CN107447370A - The device and method that a kind of chopped strand is continuously orientated - Google Patents
The device and method that a kind of chopped strand is continuously orientated Download PDFInfo
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- CN107447370A CN107447370A CN201710833450.2A CN201710833450A CN107447370A CN 107447370 A CN107447370 A CN 107447370A CN 201710833450 A CN201710833450 A CN 201710833450A CN 107447370 A CN107447370 A CN 107447370A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
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Abstract
The invention provides the device that a kind of chopped strand is continuously orientated, and is made up of stock unit, aligning device and separative element；Stock unit is used to be stirred the complex liquid that chopped strand and decentralized medium are formed, and obtains chopped strand suspension and is pumped to aligning device；Aligning device is a helix transporting device being vertically arranged, there is pitch and the helical blade of lead angle gradual change on the screw rod of helix transporting device, the sleeve of screw rod, helical blade and helix transporting device is fitted close to form tapered helical flow path, rotated by drive device drive screw, the chopped strand suspension in tapered helical flow path is orientated and is delivered to the separative element of lower section；Separative element is used to receive the chopped strand suspension being orientated and separating treatment is carried out to it, and compacting winding is carried out after obtaining orientation chopped strand.Present invention also offers a kind of method that chopped strand is continuously orientated.The present invention can improve orientation efficiency, improve orientation quality, orientation fiber length, be promoted suitable for commercial application.
Description
Technical field
The present invention relates to chopped strand utilization technology field, what more specifically a kind of chopped strand was continuously orientated
Device and method.
Background technology
The length of chopped strand is generally 3-15cm, has the anisotropy of height.Chopped strand reinforced resin base is compound
Material is widely used in aviation boat because it has intensity height, the excellent properties that specific modulus is high, corrosion-resistant and heat endurance is good
My god, auto industry, the field such as Leisure Sport and wind-powered electricity generation.And the performance and chopped strand of chopped strand reinforced resin based composites
The factor such as length, content, interface performance and degree of orientation it is relevant, wherein, the length and degree of orientation of fiber are to influence fiber
Strengthen the key factor of composite materials property.In recent years, widely using with fibre, during production and use
Caused fiber scrap also greatly increases, and the fiber that these scraps obtain after processing equally has excellent performance, is
The important sources of chopped strand.However, the chopped strand of the usually No yield point obtained through processing, fiber made of this fiber
Felt poor-performing, it is unfavorable for the renewable resources of recycled fiber.
In recent years, domestic and international researcher has carried out numerous studies to chopped strand orientation felt technology of preparing.
V.Timbrell etc. (Journal of Applied Physics, 1972,43 (11), 4839-4840) it is fine using magnetic field progress
Dimension orientation, it is desirable to which fiber has magnetic conductivity, limits the species of fiber, fiber-wall-element model degree is low and aligning device is complicated.
Vyakarnam etc. (U.S.Patant 584356) carries out fiber-wall-element model using electric field, and orientation process is similar to magnetic field method, it is desirable to
Fiber has certain electric conductivity, equally limits the species of fiber, and fiber-wall-element model degree is low, can not obtain the fibre of high-orientation
Dimension.Kacir etc. (Polymer Engneering＆Science, 1975,15 (7), 525-537) utilizes wet laid fiber orientation technology
Glass fibre orientation is carried out, but its preparation is bulk fibers felt, can not realize the continuous chopped strand orientation of scale.Chinese invention
Patent (CN105178090B) proposes a kind of preparation method of chopped strand orientation felt, and this method is realized fine using tapered fluid
Dimension orientation, fibre length are up to 12mm, and orientation fibre length is shorter, can not prepare the longer fibers orientation with excellent properties
Felt；Longer recycled fiber before orientation is also needed to be chopped, and adds process, and this method is limited by jet size, is gone out
Expect less efficient.
It can be seen that there is the problems such as chopped strand degree of orientation is low, orientation fiber is shorter in above method, also hence in so that recovery
The extensive of fiber, industrialization renewable resources are hindered.
The content of the invention
It is contemplated that at least solves one of above-mentioned technical problem to a certain extent.Therefore, first mesh of the present invention
Be the device for proposing that a kind of chopped strand is continuously orientated, to can improve orientation efficiency, improve orientation quality, be orientated fiber
It is long, promoted suitable for commercial application.
It is another object of the present invention to a kind of method for proposing that chopped strand is continuously orientated.
To achieve the above object, the present invention adopts the following technical scheme that：
The device that a kind of chopped strand is continuously orientated, it is made up of stock unit, aligning device and separative element；
The stock unit is used to be stirred the complex liquid that chopped strand and decentralized medium are formed, and obtains chopped strand
Suspension is simultaneously pumped to aligning device；
The aligning device is a helix transporting device being vertically arranged, have on the screw rod of the helix transporting device pitch with
The helical blade of lead angle gradual change, the sleeve of the screw rod, helical blade and the helix transporting device are fitted close to be formed
Tapered helical flow path, the screw rod is driven to rotate by drive device, to flowing through the chopped strand in the tapered helical flow path
Suspension is orientated, and is delivered to the separative element of lower section；
The separative element is used to receive the chopped strand suspension being orientated and carries out separating treatment to it, is orientated
Compacting winding is carried out after chopped strand.
Preferably, helical form is passed through between the lower end of the discharging opening of the helix transporting device and the tapered helical flow path
Pipeline is connected, and snail shape runner is formed with the spiral pipe.
Preferably, the discharging opening is set to be shaped as tapering to be flat along chopped strand suspension flow in cylindrical smooth
The structure of flat shape.
Preferably,：The pitch of the helical blade of the helix transporting device and lead angle are along chopped strand suspension
Flow direction is successively decreased.
Preferably, the stock unit is to be connected and composed by stirred tank and liquid storage tank by pipeline, is set on the liquid storage tank
There is ultrasonic generator, the bubble in liquid storage tank in chopped strand suspension is removed by the ultrasonic generator；
Motor-mount pump is provided between the aligning device and the stock unit, by the motor-mount pump by the chopped strand
Suspension is pumped into the helix transporting device through mozzle；
The separative element is into the conveyer belt is by conveyer belt, bellows, drying box, roller wheel and rolling-up mechanism
Mesh structure with intensive mesh, the chopped fibre being orientated is obtained for receiving, filtering the chopped strand suspension being orientated
Dimension, and the bellows, drying box, roller wheel and winder are sequentially delivered to, removed by the bellows and drying box
Residue dispersion medium on the chopped strand of orientation, is pressed the chopped strand being orientated by the roller wheel and winder
Controlling rolling.
Preferably, the lower section of the conveyer belt is provided with collecting pit, for collecting scattered Jie filtered out through the conveyer belt
Matter.
The present invention additionally provides a kind of continuous method for alignment of chopped strand simultaneously, and it is carried out as follows：
1) fiber disperses
The complex liquid that chopped strand and decentralized medium are formed is added into stirred tank and is stirred, the chopped strand of acquisition
Suspension is flowed into liquid storage tank through pipeline, and the bubble in chopped strand suspension is removed by the ultrasonic generator on liquid storage tank,
And it is pumped to aligning device；
2) fiber-wall-element model
Chopped strand suspension is entered in helix transporting device, through drive device drive screw turns, utilizes rotation
Screw rod makes the chopped strand suspension in tapered helical flow path produce velocity gradient and acted on by hydrodynamic shear, realizes
To the orientation of the chopped strand in suspension；
3) separation drying
Received by the conveyer belt of the mesh structure with intensive mesh, the chopped strand suspension that filtering has been orientated, and
Bellows, drying box, roller wheel and winder are sequentially delivered to, the chopped strand being orientated is removed by bellows and drying box
On residue dispersion medium, compacting winding is carried out to the chopped strand being orientated by roller wheel and winder, finally taken
To fiber.
Preferably, in step 1), the length of the chopped strand is 5-150mm, and the viscosity of complex liquid is 1.5-25pa.s,
The mixing speed of stirred tank is 600-1200r/min, mixing time 20-60min, the ultrasound of the ultrasonic generator on liquid storage tank
Wave frequency rate is 25-40khz；
In step 2), the length of sleeve is 300-500mm, internal diameter 50-80mm, screw speed 20-100r/min, spiral shell
The big footpath of bar is 50-80mm, path 30-50mm, and the upper end pitch of screw rod is 40-80mm, and lower end pitch is 20-40mm, spiral shell
The tooth number of turns is 6-12 circles, and pitch is from top to bottom successively decreased, and vortex-like runner internal diameter be 7-15 ㎜, the cylindrical internal diameter in discharging opening upper end
For 10-18mm, tapered along chopped strand suspension flow to smooth as pancake, the width of discharging opening lower end is 1-4mm, length is
10-100mm；
In step 3), the transfer rate of conveyer belt is 8-15m/min, and the blast pressure of bellows is 0.1-0.5MPa, is done
The drying temperature of dry case is 200-300 DEG C.
Preferably, the chopped strand is in carbon fiber, glass fibre, natural fiber, polyimide fiber, chemical fibre
One or more.
Preferably, the decentralized medium is that one kind in glycerine, gelatin, sodium alginate, cellulose family presses mass body with water
Product is than the mixed liquor for 3-15g/L mixing gained.
Compared with the prior art, the present invention has the beneficial effect that：
1st, prior art completes chopped strand orientation only with tapered orientation shower nozzle, and the tapered orientation shower nozzle section is
Pyramidal structure, limited by its shape and size, even if the width of increase shower nozzle, can not also prepare longer fibers orientation felt, its
The length of orientation fiber is up to 15mm；And the aligning device of the present invention is to be made using the screw rod of rotation in tapered helical flow path
Chopped strand suspension produces velocity gradient and acted on by hydrodynamic shear, so as to realize to chopped strand in suspension
Orientation, and enter discharging opening chopped strand suspension completed to be orientated, fiber-wall-element model is not by the shape and size of discharging opening
Constraint, the discharging opening of different shape and size can be chosen according to technological requirement, fiber-wall-element model degree of the invention is high, is orientated efficiency
Height, suitable for the fiber-wall-element model of different length requirement；
2nd,, can be by increasing the rotating speed of screw rod, selecting in order to adapt to greater length of orientation fiber requirements in the present invention
The mode of the viscosity of the bigger screw rod of helix girth or lifting fibrous suspension accordingly adjusts, or uses above-mentioned three kinds of modes
Combination come corrdinated adjustment, strong adaptability；
3rd, the present invention, can be by increasing the rotating speed of screw rod or selecting larger spiral shell in order to adapt to higher tapping flowrate requirement
The mode for revolving the screw rod of lift angle accordingly adjusts, and operation is flexible；
4th, the present invention in practical application, for realize it is broader orientation fibrofelt preparation, can be on a moving belt just along width
Degree direction is set up in parallel a number of aligning device；, can be square on a moving belt to realize the preparation of thicker orientation fibrofelt
A number of aligning device is arranged before and after along conveying direction, it is easy to accomplish industrialization production；
5th, the applicable kinds of fibers of the present invention is unrestricted, can be carbon fiber, glass fibre, natural fiber, polyimides
One or more in fiber and various chemical fibres.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the continuous aligning device of chopped strand of the present invention；
Fig. 2 is the structural representation of aligning device in the present invention.
In figure, 1 stirred tank；2 liquid storage tanks；3 ultrasonic generators；4 helix transporting devices；5 screw rods；6 helical blades；7 is tapered
Helical flow path；8 drive devices；9 discharging openings；10 snail shape runners；11 conveyer belts；12 bellows；13 drying boxes；14 roller wheels；15
Winder；16 collecting pits；17 motor-mount pumps.
Embodiment
Referring to Fig. 1 to Fig. 2, device that the chopped strand of the present embodiment is continuously orientated be by stock unit, aligning device and
Separative element is formed, and is specially：
Unit of stocking up is to be connected and composed by stirred tank 1 and liquid storage tank 2 by pipeline, by stirred tank 1 to chopped strand and
The complex liquid that decentralized medium is formed is stirred, and is obtained chopped strand suspension and is flowed into liquid storage tank 2；Liquid storage tank 2 is provided with
Ultrasonic generator 3, using the ul-trasonic irradiation of ultrasonic generator 3, it can not only remove in liquid storage tank 2 in chopped strand suspension
Bubble, while the fiber sedimentation being also avoided that in chopped strand suspension, hereafter, the chopped strand suspension warp in liquid storage tank 2
Motor-mount pump 17 is pumped into aligning device through mozzle；
Aligning device is a helix transporting device 4 being vertically arranged, and has pitch and spiral on the screw rod 5 of helix transporting device 4
The helical blade 6 that lift angle successively decreases along the flow direction of chopped strand suspension, screw rod 5, helical blade 6 and helix transporting device 4
Sleeve is fitted close to form tapered helical flow path 7, is rotated by the drive screw 5 of drive device 8, the screw rod 5 of rotation makes tapered spiral shell
Chopped strand suspension in eddy flow road 7 not only produces velocity gradient but also acted on by hydrodynamic shear, realizes to being chopped
The orientation of fibrous suspension, and the chopped strand length being orientated, fiber-wall-element model degree is high, then is delivered to the separative element of lower section；
Separative element is made up of conveyer belt 11, bellows 12, drying box 13, roller wheel 14 and winder 15, conveyer belt
11 be the mesh structure with intensive mesh, and gentle reception is short through being orientated for the above-mentioned discharging opening 9 of helix transporting device 4 outflow
Cut fibrous suspension and filter, obtain the chopped strand being orientated, the chopped strand that the conveyer belt 11 constantly run will be orientated
Bellows 12, drying box 13, roller wheel 14 and winder 15 are sequentially delivered to, removes and has taken by bellows 12 and drying box 13
To chopped strand on residue dispersion medium, the chopped strand being orientated is suppressed by roller wheel 14 and winder 15
Winding, so far chopped strand orientation completion.
Wherein, the speed of service of conveyer belt 11, height, inclination angle are adjustable, the discharging different for adaptation orientation device
Speed, also, the top of above-mentioned bellows 12 is additionally provided with waterfog head, can be removed in air blast on the chopped strand being orientated
Residue dispersion medium while produce water smoke auxiliary and separate and wash orientation fiber；The temperature of drying box 13 can automatically adjust,
For keeping the degree of drying of discharging uniform.
The technique of the present embodiment is simple and efficiency high, certain way cloth can be pressed above conveyer belt 11 according to real needs
One or more aligning devices are put, it is workable to meet to be orientated the requirement of the different in width and thickness of fibrous felt, it is easy to
Industrialization production is realized, is specially：
To realize the preparation of broader orientation fibrofelt, a fixed number can be set up in parallel in the width direction above conveyer belt 11
The aligning device of amount；To realize the preparation of thicker orientation fibrofelt, can be arranged above conveyer belt 11 along before and after conveying direction
A number of aligning device.
As a preferable scheme, lead between the discharging opening 9 of helix transporting device 4 and the lower end of tapered helical flow path 7
Cross spiral pipe to be connected, spirally pipeline forms snail shape runner 10；Also, being shaped as along chopped for discharging opening 9 is set
Fibrous suspension flow direction is tapered as pancake structure in cylindrical smooth.Pass through above-mentioned tapered helical flow path 7, snail shape runner 10
It is engaged with discharging opening 9, the chopped strand suspension that can be achieved to be orientated is flowed by circumferential flow gentle transition to axial direction, and then
Realization can orient outflow when by discharging opening 9, and the chopped strand suspension for avoiding being orientated caused by circumferential flow can not
The situation of directional collecting occurs.
In addition, the lower end of above-mentioned discharging opening 9 is in pancake, change the shape of the fluid after discharging opening 9, be easy to the biography of lower section
Send band 11 gently to receive, while be favorably improved the preparation efficiency of orientation fibrofelt.
In the present embodiment, complete to be orientated due to entering the chopped strand in the discharging opening 9 of helix transporting device 4, therefore,
Chopped strand orientation is no longer influenceed by the shape and size of discharging opening 9 in suspension, can choose different dischargings according to technological requirement
Mouth 9, flexibility is good, efficiency high.
And the device strong adaptability that the chopped strand of the present embodiment is continuously orientated, in order to adapt to greater length of orientation fiber
It is required that can be by increasing the rotating speed of screw rod 5, selecting the bigger screw rod 5 of helix girth or lifting the viscosity of fibrous suspension
Mode come accordingly adjust, or using above-mentioned three kinds of modes combination come corrdinated adjustment, strong adaptability；In order to adapt to higher go out
Expect flow rates demand, can accordingly be adjusted by way of increasing the rotating speed of screw rod 5 or the screw rod 5 of the larger lead angle of selection,
Operation is flexible.
As another preferable scheme, the lower section of conveyer belt 11 is provided with collecting pit 16, for collecting the communicated mistake of band 11
The decentralized medium filtered out.
The present embodiment additionally provides a kind of continuous method for alignment of chopped strand, and it is to carry out as follows：
1) fiber disperses
The complex liquid that chopped strand and decentralized medium are formed is added into stirred tank and is stirred, the chopped strand of acquisition
Suspension is flowed into liquid storage tank through pipeline, and the bubble in chopped strand suspension is removed by the ultrasonic generator on liquid storage tank,
And it is pumped to aligning device；
2) fiber-wall-element model
Chopped strand suspension is entered in helix transporting device, through drive device drive screw turns, utilizes rotation
Screw rod makes the chopped strand suspension in tapered helical flow path produce velocity gradient and acted on by hydrodynamic shear, realizes
To the orientation of the chopped strand in suspension；
3) separation drying
Received by the conveyer belt of the mesh structure with intensive mesh, the chopped strand suspension that filtering has been orientated, and
Bellows, drying box, roller wheel and winder are sequentially delivered to, the chopped strand being orientated is removed by bellows and drying box
On residue dispersion medium, compacting winding is carried out to the chopped strand being orientated by roller wheel and winder, finally taken
To fiber.
Specifically, in step 1), the length of chopped strand is 5-150mm, and the viscosity of complex liquid is 1.5-25pa.s, stirring
The mixing speed of kettle is 600-1200r/min, mixing time 20-60min, the ultrasonic wave frequency of the ultrasonic generator on liquid storage tank
Rate is 25-40khz；In the present embodiment, the length for selecting chopped strand in fact is 80mm, and the viscosity of complex liquid is 8pa.s, stirred tank
Mixing speed is 800r/min, mixing time 30min, and the ultrasonic frequency of the ultrasonic generator on liquid storage tank is 30khz.
In step 2), the length of sleeve is 300mm, and internal diameter is 60.2 ± 0.05mm, screw speed 60r/min, screw rod
Big footpath be 60 ± 0.05mm, path 40mm, the upper end pitch of screw rod is 60mm, and lower end pitch is 20mm, and pitch is by upper
Successively decrease under, the thread number of turns is 6 circles, and thread is rectangle tooth, and tooth thickness is 5 ㎜, and vortex-like runner internal diameter is 7 ㎜, and discharging opening upper end is justified
The internal diameter of cylindricality is 10mm, along chopped strand suspension flow to smoothly tapering as pancake, the shape of discharging opening pancake lower end
For 2 × 20mm square-section；
In step 3), the transfer rate of conveyer belt is 8-15m/min, and the blast pressure of bellows is 0.1-0.5MPa, is done
The drying temperature of dry case is 200-300 DEG C；In the present embodiment, the transfer rate of selecting conveyer belt in fact is 12m/min, the drum of bellows
Wind pressure is 0.3MPa, and the drying temperature of drying box is 260 DEG C.
In addition, in the present embodiment, the species of chopped strand is unrestricted, can be carbon fiber, glass fibre, natural fiber,
One or more in polyimide fiber, chemical fibre；The chopped strand that the present embodiment selects in fact is carbon fiber.
Decentralized medium is one kind in glycerine, gelatin, sodium alginate, cellulose family and water by mass volume ratio is 3-15g/
The mixed liquor of L mixing gained.Decentralized medium in the present embodiment is that carboxy-propyl cellulose with water is that 6g/L is mixed by mass volume ratio
Close the mixed liquor of gained.
To sum up, in the present embodiment, the orientation process of chopped strand is carried out continuously, and automaticity is high, from stock to
Obtaining orientation fibrous felt whole process can automated production.
Claims (10)
1. the device that a kind of chopped strand is continuously orientated, it is characterized in that：It is made up of stock unit, aligning device and separative element；
The stock unit is used to be stirred the complex liquid that chopped strand and decentralized medium are formed, and obtains chopped strand and suspends
Liquid is simultaneously pumped to aligning device；
The aligning device is a helix transporting device being vertically arranged (4), is had on the screw rod (5) of the helix transporting device (4)
Pitch and the helical blade (6) of lead angle gradual change, the screw rod (5), helical blade (6) and the helix transporting device (4)
Sleeve be fitted close to form tapered helical flow path (7), drive the screw rod (5) to rotate by drive device (8), to flowing through
The chopped strand suspension stated in tapered helical flow path (7) is orientated, and is delivered to the separative element of lower section；
The separative element is used to receive the chopped strand suspension being orientated and separating treatment is carried out to it, obtains orientation and is chopped
Compacting winding is carried out after fiber.
2. the device that chopped strand according to claim 1 is continuously orientated, it is characterized in that：The helix transporting device (4)
Discharging opening (9) and the lower end of the tapered helical flow path (7) between be connected by spiral pipe, with the helical coil
Road forms snail shape runner (10).
3. the device that chopped strand according to claim 2 is continuously orientated, it is characterized in that：The discharging opening (9) is set
It is shaped as tapering as pancake structure along chopped strand suspension flow in cylindrical smooth.
4. the device that chopped strand according to claim 1 is continuously orientated, it is characterized in that：The helix transporting device (4)
The pitch of helical blade (6) successively decrease with flow direction of the lead angle along chopped strand suspension.
5. the device that chopped strand according to claim 1 is continuously orientated, it is characterized in that：
The stock unit is to be connected and composed by stirred tank (1) and liquid storage tank (2) by pipeline, and the liquid storage tank (2) is provided with
Ultrasonic generator (3), the bubble in liquid storage tank (2) in chopped strand suspension is removed by the ultrasonic generator (3)；
Motor-mount pump (17) is provided between the aligning device and the stock unit, is chopped by the motor-mount pump (17) by described
Fibrous suspension is pumped into the helix transporting device (4) through mozzle；
The separative element is by conveyer belt (11), bellows (12), drying box (13), roller wheel (14) and winder (15) structure
Into the conveyer belt (11) is the mesh structure with intensive mesh, for receiving, filtering the chopped strand suspension being orientated
The chopped strand being orientated is obtained, and is sequentially delivered to the bellows (12), drying box (13), roller wheel (14) and winder
(15) the residue dispersion medium on the chopped strand being orientated, is removed by the bellows (12) and drying box (13), is passed through
The roller wheel (14) and winder (15) carry out compacting winding to the chopped strand being orientated.
6. the device that chopped strand according to claim 1 is continuously orientated, it is characterized in that：The lower section of the conveyer belt (11)
Provided with collecting pit (16), for collecting the decentralized medium filtered out through the conveyer belt (11).
A kind of 7. continuous method for alignment of chopped strand, it is characterized in that carrying out as follows：
1) fiber disperses
The complex liquid that chopped strand and decentralized medium are formed is added into stirred tank and is stirred, the chopped strand of acquisition suspends
Liquid is flowed into liquid storage tank through pipeline, and the bubble in chopped strand suspension, and pump are removed by the ultrasonic generator on liquid storage tank
Deliver to aligning device；
2) fiber-wall-element model
Chopped strand suspension is entered in helix transporting device, through drive device drive screw turns, utilizes the screw rod of rotation
The chopped strand suspension in tapered helical flow path is produced velocity gradient and acted on by hydrodynamic shear, realized to outstanding
The orientation of chopped strand in supernatant liquid；
3) separation drying
Received by the conveyer belt of the mesh structure with intensive mesh, the chopped strand suspension that filtering has been orientated, and successively
Bellows, drying box, roller wheel and winder are sent to, is removed by bellows and drying box on the chopped strand being orientated
Residue dispersion medium, compacting winding is carried out to the chopped strand being orientated by roller wheel and winder, it is final to obtain orientation fibre
Dimension.
8. the continuous method for alignment of chopped strand according to claim 7, it is characterized in that：
In step 1), the length of the chopped strand is 5-150mm, and the viscosity of complex liquid is 1.5-25pa.s, and stirred tank stirs
It is 600-1200r/min to mix speed, mixing time 20-60min, and the ultrasonic frequency of the ultrasonic generator on liquid storage tank is
25-40khz；
In step 2), the length of sleeve is 300-500mm, internal diameter 50-80mm, screw speed 20-100r/min, screw rod
Big footpath is 50-80mm, path 30-50mm, and the upper end pitch of screw rod is 40-80mm, and lower end pitch is 20-40mm, thread circle
Number is enclosed for 6-12, and pitch is from top to bottom successively decreased, and vortex-like runner internal diameter is 7-15 ㎜, and the internal diameter of discharging opening upper end cylinder is
10-18mm, tapered along chopped strand suspension flow to smooth as pancake, the width of discharging opening lower end is 1-4mm, length is
10-100mm；
In step 3), the transfer rate of conveyer belt is 8-15m/min, and the blast pressure of bellows is 0.1-0.5MPa, drying box
Drying temperature be 200-300 DEG C.
9. the continuous method for alignment of chopped strand according to claim 7, it is characterized in that：The chopped strand be carbon fiber,
One or more in glass fibre, natural fiber, polyimide fiber, chemical fibre.
10. the continuous method for alignment of chopped strand according to claim 7, it is characterized in that：The decentralized medium is glycerine, bright
A kind of and water in glue, sodium alginate, cellulose family is mixed the mixed liquor of gained by mass volume ratio for 3-15g/L.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111087973A (en) * | 2019-12-17 | 2020-05-01 | 吉林大学 | Preparation device and preparation method of vegetable fiber fermentation modified reinforced friction material |
| CN115961499A (en) * | 2022-11-25 | 2023-04-14 | 中国科学院宁波材料技术与工程研究所 | Short carbon fiber orientation preparation facilities that cuts |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111087973A (en) * | 2019-12-17 | 2020-05-01 | 吉林大学 | Preparation device and preparation method of vegetable fiber fermentation modified reinforced friction material |
| CN111087973B (en) * | 2019-12-17 | 2021-07-27 | 吉林大学 | Preparation device and preparation method of vegetable fiber fermentation modified reinforced friction material |
| CN115961499A (en) * | 2022-11-25 | 2023-04-14 | 中国科学院宁波材料技术与工程研究所 | Short carbon fiber orientation preparation facilities that cuts |
| CN115961499B (en) * | 2022-11-25 | 2024-04-26 | 中国科学院宁波材料技术与工程研究所 | Chopped carbon fiber orientation preparation device |
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