CN103660324B - A kind of composite material forming flexibility is bled external member and air-exhaust method thereof - Google Patents
A kind of composite material forming flexibility is bled external member and air-exhaust method thereof Download PDFInfo
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- CN103660324B CN103660324B CN201310638235.9A CN201310638235A CN103660324B CN 103660324 B CN103660324 B CN 103660324B CN 201310638235 A CN201310638235 A CN 201310638235A CN 103660324 B CN103660324 B CN 103660324B
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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
- B29C70/342—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 using isostatic pressure
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Abstract
The invention discloses a kind of composite material forming flexibility to bleed external member and air-exhaust method thereof, a kind of composite material forming flexibility external member of bleeding at least includes VAP film, glue material is inhaled in inducing QI, backing material, exhaust tube and airtight outer wall, described VAP film is positioned at orlop, described inducing QI is inhaled glue material and is arranged on described VAP film, described backing material is arranged on described inducing QI and inhales on glue material, described airtight outer wall and VAP film use encapsulant to be tightly connected, form a confined space, the described exhaust tube described airtight outer wall of traverse, the exhaust tube mouth of pipe is positioned at above described backing material；Described inducing QI suction glue material, backing material, airtight outer wall adopt flexible material to make, can be fitted tightly on mold cavity complex surface, complete the operation of bleeding at these positions, reduce or prevent these positions from the problems such as bubble enrichment occurring, to ensure composite product quality.
Description
Technical field
The present invention relates to the external member of bleeding used in a kind of composite material forming manufacturing process, refer in particular to a kind of profile that is capable of irregular or there is the flexibility that optional position bled by the composite of curved surface in molding manufacturing process bleed external member and air-exhaust method thereof, for technical field of composite material molding, it is mainly used in profile irregular or there is the composite vacuum perfusion molding process of curved surface.
Background technology
When making large-scale composite material component (making such as wind electricity blade, yacht etc.), generally adopt vacuum perfusion process (being called for short VIP, VacuumInfusionProcess).Namely system is when certain negative pressure, and resin is injected in reinforcing material by the external world, then curing molding.The negative pressure of system is to connect external exhaust tube by pressure regulating pump to take the air in sealing system away formation.VIP technique cardinal principle is first put, at die cavity middle berth, the reinforcing material preform designed by performance and structural requirement well, by vacuum aided, special low viscosity injecting resin system is injected closed mould cavity, mould has peripheral sealing and fastening and injection and gas extraction system, with all gas ensureing that resin flowing is smooth and easy and discharge in die cavity and thorough wetting fibre, and mould has heating system can be heated solidification or utilize the self-curing heat release of resin and curing molding composite element.
But in the resin injection process that system is bled by this external exhaust tube, on the one hand due to the inhomogeneities of local flow in vacuum infusion process, when composite product local infiltrates, all the other positions are but without complete wetting, the rich resin in local is caused at wetted part, and non-wetted part resin is not enough, for ensureing that composite product quality certainly will increase resin demand, and system is bled with pressure regulating pump always, form negative pressure and get rid of the gas in cavity, prevent bubble from staying in goods, cause that product surface turns white, or cause resin packet stream, cause that resin can not complete wetting fiber cloth.On the other hand, when resin arrives external bleeding point, if the unnecessary resin that continues to bleed can block exhaust pipe.Cause pipeline blockage to prevent resin from entering pipeline, it is necessary to stop bleeding to this bleeding point, so can will left behind by the bubble in system, Local enrichment occur inside composite product, it is impossible to eliminating.These all can affect composite product quality.
We have found that through retrieval, application number is " 201010293530.1 ", name is called the patent of invention of " a kind of for large-scale composite material structure manufacture vacuum pumping method and compound bleed layer ", this patent describe " at the mould bleeding point place that vacuum perfusion process uses; there is compound bleed the extract system of layer by a kind of; in vacuum infusion process, mold cavity system is carried out all the time uninterrupted continuous air extraction; ensure that resin can complete wetting glass fabric; avoid regional area and fiber dry silk phenomenon occurs, be effectively guaranteed the apparent mass of goods；Described extract system at least includes pressure regulating pump, pump-line, bleeding point, compound bleed layer；In pressure regulating pump, vacuum suction device is connected with regulator by flexible pipe, and regulator is connected with mold cavity through bleeding point by main pump-line；During evacuation, connecting the power supply of vacuum suction device, by controlling pressure-regulating valve, and the pressure read on pressure display instrument table regulates the pressure in mold cavity；From starting die type cavity air extraction, terminating until goods solidify, vacuum suction device to be constantly in duty." exhaust pipe of this air suction mode is entirely located on the mould of composite product surrounding, continue to bleed though VAP film compound layer of bleeding can be placed at mould bleeding point, solve some composite materials goods bubble enrichment problem.But owing to bleed position is fixed, it is impossible to continue to bleed to positions such as the special laying of composite product, turnings, it is easy to cause that non-wetting or bubble enrichment occur in these regions of composite product, have a strong impact on composite product quality.Simultaneously, application number is " 201210054977.2 ", name is called that the patent of invention of " a kind of thick size carbon fiber product vacuum infusion molding method " describes one and bleeds external member, owing to air extractor is arranged below one block of Rigid Porous plate, can only realize realizing bleeding to the position that flat board or change in size are little, for curved portion or change in size be bigger etc., complex profile position cannot realize bleeding, there is non-wetting or bubble enrichment in these regions being easily caused composite product equally, have a strong impact on composite product quality.
Summary of the invention
Present invention aims to the bleed position of existing external member of bleeding fix, a kind of size of problem proposition, bleed position and the quantity such as specific position bubble enrichment cannot be solved all can be adjusted according to practical situation, can solve the problem that composite product specific position occurs that the composite material forming flexibility of the problem such as non-wetting or bubble enrichment is bled external member, ensure that composite product quality, and the repeatable utilization of exhaust pipe, reduce production cost.
This invention address that the technical scheme that above-mentioned technical problem adopts is, a kind of composite material forming flexibility is bled external member, at least include VAP film, glue material, backing material, exhaust tube and airtight outer wall are inhaled in inducing QI, described VAP film is positioned at orlop, described inducing QI is inhaled glue material and is arranged on described VAP film, described backing material is arranged on described inducing QI and inhales on glue material, described airtight outer wall and VAP film use encapsulant to be tightly connected, form a confined space, described exhaust tube is through described airtight outer wall, and the exhaust tube mouth of pipe is positioned at above described backing material；Described inducing QI suction glue material, backing material, airtight outer wall adopt flexible material to make, can be fitted tightly on mold cavity complex surface, complete the operation of bleeding at these positions, reduce or prevent these positions from the problems such as bubble enrichment occurring, to ensure composite product quality.Described VAP film has the characteristic of ventilative not seep through, can ensure that resin will not enter and bleed in external member, realize the overall perfusion molding of composite product, simultaneously, bleed in external member owing to VAP film blocks resin entrance, external member of bleeding can reuse except VAP film, reduce production cost.Glue material is inhaled in the inducing QI in external member of bleeding, backing material, airtight outer wall all adopt the material with flexibility to make, therefore external member of bleeding can be arranged on the optional position of mold cavity and be not limited, the shape size of external member of simultaneously bleeding and the quantity of setting are also all without being restricted, adaptive setting can be carried out according to the concrete condition of mould and composite product, realize the comprehensive region-wide of composite product is bled, ensure composite product quality to the full extent.
In the present invention, described airtight outer wall is macromolecule material film, adopts rubber, silica gel, nylon, PE or PVC to make.
In the present invention, described airtight outer wall is hard outer wall, adopts metal or rigid plastics to make；Described airtight outer wall is up-small and down-big taper, round table-like or opening hollow cavity with mouth tubulose, better to support exhaust tube.
In the present invention, described inducing QI suction glue material is at least made up of the material with inducing QI suction glue function one layer identical or different.
In the present invention, there is described in inducing QI and inhale the material of glue function for inhaling rubber mat or glass bulked fabric.
In the present invention, described backing material by least one of which identical or different there is macroporous material or goods form, described backing material has space can accelerate resin flowing velocity, the bubble in separable, enrichment resin, and can support inducing QI and inhale glue material.
In the present invention, described backing material can be flow-guiding screen or wire netting.
The present invention also provides for the using method of a kind of above-mentioned external member of bleeding, a kind of using method of the flexible external member of bleeding of composite material forming, at one layer of backing material of glass fabric surface lay, external member VAP film side of bleeding lies against on backing material, exhaust tube is connected with external vacuum pump, and will bleed external member and mould molding regional seal in system by vacuum bag film.In system, air enters, from fiberglass cloth, external member of bleeding, and is discharged by external member exhaust tube, it is established that vacuum systems, including following committed step:
Step one, the construction features according to composite product and mould, it is determined that need the position carrying out bleeding；
Step 2, carries out position and the construction features bled as required, prepares composite material forming flexibility and bleeds external member；
Step 3, is laid on the glass fabric surface of relevant position by one layer of backing material, then external member of bleeding is fitted tightly over backing material；
Step 4, uses vacuum bag film to be sealed in mould molding region and external member of bleeding, forms a sealing system；
Step 5, will be connected with external vacuum pump by exhaust tube external member of bleeding, and be extracted out by air, set up satisfactory vacuum systems, it is achieved the vacuum infusion molding of composite product in sealing system.
In the present invention, step 2 is prepared composite material forming flexibility external member of bleeding comprise the following steps: VAP film is positioned over orlop；Inducing QI is inhaled glue material be fitted on VAP film；Backing material fits in inducing QI inhale on glue material；Exhaust tube is positioned on backing material, finally uses fluid sealant airtight outer wall and VAP film to be sealed, the exhaust tube airtight outer wall of traverse.
External member of bleeding of the present invention can be arranged on mold cavity, the optional position of product surface and be not limited, the shape size of external member of simultaneously bleeding and the quantity of setting are also all without being restricted, adaptive setting can be carried out according to the concrete condition of mould and composite product, realize the comprehensive region-wide of composite product is bled, can solve the problem that composite product specific position occurs that the composite material forming flexibility of the problem such as non-wetting or bubble enrichment is bled external member, ensure that composite product quality, and the repeatable utilization of exhaust pipe, reduce production cost.
Accompanying drawing explanation
Fig. 1 is external member Usage profile schematic diagram of bleeding；
Fig. 2 simplifies structural representation for external member of bleeding.
In figure: 1, vacuum bag film；2, fluid sealant；3, airtight outer wall；4, exhaust tube；5, backing material；6, glue material is inhaled in inducing QI；7, VAP film；8, glass fabric；9, mould.
Detailed description of the invention
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
As shown in Figure 1, a kind of composite material forming flexibility is bled external member, at least include VAP film 7, glue material 6, backing material 5, exhaust tube 4 and airtight outer wall 3 are inhaled in inducing QI, VAP film 7 is positioned at orlop, VAP film 7 has the characteristic of ventilative not seep through, air can be passed through, it is possible to stop resin to enter into and bleed in external member；Inducing QI is inhaled glue material 6 and is arranged on VAP film 7, and inducing QI is inhaled glue material 6 and fallen by the Resin Absorbent entered due to VAP film 7 breakage, it is ensured that the seriality of operation of bleeding；Backing material 5 is arranged on inducing QI and inhales on glue material 6, and airtight outer wall 3 uses fluid sealant 2 to be tightly connected with VAP film 7, forms a confined space, and exhaust tube 4 is through airtight outer wall 3, and exhaust tube 4 mouth of pipe is positioned at above backing material 5；Inducing QI is inhaled glue material 6 and is at least made up of the suction rubber mat with inducing QI suction glue function one layer identical or different or glass bulked fabric；Backing material 5 by least one of which identical or different there is macroporous flow-guiding screen or wire netting forms, resin flowing velocity can be accelerated owing to backing material 5 has space, the bubble in separable, enrichment resin, and inducing QI can be supported inhale glue material 6；Airtight outer wall 3 adopts flexible material to make, and airtight outer wall 3 is one layer and adopts rubber, silica gel, nylon, PE or PVC to make macromolecular material thin-wall construction；Therefore the composite material forming flexibility external member of bleeding that the present invention records can be fitted tightly on mold cavity complex surface, completes the operation of bleeding at these positions, reduces or prevent these positions from the problems such as bubble enrichment occur, to ensure composite product quality.VAP film 7 has the characteristic of ventilative not seep through, can ensure that resin will not enter and bleed in external member, realize the overall perfusion molding of composite product, simultaneously, bleed in external member owing to VAP film 7 blocks resin entrance, external member of bleeding can reuse except VAP film 7, reduce production cost.Glue material 6 is inhaled in the inducing QI in external member of bleeding, backing material 5, airtight outer wall 3 all adopt flexible material to make, therefore external member of bleeding can be arranged on the optional position of mold cavity and be not limited, the shape size of external member of simultaneously bleeding and the quantity of setting are also all without being restricted, adaptive setting can be carried out according to the concrete condition of mould 9 and composite product, realize the comprehensive region-wide of composite product is bled, ensure composite product quality to the full extent.
With embodiment one, embodiment two, is different in that airtight outer wall 3 is hard outer wall, adopts metal or rigid plastics to make；Airtight outer wall 3 is up-small and down-big taper, round table-like or opening hollow cavity with mouth tubulose, better to support exhaust tube 4.
Embodiment three, it is different in that exhaust tube 4 adopts soft pipe with above-described embodiment, to avoid damage VAP film 7 in pumping process, resin cannot propagate into composite material forming flexibility and bleeds in external member, therefore, for simplifying the structure of the flexible external member of bleeding of composite material forming, inducing QI is inhaled glue material 6 remove, namely composite material forming flexibility external member of bleeding is made up of VAP film 7, backing material 5, soft exhaust tube and airtight outer wall 3, simplify structure composition, reduce production cost, improve efficiency.
Embodiment three, as shown in Figure 2, a kind of using method of the flexible external member of bleeding of composite material forming, at glass fabric 8 surface one layer of backing material 5 of lay, external member VAP film 7 side of bleeding lies against on backing material 5, exhaust tube 4 is connected with external vacuum pump, and is sealed in system by the forming area of bleed external member and mould 9 by vacuum bag film 1.In system, air is bled external member from 8 layers of entrance of glass fabric, is discharged by external member exhaust tube 4, it is established that vacuum systems, including following committed step:
Step one, the construction features according to composite product and mould 9, it is determined that need the position carrying out bleeding；
Step 2, carries out position and the construction features bled as required, prepares composite material forming flexibility and bleeds external member；
Step 3, is laid on glass fabric 8 surface of relevant position by one layer of backing material 5, then external member of bleeding is fitted tightly over backing material 5；
Step 4, uses encapsulant to be pasted onto on the flange of mould 9 vacuum bag film 1, mould 9 and external member of bleeding is sealed, forms a sealing system；
Step 5, will be connected with external vacuum pump by exhaust tube 4 external member of bleeding, and be extracted out by air, set up satisfactory vacuum systems, it is achieved the vacuum infusion molding of composite product in sealing system.
In the present invention, step 2 is prepared composite material forming flexibility external member of bleeding comprise the following steps: VAP film 7 is positioned over orlop；Inducing QI is inhaled glue material 6 be fitted on VAP film 7；Backing material 5 fits in inducing QI inhale on glue material 6；Exhaust tube 4 is positioned on backing material 5, finally uses fluid sealant 2 to be sealed with VAP film 7 by airtight outer wall 3, the exhaust tube 4 airtight outer wall 3 of traverse.
External member of bleeding of the present invention can be arranged on the optional position of mold cavity and be not limited, the shape size of external member of simultaneously bleeding and the quantity of setting are also all without being restricted, adaptive setting can be carried out according to the concrete condition of mould and composite product, realize the comprehensive region-wide of composite product is bled, can solve the problem that composite product specific position occurs that the composite material forming flexibility of the problem such as non-wetting or bubble enrichment is bled external member, ensure that composite product quality, and the repeatable utilization of exhaust pipe, reduce production cost.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. a composite material forming flexibility is bled external member, it is characterized in that: at least include vacuum bag film, VAP film, inducing QI suction glue material, backing material, exhaust tube and airtight outer wall, described VAP film is positioned at orlop, described inducing QI is inhaled glue material and is arranged on described VAP film, described backing material is arranged on described inducing QI and inhales on glue material, described airtight outer wall and VAP film use encapsulant to be tightly connected, form a confined space, described exhaust tube is through described airtight outer wall, and the exhaust tube mouth of pipe is positioned at above described backing material；Described vacuum bag film is sealedly connected on mould by VAP film, glue material, backing material, exhaust tube and airtight outer wall are inhaled in inducing QI and die sealing gets up to form a sealing system；Described inducing QI suction glue material, backing material, airtight outer wall adopt flexible material to make, it is possible to be fitted tightly on mold cavity complex surface, complete the operation of bleeding at these positions；
Described airtight outer wall is hard outer wall, adopts metal or rigid plastics to make；Described airtight outer wall is up-small and down-big taper, round table-like or opening hollow cavity with mouth tubulose, better to support exhaust tube；
Described backing material by least one of which identical or different there is macroporous material or goods form, described backing material has space can accelerate resin flowing velocity, the bubble in separable, enrichment resin, and can support inducing QI and inhale glue material.
2. composite material forming flexibility as claimed in claim 1 a kind of is bled external member, it is characterised in that: described airtight outer wall is macromolecule material film, adopts rubber, silica gel, nylon, PE or PVC to make.
3. composite material forming flexibility as claimed in claim 1 a kind of is bled external member, it is characterised in that:
Described inducing QI is inhaled glue material and is at least made up of the material with inducing QI suction glue function one layer identical or different.
4. composite material forming flexibility as claimed in claim 3 a kind of is bled external member, it is characterised in that: described in there is inducing QI inhale the material of glue function for inhaling rubber mat or glass bulked fabric.
5. composite material forming flexibility as claimed in claim 1 a kind of is bled external member, it is characterised in that: described backing material can be flow-guiding screen or wire netting.
6. the using method of the flexible external member of bleeding of composite material forming, it is characterized in that: at one layer of backing material of glass fabric surface lay, external member VAP film side of bleeding lies against on backing material, exhaust tube is connected with external vacuum pump, and external member and mould molding regional seal will be bled in system by vacuum bag film
In system, air enters, from fiberglass cloth, external member of bleeding, and is discharged by external member exhaust tube, it is established that vacuum systems, including following committed step:
Step one, the construction features according to composite product and mould, it is determined that need the position carrying out bleeding；
Step 2, carries out position and the construction features bled as required, prepares composite material forming flexibility and bleeds external member；
Step 3, is laid on the glass fabric surface of relevant position by one layer of backing material, then external member of bleeding is fitted tightly over backing material；
Step 4, uses vacuum bag film mould and external member of bleeding to be sealed, forms a sealing system；
Step 5, will be connected with external vacuum pump by exhaust tube external member of bleeding, and be extracted out by air, set up satisfactory vacuum systems, it is achieved the vacuum infusion molding of composite product in sealing system；
Wherein, step 2 is prepared composite material forming flexibility external member of bleeding comprise the following steps: VAP film is positioned over orlop；Inducing QI is inhaled glue material be fitted on VAP film；Backing material fits in inducing QI inhale on glue material；Exhaust tube is positioned on backing material, finally uses encapsulant airtight outer wall and VAP film to be sealed, the exhaust tube airtight outer wall of traverse；And described encapsulant is fluid sealant.
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| CN104029398A (en) * | 2014-06-16 | 2014-09-10 | 江苏恒神纤维材料有限公司 | Prepressing method in composite material preparation process |
| CN105082569A (en) * | 2015-08-17 | 2015-11-25 | 江苏恒神股份有限公司 | Technology for improving compression performance of composite material laminated board |
| CN106564203A (en) * | 2015-10-12 | 2017-04-19 | 上海交通大学 | Composition used for surface forming and forming method thereof |
| CN105711111A (en) * | 2016-04-01 | 2016-06-29 | 哈尔滨飞机工业集团有限责任公司 | Vacuumizing method for composite-material forming process |
| CN105946249B (en) * | 2016-06-15 | 2017-12-12 | 保定华翼风电叶片研究开发有限公司 | A kind of preparation facilities and method tested with composite board sample |
| CN107487062B (en) * | 2017-09-27 | 2019-06-18 | 华霆（合肥）动力技术有限公司 | Auxiliary sticking device |
| CN108106584A (en) * | 2017-12-11 | 2018-06-01 | 中材科技股份有限公司 | A kind of method for measuring thickness of plate braiding precast body |
| CN112659595B (en) * | 2020-12-17 | 2022-12-16 | 沈阳航天新光集团有限公司 | Device and method for removing solvent in carbon fiber polyimide composite bottle body in layered mode |
| CN114030205B (en) * | 2021-11-16 | 2023-05-12 | 航天特种材料及工艺技术研究所 | Packing box and manufacturing method thereof |
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| CN202462890U (en) * | 2012-02-27 | 2012-10-03 | 上海沥高科技有限公司 | Semi-permeable film composite for producing resin-based sectional material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202462890U (en) * | 2012-02-27 | 2012-10-03 | 上海沥高科技有限公司 | Semi-permeable film composite for producing resin-based sectional material |
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