CN107521125A - The vacuum of super thick carbon fibre composite plate imports forming method - Google Patents
The vacuum of super thick carbon fibre composite plate imports forming method Download PDFInfo
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- CN107521125A CN107521125A CN201710705082.3A CN201710705082A CN107521125A CN 107521125 A CN107521125 A CN 107521125A CN 201710705082 A CN201710705082 A CN 201710705082A CN 107521125 A CN107521125 A CN 107521125A
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- vacuum
- carbon fibre
- fibre composite
- composite plate
- steel wire
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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
- 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
- B29C70/36—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 impregnating by casting, e.g. vacuum casting
-
- 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)
- Moulding By Coating Moulds (AREA)
Abstract
The present invention relates to a kind of vacuum of super thick carbon fibre composite plate to import forming method, using two-step method, the carbon fibre composite prefabricated board prepared upper and lower surface and uniform stria and pore is distributed with first is imported using vacuum using auxiliary materials such as steel wires, then, prefabricated board is positioned over laminboard layer, is imported using vacuum and prepares the carbon fibre composite plate for needing thickness.The scheme for preparing prefabricated board is to lay layer of steel wire net in the upper and lower surface of preform, under negative pressure of vacuum, steel wire " is absorbed in " in preform, and upper and lower surface, which is made, after injecting glue, solidification the prefabricated board of stria, in stria after reasonable layout punching.The present invention not only realizes the cost degradation of super thick carbon fibre composite plate, and provides the thinking that a low-risk prepares super thick carbon fibre composite.
Description
Technical field
The present invention relates to super thick carbon fibre composite plate technique field, is that a kind of super thick carbon fiber is compound specifically
The vacuum of plate of material imports forming method.
Background technology
Carbon fibre composite is widely used in Aero-Space, track traffic, new as a kind of new high performance material
The high-tech areas such as energy automobile.At present, prepare the moulding process of carbon fibre composite plate mainly have prepreg-autoclave into
Type technique, die press technology for forming, manual pasting forming process, resin transfer molding technique, vacuum guiding and forming technique etc..With it
He compares moulding process, and vacuum guiding and forming technique is more suitable for being molded big thickness, large-sized product, is characterized in input cost
It is low, production efficiency is high, gained product porosity is low, performance is good, fiber content is high, the method be greatly lowered composite production
One of effective way of cost.
Vacuum guiding and forming technique (Vacuum Assisted Resin Infusion) abbreviation VARI moulding process, is one
Kind low cost composite large-scale product forming technique, it be under vacuum conditions (atmospheric pressure) exclude fiber in advance into
Gas in type body, by the flowing of resin, infiltration, the dipping to preform is realized, and in certain cure profile condition
Lower carry out curing molding, form the process of certain resin/fiber ratio.The process of thermoplastic resin-impregnated fibers material is by vacuum
What the active force between pressure, self gravitation and resin and fiber drove.Because carbon mono-filaments are superfine, in negative pressure of vacuum
Under, the minimum High Pressure Difference caused in aspect in gap between carbon cloth reduces, with continuing for resin impregnated carbon fiber process,
Resin flow resistance increases, so, the difficulty using vacuum importing preparation super thick carbon fibre composite product is very big, product
Scrappage is high.
Wang Mingjun etc. discloses a kind of new vacuum and imports preparation super thick composite board device and its technique, and this is special
The super thick composite board thickness prepared in profit employs two layers of permeable medium up and down and upper and lower two layers of demoulding in more than 8mm
The process of cloth realizes that shortening resin imports the time, prepares super thick composite board.The achievable super thick of this method is compound
Material thickness is limited, and increased in terms of auxiliary material cost.
Liu Kui etc. discloses a kind of thick size carbon fiber product vacuum infusion molding method, and VAP is used under vacuum slot
Film is sealed, and the suction gradient of bottling body is controlled by using VAP films, and realization prepares thick size carbon fiber product.Should
The VAP film costs that method uses are higher, and for the larger product of area, its auxiliary material cost is higher.
The carbon fiber board thickness prepared at present using vacuum guiding and forming technique is generally less than 10mm, if but using thick size
Large-sized structural component carbon fibre composite plate be difficult to realize low cost vacuum introducing technology shaping.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of vacuum of super thick carbon fibre composite plate
Import forming method.The forming method both will not bring influence to the mechanical property and reliability of product, and can realize a variety of
Thickness requirement and the preparation of the carbon fibre composite plate of low cost.
The purpose of the present invention is achieved through the following technical solutions：
A kind of vacuum of super thick carbon fibre composite plate imports forming method, and it is concretely comprised the following steps：
Using two-step method, upper and lower surface is first prepared using vacuum importing using auxiliary materials such as steel wires and is distributed with uniformly
The carbon fibre composite prefabricated board of stria and pore, then, prefabricated board is positioned over laminboard layer, shaping work is imported using vacuum
Skill prepares the carbon fibre composite plate for needing thickness.
The scheme for preparing prefabricated board is to lay layer of steel wire net in the upper and lower surface of preform, and steel wire act as
Permeable medium, and " be absorbed in " in preform under negative pressure of vacuum；After injecting glue, solidification, steel wire is shelled from prefabricated component
From getting off, the prefabricated board that upper and lower surface stria is evenly distributed then is made, in stria after rationally arrangement punching.
The preparation of prefabricated board uses vacuum guiding and forming technique, and the difference with conventional method is permeable medium being replaced by
Steel wire, and the top and bottom of preform lay steel wire；Laying one layer between steel wire and preform has hole to isolate
Film；Steel wire specification 10mm*10mm, 20mm*20mm etc., steel wire diameter are 2mm~5mm；Upper and lower two layers of steel wire is before use
Rub releasing agent.
It is by the purpose that permeable medium is replaced by steel wire：Arranged using the steel wire lines of steel wire rule, born in vacuum
Under the conditions of pressure or simultaneously under malleation and condition of negative pressure, steel wire " is absorbed in " in preform, compared to traditional plastic material water conservancy diversion
Medium, the effect that steel wire " is absorbed in " in preform become apparent from, and can adjust preformed member by selecting steel wire diameter
Stria depth.Steel wire through rubbing releasing agent can be recycled again, and traditional permeable medium is used only once, this
Sample also greatlys save the material cost of product.
Upper and lower two layers of steel wire rubs releasing agent before use, the purpose is to steel wire from prefabricated component it is more easily peelable
Get off, steel wire is repeatable to be utilized.
Described super thick carbon fibre composite plate is identical with matrix resin used in prefabricated board.Resin system
Main component please state that matrix resin includes epoxy resin, vinyl ester resin etc. and is applied to vacuum guiding and forming technique
Resin.
Described has the film that hole barrier film is surface distributed uniform micro, and its effect is by between steel wire and the cloth that strips off the skin
Resin-rich layer be easy to strip down from prefabricated component.It is 0.01mm~0.05mm to have hole barrier film pore diameter, and pitch of holes is
1mm~3mm.
A diameter of 1mm~3mm on the resin hole road issued on prefabricated board, adjacent resin hole road spacing are 20mm~50mm,
According to the process window of used resin system, the size and thickness of super thick composite panel determine resin hole road diameter and
Away from.
Compared with prior art, the positive effect of the present invention is：
A kind of vacuum guiding and forming technique for preparing super thick carbon fibre composite plate provided by the invention, is more suitable for being molded
Big thickness, large-sized carbon fibre composite product, are characterized in that input cost is low, production efficiency is high, gained product hole
Rate is low, performance is good, fiber content is high and stably；Main is that can be changed according to the thickness and size of carbon fibre composite product
Process window prepares the wind of big thickness, large-sized carbon fibre composite product to reduce using vacuum guiding and forming technique
Danger.
Brief description of the drawings
Fig. 1 is super thick composite plys schematic diagram of the present invention；
Fig. 2 is prefabricated board laying schematic diagram of the present invention；
Fig. 3 is prefabricated board schematic diagram of the present invention；
Fig. 4 is super thick composite vacuum guiding and forming technique schematic diagram of the present invention；
Mark in accompanying drawing for：1- moulds；2- strips off the skin cloth one；3- carbon fibre fabrics；4- prefabricated boards；5- strips off the skin cloth two；6-
Have on the barrier film of hole；7- flow-guiding screens；8- vacuum bags；9- sealing joint strips；Under 10- steel wires；11- has under the barrier film of hole；12- steel wires
On the net；13- injecting glue buckets；14- glue inlet tubes；15- preforms；16- Ω are managed；17- glue-feeders；18-1# helix tubes；19-1# vacuum
Pipe；20-2# helix tubes；21-2# vacuum tubes；22- resin traps.
Embodiment
A kind of vacuum of super thick carbon fibre composite plate of the present invention presented below imports the specific embodiment party of forming method
Formula.
Embodiment 1
Below in conjunction with the accompanying drawings 1, accompanying drawing 2, accompanying drawing 3, the present invention is further described for accompanying drawing 4.The present embodiment is for length
1000mm, wide 1000mm, thickness 30mm carbon fibre composite plate vacuum import shaping example.
A kind of vacuum guiding and forming technique for preparing super thick carbon fibre composite plate, its first step are to prepare prefabricated board.
As shown in figure accompanying drawing two, layer of steel wire off the net 10 is first laid in the die surface for rubbing releasing agent, then laying has hole isolation
11 under film, then the cloth 1 that strips off the skin is laid, lay 40 layers of carbon fibre fabric 3 (individual layer carbon fibre fabric thickness 0.6mm) successively, afterwards
Lay strips off the skin cloth 25, has 6 on the barrier film of hole, 12 on steel wire.Used steel wire specification is 10mm*10mm, steel wire diameter
For 3mm, and surface erasing releasing agent；Lay carbon fibre fabric, which must be rolled, overlays reality, avoids interlayer from " bridge formation " occur.
Similar, refer to the attached drawing four, glue inlet tube road and vacuum-pumping pipeline are laid out, is laid under 1# helix tubes and 2# helix tubes
Strip is breathed freely cotton；The ventilative cotton of strip is laid in the surrounding of preform 15, but middle position disconnects.
In the position adhesive seal adhesive tape 9 apart from each 30~40mm of side of preform 15, vacuum bag 8 is then pasted.Arrange
After good vacuum bag, start slowly to vacuumize, when vacuum is less than -97.5KPa, stuck 1# vacuum tubes and 2# vacuum tubes,
Vacuum change is that pressurize is qualified less than 2KPa after 5min.
After pressurize is qualified can will be deployed, resin through deaeration carries out injecting glue, the observation resin dipping feelings of preform 15
Condition, after resin thorough impregnation preform 15, stuck glue inlet tube 14, then stuck 1# vacuum tubes and 2# vacuum tubes.Solidification, molding
The auxiliary material of carbon fibre composite plate surface is cleaned out afterwards.
Through range estimation, phenomena such as surface of prefabricated board is not noted, dry spot, using lossless detection method-ultrasound examination,
The defects of prefabricated board pore-free, layering；Thickness is uniform, and quality is good.
The a diameter of 2mm in resin hole road issued on prefabricated board, adjacent resin hole road spacing are 30mm.
A kind of vacuum guiding and forming technique for preparing super thick carbon fibre composite plate, its second step are to prepare super thick carbon fibre
Tie up composite panel.As shown in figure accompanying drawing one, the one layer of cloth 1 that strips off the skin first is laid in the die surface for rubbing releasing agent, then
5 layers of carbon fibre fabric 3 are laid successively, lay prefabricated board 4 afterwards, then lay 5 layers of carbon fibre fabric 3 successively, and strip off the skin cloth 25, has
6 on the barrier film of hole, flow-guiding screen 7.Lay carbon fibre fabric, which must be rolled, overlays reality, avoids interlayer from " bridge formation " occur.
Refer to the attached drawing four, follow-up operational sequence are identical with preparing prefabricated board.
Through range estimation, phenomena such as surface of super thick carbon fibre composite plate is not noted, dry spot, using Non-Destructive Testing side
Method-ultrasound examination, super thick carbon fibre composite plate pore-free, layering the defects of；Thickness is uniform, and quality is good.
Present application addresses the high technology of the super thick carbon fibre composite plate scrappage prepared using vacuum introducing technology
Problem.The thickness of the super thick composite panel prepared in the present invention is more than 25mm.The present invention uses two-step method, first using steel wire
Etc. auxiliary material using vacuum import prepare upper and lower surface be distributed with uniform stria and pore carbon fibre composite it is prefabricated
Plate, then, prefabricated board is positioned over laminboard layer, is imported using vacuum and prepare the carbon fibre composite plate for needing thickness.System
The scheme of standby prefabricated board is to lay layer of steel wire net in the upper and lower surface of preform, and under negative pressure of vacuum, steel wire " is fallen into
Enter " in preform, after injecting glue, solidification upper and lower surface is made has the prefabricated board of stria, and reasonable layout punches in stria
Afterwards.The present invention not only realizes the cost degradation of super thick carbon fibre composite plate, and provides a low-risk system
The thinking of standby super thick carbon fibre composite.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, without departing from the inventive concept of the premise, can also make some improvements and modifications, these improvements and modifications also should be regarded as
In protection scope of the present invention.
Claims (10)
1. a kind of vacuum of super thick carbon fibre composite plate imports forming method, it is characterised in that it is concretely comprised the following steps：Using
Two-step method, first using steel wire using vacuum import prepare upper and lower surface be distributed with uniform stria and pore carbon fiber it is compound
Prefabricated plate, then, prefabricated board is positioned over laminboard layer, is imported using vacuum and prepare the carbon fiber composite for needing thickness
Flitch.
2. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 1 imports forming method, it is characterised in that
The scheme for preparing prefabricated board is to lay layer of steel wire net in the upper and lower surface of preform, and steel wire act as water conservancy diversion Jie
Matter, and " be absorbed in " in preform under negative pressure of vacuum；After injecting glue, solidification, steel wire is stripped down from prefabricated component,
Then the prefabricated board that upper and lower surface stria is evenly distributed is made, in stria after rationally arrangement punching.
3. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 2 imports forming method, it is characterised in that
The preparation of prefabricated board uses vacuum guiding and forming technique, and permeable medium is replaced by into steel wire, and the top and bottom of preform
Lay steel wire；Laying one layer between steel wire and preform has hole barrier film.
4. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 3 imports forming method, it is characterised in that
Steel wire specification 10mm*10mm, 20mm*20mm.
5. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 3 imports forming method, it is characterised in that
Steel wire diameter is 2mm~5mm.
6. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 3 imports forming method, it is characterised in that
Upper and lower two layers of steel wire rubs releasing agent before use.
7. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 3 imports forming method, it is characterised in that
Described has the film that hole barrier film is the uniform pore of surface distributed.
8. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 1 imports forming method, it is characterised in that
Upper and lower two layers of steel wire rubs releasing agent before use.
9. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 1 imports forming method, it is characterised in that
Described super thick carbon fibre composite plate is identical with resin system used in prefabricated board.
10. a kind of vacuum of super thick carbon fibre composite plate as claimed in claim 1 imports forming method, its feature exists
In a diameter of 1mm~3mm on the resin hole road issued on prefabricated board, adjacent resin hole road spacing is 20mm~50mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710705082.3A CN107521125B (en) | 2017-08-17 | 2017-08-17 | The vacuum of super thick carbon fibre composite plate imports forming method |
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| CN201710705082.3A CN107521125B (en) | 2017-08-17 | 2017-08-17 | The vacuum of super thick carbon fibre composite plate imports forming method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941876A (en) * | 2020-08-12 | 2020-11-17 | 山东英特力新材料有限公司 | Process for solving problem of dry cloth on surface of embedded part in vacuum infusion molding |
| CN112743873A (en) * | 2020-12-17 | 2021-05-04 | 东方电气（天津）风电叶片工程有限公司 | Manufacturing method of carbon pultrusion plate single lap joint tensile shear sample |
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| CN112743873A (en) * | 2020-12-17 | 2021-05-04 | 东方电气（天津）风电叶片工程有限公司 | Manufacturing method of carbon pultrusion plate single lap joint tensile shear sample |
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| CN107521125B (en) | 2019-10-25 |
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