CN108724525A - Continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment and method - Google Patents
Continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment and method Download PDFInfo
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- CN108724525A CN108724525A CN201810441277.6A CN201810441277A CN108724525A CN 108724525 A CN108724525 A CN 108724525A CN 201810441277 A CN201810441277 A CN 201810441277A CN 108724525 A CN108724525 A CN 108724525A
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- continuous fiber
- prepreg tape
- composite material
- thermoplastic composite
- reinforced thermoplastic
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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
Abstract
The invention discloses a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment and methods, the equipment includes tension control system, exhibition silk decentralized system, fiber impregnation system, cooling and shaping system, traction winding system, and wherein fiber impregnation system includes that extrusion die dipping and waveform impregnate die head double-steeping.Its surface is covered by resin leaching when continuous fiber is passed through extrusion die by this method, then by fully being infiltrated when waveform dipping die head, finally obtains unidirectional prepreg tape in homogeneous thickness.It is 0 ° -30 ° to impregnate the undulating path of die head and horizontal sextant angle, it ensure that rove can fully be infiltrated in relatively short distance, while mold is divided into upper and lower mould, gap is conveniently adjusted, it solves the problems such as difficult, mold cleaning is difficult of entrying, improves the operability of equipment.
Description
Technical field
The invention belongs to technical field of composite materials, are related to thermoplastic composite, and in particular to a kind of continuous fiber
Enhance thermoplastic composite unidirectional prepreg tape Preparation equipment and method.
Background technology
Thermoplastic fibre enhancing composite material have the characteristics that shaping efficiency height, can post forming, recoverable, Yu Jin
Quick development is obtained within several years.Its good toughness, fatigue strength are high, impact injury tolerance is high, can meet aircraft industry material
The requirement of higher damage tolerance in Certification；And its product design degree of freedom is big, can be made into complicated shape, is molded adaptability
Extensively.And because thermoplasticity prepreg can store at room temperature for a long time, therefore continuous fiber reinforced thermoplastic composite material prepreg
Manufacturing technology be also continuously available improvement and development.For now, continuous fiber reinforced thermoplastic composite material prepreg
Manufacturing method mainly have melt impregnation, solution dipping, powder spray etc., wherein solution dipping and powder coating methods are to production
Environment and production time requirement are more harsh, are not suitable for industrialized batch production.
The publication of continuous fiber reinforced thermoplastic composite material prepreg is prepared by melt impregnation method relatively
It is more.United States Patent (USP) is realized that the complete wetting of fiber, design are multiple by complicated dipping die head mostly by designing impregnating unit
Miscellaneous, manufacturing cost is higher.The Chinese invention patent of Publication No. " CN101474868A " discloses a kind of continuous lod heat
Plastic composites prepreg tape Preparation equipment, it impregnates continuous fiber using double extrusion dies staggeredly, then by three rollers
Immersion system carries out roll-in dipping to prepreg tape, and to obtain continuous fiber prepreg tape, but the equipment is difficult to control the equal of resin
The thickness and resin content of even property and single layer prepreg tape.The Chinese invention patent of Publication No. " CN104943196A " discloses one
Kind improved continuous fiber reinforced thermoplastic composite material prepreg Preparation equipment, it is added the before the second dipping die mechanism
One film mechanism infiltrates fibrous inside, and is infiltrated to surface fiber by the second impregnating mechanism molten bath, then by height
Temperature and pressure roller third time impregnates, and to ensure the uniformity of prepreg tape, but multiple high temp dipping can be interface characteristics to thermoplastic composite
It can cause to damage.
Invention content
For the above-mentioned problems in the prior art, the present invention provides a kind of continuous fiber reinforced thermoplastic composite woods
Expect unidirectional prepreg tape Preparation equipment and method, surface is covered by resin leaching when continuous fiber passes through extrusion die, then is soaked by waveform
It is fully infiltrated when stain die head, and unidirectional prepreg tape in homogeneous thickness can be obtained；Mold is divided into upper and lower mould simultaneously, and gap is convenient for tune
It is whole, it solves the problems such as difficult, mold cleaning is difficult of entrying, improves the operability of equipment.
For this purpose, present invention employs following technical schemes：
A kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment, including tension control system, exhibition
Silk decentralized system, fiber impregnation system, cooling and shaping system, traction winding system；The tension control system is used for multiply
Continuous fiber exports and gives certain tension force；The exhibition silk decentralized system is for adjusting dispersion tow and heating；It is described
Fiber impregnation system is for impregnating continuous fiber and forming prepreg tape；The cooling and shaping system is used for cold to prepreg tape
But it shapes；The traction winding system is used for the prepreg tape coiling and molding after sizing.
Preferably, the tension control system includes driving creel, and the exhibition silk decentralized system includes exhibition silk heating device,
The fiber impregnation system includes parallel double-screw extruder, extrusion die and waveform dipping die head, the cooling and shaping system
Including being cold-pressed roll shaft, the traction winding system includes dragger and wind-up roll shaft.
Preferably, the tension adjustment range of the driving creel in 200-1000g, put by motor control automatic adjustment spindle
Speed is rolled up, keeps yarn tension steady.
Preferably, the undulating path of the waveform dipping die head and horizontal sextant angle are 0 ° -30 °, meet rove and fully infiltrate
Condition；The die clearance up and down of the waveform dipping die head is adjusted by cylinder, and the content for controlling resin and thickness, upper mold is most
55mm can be increased greatly.
Preferably, the mold materials of the waveform dipping die head select high-quality heat-resisting alloy steel, runner to cross hard chrome, and through mirror
Face formula polishing, molding size are 500*300*180mm, and undulating path length is 100-400mm, and runner is imported and exported by active block stop
Control resin flow.
A kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape preparation method first will be more by driving creel
Stock continuous fiber export, gives certain tension force；Tow is adjusted through exhibition silk heating device and heat again；Thermoplastic resin
It is heated and is melted by parallel double-screw extruder, drenched at extrusion die and invest continuous fiber surface, carried out pre-preg, presoaked
Band；Then prepreg tape carries out double-steeping by the undulating path of waveform dipping die head；Finally, prepreg tape is by cold pressing roll shaft
Wind-up roll shaft coiling and molding is entered by traction machine travel after cooling and shaping.
Preferably, the tow spacing of the exhibition silk heating device and exhibition silk width are adjustable, and strand temperature passes through infrared heating
Device controls.
Preferably, the waveform dipping die head is the second impregnating mechanism, and continuous fiber is complete by resin after undulating path
Full homogeneous impregnation；The mode of heating of the waveform dipping die head is heating bar type core heating, and temperature range is 25 DEG C -450 DEG C,
Temperature is controlled between modified resin melting temperature and the fail temperature of continuous fiber surface conditioning agent.
Preferably, the continuous fiber includes continuous glass fibre, aramid fiber and carbon fiber；The thermoplastic resin
Including general-purpose plastics polypropylene PP, polythene PE, polystyrene PS, polyvinylchloride, engineering plastics polyamide PA, poly- carbonic acid
Ester PC, special engineering plastics polyphenylene thioether PPS, polyether ketone ketone PEKK, polyether-ether-ketone PEEK, polyetherimide PE.
Preferably, for the thermoplastic resin also added with property-modifying additive, the property-modifying additive includes coupling agent, antioxygen
Agent, fire retardant, light stabilizer, nano imvite filler.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) it ensure that rove can fully be infiltrated in relatively short distance, and the gap by adjusting undulating path, can control
Prepreg thickness and resin content processed, obtain uniform continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape.
(2) dipping die head is divided into upper/lower die, can be controlled by cylinder undulating path gap, convenient for wearing silk and cleaning, improves
The operability of equipment.
(3) equipment is simple, easy to operate, is suitable for industrialized batch production.
(4) performance is stablized, and final product quality is high, and economic benefit is apparent.
Description of the drawings
Fig. 1 is a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment provided by the present invention
Structure composition schematic diagram.
Reference sign：1, creel is driven；2, silk heating device is opened up；3, parallel double-screw extruder；4, extrusion die；
5, waveform impregnates die head；6, it is cold-pressed roll shaft；7, dragger；8, wind-up roll shaft.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment come the present invention will be described in detail, specific embodiment therein and explanation only
For explaining the present invention, but it is not as a limitation of the invention.
The invention discloses a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipments, including tension
Control system, exhibition silk decentralized system, fiber impregnation system, cooling and shaping system, traction winding system；The tension control system
For multiply continuous fiber to be exported and gives certain tension force；The exhibition silk decentralized system is for adjusting dispersion tow simultaneously
Heating；The fiber impregnation system is for impregnating continuous fiber and forming prepreg tape；The cooling and shaping system is used for
To prepreg tape cooling and shaping；The traction winding system is used for the prepreg tape coiling and molding after sizing.
Specifically, as shown in Figure 1, the tension control system includes driving creel 1, the exhibition silk decentralized system includes exhibition
Silk heating device 2, the fiber impregnation system include parallel double-screw extruder 3, extrusion die 4 and waveform dipping die head 5, institute
It includes cold pressing roll shaft 6 to state cooling and shaping system, and the traction winding system includes dragger 7 and wind-up roll shaft 8.
Specifically, the tension adjustment range of the driving creel 1 automatically adjusts spindle in 200-1000g, motor control
Speed is unreeled, keeps yarn tension steady.
Specifically, the undulating path of the waveform dipping die head 5 and horizontal sextant angle are 0 ° -30 °, meet rove and fully infiltrate
Condition；The die clearance up and down of the waveform dipping die head 5 is adjusted by cylinder, the content for controlling resin and thickness, upper mold
Maximum can increase 55mm.
Specifically, the mold materials of the waveform dipping die head 5 select high-quality heat-resisting alloy steel, and runner crosses hard chrome, and passes through
Mirror surface type polishes, and molding size is 500*300*180mm, and undulating path length is 100-400mm, and runner is imported and exported by active catch
Block controls resin flow.
The invention also discloses a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape preparation methods, first,
Multiply continuous fiber is exported by driving creel 1, gives certain tension force；Again tow is adjusted through opening up silk heating device 2
And it heats；Thermoplastic resin is heated by parallel double-screw extruder 3 and is melted, and is drenched at extrusion die 4 and is invested continuous fiber surface,
Pre-preg is carried out, prepreg tape is obtained；Then prepreg tape carries out double-steeping by the undulating path of waveform dipping die head 5；Most
Afterwards, prepreg tape is drawn by dragger 7 into 8 coiling and molding of wind-up roll shaft after being cold-pressed 6 cooling and shaping of roll shaft.
Specifically, the tow spacing of the exhibition silk heating device 2 and exhibition silk width are adjustable, and strand temperature passes through infrared heating
Device controls.
Specifically, the waveform dipping die head 5 is the second impregnating mechanism, and continuous fiber is complete by resin after undulating path
Full homogeneous impregnation；The mode of heating of the waveform dipping die head 5 is heating bar type core heating, and temperature range is 25 DEG C -450
DEG C, control temperature is between modified resin melting temperature and the fail temperature of continuous fiber surface conditioning agent.
Specifically, the continuous fiber includes continuous glass fibre, aramid fiber and carbon fiber；The thermoplastic resin
Including general-purpose plastics polypropylene PP, polythene PE, polystyrene PS, polyvinylchloride, engineering plastics polyamide PA, poly- carbonic acid
Ester PC, special engineering plastics polyphenylene thioether PPS, polyether ketone ketone PEKK, polyether-ether-ketone PEEK, polyetherimide PE.
Specifically, for the thermoplastic resin also added with property-modifying additive, the property-modifying additive includes coupling agent, antioxygen
Agent, fire retardant, light stabilizer, nano imvite filler.
Embodiment 1
In the present embodiment, a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape preparation as shown in Figure 1 is set
Standby continuous glass-fiber reinforced polypropylene base unidirectional prepreg tape is prepared, which includes driving creel 1, open up silk heating device 2, is parallel double
Screw extruder 3, extrusion die 4, waveform dipping die head 5, cold pressing roll shaft 6, dragger 7 and wind-up roll shaft 8, specific preparation process
It is as follows：
1) 70 ingot glass continuous filament yarns are installed on the spindle of driving creel 1, tow follows setting automatically when running
Tension 5N puts speed and drafting machine automatic synchronous speed.After yarn enters tension control system, it is fed forward using roller is crossed
Yarn guide leading portion carries out collection silk.
2) glass fiber yarn is uniformly unfolded on exhibition yarn heating device 2 by adjustable points wire comb, then is squeezed by exhibition silk stick
Flattening.Fiber is regulated and controled by infrared heater, and preheating temperature is set as 190 DEG C.
3) (KP503, melt index are 60.0g/10min (230 DEG C, 2.16kg) to PP monomers, and China Petrochemical Corporation has
Limit company), it is put into the spout of parallel double-screw extruder 3, extrusion die is controlled by adjusting screw rod rotating speed and rate of feeding
Resin flow at first 4.
4) 4 resin melt extrusion of extrusion die carries out first time dipping to continuous glass-fiber yarn, is uniformly covered in fiber surface
One layer of resin melt of lid.Yarn is imported into waveform again and impregnates die head 5, upper and lower die clearance is set as 3mm, and temperature is set as 190 DEG C,
It realizes that the complete wetting of fiber, inlet and outlet remove Excess resin with block, controls resin content and prepreg tape original depth.
5) cold pressing roller device 6 will be imported by the continuous glass fibre band of resin thorough impregnation, by between adjusting roller
Gap controls prepreg tape final thickness, which is vertical three-roll formation calender, and circulating water makes molten resin cooled and solidified simultaneously
Ensure that fiber belt surface is smooth bright and clean.It is finally by two roller draggers 7 and wind-up roll shaft 8 that continuous fiber reinforced polypropylene base is unidirectional
Prepreg tape coiling and molding.
It is prepared and infiltrates the complete and uniform continuous glass-fiber reinforced polypropylene base unidirectional prepreg tape of resin content, single monolayer thick
It is 0.25mm to spend, fiber content 65wt%, and single layer tensile strength reaches 800MPa.
Embodiment 2
In the present embodiment, a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape preparation as shown in Figure 1 is set
Standby continuous carbon fibre reinforced nylon 6 (PA6) unidirectional prepreg tape is prepared, which includes driving creel 1, exhibition silk heating device 2, puts down
Row double screw extruder 3, extrusion die 4, waveform dipping die head 5, cold pressing roll shaft 6, dragger 7 and wind-up roll shaft 8, it is specific to prepare
Process is as follows：
Basic process is same as Example 1, the difference is that continuous fiber is different with resin system and temperature, this reality
The continuous fiber for applying example is carbon fibre thread, and resin matrix PA6 opens up silk heating temperature and is set as 260 DEG C, and waveform impregnates die head
5 temperature is set as 260 DEG C.
The uniform continuous carbon fibre enhancing PA6 unidirectional prepreg tapes of any surface finish resin content are prepared, thickness in monolayer is
0.22mm, fiber content 58wt%, single layer tensile strength reach 1800MPa.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to restrict the invention, all essences in the present invention
Any modification, equivalent replacement and improvement etc., should be included in protection scope of the present invention made by within refreshing and spirit
Within.
Claims (10)
1. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment, including tension control system, exhibition silk
Decentralized system, fiber impregnation system, cooling and shaping system, traction winding system, it is characterised in that：The tension control system is used
In multiply continuous fiber is exported and gives certain tension force；The exhibition silk decentralized system is for adjusting dispersion tow and adding
Heat；The fiber impregnation system is for impregnating continuous fiber and forming prepreg tape；The cooling and shaping system for pair
Prepreg tape cooling and shaping；The traction winding system is used for the prepreg tape coiling and molding after sizing.
2. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment according to claim 1,
It is characterized in that：The tension control system includes driving creel (1), and the exhibition silk decentralized system includes exhibition silk heating device (2),
The fiber impregnation system includes parallel double-screw extruder (3), extrusion die (4) and waveform dipping die head (5), the cooling
Shaping system includes cold pressing roll shaft (6), and the traction winding system includes dragger (7) and wind-up roll shaft (8).
3. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment according to claim 2,
It is characterized in that：The tension adjustment range of the driving creel (1) is unreeled in 200-1000g, motor control automatic adjustment spindle
Speed keeps yarn tension steady.
4. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment according to claim 2,
It is characterized in that：The undulating path of the waveform dipping die head (5) and horizontal sextant angle are 0 ° -30 °, meet rove and fully infiltrate item
Part；The die clearance up and down of the waveform dipping die head (5) is adjusted by cylinder, the content for controlling resin and thickness, upper mold
Maximum can increase 55mm.
5. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment according to claim 4,
It is characterized in that：The mold materials of the waveform dipping die head (5) select high-quality heat-resisting alloy steel, runner to cross hard chrome, and through minute surface
Formula polishes, and molding size is 500*300*180mm, and undulating path length is 100-400mm, and runner is imported and exported by active block stop control
Resin flow processed.
6. according to a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape system of claim 2 to 5 any one of them
Preparation Method, it is characterised in that：First, multiply continuous fiber is exported by driving creel (1), gives certain tension force；Again
Tow is adjusted through exhibition silk heating device (2) and is heated；Thermoplastic resin is heated by parallel double-screw extruder (3) and is melted,
Leaching invests continuous fiber surface at extrusion die (4), carries out pre-preg, obtains prepreg tape；Then prepreg tape is impregnated by waveform
The undulating path of die head (5) carries out double-steeping；Finally, prepreg tape after being cold-pressed roll shaft (6) cooling and shaping by dragger
(7) it draws into wind-up roll shaft (8) coiling and molding.
7. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape preparation method according to claim 6,
It is characterized in that：The tow spacing and exhibition silk width of the exhibition silk heating device (2) are adjustable, and strand temperature passes through infrared heater control
System.
8. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape preparation method according to claim 6,
It is characterized in that：The waveform dipping die head (5) is the second impregnating mechanism, and continuous fiber is completely equal by resin after undulating path
Even dipping；The mode of heating of the waveform dipping die head (5) is heating bar type core heating, and temperature range is 25 DEG C -450 DEG C,
Temperature is controlled between modified resin melting temperature and the fail temperature of continuous fiber surface conditioning agent.
9. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape preparation method according to claim 6,
It is characterized in that：The continuous fiber includes continuous glass fibre, aramid fiber and carbon fiber；The thermoplastic resin includes logical
With plastics polypropylene PP, polythene PE, polystyrene PS, polyvinylchloride, engineering plastics polyamide PA, polycarbonate are special
Kind engineering plastics polyphenylene thioether PPS, polyether ketone ketone PEKK, polyether-ether-ketone PEEK, polyetherimide PE.
10. a kind of continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape preparation method according to claim 9,
It is characterized in that：For the thermoplastic resin also added with property-modifying additive, the property-modifying additive includes coupling agent, antioxidant, fire-retardant
Agent, light stabilizer, nano imvite filler.
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| CN201810441277.6A CN108724525A (en) | 2018-05-10 | 2018-05-10 | Continuous fiber reinforced thermoplastic composite material unidirectional prepreg tape Preparation equipment and method |
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| CN110271208A (en) * | 2019-06-20 | 2019-09-24 | 青岛隆创科技有限公司 | A kind of thermoplasticity 3D braiding continuous fiber enhancing drawing and extruding section bar forming method and equipment |
| CN111113719A (en) * | 2019-12-27 | 2020-05-08 | 上海普利特复合材料股份有限公司 | Fiber impregnation die with adjustable tension and low material stagnation amount |
| CN111186138A (en) * | 2020-04-13 | 2020-05-22 | 北京化工大学 | 3D printing device and process for continuous fiber melt impregnation |
| CN111745857A (en) * | 2020-07-10 | 2020-10-09 | 江苏奇一科技有限公司 | Preparation method and equipment of unidirectional fiber reinforced resin body with regular cross section |
| 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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| 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 |
| US11396146B2 (en) | 2020-07-10 | 2022-07-26 | Jiangsu Qiyi Technology Co., Ltd | Method and equipment for making unidirectional continuous fiber-reinforced thermoplastic composite material |
| CN111745857B (en) * | 2020-07-10 | 2021-03-16 | 江苏奇一科技有限公司 | Preparation method and equipment of unidirectional fiber reinforced resin body with regular cross section |
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Application publication date: 20181102 |