CN107283861B - A kind of unilateral conductivity fibrous thermoplastic enhances the preparation process of band - Google Patents
A kind of unilateral conductivity fibrous thermoplastic enhances the preparation process of band Download PDFInfo
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- CN107283861B CN107283861B CN201710464765.4A CN201710464765A CN107283861B CN 107283861 B CN107283861 B CN 107283861B CN 201710464765 A CN201710464765 A CN 201710464765A CN 107283861 B CN107283861 B CN 107283861B
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- fiber
- band
- preparation process
- fibrous thermoplastic
- unilateral conductivity
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Classifications
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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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
Abstract
The present invention, which provides a kind of unilateral conductivity fibrous thermoplastic, enhances band and its preparation process.Step of preparation process includes: to put fine and fibrillation processing, tension adjustment, thin-film unreeling, heat treatment, printing dipping, heat pressure adhesive, cold pressing setting, wind several basic steps.The present invention is a kind of unilateral conductivity fibrous thermoplastic enhancing band preparation process based on 3D printing technique, realizes the rapid shaping of unilateral conductivity fiber-reinforced tape, greatly simplifies production stage, improves production efficiency.Unilateral conductivity fiber-reinforced tape of the invention have fiber be evenly distributed, good stability of the dimension, the remarkable advantages such as good mechanical performance.
Description
Technical field
The invention belongs to field of polymer composite material, and in particular to a kind of unilateral conductivity fibrous thermoplastic enhances band
Preparation process.
Background technique
In recent years, thermoplastic continuous fibers composite material is due to excellent stretch-proof, shock resistance and corrosion resistance,
And it is lower and recyclable to have the characteristics that relative density, thus obtained swift and violent development.With space flight and aviation, automobile and other industries
Fast development, to the performances such as heat-resisting, wear-resisting, antifatigue, corrosion-resistant of material, more stringent requirements are proposed.Thermoplasticity connects at present
The base resin material of continuous fibre reinforced composites band be mostly using generic engineering plastics such as polyethylene, polypropylene, fiber with
Resin bonding strength is low, and solvent resistance, fatigue durability of manufactured composite material tape etc. tend not to meet practical application needs.
In addition, the key for preparing the material is infiltration of the resin to fiber, especially for actual production, it should guarantee continuous metaplasia
It produces, guarantees abundant infiltration of the resin to fiber again.
Currently, thermoplastic continuous fibers enhancing composite material tape preparation method mainly include solution dipping, melt impregnation,
Powder dipping, film stacking method etc., although there are many method, every kind of method has respective advantage and disadvantage.Although solution dipping method
Simple process, equipment is simple, but needs to remove solvent by heating, pollutes big, harm health.If solvent volatilization is not exclusively,
The performance of band can then be generated and be seriously affected.Melt impregnation method has higher limitation, due to needing to add thermoplastic resin
Heat fusing, heat consumption are big；Viscosity after resin melting is high (usually 500~5000Pas), is generally difficult completely to soak fiber
Profit.The deficiency of powder infusion process is that the infiltration of fiber could only be completed in molding process, and the time needed for infiltration,
Temperature, pressure are related with the size of diameier and its distribution situation, and the prepreg quality stability of preparation is poor and not easily-controllable
System.Film mulching method, after mostly using prepreg tape to form, later period hot pressing overlay film not only causes workload to increase, energy consumption, and imitates
Rate is low, the bad caused bubble of exhaust is easy to appear, to cause substandard products.
Summary of the invention
The object of the present invention is to provide the preparation process that a kind of unilateral conductivity fibrous thermoplastic enhances band, this technique sides
Method overcomes the disadvantage of classical production process dipping effect difference, greatlies simplify processing step.
The technical solution adopted by the present invention are as follows: a kind of preparation process of unilateral conductivity fibrous thermoplastic enhancing band is provided,
The following steps are included:
(1) it puts fine with fibrillation processing: continuity fiber roll being placed on creel, continuity fiber passes through on creel
Small thread eye traction export, the continuity fiber pass through thread eye grillage and become band with the arrangement of fiber-opening apparatus uniform parallel,
The continuity fiber applies the tension of 100~500N through tensioning roller group again；
(2) film roll unreels: polymer material membrane volume being placed in unwinding motor, the polymer material membrane
It exports through guide roller, and is collected at one with continuity fiber, under the polymer material membrane is located at continuity fiber just
Then the one side of side adjusts height between two press bonding rollers, continuity fiber is made to fit together with polymer material membrane；
(3) heat: the heating that continuity fiber and polymer material membrane pass through workbench region jointly is filled
Set, 10~60 DEG C on the melting point polymer used in polymer material membrane of heating and temperature control, make thin film melt soften but
Do not occur subject to vertical drop；
(4) printing dipping: fluoropolymer resin is melted into item using the 3D printer handpiece on 3D printer and is printed upon continuity fibre
The one side of the surface of dimension, the heating temperature of the 3D printer handpiece are 180~380 DEG C, and actual temp can be according to selected
Depending on polymer resin material, 3D printer adjusts control 3D printer handpiece by slide bar guide rail and 3 motors can be along band
It is mobile around parallel plane, but it is fine to input continuity by good program prepared in advance for adjustable upper-lower height
Program calculates the travel path of 3D printer handpiece automatically after the travel speed of dimension travel speed and 3D printer handpiece, finally makes
It is S-type in the upper surface of continuity fiber that the fluoropolymer resin of 3D printer handpiece printing melts a track
(5) heat pressure adhesive: the fluoropolymer resin of printing is melted into item and underlying polymer film passes through upper and lower hot pressing roll-in
It closes, obtains prepreg tape, the surface temperature control of the upper and lower hot-pressing roller is 20 below the melting point polymer used in thin polymer film
~60 DEG C；
(6) cold pressing setting: the cooling roller group of the importing of prepreg tape obtained by step (5) is cooling, condensed water work is led in cooling roller group
For cooling medium, the roller group spacing up and down of cooling roller group is adjusted while cooling, controls prepreg tape thickness of strip, the cooling
Roller group pressure, which controls to finally obtain in 1~5MPa, enhances band with a thickness of the unilateral conductivity fibrous thermoplastic of 0.1~5mm；
(7) it winds: the unilateral conductivity fibrous thermoplastic made being enhanced by band band by traction roller and is wound into winding dress
It sets.
Preferably, 0.1~5m/min of 3D printer handpiece travel rate.
Preferably, the fiber-opening apparatus in step (1) is using one in air fibrillation, ultrasonic wave fibrillation, mechanical compaction roll fibrillation
Kind.
Preferably, the heating method of heating device is laser heating, infrared heating, Far-infrared Heating, resistance in step (3)
One of silk heating, microwave heating.
Preferably, it is polyethylene, polypropylene, polyamides that fluoropolymer resin, which melts polymer material used in item and thin polymer film,
One or more of amine, Kynoar, polyether-ether-ketone, polyphenylene sulfide, polyimides.
Preferably, polymer material has two kinds of film and filiform, and Filamentous polymer material, which enters in 3D printer handpiece, to be melted
Change extruding polymerization resin and melts item.
Preferably, continuity fiber is one of glass fibre, boron fibre, aramid fiber, basalt fibre, carbon fiber
Or it is several.
The invention has the benefit that fluoropolymer resin is melted item by designed S using 3D printer handpiece by the 1, present invention
Path is attached to the just above of continuity fiber, and the travel speed by adjusting 3D printer handpiece controls spacing between molten item, makes
It obtains after the fluoropolymer resin of heat pressure adhesive step at the middle and upper levels melts item by pressure roller, can join together completely, in lower layer
Thin polymer film will squeeze out in being bonded with the molten hot pressing of the fluoropolymer resin on upper layer if any bubble from the top of continuity fiber,
Therefore unilateral conductivity fibrous thermoplastic enhancing band is prepared using this kind of technique greatly to drop compared to traditional melt impregnation method
The probability that bubble occurs in low band, preferably resolves bubble in band production process and leads to the problem of, so that band is more
Step up close, fiber is evenly distributed, and then enhances band intensity, and dimensional stability is more preferable, good mechanical performance.
2, such technique significantly improves traditional coating technique high viscosity resins in enhancing fibre compared to traditional belt making process
Effect of impregnation between dimension, simplifies processing step, reduces production equipment, so that production equipment scale reduces, reduces simultaneously
Energy consumption in production process.
Detailed description of the invention
Fig. 1 is the preparation process schematic diagram that unilateral conductivity fibrous thermoplastic of the present invention enhances band；
Fig. 2 is that polymer melts a printing path.
In figure: 1- continuity fiber roll；2- continuity fiber；3- fiber-opening apparatus；4- is tensioned roller group；5- press bonding roller；6- is poly-
Close object material film volume；7- polymer material membrane；8- heating device；9- workbench；10-3D printing head；11- hot pressing
Roller；12- is cold-pressed roller group；13- prepreg tape；14- wrap-up；15- fluoropolymer resin melts item.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, and as shown in Figure 1, 2, the present invention provides one
Kind unilateral conductivity fibrous thermoplastic enhances the preparation process of band, mainly comprises the steps that
(1) continuity fiber roll 1 is placed on creel first, it is fine that continuity fiber 2 can be glass fibre, boron
One or more of dimension, aramid fiber, basalt fibre, carbon fiber, continuity fiber 2 are led by the small thread eye on creel
It is guided out, continuity fiber 2 passes through thread eye grillage and becomes band with the arrangement of 3 uniform parallel of fiber-opening apparatus, and continuity fiber 2 passes through again
It is tensioned the tension that roller group 4 applies 100~500N, air fibrillation, ultrasonic wave fibrillation, mechanical compaction roll fibrillation can be used in fiber-opening apparatus 3
One of.
(2) polymer material membrane volume 6 is placed in unwinding motor, the polymer material membrane 7 is through guide roller
Export, and be collected at one with continuity fiber 2, the polymer material membrane 7 is located at one immediately below continuity fiber 2
Then face adjusts height between two press bonding rollers 5, continuity fiber 2 is made to fit together with polymer material membrane 7；
(3) heating device 8 that continuity fiber 2 and polymer material membrane 7 are passed through to 9 region of workbench jointly, adds
The heating method of thermal 8 can be one in laser heating, infrared heating, Far-infrared Heating, Resistant heating, microwave heating
Kind, 10~60 DEG C on the melting point polymer used in polymer material membrane 7 of heating and temperature control, make thin film melt soften but
Do not occur subject to vertical drop；
(4) fluoropolymer resin is melted into item 15 using the 3D printer handpiece 10 on 3D printer and is printed upon continuity fiber 2
The one side of surface, polymer resin material used are filiform, and Filamentous polymer material, which enters in 3D printer handpiece 10, to be melted
Change extruding polymerization resin and melt item 15, the heating temperature of 3D printer handpiece 10 is 180~380 DEG C, and actual temp can be according to selected
Depending on polymer resin material；3D printer adjusts control 3D printer handpiece by slide bar guide rail and 3 motors can edge
It is mobile around the parallel plane of band, and adjustable upper-lower height.By good program prepared in advance, input is continuous
Program calculates the travel path of 3D printer handpiece 10 automatically after the travel speed of property fiber travel speed and 3D printer handpiece 10,
It is S-type in the upper surface of continuity fiber 2 that the fluoropolymer resin for printing 3D printer handpiece 10 melts 15 track of item.3D is beaten
Print 10 0.1~5m/min of travel rate of head.
(5) fluoropolymer resin of printing is melted item 15 to press with underlying polymer film 7 by upper and lower hot-pressing roller 11, is obtained
To prepreg tape, the surface temperature control of the upper and lower hot-pressing roller 11 is 20 below the melting point polymer used in thin polymer film 7~
60 DEG C, overlayer polymer resin, which melts item 15 and polymer material used in underlying polymer film 7, to be polyethylene, polypropylene, gathers
One or more of amide, Kynoar, polyether-ether-ketone, polyphenylene sulfide, polyimides.
(6) prepreg tape 13 obtained by step (5) is imported into the cooling cooling of roller group 12, leads to condensed water in the cooling roller group 12
The roller group spacing up and down that cooling roller group 12 is adjusted as cooling medium, while cooling, controls prepreg tape thickness of strip, chill roll
In 1~5MPa, finally obtaining enhances band with a thickness of the unilateral conductivity fibrous thermoplastic of 0.1~5mm for group 12 pressure control；
(7) the unilateral conductivity fibrous thermoplastic made is enhanced by band band by traction roller and is wound into wrap-up 14
On.
Embodiment 1
It is high density polyethylene that fluoropolymer resin, which melts polymer material used in item and thin polymer film, and continuity is fine
Dimension is glass fibre.Fiber content 70%, thickness of strip 0.25mm, strip width 50mm.
Glass fibre volume enters fiber-opening apparatus through over-discharge is fine later, using air fibrillation, 0.5~0.8MPa of air pressure.
Idler roller impregnates fiber together into overlay film and printing with film adhered through press bonding roller to after the tension of fiber application 100N
Region, infrared heating, make film surface melting softening by 170 DEG C of temperature.HDPE is melted item by 3D printer handpiece to be beaten according to the path Fig. 2
It is imprinted on strip surface.110 DEG C of hot pressing roll surface temperature, fluoropolymer resin is melted into item and underlying polymer film laminating.3D printing
Head travel rate 5m/min, adjusts cold pressing roller up-down rollers height, and cold pressing sizing finally obtains the increasing of unilateral conductivity glass fibre
Strong high density polyethylene (HDPE) band.
Web tension intensity 830MPa, stretch modulus 35.4GPa, elongation at break 2.52%, bending are obtained by test
Intensity 465MPa, bending modulus 34.7GPa.
Embodiment 2
It is polyphenylene thioether PPS that fluoropolymer resin, which melts polymer material used in item and thin polymer film, and fiber is carbon fiber.
Fiber content is 65%, thickness of strip 0.15mm, strip width 100mm.
Carbon fiber volume enters fiber-opening apparatus through over-discharge is fine later, using air fibrillation, 0.4~0.6MPa of air pressure.?
Tight roller makes fiber with film adhered together into overlay film and printing Dilvar zone to after the tension of fiber application 100N through press bonding roller
Domain, infrared heating, make film surface melting softening by 300 DEG C of temperature.PPS is melted item and is printed upon according to the path Fig. 2 by 3D printer handpiece
Strip surface.260 DEG C of hot pressing roll surface temperature, by polymer melt and underlying polymer film laminating.Printing head is advanced fast
Rate 3m/min, adjusts cold pressing roller up-down rollers height, and cold pressing sizing finally obtains unilateral conductivity fibre reinforced polyphenylene sulfide
Band.
Web tension intensity 2400MPa is obtained by test, and stretch modulus 132GPa, elongation at break 1.6%, bending is by force
Spend 1200MPa, bending modulus 124.0GPa.
This hair can be understood and applied the above description of the embodiments is intended to facilitate those skilled in the art
It is bright.Person skilled in the art obviously can make various modifications, and described herein easily to these embodiments
General Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to implementations here
Example, those skilled in the art's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be
Within protection scope of the present invention.
Claims (7)
1. the preparation process that a kind of unilateral conductivity fibrous thermoplastic enhances band, it is characterised in that: the following steps are included:
(1) fine and fibrillation is put to handle:
Continuity fiber roll is placed on creel, continuity fiber draws export by the small thread eye on creel, described
Continuity fiber pass through thread eye grillage and fiber-opening apparatus uniform parallel arrangement become band, the continuity fiber again through opens
Tight roller group applies the tension of 100~500N；
(2) film roll unreels:
Polymer material membrane volume is placed in unwinding motor, the polymer material membrane is exported through guide roller, and with
Continuity fiber is collected at one, and the polymer material membrane is located at the one side immediately below continuity fiber, is then adjusted
Height, makes continuity fiber fit together with polymer material membrane between two press bonding rollers；
(3) heat:
Continuity fiber and polymer material membrane are passed through to the heating device in workbench region jointly, heating and temperature control exists
10~60 DEG C on melting point polymer used in polymer material membrane, softens thin film melt but do not occur subject to vertical drop；
(4) printing dipping:
Fluoropolymer resin is melted into the one side that item is printed upon the surface of continuity fiber using the 3D printer handpiece on 3D printer,
The heating temperature of the 3D printer handpiece be 180~380 DEG C, actual temp can according to selected polymer resin material and
Fixed, the 3D printer adjusts control 3D printer handpiece with 3 motors by slide bar guide rail can be before the parallel plane of band
Afterwards, move left and right, and adjustable upper-lower height, by good program prepared in advance, input continuity fiber travel speed and
Program calculates the travel path of 3D printer handpiece automatically after the travel speed of 3D printer handpiece, finally 3D printer handpiece is beaten
It is S-type in the upper surface of continuity fiber that the fluoropolymer resin of print melts a track；
(5) heat pressure adhesive:
The overlayer polymer resin of printing is melted into item and underlying polymer film by upper and lower hot pressing roll press, obtains prepreg tape,
The surface temperature control of the upper and lower hot-pressing roller melts melting point polymer used in item and thin polymer film or less in fluoropolymer resin
20~60 DEG C；
(6) cold pressing setting:
It is cooling that prepreg tape obtained by step (5) is imported into cooling roller group, condensed water is led in the cooling roller group as cooling medium,
The roller group spacing up and down that cooling roller group is adjusted while cooling, controls prepreg tape thickness of strip, the cooling roller group pressure control
For system in 1~5MPa, finally obtaining enhances band with a thickness of the unilateral conductivity fibrous thermoplastic of 0.1~5mm；
(7) it winds:
The unilateral conductivity fibrous thermoplastic made is enhanced band band by traction roller to be wound on wrap-up.
2. the preparation process that unilateral conductivity fibrous thermoplastic according to claim 1 enhances band, it is characterised in that: described
0.1~5m/min of 3D printer handpiece travel rate.
3. the preparation process that unilateral conductivity fibrous thermoplastic according to claim 1 or 2 enhances band, it is characterised in that:
Fiber-opening apparatus in the step (1) uses one of air fibrillation, ultrasonic wave fibrillation, mechanical compaction roll fibrillation.
4. the preparation process that unilateral conductivity fibrous thermoplastic according to claim 1 or 2 enhances band, it is characterised in that:
The heating method of heating device is laser heating, infrared heating, Far-infrared Heating, Resistant heating, microwave in the step (3)
One of heating.
5. the preparation process that unilateral conductivity fibrous thermoplastic according to claim 1 or 2 enhances band, it is characterised in that:
It is polyethylene, polypropylene, polyamide, polyvinylidene fluoride that the fluoropolymer resin, which melts polymer material used in item and thin polymer film,
One or more of alkene, polyether-ether-ketone, polyphenylene sulfide, polyimides.
6. the preparation process that unilateral conductivity fibrous thermoplastic according to claim 5 enhances band, it is characterised in that: described
Polymer material have film and two kinds Filamentous, Filamentous polymer material enters thawing extruded polymer tree in 3D printer handpiece
Rouge melts item.
7. the preparation process that unilateral conductivity fibrous thermoplastic according to claim 1 or 2 enhances band, it is characterised in that:
Continuity fiber is one or more of glass fibre, boron fibre, aramid fiber, basalt fibre, carbon fiber.
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| CN201710464765.4A CN107283861B (en) | 2017-06-19 | 2017-06-19 | A kind of unilateral conductivity fibrous thermoplastic enhances the preparation process of band |
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| CN201710464765.4A CN107283861B (en) | 2017-06-19 | 2017-06-19 | A kind of unilateral conductivity fibrous thermoplastic enhances the preparation process of band |
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| CN107283861B true CN107283861B (en) | 2019-06-04 |
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| CN111113906A (en) * | 2019-12-03 | 2020-05-08 | 安徽骄阳软门有限责任公司 | Processing device for film-coated metal gauze |
| CN113462145A (en) * | 2021-07-12 | 2021-10-01 | 洛阳双瑞橡塑科技有限公司 | Fiber-reinforced polyurethane wood-like material and forming method thereof |
| CN116277923B (en) * | 2023-05-22 | 2023-07-21 | 山东森荣新材料股份有限公司 | Method for continuously manufacturing polytetrafluoroethylene film in 3D printing industrialization |
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| CN102218828A (en) * | 2011-05-27 | 2011-10-19 | 常州市宏发纵横新材料科技股份有限公司 | Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material |
| CN103660308B (en) * | 2012-08-30 | 2018-02-27 | 上海杰事杰新材料(集团)股份有限公司 | Continuous-filament woven fabric enhancing thermoplas tic resin composite and preparation method thereof |
| CN104494170B (en) * | 2015-01-14 | 2016-08-17 | 天津海天长丰科技开发有限公司 | The production line of a kind of thermoplastic composite prepreg one-way tape and production method |
| CN104943196B (en) * | 2015-07-02 | 2018-04-17 | 山东鸿石新材料科技有限公司 | The production equipment of continuous fiber thermoplastic prepreg |
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