CN107521125B - 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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- CN107521125B CN107521125B CN201710705082.3A CN201710705082A CN107521125B CN 107521125 B CN107521125 B CN 107521125B CN 201710705082 A CN201710705082 A CN 201710705082A CN 107521125 B CN107521125 B CN 107521125B
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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
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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
- B29C70/54—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 placed in laminboard layer, is imported using vacuum and prepares the carbon fibre composite plate for needing thickness.The scheme for preparing prefabricated board is the equal laying layer of steel wire net of upper and lower surface in preform, under negative pressure of vacuum, steel wire " is fallen into " in preform, the prefabricated board that upper and lower surface has stria is made after injecting glue, solidification, in stria after reasonable layout punching.The present invention not only realizes the cost effective of super thick carbon fibre composite plate, but also provides the thinking of a low-risk preparation super thick carbon fibre composite.
Description
Technical field
The present invention relates to super thick carbon fibre composite plate technique fields, are that a kind of super thick carbon fiber is compound specifically
The vacuum of plate of material imports forming method.
Background technique
Carbon fibre composite is widely used in aerospace, rail traffic, new as a kind of novel high performance material
The high-tech areas such as energy automobile.Currently, the moulding process for preparing carbon fibre composite plate mainly have prepreg-autoclave at
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 forming big thickness, large-sized product, its main feature is that input cost
Low, high production efficiency, gained product porosity are low, performance is good, fiber content is high, which is that composite material production is greatly lowered
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 material large-scale product forming technique, it be under vacuum conditions (atmospheric pressure) exclude fiber in advance at
Gas in type body realizes the dipping to preform, and in certain cure profile condition by the flowing of resin, infiltration
Lower carry out curing molding, forms the process of certain resin/fiber ratio.The process of thermoplastic resin-impregnated fibers material is by vacuum
Effect power drive between pressure, self gravity and resin and fiber.Since carbon mono-filaments are superfine, in negative pressure of vacuum
Under, the minimum High Pressure Difference caused in level in gap between carbon cloth reduces, with continuing for resin impregnated carbon fiber process,
Resin flow resistance increases, so, the difficulty for importing preparation super thick carbon fibre composite product using vacuum is very big, product
Scrappage is high.
Wang Mingjun etc. discloses the novel vacuum of one kind and imports preparation super thick composite board device and its technique, this is specially
The super thick composite board thickness prepared in benefit uses upper layer and lower layer permeable medium and upper layer and lower layer demoulds in 8mm or more
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 by using the suction gradient of VAP film control bottling body, is realized and is prepared thick size carbon fiber product.It should
The VAP film higher cost that method uses, its auxiliary material higher cost of product biggish for area.
10mm is generally less than using the carbon fiber board thickness of vacuum guiding and forming technique preparation at present, if but using thick size
Large-sized structural component carbon fibre composite plate be difficult to realize low cost vacuum introducing technology molding.
Summary 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 mechanical property to product and reliability affect, 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 importing forming method of super thick carbon fibre composite plate, the specific steps are that:
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
Then prefabricated board is placed in laminboard layer by the carbon fibre composite prefabricated board of stria and pore, import molding work using vacuum
Skill prepares the carbon fibre composite plate for needing thickness.
The scheme for preparing prefabricated board is the equal laying layer of steel wire net of upper and lower surface in preform, and steel wire acts as
Permeable medium, and " fallen into " 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 for permeable medium to be changed to
Steel wire, and the equal laying steel wire in top and bottom of preform；There is hole to be isolated for one layer of laying between steel wire and preform
Film；Steel wire specification 10mm*10mm, 20mm*20mm etc., steel wire diameter are 2mm~5mm；Upper layer and lower layer steel wire is before use
Rub release agent.
It is by the purpose that permeable medium is changed to steel wire: is arranged using the steel wire lines of steel wire rule, it is negative in vacuum
Under the conditions of pressure or simultaneously under positive pressure and condition of negative pressure, steel wire " is fallen into " in preform, compared to traditional plastic material water conservancy diversion
Medium, the preforming intracorporal effect of steel wire " falling into " become apparent from, and can adjust preformed member by selecting steel wire diameter
Stria depth.Steel wire through rubbing release agent can recycle again, and traditional permeable medium is used only once, this
The material cost of product is also greatly saved in sample.
Upper layer and lower layer steel wire is rubbing release agent using preceding, and it is more easily peelable from prefabricated component that the purpose is to steel wires
Get off, steel wire is reusable.
The super thick carbon fibre composite plate is identical with matrix resin used in prefabricated board.Matrix resin packet
Include the resin that epoxy resin, vinyl ester resin etc. are suitable for vacuum guiding and forming technique.
Described to have hole isolation film be that surface is evenly distributed the film of micropore, and effect is will be between steel wire and the cloth that strips off the skin
Resin-rich layer be easy to strip down from prefabricated component.Having hole isolation film pore diameter is 0.01mm~0.05mm, and pitch of holes is
1mm~3mm.
The diameter on the resin hole road issued on prefabricated board is 1mm~3mm, and adjacent resin hole road spacing is 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 preparing super thick carbon fibre composite plate provided by the invention, is more suitable for forming
Big thickness, large-sized carbon fibre composite product, its main feature is that input cost is low, high production efficiency, gained product hole
Rate is low, performance is good, fiber content is high and stablizes；Main is that can be replaced 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.
Detailed description of the invention
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 material vacuum guiding and forming technique schematic diagram of the present invention；
The label in accompanying drawing is: 1- mold；2- strips off the skin cloth one；3- carbon fibre fabric；4- prefabricated board；5- strips off the skin cloth two；6-
Have on the isolation film of hole；7- flow-guiding screen；8- vacuum bag；9- sealing joint strip；Under 10- steel wire；11- has under the isolation film of hole；12- steel wire
On the net；13- injecting glue bucket；14- glue inlet tube；15- preform；16- Ω pipe；17- glue-feeder；18-1# helix tube；19-1# vacuum
Pipe；20-2# helix tube；21-2# vacuum tube；22- resin trap.
Specific 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
With reference to the accompanying drawing 1, attached drawing 2, attached drawing 3, the present invention is further described for attached drawing 4.The present embodiment is for length
The carbon fibre composite plate vacuum of 1000mm, wide 1000mm, thickness 30mm import molding example.
A kind of vacuum guiding and forming technique preparing super thick carbon fibre composite plate, the first step are to prepare prefabricated board.
As shown in figure attached drawing two, in the die surface elder generation laying layer of steel wire off the net 10 for rubbing release agent, then laying has hole isolation
11 under film, then laying strips off the skin cloth 1, successively 40 layers of carbon fibre fabric 3 of laying (single layer carbon fibre fabric thickness 0.6mm), later
Laying strips off the skin cloth 25, has 6 on the isolation film of hole, 12 on steel wire.Used steel wire specification is 10mm*10mm, steel wire diameter
For 3mm, and surface rubs release agent；Laying carbon fibre fabric must be rolled and overlay reality, and interlayer is avoided " bridge formation " occur.
Similar, with reference to attached drawing four, it is laid out glue inlet tube road and vacuum-pumping pipeline, the laying under 1# helix tube and 2# helix tube
Strip is breathed freely cotton；In the ventilative cotton of the surrounding laying strip 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.It arranges
After good vacuum bag, start slowly to vacuumize, when vacuum degree is less than -97.5KPa, stuck 1# vacuum tube and 2# vacuum tube,
It is pressure maintaining qualification that vacuum degree variation, which is less than 2KPa, after 5min.
After pressure maintaining is qualified can will be deployed, the resin through deaeration carries out injecting glue, and observation resin impregnates 15 feelings of preform
Condition, after resin thorough impregnation preform 15, stuck glue inlet tube 14, then stuck 1# vacuum tube and 2# vacuum tube.Solidification, molding
The auxiliary material of carbon fibre composite plate surface is cleaned out afterwards.
Visually, the surface of prefabricated board do not infuse, dry spot phenomena such as, using lossless detection method-ultrasound examination,
The defects of prefabricated board pore-free, layering；Thickness is uniform, and quality is good.
The resin hole road diameter issued on prefabricated board is 2mm, and adjacent resin hole road spacing is 30mm.
A kind of vacuum guiding and forming technique preparing super thick carbon fibre composite plate, second step are to prepare super thick carbon fiber
Tie up composite panel.As shown in figure attached drawing one, strip off the skin cloth 1 in one layer of die surface elder generation laying for rubbing release agent, then
Successively 5 layers of carbon fibre fabric 3 of laying, laying prefabricated board 4, then successively 5 layers of carbon fibre fabric 3 of laying later, strip off the skin cloth 25, has
6 on the isolation film of hole, flow-guiding screen 7.Laying carbon fibre fabric must be rolled and overlay reality, and interlayer is avoided " bridge formation " occur.
With reference to attached drawing four, subsequent operational sequence is identical as prefabricated board is prepared.
Visually, the surface of super thick carbon fibre composite plate do not infuse, dry spot phenomena such as, using non-destructive testing side
The defects of method-ultrasound examination, super thick carbon fibre composite plate pore-free, layering；Thickness is uniform, and quality is good.
Present application addresses the high technologies of the super thick carbon fibre composite plate scrappage using the preparation of 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 uses steel wire
Etc. auxiliary materials prepare that uniform stria is distributed in upper and lower surface and the carbon fibre composite of pore is prefabricated using vacuum importing
Then prefabricated board is placed in laminboard layer by plate, imported using vacuum and prepare the carbon fibre composite plate for needing thickness.System
The scheme of standby prefabricated board is the equal laying layer of steel wire net of upper and lower surface in preform, and under negative pressure of vacuum, steel wire " is fallen into
Enter " in preform, the prefabricated board that upper and lower surface has stria is made after injecting glue, solidification, reasonable layout punches in stria
Afterwards.The present invention not only realizes the cost effective of super thick carbon fibre composite plate, but also provides a low-risk system
The thinking of standby super thick carbon fibre composite.
The above is only a 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 several improvements and modifications, these improvements and modifications also should be regarded as
In protection scope of the present invention.
Claims (4)
1. a kind of vacuum of super thick carbon fibre composite plate imports forming method, which is characterized in that the specific steps are that: it uses
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
Then prefabricated board is placed in laminboard layer by prefabricated plate, imported using vacuum and prepare the carbon fiber composite for needing thickness
Flitch；
The scheme for preparing prefabricated board is the equal laying layer of steel wire net of upper and lower surface in preform, and steel wire acts as water conservancy diversion
Medium, and " fallen into " in preform under negative pressure of vacuum；After injecting glue, solidification, under steel wire is removed from prefabricated board
Come, the prefabricated board that upper and lower surface stria is evenly distributed then is made, in stria after rationally arrangement punching.
2. a kind of vacuum of super thick carbon fibre composite plate as described in claim 1 imports forming method, which is characterized in that
Upper layer and lower layer steel wire is rubbing release agent using preceding.
3. a kind of vacuum of super thick carbon fibre composite plate as described in claim 1 imports forming method, which is characterized in that
The super thick carbon fibre composite plate is identical with resin system used in prefabricated board.
4. a kind of vacuum of super thick carbon fibre composite plate as described in claim 1 imports forming method, which is characterized in that
The diameter on the resin hole road issued on prefabricated board is 1mm ~ 3mm, and adjacent resin hole road spacing is 20mm ~ 50mm.
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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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| CN107521125B true CN107521125B (en) | 2019-10-25 |
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| 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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| KR100405033B1 (en) * | 2000-07-11 | 2003-11-07 | 이성우 | Rehabilitation of Concrete Structures with Composites by Vacuum Bag Method |
| WO2003101708A1 (en) * | 2002-05-29 | 2003-12-11 | The Boeing Company | Controlled atmospheric pressure resin infusion process |
| CN105034408B (en) * | 2015-07-14 | 2017-06-13 | 江苏九鼎新材料股份有限公司 | A kind of method that use pressurizing resin capsule legal system makees fibre reinforced composites product |
| CN105563855A (en) * | 2016-01-27 | 2016-05-11 | 江苏恒神股份有限公司 | Novel device and technology for manufacturing ultra-thick composite plate by means of vacuum infusion |
| CN205651673U (en) * | 2016-01-27 | 2016-10-19 | 江苏恒神股份有限公司 | Novel super thick combined material panel of leading -in preparation in vacuum device |
| CN206154744U (en) * | 2016-09-30 | 2017-05-10 | 咸宁海威复合材料制品有限公司 | Supplementary two membrane forming device in vacuum |
| CN106239935A (en) * | 2016-09-30 | 2016-12-21 | 咸宁海威复合材料制品有限公司 | The double membrane forming device of vacuum aided |
| CN106945308A (en) * | 2017-04-21 | 2017-07-14 | 陕西飞机工业（集团）有限公司 | A kind of vacuum aided infiltration molding process method of insert-molded article |
| CN207711416U (en) * | 2018-01-16 | 2018-08-10 | 东北林业大学 | A kind of process equipment for plant fiber vacuum compression molding |
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Address after: 312000 Building 2, Haitu jiuyiqiu, Binhai Industrial Zone, Keqiao District, Shaoxing City, Zhejiang Province Patentee after: Shaoxing Baojing composite material Co.,Ltd. Address before: 312030 Building 2, jiuyiqiu, Haitu, Binhai Industrial Zone, Shaoxing City, Zhejiang Province Patentee before: JINGGONG (SHAOXING) COMPOSITE MATERIAL CO.,LTD. |
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