CN106903906A - 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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- CN106903906A CN106903906A CN201710288630.7A CN201710288630A CN106903906A CN 106903906 A CN106903906 A CN 106903906A CN 201710288630 A CN201710288630 A CN 201710288630A CN 106903906 A CN106903906 A CN 106903906A
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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 device and preparation method of a kind of continuous fiber reinforced thermoplastic resin, the melt impregnation device includes exhibition guide frame, preheating device, melt impregnation mould, cooling device, draw-gear and extruder, melt impregnation mould includes at least one slit roller, slit is provided with slit roller, slit roller can adjust rotation.The device also includes multiple dispersion rollers, and dispersion roller and slit roller are equidistantly staggered in arrangement.Melt impregnation device and preparation method according to continuous fiber reinforced thermoplastic resin proposed by the invention, wrap angle that can be with 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 prepare 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 technology
Continuous fiber reinforced thermoplastic resin based composites be one kind by continuous fiber as reinforcement, with thermoplastic resin
Fat is used as matrix, a kind of high-performance composite materials being prepared into by certain process combining.Due to reinforcing fiber be it is continuous,
Therefore compared with chopped fiber or long fibre reinforced thermoplastic resin based composite material, continuous fiber reinforced thermoplastic resin base is combined
Material has more excellent mechanical performance and mechanical property, with good specific stiffness and specific strength, toughness is high, impact resistance
Can good, dimensional stability be high, corrosion-resistant and the low many merits of water absorption rate.Thus it is widely used in communications and transportation, aviation boat
My god, the industry such as sports equipment, industrial products and construction material.
The conventional dipping method of continuous fiber reinforced thermoplastic resin is melt impregnation.Melt impregnation is to utilize thermoplastic
The heating melting characteristic of property resin, makes fibre bundle by the way that in the dipping tank full of polymer melt, fibre bundle is in certain tension force
Impregnated with dispersion is obtained under pressure effect.In order to realize good fiber dispersion and dipping, using similar sinusoidal in dipping die cavity
The bending dipping runner of curve, the dipping runner of undaform, improved curved channel impregnate die head, are set in dipping runner and led
Roll dies etc..The appearance of the impregnation mold of different shape and structure is provided to reinforcing fiber tow and launches effect, increases fiber
Tension force and pressure of the beam in impregnation mold, realize the sufficient wetting fibre tow of high-viscosity polymer melt.Therefore dipping former
The structure design of tool turns into the critical component for realizing 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 with the mould, have seal wire block on runner, sub-wire hole is provided with seal wire block,
Sub-wire hole flows to fiber impregnation and is connected；Continuous fiber enters the heat of mould impregnation mold and melting through the sub-wire hole on seal wire block
Plastic resin is contacted, through annular ripple revolving body mandrel and the ring between external surface shape identical matrix cavity inner wall therewith
Shape, corrugated dipping runner, fibre bundle are 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 former, the equipment includes fiber with thermal, melting
Impregnation mold and secondary rolling device；Melt impregnation mould in the device by several equidistant arrangements tension roll assembly into,
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 mould is made up of housing, upper die head and lower die head.Upper and lower die head is correspondingly arranged the crest dipping face with mutual dislocation, up and down
Die head mutually fastens to form dipping passage.The mould dipping method is that impregnation mold is in be vertically arranged, continuous fiber both sides difference
It is 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,
Mould is heated, and continuous fiber belt is influenceed 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, its equipment is
Fiber channel in melt impregnation head sets the pre-dispersed area of fiber, thermoplastic resin-impregnated fibers area and fiber redisperse area, 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；Pre-dispersing device is provided with the pre-dispersed area of fiber, fiber redisperse is provided with redisperse device in area.
There is problems with existing continuous fiber dipping thermoplastic resin immersion system：1. fibre bundle dipping runner form is consolidated
Fixed, dipping form is single；2. tension force suffered by fibre bundle is difficult to regulation measurement in impregnation mold；3. fibre bundle divides in impregnation mold
Dissipate effect poor, cause dipping effect poor；4. immersion system is complex-shaped, processes relatively difficult.
The content of the invention
The purpose of the present invention is directed to the above mentioned problem of prior art presence, there is provided a kind of continuous fiber reinforced thermoplastic tree
Fat 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
Put, melt impregnation mould, cooling device, draw-gear and extruder, melt impregnation mould includes at least one slit roller, described
Slit of the width less than its radius is provided with slit roller, the slit roller can adjust rotation.
Preferably, the slit two ends are arc transition, and arc radius scope is 1-20mm.
Preferably, the melt impregnation device also includes 1-6 dispersion roller, and dispersion roller and slit roller are staggered in arrangement.
Preferably, it is additionally provided with godet between the exhibition guide frame and the preheating device.
Preferably, the slit roller can carry out positive and negative both direction rotation, and rotating range is 0- ± 90 °.
Present invention also offers the preparation method of the melt impregnation device using above-mentioned continuous fiber reinforced thermoplastic resin,
Comprise the following steps：
A () by opening up guide frame, to carry out fiber pre-dispersed by continuous tow, and be dried treatment by preheating device；
Continuous tow b () processes the step (a) after replaces the dispersion roller bypassed in melt impregnation mould, and wears
Slit roller is crossed, wrap angle of the continuous tow in impregnation mold can be adjusted by rotating slit roller, and can change in mould
Tension force suffered by fibre bundle；The thermoplastic melt that will have been plastified by extruder simultaneously clamp-ons melt impregnation mould, continuous fine
Dimension beam is disperseed and is impregnated in the presence of dispersion roller and slit roller；
C () is cooled down the continuous fiber after the step (b) treatment and thermoplastic melt by cooling device
Sizing, continuously produces under the traction of draw-gear, obtains the continuous fiber reinforced thermoplastic resin.
Preferably, the continuous tow be selected from 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 in polyurethane, polyformaldehyde.
Preferably, the hauling speed of the draw-gear is between 0-1m/s.
Melt impregnation device and preparation method according to continuous fiber reinforced thermoplastic resin proposed by the 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-
Leaching band.
Compared with prior art, the melt impregnation device and dipping method of this continuous fiber reinforced thermoplastic resin have following
Advantage：
1. the melt impregnation mould that the present invention is provided, is made up of dispersion roller and slit roller, and 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, soak
Stain form is 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 disperseing roller and slit roller, abundant by slit conduit while making fiber fully dispersed
Dipping, while the tension force that slit roller rotation is produced further promotes thermoplastic melt to impregnate fibre bundle；
4. present invention process process is simple, and process conditions are easily achieved, while impregnation mold structure proposed by the present invention is easy
Realized in processing.
Brief description of the drawings
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 representations on the outside of slit roller handle of the present invention；
In figure, 1, continuous tow；2nd, guide frame is opened up；3rd, godet；4th, preheating device；5th, melt impregnation mould；6th, disperse
Roller；7th, slit roller；71st, slit；72nd, handle；8th, cooling device；9th, draw-gear；10th, extruder.
Specific embodiment
The present invention is further elaborated with specific embodiment below in conjunction with the accompanying drawings, but the present invention is not limited to implement
Example.
Embodiment one
The melt impregnation device of the continuous fiber reinforced thermoplastic resin provided referring to Fig. 1 and Fig. 2, the present invention includes exhibition silk
Frame 2, godet 3, preheating device 4, melt impregnation mould 5, cooling device 8, draw-gear 9 and extruder 10.
Melt impregnation mould 5 in the present embodiment is made up of 3 dispersion rollers 6 and 2 slit rollers 7.The dispersion diameter of roller 6
The a diameter of 20mm of slit roller 7 described in 20mm；Slit 71, the 2mm high of slit 71,30mm long are provided with slit roller 7；The two ends of slit 71
It is arc transition, arc radius scope is 2mm, and slit roller 7 can positive and negative rotation.
Roller 6 and slit roller 7 is disperseed equidistantly to be staggered in arrangement in above-mentioned melt impregnation mould 5, adjacent dispersion roller 6 and slit roller
Centre-to-centre spacing between 7 is 40mm.Roller 6 is disperseed to maintain static in the melt impregnation mould 5, slit roller 7 can be by conjunction
The handle 72 positioned at the outside of melt impregnation mould 5 carry out positive and negative both direction rotation, scale can be indicated on handle 72,0 ° right
Slit 71 is horizontal position in answering roller 7, and rotating range is 0- ± 90 °.
Present invention also offers the preparation method of the melt impregnation device using above-mentioned continuous fiber reinforced thermoplastic resin,
Comprise the following steps：
A () by opening up guide frame 2, to carry out fiber pre-dispersed by continuous tow 1, and be dried place by preheating device 4
Reason, preheating temperature is 190 DEG C.
Continuous tow 1 b () processes the step (a) after replaces the dispersion roller 6 bypassed in melt impregnation mould 5,
And through the slit 71 of slit roller 7, wrap angle of the continuous tow 1 in dip roll can be adjusted by rotating slit roller 7, and can be with
Change tension force suffered by fibre bundle in mould；The thermoplastic melt that will have been plastified by extruder 10 simultaneously clamp-ons melt impregnation
Mould 5,190 DEG C of 10 feeding section heating-up temperature of extruder, 210 DEG C of fluxing zone heating-up temperature, homogenizing zone and extruder head temperature are
230 DEG C, 230 DEG C of the heating-up temperature of melt impregnation mould 5；Continuous tow 1 is obtained in the presence of dispersion roller 6 and slit roller 7
Dispersion and dipping；Fibre bundle after dipping is involved by the sizing mouth mold sizing of a diameter of 2.8mm；
C () is cooled down the continuous fiber after the step (b) treatment and thermoplastic melt by cooling device 8
Sizing, continuously produces under the traction of draw-gear 9, obtains 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 regulation between 0- ± 90 ° in the step (b).
The hauling speed 2m/min of draw-gear 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 5, sample for axially intercepting 50mm ± 1mm long；Sample
20h ± 1h is dried in the baking oven for putting 50 DEG C ± 2 DEG C into, sample is taken out and is weighed each sample mass (m1), it is accurate to 0.001g；With
It is afterwards 24h ± 0.5h in 23 DEG C ± 0.5 DEG C of distilled water by sample immersion temperature, sample taking-up is removed into surface moisture with filter paper
Claim to obtain sample mass (m again afterwards2), it is accurate to 0.001g；Every group of batten repeats above testing procedure, relative to sample mass
Water suction percentage is according to formulaCan be calculated.
Tensile strength is the important indicator for reflecting prepreg mechanical property, according to GB/T1477-2005《Fibre reinforced plastics
Erichsen test method》, the prepreg prepared by the present embodiment is prepared into thickness d=4mm, intermediate parallel section width b=
The standard testing batten of 10mm, and tensile property test is carried out on measurer for pulling force, tensile test machine clamp spacing from
115mm, loading velocity 2mm/min, tensile stress is according to formulaCan 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 identical with embodiment one, and it is different
Part is：The present embodiment is all using slit roller 7, and a diameter of 30mm of the slit roller 7, the slit 71 of the slit roller 7 is high
5mm, 30mm long, the two ends of slit 71 are arc transition, and arc radius scope is 5mm, and slit roller 7 can positive and negative rotation；Adjacent slots
Centre-to-centre spacing between roller is 50mm.Continuous tow used 10 is carbon fiber in the present embodiment, and thermoplastic melt is nylon.
210 DEG C of 10 feeding section heating-up temperature of extruder, 230 DEG C of fluxing zone heating-up temperature, homogenizing zone and extruder head temperature
It is 250 DEG C, 250 DEG C of the heating-up temperature of melt impregnation mould 5；Continuous tow 1 is obtained in the presence of dispersion roller 6 and slit roller 7
To dispersion and dipping；Fibre bundle after dipping is involved by the sizing mouth mold sizing of a diameter of 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 identical with embodiment one, and it is different
Part is：The present embodiment dispersion a diameter of 30mm of roller 6 used, a diameter of 30mm of the slit roller 7, the slit roller 7 it is narrow
71 5mm high, 30mm long are stitched, the two ends of slit 71 are arc transition, and arc radius scope is 5mm, and slit roller 7 can positive and negative rotation；Phase
Centre-to-centre spacing between neighbour's dispersion roller and slit roller is 50mm.Continuous tow used 10 is aramid fiber, thermoplastic in the present embodiment
Property resin melt be polyethylene.
190 DEG C of 10 feeding section heating-up temperature of extruder, 210 DEG C of fluxing zone heating-up temperature, homogenizing zone and extruder head temperature
It is 230 DEG C, 230 DEG C of the heating-up temperature of melt impregnation mould 5；Continuous tow 1 is obtained in the presence of dispersion roller 6 and slit roller 7
To dispersion and dipping；Fibre bundle after dipping is involved by the sizing mouth mold sizing of a diameter of 2.8mm.Experimental data is see following
Table 3.
Table 3
As described above, just can preferably realize the present invention, above-described embodiment is only present pre-ferred embodiments, not for limiting
The practical range determined and invent.
Claims (10)
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, draw-gear and extruder, it is characterised in that：Melt impregnation mould includes at least one slit roller, described narrow
Slit of the width less than its radius is provided with seam roller, the slit roller can adjust rotation.
2. melt impregnation device according to claim 1, it is characterised in that：The slit both sides are arc transition, circular arc
Radius is 1-20mm.
3. melt impregnation device according to claim 1, it is characterised in that：Also include 1-6 dispersion roller, the dispersion roller
It is staggered in arrangement with the slit roller.
4. melt impregnation device according to claim 1, it is characterised in that：The slit roller can carry out positive and negative two
Direction rotates, and rotating range is 0- ± 90 °.
5. melt impregnation device according to claim 4, it is characterised in that：The rotating range of the slit roller be 0- ±
60°。
6. melt impregnation device according to claim 1, it is characterised in that：The diameter range of the slit roller is 10-
100mm。
7. melt impregnation device according to claim 6, it is characterised in that：The diameter range of the slit roller is 20-
40mm。
8. a kind of preparation method of the melt impregnation device of continuous fiber reinforced thermoplastic resin, comprises the following steps：
A () by opening up guide frame, to carry out fiber pre-dispersed by continuous tow, and be dried treatment by preheating device；
Continuous tow b () processes the step (a) after alternately bypasses dispersion roller in melt impregnation mould, and through narrow
Seam roller, can adjust wrap angle of the continuous tow in melt impregnation mould, and can change in mould by rotating slit roller
Tension force suffered by fibre bundle；The thermoplastic melt that will have been plastified by extruder simultaneously clamp-ons melt impregnation mould, continuous fine
Dimension beam is disperseed and is impregnated in the presence of dispersion roller and slit roller；
C continuous fiber after the step (b) treatment and thermoplastic melt are carried out cooling and shaping by () by cooling device,
Continuously produced under the traction of draw-gear, obtain the continuous fiber reinforced thermoplastic resin.
9. preparation method according to claim 8, it is characterised in that：It is fine that the continuous tow is selected from glass fibre, carbon
At least one in dimension, basalt fibre or aramid fiber.
10. preparation method according to claim 8, it is characterised in that：The slit roller can carry out positive and negative both direction
Rotation, rotating range is 0- ± 90 °.
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| CN201710288630.7A CN106903906B (en) | 2017-04-27 | 2017-04-27 | A kind of continuous fiber reinforced thermoplastic resin melt impregnation device and preparation method |
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| CN201710288630.7A CN106903906B (en) | 2017-04-27 | 2017-04-27 | A kind of continuous fiber reinforced thermoplastic resin melt impregnation device and preparation method |
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| CN106903906B CN106903906B (en) | 2019-04-16 |
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| CN107415286A (en) * | 2017-05-08 | 2017-12-01 | 北京化工大学 | It is a kind of can on-line tuning tension force fibre reinforced composites melt impregnation device and preparation method |
| 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 |
| CN111094649A (en) * | 2017-11-07 | 2020-05-01 | 东丽株式会社 | Fiber-reinforced thermoplastic resin filament and molded article thereof |
| CN111438967A (en) * | 2020-04-15 | 2020-07-24 | 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 |
| CN111645228A (en) * | 2020-06-12 | 2020-09-11 | 上海大学 | Preparation method of twisted continuous natural fiber prepreg |
| CN111702985A (en) * | 2020-06-29 | 2020-09-25 | 哈尔滨坤程科技有限公司 | Carbon fiber composite material and preparation system and preparation method thereof |
| CN111791515A (en) * | 2020-06-09 | 2020-10-20 | 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 |
| CN112549586A (en) * | 2020-11-11 | 2021-03-26 | 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107415286A (en) * | 2017-05-08 | 2017-12-01 | 北京化工大学 | It is a kind of can on-line tuning tension force fibre reinforced composites melt impregnation device and preparation method |
| CN111094649B (en) * | 2017-11-07 | 2023-01-06 | 东丽株式会社 | Fiber-reinforced thermoplastic resin filament and molded article thereof |
| CN111094649A (en) * | 2017-11-07 | 2020-05-01 | 东丽株式会社 | Fiber-reinforced thermoplastic resin filament and molded article thereof |
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| 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 |
| CN111438967A (en) * | 2020-04-15 | 2020-07-24 | 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 |
| CN111791515A (en) * | 2020-06-09 | 2020-10-20 | 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 |
| CN111702985A (en) * | 2020-06-29 | 2020-09-25 | 哈尔滨坤程科技有限公司 | Carbon fiber composite material and preparation system and preparation method thereof |
| CN112549586A (en) * | 2020-11-11 | 2021-03-26 | 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 |
| CN112847924A (en) * | 2021-01-07 | 2021-05-28 | 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 |
| 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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| CN106903906B (en) | 2019-04-16 |
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