WO2022007038A1 - Procédé et appareil de préparation d'un corps, de section transversale régulière, en résine renforcée par une fibre unidirectionnelle - Google Patents

Procédé et appareil de préparation d'un corps, de section transversale régulière, en résine renforcée par une fibre unidirectionnelle Download PDF

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Publication number
WO2022007038A1
WO2022007038A1 PCT/CN2020/104978 CN2020104978W WO2022007038A1 WO 2022007038 A1 WO2022007038 A1 WO 2022007038A1 CN 2020104978 W CN2020104978 W CN 2020104978W WO 2022007038 A1 WO2022007038 A1 WO 2022007038A1
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hot
melt resin
fiber
continuous
unidirectional
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PCT/CN2020/104978
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English (en)
Chinese (zh)
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朱华平
田宇飞
沃晓剑
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江苏奇一科技有限公司
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Publication of WO2022007038A1 publication Critical patent/WO2022007038A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
    • B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
    • B29B15/10—Coating or impregnating independently of the moulding or shaping step
    • B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
    • B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires

Definitions

  • the invention belongs to the technical field of long-fiber reinforced thermoplastic composite materials, and in particular relates to a preparation method and equipment for a unidirectional fiber reinforced resin body with regular cross-section and fixed length.
  • LFT long glass fiber reinforced polypropylene
  • the LFT technology on the market mainly uses the yarn roll, spread the yarn, and then infiltrate the die head, and then pull and pelletize it.
  • the die head infiltration can easily lead to problems such as broken glass fiber and hairiness.
  • the die head infiltration is due to Its molding mechanism requires the glass fiber to pass through the infiltration tank, and it is difficult to achieve a glass fiber content of more than 60%.
  • the flame retardants on the market such as polyphosphates have poor temperature resistance, and the die head Wetting must be carried out at high temperature, resulting in easy decomposition of the flame retardant in the wetting die, and the flame retardant performance of LFT long glass fiber cannot be achieved.
  • the preparation process and preparation equipment of the unidirectional fiber reinforced resin body with regular cross-section and fixed length proposed by the present invention the unidirectional continuous fibers do not need to pass through the extruder, avoid the situation of fiber damage, and the content is not affected by the extruder Limitation control, there is a very large adjustment space, processing temperature, material residence time, etc. can meet the high temperature requirements of flame retardants, can be made into 30% to 85% LFT products, and can be made into flame retardant reinforced LFT materials .
  • the present invention proposes a method and equipment for preparing a unidirectional fiber reinforced resin body with regular cross-section, which is a pattern structure in which a hot-melt resin coating guide roller and multiple stages are arranged in series in parallel and alternately.
  • An open continuous fiber and hot-melt resin roll impregnation device composed of impregnation unit modules; a group of extrusion equipment dies coats the hot-melt resin on the surface of the hot-melt resin coating guide roller by extrusion to form a A hot-melt resin film layer with uniform layer thickness; the hot-melt resin coating guide roller is driven independently, and its rotation speed can be set independently.
  • a layer of hot-melt resin film with uniform thickness on the surface of the guide roller is applied on a row of unidirectional continuous and uniformly flattened fiber bodies;
  • the continuous fiber and the hot-melt resin are fused and impregnated into the unit, and at least one group of unidirectional fiber-reinforced resin body sub-units with regular cross-section is made by splitting, integrating and cooling the shaping cavity device along its width direction;
  • unidirectional fiber-reinforced resin body subunits with regular cross-sections are cut into unidirectional fiber-reinforced resin bodies with regular cross-sections of a certain length by a transverse cutting device.
  • a set of hot-melt resin coating guide rollers and a set of extrusion equipment die head devices are respectively arranged on the upper and lower sides of a row of unidirectional continuous and uniformly flattened fiber bodies; the upper and lower hot-melt resin coating guide rollers are respectively provided Continuously coat the hot-melt resin provided by a corresponding set of extrusion equipment dies on the surface of the hot-melt resin coating guide roller to form a hot-melt resin film layer with uniform thickness; apply hot-melt resin through the upper and lower layers
  • the rotating motion of the guide rollers respectively applies a layer of hot-melt resin film with uniform thickness on the surface of the upper and lower hot-melt resin smear guide rollers on the top and bottom of a row of unidirectional continuous and uniformly flattened fiber bodies.
  • a group of hot-melt resin coating guide rollers and a group of extrusion equipment die head devices are arranged on the upper part of a row of unidirectional continuous and uniformly flattened fibrous bodies;
  • a set of hot-melt resin extrusion equipment die head device is set; through the rotation of the upper hot-melt resin coating guide roller, a uniform thickness of hot-melt resin film layer coated on the surface of the hot-melt resin coating guide roller is spread on the A row of unidirectionally continuous and uniformly flattened fibers is on the upper side; at the same time, a set of extrusion equipment dies are arranged at the lower part of a row of unidirectionally continuous and uniformly flattened fibers to uniformly extrude and apply the hot-melt resin to a row of uniformly flattened fibers.
  • the reference plane of the die outlet lip of the extrusion equipment is parallel to the axis of the hot-melt resin coating guide roller, and the hot-melt resin coating guide roller surface is used as the benchmark, and the extrusion equipment is set according to the set angle and gap.
  • the position of the extrusion die for the hot-melt resin film is 0.1-10 mm;
  • the setting range of the gap between the outlet lip of the extrusion die of the hot-melt resin film of the extrusion equipment and the surface of the hot-melt resin coating guide roller is 0.1-10 mm;
  • the extrusion equipment The angle between the hot melt resin film extrusion die and the horizontal plane is set in the range of 10 to 150 degrees;
  • the open continuous fiber and hot-melt resin roll impregnation device is composed of a plurality of impregnation unit modules with a character structure, which are arranged in series in a staggered and parallel manner; each impregnation unit module is composed of three groups of impregnation and applicator rollers. It is arranged in a character structure; the impregnation unit modules of the character structure composed of three groups of applicator rollers are respectively arranged in two forms: the character structure of the genuine character and the character structure of the inverted character; the impregnation unit module is based on the structure of the genuine character and character And the structure of the inverted pin character is in the form of a series, in an interval, parallel, and staggered arrangement;
  • the center distance between the three groups of dipping and applicating rollers of each dipping and applicating unit module can be adjusted. Adjust the setting; by adjusting the center distance of the dip coating roller of the dip unit module, set a row of unidirectional continuous and evenly flattened fibers and the wrapping angle of the coating roller; a row of unidirectional continuous and uniformly flattened fibers and the genuine character structure
  • the wrapping angle of the coating roller at the top of the dipping unit module, or the set range of the wrapping angle of the coating roller at the bottom of the dipping unit module with the inverted character structure is 15 to 180°;
  • the adjustment and setting of the gap between the roller surfaces of the three groups of applicator rollers of each dipping unit module are realized;
  • the gap between the adjacent two groups of dipping applicator roller surfaces, or the gap between the bottom applicator roller of the same inverted structure dipping unit module and the adjacent two groups of applicator roller surfaces is set in the range of 0.1 to 15mm;
  • the adjustment of the center distance of the rollers and the setting of the gap between the dipping and coating rollers of the unit module can obtain the proper fiber tension required for the effective fusion of a row of unidirectional, continuous and evenly flat fibers with the hot-melt resin, as well as the fusion of the hot-melt resin. pressure between tightly packed bundles of fibers;
  • the hot-melt resin coating guide roller and each group of rollers constituting the impregnation unit modules at all levels are provided with built-in heating structures;
  • the built-in heating can be a tubular electric heating element inserted into the inner cavity of the roller; or a liquid heating medium passing through the built-in channel of the roller ;
  • hot oil is used as the heating medium, and the shaft head end on the transmission side is connected with the external heat source through the rotary joint device;
  • each dipping and smearing unit module the shaft head rotating support pair at both ends of the applicator roller at the top of the genuine character or the bottom of the inverted character are respectively connected with the linear moving transmission pair that can move linearly, so as to realize the realization of each character unit module.
  • the upper and lower parts of the open continuous fiber and hot-melt resin roll impregnation device composed of the series-arranged character structure impregnation and coating unit modules can be respectively provided with multiple sets of radiant heating devices to provide heat.
  • the beam splitting, integration, and cooling and shaping mold cavity device adopts at least one group of mold cavity units that integrate beam splitting, integration, and cooling and shaping.
  • the adjacent continuous sheet-type unidirectional fiber reinforced resin body sub-units are also arranged in a corresponding staggered arrangement in the height direction;
  • a row of continuous fibers and the hot-melt resin fusion unit body are uniformly separated along its width direction, and at least one sheet-type unidirectional fiber-reinforced resin body subunit is separated;
  • a group of longitudinally separated and shaped cooling cavity units is composed of a pair of rollers whose surfaces are concave and convex; wherein, the rollers have a built-in cooling water flow channel; and are connected with a temperature-adjustable cold water system;
  • the split-bundle mold cavity divides the continuous fiber unit fused with the hot-melt resin into at least one group of unit bundles effectively fused with the hot-melt resin along its width direction; wherein, the split-bundle mold cavity, along the The cross-sectional size in the length direction is continuously decreasing;
  • the beam splitting cavity is open
  • At least one group of unit bundles fused with continuous fibers and hot-melt resin respectively pass through the integrated mold cavity at the corresponding position, and carry out the regular cross-section pressing and shaping of the unidirectional fiber reinforced resin body; wherein, the integrated mold cavity is formed along its length.
  • the cross-sectional dimension of the direction is a continuously decreasing geometric cylinder; the integrated mold cavity is provided with at least one set of raised steps along its length to enhance the thermal compression of the unit bundle fused with the continuous fiber and the hot-melt resin; cooling and shaping
  • the mold cavity fuses at least one group of integrated continuous fibers and hot-melt resin units, respectively, through cooling and shaping mold cavities with built-in cooling water channels, and further pressing, cooling and shaping the unidirectional fiber reinforced resin unit bundles;
  • the beam splitting and integrated cavity devices are respectively provided with heat source devices with adjustable temperature; wherein, the heat source of the heat source device includes an electric heating tube or a liquid heat transfer medium; the cooling and shaping mold cavity has a built-in cooling water flow channel, and Connected to a temperature-adjustable chiller.
  • a flattening device which forms a row of continuous fiber bodies composed of multiple bundles of fiber bundles to form tension on the fiber bundles at a set wrapping angle, and is in contact with the geometric curved surface of the yarn passing member to achieve alignment.
  • Multiple bundles of continuous fiber bodies are regularly and uniformly flattened along its width direction; wherein, the back of the yarn passing member is provided with a reinforcing structure; the built-in jacking member of the back reinforcing structure is used to adjust the vertical direction of the yarn passing member along its geometric generatrix.
  • the arching degree and fix it; the arching degree of the yarn passing member along the vertical direction of its geometric generatrix, or the setting value range of the mysterious height based on the process center line of the production line preparation equipment is 0.05 ⁇ 5.0mm; the back structure reinforcement parts, At least two sets of jacking mechanisms are provided; the jacking mechanism is supported by the reinforcing member to adjust the arching degree of the geometric curved surface of the yarn passing member; at the same time, the yarn passing member is connected and fixed with the reinforcing member; the yarn passing member Appropriate cross-sectional geometry of the area in contact with a row of continuous fibers consisting of multiple bundles of fibers in an angle-wrapped manner, including semicircular, partial arc, full circle or SIGN curve; the yarn passing member is provided with built-in heating elements
  • the built-in heating element can be a tubular electric heating element inserted into the inner cavity of the yarn passing member; or use a liquid heating medium to heat through the channel provided by the yarn passing member;
  • the flattening device is composed of three groups of components; wherein, two groups are yarn passing members with fixed positions, and a group of yarn passing members whose positions are adjustable, and are arranged according to a V-shaped structure; wherein, by adjusting the V-shaped structure The position of the yarn-passing flattening member at the bottom, changing the center distance between the three groups of members, and changing the wrap angle between the fiber body and the working unit member and the tension of the fiber body;
  • an electrification device that uses a friction member made of a material different from the fiber body to generate the same charge on the friction of the fiber body; wherein, the friction member material includes a metal material of copper, steel or aluminum alloy, or a ceramic , nylon or hard rubber non-metallic materials;
  • the friction member performs repeated contact friction motions on the surface of a row of unidirectionally continuously flattened fiber filaments through the actuator; through the frictional motion, identical filaments are generated between each fiber filaments in a row of unidirectionally continuously flattened fiber filaments.
  • the repulsive force between the charges further implements the uniform flattening of a row of unidirectional continuous filaments;
  • the geometric structure of the head of the friction member in contact with the surface of a row of unidirectionally continuously flattened filaments includes a sphere, a hemisphere, a spheroid, a cylinder, a semi-cylinder, a small semi-cylinder, or a continuous three-dimensional geometric surface. , or a continuous two-dimensional geometric surface;
  • the actuator for driving the friction member unit includes a driving element powered by electric, pneumatic or hydraulic power.
  • the present invention also provides a method for preparing a unidirectional fiber reinforced resin body with regular cross-section, which comprises the following steps:
  • S3 a group of extrusion equipment dies coats the extruded hot-melt resin on the surface of the hot-melt resin smear guide roller by smearing to form a hot-melt resin film layer with a uniform thickness;
  • S5 A row of unidirectional continuous and uniformly flattened fibers initially fused with the hot-melt resin enters a multi-stage serial, parallel-interactive, open continuous fiber and hot-melt resin roll impregnation device to realize the integration of the hot-melt resin and the fiber. effective integration;
  • the present invention also provides a method for preparing a fixed-length, sheet-type high-fiber-content unidirectional fiber-reinforced resin body, comprising the following steps:
  • S3 a group of extrusion equipment dies coats the extruded hot-melt resin on the surface of the hot-melt resin smear guide roller by smearing to form a hot-melt resin film layer with a uniform thickness;
  • S5 A row of unidirectional continuous and uniformly flattened fibers initially fused with the hot-melt resin enters a multi-stage serial, parallel-interactive, open continuous fiber and hot-melt resin roll impregnation device to realize the integration of the hot-melt resin and the fiber. effective integration;
  • a row of unidirectional continuous and evenly flattened fiber bodies is driven by the main traction, and continuously passes through at least one set of longitudinal separation and shaping cooling devices, and the row of continuous fibers and the hot-melt resin are continuously separated.
  • the resin fusion unit is evenly separated along its width direction; after that, it is cut by a cross-cutting device according to a set length to make a sheet-type unidirectional fiber reinforced resin body of fixed length.
  • the effect achieved by the present invention is: to produce a unidirectional fiber reinforced resin body with a regular cross-section and a fixed length with high fiber content.
  • Fig. 1 is an embodiment of the present invention using a hot melt resin extrusion die head arranged on both sides and a hot melt resin coating guide roller and a multi-stage serial, parallel alternating, open continuous fiber and hot melt resin roll impregnation coating Schematic diagram of the structure of the device combination;
  • Figure 1a is a schematic structural diagram of a set of hot-melt resin extrusion dies and hot-melt resin coating guide rollers arranged on one side according to an embodiment of the present invention
  • Fig. 1b is a schematic structural diagram of a hot-melt resin extrusion die head arranged on the top and bottom according to an embodiment of the present invention, and a hot-melt resin coating guide roller is provided on the lower part;
  • 1c is a schematic structural diagram of a hot-melt resin extrusion die head arranged on the top and bottom according to an embodiment of the present invention, and a hot-melt resin coating guide roller is provided on the upper part;
  • FIG. 2 is a schematic structural diagram of a module roller of a genuine character structure impregnating unit according to an embodiment of the present invention
  • Fig. 3 is the structural schematic diagram of the dipping unit module roller of the inverted character structure according to the embodiment of the present invention.
  • FIG. 4 is a schematic diagram of the layout of a production process preparation equipment for a unidirectional continuous fiber reinforced resin composite material according to an embodiment of the present invention
  • FIG. 5 is a splitting, integration, cooling and shaping device for making a sheet-type fiber-reinforced resin body according to an embodiment of the present invention
  • FIG. 6 is a beam-splitting, integration and cooling and shaping device for making a fiber-reinforced resin body with a regular cross-section according to an embodiment of the present invention
  • FIG. 7 is a front view of a group of flattening unit modules according to an embodiment of the present invention.
  • FIG. 8 is a side view of a group of flattening unit modules according to an embodiment of the present invention.
  • Fig. 9 is the front view of the friction fiber electrification device of the embodiment of the present invention.
  • FIG. 10 is a top view of the friction fiber electrification device according to the embodiment of the present invention.
  • Fig. 11 is a force analysis diagram of the tension change before and after the fiber passes through the flattening roller according to the embodiment of the present invention
  • a row of continuous fibers composed of multiple bundles of fiber bundles 2. flattening unit, 21, the first group of flattening unit modules, 22, the second group of flattening unit modules, 23, the third group of flattening units Module, 24, yarn passing member, 25, back structure reinforcing member, 26, jacking mechanism, 3, die head for extruding molten resin, 31, die head for extruding molten resin set at the lower part of continuous fiber, 4, heat Molten resin coating guide roller, 41. Hot melt resin coating guide roller arranged at the lower part of the continuous fiber, 5. Genuine character structure impregnation unit module, 6. Inverted character structure impregnation unit module, 7.
  • Cooling device 80, yarn unwinding frame , 81, carding frame, 82, oven, 83, friction fiber electrification device, 83-1, friction member, 83-2, reciprocating motion mechanism, 84, beam split cavity, 84-1, heating of split beam cavity Channel, 85, Heat Insulation Structure, 86, Integrated Mold Cavity, 86-1, Heating Channel for Integrated Mold Cavity, 87, Cooling Mold Cavity, 87-1, Cooling Channel for Cooling Mold Cavity, 88, Crawler Traction Mechanism, 88-1, Opposing Roller Traction Mechanism, 89, Transverse Cutting Mechanism, 90, Longitudinal Separation and Forming Cooling Device, 90-1, Roller whose surface is concave and convex.
  • multiple rolls of continuous fibers are loaded on the yarn release frame 80, and then each fiber is pulled to the carding frame 81 to form a row of continuous fibers 1 composed of multiple fiber bundles, and then pass through the first
  • the flattening unit module 21 is set, and the fibers are preliminarily expanded and the level of each yarn is limited to the same level, and then a row of continuous fibers 1 composed of multiple fiber bundles passes through the oven 82, and the fiber surface is used for bonding the fiber bundles.
  • Part of the sizing agent is baked off, which is conducive to further yarn spreading.
  • the continuous fiber 1 After the continuous fiber 1 comes out of the oven 82, it enters the second group of flattening unit modules 22, and then to the friction fiber electrification device 83, and then to the third group of flattening units. Module 23, at this time, the continuous fiber 1 has been unfolded to a perfect state without visible gaps to the naked eye, and is ready for the next step of infiltration process with resin;
  • thermoplastic resin After the thermoplastic resin is heated by the extruder and extruded through the die 3 for extruding the molten resin, it becomes a waterfall-like layer of film and is showered on the hot-melt resin coating guide roller 4, and the continuous fiber 1 passes through the guide roller 4 and contacts with it. And there is a certain wrapping angle, which is combined with the uniform resin on the smear guide roller, and then passes through the multi-level parallel interaction composed of the genuine character structure impregnation unit module 5 and the inverted character structure impregnation unit module 6, and the open type is arranged in series.
  • the continuous fiber and the hot-melt resin are rolled and impregnated to obtain a molten product in which the fiber and the resin are fully fused, and then pass through the beam-splitting cavity 84, and are evenly divided into at least one bundle of the continuous fiber and the hot-melt resin.
  • the subunits fused; Then, by integrating 86 and cooling and shaping 87 modular unit devices, at least one bundle of the continuous fiber and hot-melt resin fusion sub-units is made; after that, after passing through the pulling device 88, a cross-cutting device 89 is used, according to the set length. Cut to make the unidirectional fiber reinforced resin body with regular cross section and fixed length with high fiber content.
  • the continuous fiber adopts the 2400TEX untwisted continuous fiber with the brand name of 362CYF from Jushi Group, the main material of the resin is polypropylene material (PP), the melting index is 50-110g/10min, and the main material polypropylene 10 is added.
  • the main material of the resin is polypropylene material (PP)
  • the melting index is 50-110g/10min
  • the main material polypropylene 10 is added.
  • the continuous fiber materials described herein include but are not limited to those stated herein, such as glass fiber, carbon fiber, aramid fiber, etc.; fiber-reinforced thermoplastic resins that are compatible with it include but are not limited to those stated herein, such as Polypropylene resin PP, polyethylene resin PE, polyester resin PET, nylon resin PA6 or PA66, PC resin, PEEK resin, PPS resin, etc.
  • the corresponding related additives include but are not limited to other antioxidants , UV absorbers, light stabilizers, lubricant additives, etc.
  • each roll of fiber on the yarn unwinding rack 80 is equipped with a tension control device, which can adjust the tension of a single roll of fibers individually, and can also realize the adjustment of the overall tension.
  • a tension control device which can adjust the tension of a single roll of fibers individually, and can also realize the adjustment of the overall tension.
  • the carding frame 81 is a device similar to a comb, each fiber passes through a slit, and the position of each fiber in the width direction after the fibers drawn from the yarn release frame pass through the carding frame 81 is fixed, so that multiple bundles of fibers form a row of uniform and ordered continuous fibers 1;
  • each module consists of three sets of yarn passing members 24 that are in contact with the continuous fibers and generate a certain wrap angle and its corresponding back reinforcement structural member 25, wherein, the yarn passing member is provided with a built-in heating structure, and the heating structure adopts electric heating as the heating element, and the setting temperature is 80-110 ° C; Lifting mechanism 26; these jacking mechanisms 26 can realize the function of adjusting the degree of arching of the yarn passing member 24 with the reinforcing member 25 as the support, and at the same time, play the role of connecting and fixing the yarn passing member 24 and the reinforcing member 25.
  • the degree of arching that is, the distance between the roller surface at the middle position of the yarn passing member after the arching is adjusted to the reinforcing structure member is adjusted to 1mm;
  • the moving yarn passing members 24 are arranged in a V-shaped structure, and the center distance between the three groups of members can be adjusted through the movement of the movable yarn passing members 24, thereby changing the wrapping angle between the passing fibers and the working unit members.
  • adjust the tension of the fiber the principle of adjusting the tension and the size of the adjustment are calculated as follows:
  • the force analysis diagram of the tension change of the fiber before and after the flattening roller regards the contact part between the fiber and the roller as a point (the intersection of the X axis and the Y axis in the figure), and analyzes its mechanical properties:
  • the tension F 1 in the direction of the roll, the tension F 2 after the roll, the supporting force F N of the roll to the fiber, and the friction force F f of the roll to the fiber, the direction of which is shown in the figure above, defines the wrapping angle of the fiber on the roll.
  • Half is ⁇ , the angle shown by the 30° angle in the figure.
  • the tension of the fiber will increase by about two times each time it passes through a set of flattening unit modules. After 3 sets, the tension will nearly reach 8 times that before passing through the flattening unit module, which conforms to the principle of gradual unfolding, and The same applies to the subsequent smearing process consisting of multi-group character structure impregnation unit modules. With the gradual increase of tension, the wettability of fibers and resins is gradually improved.
  • the oven 82 adopts an infrared heating method, which is composed of multiple groups of ceramic infrared heaters, with a total length of about 1 m, and a width greater than the total width of the fibers after unfolding.
  • the distance from the fiber surface is 1-10 cm.
  • the temperature is up to 490°C.
  • a friction fiber electrification device 83 is arranged between the second group of flattening unit modules 22 and the third group of flattening unit modules 23, which is composed of a friction member 88 and a reciprocating mechanism 89;
  • a copper block is used, and the copper block reciprocates and rubs on the surface of a row of unidirectionally continuously flattened fiber filaments; the design principle is that, through friction, a row of unidirectionally continuously flattened fiber filaments 1 have the same charge to obtain The repulsive force between adjacent filaments is generated between the same charge, which improves the uniformity of the flattened filaments; 1/4 spherical shape of the pointed shape.
  • the driving method of the reciprocating mechanism is driven by a motor.
  • the set temperature of the extruder from the screw part to the melt pump to the connecting area part connected to the die and finally to the extrusion die 3 part is 190°C to 270°C. With the increase of temperature, the melt flow rate of the resin will increase.
  • the increase of the melt flow rate is beneficial to the degree of infiltration of fibers and resins, but too high temperature will cause the resin to turn yellow, decompose and age, etc., so it is necessary to find A suitable temperature selection range, of course, the different selection of materials, the temperature setting range also needs to be changed, for example, PA or PC materials with a higher melting point cannot be set to a temperature as low as 190 °C, and the extrusion equipment die head to The extruded hot-melt resin is coated on the roller surface of the hot-melt resin coating guide roller 4 by the coating method to form a hot-melt resin film layer with uniform thickness; then the hot-melt resin coating guide roller 4 moves through its rotation to synchronize The uniform resin film layer is coated on a row of unidirectional continuous uniformly flattened fibers 1, wherein the rotational movement of the hot-melt resin coating guide roller 4 is controlled by a separate motor, and its rotational speed is set to make the roller surface rotate.
  • the linear speed is lower than the running speed of the fiber.
  • the roller surface linear speed of the hot-melt resin coating guide roller 4 is set to 6 to 10 m/min, and the running speed of the fiber, that is, the pulling speed, is set to 15 to 25 m/min.
  • the hot-melt resin coating guide roller 4 is connected with a heating device.
  • the heat-conducting oil is used for heating.
  • the heat-conducting oil is controlled by an oil temperature machine, and the temperature is set to 200-250°C. The applicable range is different, and the set temperature needs to be adjusted according to the material.
  • a row of unidirectional, continuous and evenly flattened fibers initially fused with the hot-melt resin after passing through the hot-melt resin coating guide roller 4 enters the impregnating unit module 5 with the genuine character structure and the impregnating unit module with the inverted character structure. 6.
  • the smear guide roller also has a motor to control the speed. In this example, the linear speed of the roller surface is set to 10 ⁇ 15m/min, and there is a heating method.
  • the method of heating the heat transfer oil is selected.
  • the temperature is set to 200 ⁇ 250°C.
  • the temperature range is different. The temperature needs to be adjusted according to the material. Refer to the fiber in the fiber unwinding unit module before and after the roller with a certain wrap angle to the fiber. It can be concluded that the tension of the continuous fiber 1 is gradually increased and the wettability is gradually improved when the continuous fiber 1 passes through the multi-stage parallel interaction, the open continuous fiber arranged in series and the hot-melt resin roll impregnation device.
  • a row of unidirectional, continuous and evenly flattened fibers 1 passes through the longitudinal separation, shaping and cooling device 90, and is separated into several
  • the continuous fiber reinforced resin body in sheet form is then passed through the pulling 88-1 and the cross-cutting device 89 after pulling to make the final product: a sheet type, fixed-length unidirectional fiber reinforced resin body with high fiber content.
  • a row of continuous fibers 1 with good spread and uniformity interacts with the thermoplastic molten resin extruded by the extruder through the hot-melt resin coating guide roller 4 and multi-stage parallel, and the open continuous fibers arranged in series are connected with the hot-melt resin.
  • the longitudinal separation and shaping cooling device 90 which is composed of multiple groups of surfaces with concave and convex surfaces.
  • the coupled rollers 90-1 are combined to uniformly separate the row of continuous fibers and the hot-melt resin fusion unit along its width direction; separate at least one of the sheet-type unidirectional fiber-reinforced resin subunits , and finally the final product is obtained by means of the pressing roller-type pulling device 88-1 and the transverse cutting device 89: a piece of the sheet-type unidirectional fiber-reinforced resin body
  • carbon fiber is used for the continuous fiber
  • PA66 is used for the resin
  • the temperature of the extruder from the screw to the extrusion die is set at 240-310°C
  • the hot-melt resin coating guide roller 4 and the multi-stage parallel interaction and the opening of the series arrangement
  • the temperature of the continuous fiber and hot-melt resin rolling impregnation device is set to 260-300 ° C
  • the pulling speed is set to 10-15 m/min
  • the roller surface linear speed of the hot-melt resin coating guide roller 4 is set to 5-7 m/min
  • Multi-stage parallel interaction, open continuous fiber and hot-melt resin roll impregnation device arranged in series the roller surface speed is set to 7 ⁇ 10m/min
  • the roller surface speed of the non-pulling roller in contact with the continuous fiber before cooling The reason why it is set to be slower than the pulling speed, that is, the running speed of the fiber, is because if it is set to be the same as the pulling speed or even faster than the pulling speed, the broken hair
  • the roller surface and the fiber move relatively, so even if the hairiness is wrapped around the roller surface for a moment, the continuous fiber is very The hairiness can be taken away quickly, so that it will not become more and more entangled.
  • Example 1 As shown in Fig. 1a, the difference from Example 1 is that a hot-melt resin extrusion die 3 and a hot-melt resin coating guide roller 4 are only set above a row of unidirectionally continuously and uniformly flattened fibers 1, and are guided by hot-melt resin coating The rotational movement of the rollers 4 spreads the hot melt resin onto the continuous fibers 1 .
  • a second hot-melt resin extrusion die 31 is arranged below a row of unidirectionally continuous and uniformly flattened fibers 1, and the upper hot-melt resin extrusion die is 3. Apply the hot-melt resin evenly on the continuous fibers, and the lower hot-melt resin extrusion die 31 evenly spreads the hot-melt resin on the hot-melt resin coating guide roller 4, and applies the hot-melt resin to the guide roller 4 through the hot melt resin. The rotational motion spreads the hot melt resin onto the continuous fibers.
  • a second hot melt resin extrusion die 31 is provided below a row of unidirectionally continuous and uniformly flattened fibers 1, and the upper hot melt resin extrusion die
  • the head 3 evenly spreads the hot-melt resin on the hot-melt resin coating guide roller 4, and spreads the hot-melt resin on the continuous fiber through the rotating motion of the hot-melt resin coating guide roller 4, and the hot-melt resin extrusion die head below 31. Evenly spread the hot-melt resin on the continuous fiber 1.
  • the integrated and cooling sizing device wherein the cross-sectional dimension of the mold cavity of the beam splitting device 84 along its length direction is continuously decreasing and open, and a heat source device 84-1 is arranged in the device, and the integrated mold cavity is along its length.
  • the size of the cross-section in the direction is also continuously decreasing, and the cross-section is closed, and at least one set of raised steps is arranged along its length direction to enhance the heat to the unit bundles fused with the continuous fibers and the hot-melt resin. Pressed together, and a heat source device 86-1 is arranged therein, and a cooling water channel 87-1 is built into the cooling and shaping die cavity.
  • the produced unidirectional fiber-reinforced resin body with a regular cross-section and high fiber content passes through a pulling device 88 and a cross-cutting device 89 to make the final product: a regular cross-section, fixed-length high-fiber reinforced resin body. Fiber content Unidirectional fiber reinforced resin body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

L'invention concerne un procédé et un appareil de préparation d'un corps, de section transversale régulière, en résine renforcée par une fibre unidirectionnelle. Une tête de filière (3) d'extrusion d'une résine fondue extrude une résine thermoplastique quii forme une couche mince en forme de cascade et est versée sur un rouleau de guidage d'application de résine thermofusible (4). Une fibre continue (1) passe le long du rouleau de guidage d'application de résine thermofusible (4), se combine à la résine uniforme sur le rouleau de guidage d'application de résine thermofusible (4), passe à travers de multiples étages d'appareils, à extrémité ouverte, d'imprégnation et de laminage de résine thermofusible et de fibre continue, qui sont disposés en parallèle et reliés en série, puis passe à travers une cavité de moule de séparation (84), une cavité de moule de formation de faisceau (86) et une cavité de moule de refroidissement - mise en forme (87) pour former au moins un faisceau de sous-unité de fusion de la fibre continue et de la résine thermofusible.
PCT/CN2020/104978 2020-07-10 2020-07-27 Procédé et appareil de préparation d'un corps, de section transversale régulière, en résine renforcée par une fibre unidirectionnelle WO2022007038A1 (fr)

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Families Citing this family (2)

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Publication number Priority date Publication date Assignee Title
EP3964339B1 (fr) * 2020-07-10 2024-01-03 Jiangsu Qiyi Technology Co., Ltd Procédé et dispositif de préparation d'un matériau composite thermoplastique renforcé par des fibres continues unidirectionnelles
CN115871187B (zh) * 2023-02-23 2023-06-13 山东中水管道工程有限公司 一种用于对复合管材进行周向包覆纤维和塑料的生产线

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104669647A (zh) * 2015-02-11 2015-06-03 江苏奇一科技有限公司 增厚型连续纤维热塑性预浸带的制备设备及其制备方法
CN104827645A (zh) * 2015-05-19 2015-08-12 江苏奇一科技有限公司 连续纤维预制带的生产设备
CN205631423U (zh) * 2016-04-08 2016-10-12 中国商用飞机有限责任公司 用于制备复合材料预浸料捻子条的工艺设备
CN106827588A (zh) * 2017-03-02 2017-06-13 江苏奇科技有限公司 连续纤维热塑性预浸带的多级平行交互涂抹生产线
CN109822778A (zh) * 2019-02-27 2019-05-31 南京特塑复合材料有限公司 一种连续纤维纵横浸渍制备热塑性复合材料的成型方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61135712A (ja) * 1984-12-07 1986-06-23 Mitsubishi Rayon Co Ltd 織布で補強された一方向引揃え繊維強化プリプレグシ−トの製法
US4900118A (en) * 1987-05-22 1990-02-13 Furukawa Electric Co., Ltd. Multiple-fiber optical component and method for manufacturing of the same
US5062713A (en) * 1989-09-06 1991-11-05 The Dow Company Method for determining the residence time distribution of a polymer extruder
JP2005163223A (ja) * 2003-12-03 2005-06-23 Toray Ind Inc 強化繊維束の開繊方法および開繊装置
CN101474868B (zh) * 2008-10-15 2011-02-02 上海杰事杰新材料股份有限公司 连续纤维增强热塑性树脂复合材料预浸带制备设备及应用
CN105619842A (zh) * 2014-10-31 2016-06-01 林世平 连续纤维增强热塑性预浸带的二合一浸渍生产法及其设备
CN106750952A (zh) * 2016-12-26 2017-05-31 浙江普利特新材料有限公司 一种基于电缆包覆法的麻长纤增强热塑性复合材料及其制备方法
EP3662000A1 (fr) * 2017-08-01 2020-06-10 SABIC Global Technologies B.V. Câble de fibres de carbone présentant une aptitude améliorée au traitement
CN108724525A (zh) * 2018-05-10 2018-11-02 武汉海威船舶与海洋工程科技有限公司 连续纤维增强热塑性复合材料单向预浸带制备设备和方法
CN110948912B (zh) * 2019-12-12 2021-09-28 国塑机械(上海)有限公司 一种热塑性连续碳纤维单向带的生产设备及生产工艺

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104669647A (zh) * 2015-02-11 2015-06-03 江苏奇一科技有限公司 增厚型连续纤维热塑性预浸带的制备设备及其制备方法
CN104827645A (zh) * 2015-05-19 2015-08-12 江苏奇一科技有限公司 连续纤维预制带的生产设备
CN205631423U (zh) * 2016-04-08 2016-10-12 中国商用飞机有限责任公司 用于制备复合材料预浸料捻子条的工艺设备
CN106827588A (zh) * 2017-03-02 2017-06-13 江苏奇科技有限公司 连续纤维热塑性预浸带的多级平行交互涂抹生产线
CN109822778A (zh) * 2019-02-27 2019-05-31 南京特塑复合材料有限公司 一种连续纤维纵横浸渍制备热塑性复合材料的成型方法

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