in real time, a shielding layer is arranged on the inner wall of the shell and used for shielding microwave radiation generated by the microwave radiation assembly, and the control system is used for adjusting the output power of the microwave radiation assembly according to the monitored reaction parameters. According to the invention, the microwave absorption capability of carbon fibers in the carbon fiber composite material is utilized, degradation reaction energy is directly provided for the carbon fiber composite material in a targeted manner in a microwave radiation manner, the degradation liquid in the whole reaction container does not need to be heated, the energy consumption cost is low, and the reaction time is high.

The invention relates to the technical field of curved surface forming of fiber composite materials, in particular to a fiber composite material curved surface multi-point flexible gas-assisted hot pressing pressure control method and system.The method comprises the steps that the fiber direction is obtained by obtaining a design mold, and a deformation mismatching area is determined according to the fiber direction and the obtained airbag deformation direction; according to the method, a deformation mismatch area is obtained, a mismatch dynamic control network is constructed to carry out adaptive adjustment on the deformation mismatch area, local pressure compensation is carried out according to obtained adaptive adjustment feedback, and finally, the mismatch dynamic network is controlled by collecting a mold gap and a gap fitting standard. The problem of deformation mismatch caused by elasticity modulus difference in the primary and secondary directions of the fibers is effectively solved, and the direction and position accuracy of the fibers in the forming process is ensured through dynamic adaptive adjustment of a deformation mismatch area, so that the structural integrity and the mechanical property of a formed object are improved, the pressure can be more accurately controlled, and the production efficiency is improved. The requirements of complex mold curved surfaces and fiber layout are met, and the forming precision is improved.

The invention provides a preparation method of a composite material leaf disc, and belongs to the technical field of composite material leaf discs. The preparation method specifically comprises the steps that a continuous fiber composite material circular-truncated-cone-shaped prefabricated body with one closed end is woven, and the closed end serves as a disc body prefabricated body basic structure; cutting the annular circular-truncated-cone-shaped side wall according to a planned cutting line, and dividing the annular circular-truncated-cone-shaped side wall into a plurality of parts to obtain a blade prefabricated body basic structure; the basic structure of each blade prefabricated body is unfolded, and redundant structures are removed to obtain a composite material blade disc prefabricated body; putting the composite material leaf disc prefabricated body into a designed mold, and carrying out direct curing or matrix filling curing to obtain an initial structure of the composite material leaf disc; and processing the initial structure of the composite material leaf disc to obtain a final structure of the continuous fiber composite material leaf disc. The overall performance and reliability of the blade disc are improved.

The utility model relates to the technical field of material mixing, and discloses a carbon fiber composite material mixing device which comprises a mixing tank, the bottom of the mixing tank is fixedly connected with a discharging pipe, the inner wall of the mixing tank is fixedly connected with a mounting bracket, and the top of the mounting bracket is fixedly connected with a fixing sleeve. The top of the fixing sleeve is fixedly connected with a driving motor, the output end of the driving motor is in transmission connection with a rotating rod, the surface of the rotating rod is rotationally connected with a rotating shaft, and the surface of the rotating rod is fixedly connected with stirring blades. According to the carbon fiber mixing device disclosed by the utility model, a triangular mixing sheet is arranged, a carbon fiber material is put into the mixing tank from the top of the mixing tank, then a driving motor is started, the driving motor drives a rotating rod to rotate, the rotating rod rotates to drive a stirring sheet to rotate, and the stirring sheet rotates to drive the triangular mixing sheet to rotate; the stirring blades stir and mix the carbon fiber materials in the stirring blades during rotation, and the triangular mixing blades continuously stir the carbon fiber materials for secondary mixing during rotation.

The invention discloses an integrally-formed carbon fiber composite material Pick racket and a production process, and relates to the technical field of Pick racket production, the integrally-formed carbon fiber composite material Pick racket comprises a carbon fiber shell, a racket core structure is arranged in the carbon fiber shell, the racket core structure and the carbon fiber shell are integrally formed in a hot press mode, and each of the racket core structure and the carbon fiber shell comprises a racket face part and a racket handle part; the racket core structure comprises an elastic base plate, two honeycomb plates are symmetrically arranged on the elastic base plate and fixed through adhesion, an arc-shaped groove is formed in the top of the elastic base plate and the top of the honeycomb plates, a connecting strip is arranged in the arc-shaped groove, and a damping arc block is arranged at the position, corresponding to the joint of the racket face part and the racket handle part, of the elastic base plate and the honeycomb plates. The multi-layer composite racket core structure of the double honeycomb plates and the elastic base plate is adopted, and the multi-layer composite racket core structure and the carbon fiber shell are integrally formed in a hot press mode, so that collaborative optimization of light weight, high strength and shock absorption and noise reduction performance of the racket is achieved, and production efficiency and product consistency are improved.

The application belongs to the technical field of polymer materials, and particularly relates to a high-performance fiber composite material and a preparation method thereof. The preparation method of the high-performance fiber composite material comprises the following steps: adding pretreated aluminum oxide whiskers into a solvent, then adding pretreated carboxymethyl cellulose and gallic acid, and heating to reflux to obtain modified aluminum oxide whiskers; then mixing epoxy resin, the modified aluminum oxide whiskers, a curing agent and an accelerator uniformly to coat a film to obtain a resin adhesive film; and compounding the resin adhesive film and carbon fibers through hot pressing to obtain carbon fiber prepreg, and heating and curing the obtained prepreg to obtain the high-performance fiber composite material. The fiber composite material obtained by the application not only has high strength and rigidity, but also has excellent toughness, can effectively resist the impact of the external environment, has oxidation resistance and long-term stability, and has a wide application prospect in the fields of aerospace and new energy equipment.

The invention belongs to the technical field of ceramic fiber composite material preparation, and provides a ceramic fiber aerogel felt and a preparation method thereof. A ceramic fiber felt is used as a framework, basic sol is prepared through a sol-gel method, and three additives are introduced: the first additive is a borosilicate oligomer solution used for forming a high-temperature-resistant borosilicate network in a final material; the second one is a Ti-POSS solution which is used as an in-situ precursor of a high-temperature infrared opacifying agent and is used for inhibiting radiation heat transfer of the material at high temperature; the third solution is a phosphazene siloxane solution, so that the material is endowed with intrinsic flame retardance and flexibility; then, functional conversion and ceramization processes are completed through solvent replacement, surface hydrophobic modification, normal-pressure drying and heat treatment, and the obtained ceramic fiber aerogel felt has excellent heat insulation performance and high-temperature structural stability and has important application value in the field of thermal safety protection of high-end power batteries.

The application provides a preparation method of a composite material bladed disc, and belongs to the technical field of the composite material bladed disc, and specifically comprises the following steps: braiding a continuous fiber composite material circular truncated cone shaped preform with one end closed, and the closed end is used as a disc preform basic structure; cutting the annular circular truncated cone shaped side wall according to a planned cutting line, so that the annular circular truncated cone shaped side wall is divided into a plurality of parts, and a blade preform basic structure is obtained; unfolding each blade preform basic structure, and removing redundant structures to obtain a composite material bladed disc preform; placing the composite material bladed disc preform into a designed mold, and directly curing or performing matrix filling curing to obtain a composite material bladed disc initial structure; and processing the composite material bladed disc initial structure to obtain a continuous fiber composite material bladed disc final structure. The application improves the overall performance and reliability of the bladed disc.