1520 results about "Fibre reinforcement" patented technology

The present invention relates to a basalt fiber reinforced asphalt concrete, which includes: an asphalt material with a penetration grade between 40-300 at room temperature, selected from one of an asphalt mortar, an oil-soluble asphalt, an emulsified asphalt, and a modified asphalt; an aggregate having a first volume percentage between 50-80%; a basalt fiber reinforcement with a second volume percentage between 0.1-0.9%; and a chemical admixture for asphalt concrete used to adjust the properties of the basalt fiber reinforced asphalt concrete.

A battery protection bottom plate, a composite protection structure for a battery pack, and a vehicle. The battery protection bottom plate comprises an upper fiber reinforced resin layer, a metal plate, a fiber reinforced resin frame, and a lower fiber reinforced resin layer; the metal plate and the fiber reinforced resin frame are located between the upper fiber reinforced resin layer and the lower fiber reinforced resin layer; the metal plate is located inside the fiber reinforced resin frame; the top surface of the fiber reinforced resin frame is integrally connected to the upper fiber reinforced resin layer; the bottom surface of the fiber reinforced resin frame is integrally connected to the lower fiber reinforced resin layer.

The invention discloses basalt fiber reinforced anti-crack road concrete and a preparation method thereof, and belongs to the technical field of concrete preparation, and the preparation method specifically comprises the following steps: transferring a concrete precursor into a mold, transferring the mold to a vibration table, vibrating for 1-2 minutes, scraping the raised part of the surface by using a scraper, covering the surface of the material with a preservative film, and drying to obtain the basalt fiber reinforced anti-crack road concrete. Performing post-treatment to obtain the anti-crack concrete. The preparation method comprises the following steps: cleaning basalt fibers, activating, carrying out surface modification, curing to obtain composite basalt fibers, hydrolyzing a borosilicate monomer to prepare modified borosilane with a double-bond structure, converting the double-bond structure into an epoxy group through an epoxidation reaction to obtain a modified curing agent, and preparing the composite basalt fibers by using the modified curing agent and the modified borosilane as additives. And mixing with cement and other materials to obtain the wear-resistant, fracture-resistant and corrosion-resistant anti-crack concrete.

The invention discloses a glass fiber reinforced epoxy resin composite material and a preparation method thereof, and relates to the technical field of composite materials, and the preparation method comprises the following steps: carrying out organic solvent immersion treatment, cleaning and drying on glass fibers to obtain pretreated glass fibers; respectively carrying out phytic acid modification treatment on the pretreated glass fibers and hollow alumina microspheres; performing plasma surface treatment on the glass fibers and the hollow aluminum oxide microspheres subjected to the phytic acid modification treatment; mixing and dispersing epoxy resin, a curing agent, the glass fibers subjected to plasma surface treatment and the hollow aluminum oxide microspheres according to a preset mass ratio; carrying out vacuum degassing on the mixture; and injecting the degassed mixture into a mold for step-by-step curing. The preparation method has the beneficial effects that active groups are introduced to the surfaces of the glass fibers through phytic acid treatment, the number of the active groups is further increased by combining plasma surface treatment, and the interface bonding capacity of the glass fibers and an epoxy resin matrix is remarkably improved.

The invention discloses a carbon fiber reinforced modified resin material and a preparation method thereof, and belongs to the technical field of high-molecular compound compositions.The preparation method comprises the steps that 40-60 parts of acidified carbon fibers, 8-12 parts of silane coupling agent modified graphene oxide, 10-20 parts of polyethylene glycol and 3-8 parts of alkylphenol polyoxyethylene ether are ultrasonically mixed to be uniform with acetone as a solvent, and a mixture I is obtained; mixing 100 parts of epoxy resin and 30-50 parts of a curing agent, heating and stirring until the mixture is melted to obtain a mixture II; the mixture I and the mixture II are placed in a vacuum drying oven to be mixed and stirred, the obtained product is placed at the room temperature and then subjected to heating curing treatment, and the carbon fiber reinforced modified resin material is obtained, so that the interface bonding strength of the composite material is remarkably improved by optimizing the formula, and the composite material has excellent mechanical properties; the composite material has a wide application prospect in the fields of aerospace, automobile manufacturing, electronics and other high-performance composite material requirements.

The invention provides a regenerated crude fiber modification method and a fiber-reinforced ultra-high performance concrete preparation method. The regenerated crude fiber modification method comprises the following steps: treating a fiber reinforced composite material into crude fibers through cutting; carrying out surface cross-linking agent treatment on the crude fibers and drying; the method comprises the following steps: immersing crude fibers into a graphene oxide solution, gradually increasing the temperature of the solution, stirring the crude fibers, and then drying to obtain modified fibers. The modified crude fiber is mixed with cement, silica fume, fine aggregate and other components to prepare fiber-reinforced ultra-high performance concrete, and the strength of an interface transition area between the crude fiber and concrete can be improved. The method provided by the invention has a simple and efficient process flow, is very suitable for large-scale industrial production, provides a technically feasible and simple-to-operate approach for optimizing and recovering utilization of crude fibers in ultra-high performance concrete, and has important significance for promoting high-valued recovery of fiber reinforced composite materials, especially wastes of the fiber reinforced composite materials.

The invention relates to the technical field of metal and fiber reinforced plastic dissimilar material connection, in particular to a dissimilar material high-quality lap welding method based on laser surface treatment, which comprises the following steps: S1, carrying out laser surface treatment on a to-be-welded area of a metal plate, etching a target microstructure in the to-be-welded area, and introducing a new polar functional group; and S2, the treated metal plate and the fiber reinforced composite plate which is not treated are subjected to friction stir lap welding. The method has the advantages that the microstructures are more compact in arrangement, the utilization rate of the area of a to-be-welded area is increased, the connecting area between dissimilar materials is further increased, the microstructures are more layered in space, the welding internal stress of the to-be-welded area can be effectively reduced, stress distribution is more uniform, and the welding quality is improved. And the strength and the fatigue performance of a welding joint are greatly improved.

The invention provides a method for calculating the heat conductivity coefficient of an aerogel composite material, and relates to the field of aerogel composites.The method for calculating the heat conductivity coefficient of the aerogel composite material builds an objective function model through cyclic nesting and collaborative parallelization and specifically comprises the steps of A, input parameter obtaining, B, four-stage model building, C, three-stage model building, D, two-stage model building and E, first-stage model building. And F, constructing an objective function. According to the method, the optimal volume ratio and the optimal diameter of the basalt fiber in the composite material can be rapidly and accurately determined, guidance is provided for research, development and design of the fiber reinforced aerogel composite material, and the thermal insulation performance of the basalt fiber aerogel composite material is optimal on the premise that the mechanical property of the basalt fiber aerogel composite material is balanced.

The invention discloses a concrete anti-cracking method and system based on fiber reinforcement, and belongs to the technical field of concrete anti-cracking. The method comprises the following steps: acquiring real-time strain data in concrete through a distributed optical fiber sensor; analyzing the data to obtain a three-dimensional crack propagation path containing a crack initiation position, a propagation angle and a tip position; identifying the dominant development direction of the crack and a fan-shaped potential expansion interval which extends at an expansion angle by taking the tip as a vertex based on the path data; in the potential expansion interval of the to-be-poured area, a fiber distribution layer arranged in the dominant development direction is formed through directional arrangement equipment; and the fiber-reinforced anti-cracking structure is formed through vibrating and compacting treatment. According to the invention, directional blocking of fibers to crack expansion is realized, the problem of disordered expansion of cracks is effectively solved, and the anti-cracking efficiency of concrete is improved.

The invention discloses a high-viscosity silicone rubber composite material and a preparation method thereof.The preparation method comprises the steps that a silicon-based polymerization solution and a silane raw material are mixed on the basis of a rotary dropper, and a silicon-based liquid compound containing a spiral laminated layer is obtained; the preparation method comprises the following steps: dispersing a nano-filler into a silicon-based liquid compound for synthesis treatment, carrying out crosslinking treatment on the obtained primary compound and peroxide to obtain a crosslinked compound, mixing the crosslinked compound with a fiber compound, and carrying out plasma treatment to obtain a fiber-reinforced compound; performing secondary cross-linking treatment on the fiber reinforced compound and a peroxide silicone oil solution in a vacuum high-temperature environment to obtain a secondary cross-linked compound; and immersing the secondary cross-linked compound into a turbid liquid containing nano aluminum oxide, and carrying out heating treatment to obtain a finished product of the high-viscosity silicone rubber composite material. According to the invention, the problem of compatibility between the filler and the matrix material is solved, the processability is improved, and the performance of the material in multiple aspects such as high temperature resistance and aging resistance is further improved.

The invention belongs to the technical field of functional composite fibers, and discloses a wear-resistant nanofiber-reinforced protective graphene fiber and a preparation method and application thereof.The wear-resistant nanofiber-reinforced protective graphene fiber comprises a graphene fiber tow and nanofibers, the nanofibers coat the graphene fiber tow in a three-dimensional porous network mode, and the nanofibers coat the graphene fiber tow in a three-dimensional porous network mode. Forming a stress buffer layer; wear-resistant particles are uniformly loaded in the three-dimensional porous network; the preparation method comprises the following steps: fixing the graphene fibers subjected to surface pretreatment on an electrostatic spinning nano-yarn machine, forming a nano-fiber membrane by utilizing electrostatic spinning, uniformly wrapping the graphene fibers subjected to surface pretreatment with the nano-fiber membrane, then rolling into a shaft, and then carrying out hot-pressing roller treatment on the rolled fiber bundle, so as to obtain the graphene nano-yarn. The wear-resistant nanofiber reinforced protective graphene fiber is prepared; the graphene fiber is used for weaving to obtain the graphene fiber fabric. The fiber prepared by the invention and a fabric woven by using the fiber have excellent mechanical properties, wear resistance, electric conductivity and heat conductivity.

A fiber reinforced laminate pipe joint can include a first pipe, a second pipe, where the first pipe and the second pipe can be fiber reinforced laminate pipes, and a pipe joint insert. The pipe joint insert can be partially inserted inside the first pipe and can be partially inserted inside the second pipe. The pipe joint insert can be bonded to the first pipe and the second pipe, where the pipe joint insert can include a fiber reinforced laminate, where a bonding agent in the fiber reinforced laminate of the pipe joint insert can be distinct from a bonding agent used to bond the pipe joint insert to the first pipe.

The invention discloses an intelligent manufacturing system and process for a corrugated steel cylinder fiber reinforced pipe structure, and relates to the technical field of industrial automatic control, the system comprises a real-time monitoring module used for monitoring the machining quality of a plurality of procedures, a central processing module used for carrying out instantaneous analysis on data of the real-time monitoring module and generating a regulation and control instruction, and a processing module used for processing the regulation and control instruction. On the basis of data collected by the real-time monitoring module and output of the central processing module, closed-loop control over the whole process from data collection and analysis to equipment adjustment is achieved, it is ensured that the quality parameters of all procedures are stabilized within the qualified range, and therefore the precision, high efficiency and intelligentization of the pipe manufacturing process are achieved; the problems that in the production process, manual control is dominant, all manufacturing procedures are relatively independent, and effective integration and collaboration are lacked are effectively solved.

The invention relates to the technical field of wave-transparent composite materials, in particular to a fiber-reinforced resin-based wave-transparent composite material and a preparation method thereof. The cyanate ester resin matrix is modified by thermosetting polyphenyl ether, the dielectric property of the cyanate ester resin is remarkably improved, the glass-transition temperature of the cyanate ester resin is maintained, and the problems of high curing temperature, poor toughness of a cured product, poor manufacturability and the like of the cyanate ester resin are solved by compounding the catalyst and the flexibilizer. The obtained cyanate ester resin system has excellent dielectric properties and humidity and heat resistance, also has good mechanical properties and manufacturability, meets the requirements of hot melt method prepreg preparation and autoclave molding process, and prepares a wave-transparent composite material with low dielectric properties.

A resin-based barrier comprises a body having a skin of fiber-reinforced resin. The body includes a top, a bottom, a front end, and a back end. A vertical shear web runs between the top and the bottom and is substantially perpendicular to the top and the bottom. Moreover, spaces between the vertical webbing and between the longitudinal webbing are filled with a high-density closed-cell foam. The barrier may be used as a temporary traffic barrier during road construction.

The invention provides a method and system for reinforcing a tunnel based on a fiber reinforced cement-based composite material, and relates to the technical field of tunnel repair, and the method comprises the following steps: obtaining tunnel surface stress data information and three-dimensional point cloud data thereof; and inputting the stress data information into a preset damage judgment model to determine a tunnel damage area. And applying the damage area information to a damage expansion trend prediction model to obtain a future damage development trend. And preprocessing the three-dimensional point cloud data, and extracting damage features of the tunnel, including deformation and crack features. Damage features are analyzed and evaluated through the multi-scale fractal dimension, and reinforcement position analysis is carried out in combination with fractal dimension values of the damage features, damage area information and an extension trend prediction result. And generating a reinforcement scheme based on the to-be-reinforced position information and the historical reinforcement scheme, and finally determining a reinforcement scheme of the tunnel by using the fiber-reinforced cement-based composite material. The method effectively improves the safety and durability of the tunnel.

In order to solve the problems that an existing stretchable circuit board is large in impedance and short in service life, the stretchable circuit board comprises an elastic substrate and an elastic packaging layer, the elastic packaging layer covers the surface of one side of the elastic substrate, and the elastic packaging layer covers the surface of the other side of the elastic substrate. A fiber reinforcement area is formed on one side, facing the elastic packaging layer, of the elastic substrate, a glass fiber layer penetrating through the elastic substrate is arranged in the fiber reinforcement area, a line groove is formed in the fiber reinforcement area, the glass fiber layer partially penetrates through the line groove, the line groove is filled with a liquid metal coating, and the liquid metal coating is arranged on the elastic substrate. And a circuit pattern is formed by the liquid metal coating in the circuit groove.

The present invention discloses a continuous fiber reinforced polyethylene composite pipe hot prefabricated crimping joint and a method thereof, and relates to the technical field of crimping joints, including a positioning ring, a side connecting frame is installed on the outer wall of the positioning ring, and a shifting distance adjusting member connected to a movable link is arranged on the side connecting frame. The present invention sets a shifting distance adjusting member, rotates a bidirectional screw after limiting the position of the composite pipe and the joint, and causes two limit sliders on the bidirectional screw to move toward each other through the rotation of the bidirectional screw. As the limit slider moves, the oblique guide plate approaches the reversing gear, and the limit slider continues to move. At this time, the oblique guide plate will squeeze the measuring rod, so that the measuring rod moves upward relative to the positioning guide plate, and at the same time, one end of the composite pipe and the joint will partially overlap. At this time, the value of the scale line corresponding to the top of the positioning guide plate is observed to know the overlapping length of the composite pipe and one end of the joint, so as to accurately adjust the connection length of the composite pipe and the joint.

A structural component serves as a container for a vehicle. The structural component comprises a trough-shaped container section, an edge region, and fastening elements that are provided in the edge region. The container section forms a compartment and defines a bottom region and two or more wall regions, which are at least sectionally inclined with respect to the bottom region. The two or more wall regions are arranged between the bottom region and the edge region. The fastening elements are arranged and distributed around the container section. The container section and the edge region are formed of an injection moldable fiber reinforced thermoplastic material. The structural component at least sectionally has a porous internal structure that is formed by foaming the thermoplastic material.

The utility model relates to the field of new energy, and discloses a battery bottom protection plate which comprises an impact release layer, a first fiber reinforced resin layer, a metal layer, an impact absorption layer and a second fiber reinforced resin layer, and the first fiber reinforced resin layer, the metal layer and the second fiber reinforced resin layer are all arranged between the impact release layer and the impact absorption layer. And the impact release layer, the first fiber reinforced resin layer, the metal layer, the second fiber reinforced resin layer and the impact absorption layer are laminated. The battery bottom guard plate has the beneficial effects that the battery bottom guard plate adopts the design concept of gradient energy absorption and has high impact resistance, and meanwhile, the multi-layer composite structure can be produced in different processes, so that the heat dissipation between layers is reduced, the interface bonding force is improved, the reliability of the bottom guard plate is improved, the protection function of the bottom guard plate is ensured, and the service life of the bottom guard plate is prolonged. And the battery pack can be well protected.

The invention relates to the technical field of composite pipelines, in particular to a continuous fiber winding reinforced polyethylene composite pipe and a preparation method of the continuous fiber winding reinforced polyethylene composite pipe. The fiber reinforced layer is wound on the inner-layer polyethylene pipe, the outer polyethylene protective layer is wound outside the fiber reinforced layer, and the outer reinforced pipe is wound on the surface of the outer polyethylene protective layer. The continuous fiber winding reinforced polyethylene composite pipe prepared by the invention has excellent flexibility, the production process is simple, the production efficiency is high, and all production procedures of multi-layer compounding can be realized through one station.

The invention discloses a composite material barrel shell, a spliced buoy and a floating mat structure, the composite material barrel shell comprises a barrel shell body which is continuously formed by adopting a fiber reinforced material through a pultrusion process, and a mounting plane of a plane structure is formed at the top of the barrel shell body; the two sides, in the width direction of the barrel shell body, of the installation plane protrude to form installation turned-over edges. The spliced buoy comprises a plurality of composite barrel shells and spliced plugs, and barrel shell bodies are linearly arranged in the length direction. Due to the fact that the whole top face of the barrel shell body is the installation plane of the plane structure, assembling connection with an upper structure is facilitated, all the installation planes and the installation turnups can support the upper structure, and the splicing type floating barrel can be conveniently and flexibly spliced to obtain the splicing type floating barrel with the needed length according to actual requirements. And meanwhile, the splicing operation is simple, and the splicing efficiency is high. The 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 method for treating an interface between a resin-based composite material and an aviation alloy. The method comprises the following steps: firstly, processing a micro inverted taper hole in a to-be-bonded surface of an alloy, then carrying out surface treatment, then coating a thermoplastic elastic adhesive on the to-be-bonded surface, putting the to-be-bonded surface into a vacuum oven for treatment, taking out the to-be-bonded surface, and carrying out heating, pressurizing and co-curing with a composite material. The micro inverted cone hole can remarkably increase the bonding area of the resin-based composite material and the alloy, and the inverted cone structure can effectively prevent debonding caused by mismatching of thermal expansion coefficients of an adhesive and a metal interface in the temperature change process; the thermal expansion coefficient of the thermoplastic elastic adhesive is between the thermal expansion coefficient of the resin-based composite material and the thermal expansion coefficient of the alloy material, the thermoplastic elastic adhesive has certain flexibility, a buffer layer is formed between the fiber-reinforced resin-based composite material and an alloy interface through the adhesive, and the probability that in the cooling process of the fiber-reinforced resin-based composite material and the alloy, the thermal expansion coefficient of the fiber-reinforced resin-based composite material and the alloy is lowered can be effectively lowered. And the interface thermal residual stress is caused due to the large difference between the thermal expansion coefficients of the two.

The invention relates to the technical field of mechanical parts, and discloses a high-bearing engineering plastic worm gear applied to a light truck electric power steering system and a manufacturing process, and the manufacturing process comprises the following steps: pretreatment of a polymer base material, preparation of a composite reinforcing material, preparation of an injection molding raw material, precise injection molding, post-treatment and detection. After a polymer base material is subjected to fluorination activation treatment, the surface energy of the material is reduced, the interfacial compatibility with a composite reinforced material is enhanced, and through the synergistic effect of chemical bonding and physical anchoring formed between matrix resin and a modified reinforcement body, the interfacial layering tendency of engineering plastic and a fiber reinforced phase is overcome, so that stress transmission is more uniform; meanwhile, the functional additive components generate an in-situ synergistic effect in the precise injection molding process, and form a multi-stage enhanced network with matrix resin, so that the worm wheel matrix is endowed with excellent overall bearing strength and fatigue fracture resistance, and the structural integrity under the working conditions of high load and high-frequency steering is ensured.

The utility model relates to a directional metal fiber reinforced butterfly-shaped concrete slab which comprises a concrete slab main body, and arc-shaped grooves are formed in the two sides of the concrete slab main body in an inward and opposite concave mode so that the concrete slab main body can be in a butterfly shape. The middles of the two arc-shaped grooves extend in the tangential direction of the arc-shaped grooves to separate a parallelogram-like tension-compression mixed stress area and two main pressure stress areas with trapezoid-like opposite angles in the concrete slab body area, and the tension-compression mixed stress area and the main pressure stress areas are formed through pouring of concrete doped with metal fibers. The metal fibers in the tension-compression mixed stress area are directionally distributed in a consistent direction after a directional magnetic field is applied, the metal fibers in the main pressure stress area are distributed in a disordered direction, the structural design is reasonable, industrial production can be achieved, and the production efficiency is improved. The method has the advantages of being convenient to construct, reducing structural dead weight, improving structural size precision and quality and reducing the steel bar consumption of the structure.

A vehicle body pillar structure using a fiber-reinforced resin composite includes two or more tubular members and a metal plate. The two or more tubular members are made of a fiber-reinforced resin and have respective axes along a vehicle body height direction. The metal plate is disposed between two of the two or more tubular members arranged in a vehicle body front-rear direction, and extends along the vehicle body height direction and a vehicle width direction.

The invention relates to the technical field of sheet conveying production, in particular to a continuous fiber reinforced thermoplastic composite sheet conveying production line which comprises two conveying frames, a conveying belt is arranged between the two conveying frames, and fixing plates are fixedly connected to the left portions of the upper ends of the two conveying frames. The upper ends of the two fixing plates are jointly and fixedly connected with a top plate. According to the continuous fiber reinforced thermoplastic composite sheet conveying production line, the continuous fiber reinforced thermoplastic composite sheet is extruded through the pressing rollers, bubbles possibly generated in the composite sheet in the thermoplastic process can be reduced, and therefore the compactness and structural integrity of the composite sheet are improved; and a spring is arranged in the extrusion mechanism, so that self-adaptive pressing of the composite sheets with different thicknesses can be realized, the equipment can quickly switch corresponding cold source or heat source types according to the materials, thicknesses or process requirements of the different composite sheets, and the adaptability of the production line to diversified production requirements is enhanced.

The invention discloses a fiber-reinforced resin-based composite board, a composite board component and a preparation method.The fiber-reinforced resin-based composite board comprises a first preformed body and a second preformed body, and the first preformed body and the second preformed body are matched to form a hollow structure with a cavity; the first preformed body and the second preformed body are formed by laying fiber prepregs layer by layer in different directions, so that fibers in the first preformed body and the second preformed body are distributed in different directions. According to the fiber-reinforced resin-based composite board prepared by adopting a two-step method, the porosity in the composite board can be greatly reduced, the fibers are in a straightened arrangement state, and the bearing performance or mechanical performance of the fiber-reinforced resin-based composite board is superior to that of a laminated board, a plate rib structure composite board and a pultrusion hollow structure composite board under the same thickness. The problem that in the prior art, bearing capacity, light weight and sound insulation performance of a plate, especially a vehicle body plate are difficult to consider at the same time is solved.

The present invention relates to a fibrous preform of a core portion of a fibrous reinforcing material of a composite material part, which has an elongated shape along the longitudinal direction X and is formed by first yarns C1 to C16 extending along the longitudinal direction and second yarns t1 to t8 crossing the first yarns. In the fibrous preform, the preform includes two longitudinal ends intended for articulation joining with other parts and an intermediate region located between the longitudinal ends. Each longitudinal end has a thickness greater than the thickness of the intermediate region. The intermediate region includes first non-woven yarns C5 to C12. Each longitudinal end includes a reinforcing segment 102c including a three-dimensional weave of a first non-woven yarn and a second yarn of the reinforcing segment.

The rock-fill dam anti-knock tough panel structure comprises an anti-knock tough panel and a transition cushion layer which are arranged on the upstream side from outside to inside, a rock-fill body is arranged on the downstream side of the transition cushion layer, a wave wall is arranged at the top end of the anti-knock tough panel, a toe board is arranged at the bottom end of the anti-knock tough panel, and the anti-knock tough panel and the transition cushion layer are arranged on the downstream side of the transition cushion layer. The portion, close to the transition cushion layer, of the anti-knock tough panel is a common concrete layer, the portion, away from the transition cushion layer, of the anti-knock tough panel is a fiber-reinforced high-performance concrete layer, and the portion between the common concrete layer and the fiber-reinforced high-performance concrete layer is filled with wave-absorbing and energy-dissipating materials. On one hand, the anti-cracking and anti-seepage capacities of the panel are improved; and on the other hand, explosion impact is resisted and absorbed through the functional gradient panel, and the anti-explosion capacity of the panel is improved. Meanwhile, all the components of the panel can be partially or integrally replaced according to the damage condition after explosion, rapid repairing of the panel structure is achieved, and the design target of the anti-explosion toughness of the concrete faced rockfill dam is achieved.