CN113733400B - Dry-process winding prepreg wire preparation equipment and preparation process thereof - Google Patents

Dry-process winding prepreg wire preparation equipment and preparation process thereof Download PDF

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Publication number
CN113733400B
CN113733400B CN202111050235.8A CN202111050235A CN113733400B CN 113733400 B CN113733400 B CN 113733400B CN 202111050235 A CN202111050235 A CN 202111050235A CN 113733400 B CN113733400 B CN 113733400B
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prepreg
winding
resin
dry
filaments
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CN113733400A (en
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谢富原
陈长胜
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Zhejiang Tuanyuan Composite Material Co ltd
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Zhejiang Tuanyuan Composite Material Co ltd
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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
    • B29B15/122—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex
    • B29B15/125—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length with a matrix in liquid form, e.g. as melt, solution or latex by dipping
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C08K7/04—Fibres or whiskers inorganic
    • C08K7/06—Elements
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
    • C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils

Abstract

The invention discloses dry winding prepreg wire preparation equipment and a preparation process thereof, wherein the dry winding prepreg wire preparation equipment comprises a vertical plate, a yarn rack rod is arranged on the surface, which is close to each other, of the vertical plate, a bottom plate is arranged at the bottom of the vertical plate, a water bath tank is arranged at the top of the bottom plate, a dipping tank is arranged in the water bath tank and is positioned at one side of the vertical plate, lifting adjusting rods which are arranged front and back are arranged on the side frame of the top of the dipping tank, supporting frames are arranged on the front side and the back side frame of the top of the dipping tank, a support is arranged at the top of the bottom plate and is positioned at one side of the dipping tank, and a detection platform is arranged at the top of the support. The method for preparing the prepreg is low in cost, high in production speed, free of solvent pollution and suitable for mass production.

Description

Dry-process winding prepreg wire preparation equipment and preparation process thereof
Technical Field
The invention relates to the technical field of prepreg filaments, in particular to dry winding prepreg filament preparation equipment and a preparation process thereof.
Background
The dry winding is directly formed by winding prepreg tapes/wires on a core mold, does not involve a gum dipping process, has the advantages of controllable resin content, high production efficiency, environmental friendliness and the like, and mainly comprises the following steps of: the solution impregnation method, the hot melt impregnation method and the powder process method, wherein the solvent is used in the preparation process of the solution impregnation method, and the solution impregnation method needs to be dried at high temperature and causes environmental pollution; the hot-melting impregnation method needs to separate the prepreg filaments by using the separation paper after the resin is hot-melted, and then the prepreg filaments are cut to form prepreg tapes, so that the process is complicated and the fibers are damaged; the powder process for preparing the resin powder particles has the obvious defects of high equipment requirement, high production cost and slower production rate, and is difficult to meet the requirement of mass production.
The existing prepreg silk manufacturing equipment and technology have the following defects:
1. the comparative document CN110450396a discloses a composite tube filament winding forming method, "comprising: sectional winding and forming the forming material through a supporting tool and a winding device; solidifying and forming the product after winding and forming; and processing the outline dimension of the product after the solidification and molding. Aiming at the fiber winding composite pipe with the overlength size, the invention provides a sectional winding forming method, adopts a multipoint supporting winding mode to reduce the suspension length, reduce the influence of dead weight and tension on deflection deformation of a product, ensure the rigidity and deflection deformation requirements of the product, realize the winding forming of the overlength barrel fiber and have good practicability;
2. the reference CN102135178A discloses a dry yarn winding forming method for a pressure vessel, "comprising the steps of: 1. outer surface treatment of the liner of the pressure container: uniformly coating the adhesive on the outer surface of the cleaned inner container of the pressure container; 2. winding and forming dry yarns: the outer surface of the liner of the pressure container is wound in a winding mode of alternately carrying out longitudinal winding and circumferential winding, and continuous transition between the longitudinal winding and the circumferential winding can be realized under the condition of not cutting off fibers; 3. the port of the dry yarn winding forming body is subjected to loosening prevention and bundling treatment; 4. spraying and forming the surface protective layer of the dry yarn winding formed body; 5. and (5) standing at room temperature for curing. The winding forming method has the advantages of reasonable design, simple and convenient operation, convenient control and good winding forming effect, and can effectively solve the various practical problems of complex forming process, longer production period, higher cost, no large-scale industrial production and the like existing in the traditional winding forming process because the links of a gum dipping process and a curing process are omitted;
3. the comparative document CN105058764a discloses a dry winding molding method of a carbon fiber composite material driveshaft tube, "the contaminants on the mold are cleaned by using acetone, and then the mold is heated after the mold release agent is uniformly coated on the entire mold; winding prepreg yarns with proper width on a die according to a certain line type under proper winding speed and winding tension to form a composite material layer; stopping heating, and winding a silica gel film or a PET film on the surface of the composite material layer after the die is cooled to a certain temperature; after the surface treatment is finished, the temperature is increased to 180 ℃ according to the heating rate of not higher than 3 ℃/min, the temperature is kept for a period of time, and finally, the cooling is carried out to room temperature, the demoulding and the cutting are carried out, and the transmission shaft tube is obtained. The carbon fiber or epoxy composite material transmission shaft tube is manufactured through dry winding forming, has higher specific strength and specific rigidity, excellent wet heat resistance, tg of 220 ℃ and good compactness, uniformity and dimensional accuracy, and the winding forming method fails to edit the boundary of the surfaces of unqualified and qualified prepreg filaments in the processing process, so that a comparison target is lost when the unqualified prepreg filaments are subsequently sheared off, excessive shearing of the prepreg filaments is easily caused, and waste of the prepreg filaments is caused;
4. the utility model discloses a contrast document CN212603545U discloses a be used for dry process winding preimpregnation reinforcing fiber bundle apparatus for producing, "including base, resin groove and motor, the equal welded connection in top both sides of base has the riser, and installs the fixed plate between the riser, the guide pulley is installed on the riser, the top of collecting box is provided with the hot-pressing wheel, and the right side of hot-pressing wheel is provided with first roller, the right side of bellows is provided with the winding shaft, the motor is installed in the rear side of fixed plate, and the output of motor is connected with the winding shaft, the bottom of collecting box is connected with the base through the fixture block. This a production device for dry winding preimpregnation reinforcing fiber bundle, the inside of resin groove is provided with first pinch roller, and the upper right side of first pinch roller is provided with hot pinch roller, can make the resin infiltrate the fiber bundle completely like this under the effect of first pinch roller, then further infiltrate through hot pinch roller, be convenient for accurate control resin content like this, improve the production efficiency of fiber bundle ", this production device is when processing preimpregnation silk, unable motorized adjustment preimpregnation silk resin glue solution infiltration content, leads to the quality of preimpregnation silk to be difficult to obtain guaranteeing, and easily causes solvent waste and pollution.
Disclosure of Invention
The invention aims to provide dry winding prepreg silk preparation equipment and a preparation process thereof, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the dry winding prepreg silk preparation equipment comprises a vertical plate, wherein a yarn hack lever is arranged on the surface of the vertical plate, which is close to each other, a bottom plate is arranged at the bottom of the vertical plate, and a water bath tank is arranged at the top of the bottom plate;
the inside of the water bath tank is provided with a gum dipping tank, the gum dipping tank is positioned on one side of the vertical plate, a front frame and a back frame of the top of the gum dipping tank are provided with lifting adjusting rods which are arranged front and back, the top of the bottom plate is provided with a bracket, the bracket is positioned on one side of the gum dipping tank, the top of the bracket is provided with a detection platform, the top of the bottom plate is provided with a winding motor, the winding motor is positioned on one side of the detection platform, the top of the bottom plate is provided with a sunk groove, and the groove is positioned in front of the winding motor;
the top surface of the detection platform is sequentially provided with a controller, a computer, a signal receiver and a radioactive source which are arranged front and back, and the computer is electrically connected with the signal receiver and the controller.
Preferably, the surface mounting that the lift adjustment pole is close to each other has the crosspiece, no. two stay cords are installed to the position behind the surface of crosspiece, no. two electronic tension meters are installed to the one end of stay cord, no. one stay cord is installed to the one end of electronic tension meters, and No. one the tail end of stay cord is connected with the surface of yarn hack lever.
Preferably, the output of rolling motor installs the round bar, the disc has been cup jointed on the surface of round bar, the rolling bar is installed to the surface mosaic of round bar, and the diameter of rolling bar is less than the diameter of disc, the gag lever post has all been encircleed to the surface top and the bottom position of rolling bar, and wherein two sets of the rubber rope loop has been cup jointed on the surface of gag lever post.
Preferably, the surface of the rubber rope ring is connected with a marking rope, an adhesive layer is arranged around the surface of the marking rope, and the outer surface of the adhesive layer is connected with release paper.
Preferably, the electric lifting rods are arranged on the inner top wall of the supporting frame, the embedded blocks are connected to the bottom ends of the electric lifting rods, the upper roller is arranged on the surface, close to each other, of the embedded blocks through a bearing disc, the pressure induction coil plate is arranged on the inner wall of the upper roller, and the pressure induction coil plate is electrically connected with the machine.
Preferably, a chute is arranged on the inner wall of the gum dipping tank, a lower roller is arranged on the inner wall of the gum dipping tank through a bearing, and the lower roller is positioned below the chute.
Preferably, the surface mounting that the riser is close to each other has branch, and branch and riser perpendicular arrangement, branch is located the top of yarn hack lever, the surface mounting that the branch is close to each other has the preimpregnation silk section of thick bamboo.
Preferably, the inside slidable mounting of recess has the slider, the internally mounted of slider has driving motor, yarn guide wheel pole is installed to driving motor's output, electric telescopic handle is installed to one side inner wall of recess, and electric telescopic handle's tail end and the surface connection of slider.
Preferably, the preparation process of the dry-process winding prepreg filaments comprises the following steps of:
s1, preparing a curing agent: preparing an imidazole modified curing agent by adopting bisphenol A type epoxide modified 2-methylimidazole;
s2, preparing resin glue solution, namely mixing epoxy resin and a curing agent to prepare the resin glue solution;
s3, fiber gum dipping: adding the resin glue solution into a glue dipping tank, and dipping the fibers through a roller after the fibers pass through the yarns;
s4, detecting the content of the resin: after the fiber is impregnated, detecting whether deviation exists between the resin content and a resin set value or not through a detection platform;
s5, winding the prepreg wires: the fiber after gum dipping is rolled by a rolling motor to be made into prepreg filaments;
s6, packaging: and packaging the prepreg filaments by adopting a plastic film, and preserving at a low temperature after packaging.
Preferably, the S1 is added with a dispersion stabilizer PVP and a solvent xylene, the dosage of the curing agent is as follows, 1000 parts of the dispersion stabilizer, 1000 parts of the solvent, 20-60 parts of bisphenol A epoxide and 40-80 parts of 2-methylimidazole, the bisphenol A epoxide and the 2-methylimidazole are subjected to heating treatment within the range of 110-130 ℃, and are stirred in the heating process, wherein the stirring rate is 300-500 r/p/m;
the epoxy resin in the S2 is E51 or E54 resin, and the dosage of the epoxy resin and the imidazole modified curing agent is as follows: 100 parts of epoxy resin, 10-40 parts of imidazole modified curing agent, wherein the reaction temperature of the epoxy resin and the imidazole modified curing agent is 30-50 ℃, and the stirring speed is 200-500 r/p/m in the reaction process;
the S3 fiber is carbon fiber/aramid fiber/asphalt-based fiber, tension is applied after the fiber is threaded, and the tension is 20-50N;
in the step S4, beta rays are adopted for online detection, the radioactive source is 14C, the resin content is calculated through intensity attenuation after the beta rays pass through the prepreg filaments, and the specific calculation method comprises the following steps:
Figure BDA0003252648350000051
x is the resin content; i 0 : the initial intensity of the beta rays; i m The intensity of beta rays after penetrating through the prepreg filaments; k is a constant, which is related to the width of the prepreg filaments, the linear density of the fibers and the type of the resin, and is checked by adopting damage detection before testing;
the viscosity of the prepared prepreg filaments at normal temperature is 6-10 Pa/S, and the viscosity of the prepreg filaments at 50 ℃ is 0.3-1 Pa/S;
the plastic film in the step S6 is polyethylene or polytetrafluoroethylene, the thickness of the film is 0.5-2 mm, and the low-temperature preservation temperature is minus 18 ℃ to minus 30 ℃.
Preferably, the roller in the step S3 consists of an upper roller and a lower roller, the lower roller is immersed into the resin glue solution, the position of the lower roller is fixed, the position of the upper roller is adjustable, and the content of the prepreg resin is regulated and controlled by the position of the upper roller;
the yarn guide wheel rod and the direction of the prepreg thread cylinder are mutually perpendicular, and in the prepreg thread preparation process, the yarn guide wheel rod reciprocates along the direction of the prepreg thread cylinder to finish the winding of the prepreg thread.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the detection platform, the radioactive source, the signal receiver and the computer are arranged, beta rays are emitted by the radioactive source, then the beta rays can be projected on the surface of the signal receiver after passing through the prepreg, then the intensity attenuation value of the beta rays after passing through the prepreg is calculated by the computer, so that the aim of online detection of the resin content of the prepreg is realized, when the resin content of the prepreg fails to reach the standard, a starting signal can be sent to the electric lifting rod by the controller, so that a corresponding reference signal is provided for adjusting the resin content of the prepreg by the equipment, the change of the resin content in the prepreg manufacturing process is monitored, the uniformity of the resin distribution on the prepreg is effectively improved, and the resin content can be strictly controlled within +/-0.3%.
2. According to the invention, the lifting adjusting rod, the first pull rope, the electronic tension meter, the second pull rope, the crosspiece and the yarn hack lever are arranged, the lifting adjusting rod is adjusted, a tightening effect is formed between the first pull rope connected with the crosspiece and the second pull rope connected with the yarn hack lever, and the tension is further adjusted by detecting the partial tension through the electronic tension meter.
3. According to the invention, the rubber rope loop, the marking rope, the bonding layer, the stripping paper and the winding rod are arranged, the marking rope can be sleeved on the surface of the limiting rod by utilizing the elasticity of the rubber rope loop, then the stripping paper on the surface of the marking rope is stripped at the boundary between the qualified part and the unqualified part of the prepreg wire, then the marking rope is bonded on the surface of the prepreg wire by utilizing the bonding layer, the marking effect is achieved, then the prepreg wire is directly wound and formed by adopting the winding rod, and then the prepreg wire is directly used for dry winding and forming without adopting a process of separating paper and fiber cutting, so that the winding speed and the fiber strength are effectively improved.
4. According to the invention, the supporting frame, the embedded block, the electric lifting rod, the upper roller, the pressure sensing coil plate and the controller are arranged, signals are sent to the electric lifting rod through the controller, the embedded block and the upper roller are driven to move downwards, the distance between the upper roller and the lower roller is adjusted, so that the wettability of the fiber and the resin is enhanced through extrusion when the resin is directly infiltrated with the fiber after being heated, the production rate of the equipment is improved, and the preparation process is low in cost and free of risk of solvent pollution.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the mounting structure at A of the present invention;
FIG. 3 is a schematic view of the mounting structure at B of the present invention;
FIG. 4 is a schematic diagram of the winding motor, winding rod and stop lever and marking rope mounting structure of the present invention;
FIG. 5 is a schematic view of the mounting structure of the stop lever, rubber rope loop and marker rope of the present invention;
FIG. 6 is a schematic view of the mounting structure of the dipping tank and the supporting frame of the invention;
FIG. 7 is a schematic view of the mounting structure of the upper roller and the pressure-sensing coil plate of the present invention;
fig. 8 is a schematic cross-sectional view of a marking rope according to the present invention.
In the figure: 1. a vertical plate; 101. a presoaking silk cylinder; 102. a yarn rack rod; 103. a support rod; 2. a gum dipping tank; 201. a chute; 202. a lower drum; 3. a detection platform; 301. a radiation source; 302. a signal receiver; 303. a computer; 304. a controller; 4. a groove; 401. a yarn guide wheel rod; 402. an electric telescopic rod; 5. a winding motor; 501. a disc; 502. a winding rod; 503. a limit rod; 6. a water bath tank; 7. a lifting adjusting rod; 701. a first pull rope; 702. an electronic tension meter; 703. a second pull rope; 704. a crosspiece; 8. a support frame; 801. a fitting block; 802. an electric lifting rod; 803. an upper roller; 804. a pressure sensing coil plate; 9. rubber rope loop; 901. marking a rope; 902. an adhesive layer; 903. and (5) stripping the paper.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 and 3, an embodiment of the present invention is provided: the dry winding prepreg silk preparation equipment comprises a vertical plate 1, wherein a yarn hack lever 102 is arranged on the surface, close to each other, of the vertical plate 1, a bottom plate is arranged at the bottom of the vertical plate 1, and a water bath tank 6 is arranged at the top of the bottom plate;
specifically, the contact area between the manufacturing equipment and the mounting surface can be increased through the bottom plate, so that the mounting stability of the manufacturing equipment is further improved, and the electric heating pipes are arranged in the water bath tank 6, so that the inside of the dipping tank 2 placed in the electric heating pipes can be subjected to water bath heating treatment, and further the uniform heating treatment of resin glue solution in the dipping tank 2 is ensured;
the support is installed at the top of bottom plate, and the support is located one side of gum dipping tank 2, testing platform 3 is installed at the top of support, controller 304, computer 303, signal receiver 302 and the radiation source 301 that the top surface of testing platform 3 arranged around installing in proper order, computer 303 and signal receiver 302 and controller 304 electric connection.
Specifically, the resin content is calculated through the intensity attenuation of the 14C beta rays emitted by the radiation source 301 after the presoaking, then the beta rays after the presoaking can be projected on the surface of the signal receiver 302, then the presoaking resin content is calculated through the computer 303 by calculating the beta ray intensity attenuation value after the presoaking, so that the purpose of on-line detection of the presoaking resin content is realized, and necessary technical support is provided for detecting whether the presoaking resin content is qualified or not;
when the content of the prepreg resin does not reach the standard, a starting signal can be sent to the electric lifting rod 802 through the controller 304, so that a corresponding reference signal is provided for the equipment to adjust the content of the prepreg resin.
Example two
Referring to fig. 2, an embodiment of the present invention is provided: the utility model provides a dry process winding preimpregnation silk preparation facilities, includes lift adjustment pole 7, lift adjustment pole 7 that arranges around the top one side frame of gum dipping tank 2 is installed, lift adjustment pole 7 is close to each other's surface mounting has crosspiece 704, no. two stay cords 703 are installed to the position behind the surface of crosspiece 704, no. two electron pulling force meter 702 is installed to No. two one ends of stay cords 703, no. one stay cord 701 is installed to one end of electron pulling force meter 702, and the tail end of No. one stay cord 701 is connected with the surface of yarn hack lever 102.
Specifically, when tension needs to be applied to the fiber after the fiber is threaded, the height of the lifting adjusting rod 7 can be adjusted, then the crosspiece 704 is driven to synchronously rise, a tightening effect is formed between the first pull rope 701 connected with the crosspiece 704 and the second pull rope 703 connected with the yarn hack lever 102, tension is generated, the tension between the first pull rope 701 and the second pull rope 703 can be detected through the electronic tension meter 702, and the height adjustment of the lifting adjusting rod 7 is stopped after the tension reaches 20-50N, so that the control of the tension adjustment force of the device is met.
Example III
Referring to fig. 4, 5 and 8, an embodiment of the present invention provides: the utility model provides a dry process winding preimpregnation silk preparation facilities, includes lift adjusting lever 7, winding motor 5 is installed at the top of bottom plate, and winding motor 5 is located one side of testing platform 3, the round bar is installed to winding motor 5's output, the disc 501 has been cup jointed on the surface of round bar, the winding pole 502 is installed to the surface mosaic of round bar, and the diameter of winding pole 502 is less than the diameter of disc 501, the gag lever post 503 has all been encircleed to winding pole 502's surface top and bottom position, and wherein two sets of rubber rope circle 9 has been cup jointed on the surface of gag lever post 503.
The surface of the rubber rope loop 9 is connected with a marking rope 901, an adhesive layer 902 is arranged around the surface of the marking rope 901, and the outer surface of the adhesive layer 902 is connected with a release paper 903.
Specifically, the winding rod 502 is sleeved on the surface of the round rod and is blocked by the disc 501, so that the winding rod 502 can synchronously rotate along with the round rod after the winding motor 5 is started, further guarantee is provided for smooth winding operation, and the limiting rod 503 is of a retractable and adjustable structure, so that a limiting structure can be formed, and the falling of prepreg filaments caused by overfull prepreg filaments on the surface of the winding rod 502 is avoided;
the rubber rope loop 9 has certain elasticity, can facilitate the staff to sleeve the rubber rope loop on the surface of the limiting rod 503, after the resin content of the prepreg wires is detected to be qualified, in order to ensure that the normal running of the winding work is not interrupted, the pre-tested prepreg wires can be marked for subsequent trimming, at the moment, the release paper 903 on the outermost layer of the marking rope 901 can be stripped, then the adhesive layer 902 on the surface of the marking rope 901 is exposed, and then the adhesive layer is adhered at the boundary between the qualified prepreg wires and the non-qualified prepreg wires, so that the marking effect is achieved, and the subsequent trimming is facilitated.
Example IV
Referring to fig. 6 and 7, an embodiment of the present invention is provided: the utility model provides a dry process winding preimpregnation silk preparation facilities, includes braced frame 8, braced frame 8 is all installed to the positive and back frame in top of impregnation groove 2, two sets of electric lift pole 802 is all installed to braced frame 8's interior roof, two sets of electric lift pole 802's bottom all is connected with gomphosis piece 801, two sets of the surface that gomphosis piece 801 is close to each other all installs upper roller 803 through the bearing dish, pressure induction coil board 804 is installed to upper roller 803's inner wall, and pressure induction coil board 804 and computer 303 electric connection.
The inside of water bath jar 6 has laid the gum dipping tank 2, and gum dipping tank 2 is located one side of riser 1, the inner wall of gum dipping tank 2 is equipped with spout 201, lower cylinder 202 is installed through the bearing to the inner wall of gum dipping tank 2, and lower cylinder 202 is located the below of spout 201.
Specifically, the embedded block 801 is connected with the chute 201 in an embedded manner, and the pressure-sensitive coil plate 804 is electrically connected with the computer 303, so that after the electric lifting rod 802 receives a starting signal sent by the controller 304, the electric lifting rod can extend downwards, and then the embedded block 801 is driven to slide downwards along the inner wall of the chute 201, so that the vertical distance between the upper roller 803 and the lower roller 202 is reduced, and then the prepreg passing between the upper roller 803 and the lower roller 202 is extruded, and the penetrating power of resin glue solution on the prepreg is enhanced, so that the resin content of the prepreg is improved, in the extrusion process, the extrusion acting force between the upper roller 803 and the lower roller 202 can be detected by the pressure-sensitive coil plate 804, and then the extrusion acting force between the upper roller 803 and the lower roller 202 is conveniently adjusted through the computer 303, so that the aim of adjusting the extrusion acting force is fulfilled, and the detection platform 3 is matched, and the production quality of the prepreg is ensured.
The surface mounting that riser 1 is close to each other has branch 103, and branch 103 and riser 1 vertical arrangement, branch 103 is located the top of yarn hack lever 102, the surface mounting that branch 103 is close to each other has prepreg silk section of thick bamboo 101.
The top of bottom plate is equipped with the recess 4 of invagination, and recess 4 is located the place ahead of rolling motor 5, the inside slidable mounting of recess 4 has the slider, the internally mounted of slider has driving motor, yarn guide wheel pole 401 is installed to driving motor's output, electric telescopic handle 402 is installed to the inner wall of one side of recess 4, and electric telescopic handle 402's tail end and slider's surface connection.
Specifically, the driving motor and the electric telescopic rod 402 are started to drive the yarn guide wheel rod 401 to reciprocate in the groove 4, and in the process, the driving motor drives the yarn guide wheel rod 401 to rotate, so that friction between the prepreg filaments and the surface of the yarn guide wheel rod 401 is reduced through rotation, and abrasion of the prepreg filaments is reduced;
when the yarn threading operation is performed on the prepreg yarns, the prepreg yarns can be wound on the surfaces of the prepreg yarn cylinder 101 and the yarn hack lever 102 in a staggered manner, so that the surface tensioning effect of the prepreg yarns is ensured.
Example five
A preparation process of dry-process winding prepreg filaments comprises the following working steps:
1) Preparing a curing agent: sequentially adding 100kg of dimethylbenzene, 100kg of dispersion stabilizer, 3kg of bisphenol A epoxide and 3kg of 2-methylimidazole into a reaction kettle, setting the heating temperature to 120 ℃ and stirring the mixture at the speed of 250r/p/m; and after the reddish brown product is crystallized and separated out, filtering and washing to obtain the modified curing agent.
2) Preparing resin glue solution: 50Kg of E54 epoxy resin and 5Kg of modified curing agent are weighed, the resin and the modified curing agent are mixed and stirred, the stirring speed is 300r/p/m, and the mixture is heated after being uniformly mixed, wherein the heating temperature is 40 ℃ and the heating time is 2 hours.
3) Fiber gum dipping: pouring 3Kg of resin glue solution into a glue tank, starting a water bath heating device, and setting the temperature to 50 ℃; carbon fibers are put into a creel, and after the fibers sequentially pass through the creel rod 102, the dipping tank 2, the detection platform 3 and the winding rod 502, the tension set value is 30N under the cooperation of the lifting adjusting rod 7;
4) And (3) detecting the content of resin: and (3) opening the devices such as the radioactive source 301, the signal receiver 302 and the computer 303, testing the resin content of the prepreg wires passing through the detection platform 3, checking the resin content of the prepreg wires by the detection platform 3, and opening the controller 304 and the supporting frame 8 after checking, wherein the resin content of the prepreg wires is controlled to be 32%. After the resin content is stable, starting a marking rope 901 to mark the prepreg filaments, and connecting the subsequent prepreg filaments into a winding rod 502;
5) And (3) winding the prepreg wires: after passing through the detection platform 3, the prepreg filaments are connected into a winding rod 502, and the yarn guide wheel rod 401 reciprocates along the direction of the prepreg filament cylinder 101 to finish winding the prepreg filaments;
6) And (3) packaging: and (3) packaging the prepreg filaments by adopting a polyethylene film, and preserving at a low temperature of-18 ℃ after packaging.
Through testing, the viscosity of the prepreg filaments at normal temperature is 7Pa/s, the viscosity of the prepreg filaments at 50 ℃ is 0.5Pa/s, the low-temperature shelf life is more than 1 year, and the normal-temperature service time is more than 1 month, so that the prepreg filaments are suitable for dry winding forming.
Example six
A preparation process of dry-process winding prepreg filaments comprises the following working steps:
1) Preparing a curing agent: sequentially adding 100kg of dimethylbenzene, 100kg of dispersion stabilizer, 2kg of bisphenol A epoxide and 4kg of 2-methylimidazole into a reaction kettle, setting the heating temperature to 110 ℃ and stirring the mixture at the speed of 300r/p/m; and after the reddish brown product is crystallized and separated out, filtering and washing to obtain the modified curing agent.
2) Preparing resin glue solution: 30Kg of E51 epoxy resin and 5Kg of modified curing agent are weighed, the resin and the modified curing agent are mixed and stirred, the stirring speed is 300r/p/m, and the mixture is heated after being uniformly mixed, wherein the heating temperature is 45 ℃ and the heating time is 3 hours.
3) Fiber gum dipping: pouring 3Kg of resin glue solution into a glue tank, starting a water bath heating device, and setting the temperature to 45 ℃; placing aramid fibers into a creel, and sequentially passing through a pre-dipping silk cylinder 101, a dipping tank 2, a detection platform 3 and a winding rod 502, wherein the tension set value is 25N under the cooperation of a lifting adjusting rod 7;
4) And (3) detecting the content of resin: the method comprises the steps of opening a radioactive source 301, a signal receiver 302, a computer 303 and other equipment, testing the resin content of the prepreg filaments passing through a detection platform 3, checking the resin content by the detection platform 3, opening a controller 304 and a supporting frame 8 after checking, controlling the resin content of the prepreg filaments to be 35%, starting a marking rope 901 after the resin content is stable, marking the prepreg filaments, and connecting the subsequent prepreg filaments to a winding rod 502;
5) And (3) winding the prepreg wires: after passing through the detection platform 3, the prepreg filaments are connected into a winding rod 502, and the yarn guide wheel rod 401 reciprocates along the direction of the prepreg filament cylinder 101 to finish winding the prepreg filaments;
6) And (3) packaging: and (3) packaging the prepreg filaments by adopting a polyethylene film, and preserving at a low temperature of-25 ℃ after packaging.
Through testing, the viscosity of the prepreg filaments at normal temperature is 8Pa/s, the viscosity of the prepreg filaments at 50 ℃ is 0.7Pa/s, the low-temperature shelf life is more than 1 year, the normal-temperature service time is more than 1.5 months, and the prepreg filaments are suitable for dry winding forming.
Working principle: s1, preparing a curing agent: preparing an imidazole modified curing agent by adopting bisphenol A type epoxide modified 2-methylimidazole;
s2, preparing resin glue solution: mixing epoxy resin and a curing agent to prepare resin glue solution;
s3, fiber gum dipping: adding the resin glue solution into a glue dipping tank 2, and dipping the fibers through a roller after the fibers pass through the yarns;
s4, detecting the content of the resin: after the fiber is impregnated, detecting whether deviation exists between the resin content and a resin set value or not through a detection platform 3;
s5, winding the prepreg wires: the fiber after gum dipping is rolled up by a rolling motor 5 to be made into prepreg filaments;
s6, packaging: and packaging the prepreg filaments by adopting a plastic film, and preserving at a low temperature after packaging.
The S1 is added with a dispersion stabilizer PVP and a solvent xylene, wherein the dosage of the curing agent is as follows, the dispersion stabilizer is 1000 parts, the solvent is 1000 parts, the bisphenol A type epoxide is 20-60 parts, the 2-methylimidazole is 40-80 parts, the bisphenol A type epoxide and the 2-methylimidazole are subjected to heating treatment within the range of 110-130 ℃, and are subjected to stirring treatment in the heating process, and the stirring rate is 300-500 r/p/m;
the epoxy resin in the S2 is E51 or E54 resin, and the dosage of the epoxy resin and the imidazole modified curing agent is as follows: 100 parts of epoxy resin, 10-40 parts of imidazole modified curing agent, wherein the reaction temperature of the epoxy resin and the imidazole modified curing agent is 30-50 ℃, and the stirring speed is 200-500 r/p/m in the reaction process;
the S3 fiber is carbon fiber/aramid fiber/asphalt-based fiber, tension is applied after the fiber is threaded, and the tension is 20-50N;
in the step S4, the β -ray is adopted for online detection, the radiation source 301 is 14C, and the resin content is calculated by the intensity attenuation of the β -ray after passing through the prepreg, and the specific calculation method is as follows:
Figure BDA0003252648350000131
x: resin content; i 0 : the initial intensity of the beta rays; i m : the intensity of beta rays after passing through the prepreg filaments;
k: constant, related to prepreg wire width, fiber linear density and resin type, checking by adopting damage detection before testing;
the viscosity of the prepared prepreg filaments at normal temperature is 6-10 Pa/S, and the viscosity of the prepreg filaments at 50 ℃ is 0.3-1 Pa/S;
the plastic film in the step S6 is polyethylene or polytetrafluoroethylene, the thickness of the film is 0.5-2 mm, and the low-temperature preservation temperature is minus 18 ℃ to minus 30 ℃.
The rollers in the step S3 are composed of an upper roller 803 and a lower roller 202, the lower roller 202 is immersed into the resin glue solution, the position of the lower roller 202 is fixed, the position of the upper roller 803 is adjustable, and the position is adjusted through the upper roller 803 to regulate and control the resin content of the prepreg filaments;
the yarn guide wheel rod 401 is perpendicular to the direction 101 of the prepreg wire tube, and in the preparation process of the prepreg wire, the yarn guide wheel rod 401 reciprocates along the direction 101 of the prepreg wire tube to finish the winding of the prepreg wire.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. The dry winding prepreg silk preparation equipment comprises a vertical plate (1), and is characterized in that: the surface of the vertical plate (1) which is close to each other is provided with a yarn hack lever (102), the bottom of the vertical plate (1) is provided with a bottom plate, and the top of the bottom plate is provided with a water bath tank (6);
the automatic lifting device is characterized in that a dipping tank (2) is arranged in the water bath tank (6), the dipping tank (2) is located on one side of the vertical plate (1), lifting adjusting rods (7) which are arranged front and back are arranged on a side frame on the top of the dipping tank (2), supporting frames (8) are arranged on the front side and the back side frame on the top of the dipping tank (2), electric lifting rods (802) are arranged on the inner top wall of each supporting frame (8), a support is arranged on the top of the bottom plate, the support is located on one side of the dipping tank (2), a detection platform (3) is arranged on the top of the support, a winding motor (5) is arranged on the top of the bottom plate, an inwards-sunk groove (4) is formed in the top of the bottom plate, and the groove (4) is located in front of the winding motor (5);
the top surface of the detection platform (3) is sequentially provided with a controller (304), a computer (303), a signal receiver (302) and a radioactive source (301), wherein the controller (304), the computer (303) is electrically connected with the signal receiver (302) and the controller (304);
beta rays are emitted by the radiation source (301), the beta rays can be projected on the surface of the signal receiver (302) after passing through the prepreg wires, the intensity attenuation value of the beta rays after passing through the prepreg wires is calculated by the computer (303), the resin content of the prepreg wires is calculated, the purpose of online detection of the resin content of the prepreg wires is further achieved, and when the resin content of the prepreg wires does not reach the standard, a starting signal can be sent to the electric lifting rod (802) by the controller (304);
the method adopts beta rays to carry out on-line detection, the radioactive source is 14C, the resin content is calculated through the intensity attenuation of the beta rays after passing through the prepreg filaments, and the specific calculation method comprises the following steps:
Figure FDA0004067590840000011
x is the resin content; i 0 : the initial intensity of the beta rays; i m : the intensity of beta rays after passing through the prepreg filaments; k is a constant, which is related to the width of the prepreg filaments, the linear density of the fibers and the type of the resin, and is checked by adopting damage detection before testing;
the surface mounting that lift adjustment pole (7) are close to each other has crosspiece (704), no. two stay cords (703) are installed to the position behind the surface of crosspiece (704), electronic tensiometer (702) are installed to the one end of No. two stay cords (703), no. one stay cord (701) is installed to the one end of electronic tensiometer (702), and the tail end of No. one stay cord (701) is connected with the surface of yarn hack lever (102).
2. A dry-wound prepreg wire manufacturing apparatus as recited in claim 1 wherein: the winding motor is characterized in that a round rod is arranged at the output end of the winding motor (5), a disc (501) is sleeved on the surface of the round rod, a winding rod (502) is mounted on the surface of the disc (501) in a jogged mode, the diameter of the winding rod (502) is smaller than that of the disc (501), limiting rods (503) are arranged at the top and bottom of the surface of the winding rod (502) in a surrounding mode, and rubber rope rings (9) are sleeved on the surfaces of the limiting rods (503) in two groups.
3. A dry-wound prepreg wire manufacturing apparatus according to claim 2, wherein: the surface of rubber rope circle (9) is connected with mark rope (901), adhesive linkage (902) are installed around the surface of mark rope (901), the surface of adhesive linkage (902) is connected with release paper (903).
4. A dry-wound prepreg wire manufacturing apparatus as recited in claim 1 wherein: the bottom of two sets of electric lifting rods (802) is connected with a jogging block (801), the surfaces of the two sets of jogging blocks (801) which are close to each other are provided with an upper roller (803) through a bearing disc, the inner wall of the upper roller (803) is provided with a pressure induction coil plate (804), and the pressure induction coil plate (804) is electrically connected with a computer (303).
5. A dry-wound prepreg wire manufacturing apparatus as recited in claim 1 wherein: the inner wall of the gum dipping tank (2) is provided with a chute (201), the inner wall of the gum dipping tank (2) is provided with a lower roller (202) through a bearing, and the lower roller (202) is positioned below the chute (201).
6. A dry-wound prepreg wire manufacturing apparatus as recited in claim 1 wherein: the surface mounting that riser (1) is close to each other has branch (103), and branch (103) and riser (1) perpendicular arrangement, branch (103) are located the top of yarn hack lever (102), the surface mounting that branch (103) are close to each other has prepreg silk section of thick bamboo (101).
7. The dry-wound prepreg wire manufacturing apparatus of claim 6 wherein: a sliding block is slidably arranged in the groove (4), a driving motor is arranged in the sliding block, a yarn guide wheel rod (401) is arranged at the output end of the driving motor, an electric telescopic rod (402) is arranged on the inner wall of one side of the groove (4), and the tail end of the electric telescopic rod (402) is connected with the surface of the sliding block;
the yarn guide wheel rod (401) is perpendicular to the direction (101) of the prepreg wire tube, and in the preparation process of the prepreg wire, the yarn guide wheel rod (401) moves back and forth along the direction (101) of the prepreg wire tube, so that the winding of the prepreg wire is completed.
8. A dry-process winding prepreg wire manufacturing process, characterized in that the dry-process winding prepreg wire manufacturing apparatus according to any one of claims 1 to 7, comprises the steps of:
s1, preparing a curing agent: preparing an imidazole modified curing agent by adopting bisphenol A type epoxide modified 2-methylimidazole;
s2, preparing resin glue solution, namely mixing epoxy resin and a curing agent to prepare the resin glue solution;
s3, fiber gum dipping: adding the resin glue solution into a glue dipping tank (2), and dipping the fibers through a roller after the fibers pass through the yarns;
s4, detecting the content of the resin: after the fiber is impregnated, detecting whether deviation exists between the resin content and a resin set value or not through a detection platform (3);
s5, winding the prepreg wires: the fiber after gum dipping is rolled up by a rolling motor (5) to be made into prepreg filaments;
s6, packaging: and packaging the prepreg filaments by adopting a plastic film, and preserving at a low temperature after packaging.
9. The dry-process winding prepreg filaments manufacturing process according to claim 8, wherein:
the S1 is added with a dispersion stabilizer PVP and a solvent xylene, wherein the dosage of the curing agent is as follows, the dispersion stabilizer is 1000 parts, the solvent is 1000 parts, the bisphenol A type epoxide is 20-60 parts, the 2-methylimidazole is 40-80 parts, the bisphenol A type epoxide and the 2-methylimidazole are subjected to heating treatment within the range of 110-130 ℃, and are subjected to stirring treatment in the heating process, and the stirring rate is 300-500 r/p/m;
the epoxy resin in the S2 is E51 or E54 resin, and the dosage of the epoxy resin and the imidazole modified curing agent is as follows: 100 parts of epoxy resin, 10-40 parts of imidazole modified curing agent, wherein the reaction temperature of the epoxy resin and the imidazole modified curing agent is 30-50 ℃, and the stirring speed is 200-500 r/p/m in the reaction process;
the fibers in the S3 are carbon fibers/aramid fibers/asphalt-based fibers, and tension is applied after the fibers are threaded, wherein the tension is 20-50N;
the viscosity of the prepared prepreg filaments at normal temperature is 6-10 Pa/S, and the viscosity of the prepreg filaments at 50 ℃ is 0.3-1 Pa/S;
the plastic film in the step S6 is polyethylene or polytetrafluoroethylene, the thickness of the film is 0.5-2 mm, and the low-temperature preservation temperature is minus 18 ℃ to minus 30 ℃.
10. The dry-process winding prepreg filaments manufacturing process according to claim 8, wherein:
the roller in the S3 consists of an upper roller (803) and a lower roller (202), the lower roller (202) is immersed into resin glue solution, the position is fixed, the position of the upper roller (803) is adjustable, and the position is adjusted through the upper roller (803) to regulate and control the resin content of the prepreg filaments.
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US6099906A (en) * 1998-06-22 2000-08-08 Mcdonnell Douglas Corporation Immersion process for impregnation of resin into preforms
JP2012246391A (en) * 2011-05-27 2012-12-13 Jx Nippon Oil & Energy Corp Method of impregnating reinforcing fiber with resin and impregnation device
CN102380956B (en) * 2011-08-26 2014-05-14 武汉理工大学 Method for preparing fiber prepreg filaments by hot-melt method and device thereof
CN104339669B (en) * 2013-08-06 2017-06-27 上海晋飞日精复合材料有限公司 A kind of gumming device and gum dipping process based on hot melt carbon fiber prepreg
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Denomination of invention: A dry winding pre impregnated silk preparation equipment and its preparation process

Granted publication date: 20230516

Pledgee: Agricultural Bank of China Limited by Share Ltd. Pinghu branch

Pledgor: Zhejiang tuanyuan composite material Co.,Ltd.

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