CN106903906B - A kind of continuous fiber reinforced thermoplastic resin melt impregnation device and preparation method - Google Patents
A kind of continuous fiber reinforced thermoplastic resin melt impregnation device and preparation method Download PDFInfo
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- CN106903906B CN106903906B CN201710288630.7A CN201710288630A CN106903906B CN 106903906 B CN106903906 B CN 106903906B CN 201710288630 A CN201710288630 A CN 201710288630A CN 106903906 B CN106903906 B CN 106903906B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses the melt impregnation devices and preparation method of a kind of continuous fiber reinforced thermoplastic resin, the melt impregnation device includes exhibition guide frame, preheating device, melt impregnation mold, cooling device, traction device and extruder, melt impregnation mold includes at least one slit roller, slit is provided on slit roller, slit roller can adjust rotation.The device further includes multiple dispersion rollers, disperses roller and slit roller is equidistantly staggered in arrangement.The melt impregnation device and preparation method of the continuous fiber reinforced thermoplastic resin proposed according to the present invention, it can be with wrap angle of the on-line tuning fibre bundle in impregnation mold, increase fibre bundle spreading width, improve fibre bundle degree of steeping, improve continuous fiber reinforced thermoplastic resin composite effect, continuously prepares continuous fiber reinforced thermoplastic composite material prepreg or prepreg tape.
Description
Technical field
The present invention relates to a kind of continuous fiber reinforced thermoplastic resin melt impregnation device and preparation method, more particularly to
It is a kind of can on-line tuning immersion system wrap angle continuous fiber reinforced thermoplastic resin melt impregnation device and preparation method.
Background technique
Continuous fiber reinforced thermoplastic resin based composites be one kind by continuous fiber as reinforcement, with thermoplastic resin
Rouge is as matrix, a kind of high-performance composite materials being prepared by certain process combining.Due to reinforcing fiber be it is continuous,
Therefore compared with staple fiber or long fibre reinforced thermoplastic resin based composite material, continuous fiber reinforced thermoplastic resin base is compound
Material has more excellent mechanical performance and mechanical property, has good specific stiffness and specific strength, toughness height, impact resistance
The many merits such as energy is good, dimensional stability is high, corrosion-resistant and water absorption rate is low.Thus it is widely used in communications and transportation, aviation boat
It, the industries such as sports equipment, industrial products and construction material.
The common dipping method of continuous fiber reinforced thermoplastic resin is melt impregnation.Melt impregnation is to utilize thermoplastic
Property resin heating melting characteristic, make fibre bundle by full of polymer melt dipping tank in, fibre bundle is in certain tension
It is impregnated with dispersion is obtained under pressure effect.In order to realize that good fiber dispersion and dipping, dipping former are intracavitary using similar sinusoidal
The bending dipping runner of curve, improved curved channel dipping die head, is arranged in dipping runner and leads the dipping runner of undaform
Roll dies etc..The appearance of the impregnation mold of different shape and structure is provided to reinforcing fiber tow expansion effect, increases fiber
Tension and pressure of the beam in impregnation mold realize the sufficient wetting fibre tow of high-viscosity polymer melt.Therefore dipping former
The structure of tool is designed to realize the critical component of fiber-reinforced thermoplastic resin dipping effect.
In the Chinese invention patent of Publication No. CN102218829A, it is noted that a kind of continuous/long fiber reinforcement thermoplastic
Property impregnation mold, fiber impregnation runner is provided in the mold, has seal wire block on runner, sub-wire hole is provided on seal wire block,
Sub-wire hole is flowed to fiber impregnation to be connected；Continuous fiber enters the heat of mould impregnation mold and melting through the sub-wire hole on seal wire block
Plastic resin contact, through the ring between the identical matrix cavity inner wall of annular ripple revolving body mandrel and therewith external surface shape
Shape, corrugated impregnate runner, and fibre bundle is unfolded dispersion, realize dipping.In the Chinese invention of Publication No. CN102729483A
In patent, it is noted that a kind of continuous fiber reinforced thermoplastic resin molding equipment, the equipment include fiber and thermal, melting
Impregnation mold and secondary rolling device；Melt impregnation mold in the device by several tension roll assemblies equidistantly arranged at,
Fibre bundle alternately bypasses jockey pulley in impregnation mold, realizes dispersion and the dipping of fibre bundle.In Publication No.
In the Chinese invention patent of CN103753831A, it is noted that a kind of impregnation mold of continuous fiber reinforced thermoplastic composite material,
The mold is made of shell, upper die head and lower die head.Upper and lower die head is correspondingly arranged the dipping of the wave crest with mutual dislocation face, up and down
Die head mutually fastens and forms dipping passage.The mold dipping method is impregnation mold in being vertically arranged, and continuous fiber two sides are distinguished
It being adjacent to the dipping face of upper die head and lower die head and is tensioned by tensioning apparatus, extruder is coated in the two sides of continuous fiber belt,
Mold heating, continuous fiber belt are influenced dipping by wavy dipping face friction tension.Publication No. CN103770241A's
In Chinese invention patent, it is noted that a kind of two-sided melt impregnation equipment of continuous fiber reinforced thermoplastic resin, equipment are
The pre-dispersed area of fiber channel setting fiber, thermoplastic resin-impregnated fibers area and fiber redisperse area in melt impregnation head, resin
Two-sided distribution runner is set in wetting fibre area, and two-sided distribution runner includes the upper Layer assignment runner and lower Layer assignment of symmetrical configuration
Runner；It is equipped with pre-dispersing device in the pre-dispersed area of fiber, is equipped with redisperse device in fiber redisperse area.
Existing continuous fiber dipping thermoplastic resin immersion system has the following problems: it is solid that 1. fibre bundles impregnate runner form
It is fixed, it impregnates in the form of a single；2. tension suffered by fibre bundle is difficult to adjust measurement in impregnation mold；3. fibre bundle divides in impregnation mold
It is poor to dissipate effect, causes dipping effect poor；4. immersion system is complex-shaped, process relatively difficult.
Summary of the invention
The purpose of the present invention is in view of the above-mentioned problems existing in the prior art, provide a kind of continuous fiber reinforced thermoplastic tree
Rouge melt impregnation device and preparation method.
The present invention provides a kind of melt impregnation device of continuous fiber reinforced thermoplastic resin, including exhibition guide frame, pre- hot charging
It sets, melt impregnation mold, cooling device, traction device and extruder, melt impregnation mold includes at least one slit roller, described
The slit that width is less than its radius is provided on slit roller, the slit roller can adjust rotation.
Preferably, the slit both ends are arc transition, and arc radius range is 1-20mm.
Preferably, the melt impregnation device further includes 1-6 dispersion roller, disperses roller and slit roller is staggered in arrangement.
Preferably, godet is additionally provided between the exhibition guide frame and the preheating device.
Preferably, the slit roller is able to carry out positive and negative both direction rotation, and rotating range is 0- ± 90 °.
The present invention also provides using above-mentioned continuous fiber reinforced thermoplastic resin melt impregnation device preparation method,
The following steps are included:
(a) continuous tow is pre-dispersed by exhibition guide frame progress fiber, and be dried by preheating device；
(b) step (a) treated continuous tow is alternately bypassed to the dispersion roller in melt impregnation mold, and is worn
Slit roller is crossed, wrap angle of the continuous tow in impregnation mold can be adjusted by rotating slit roller, and can change in mold
Tension suffered by fibre bundle；The thermoplastic melt being plasticized is squeezed by melt impregnation mold by extruder simultaneously, it is continuous fine
Dimension beam is dispersed and is impregnated under the action of dispersing roller and slit roller；
(c) step (b) treated continuous fiber and thermoplastic melt are cooled down by cooling device
Sizing, the continuous production under the traction of traction device obtain the continuous fiber reinforced thermoplastic resin.
Preferably, the continuous tow in glass fibre, carbon fiber, basalt fibre or aramid fiber at least
It is a kind of.
Preferably, the thermoplastic melt be selected from polyethylene, polypropylene, nylon, polyethylene terephthalate,
At least one of polyurethane, polyformaldehyde.
Preferably, the hauling speed of the traction device is between 0-1m/s.
The melt impregnation device and preparation method of the continuous fiber reinforced thermoplastic resin proposed according to the present invention, can be with
Wrap angle of the on-line tuning fibre bundle in impregnation mold increases fibre bundle spreading width, improves fibre bundle degree of steeping, improves
Continuous fiber reinforced thermoplastic resin composite effect continuously prepares continuous fiber reinforced thermoplastic composite material prepreg or pre-
Soak band.
Compared with prior art, the melt impregnation device of this continuous fiber reinforced thermoplastic resin and dipping method have following
Advantage:
1. melt impregnation mold provided by the invention, is made of dispersion roller and slit roller, slit roller is rotatable, therefore can lead to
The rotation for crossing slit roller changes the wrap angle of fibre bundle melt impregnation.And existing equipment fibre bundle dipping runner form is fixed, and is soaked
Stain is in the form of a single；
2. in the present invention, can be shown by the angle of slit roller outer handle and directly obtain corresponding internal fiber line road
Form and corresponding wrap angle；
3. the present invention is combined by dispersion roller and slit roller, abundant by slit conduit while keeping fiber fully dispersed
Dipping, while the tension that slit roller rotation generates further promotes thermoplastic melt to impregnate fibre bundle；
4. present invention process process is simple, process conditions are easily achieved, while impregnation mold structure proposed by the present invention is easy
It is realized in processing.
Detailed description of the invention
Fig. 1 is continuous fiber reinforced thermoplastic resin melt impregnation schematic device of the present invention；
Fig. 2 is continuous fiber reinforced thermoplastic resin melt impregnation mould structure schematic diagram of the present invention；
Fig. 3 is A direction view structural schematic diagram on the outside of slit roller handle of the present invention；
In figure, 1, continuous tow；2, guide frame is opened up；3, godet；4, preheating device；5, melt impregnation mold；6, disperse
Roller；7, slit roller；71, slit；72, handle；8, cooling device；9, traction device；10, extruder.
Specific embodiment
The present invention is further elaborated in the following with reference to the drawings and specific embodiments, but the present invention is not limited to once implement
Example.
Embodiment one
Referring to Fig. 1 and Fig. 2, the melt impregnation device of continuous fiber reinforced thermoplastic resin provided by the invention includes exhibition silk
Frame 2, godet 3, preheating device 4, melt impregnation mold 5, cooling device 8, traction device 9 and extruder 10.
Melt impregnation mold 5 in the present embodiment is made of 3 dispersion roller 6 and 2 slit rollers 7.6 diameter of dispersion roller
It is 20mm for 7 diameter of slit roller described in 20mm；Slit 71 is provided on slit roller 7, slit 71 is 30mm 2mm high, long；71 both ends of slit
For arc transition, arc radius range is 2mm, and slit roller 7 can positive and negative rotation.
Disperse roller 6 in above-mentioned melt impregnation mold 5 and slit roller 7 is equidistantly staggered in arrangement, adjacent dispersion roller 6 and slit roller
Center between 7 is away from for 40mm.Dispersion roller 6 is fixed in the melt impregnation mold 5, and slit roller 7 can be by conjunction
The handle 72 for being located at the outside of melt impregnation mold 5 carry out positive and negative both direction rotation, scale can be indicated on handle 72,0 ° is right
Answering slit 71 in roller 7 is horizontal position, and rotating range is 0- ± 90 °.
The present invention also provides using above-mentioned continuous fiber reinforced thermoplastic resin melt impregnation device preparation method,
The following steps are included:
(a) continuous tow 1 is pre-dispersed by the exhibition progress fiber of guide frame 2, and place is dried by preheating device 4
Reason, preheating temperature are 190 DEG C.
(b) by the step (a) treated continuous tow 1 alternately around the dispersion roller 6 in melt impregnation mold 5,
And the slit 71 of slit roller 7 is passed through, continuous tow 1 can be adjusted by rotating slit roller 7 in the wrap angle of dip roll, and can be with
Change tension suffered by fibre bundle in mold；The thermoplastic melt being plasticized is squeezed by melt impregnation by extruder 10 simultaneously
Mold 5,190 DEG C of 10 feeding section heating temperature of extruder, 210 DEG C of fluxing zone heating temperature, homogenizing zone and extrusion head temperature are
230 DEG C, 230 DEG C of the heating temperature of melt impregnation mold 5；Continuous tow 1 obtains under the action of dispersing roller 6 and slit roller 7
Dispersion and dipping；Fibre bundle after dipping is involved by the sizing mouth mold sizing that diameter is 2.8mm；
(c) step (b) treated continuous fiber and thermoplastic melt are cooled down by cooling device 8
Sizing, the continuous production under the traction of traction device 9 obtain the continuous fiber reinforced thermoplastic resin.
In step (a), continuous tow 10 is glass fibre.
In step (b), thermoplastic melt is polypropylene.
Slit roller 7 rotates adjusting between 0- ± 90 ° in the step (b).
The hauling speed 2m/min of traction device 9 in the step (c).
Water absorption rate is the important indicator for reflecting degree of steeping, according to GB/T 1462-2005 " fibre reinforced plastics water imbibition
Test method ", for every group of material strip prepared by the present embodiment perpendicular to axial 5, sample for intercepting long 50mm ± 1mm；Sample
It puts dry 20h ± 1h in 50 DEG C ± 2 DEG C of baking oven into, takes out sample and weigh each sample mass (m1), it is accurate to 0.001g；With
It is ± 0.5h for 24 hours in 23 DEG C ± 0.5 DEG C of distilled water that sample, which is immersed temperature, afterwards, and sample taking-up filter paper is removed surface moisture
Claim to obtain sample mass (m again afterwards2), it is accurate to 0.001g；Every group of batten repeats the above testing procedure, relative to sample mass
Percentage absorb water according to formulaIt can be calculated.
Tensile strength is to reflect the important indicator of prepreg mechanical property, according to GB/T1477-2005 " fibre reinforced plastics
Erichsen test method ", prepreg prepared by the present embodiment is prepared into thickness d=4mm, intermediate parallel section width b=
The standard testing batten of 10mm, and on measurer for pulling force carry out tensile property test, tensile test machine clamp spacing from
115mm, loading velocity 2mm/min, tensile stress is according to formulaIt can be calculated.Experimental result is see following table 1.
Table 1
Embodiment two
The present embodiment dipping process, dipping method and evaluation of result method are the same as example 1, different
Place is: the present embodiment all uses slit roller 7, and 7 diameter of slit roller is 30mm, and the slit 71 of the slit roller 7 is high
5mm, long 30mm, 71 both ends of slit are arc transition, and arc radius range is 5mm, and slit roller 7 can positive and negative rotation；Adjacent slots
Center between roller is away from for 50mm.Continuous tow 10 used is carbon fiber in the present embodiment, and thermoplastic melt is nylon.
210 DEG C of 10 feeding section heating temperature of extruder, 230 DEG C of fluxing zone heating temperature, homogenizing zone and squeeze out head temperature
It is 250 DEG C, 250 DEG C of the heating temperature of melt impregnation mold 5；Continuous tow 1 obtains under the action of dispersing roller 6 and slit roller 7
To dispersion and dipping；Fibre bundle after dipping is involved by the sizing mouth mold sizing that diameter is 2.8mm.Experimental data is see following
Table 2.
Table 2
Embodiment three
The present embodiment dipping process, dipping method and evaluation of result method are the same as example 1, different
Place is: the present embodiment dispersion 6 diameter of roller used is 30mm, and 7 diameter of slit roller is 30mm, the slit roller 7 it is narrow
71 high 5mm, long 30mm are stitched, 71 both ends of slit are arc transition, and arc radius range is 5mm, and slit roller 7 can positive and negative rotation；Phase
Center between neighbour's dispersion roller and slit roller is away from for 50mm.Continuous tow 10 used is aramid fiber, thermoplastic in the present embodiment
Property resin melt be polyethylene.
190 DEG C of 10 feeding section heating temperature of extruder, 210 DEG C of fluxing zone heating temperature, homogenizing zone and squeeze out head temperature
It is 230 DEG C, 230 DEG C of the heating temperature of melt impregnation mold 5；Continuous tow 1 obtains under the action of dispersing roller 6 and slit roller 7
To dispersion and dipping；Fibre bundle after dipping is involved by the sizing mouth mold sizing that diameter is 2.8mm.Experimental data is see following
Table 3.
Table 3
As described above, the present invention can be realized preferably, above-described embodiment is only present pre-ferred embodiments, is not used to limit
The practical range determined and invented.
Claims (7)
1. a kind of melt impregnation device of continuous fiber reinforced thermoplastic resin, including exhibition guide frame, preheating device, fuse dipping die
Tool, cooling device, traction device and extruder, it is characterised in that: melt impregnation mold includes at least one slit roller, described
Slit roller is radially provided with the slit that perforative width is less than its radius, and the slit roller can be carried out along its circumferencial direction
Positive and negative both direction rotation, it further includes 1-6 dispersion roller, the dispersion roller and the slit roller that rotating range, which is 0- ± 90 °,
It is staggered in arrangement.
2. melt impregnation device according to claim 1, it is characterised in that: the slit two sides are arc transition, circular arc
Radius is 1-20mm.
3. melt impregnation device according to claim 1, it is characterised in that: the rotating range of the slit roller be 0- ±
60°。
4. melt impregnation device according to claim 1, it is characterised in that: the diameter range of the slit roller is 10-
100mm。
5. melt impregnation device according to claim 4, it is characterised in that: the diameter range of the slit roller is 20-
40mm。
6. a kind of preparation method of the melt impregnation device of continuous fiber reinforced thermoplastic resin, includes the following steps:
(a) continuous tow is pre-dispersed by exhibition guide frame progress fiber, and be dried by preheating device；
(b) step (a) treated continuous tow is alternately bypassed to the dispersion roller in melt impregnation mold, and is passed through narrow
Roller is stitched, the slit that perforative width is less than its radius is radially provided in the slit roller, can be adjusted and be connected by rotating slit roller
Continuous wrap angle of the fibre bundle in melt impregnation mold, and can change tension suffered by fibre bundle in mold, the slit roller energy
Enough to carry out positive and negative both direction rotation along its circumferencial direction, rotating range is 0- ± 90 °；It will be plasticized by extruder simultaneously
Good thermoplastic melt squeezes into melt impregnation mold, and continuous tow is dispersed under the action of dispersing roller and slit roller
And dipping；
(c) step (b) treated continuous fiber and thermoplastic melt are subjected to cooling and shaping by cooling device,
The continuous production under the traction of traction device obtains the continuous fiber reinforced thermoplastic resin.
7. preparation method according to claim 6, it is characterised in that: the continuous tow is selected from glass fibre, carbon fiber
At least one of dimension, basalt fibre or aramid fiber.
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| CN107415286B (en) * | 2017-05-08 | 2019-10-22 | 北京化工大学 | It is a kind of can on-line tuning tension fibre reinforced composites melt impregnation device and preparation method |
| CA3080701A1 (en) * | 2017-11-07 | 2019-05-16 | Toray Industries, Inc. | Fiber-reinforced thermoplastic resin filament and shaped product of same |
| CN108407300A (en) * | 2018-04-02 | 2018-08-17 | 西安交通大学 | Continuous fiber reinforced composites 3D printing silk material preparation method and device |
| CN109177224A (en) * | 2018-08-20 | 2019-01-11 | 浙江亚太机电股份有限公司 | Equipment for the resin-coated layer in carbon fiber bundle surface |
| CN110001090A (en) * | 2019-04-04 | 2019-07-12 | 东南大学 | A kind of preparation method of continuous fiber reinforced thermoplastic composite material |
| CN111438967B (en) * | 2020-04-15 | 2022-02-01 | 北京机科国创轻量化科学研究院有限公司 | Forming device and process of long fiber reinforced thermoplastic resin composite material |
| CN111791515B (en) * | 2020-06-09 | 2024-06-28 | 江苏集萃先进高分子材料研究所有限公司 | Large-tow long carbon fiber thermoplastic composite material and preparation method thereof |
| CN111645228A (en) * | 2020-06-12 | 2020-09-11 | 上海大学 | Preparation method of twisted continuous natural fiber prepreg |
| CN111702985B (en) * | 2020-06-29 | 2021-04-06 | 哈尔滨坤程科技有限公司 | Carbon fiber composite material and preparation system and preparation method thereof |
| CN112549586B (en) * | 2020-11-11 | 2022-12-27 | 青岛海力威新材料科技股份有限公司 | Static infiltration device for rapid pultrusion of composite material |
| CN112847924B (en) * | 2021-01-07 | 2022-06-10 | 中广核俊尔(浙江)新材料有限公司 | Low-emission, low-fiber-floating, low-warpage and ultra-dispersed long glass fiber polyamide composite material and preparation method thereof |
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