173 results about "Retting" patented technology

The invention discloses a vacuum-assisted pultrusion preforming device for a composite material. The vacuum-assisted pultrusion preforming device comprises a yarn threading plate, a gum dipping tank, a gum extruding roller and a vacuum-assisted preforming mold which are sequentially arranged in the pultrusion direction, wherein fiber bundles penetrate through the yarn threading plate in a layered mode, the gum dipping tank is used for containing resin, and the gum extruding roller is used for extruding redundant resin. The vacuum auxiliary preforming mold is provided with a preforming mold cavity, a vacuum cavity is formed in one section of the preforming mold cavity of the vacuum auxiliary preforming mold, an air exhaust hole is formed in the upper portion of the vacuum cavity, and a semi-permeable membrane allowing gas to pass through but blocking resin to pass through is arranged at the air exhaust hole. And the air exhaust hole is externally connected with a vacuumizing device. The vacuum-assisted pultrusion preforming device can effectively discharge microbubbles in resin and fiber bundles, effectively control uniform distribution of the content of the resin and remarkably promote full infiltration of high-viscosity resin to fibers.

The invention discloses a glass fiber dipping device, which belongs to the field of glass fiber processing, and comprises a dipping box body, two sides of the upper surface of the dipping box body are rotatably connected with first guide rollers, and two sides of the inner surface of the dipping box body are rotatably connected with second guide rollers; a monitoring assembly used for monitoring the height of the liquid level in the dipping box body is arranged on one side of the dipping box body, and a tightness adjusting assembly is arranged in the middle of the front side and the rear side of the inner surface of the dipping box body. According to the glass fiber conveying device, conveying can be achieved, glass fibers can become loose gradually, the extrusion force of the glass fibers on the connecting roller becomes small, a coil spring can drive a rotating plate to rotate reversely by a certain angle, and a driving groove drives the connecting roller to expand towards the periphery gradually in the rotating process and tighten the loose glass fibers; the glass fibers are effectively ensured to be always in a tight state in the impregnation box body, the glass fibers are ensured to be conveyed more smoothly, the impregnation of the glass fibers is ensured to be more uniform, and the impregnation quality of the glass fibers is improved.

The invention relates to the technical field of composite material forming, in particular to a pultrusion process and system based on resin-based constant-pressure control, and the pultrusion process comprises the following steps: fiber guiding gum dipping: selecting a normal-pressure mode or a closed mode; collecting die cavity pressure data and pultrusion force data in real time; the pressure data of the mold cavity are compared with a set interval, and the glue injection flow and / or the pultrusion speed are / is adjusted; and comparing pultrusion data with a set interval, reversely optimizing the pressure of the mold cavity based on tension feedback, and reducing the stress of the product, and the method has the following beneficial effects that the resin supply or pultrusion speed is adjusted in real time and the pressure of the mold cavity is kept constant by combining a dual-mode resin impregnation system (normal-pressure impregnation / closed glue injection) with a mold cavity pressure closed-loop control technology. A pressure-tension cooperative control model is innovatively provided, and internal stress distribution of the product is optimized. The embodiment verifies that the pultrusion force can be reduced by more than 15%, the bubble rate can be reduced by more than 30%, and the mechanical property and the production stability of the product can be obviously improved.

The invention discloses a fiber reinforced rib mesh production system, and relates to the technical field of fiber reinforced rib meshes. A gum dipping assembly is arranged on the side face of the positioning yarn splitting frame, a weaving assembly is arranged on the side face of the gum dipping assembly, a guiding assembly is arranged at one end of the weaving assembly, and a cutting assembly is arranged on the side face of the guiding assembly; the gum dipping assembly comprises a machine body, an unwinding shaft is rotatably mounted in the machine body, a gum dipping pool is fixedly mounted on the side face of the machine body, a mounting frame is fixedly mounted at the top of the gum dipping pool, a rotating shaft is rotatably mounted at the bottom of the mounting frame, and a connecting frame is fixedly mounted on the side face of the gum dipping pool; by adapting to the weft fiber bundles with different diameters under different conditions, the movement automation degree of the weft fiber bundles is higher, the movement of the weft fiber bundles is more stable, the precision is higher during penetrating weaving, and the application range is wider.

The invention belongs to the technical field of fiber reinforced resin special-shaped profile production, and provides a production line and a production process of a co-extrusion profile, and the production line of the co-extrusion profile comprises a positioning yarn splitting frame, a yarn guiding frame, a yarn guiding frame and a yarn guiding frame, the yarn penetrating and gum dipping frame is used for conducting gum dipping on the yarn conveyed by the positioning yarn splitting frame, and the yarn penetrating and gum dipping frame is further used for installing a felt roll; the mold fixing area is provided with two mold supports, the mold supports are used for fixing a forming mold of the galvanized steel sheet reinforced special-shaped profile, and the yarn inlet side of the forming mold is fixedly connected with a pre-forming mold frame; the device further comprises traction equipment and cutting and discharging equipment. The galvanized steel plate roll is arranged between the yarn and the felt, so that the service life of the formed special-shaped profile can be guaranteed; according to the production process, the galvanized steel plate roll placing racks are arranged at different positions of the forming equipment according to different produced profiles, so that the equipment is more flexible in the production process.

A kind of carbon fiber wet winding extrusion equipment, it relates to carbon fiber extrusion field, including roller bracket, roller and glue tank, the inner side surface of the roller bracket on both sides has the axle slot of interval arrangement, the roller is inserted between the axle slot on both sides by bearing, can utilize ultra-smooth roller to carry out extrusion to carbon yarn of resin infiltration, extrude excess resin, to reach the purpose of controlling the resin content of winding layer, also can utilize the angle difference between yarn extrusion roller to optimize the shortcoming of parallel extrusion, prevent the resin that has been extruded from being bonded on roller reverse rotation secondary resin dipping.

The invention discloses an outdoor high-wear-resistance waterproof fabric and a preparation method thereof.The preparation method comprises the following steps that S1, composite fibers are spread on a transmission roller set, a glue groove is formed below one transmission roller, the transmission roller forms a glue dipping roller, and when the composite fibers pass through the glue dipping roller under the traction effect, the composite fibers are immersed in glue liquid in the glue groove to complete glue dipping; s2, drying and compounding a waterproof film and the impregnated composite fiber on a drying roller to obtain unidirectional cloth; s3, orthogonally stacking the two pieces of one-way cloth, enabling the silk surfaces of the two pieces of one-way cloth to be in contact with each other, performing plane pressurization to 8-10MPa, setting the temperature to 115-125 DEG C, and keeping the temperature for 5-10min, so as to obtain the ultrathin high-strength wear-resistant waterproof fabric. The ultra-high molecular weight polyethylene fibers have excellent wear resistance, are further combined with the glue solution through hot melting fusion, are more uniformly distributed in the fabric and can better bear friction and wear of external force, so that the wear resistance of the fabric is improved.

The invention discloses a production process of heavy aramid canvas. The production process comprises the following steps: S1, using aramid precursors as raw materials; s2, performing primary twisting on the aramid fiber protofilaments by using a rope twisting machine to form primary twisted filaments; s3, performing second twisting on the first twisted yarns by using a second twisting machine to form second twisted yarns; s4, weaving the second twisted yarns to form canvas; s5, the canvas is subjected to gum dipping treatment; wherein the impregnation formula comprises the following components in parts by weight: 0.37 part of caustic soda flakes, 14.7 parts of resorcinol, 14.7 parts of formaldehyde, 429 parts of butadiene-vinylpyridine rubber latex, 21 parts of ammonia water, 495.23 parts of water and 25 parts of isocyanate; the gum dipping speed is set to be in a periodic pulse mode. According to the method, the impregnation speed of the aramid canvas is set to be in a periodic pulse mode, so that the impregnation uniformity can be improved, the strength distribution is more consistent, and the strength loss rate is reduced. Through tests, the strength of the heavy aramid canvas can reach 4864n / mm.

The application discloses a winding forming device, comprising a rack, a glue dipping device for dipping yarn, a core mold fixing device for fixing a core mold, a winding device for winding yarn on the core mold, the glue dipping device, the core mold fixing device and the winding device being sequentially arranged along the length direction of the rack; the rack comprises a first rack and a second rack, the core mold fixing device is arranged on the first rack, and the winding device is vertically arranged on the second rack; and the first rack and the second rack are separately arranged. The winding forming device can prevent the fiber layer from deviating due to the vibration of the winding device caused by the stress of the core mold, effectively improves the qualified rate of products, and is simple in installation and dismounting operation of the core mold, high in operation efficiency and high in recycling rate of resin glue solution. The application further discloses a winding forming production line.

The present invention discloses a method for preparing an ultra-high molecular weight polyethylene fiber electric rope, which relates to the technical field of electric traction ropes. The preparation comprises the following steps: paralleling and twisting; dipping: the ultra-high molecular weight polyethylene fiber strands are transported by guide rollers to the inside of a dipping tank for dipping, and the resin glue is a mixture of triallyl isocyanurate, phenolic resin, oily polyurethane and glass microbeads; extrusion and pre-drying; preliminary drying; braiding the rope core; pre-shaping; drying and shaping; braiding a double sheath; coating. The advantages of the present invention are that when the ultra-high molecular weight polyethylene fiber electric rope is prepared, it is functionalized by the composite resin glue in the dipping tank, and through the synergistic effect between triallyl isocyanurate, phenolic resin, oily polyurethane and glass microbeads in a specific ratio, and the optimization of the processing technology, the high temperature resistance and corrosion resistance of the electric rope are improved, the overall strength is enhanced, and the insulation resistance is good, which meets the use requirements of some specific occasions.

The invention provides a high-thermal-conductivity low-modulus graphene fiber heat-conducting gasket and a preparation method thereof. Graphene fibers are directionally wound and impregnated to prepare a prepreg, the prepreg is laminated and bonded to form a high-orientation fiber plate, and then the high-orientation fiber plate is directionally cut in the direction perpendicular to the fibers to obtain the heat-conducting gasket composed of continuous vertical fibers and organic silicon. The fiber is of an X-shaped crossed network structure, and is combined with an elastic silica gel matrix to form a hinge-like structure which can be highly deformed under the orientation of 0.5-10 degrees and-10--0.5 degrees, so that the compression resilience and durability are remarkably improved, and meanwhile, efficient heat conduction is kept. According to the structure, the problems of buckling, fracture and stress concentration which are easily caused by traditional vertical or random arrangement are avoided. A one-way felt impregnation lamination cutting method is adopted, the processing problem caused by high filler is solved, the fiber content can reach 85.1 wt%, and the array density is 2.4-195.9 mg / cm. The gasket has high thermal conductivity, low modulus and excellent rebound resilience, and is suitable for thermal management of high-power electronic equipment such as electronic base stations, communication radars, new energy automobiles, aerospace and the like.

The utility model discloses a woven bamboo curtain impregnation device, and relates to the technical field of bamboo curtain impregnation devices, the woven bamboo curtain impregnation device comprises a base and an impregnation pool arranged on the base, the top of the base is provided with a support frame, and the inside of the support frame is rotatably provided with a lifting screw rod; residual glue at the upper end and the lower end of the bamboo curtain can be scraped under the condition that the bamboo curtain is not damaged through the arranged soft scraping plate, the soft scraping plate is elastically supported through the telescopic columns and the supporting springs, and it is guaranteed that the soft scraping plate has certain pressure when making contact with the bamboo curtain, and the glue can be properly scraped; normal movement of the bamboo curtain is not hindered, the uniformity of glue on the surface of the bamboo curtain is further improved, waste caused by dripping of the glue on the outside is avoided, the production cost is reduced, the fine adjustment lead screw can drive the upper soft scraping plates to ascend and descend so as to change gaps between the soft scraping plates, and the device can adapt to the bamboo curtains with different thicknesses and is suitable for popularization and application. And the application range of the device is further expanded.

The application relates to the technical field of carbon materials, in particular to a carbon / carbon heating device and a preparation method thereof.The preparation method comprises the following steps: mixing dispersed short carbon fibers, a dispersing agent, carbon material powder, water-based phenolic resin and water, stirring and uniformly dispersing, pouring into a preset shape filter tank for suction filtration to obtain a short fiber mesh reinforced sheet layer with a preset shape; performing impregnation treatment on the short fiber mesh reinforced sheet layer, and obtaining a prepreg reinforced sheet layer after drying; laying carbon fiber filaments and performing glue coating treatment, and forming a carbon fiber filament layer with a preset shape after drying; cutting a carbon fiber cloth into a preset shape and performing impregnation treatment to form a carbon fiber cloth layer; and stacking and arranging the prepreg reinforced sheet layer, the carbon fiber filament layer and the carbon fiber cloth layer in a staggered mode, wrapping the surface of a cylindrical heater mold in an oxygen-free environment, heating and curing to form a cylindrical preform, and performing carbonization, cycle densification, high-temperature purification and machining treatment to form the carbon / carbon heating device. The application can improve the uniformity of the device conductivity.

This invention provides a fiber winding and impregnation apparatus, comprising a cabinet, an impregnation assembly, a feeding roller, and a scraping assembly. The cabinet contains an operating table with an impregnation tank filled with resin, and a weighing sensor at the bottom for weighing the resin. The impregnation assembly includes an impregnation roller group extending into the impregnation tank and a power mechanism for driving the roller group to move vertically. The feeding roller is located within the cabinet on the feeding side of the impregnation assembly and is equipped with an encoder. The scraping assembly includes a rotating shaft and a scraper plate located above the rotating shaft. The scraper plate has a degree of freedom to move vertically and has an adjusting block at its top. This fiber winding and impregnation apparatus allows for adjustment of the impregnation depth and scraping force for fiber bundles of different specifications during impregnation, ensuring the performance and quality of composite material products.

The invention relates to the field of bamboo veneer processing, in particular to a method for widening a large-breadth flattened sliced bamboo veneer, which comprises the following steps of: compounding the sliced bamboo veneer with gauze or non-woven fabric by hot pressing; edge cutting and width fixing are conducted on the compounded sliced bamboo veneers; glue is smeared in the thickness direction of the sliced bamboo veneers; the sliced bamboo veneers are placed in an environment of 30-50 DEG C, and glue is dried; the dried sliced bamboo veneers are placed in a board splicing machine for pre-splicing; and hot-pressing and compounding the sliced bamboo veneer and the gauze or the non-woven fabric again to obtain a finished product. The formaldehyde-free environment-friendly adhesive is adopted, so that chemical pollution is reduced; the side face of the sliced bamboo veneer is pre-spliced and combined with gauze / non-woven fabric, multiple times of gum dipping is avoided, and gum consumption can be reduced; continuous veneers with the width of 2-10 m or above can be prepared, cloth-shaped veneering materials are achieved and directly used for wall decoration, and machining links can be reduced; the cut bamboo wood is suitable for household products such as stationery bags and computer supports, and the application dimension of the bamboo wood can be expanded.

The mold comprises an inner mold and an outer mold, the inner mold and the outer mold are each of a curved surface structure, the molded surface of the outer mold is larger than that of the inner mold, the outer mold is arranged on the outer side of the inner mold in a sleeving mode, the inner mold and the outer mold are clamped at the small end of the curved surface to form a plug, and the inner mold and the outer mold are opened at the large end; and a gap between the inner mold and the outer mold forms a space for winding reinforcement yarns. The manufacturing process is simple, and winding, gum dipping and curing shaping of the curved surface can be completed only through a simple mold. The reinforcing effect is good, all the fibers are shaped annular fibers, micro-bending of the fibers is avoided, and weight gain is little after use.

The application belongs to the technical field of carbon-based thermal protection composite materials, and discloses a kind of quick densification high tenacity carbon-based composite material and its preparation method, its preparation steps include: 1) after mixing uniformly benzoxazine resin, solvent and ceramic precursor, heating, first impregnation liquid is prepared;2) first impregnation liquid is brushed on carbon fiber cloth, and naturally air-dried, to obtain pretreated carbon fiber cloth;3) after mixing uniformly benzoxazine resin, solvent, ceramic precursor and ceramic particles, second impregnation liquid is prepared;4) second impregnation liquid is brushed on pretreated carbon fiber cloth, and dried, to obtain prepreg;5) after laminating and laying up prepreg, mould pressing is formed, to obtain blank;6) blank is heated and pyrolyzed under inert atmosphere, to obtain carbon-based composite material.The carbon-based composite material of the application can be formed and simultaneously quickly densified in only one cycle, almost realizes full densification, porosity is less than 1.5vol%, and has excellent mechanical properties and thermal protection performance.

The application relates to a non-woven fabric for filtration, and relates to the technical field of non-woven fabrics.The non-woven fabric is a multi-layer structure and comprises a dry-process framework, an ultrafiltration membrane and a reverse osmosis treatment membrane arranged in sequence; wherein the dry-process framework is prepared by using the following raw materials in the following proportions by weight through a dry-process technology: polyester fiber 20-30 parts, polyester fiber 25-35 parts, flame-retardant fiber 3-5 parts, glass fiber 2-4 parts, reinforcing agent 10-15 parts, melt-blown fiber 8-16 parts and polytetrafluoroethylene film 6-14 parts.The dry-process framework is prepared by heating and melting the fiber cloth and then cooling, so that the compactness of the dry-process framework is enhanced, and the stiffness and strength of the dry-process framework are improved.The reverse osmosis treatment membrane, the ultrafiltration membrane and the dry-process framework are used in combination, so that the strength of the non-woven fabric is further enhanced.The step of impregnation treatment is omitted, so that the pungent smell is avoided, the prepared non-woven fabric is free of glue and formaldehyde, is more environmentally friendly, has higher production efficiency and stronger applicability.

The invention belongs to the technical field of fiber resin composite materials. The invention provides a glass fiber reinforced epoxy resin plate and a preparation method thereof.The method comprises the steps that S1, an impregnator is started, 39-40 parts by weight of epoxy resin is put into a glue tank, 10-13 parts by weight of acetone is added for dilution, then 9-10 parts by weight of a curing agent, 1-1.5 parts by weight of an accelerant, 2-2.2 parts by weight of phosphoric acid activated rice hull ash and 3-3.5 parts by weight of modified melamine urate are added, and a composite glue material is obtained; s2, after the temperatures of the pretreatment section and the post-drying section of the impregnator are stable, putting 50-52 parts of glass fiber cloth into the impregnator, and starting the impregnator to obtain a glass fiber impregnated material; and S3, treating and cutting the glass fiber impregnated material by adopting a high-temperature autoclave molding process to obtain the glass fiber impregnated material. The smoke density of the glass fiber reinforced epoxy resin plate is reduced while the excellent mechanical property (tensile strength) of the glass fiber reinforced epoxy resin plate is ensured by controlling the content of the epoxy resin (namely the impregnation amount).

The invention relates to the technical field of composite materials, in particular to a long bamboo fiber reinforced composite material and a production method thereof.The long bamboo fiber reinforced composite material is formed by assembling and pressing long bamboo fibers, the length of each long bamboo fiber is not smaller than 60 mm, the diameter of each long bamboo fiber is not larger than 0.6 mm, each long bamboo fiber comprises a raw bamboo fiber core and an outer wrapping fiber layer wrapping the raw bamboo fiber core in a winding mode, and the outer wrapping fiber layer is arranged between the raw bamboo fiber core and the outer wrapping fiber layer. The raw bamboo fiber core is obtained by axially drafting continuous long bamboo fibers and dipping the continuous long bamboo fibers in glue, and the outer wrapping fiber layer is formed by performing modification pretreatment and glue-free moist heat extrusion on bamboo fiber powder. The long bamboo fiber reinforced composite material has a relatively high strength-weight ratio.

The invention discloses composite material suspension dusting equipment, and belongs to the technical field of composite material production processes. The composite material suspension dusting equipment comprises a fiber creel, a suspension liquid preparation device, a glue dipping device, a dusting device and a fiber creel, wherein the fiber creel is used for unwinding suspension liquid process fibers; the glue dipping device is used for uniformly dispersing resin and an auxiliary agent and providing a stable raw material for a subsequent glue dipping process; the dusting device is used for uniformly compounding carbon fibers and the resin and is connected with the suspension liquid preparation device; the pulse dust collector is used for uniformly scattering powder on the carbon fiber composite material, the heat-setting mold device is used for eliminating the internal stress of the carbon fiber composite material and fixing the shape of the carbon fiber composite material, the traction device is used for pulling the carbon fiber composite material to move and controlling the tension of the carbon fiber composite material, and a heat treatment furnace is arranged between the pulse dust collector and the heat-setting mold device; the suspension production process and the dusting production process equipment are optimized and integrated, and two different process production modes are realized on one production line, so that the input cost of the production line is saved.

The utility model relates to the field of processing of guide rings, and provides a high-rigidity fiber woven fabric pre-impregnation device for prepreg production, which comprises an impregnation box, a tension roller mechanism, a tension roller mechanism, a tension roller mechanism, a tension roller mechanism, a tension roller mechanism and a tension roller mechanism, and is characterized in that the tension roller mechanism is arranged in the impregnation box; the gum dipping box is mounted on the gum dipping box supporting table; the tensioning roller mechanism is mounted on the impregnation box supporting table at the same time; through the arrangement of the sliding mechanism, the replaced gum dipping box and the tensioning roller mechanism, the gum dipping box and the tensioning roller can be cleaned and replaced in time, and the quality of glue in the gum dipping box is effectively guaranteed; meanwhile, due to the arrangement of two sets, the pause time is short during replacement, and the working efficiency is effectively improved; and the tensioning roller mechanism can leave the impregnation box, when only the impregnation box needs to be replaced, the whole impregnation box does not need to be replaced, fiber cloth does not need to be cut off at the moment, and normal operation of work is effectively guaranteed.

The invention relates to the technical field of cord fabrics, in particular to a cord fabric cover protection process. According to the technical scheme, the two faces of a woven cord fabric material are impregnated, dried and cured, then a layer of latticed breathable fabric is arranged in a roller pressing combination mode, and the latticed breathable fabric is made of a flame-retardant material in a weaving mode. Grids of the latticed breathable fabric form a polygonal structure, the surface and the internal position of the latticed breathable fabric are arranged into an integral protective wear-resistant layer in a viscose coating mode, and processing is carried out in a gum dipping container in a complete gum dipping state when the viscose coating is arranged. The multi-layer protective structure has the advantages that the safety is better during use, the use range can be effectively enlarged, the multi-layer protective structure is integrated by taking the single-layer cord fabric base material as a main body, and the overall structural tightness is better by fastening and combining in the gum dipping process.

The invention relates to the technical field of carbon fiber manufacturing, in particular to a carbon fiber multifilament pultrusion production line and a production method. The gum dipping device, the primary heating and curing device, the secondary heating and curing device, the traction feeding machine, the cutting machine and the sample strip conveying machine are sequentially arranged on the machine table in the advancing direction of the carbon fiber multifilament. The unwinding machine bears the carbon fiber original roll and releases the carbon fiber bundle; the impregnation device infiltrates the carbon fiber bundles into the glue solution; the primary heating and curing device and the secondary heating and curing device are used for curing the carbon fiber bundles step by step; the traction feeding machine conveys the cured carbon fiber bundles to the cutting machine; the cutting machine performs fixed-length cutting to form a carbon fiber detection sample strip, and the carbon fiber detection sample strip is output by the sample strip conveying machine. Thus, automatic production of the carbon fiber detection sample strips is achieved, it is guaranteed that the tension, straightness and curing quality of all the carbon fiber detection sample strips are consistent, the sample preparation efficiency and quality stability are improved, and then reliable support is provided for carbon fiber multifilament quality judgment.

The invention discloses a wet winding resin content stability control system and method. The system comprises a first yarn temporary storage mechanism and a second yarn temporary storage mechanism which are sequentially arranged in the production direction. The first yarn caching mechanism comprises a first roller shaft, an elastic tensioning mechanism and a second roller shaft; the first roll shaft rotates at a constant speed, and the second roll shaft rotates at a variable speed; the elastic tensioning mechanism is arranged between the first roller shaft and the second roller shaft and used for adjusting the tension of the yarn between the first roller shaft and the second roller shaft and buffering and releasing of the yarn. The second buffering mechanism comprises a horizontal guide rail, a spring damper, a fixed pulley and a movable pulley, and yarn buffering and releasing are conducted through reciprocating motion of the movable pulley in the horizontal guide rail. By means of the system, the linear speed difference between the impregnation device and the winding head is compensated, the problem that in the prior art, the impregnation speed change is caused by the winding speed change is solved, the impregnation speed of fiber bundles is stable, and the quality of wound products is guaranteed.

The utility model discloses a gum dipping device for carbon fiber cloth production, which relates to the technical field of gum dipping of carbon fiber cloth and comprises a gum storage tank, guide blocks are vertically and fixedly connected to two sides of the upper end of the gum storage tank, guide rollers are horizontally and rotatably mounted between the guide blocks, and a vertical telescopic mechanism is mounted in the middle between the guide rollers. A stirring mechanism is mounted on the inner side of the glue storage tank at the lower end of the vertical telescopic mechanism; heating mechanisms are mounted on the inner walls of two ends of the glue storage tank; according to the utility model, the telescopic cylinder and the sliding block are matched with each other, so that the compression roller can move downwards conveniently, the high efficiency of full impregnation of the carbon fiber cloth is improved, the function of preventing different tensions during impregnation of the carbon fiber cloth is further realized, and the curved bar is matched with the sliding block and the sliding chute connecting rod, so that glue solidification is prevented conveniently, the impregnation convenience is improved, and the production efficiency is improved. Therefore, the function of rapid gum dipping is achieved, and the problems that the gum dipping thickness is not uniform, and the orientation degree and the performance uniformity of fibers are difficult to guarantee are finally solved.

The invention discloses a large-scale wind power blade carbon fiber pultrusion plate preparation method based on multistage gradient regulation and control, and the method comprises the steps: installing a required number of carbon fiber bobbins on a creel, leading out carbon fibers from the carbon fiber bobbins, and uniformly arranging the carbon fibers to form a carbon fiber yarn bundle layer; performing resin infiltration on the carbon fiber yarn bundle layer through three impregnation tanks with different viscosity gradients in sequence; preforming the resin-impregnated carbon fiber yarn bundle layer into a plate through a preforming mold, respectively covering the plate with demolding cloth, and feeding the plate into a forming mold; performing multi-stage gradient curing on the preformed plate to obtain a carbon fiber pultrusion plate; and cooling the carbon fiber pultrusion plate, and finally rolling or cutting the carbon fiber pultrusion plate. The preparation method can effectively solve the problems of low production efficiency, high porosity, insufficient interlayer shear strength and the like in preparation of the carbon fiber pultrusion plate.

A kind of continuous fiber wet winding process technology method and device of post large tension, it is characterized in that, including the following procedures: fiber yarn route design, fiber spread yarn thinning control, impregnation auxiliary adjustment, winding resin preparation, fiber impregnation adjustment, impregnated fiber spread yarn extrusion glue adjustment, winding tension adjustment, winding line design, solidification and mechanical property test.The device of the application is simple, can be popularized and applied, and low wear winding under large winding tension can be realized.The present application effectively solves the process problem that traditional process cannot simultaneously realize fiber low damage impregnation and fiber large tension precision winding by designing special winding device and matching winding process, and provides an efficient process technology path for realizing high fiber volume content and high mechanical property fiber composite material preparation.

The application provides a thermoplastic polyimide prepreg preparation method and a special device thereof, and preparation includes unwinding, cloth storage and desizing, one-time impregnation, secondary impregnation, pre-drying, three-time impregnation and drying and the like. The application adopts three-time impregnation process and special one-time impregnation device and drying device, realizes solvent method preparation of high-performance thermoplastic prepreg, and solves the problems of low resin content, insufficient impregnation, insufficient flatness of the prepreg, and defects such as air holes and pitting. The method has high preparation efficiency and less wear, the prepared prepreg has uniform fiber impregnation, smooth surface, uniform thickness, high strength and impact resistance, can be stored for a long time and recycled, and is suitable for manufacturing of resin prepreg with high melt viscosity and soluble in proper single or mixed solvent. The prepared prepreg can be applied to the manufacturing of lightweight high-performance parts in the fields of rail transportation, aerospace, weapons and the like.

The utility model provides a fiber impregnation device for wet winding, belongs to the technical field of wet winding of carbon fibers, and aims to solve the problem that the impregnation efficiency of carbon fiber tows is affected due to the fact that the permeation speed of attached fiber resin is low. Comprising a gum dipping box main body, a guide mounting frame, a carbon fiber unwinding roller, a limiting transmission shaft, a position adjusting piece and a carbon fiber carding plate, the guide mounting frame is fixedly connected to the left side of the gum dipping box main body; the carbon fiber unwinding roller is positioned on the left side of the gum dipping box main body; the limiting transmission shaft is rotationally connected to the left side of the gum dipping box main body; the position adjusting piece is rotationally connected to the upper part of the gum dipping box main body; the carbon fiber carding plate is fixedly connected to the lower part of the position adjusting piece; according to the impregnation device, the permeation speed of resin is increased, and the impregnation efficiency of the carbon fiber tows is improved.