53 results about "Environmental aging" patented technology

The invention relates to the technical field of aging detection, and discloses a xenon lamp simulation environment aging detection method and system for a water-based waterproof material. The method comprises the following steps: testing a water-based waterproof material sample in an aging detection platform and collecting first aging response data; calculating a characteristic spectrum drift parameter combination in combination with the first aging response data, and solving a multi-factor aging dynamics equation set to obtain three-dimensional environment field data; inputting the three-dimensional environment field data into a back propagation neural network to carry out multi-factor environment parameter collaborative optimization to obtain an intelligent control parameter combination; performing test parameter adjustment and detection on the aging detection platform according to the intelligent control parameter combination to obtain second aging response data; and performing spectral attenuation index calculation and aging degree grading based on the second aging response data to obtain an aging state evaluation result of the water-based waterproof material sample. According to the method, multi-dimensional quantitative characterization of the aging state of the water-based waterproof material and scientific prediction of the service life of the water-based waterproof material in an acid pollution environment are realized.

The invention relates to the technical field of waterproof coating detection, in particular to a waterproof coating aging life prediction method and system, which not only improve the prediction precision, but also enhance the scientificity and rationality of waterproof coating use. The method comprises the following steps: collecting a use environment parameter set and a use structure vector of a to-be-predicted waterproof coating; the use environment parameter set comprises humidity, temperature, ultraviolet intensity and pH value; the used structure vector comprises a coating area and a coating thickness; taking the use structure vector as a mapping condition, and extracting a corresponding structure aging influence factor from a pre-constructed structure influence factor matrix; obtaining component characteristic information and a standard environment parameter set of the waterproof coating to be predicted; performing deviation analysis on the use environment parameter set and the standard environment parameter set to obtain environment aging influence factors; and performing test analysis on the component characteristic information, and determining the standard service life of the waterproof coating under the standard environment parameter set.

The invention relates to the technical field of electronic device testing, and discloses a high-stress acceleration type electronic device integrated aging test system. A central control unit of the system controls an environment simulation cabin module to start a test according to a test task instruction, and the environment simulation cabin module simulates a preset high-stress environment. The aging state evaluation module determines the real-time aging grade and the risk grade of the electronic device and sends the real-time aging grade and the risk grade to the central control unit, and the central control unit adjusts stress application parameters of the environment simulation cabin module according to the real-time aging grade and the risk grade. When the fault diagnosis module detects performance abnormity, real-time performance parameters and test timestamps are sent to the self-adaptive adjustment module, and the self-adaptive adjustment module judges whether stress parameters need to be adjusted or not and sends a correction instruction to the central control unit. And the aging state evaluation module analyzes the temperature distribution data, and sends a test timestamp and real-time performance parameters to the user interaction interface for real-time display when an overheating or performance attenuation signal is generated.

The invention relates to the technical field of power electronics, in particular to a multi-environment aging detection and evaluation method and system for an electrical device. A multi-environment aging detection and evaluation method for an electrical device comprises the following steps: S1, collecting environmental factor data and personnel activity data of a gallium nitride power device in various application scenes, and generating a test environmental stress sequence according to the environmental factor data and the personnel activity data; s2, testing the gallium nitride power device according to the test environment stress sequence, and monitoring aging parameters of the gallium nitride power device in real time; and S3, generating an aging feature vector based on the aging parameters, and judging an aging mechanism and confidence according to the aging feature vector and an aging mechanism judgment model. The aging mechanism of the device in different application scenes is judged by simulating environmental factors and personnel activity data of different application scenes, and decision support is provided for technicians engaged in device design and maintenance.

The embodiment of the invention provides a coating, a preparation method of the coating and a device. The preparation method of the coating comprises the steps that a base material is placed on a support in a plasma reaction chamber; activating gas is introduced, first plasma discharge is started, and the base material is pretreated; an organic silicon monomer is introduced into the plasma reaction chamber, second plasma discharge is started, bias voltage is loaded on the support, and a coating with the thickness ranging from 400 nm to 2000 nm is deposited on at least part of the surface of the base material. The coating has excellent light transmission performance, anti-vulcanization performance and environmental aging resistance.

The invention discloses a whisker reinforced cement-based anticorrosive coating and a preparation method thereof. The anticorrosive paint is prepared from the following raw materials: sulphoaluminate cement, graded quartz sand, water, silica fume, metakaolin, barium sulfate, a polycarboxylate superplasticizer and modified zinc oxide whiskers. The anticorrosive paint has the advantages of low cost, high curing speed, high temperature stability, high environmental aging resistance and high adaptability to a humid environment, and can obviously improve the apparent flatness of a concrete structure; meanwhile, through the combination of a silica fume-metakaolin-barium sulfate compound system and a zinc oxide whisker three-dimensional enhancement technology, the bonding strength and durability of the coating are greatly improved, the surface of the coating is endowed with the self-antibacterial characteristic, and the coating is low in construction requirement, can be directly constructed on a wet base plane, does not release VOC in the construction process, is healthy and friendly to constructors, and has good application prospects. Therefore, the corrosion inhibitor can be widely applied to corrosion prevention of surfaces of concrete substrates of various sewage treatment structures in sewage treatment plants, and durability of the substrates is improved.

The invention relates to a bonding structure, an edge covering assembly, a preparation method of the edge covering assembly and a vehicle. The bonding structure is used for bonding a first component to be bonded and a second component to be bonded, the bonding structure is arranged between the first component and the second component, and the bonding structure comprises a first bonding part arranged on the side close to the first component and a second bonding part arranged on the side close to the second component; the first bonding part and the second bonding part both comprise magnetic materials, one magnetic material is a permanent magnet material, and the other magnetic material is a permanent magnet material or a magnetic attraction material. The bonding structure is beneficial to improving the anti-stripping strength and anti-vibration performance of a bonding interface, inhibiting bonding force attenuation caused by environmental aging (such as damp heat and ultraviolet rays), compensating internal stress deformation of the adhesive tape through magnetic attraction force, and prolonging the service life of the interface.

The utility model provides a kind of functional film, belong to functional film technical field.The utility model's functional film includes base material layer and the closed cavity inlay in the base material layer.The utility model's functional film only includes a layer of base material layer, more light and thin, optical absorption is lower, heat transfer performance is better;And relative to laminated structure, there is no interface mismatch risk, low in cost, there is no laminated interface, avoid delamination caused by moisture penetration under high temperature and high humidity environment, higher environmental aging resistance, and need not laminating.The utility model's functional film in solar cell field, can improve the structural stability of heat dissipation and packaging, improve the power generation efficiency of solar module, long-term working life and environmental tolerance, in display field, its light and thin, flexible and non-heterogeneous characteristics make it have good application space in precision optical device.

This utility model discloses a composite-coated anti-corrosion steel pipe, belonging to the field of steel pipe anti-corrosion technology. It includes a steel pipe body, with a first composite coating on the inner wall and a second composite coating on the outer wall. The first composite coating comprises, in sequence, an epoxy primer layer, a graphene-modified epoxy resin coating, and a polyurethane coating. The second composite coating comprises, in sequence, an epoxy resin underlayer, a polyolefin adhesive transition layer, and a modified polyurethane toplayer. This utility model, through differentiated coating design on the inner and outer walls, addresses the issues of media corrosion and erosion on the inner wall, while the outer wall addresses soil stress and environmental aging. Combined with a coupling agent layer and anti-corrosion sealing bosses, it eliminates weak points at the coating interface and connection areas, achieving multi-dimensional improvements in corrosion resistance, wear resistance, weather resistance, and mechanical properties, providing an efficient solution for pipeline engineering in harsh service environments.

The application discloses a laser composite self-punch riveting process for aluminum alloy plate connection and belongs to the technical field of metal material connection. The process prepares a precise micro-groove structure in a connection area through femtosecond laser, combines ultrasonic deep cleaning and controllable pressure riveting process, and realizes the synergistic strengthening of interface mechanical interlocking and metallurgical bonding. Specifically, the process includes material surface treatment, laser micro-texturing processing, high-precision positioning, cold forming riveting and interface strengthening stages. The laser cold processing technology is used to avoid thermal damage, significantly improve the interface bonding strength and fatigue resistance, and the application discards the traditional adhesive process, effectively solves the riveting stress concentration and adhesive layer environmental aging problems, is suitable for the high-reliability connection demand of lightweight structures, and especially exhibits excellent environmental tolerance under complex working conditions.

Generally, disclosed herein are various embodiments of bonding agents for use in adhering optical fibers to ferrules within optical connectors, and the methods for use thereof. The various embodiments of bonding agents described herein may provide desirable properties, such as, but not limited to, high adhesion strength and / or improved performance following environmental aging. Various embodiments of the bonding agents disclosed herein may also have other desirable properties for the process of securing an optical fiber within a ferrule, such as, but not limited to, shortened process cycle time.

The invention relates to the technical field of anticorrosive coatings, and discloses an environment-friendly fluorine-free aluminum alloy surface anticorrosive coating and a preparation method thereof. The preparation method comprises the following steps: carrying out intercalation modification treatment on Na-montmorillonite by using mono-quaternized hepta (salicylate) cage type polysilsesquioxane to prepare lamellar spacing stable montmorillonite loaded with a salicylate group and a polysilsesquioxane group; the preparation method comprises the following steps: compounding interlamellar spacing stable montmorillonite and bisphenol A glycidyl ether type epoxy resin based on a pi-pi accumulation effect between phenyl groups, and carrying out emulsification treatment through a phase inversion method to prepare a corrosion-resistant and weather-resistant water-borne epoxy resin emulsion; the environment-friendly fluorine-free aluminum alloy surface anticorrosive paint is prepared by taking a corrosion-resistant and weather-resistant water-borne epoxy resin emulsion as a film-forming raw material, and the paint product not only has excellent corrosion resistance, but also shows high weather resistance, and can play a role in resisting a corrosive medium and environmental aging simultaneously when being applied to the aluminum alloy surface.

The present invention relates to the technical field of bamboo-fiber-wound composite pipes. Disclosed are a bamboo-fiber-wound composite pipe and a manufacturing method therefor. The composite pipe comprises a rigid inner sleeve, a bamboo-fiber winding layer and a rigid outer sleeve in sequence from inside to outside, wherein a plurality of bumps are arranged in an annular array on the outer side wall of the rigid inner sleeve, the lengthwise directions of the bumps are consistent with the axial direction of the rigid inner sleeve, the bumps protrude outwards in the radial direction of the rigid inner sleeve, and the bumps are spaced apart from each other; resin is filled between every two adjacent bumps; the bamboo-fiber winding layer is wound around the bumps; and a plurality of V-shaped grooves are arranged in an annular array on the inner side wall of the rigid outer sleeve, and the lengthwise directions of the V-shaped grooves are consistent with the axial direction of the rigid outer sleeve. The composite pipe combines the natural corrosion resistance of bamboo fibers and the chemical stability of the resin, and has an excellent mechanical strength and environmental aging resistance, thereby being suitable for long-term use in various severe environments.

The application discloses a kind of weathering aging performance detection devices for modified silica gel new material children tableware detection, it is related to new material detection technical field, including aging cabinet, the xenon arc lamp is installed in the aging cabinet, soaking groove is arranged in the aging cabinet.The weathering aging performance detection devices for modified silica gel new material children tableware detection, by driving mechanism drives silica gel chopsticks reciprocating motion, realize the intermittent contact and separation of tableware and olive oil medium, restore the real state of tableware alternate contact grease, exposed in air in daily use;While cooperating with mechanical fatigue loading mechanism, simulate the bending deformation and friction loss in the process of tableware use, realize the coupling detection of environmental aging and mechanical fatigue aging, completely solve the drawbacks of traditional equipment single aging detection, let detection working condition highly fit actual use scene, greatly improve the authenticity and reference value of detection data.

The utility model discloses an anti-vibration hammer, including a hammer body, a fixed seat fixedly connected to the surface of the hammer body, and a mounting box fixedly connected to the top of the mounting seat. The utility model shows a state in which the hammer body and the electric wire are fixedly installed, and due to the shielding of the mounting box, the internal mounting structure thereof is subject to a slow rate of environmental aging, and the hammer body and the electric wire can be stably fixed together for a long time. When the hammer body and the electric wire need to be separated, the screw is rotated, and the screw drives the inclined block 2 to move to the right, and the inclined block 1 and the U-shaped plate move downward after losing the support of the inclined block 2, and the clamping plate rotates to both sides after losing the limit of the U-shaped plate, and the electric wire is separated from the clamping plate, and the hammer body is disassembled. When installing, the above disassembly steps can be reversed to complete the installation, and the utility model has the advantage of high installation stability, and the fixed structure is isolated from the outside world, and the fixed structure will not age rapidly due to environmental factors, thereby improving the installation stability of the anti-vibration hammer.

The invention provides a functional film and a preparation method and application thereof, and belongs to the technical field of functional films. The functional film comprises a base material layer and a closed cavity embedded in the base material layer. The functional film provided by the invention only comprises one base material layer, and is lighter and thinner, lower in optical absorption and better in heat transfer performance; and compared with a laminated structure, the film has the advantages of no interface mismatching risk, low cost, no laminated interface, avoidance of layering caused by moisture permeation in a high-temperature and high-humidity environment, high environmental aging resistance, simple preparation method and no need of lamination. In the field of solar cells, the functional film disclosed by the invention can improve the power generation efficiency, long-term service life and environmental tolerance of a solar module by improving the structural stability of heat dissipation and packaging, and has good application space in precise optical devices due to the characteristics of lightness, thinness, flexibility and non-heterogeneity in the field of displays.

The invention belongs to the technical field of asphalt aging experiments, and particularly relates to an asphalt material multi-factor environmental aging simulation test system which comprises an experiment box, a sealing hinged door is arranged at the end of the experiment box, a temperature control system and a gas control system which are communicated with the interior of the experiment box are arranged on the outer side of the experiment box, and a motor is arranged in the experiment box. The driving end of the motor is connected with a sample placing table, and the using method of the asphalt material multi-factor environmental aging simulation test system comprises the steps of preparing a sample to be tested and the system, presetting parameters, initializing the system, establishing a simulation environment, and carrying out light aging simulation and spraying simulation. According to the invention, the optical chamber forms an independent chamber in the test box through the quartz filter window, the optical chamber is isolated from other areas of the test box, and meanwhile, the heat energy of a traditional abandoned light source can be converted into useful auxiliary energy, so that the operation energy consumption of the system is directly reduced, and accurate temperature control can be carried out under the multi-factor coupling effect in the test process.

The invention discloses a fuel cell system risk quantification method for coupling environment, aging and fault, which establishes a combined action mechanism of three adverse factors of environment, aging and fault on the system, and determines the system risk under the combined influence of the three adverse factors, and comprises the following steps: establishing an influence function fenv of the working environment on the system performance; establishing an influence function fde of galvanic pile aging on system performance; establishing an influence function ffaut of the system fault on the system performance; mutual influence definition among the three factors is carried out, and quantitative analysis is carried out on the risk of the fuel cell system through coupling influence analysis of the three factors on system performance. According to the method, the limitation of existing research can be effectively overcome, and technical support is provided for safety, reliability and life prediction of the fuel cell in a complex operation environment and a key application scene.

The invention provides a dual active protection anticorrosive coating and a preparation method thereof, the anticorrosive coating is prepared by taking polyurethane with disulfide bonds as a matrix and introducing modified polyaniline two-dimensional nanosheets, namely, 2D-NACS capable of realizing self-protection in a seawater environment. When the coating is damaged and seawater touches a substrate, a corrosion reaction is initiated to generate Fe < 2 + > to trigger (1) first active protection: on a metal / coating corrosion area interface, C-PANI in the coating promotes Fe < 2 + > to be quickly converted into Fe < 3 + >, a Fe2O3 passivation layer is formed, and a corrosion medium is prevented from further invading; and (2) secondary active protection: the disulfide bond at the crack realizes crack healing through bond exchange, a seawater diffusion path is closed, and permeation of a corrosive medium is inhibited. The process simulates the migration and repair process of skin cells, finally, cracks are gradually repaired, the anti-corrosion function of the coating is recovered, and the problem that the protection performance is reduced due to the fact that 2D-NACS is prone to being damaged and cracked after being subjected to long-term environmental aging and external mechanical damage is solved.

The invention relates to a high-molecular polymeric material for metal wire plastic coating and a preparation method, and belongs to the technical field of high-molecular materials, and a plastic coating layer is of a double-layer structure and comprises an inner layer and an outer layer. And the inner layer adopts a polyvinyl composite system which does not contain or contains little carbon black, and focuses on the adhesion, impact resistance and low temperature resistance of the metal wire. And the outer layer adopts a polyethylene / polyvinyl chloride composite system containing carbon black and titanium dioxide in a specific proportion, and focuses on wear resistance, ultraviolet resistance and weather resistance. Through one-time coating molding of a double-layer co-extrusion process, cooperation of functions of the inner layer and the outer layer is achieved through the structure, the adhesive force, environmental aging resistance, mechanical strength and long-term service life of the obtained plastic-coated wire rod are comprehensively improved, and the plastic-coated wire rod is suitable for protection application in outdoor harsh environments.

The invention discloses a hollow microbead-doped optical fiber coating process and a coating composition, the coating composition comprises the following raw materials by weight: 40-55 parts of a photocuring oligomer, 20-30 parts of a photocuring active monomer, 1-5 parts of a photoinitiator, 1-3 parts of an auxiliary agent and 10-30 parts of hollow microbeads, and the invention relates to the technical field of optical fiber manufacturing. According to the hollow microbead-doped optical fiber coating process and the coating composition, the problems of low initiation efficiency and more volatile matters of a traditional optical fiber coating composition are effectively solved by doping the hollow microbeads, and the hollow microbeads have high heat resistance (can resist 1300 DEG C), so that the heat distortion temperature of a coating layer can be effectively improved, and the stability of the optical fiber in a high-temperature environment is enhanced; the stability and efficiency of the coating process are improved, meanwhile, the fluidity of the coating composition is remarkably improved through the spherical structure and the smooth surface characteristic of the hollow microbeads, the optical fiber coating process is more uniform and stable, the environmental aging resistance of the optical fiber is remarkably improved through the addition of the hollow microbeads, and the service life of the optical fiber is prolonged.

This invention discloses an anti-aging power metering box cabinet material, relating to the field of organic materials technology. The anti-aging power metering box cabinet material comprises the following raw materials by weight percentage: 25%-35% unsaturated polyester resin, 11%-15% low-shrinkage agent, 0.5%-2% initiator, 2.5-8% additives, 35%-50% organic composite filler, and 15%-25% modified chopped glass fiber. This application adds the prepared modified chopped glass fiber to the unsaturated polyester resin, along with the remaining additives required for preparing the electrical cabinet material, to obtain the cabinet material for use in power metering boxes. The power metering box cabinet material prepared in this application has advantages such as excellent mechanical properties, stable environmental aging resistance, low dielectric loss, and low dielectric constant.

The invention belongs to the technical field of metallurgy, and particularly discloses low-carbon aging steel for a home appliance color-coated sheet and application. The low-carbon aging steel for the home appliance color-coated sheet comprises the following chemical components in percentage by mass: 0.005 to 0.02 percent of C, 0.01 to 0.55 percent of Si, 0.1 to 0.5 percent of Mn, 0.01 to 0.05 percent of Al, 0.1 to 0.3 percent of Ti, 0.001 to 0.003 percent of B, less than 0.003 percent of N and the balance of Fe. The formula disclosed by the invention has the advantages of excellent stamping formability, no timeliness and weldability, certain structural strength and processing flexibility, and tolerance to a baking process in a production process and environmental aging in long-term use.

The invention discloses a composite sandwich structure of dimming sunscreen glass and a preparation method of the composite sandwich structure, and relates to the technical field of sunscreen glass. In the preparation process, the boundary of a PDLC liquid crystal layer and the boundary of a composite middle layer are subjected to edge sealing by adopting an infrared laser processing technology in sequence; an upper PET material and a lower PET material in the PDLC liquid crystal layer and an upper thermoplastic film layer and a lower thermoplastic film layer of the composite middle layer are melted and then re-solidified to form a thermoplastic film layer sealing edge, meanwhile, a coating containing a photoinitiator is introduced into the PDLC liquid crystal layer and a lead-out area of an electrode lead of the solar cell piece, and a UV curing induced cross-linking reaction is carried out to generate a local net-shaped structure, so that the performance of the solar cell piece is improved. The pre-crosslinking bonding is realized; by means of the infrared laser processing technology and the UV curing technology, the stability problem of the dimming film boundary under structural pressing, environmental aging and dynamic stress can be solved cooperatively, the packaging overall quality of the multi-material interlayer structure is remarkably improved, and the service life of the multi-material interlayer structure is remarkably prolonged.

The invention relates to the technical field of solar cells, and mainly provides a photovoltaic backboard and a preparation method thereof, and a photovoltaic module. The photovoltaic backboard comprises a composite fiber layer and a base body layer which are sequentially arranged in a stacked mode. Wherein the composite fiber layer comprises a resin matrix, and continuous fibers and short fibers which are dispersed in the resin matrix. According to the technical scheme, the photovoltaic backboard is light in weight and has good mechanical property, mechanical property, wear resistance, chemical stability and environmental aging resistance.

The application belongs to the technical field of environmental aging test, and is a large and medium-sized aircraft engine nacelle structure environmental simulation test method. The overall structure of a specific test procedure and multiple action modes of accelerated aging test are determined. Then, the material characteristics of the aircraft are analyzed to determine the specific design requirements of the accelerated aging test. Finally, the use and maintenance requirements of the aircraft, the load cycle conditions, and the environmental parameters and action time are analyzed to perform the accelerated aging test. On the one hand, the aging resistance performance of the material of the special temperature-medium environmental structure of the large aircraft engine nacelle can be accurately evaluated. On the other hand, the period of the accelerated aging test in the test process is short. Through the indoor artificial accelerated aging test, the time for evaluating the aging resistance of the large aircraft in a specific environment is shortened to 3% of the natural environment. On the other hand, the requirement for the equipment for implementing the test is low, and the existing medium-resistant and heating test equipment can be used for the accelerated aging test.

The invention belongs to the technical field of optical module manufacturing, and particularly provides a method for testing effective protection duration of a barrier material, which comprises the following steps: S1, making the barrier material into a container, filling the container with solute, and sealing the container; s2, the initial mass of the container is weighed, and the container is placed at the set temperature to be subjected to an environment aging experiment; s3, recording the mass of the container at different times, and calculating the corresponding volatilization mass; s4, according to the volatilization mass and the container surface area, obtaining the change relation of the volatilization mass per unit area along with time; s5, calculating failure volatilization mass per unit area according to preset container failure concentration and container surface area; s6, according to the change relation of the unit area volatilization mass along with time and the unit area failure volatilization mass, the effective protection duration of the barrier material is obtained. According to the method, trace permeation of the solute can be accurately captured, harm caused by mass volatilization of the solute is avoided, and the solute consumption is reduced. A mold opening step is omitted, and verification cost is reduced.

The invention discloses an electrical circuit overtemperature induced fire simulation device and method, and the device comprises an electrical parameter simulation module which is used for simulating overload, short circuit and arc faults; the composite heat source loading module is used for applying external heat radiation or overload current to the electrical circuit overtemperature induced fire simulation device and carrying out a fire induction experiment; the combustion chamber is used for fixing a tested line and adjusting the heat source acting distance and angle; the environment aging module is used for simulating the aging process of the electrical circuit in a specific environment; the data acquisition module is used for acquiring temperature, current, pyrolysis gas and insulation state data in real time; and the central control module is used for realizing synchronous control of electrical parameters, heat source power and data acquisition so as to dynamically adjust the temperature rise rate and fault switching. According to the device, external thermal radiation, internal overcurrent and environmental aging pretreatment are subjected to multi-dimensional coupling, and the full-cycle electrical fire evolution process of aging degradation-thermal / electric coupling-fire induction can be simulated.

The invention relates to a formula of a high-strength medical-grade halogen-free cable sheath material. The invention aims to solve the problem that the existing medical cable sheath material has insufficient comprehensive properties in the aspects of biological safety, halogen-free flame retardance, mechanical property balance, environmental aging resistance, chemical disinfection resistance and the like. The invention provides a high-strength medical-grade halogen-free cable sheath material formula, which successfully realizes integration of excellent comprehensive performance by carefully selecting components and optimizing the proportion in order to solve the problem that the harsh medical application requirements of high strength, high flexibility, excellent flame-retardant low-smoke property, long-acting antibacterial property, wide temperature range and chemical disinfectant erosion resistance are difficult to meet at the same time, so that the high-strength medical-grade halogen-free cable sheath material has a wide application prospect. On the premise of core guarantee of biological safety and halogen-free environmental protection, mechanical property balance of the material is remarkably improved, the material has excellent long-term aging resistance and outstanding environmental tolerance, and the material is endowed with long-acting antibacterial property, so that nearly strict performance requirements of modern medical electronic equipment on cable sheath materials are comprehensively met, and the cable sheath material has wide application prospects. The key defects of the traditional PVC or conventional halogen-free flame-retardant polyolefin material in medical application are overcome.

The invention belongs to the technical field of fiber composite materials, and particularly relates to a composite material for a cylindrical shell and a preparation method thereof.The composite material for the cylindrical shell is prepared from, by weight, 100 parts of composite modified epoxy resin, 12-25 parts of composite modified MBS flexibilizer, 25-35 parts of curing agent, 0.5-2 parts of accelerant, 0.5-1.5 parts of ultraviolet light absorber and 0.3-0.8 part of antioxidant. 1-3 parts of a thixotropic agent and 180-220 parts of glass fiber; according to the composite material for the cylindrical shell, the composite modified epoxy resin and the composite modified MBS toughening agent are introduced, and a specific forming process is combined, so that the composite material finally meets the basic requirements of high strength and high modulus of a structural part, and meanwhile, the composite material also has good toughness, environmental aging resistance, mechanical property and interface bonding strength; the comprehensive performance is obviously improved.