CN107904738A - Large-tow carbon fiber spreads and curing integrated technology of preparing - Google Patents
Large-tow carbon fiber spreads and curing integrated technology of preparing Download PDFInfo
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- CN107904738A CN107904738A CN201711101073.XA CN201711101073A CN107904738A CN 107904738 A CN107904738 A CN 107904738A CN 201711101073 A CN201711101073 A CN 201711101073A CN 107904738 A CN107904738 A CN 107904738A
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/18—Separating or spreading
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
- D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B1/00—Applying liquids, gases or vapours onto textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing or impregnating
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
Abstract
The present invention provides a kind of large-tow carbon fiber spread with curing integrated preparation process, comprise the following steps：Carbon fibre precursor is precisely spacing, with ensure spread when carbon fibre precursor to neutrality；Precisely it is spacing after carbon fibre precursor is spreaded, to carbon fibre precursor spread completion before to carbon fibre precursor addition couplant ooze profit；It is heating and curing to oozing the carbon fibre precursor after moistening by drawing heated roller；Winding；And provide Preparation equipment.The present invention closes to spread using special-shaped multiple roll with angle roller group oozes profit and is heating and curing integral process, spread rear carbon fiber and substantially broaden thinning arrangement uniformly, efficiently solving big tow precursor, effect is bad to be caused to ooze the problem of lubricant nature is poor due to spreading, and bent after overcoming precursor adhesion and broken yarn during large-tow carbon fiber spreads and spreading is bent and wing flapping inconsistent phenomenon.
Description
Technical field
The present invention relates to large-tow carbon fiber to spread and curing integrated technology of preparing.
Background technology
Carbon fiber and its composite material have a series of excellent property such as high specific strength, high ratio modulus, endurance, high temperature resistant
Can, its demand is continuously increased in the industry-by-industry of national economy, application is more and more wider.Price is to restrict carbon fiber and its compound
An important factor for Materials are applied, the company for producing carbon fiber are all being directed to reducing the price of carbon fibre precursor, precursor
Price accounts for 60% or so of carbon fiber and its composite material cost.Relative to small tow carbon fiber (1K, 3K, 6K) precursor, big silk
There is beam carbon fiber (more than 48K) precursor performance not reduce, and not influence to apply in general industry field, and cost, price are then
The advantages that being greatly reduced.But there is also many technical issues that need to address, master in application for large-tow carbon fiber precursor
It is embodied in：The aggregation of large-tow carbon fiber precursor, spread that effect is bad to cause wellability poor, and resin can not be reached inside tow,
Carbon fibre precursor is uneven with resin distribution, easily produces the defects of hole is produced between resin-rich layer or monofilament；Strand diameters are big
Easily occur bent in the wrong, laying angular misalignment and uneven thickness possibility in forming process；Big tow precursor is in the process of spreading
In often there is adhesion and broken yarn phenomenon.The intensity and rigidity of carbon fiber and composite material can be so influenced, material property obtains not
To effective conversion, cause properties of product unstable.
At present, large-tow carbon fiber spreads technology by the way that tow is widened, and flattens, can only use costliness small originally to manufacture
The composite material that tow carbon fiber (such as 1K, 3K) could manufacture, so as to reduce the cost of carbon fibre composite.Due to big tow
Carbon fiber is the description of materials succeeded in developing in recent years, and the special equipment that spreads of the based carbon fiber is in the market vacancy.Traditional
Drawing method is that current large-tow carbon fiber spreads most common method.This method mainly passes through one group of carry-over pinch rolls, passes through control
Carbon fiber processed is realized by the tension force of carry-over pinch rolls and spreaded.The drawbacks of this method：(1) large-tow carbon fiber easily produce damage,
Broken yarn, is damaged fibre property；(2) large-tow carbon fiber broadening width is smaller, and became uneven is even in the width direction；(3) spread
Large-tow carbon fiber resin afterwards is difficult to infiltrate.
The content of the invention
To solve the problem that large-tow carbon fiber is difficult to spread, the present invention is closed with angle roller group using special-shaped multiple roll and spreaded --
Ooze profit -- be heating and curing integral process, spreads rear carbon fiber and substantially broadens thinning arrangement uniformly, efficiently solves big tow
Due to spreading, effect is bad to be caused to ooze the problem of lubricant nature is poor precursor；Tow is bent after spreading without song and wing flapping inconsistent phenomenon, makes
With when spreading rear carbon fiber and being weaved, fibre bundle is orientated directly in the fabric, and flexing is few, and intertwined point is few, and yarn utilization rate is high, knits
Thing is lighter and thinner, so that composite element has the characteristic such as lightweight, high-strength, high mould；By control spread when tension force with
And add couplant to be protected in time, solve the precursor during spreading and adhesion and broken yarn phenomenon occur.
To achieve the above object, the technical solution adopted by the present invention is：
Large-tow carbon fiber spread with curing integrated preparation process, comprise the following steps：
(1) it is carbon fibre precursor is precisely spacing, with ensure spread when carbon fibre precursor to neutrality；
(2) precisely it is spacing after carbon fibre precursor is spreaded, detailed process is：Plain-barreled roll is passed sequentially through to spread in advance, once
Convex roller spreads, once recessed roller shaping, angle roller spreads, secondary convex roller spreads, secondary recessed roller shaping, plain-barreled roll spread, complete to carbon
Fiber precursor spreads；
(3) profit is oozed to carbon fibre precursor addition couplant before completion is spreaded to carbon fibre precursor；
(4) it is heating and curing to oozing the carbon fibre precursor after moistening by drawing heated roller；
(5) wind.
Preferably, carbon fibre precursor is precisely spacing including pre- spacing, thick spacing, smart spacing, whole limit in the step (1)
Position, is realized precisely spacing.
Preferably, in the step (3) after secondary recessed roller shaping, plain-barreled roll adds couplant before spreading to carbon fibre precursor
Carry out oozing profit, the couplant is added on carbon fibre precursor by diversion mode, and the couplant is being added to carbon fiber original
Need to heat when on silk, temperature is 50~80 DEG C.
Preferably, carbon fibre precursor heats admittedly the carbon fibre precursor after oozing profit through three heating rollers in the step (4)
Change.
Preferably, heating roller provides heat by the conduction oil of heating in the step (4), and the temperature of the conduction oil is
80~120 DEG C.
Large-tow carbon fiber spread with curing integrated Preparation equipment, including：
Rack；
Carbon fiber guidance system, the carbon fiber guidance system include pre- limit roller, thick limit roller, the first smart position-limited wheel,
Second smart position-limited wheel, the 3rd smart position-limited wheel, whole limit roller, carbon fibre precursor are realized precisely spacing by above device successively；
Carbon fiber spreads system, the carbon fiber spread system include it is flat spread roller, angle spreads roller, the convex roller, recessed of spreading
Roller is spreaded, particularly carbon fibre precursor flat spread roller, second flat spread roller, convex spread roller, the 3rd flat spreads through first successively
Roller, it is recessed spread roller, angle spreads roller, second it is convex spread roller, roller spreads in Siping City, second recessed spread roller, the 5th flat spreads roller,
Six it is flat spread roller, realize spreading for carbon fibre precursor；
Couplant add-on system, the couplant add-on system be located at second it is recessed spread roller after, the 5th it is flat spread it is right before roller
Carbon fibre precursor addition couplant carries out oozing profit；
The system that is heating and curing is drawn, it is described to draw the system that is heating and curing by heating roller to the carbon after couplant oozes profit
Fiber precursor is heating and curing；
Material-receiving system, the material-receiving system by spread, ooze profit, be heating and curing after carbon fibre precursor be wound into a roll；
Wherein, the rack spreads system, couplant add-on system, traction equipped with carbon fiber guidance system, carbon fiber
The system that is heating and curing and material-receiving system, the Preparation equipment are to integrate the equipment for spreading, oozing profit, being heating and curing.
Preferably, the quantity that the angle spreads roller is two, and is continuously set.
Preferably, the couplant add-on system includes guiding device, and the guiding device is by peristaltic pump to carbon fiber
Precursor adds couplant, and the peristaltic pump connection is placed on the couplant storage device in constant water bath box.
Preferably, the heating roller includes three heating rollers, is respectively the first heating roller, the second heating roller, the 3rd heating
Roller, first heating roller are connected by heating roller drive arrangement with decelerator, and are distinguished by heating roller drive arrangement
The second heating roller and the 3rd heating roller is driven to rotate.
Preferably, the material-receiving system includes winding coiled hair, and the winding coiled hair is connected with torque motor, passes through torque
Motor drives winding coiled hair to rotate, to carbon fibre precursor on winding coiled hair.
Compared with prior art, beneficial effects of the present invention are：
1st, the present invention utilizes varying number on the basis of accurate calculating spreads required tension force, spreads all directions stress
Plain-barreled roll, convex roller, recessed roller, angle roller group are closed, and effectively increase large-tow carbon fiber spreads effect, are solved and existing are spreaded technology
Large-tow carbon fiber aggregation, uneven, the non-uniform drawback of resin infiltration of arranging.
2nd, the present invention using it is multiple spread roller and angle roller group and close large-tow carbon fiber is spreaded, by silk thread on roller
Force analysis, show the tension force by controlling silk thread on roller, it is possible to prevente effectively from the fracture of silk thread, and by spreading
Size is added when being near completion, effective protection aquiclude is formed in carbon fiber surface, the prior art is solved and spreads middle carbon fiber damage
Wound, disconnected fine problem.
3rd, large-tow carbon fiber using the present invention is spreaded bends with curing integrated preparation process, the silk thread after spreading without song
With wing flapping inconsistent phenomenon, using when spreading rear carbon fiber and being weaved, fibre bundle is orientated directly in the fabric, and flexing is few, is interweaved
Point is few, and yarn utilization rate is high, and fabric is lighter and thinner, so that composite element has the characteristic such as lightweight, high-strength, high mould.
Brief description of the drawings
Fig. 1 is spreaded and curing integrated preparation technology flow chart for large-tow carbon fiber of the present invention；
Fig. 2 being integrated Preparation equipment schematic diagrames；
Silk thread infinitesimal force analysis schematic diagram in Fig. 3 being integrated preparation process；
Roller force analysis schematic diagram is spreaded in Fig. 4 being integrated preparation process；
Heating roller force analysis schematic diagram in Fig. 5 being integrated preparation process；
Wrap angle regulator structure diagram in Fig. 6 being integrated Preparation equipments；
Fig. 7 being integrated Preparation equipment crowned roll structure diagrams；
Force analysis schematic diagram of the silk thread on convex roller in Fig. 8 being integrated preparation process；
Fig. 9 being integrated Preparation equipment concave roll structure schematic diagrames；
Force analysis schematic diagram of the silk thread on recessed roller in Figure 10 being integrated preparation process；
Force analysis schematic diagram of the silk thread on angle roller in Figure 11 being integrated preparation process；
In figure, 1- lower margins, the short lathe beds of 2-, 3- carbon fibre precursors, the pre- limit rollers of 4-, the thick limit rollers of 5-, the essence of 6- first is spacing
Wheel, the smart position-limited wheels of 7- second, the smart position-limited wheels of 8- the 3rd, 9- end limit rollers, 10- first is flat to spread roller, and 11- second is flat to spread roller,
12- is convex to spread roller, and 13- the 3rd is flat to spread roller, and 14- is recessed to spread roller, and 15- angles spread roller, and 16- peristaltic pumps, 17- second is convex to spread
Roller, 18- hoses, 19- second is recessed to spread roller, and 20- guiding devices, 21- the 6th is flat to spread roller, the first heating rollers of 22-, 23- second
Heating roller, the 3rd heating rollers of 24-, 25- winding coiled hairs, 26- heating roller drive arrangements, 27- decelerators, the 5th flat width of 28-
Roller is opened up, 29- constant water bath box, spread roller for 30- Siping City, 31- long lathe beds, 32- torque motors, 33- stents, and 34- adjusts spiral shell
Mother, 35- spread roller, 36- supporting plates, 37- carbon fibre tows, 38- angle rollers.
Embodiment
Carbon fibre precursor is alternatively referred to as carbon fibre tow in the present invention, individual carbon fibers precursor can be described as carbon fiber silk thread or
Silk thread.
With reference to embodiment, the present invention is described in further detail.
Embodiment 1
Large-tow carbon fiber spread with curing integrated preparation process, comprise the following steps：
(1) it is carbon fibre precursor is precisely spacing, with ensure spread when carbon fibre precursor to neutrality；
(2) precisely it is spacing after carbon fibre precursor is spreaded, mainly spread the knot spreaded with angle by multiple abnormity
Spreading for large-tow carbon fiber is realized in conjunction, and detailed process is：Pass sequentially through plain-barreled roll spread in advance, once convex roller spread, once recessed roller
Shaping, angle roller are spreaded, secondary convex roller spreads, secondary recessed roller shaping, plain-barreled roll spread, and complete to spread carbon fibre precursor；
(3) profit is oozed to carbon fibre precursor addition couplant before completion is spreaded to carbon fibre precursor；
(4) it is heating and curing to oozing the carbon fibre precursor after moistening by drawing heated roller；
(5) wind.
In the present embodiment, carbon fibre precursor is precisely spacing including pre- spacing, thick spacing, smart spacing, whole in the step (1)
It is spacing, realize precisely spacing.
In the present embodiment, in the step (3) after secondary recessed roller shaping, plain-barreled roll adds coupling before spreading to carbon fibre precursor
Mixture carries out oozing profit, and the couplant is added on carbon fibre precursor by diversion mode.The couplant is being added to carbon fibre
Need to heat when on dimension precursor, temperature is 50~80 DEG C, is preferably 60~70 DEG C.
In the present embodiment, carbon fibre precursor adds the carbon fibre precursor after oozing profit through three heating rollers in the step (4)
Heat cure.
In the present embodiment, heating roller provides heat, the temperature of the conduction oil by the conduction oil of heating in the step (4)
Spend for 80~120 DEG C, be preferably 100~120 DEG C.
Embodiment 2
Refering to Fig. 2, large-tow carbon fiber spread with curing integrated Preparation equipment, including：Rack, carbon fiber guiding are to being
System, carbon fiber spread system, couplant add-on system, draw be heating and curing system and material-receiving system, and the rack is equipped with carbon
Fibre guide system, carbon fiber spread system, couplant add-on system, draw be heating and curing system and material-receiving system, the system
Standby equipment is to integrate the equipment for spreading, oozing profit, being heating and curing.
Wherein, the rack includes short lathe bed 2 and long lathe bed 31, and it is (long that the short lathe bed 2 and long lathe bed 31 are equipped with lower margin 1
The lower margin of lathe bed 31 is not shown in figure).
The carbon fiber guidance system is precisely spacing by carbon fibre precursor progress, specifically includes pre- limit roller 4, thick limit roller
5th, the first smart the 7, the 3rd smart position-limited wheel 8 of the essence of position-limited wheel 6, second position-limited wheel, whole limit roller 9.By carbon fiber guidance system by carbon
Fiber precursor accurate limit, carbon fibre tow to neutrality during ensureing follow-up spread.
The carbon fiber spread system include it is flat spread roller, angle spreads roller, it is convex spread roller, it is recessed spread roller, particularly
Carbon fibre precursor flat spreads that roller 10, second is flat to spread roller 11, convex spread that roller the 12, the 3rd is flat to spread roller 13, recessed width through first successively
Exhibition roller 14, angle spread roller 15, second it is convex spread roller 17, Siping City spreads that roller 30, second is recessed to spread that roller the 19, the 5th is flat to spread roller
28th, the 6th flat roller 21 is spreaded.Wherein, described first flat to spread the flat effect for spreading roller 11 of roller 10 and second be to spread roller using flat
Carbon fibre precursor is spreaded in advance, the convex roller 12 that spreads is first group of convex roller, and carbon fibre precursor is slightly spreaded, and the recessed roller 14 that spreads is shaping
Roller, angle are spreaded roller 15 and are spreaded for carbon fibre precursor essence, and the convex roller 17 that spreads is second group of convex roller, are spreaded for carbon fibre precursor essence,
The second recessed roller 19 that spreads is that the carbon fibre precursor shaping of roller 17 is spreaded through excess convexity, then flat spreads that roller 28 and the 6th is flat to spread through the 5th
The completion carbon fibre precursor of roller 21 spreads operation.Roller 12 is spreaded in addition, convex and recessed spread flat spreads roller between roller 14 by the 3rd
13, and second convex spread that roller 17 and second is recessed to spread the reason for spreading roller 30 by Siping City, so set between roller 19 and be
Pre-shaped can be carried out to the carbon fibre precursor that roller is spreaded through excess convexity using the flat roller that spreads, mitigate the recessed pressure for spreading roller shaping,
It it also avoid carbon fibre precursor to spread roller without flat and directly spread roller shaping through recessed and cause overtension, influence carbon fibre precursor
Quality.
In the present embodiment, the quantity that the angle spreads roller 15 is two, and is continuously set.
The couplant add-on system be carbon fibre precursor by second it is recessed spread roller 19 after, the 5th flat spreads 28 He of roller
6th flat spread adds couplant before roller 21 to carbon fibre precursor.Specifically include guiding device 20, guiding device 20 is to carbon fiber
Precursor adds couplant, and the guiding device 20 is connected by hose 18 with peristaltic pump 16, and peristaltic pump 16 connects couplant storage
Device, couplant storage device are placed in constant water bath box 29, be equipped with constant water bath box 29 electric heating tube to couplant into
Row heating, while thermocouple detection device is equipped with constant water bath box 29, thermocouple detection device connection controller, passes through control
Device controls electric heating tube, further controls the heating-up temperature in constant water bath box 29.
The traction system of being heating and curing is heating and curing to the carbon fibre precursor after couplant oozes profit, specifically
Including the first heating roller 22, the second heating roller 23, the 3rd heating roller 24, first heating roller 22 is by heating roller drive arrangement
26 are connected with decelerator 27, and decelerator 27 drives the first heating roller 22 to rotate, and first heating roller 22 is by adding
Hot-rolling transmission device 26 drives the second heating roller 23 and the 3rd heating roller 24 to rotate respectively.Wherein, decelerator 27 passes through change
Frequency device is connected with controller, controls the first heating roller 22, the second heating roller 23, the 3rd heating roller 24 to rotate by controller.
In the present embodiment, the first heating roller 22, the second heating roller 23, be equipped with conduction oil, conduction oil in the 3rd heating roller 24
Heated by electric heating tube, respectively in the first heating roller 22, the second heating roller 23,24 internal circulation flow of the 3rd heating roller.
Thermocouple detection device is equipped with heat-conducting oil heating case, and is connected with controller, electric heating tube is controlled to heat conduction by controller
Oil heating.Wherein, each heating roller connects a heat-conducting oil heating case, controls the temperature of heating roller respectively by controlling.
The material-receiving system be by spread, ooze profit, be heating and curing after carbon fibre precursor be wound into a roll, specifically include winding
Coiled hair 25, the winding coiled hair 25 are connected with torque motor 32, drive winding coiled hair 25 to rotate by torque motor 32, right
Carbon fibre precursor is on winding coiled hair 25.Wherein, torque motor 32 is connected by frequency converter with controller, passes through control
The speed of device control winding.
The operation principle of the equipment is：First in rack large-tow carbon fiber precursor first pass through limiting device carry out it is spacing,
With ensure spread when carbon fibre tow to neutrality；Then put down by one group and spread roller and spreaded in advance, adjust carbon fibre tow
Distributional pattern on roller, then the convex roller by adjusting cornerite are slightly spreaded, by the recessed roller of one group of adjustable angle-wrapping to
The carbon fibre tow spreaded carries out shaping, prevents the cracking phenomenon of carbon fibre tow, and carrying out essence by one group of angle roller spreads,
Make carbon fibre tow thickness uniform, carry out oozing profit easy to couplant；Then by being pulled into three heating rollers, three heating rollers
Temperature can be separately adjustable, hauling speed can be separately adjustable；Using can the winding coiled hair of each speed regulation wound.
In the present embodiment, tension analysis is as follows suffered by carbon fibre tow in two pairs of rollers.
Carbon fibre tow pass sequentially through it is multiple spread roller, carbon fibre tow and spread roller and can be reduced to silk thread by one
Cylindrical surface is simultaneously tangent with cylindrical surface, and silk thread has certain cornerite with cylindrical surface.Infinitesimal silk thread is taken to carry out force analysis, such as Fig. 3 institutes
Show.
Ignore dead weight and the inertia force of silk thread, the friction coefficient between silk thread and cylindrical surface is μ, and frictional force is f=μ dN,
The dynamic balance relation of infinitesimal silk thread section ds can be obtained：
Due toSoFormula (1-1) can be reduced to formula (1-2)：
After ignoring high-order term dTd θ ≈ 0, formula (1-3) can be exchanged into：
Solve equation and be finally：
T2=T1e-μα
That is, T1=T2eμαFormula (1-5)
For above-mentioned formula (1-1) into (1-5), μ represents the friction coefficient between silk thread and roll surface；α is cornerite；F is frictional force；T
For tension force suffered by silk thread；N is normal pressure suffered by silk thread.
This equipment spreads roller using 12 altogether, uniformly to improve the tension force of carbon fibre tow by 12 roller tensioners,
As shown in figure 4, total tension is after 12 rollers：
In formula (1-6)：
TAlways--- final tension force (N)；
TJust--- initial tension (N)；
μ1--- carbon fibre tow and spread the friction coefficient between roller；
αAlways--- total cornerite of 12 rollers.
The pulling force that traction motor produces carbon fibre tow is TTorque(N), as shown in figure 5, carbon fibre tow passes through 3
The tractive force that heating roller produces is TLead(N) it is：
In formula (1-7)：
μ2--- the friction coefficient between carbon fibre tow and heating roller；
αHeat--- total cornerite of 3 heating rollers.
Cause the device to work normally, it is necessary to meet：
TLead＞ TAlways
That is,
As can be seen that adjusting T by varying cornerite size from formula (1-8)Always, it is ensured that equipment normal operation, this
Equipment, which has altogether to set, can adjust the device of cornerite size at 4, as shown in figure 4, i.e. two it is convex spread roller and two it is recessed spread roller,
Concrete structure is as shown in Figure 6.
It is threadedly attached in from fig. 6 it can be seen that spreading roller 35 in adjusting nut 34, adjusting nut 34 is installed on machine
In the elongated slot of frame 33, outer six side on roller 35 is spreaded using spanner rotation, can easily adjust the size of cornerite.
When being moved during carbon fibre tow spreads system in multiple roll, due to being acted on be subject to tension force, carbon fibre tow is set to become
In to the movement of roller both ends is spreaded, carbon fibre tow is thinning by thickness, thus achievees the purpose that thin layer.Mould is derived according to Wilson
Type, two spreading widths for spreading carbon fibre tow between roller are：
In formula (1-9)：
Spreading width of ω --- the carbon fibre tow between two rollers；
A--- carbon fibre tow cross-sectional areas；
Two roller center lines of H--- are vertical direction difference in height (related with cornerite).
Can be seen that increase H from Wilson models can effectively increase and spread width.But this needs increase to spread
The quantity of roller or the size of the total cornerite of increase, no matter using any method, can all cause final overtension, one side is unfavorable
In the normal operation of equipment, carbon fibre tow on the other hand can be damaged.In order to solve this problem, this equipment spreads roller using flat
Spread in advance, based on convex, recessed profiled roller, supplemented by angle roller, be subject to the scheme spreaded of couplant protection.
In the present embodiment, it is convex, recessed spread carbon fibre tow on roller (convex roller, recessed roller) force analysis it is as follows.
According to such scheme, the contact surface of carbon fibre tow and roller should be a convex song on fiber width direction
Line, it is contemplated that the difficulty or ease of processing, are reduced to one section of circular arc, as shown in Figure 7 by this curve.
Stress of the carbon fibre tow on convex roller is divided into two kinds of situations according to the location of silk thread, as shown in Figure 8.
Orlop silk thread is contacted with convex roller, is acted on altogether be subject to 3 kinds of power, is respectively：Normal direction branch of the convex roller arc surface to it
Holding force N, for upper strata silk thread to its pressure F, which is the component of thread tension between two rollers, and power F can be analyzed to along normal direction and cuts again
To component F1With F2；Outer filament resistance (the power very little, ignore), arc surface, to its frictional resistance f, are somebody's turn to do with upper strata silk thread
Tangential direction of the force direction along silk thread present position.Dynamic balance relation can be obtained according to analysis：
Equation is arranged to obtain：
Middle level silk thread and other thread contacts, are also acted on be subject to 3 kinds of power, are respectively：Normal direction branch of lower floor's silk thread to it
Holding force N', for upper strata silk thread to its pressure F', which is the component of thread tension between two rollers, power F' can be analyzed to again along normal direction and
Tangential component F1' and F2', outer filament resistance (the power very little, ignore), upper and lower layer silk thread, should to its frictional resistance f'
Tangential direction of the force direction along silk thread present position.Dynamic balance relation can be obtained according to analysis：
F ≈ F' herein, N ≈ N'.Since the friction coefficient between lower floor's silk thread and metal is larger, relative to middle level silk thread
The frictional force being subject to, frictional force that lower floor's silk thread is subject to is much greater, and (tangential force that lower floor's silk thread is outwards spreaded is smaller very
Most zero).Therefore, when spreading, lower floor's silk thread is kept essentially stationary, and middle level silk thread be subject to tangentially power it is larger, be allowed to
The trend extended to carbon fibre tow width.That is, when spreading, mainly middle level silk thread is moved to both sides, is reached
To the purpose spreaded.
Carbon fibre tow is spreaded using convex roller, effect is clearly.But asked using only convex roller there is also following
Topic：The phenomenon of intermediate thin both sides thickness occurs in carbon fibre tow after spreading, that is, the uniformity spreaded is bad, serious meeting
There is the phenomenon of cracking among carbon fibre tow；If carbon fibre tow is continuously across several convex rollers, the silk thread ratio of middle part
The distance of the silk thread movement of edge will more greatly, this can cause the damage of silk thread, so in a device using recessed roller and convex roller
The method of cooperation solves the cracking of carbon fibre tow and damage problem.
According to such scheme, it is downward that the contact surface of carbon fibre tow and roller should be one on carbon fibre tow width
Recessed curve, it is contemplated that the difficulty or ease of processing, are reduced to one section of circular arc, as shown in Figure 9 by this curve.
Stress of the carbon fibre tow on recessed roller is changed with Impact direction, as shown in Figure 10.
Orlop silk thread is contacted with recessed roller, since friction coefficient is bigger, so lower floor's silk thread is not moved.Median caudal filament
Line is acted on be subject to 3 kinds of power, is normal direction holding power N " of lower floor's silk thread to it respectively；Upper strata silk thread is to its pressure F ", the power
It is the component of thread tension between two rollers, power F " and can be analyzed to along normal direction and tangential component F1" and F2”；Internal silk thread resistance with
Make a concerted effort f of the upper and lower layer silk thread to its frictional resistanceClose, tangential direction of the force direction along silk thread present position.
When silk thread is contacted with concave surface, silk thread is subject to effect that is downward, inwardly making a concerted effort, and carbon fibre tow has what is inwardly moved
Trend.But as carbon fibre tow inwardly moves, the resistance of internal silk thread will become larger therewith, cause fCloseBecome larger, Zhi Daoda
To a kind of equilibrium state.This convex, recessed roller is applied in combination when can effectively solve carbon fibre tow expansion, what centre was cracked and damaged
Situation.The advantage of this combination is it will be evident that but to rear carbon fibre tow intermediate thin is spreaded in solution, the uniformity of both sides thickness is asked
Topic, also need using angle spread roller to carbon fibre tow carry out essence spread.
In the present embodiment, it is as follows that angle spreads carbon fibre tow force analysis on roller.
Employ convex, recessed roller in this equipment slightly to be spreaded, angle is spreaded roller progress essence and spreaded, and preferably resolves and spreads
The situation of carbon fibre tow uneven thickness afterwards, as shown in figure 11.
Carbon fibre tow 37 after excess convexity, recessed roller spread is between angle roller 38 and supporting plate 36 by by angle roller 38
It is placed on and spreads the both sides (intermediate thin, both sides thick) of rear carbon fibre tow 37 and supporting plate 36 and form an angle α, and passes through angle roller
38 pairs of carbon fibre tows 37 apply certain pressure N, and frictional force N is produced between angle roller 38 and carbon fibre tow 37f=N μ (μ
For the friction coefficient between carbon fibre tow and angle roller).
Nf2=NfSin α formulas (1-12)
NfIt can be analyzed to Nf1And Nf2Two component, wherein component Nf2Act on carbon fibre tow and spread direction, to carbon fiber
Tow further spreads, and situation in uneven thickness is spreaded to solve convex, recessed roller.In addition, can be according to actual conditions to pressure N
It is adjusted with angle α, to change component Nf2Size.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of changes, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. large-tow carbon fiber spreads and curing integrated preparation process, it is characterised in that comprises the following steps：
（1）Carbon fibre precursor is precisely spacing, with ensure spread when carbon fibre precursor to neutrality；
（2）Precisely it is spacing after carbon fibre precursor is spreaded, detailed process is：Pass sequentially through plain-barreled roll spread in advance, once convex roller
Spread, once recessed roller shaping, angle roller spreads, secondary convex roller spreads, secondary recessed roller shaping, plain-barreled roll spread, complete to carbon fiber
Precursor spreads；
（3）Profit is oozed to carbon fibre precursor addition couplant before completion is spreaded to carbon fibre precursor；
（4）It is heating and curing to oozing the carbon fibre precursor after moistening by drawing heated roller；
（5）Winding.
2. large-tow carbon fiber according to claim 1 spreads and curing integrated preparation process, it is characterised in that described
Step（1）Middle carbon fibre precursor is precisely spacing including pre- spacing, thick spacing, smart spacing, spacing eventually, and realization is precisely spacing.
3. large-tow carbon fiber according to claim 1 spreads and curing integrated preparation process, it is characterised in that described
Step（3）In after secondary recessed roller shaping, plain-barreled roll spread before to carbon fibre precursor addition couplant carry out oozing profit, the couplant
It is added to by diversion mode on carbon fibre precursor, the couplant needs to heat when being added on carbon fibre precursor, temperature
For 50 ~ 80 DEG C.
4. large-tow carbon fiber according to claim 1 spreads and curing integrated preparation process, it is characterised in that described
Step（4）Middle carbon fibre precursor is heating and curing the carbon fibre precursor after oozing profit through three heating rollers.
5. large-tow carbon fiber according to claim 4 spreads and curing integrated preparation process, it is characterised in that described
Step（4）Middle heating roller provides heat by the conduction oil of heating, and the temperature of the conduction oil is 80 ~ 120 DEG C.
6. a kind of large-tow carbon fiber spreads and curing integrated Preparation equipment, it is characterised in that including：
Rack；
Carbon fiber guidance system, the carbon fiber guidance system include pre- limit roller, thick limit roller, the first smart position-limited wheel, second
Smart position-limited wheel, the 3rd smart position-limited wheel, whole limit roller, carbon fibre precursor are realized precisely spacing by above device successively；
Carbon fiber spreads system, the carbon fiber spread system include it is flat spread roller, angle spreads roller, convex spread roller, recessed spreads
Roller, particularly carbon fibre precursor flat spread roller through first successively, second flat spread roller, convex spread roller, the 3rd flat roller, recessed of spreading
Spread roller, angle spreads roller, second it is convex spread roller, roller spreads in Siping City, second recessed spreads roller, the 5th flat roller, the 6th flat of spreading
Roller is spreaded, realizes spreading for carbon fibre precursor；
Couplant add-on system, the couplant add-on system be located at second it is recessed spread roller after, the 5th it is flat spread it is fine to carbon before roller
Dimension precursor addition couplant carries out oozing profit；
The system that is heating and curing is drawn, it is described to draw the system that is heating and curing by heating roller to the carbon fiber after couplant oozes profit
Precursor is heating and curing；
Material-receiving system, the material-receiving system by spread, ooze profit, be heating and curing after carbon fibre precursor be wound into a roll；
Wherein, the rack spreads system, couplant add-on system, traction heating equipped with carbon fiber guidance system, carbon fiber
Curing system and material-receiving system, the Preparation equipment are to integrate the equipment for spreading, oozing profit, being heating and curing.
7. large-tow carbon fiber according to claim 6 spreads and curing integrated Preparation equipment, it is characterised in that described
The quantity that angle spreads roller is two, and is continuously set.
8. large-tow carbon fiber according to claim 6 spreads and curing integrated Preparation equipment, it is characterised in that described
Couplant add-on system includes guiding device, and the guiding device adds couplant by peristaltic pump to carbon fibre precursor, described
Peristaltic pump connection is placed on the couplant storage device in constant water bath box.
9. large-tow carbon fiber according to claim 6 spreads and curing integrated Preparation equipment, it is characterised in that described
Heating roller includes three heating rollers, is respectively the first heating roller, the second heating roller, the 3rd heating roller, and first heating roller leads to
Cross heating roller drive arrangement to be connected with decelerator, and the second heating roller and the 3rd are driven respectively by heating roller drive arrangement
Heating roller rotates.
10. large-tow carbon fiber according to claim 6 spreads and curing integrated Preparation equipment, it is characterised in that institute
Stating material-receiving system includes winding coiled hair, and the winding coiled hair is connected with torque motor, and winder is driven by torque motor
Head rotates, to carbon fibre precursor on winding coiled hair.
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| CN108481609A (en) * | 2018-04-16 | 2018-09-04 | 河南工业大学 | A kind of fiber reinforced thermolplastic composite material short route manufacturing method and manufacture system |
| CN109338599A (en) * | 2018-09-14 | 2019-02-15 | 丹东天皓净化材料有限公司 | The long fine felt processing method of glass is manufactured with the dispersion of glass fibre yarn beam |
| CN110042485A (en) * | 2019-05-20 | 2019-07-23 | 中国科学院山西煤炭化学研究所 | The neat and well spaced makeup of big tow compacting by drying process is set |
| CN112501743A (en) * | 2020-12-23 | 2021-03-16 | 湖州南浔达平纺织品有限公司 | Rapid silk removing device for textile production |
| CN113789628A (en) * | 2021-10-15 | 2021-12-14 | 江西省纳米技术研究院 | Cambered surface roller for flattening fibers, fiber flattening device and application thereof |
| CN114043745A (en) * | 2021-11-04 | 2022-02-15 | 合肥工业大学 | Fiber winding method and system applied to combined revolving body with concave curved surface |
| CN114575011A (en) * | 2022-02-15 | 2022-06-03 | 威海光威精密机械有限公司 | Device and method for synchronizing single-direction fiber flattening and monofilament tension |
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Effective date of registration: 20221028 Address after: 102400 101, floor 1, building 10, yard 87, Hong'an Road, Fangshan District, Beijing Patentee after: Beijing Fangshuo Composite Technology Co.,Ltd. Address before: No. 100, Lianhua street, Zhengzhou high tech Zone, Henan Province Patentee before: He'nan University of Technology Patentee before: SUN YAT-SEN University |