CN104210118A - Yarn guide bar for untying carbon fiber bundles and application thereof - Google Patents
Yarn guide bar for untying carbon fiber bundles and application thereof Download PDFInfo
- Publication number
- CN104210118A CN104210118A CN201310211967.XA CN201310211967A CN104210118A CN 104210118 A CN104210118 A CN 104210118A CN 201310211967 A CN201310211967 A CN 201310211967A CN 104210118 A CN104210118 A CN 104210118A
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- carbon fiber
- thread
- resin
- rod
- carrier rod
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
Abstract
The invention relates to a yarn guide bar for untying carbon fiber bundles and an applciation. The yarn guide bar takes the shape of a semicircular arc, and consists of not less than four untying bars and bundling bars in total, wherein the untying bars and the bundling bars are arranged at intervals along the horizontal direction or arranged with one above another along the vertical direction; the exradius of the untying bars is R1, the inradius of the bundling bars is R2, R1 is greater than R2, and the ratio of R1 to R2 is equal to 1.5-2.0; the included angle between a carbon fiber bundle and the yarn guide bar is 30-60 degrees; the contact surface of the yarn guide bar is cambered, trapezoidal or V-shaped. Through the yarn guide bar with a specific design structure for untying carbon fiber bundles, the problem of impregnation of carbon fiber bundles and thermoplastic resin is solved excellently, so that a high-performance carbon fiber reinforced thermoplastic resin-based composite material is successfully prepared, and the material has broad application prospect in the fields of aviation, automobiles, communication, and mechano-electronic appliances due to excellent tensile strength, bending strength and flexural modulus.
Description
Technical field
The present invention relates to carbon fibre composite technical field, be specifically related to a kind of thread-carrier rod for disperse carbon fibers bundle and application thereof, particularly by described thread-carrier rod for the preparation of the high performance fibre reinforced thermoplas tic resin composite of high microsteping content.
Background technology
Compared with thermosetting resin base carbon fiber composite material, thermoplastic resin-based carbon fiber composite has the advantages such as impact flexibility is high, molding cycle is short, prepreg very easily reclaims reprocessing to depositing without particular/special requirement, goods, it is quick, pollution-free to realize, automatic continuous production.Therefore, thermoplastic resin-based carbon fiber composite largely solves that the intrinsic fracture toughness of thermosetting resin base carbon fiber composite material is poor, environmental suitability is poor, the process-cycle is long, production environment is poor, be difficult to the shortcomings such as recycling, and the development for macromolecule carbon fibrous composite provides new approach.
But the melt viscosity of thermoplastic resin is general all higher, is therefore unfavorable for the dispersion of carbon fiber and the dipping of matrix resin in process.Adopt traditional fibre reinforced composites processing method fully cannot realize carbon fiber being uniformly distributed and the thorough impregnation of resin matrix to carbon fiber in thermoplastic resin matrix.The existing bibliographical information preparation method of several fibre reinforced thermoplas tic resin composite, as short fiber completion method, fabric coating method, thin film melt method etc., although they improve toughness and the percentage elongation of goods all to some extent, but still exist between carbon fiber and thermoplastic resin and can not be uniformly distributed, the abundant dipping of thermoplastic resin to carbon fiber cannot be realized completely.
Summary of the invention
For the defect that prior art exists, technical problem to be solved by this invention is a kind of thread-carrier rod for disperse carbon fibers bundle and application thereof, particularly by described thread-carrier rod for the preparation of the high performance fibre reinforced thermoplas tic resin composite of high microsteping content, thus realize the abundant dipping of thermoplastic resin to carbon fiber.
Thread-carrier rod for disperse carbon fibers bundle of the present invention, its structure and with the configuration of continuous carbon fibre bundle as shown in Figure 1.The shape of described thread-carrier rod is semicircular arc, by dispersion rod and boundling rod form, wherein dispersion rod and boundling rod interconnected, its allocation position, as the case may be can in the horizontal direction interval configure, also can vertically just configure.When carbon fiber bundle to contact with the excircle of dispersion rod by time, fiber is spread out by fibrillation, when carbon fiber bundle to contact with the inner periphery of boundling rod by time, fiber is drawn in by boundling.
The number needs of described thread-carrier rod wants many configurations, and according to its quantity of status adjustment of carbon fiber bundle, the minimum number of dispersion rod and boundling rod should be no less than 4, thus reaches the object that fibre bundle shredding is disperseed.
Circular shape and size about thread-carrier rod:
If the exradius of dispersion rod is R1, the inner circle radius of boundling rod is R2, then both should meet the relation of R1>R2, and this realizes one of key character of the present invention.As shown in Figure 1, continuous carbon fibre bundle passes through from the cylindrical side of dispersion rod, then passes through along the inner circle side of boundling rod, is changed by such circular shape and replacing of curve, makes produce mutually mobile between fiber thus realize the dipping of resin to fiber.In the present invention, the scope of R1/R2, between 1.5-2.0, exceeds the dipping effect that this scope does not then reach.
The size of thread-carrier rod and disposition interval:
The distance of the size of thread-carrier rod and each other (i.e. dispersion side and boundling excellent) is not particularly limited, and can determine according to the size of manufacturing equipment, makes angle between carbon fiber bundle and thread-carrier rod between 30 ° ~ 60 °.
The cross-sectional configuration of thread-carrier rod:
The cross-structural morphology of thread-carrier rod is also one of key character of the present invention.In order to regulate the contact condition between fibre bundle and thread-carrier rod surface, specially the contact surface partial design of thread-carrier rod is become curve form, circular arc type as shown in Figure 2, ladder type, V-type etc., thus make fibre bundle realize Multi-contact in traveling process, to reach dipping effect better.Of course, the contact surface portion profile of thread-carrier rod of the present invention but be not limited to Fig. 2 structure.
Thread-carrier rod of the present invention can be used for preparing the high performance fibre reinforced thermoplas tic resin composite of high microsteping content, be applied in equipment as shown in Figure 3 by described thread-carrier rod, specifically, in the resin impregnation tank shown in Fig. 3, be namely provided with the thread-carrier rod of multiple given shape of the present invention.In this Fig. 3, from left to right, be followed successively by carbon fiber bundle, guide roller, resin impregnation tank, cooling bath, derivation roller and pelleter, by carbon fiber bundle, they are connected in turn.In addition, described equipment also comprises extruder, and thermoplastic resin is injected in resin impregnation tank after extruder heating and melting.
The preparation method of described fibre reinforced thermoplas tic resin composite, specifically comprises the following steps:
Drawn by the carbon fiber bundle 1 being applied with the sequential like of some tension, through guiding roller 2 to enter resin impregnation tank 3, thermoplastic resin is injected in resin impregnation tank 3 after extruder 4 heating and melting simultaneously, makes whole resin impregnation tank be melted resin and fills.The thread-carrier rod 5 of multiple given shape is installed in resin impregnation tank, carbon fiber bundle with thread-carrier rod contact process in by friction obtain shredding dispersion, molten resin is enable to enter into fibre bundle inside, thus solve the abundant dipping of thermoplastic resin to carbon fiber, reach the object realizing high performance fibre reinforced thermoplastic composite.Drawn from resin impregnation tank by the carbon fiber bundle after thermoplastic resin impregnated, drawn by derivation roller 7 after cooling bath 6 cools, then send into cut-out in pelleter 8, namely obtain carbon fiber reinforced thermoplastic resin material grain.
The carbon fiber reinforced thermoplastic resin material grain obtained according to the invention described above method, the ratio according to different carbon fibers and resin can realize different fiber contents.Wherein carbon fiber content is generally advisable between 20% ~ 50%.
Carbon fiber bundle:
The inventive method is applicable to the continuous carbon fibre bundle of general type sold in the market, and the filament diameter of carbon fiber bundle is 7 ~ 10 μm, and the number of fiber in fibre bundle is 6000 ~ 24000, and the hot strength of carbon fiber is between 3000 ~ 6000Mpa.
Thermoplastic resin:
The thermoplastic resin that the inventive method is suitable for comprises the generally conventional thermoplastic resin such as PP, PA6, PA66, PC and ABS.
Beneficial effect:
The present invention is by the thread-carrier rod for disperse carbon fibers bundle of design given shape, be applied to the preparation of fibre reinforced thermoplas tic resin composite, solve the flooding problems of carbon fiber bundle and thermoplastic resin very well, thus successfully obtained a kind of thermoplastic carbon fiber resin concentrates containing high microsteping content and the thermoplastic resin-based composite of high performance fibre reinforced.Through Performance Detection, this composite has the mechanical properties such as excellent hot strength, bending strength and bending modulus, has broad application prospects in fields such as Aero-Space, automobile, communication, mechano-electronic electrical equipment.
Accompanying drawing explanation
Fig. 1 is the structure of thread-carrier rod of the present invention and the configuration schematic diagram with continuous carbon carbon fiber bundle.
Fig. 2 is several cross-structural morphology schematic diagrames of thread-carrier rod of the present invention.
Fig. 3 is the preparation facilities structural representation of thermoplastic carbon fiber resin composite materials of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, technical scheme of the present invention is described in further detail, but described embodiment does not limit the scope of the invention.Should be noted that, following examples are only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to the technical scheme of invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in right of the present invention.
Embodiment 1
Fig. 1 is the structure of thread-carrier rod of the present invention and the configuration schematic diagram with continuous carbon fibre bundle, and the shape of described thread-carrier rod is semicircular arc, and the angle between fibre bundle 1 and thread-carrier rod is 30 ° ~ 60 °.Thread-carrier rod forms by disperseing rod 9 and boundling rod 10, and the two is interconnected, can configure at interval in the horizontal direction as the case may be, also can vertically just configure.The exradius of dispersion rod 9 is R1, and the inner circle radius of boundling rod 10 is R2, wherein R1>R2, R1/R2=1.5-2.0.
Fig. 2 is several cross-structural morphology schematic diagrames of thread-carrier rod of the present invention, can be circular arc type, ladder type, V-type etc., thus makes fibre bundle realize Multi-contact in traveling process, to reach dipping effect better.
Fig. 3 is the preparation facilities structural representation of thermoplastic carbon fiber resin composite materials of the present invention, comprises and guides roller 2, resin impregnation tank 3, cooling bath 6, derivation roller 7 and pelleter 8, they be connected in turn by carbon fiber bundle 1.The thread-carrier rod 5 of multiple given shape is provided with in described resin impregnation tank 3.In addition, described device also comprises extruder, and thermoplastic resin is injected in resin impregnation tank 3 after extruder 4 heating and melting, thus prepares thermoplastic carbon fiber resin composite materials further.
Embodiment 2 ~ 7
According to the preparation facilities shown in Fig. 3, the continuous carbon fibre bundle used is the T300 product (fiber diameter 7 μm of toray company, the number of fiber of tow 12000, hot strength 3530Mpa), thermoplastic resin selects PA66, PA6, PP, PC and ABS respectively, according to the process conditions of setting in table 1, prepare fibre reinforced thermoplastic resin compound material grain respectively, the mechanical property of the various composite material grains obtained is as shown in table 2, and table 3 is the mechanical performance data of the thermoplastic resin not adding fibre bundle.
Table 1
| ? | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 |
| Thread-carrier rod diameter (mm) | 25 | 25 | 25 | 25 | 25 | 25 |
| Disperse excellent arc radius R1 (mm) | 75 | 80 | 75 | 75 | 75 | 75 |
| Boundling rod arc radius R2 (mm) | 50 | 40 | 50 | 50 | 50 | 50 |
| R1/R2 | 1.5 | 2.0 | 1.5 | 1.5 | 1.5 | 1.5 |
| Thermoplastic resin | PA66 | PA66 | PA6 | PP | ABS | PC |
| Carbon fiber | T300 | T300 | T300 | T300 | T300 | T300 |
Table 2
| ? | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 |
| Hot strength (MPa) | 270 | 330 | 260 | 60 | 150 | 200 |
| Bending strength (MPa) | 370 | 493 | 350 | 105 | 180 | 294 |
| Bending modulus (GPa) | 16.2 | 36.5 | 15.9 | 11.5 | 13.2 | 17.4 |
| Notch impact strength (KJ/m 2） | 12 | 18 | 13 | 10 | 12 | 15 |
| Carbon fiber content (%) | 20 | 50 | 20 | 25 | 20 | 30 |
| Resin-dipping rate (% by weight) | 99 | 95 | 96 | 99 | 97 | 93 |
Table 3
| ? | Comparative example 2 | Comparative example 4 | Comparative example 5 | Comparative example 6 | Comparative example 7 |
| Hot strength (MPa) | 65 | 58 | 22 | 35 | 60 |
| Bending strength (MPa) | 71 | 68 | 44 | 60 | 80 |
| Bending modulus (GPa) | 1.8 | 1.5 | 1.1 | 2.0 | 2.1 |
| Notch impact strength (KJ/m 2） | 1.5 | 2.5 | 0.8 | 3.5 | 5.0 |
| Thermoplastic resin | PA66/100 | PA6/100 | PP/100 | ABS/100 | PC/100 |
| Carbon fiber content (%) | 0 | 0 | 0 | 0 | 0 |
Composite property is evaluated:
(1) carbon fiber content
Composite material grain is put into sulfuric acid solution, after resinous principle dissolves completely, tries to achieve according to weight rate.
(2) resin-dipping rate
The composite material grain made is split, detects not by the dried fibres of resin-dipping and take its weight, solving according to following formula.
Resin-dipping rate (% by weight)=100-Wdf/ (Wp × Wf)
Wherein: Wdf is that Wp is the gross weight of material grain, and Wf is carbon fiber content not by the dried fibres weight of resin-dipping in material grain.
(3) hot strength
Experiment gained material grain injection machine is made standard specimen, measures according to testing standard GB/T1040-2006.
(4) bending strength and bending modulus
Experiment gained material grain injection machine is made standard specimen, measures according to testing standard GB/T9341-2008.
(5) notch impact strength
Experiment gained material grain injection machine is made standard specimen, measures according to testing standard GB/T1843-2008.
As can be seen from the test result of above-mentioned table 2, table 3, the fibre reinforced thermoplas tic resin composite utilizing the inventive method to make, the abundant dipping of thermoplastic resin to carbon fiber can be realized, have excellent mechanical performance (the blank thermoplastic resin far above not adding carbon fiber), its goods have broad application prospects in fields such as Aero-Space, automobile, communication, mechano-electronic electrical equipment.
Claims (9)
1. for a thread-carrier rod for disperse carbon fibers bundle, it is characterized in that, the shape of described thread-carrier rod is semicircular arc, is made up of dispersion rod and boundling rod, the two interval configuration in the horizontal direction, or vertically height configuration.
2. thread-carrier rod according to claim 1, is characterized in that, described dispersion is excellent and boundling rod sum is minimum is no less than 4.
3. thread-carrier rod according to claim 1, is characterized in that, the exradius of described dispersion rod is R1, and the inner circle radius of boundling rod is R2, R1>R2.
4. thread-carrier rod according to claim 3, is characterized in that, R1/R2=1.5-2.0.
5. thread-carrier rod according to claim 1, is characterized in that, the angle between described carbon fiber bundle and thread-carrier rod is 30 ° ~ 60 °.
6. thread-carrier rod according to claim 1, is characterized in that, the contact surface of described thread-carrier rod is circular arc type, ladder type or V-type.
7. a fibre reinforced thermoplas tic resin composite's preparation method, is characterized in that, comprises the following steps:
Drawn by the carbon fiber bundle being applied with the sequential like of tension force, through guiding roller to enter resin impregnation tank, thermoplastic resin is injected in resin impregnation tank after extruder heating and melting simultaneously, makes whole resin impregnation tank be melted resin and fills; Carbon fiber bundle by with the multiple thread-carrier rod contact processes be located in resin impregnation tank in obtain shredding by friction and disperse, make molten resin enter into fibre bundle inside; Finally draw by the carbon fiber bundle after thermoplastic resin impregnated from resin impregnation tank, drawn by derivation roller after cooling bath cooling, then send in pelleter and cut off, namely obtain carbon fiber reinforced thermoplastic resin material granules composite material.
8. method according to claim 7, is characterized in that, described carbon fiber bundle, and its filament diameter is 7 ~ 10 μm, and number of fiber is 6000 ~ 24000, and the hot strength of carbon fiber is 3000 ~ 6000Mpa.
9. method according to claim 7, is characterized in that, described thermoplastic resin comprises PP, PA6, PA66, PC or ABS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211967.XA CN104210118A (en) | 2013-05-30 | 2013-05-30 | Yarn guide bar for untying carbon fiber bundles and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310211967.XA CN104210118A (en) | 2013-05-30 | 2013-05-30 | Yarn guide bar for untying carbon fiber bundles and application thereof |
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| CN104210118A true CN104210118A (en) | 2014-12-17 |
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| CN201310211967.XA Pending CN104210118A (en) | 2013-05-30 | 2013-05-30 | Yarn guide bar for untying carbon fiber bundles and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915013A (en) * | 2017-03-16 | 2017-07-04 | 湖州艾历克工业材料有限公司 | A kind of mould for producing continuous fiber reinforced thermoplastic plastic |
| CN112500185A (en) * | 2020-12-23 | 2021-03-16 | 陕西煤业化工技术研究院有限责任公司 | Continuous preparation method and production device of flexible carbon-carbon composite material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1157913A (en) * | 1966-09-19 | 1969-07-09 | Owens Corning Fiberglass Corp | Glass Fibre Elastomeric Product |
| US5236743A (en) * | 1989-09-14 | 1993-08-17 | Vetrotex Saint Gobain | Method for continuously coating fibers |
| CN101695873A (en) * | 2009-10-30 | 2010-04-21 | 广州科苑新型材料有限公司 | Fiber bundle fuse dipping die head for producing long fiber reinforced plastic and dipping method |
| CN203305524U (en) * | 2013-05-30 | 2013-11-27 | 李芳丽 | Yarn guide bar for untying carbon fiber bundles |
-
2013
- 2013-05-30 CN CN201310211967.XA patent/CN104210118A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1157913A (en) * | 1966-09-19 | 1969-07-09 | Owens Corning Fiberglass Corp | Glass Fibre Elastomeric Product |
| US5236743A (en) * | 1989-09-14 | 1993-08-17 | Vetrotex Saint Gobain | Method for continuously coating fibers |
| CN101695873A (en) * | 2009-10-30 | 2010-04-21 | 广州科苑新型材料有限公司 | Fiber bundle fuse dipping die head for producing long fiber reinforced plastic and dipping method |
| CN203305524U (en) * | 2013-05-30 | 2013-11-27 | 李芳丽 | Yarn guide bar for untying carbon fiber bundles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106915013A (en) * | 2017-03-16 | 2017-07-04 | 湖州艾历克工业材料有限公司 | A kind of mould for producing continuous fiber reinforced thermoplastic plastic |
| CN112500185A (en) * | 2020-12-23 | 2021-03-16 | 陕西煤业化工技术研究院有限责任公司 | Continuous preparation method and production device of flexible carbon-carbon composite material |
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Application publication date: 20141217 |