CN113172906B - Preparation method and equipment of pressure-sensitive continuous fiber reinforced resin prepreg tape - Google Patents
Preparation method and equipment of pressure-sensitive continuous fiber reinforced resin prepreg tape Download PDFInfo
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- CN113172906B CN113172906B CN202110453710.XA CN202110453710A CN113172906B CN 113172906 B CN113172906 B CN 113172906B CN 202110453710 A CN202110453710 A CN 202110453710A CN 113172906 B CN113172906 B CN 113172906B
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- 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]
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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
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
A preparation method and equipment of pressure-sensitive continuous fiber reinforced resin prepreg tape relate to the technical field of continuous fiber reinforced thermoplastic composite materials, and comprise the following steps: at least two strip unreeling frames for respectively loading and delivering release paper and CFP strips; a pressure-sensitive adhesive extrusion die for extruding the molten resin to the pressure-sensitive adhesive film layer guide roller; the driving device is used for driving the pressure-sensitive adhesive film layer guiding roller to rotate at a set rotating speed so as to smear the molten resin on the upper surface of the CFP strip; the flexible roller pressing device is used for pressing the release paper and the CFP belt material together, wherein the upper surface of the CFP belt material and the lower surface of the release paper are bonded together through molten resin coating, and the CFP belt material and the release paper which are bonded together are pulled by the pulling module and rolled by the rolling module to form the pressure-sensitive continuous fiber reinforced resin prepreg tape.
Description
Technical Field
The invention relates to the technical field of continuous fiber reinforced thermoplastic composite materials, in particular to a preparation method and equipment of a pressure-sensitive continuous fiber reinforced resin prepreg tape.
Background
Various resin composite materials reinforced by fibers are gradually replacing traditional metal materials, and are widely applied to various fields requiring light weight, including various vehicles such as airplanes, automobiles and the like. With the application development of fiber reinforced thermoplastic composite materials, continuous fiber reinforced thermoplastic material impregnated belts are gradually popularized due to the excellent physical properties and various processing and molding modes. The method is widely applied to a plurality of fields such as transportation, aviation by army and civil aviation, petrochemical industry, sports apparatuses, building materials and the like. The aims of light product quality, high strength, corrosion resistance, recycling and convenient processing and forming are fulfilled, and the industry is vigorously developed due to the excellent comprehensive performance.
In recent years, a flexible reinforced thermoplastic composite pipe (Reinforced Thermoplastic Pipes, RTP pipe for short) is a high-pressure plastic composite pipe, has the characteristics of good flexibility, corrosion resistance, high pressure resistance, impact resistance, wear resistance, light weight, easy connection, coiling, long-distance jointless rapid laying and the like, can well overcome the corrosion problem of steel pipes and the pressure resistance problem of plastic pipes, and can be applied to the fields of petroleum and natural gas exploitation, high-pressure long-distance natural gas transportation and various pipelines requiring high-pressure transportation media. After first being put into use in the united kingdom since 6 in 1995, RTP pipes are widely used as oil and gas gathering and transporting pipelines and are rapidly popularized in other fields, such as urban pipe networks, natural gas transportation, chemical industry and the like, as corrosion-resistant and high-pressure-resistant long-distance transportation pipelines.
In the winding process of the prepreg tape, the prepreg tape is heated and melted firstly, and then rotated for a certain angle to increase the number of layers of the pavement by winding the prepreg tape, so that the reinforced thermoplastic composite pipe with excellent reinforcing effect is obtained. High temperature melting can result in performance loss of prepreg tape reinforcement and can present challenges for process control and cost control. The wettability of glass fibers in the resin is greatly influenced by the thickness of the final prepreg tape, and the difficulty in controlling equipment and technology in the cooling process of the ultra-thick prepreg tape from a molten state is greatly improved. Some researchers have made related attempts to address these issues. The prepreg tape is produced once by using the current molten resin infiltration process, and the thickness of the prepreg tape can be barely achieved, but the wettability between the glass fiber and the resin of the prepreg tape prepared by the method is extremely poor, so that the defects such as dry yarns and the like of the tape are caused, and finally, the comprehensive performance of the product is reduced. Another disadvantage of this approach is the high demands on the cooling equipment and the difficulty in process control, which can easily lead to untimely cooling of the impregnated tape, and thus to a severe shrinkage of the impregnated tape when the crystallinity of the polymer is increased. Another attempt has been made to use the thermal compounding process currently in common use, which uses two or more layers of prepreg tape finished products to be heated by the heating rollers of a thermal compounding machine, and the prepreg tape between the upper and lower heating rollers of the thermal compounding machine is melted by heating, so that it is bonded together to prepare an ultra-thick prepreg tape. The disadvantage of this method is obvious, because the prepreg tape between the upper and lower heating rollers is heated from outside to inside by the melting of the heating rollers of the thermal compounding machine, so that the prepreg tape must be melted integrally to effectively fuse the contact surfaces of the two layers of prepreg tapes. In this way, the prepreg tape itself is disturbed in its original linear distribution under the pressure of the hot press roller, and forms an irregular curved shape. This fiber arrangement clearly has a negative impact on the mechanical properties of the final prepreg tape.
The effective fusion of the fibers and the resin of the continuous fiber reinforced resin composite material and the uniform distribution of the continuous fibers along the width direction of the product increase the difficulty of the effective fusion of the fibers and the resin when the ultra-thick continuous fiber reinforced resin composite material strip is produced by adopting a common hot melt resin process. The degree of effective fusion of the fiber and the resin is a key characteristic index for evaluating the physical properties of the product, namely the mechanical continuous fiber reinforced tree composite material strips are adhered and connected into a whole. And other preparation process technologies, such as a secondary hot melting composite processing technology, heat two layers of continuous fiber reinforced tree composite material strips which need to be connected with each other to a molten state to prepare an ultra-thick continuous fiber reinforced tree composite material strip with the thickness overlapped and connected into a whole; the disadvantage of this kind of technology is that when two layers of continuous fiber reinforced tree composite material strips attached to each other are heated to a molten state, the resin and the fiber are easy to change, and the mechanical properties of the ultra-thick continuous fiber reinforced tree composite material strips are affected. For example, chinese patent CN104669647A of QY discloses a preparation process and equipment for a continuous fiber reinforced thermoplastic composite material, which adopts a traditional double extrusion casting process and adopts an on-line compounding process to prepare a thickened strip. The defect is that the content of the upper layer and the lower layer cannot be controlled, so that the interlayer strength of the prepreg tape is unstable. And because of the double extrusion system adopted in the design process, the equipment investment is large and the space arrangement is wasted. Therefore, the problems need to be solved in the design and processing process of the high-strength ultra-thick continuous glass fiber reinforced thermoplastic impregnating material.
The thermoplastic resin film which is cured and is adopted by CN105346200A patent of Shaanxi Tianzhi new material science and technology Co., ltd is directly compounded with continuous fibers through a hot pressing roller, in the process, the thermoplastic resin has poor infiltration effect on the continuous fibers due to poor fluidity and poor hot melting effect of hot pressing, the problems of unsatisfactory infiltration effect, poor interface effect and low material strength of the continuous fiber reinforced thermoplastic resin composite material are directly caused, and the process is limited by the problems that the thermoplastic film has size shrinkage in the heating process, so that the uniform distribution of the product resin is difficult to ensure; and the secondary processing of reheating the resin film is adopted, so that the economy is lacking, and the cost performance of the product is low.
The invention provides a preparation process and a process of a continuous fiber reinforced thermoplastic composite material with a pressure-sensitive adhesive film layer on the surface, in particular to a combined design of a hot-melt resin extrusion die head and a grease coating guide roller, and a preparation process and a process for preparing an ultra-thick continuous fiber reinforced thermoplastic composite material by selecting a resin with a melting point lower than that of the prepared continuous fiber reinforced resin composite material which needs to be mutually overlapped in thickness as a material for pasting a connecting layer.
At present, aiming at the pressure-sensitive continuous fiber reinforced resin prepreg tape, a device and a method which are simple in operation in the manufacturing process and can effectively improve the product quality are needed to be designed.
Disclosure of Invention
The invention aims to provide a preparation method and equipment of a pressure-sensitive continuous fiber reinforced resin prepreg tape, so as to solve the problems.
Embodiments of the present invention are implemented as follows:
in one aspect of the embodiments of the present invention, there is provided an apparatus for preparing a pressure-sensitive continuous fiber reinforced resin prepreg tape, including:
at least two strip unreeling frames for respectively loading and delivering release paper and CFP strips;
a pressure-sensitive adhesive extrusion die for extruding the molten resin to the pressure-sensitive adhesive film layer guide roller;
the driving device is used for driving the pressure-sensitive adhesive film layer guiding roller to rotate at a set rotating speed so as to smear the molten resin on the upper surface of the CFP strip;
the flexible roller pressing device is used for pressing the release paper and the CFP strip together, wherein the upper surface of the CFP strip and the lower surface of the release paper are bonded together through the molten resin coating, and the CFP strip and the release paper which are bonded together are pulled by the pulling module and rolled by the rolling module to form the pressure-sensitive continuous fiber reinforced resin prepreg tape.
Optionally, the method comprises: the rotation speed of the pressure-sensitive adhesive film layer guiding roller is adjustable.
Optionally, the die outlet lip of the pressure-sensitive adhesive extrusion die is in a long and narrow structure, and a first gap is formed between the die outlet lip and the pressure-sensitive adhesive film layer guiding roller.
Optionally, the extending direction of the die outlet lip is parallel to the axis of the pressure-sensitive adhesive film layer guiding roller.
Optionally, the setting range of the first gap is 0.1-30 mm, and the angle between the outlet orientation of the die head outlet lip and the horizontal plane is 10-160 degrees.
Optionally, the device further comprises two tensioning and flattening devices, wherein the two tensioning and flattening devices are used for tensioning and flattening the release paper and the CFP strip respectively.
Optionally, two heating devices are further included for respectively performing heat treatment on the release paper and the CFP strip.
Optionally, the flexible roller pressing device consists of three groups of rollers which are staggered and parallel and are arranged in a 'delta' -shaped structure; the flexible roller pressing device with the 'delta' structure formed by the three groups of rollers comprises two arrangement forms of a positive delta-delta structure or an inverted delta-delta structure.
Optionally, the center-to-center distance between the three sets of rollers is adjustable.
Optionally, each set of rollers of the flexible roller pressing device is provided with a built-in cooling mechanism.
Optionally, the pressure-sensitive adhesive film layer guiding roller is provided with a built-in heating mechanism.
A preparation method of a pressure-sensitive continuous fiber reinforced resin prepreg tape comprises the following steps:
providing the preparation device;
loading release paper and CFP strips on two strip unreeling frames respectively;
extruding molten resin through a pressure-sensitive adhesive extrusion die onto a rotating pressure-sensitive adhesive film layer guiding roller which rotates to smear the molten resin on the upper surface of a first tape;
pressing the first strip and the second strip together by a flexible roller pressing device, wherein the upper surface of the first strip and the lower surface of the second strip are bonded together by the molten resin coating; and the first belt material and the second belt material which are bonded together are respectively pulled and rolled by the pulling module and the rolling module to form the pressure-sensitive continuous fiber reinforced resin prepreg tape.
The pressure-sensitive adhesive extrusion die head is used for extruding the molten resin to the rotating pressure-sensitive adhesive film layer guide roller, so that the molten resin is smeared on the upper surface of the CFP strip, then the CFP strip and the release paper are pressed together through the flexible roller pressing device, the pressure-sensitive continuous fiber reinforced resin prepreg tape is formed after being pulled by the traction module and rolled by the rolling module, the manufacturing process is simple to operate, and the yield is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a process for extruding a pressure sensitive adhesive through an extrusion die in accordance with an embodiment of the present invention;
FIG. 2 is a schematic representation of a three-dimensional process for extruding a pressure sensitive adhesive through an extrusion die in accordance with an embodiment of the present invention;
FIG. 3 is a schematic process diagram of a release layer with pressure sensitive adhesive according to an embodiment of the present invention;
FIG. 4 is a three-dimensional process schematic of an embodiment of the invention utilizing a release layer with pressure sensitive adhesive;
FIG. 5 is a schematic side view of a V-arrangement flattening apparatus of an embodiment of the present invention;
fig. 6 is a schematic side view of a flexible platen roller according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 2, the present embodiment provides a preparation apparatus for a pressure-sensitive continuous fiber reinforced resin prepreg tape, which includes: at least two strip unreeling frames, a pressure sensitive adhesive extrusion die head, a driving device and a flexible roller pressing device.
The two strip unreeling frames are a first material unreeling frame and a second material unreeling frame respectively; the first material unreeling frame and the second material unreeling frame are used for loading and conveying release paper and CFP strips respectively.
The pressure-sensitive adhesive extrusion die is used for extruding the molten resin to the pressure-sensitive adhesive film layer guide roller.
The driving device is used for driving the pressure-sensitive adhesive film layer guiding roller to rotate so as to smear the molten resin on the upper surface of the CFP strip.
The flexible roller pressing device is used for pressing the release paper and the CFP strip together, wherein the upper surface of the CFP strip and the lower surface of the release paper are bonded together through the molten resin coating, and the CFP strip and the release paper which are bonded together are pulled by the pulling module and wound by the winding module to form the pressure-sensitive continuous fiber reinforced resin prepreg tape.
In this embodiment, the pressure-sensitive adhesive extrusion die head is used for extruding the molten resin onto the rotating pressure-sensitive adhesive film layer guiding roller, so that the molten resin is smeared on the upper surface of the CFP belt material, then the CFP belt material and the release paper are pressed together by the flexible roller pressing device, and the pressure-sensitive continuous fiber reinforced resin prepreg tape is formed after being drawn by the drawing module and rolled by the rolling module, and the manufacturing process is simple to operate and has higher yield.
In this embodiment, the rotational speed of the pressure-sensitive adhesive film layer guide roller is adjustable. Specifically, the hot melt resin guiding roller is a device which is driven independently and the rotation speed of which can be adjusted independently; the hot melt resin coated on the roller surface of the guide roller is uniformly coated on the upper surface of the CFP strip material in a continuous rotation mode through the rotary motion of the guide roller of the pressure-sensitive adhesive film layer.
In this embodiment, the die outlet lip of the pressure-sensitive adhesive extrusion die has a long and narrow structure, and a first gap is provided between the die outlet lip and the pressure-sensitive adhesive film layer guiding roller. The extending direction of the die outlet lip is parallel to the axis of the pressure-sensitive adhesive film layer guiding roller. The setting range of the first gap is 0.1-30 mm, and the angle between the outlet direction of the die head outlet lip and the horizontal plane is 10-160 degrees.
In the embodiment, the flexible roller pressing device consists of three groups of rollers which are staggered and parallel and are arranged in a 'delta' -shaped structure; the flexible roller pressing device with the 'delta' structure formed by the three groups of rollers comprises two arrangement forms of a positive delta-delta structure or an inverted delta-delta structure. The center-to-center distance between the three sets of rollers is adjustable. Each group of rollers of the flexible roller pressing device is provided with a built-in cooling mechanism. The pressure sensitive adhesive layer guiding roller is provided with a built-in heating mechanism.
The die outlet lip of the hot melt pressure sensitive adhesive extrusion die head device is parallel to the axis of the hot melt resin guide roller; setting the angle position and the gap between the extrusion die head device and the hot melt resin guiding roller by taking the roller surface of the hot melt resin guiding roller as a reference; the method is characterized in that the gap setting range between the die outlet lip of the extrusion die device and the roll surface of the hot melt resin guide roll is 0.1-30 mm; the included angle between the die head of the extrusion die head device and the horizontal plane is set to be 10-160 degrees.
The roller pressure compound device consists of three groups of rollers which are staggered and parallel and are arranged in a 'delta' -shaped structure; the flexible roller pressing device is characterized in that the flexible roller pressing device with the 'delta' structure formed by three groups of rollers can be in two arrangement forms of a genuine delta-delta structure or an inverted delta-delta structure.
The method comprises the steps of adjusting center distances among three groups of rollers of each flexible roller pressing device by adjusting positions of a top roller of a positive inverted-Y-shaped flexible roller pressing device and a bottom roller of an inverted-Y-shaped flexible roller pressing device, and setting wrap angles of at least two layers of continuous fiber reinforced strips and the top or bottom rollers of a roller pressure compounding device; the fan-shaped wrap angle ranges from 5 degrees to 180 degrees.
The composite pressure required by hot melt bonding between at least two layers of continuous fiber reinforced strip materials is obtained by adjusting the center distance of the rollers of the flexible roller pressing device.
The pressure-sensitive adhesive film layer guide roller is provided with a built-in heating mechanism; the built-in heating mechanism can be a tubular electric heating element inserted into the inner cavity of the roller; or liquid heating medium passing through the built-in channel of the roller, such as hot oil, and the end of the shaft head on the transmission side is connected with an external heat supply source through a rotary joint device.
Each group of rollers of the flexible roller pressing device is provided with a built-in cooling mechanism; the cooling mechanism is a flow passage which is internally arranged in the roller, and the end part of the shaft head at the transmission side of the cooling mechanism is connected with external cooling water through a rotary joint device;
shaft head rotary support pairs at the two ends of the roller at the top of the positive character or the bottom of the inverted character of each flexible roller pressing device are respectively connected with a linear movement transmission pair device capable of moving in a linear manner, so that the independent adjustment of the center distances of the three pressure composite rollers of each character unit module group is realized; the shaft heads of each group of pressure composite rollers at the transmission side transmit rotary motion by adopting a chain wheel or a gear.
The hot melt resin material includes, but is not limited to, a hot melt composite material formed by compounding PE, PP, PA or different materials. The continuous fiber reinforced strip material can also be a composite of glass fiber and various thermoplastic resins; or a composite of carbon fibers and various thermoplastic resins; or a composite of glass fiber and carbon fiber mixed with various thermoplastic resins; or a composite of other fibers with various types of thermoplastic resins.
The material combination of the continuous fiber reinforced tapes formed into the continuous fiber reinforced tape with the thickness superimposed and combined into a whole can be, but is not limited to, a composite material formed by the same fiber and resin, a composite material formed by the same fiber and different resins, or a composite material formed by different glass fibers and different thermoplastic resins. FIG. 3 is a schematic process diagram of a release layer with pressure sensitive adhesive according to an embodiment of the present invention, and FIG. 4 is a schematic three-dimensional process diagram of a release layer with pressure sensitive adhesive according to an embodiment of the present invention; FIG. 5 is a schematic side view of a V-arrangement flattening apparatus of an embodiment of the present invention; fig. 6 is a schematic side view of a flexible platen roller according to an embodiment of the present invention. The preparation process of fig. 3 to 6 is similar to that of fig. 1 and 2, and specifically, the release paper in fig. 1 is replaced by a release layer with a pressure-sensitive adhesive, which is not described herein again.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A production apparatus of a pressure-sensitive continuous fiber reinforced resin prepreg tape, characterized by comprising:
at least two strip unreeling frames for respectively loading and delivering release paper and CFP strips;
a pressure-sensitive adhesive extrusion die for extruding the molten resin to the pressure-sensitive adhesive film layer guide roller;
the driving device is used for driving the pressure-sensitive adhesive film layer guiding roller to rotate at a set rotating speed so as to smear the molten resin on the upper surface of the CFP strip;
the flexible roller pressing device is used for pressing the release paper and the CFP strip together, wherein the upper surface of the CFP strip and the lower surface of the release paper are bonded together through the molten resin, and the bonded CFP strip and release paper are pulled by the pulling module and rolled by the rolling module to form the pressure-sensitive continuous fiber reinforced resin prepreg tape;
the device also comprises two tensioning flattening devices which are used for tensioning and flattening the release paper and the CFP strip respectively;
the device also comprises two heating devices, which are used for respectively carrying out heating treatment on the release paper and the CFP strip;
the flexible roller pressing device consists of three rollers which are staggered and parallel and are arranged in a 'delta' -shaped structure; the flexible roller pressing device with the 'delta' structure formed by the three rollers comprises two arrangement forms of a positive delta 'structure or an inverted delta' structure;
each roller of the flexible roller pressing device is provided with a built-in cooling mechanism;
the pressure sensitive adhesive layer guiding roller is provided with a built-in heating mechanism.
2. The production apparatus according to claim 1, wherein a rotational speed of the pressure-sensitive adhesive film layer guide roller is adjustable.
3. The apparatus according to claim 1, wherein a die outlet lip of the pressure-sensitive adhesive extrusion die has an elongated structure, and a first gap is provided between the die outlet lip and the pressure-sensitive adhesive film layer guiding roller.
4. The manufacturing apparatus of claim 1, wherein a center-to-center distance between the three rollers is adjustable.
5. The preparation method of the pressure-sensitive continuous fiber reinforced resin prepreg tape is characterized by comprising the following steps of:
providing a preparation apparatus according to claim 1;
loading release paper and CFP strips on two strip unreeling frames respectively;
extruding molten resin through a pressure-sensitive adhesive extrusion die onto a rotating pressure-sensitive adhesive film layer guiding roller which rotates to smear the molten resin on the upper surface of a first tape;
pressing the first strip and the second strip together by a flexible roller pressing device, wherein the upper surface of the first strip and the lower surface of the second strip are bonded together by the molten resin;
and the first belt material and the second belt material which are bonded together are respectively pulled and rolled by the pulling module and the rolling module to form the pressure-sensitive continuous fiber reinforced resin prepreg tape.
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| CN107297840B (en) * | 2017-08-01 | 2023-02-03 | 江苏恒神股份有限公司 | Prepreg production is with trading paper equipment |
| CN114348757B (en) * | 2022-01-18 | 2023-09-22 | 乐清市智能装备与制造研究院 | Self-repairing continuous fiber prepreg tape preparation device |
| CN114348756A (en) * | 2022-01-18 | 2022-04-15 | 乐清市智能装备与制造研究院 | Intelligent continuous carbon fiber prepreg tape preparation device |
| CN114800937A (en) * | 2022-03-21 | 2022-07-29 | 江苏奇一科技有限公司 | Continuous enhanced composite material producing apparatus and method in waterfall double-side spraying mold presoaking mode |
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| CN103660319B (en) * | 2012-09-04 | 2018-01-09 | 上海杰事杰新材料(集团)股份有限公司 | Produce equipment and the application of continuous fiber reinforced thermoplastic resin prepreg tape |
| CN103804888B (en) * | 2012-11-07 | 2017-11-10 | 合肥杰事杰新材料股份有限公司 | A kind of continuous glass-fiber enhancing Thermoplastic polyurethane composite material and preparation method thereof |
| US11806899B2 (en) * | 2017-03-22 | 2023-11-07 | Toray Industries, Inc. | Method for producing prepreg and method for producing fiber-reinforced composite material |
| JP6854880B2 (en) * | 2017-03-23 | 2021-04-07 | 帝人株式会社 | Self-adhesive prepreg and its manufacturing method |
| CN111775366B (en) * | 2020-07-10 | 2021-04-27 | 江苏奇一科技有限公司 | Preparation method and equipment of unidirectional continuous fiber reinforced thermoplastic composite material |
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