CN113002011A - Method and device for preparing advanced composite material L-shaped beam member by autoclave - Google Patents
Method and device for preparing advanced composite material L-shaped beam member by autoclave Download PDFInfo
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- CN113002011A CN113002011A CN202110179105.8A CN202110179105A CN113002011A CN 113002011 A CN113002011 A CN 113002011A CN 202110179105 A CN202110179105 A CN 202110179105A CN 113002011 A CN113002011 A CN 113002011A
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- 239000011157 advanced composite material Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000007731 hot pressing Methods 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000004744 fabric Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 6
- 239000002131 composite material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B29C70/34—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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/001—Profiled members, e.g. beams, sections
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a method and a device for preparing an advanced composite material L-shaped beam component by an autoclave. The invention provides in a first aspect a method of making an advanced composite L-beam structure by autoclave, comprising the steps of: paving an advanced composite material on the surface of a mould to form an L shape; covering the surface of the mold, which is paved with the advanced composite material, by using a vacuum bag, and pumping air between the mold and the vacuum bag; and (3) carrying out forming and curing treatment on the advanced composite material in a hot-pressing tank to obtain the advanced composite material L-shaped beam component. According to the invention, a full wrapping mode is replaced by a mode of covering the vacuum bag on one side of the mould, so that edges and corners in the mould are avoided, the problem that the vacuum bag is cut by the edges and corners of the mould is avoided, the phenomenon of bridging is avoided, the fit degree of the vacuum bag and the mould is ensured, and the preparation of the advanced composite material L-shaped beam component is ensured.
Description
Technical Field
The invention relates to a method and a device for preparing an advanced composite material L-shaped beam component by a autoclave, relating to the technical field of material processing.
Background
The composite material is a new material formed by optimally combining material components with different properties, wherein the advanced composite material obtained by taking resin as a matrix and continuous fibers as a reinforcement has the characteristics of light weight, high strength, designability and the like, and is widely applied to the high-tech fields of aviation, aerospace and the like.
The advanced composite material L-shaped beam component is a typical component of an advanced composite material, and is mainly obtained by forming an L shape of the advanced composite material through an L-shaped die, then forming and curing, specifically, paving the advanced composite material on the surface of the die to form the L shape, and then forming and curing at a certain temperature and pressure to obtain the advanced composite material L-shaped beam component.
The autoclave is a common device for advanced composite material molding and curing, can provide a high-temperature and high-pressure environment, and has the advantages of uniform heating temperature, uniform molding pressure distribution, small limitation on the size and the shape of a part to be processed and the like. The autoclave mainly increases the temperature in the autoclave body through a heating pipe, and increases the pressure in the autoclave body through introducing compressed air or inert gas into the closed autoclave body.
In the forming and curing process of the advanced composite material, the vacuum bag is required to be wrapped by the advanced composite material and the mold, and the vacuum bag is always kept to be attached to the mold in the forming and curing process, but based on the shape of the mold, the vacuum bag is not only easily cut by edges and corners of the mold, but also the problem of bridging easily occurs at the edges and corners, the attaching degree of the vacuum bag and the mold cannot be ensured, and the forming and curing failure of the advanced composite material is caused.
Disclosure of Invention
The invention provides a method for preparing an advanced composite material L-shaped beam component through a hot pressing tank, which is used for solving the problems that a vacuum bag is easily cut by edges and corners of a mould and the edges and corners are easy to bridge, and ensuring the preparation of the advanced composite material L-shaped beam component.
The invention also provides a device for implementing the method, which ensures the preparation of the advanced composite material L-shaped beam member.
The invention provides in a first aspect a method of making an advanced composite L-beam structure by autoclave, comprising the steps of:
paving an advanced composite material on the surface of a mould to form an L shape;
covering the surface paved with the advanced composite material in the mold by using a vacuum bag, and pumping air between the mold and the vacuum bag;
and carrying out forming and curing treatment on the advanced composite material in a hot-pressing tank to obtain the advanced composite material L-shaped beam component.
Further, after an isolating film and a piece of membrane removing cloth are paved on the surface of the mold, the advanced composite material is paved, and then the membrane removing cloth and the breathable felt are paved on the surface of the advanced composite material.
Further, the mold is provided with a through hole, and the vacuum bag covers the through hole.
Further, air between the mold and the vacuum bag is evacuated by a vacuum pump.
Further, in the process of forming and curing the advanced composite material, the vacuum bag is always kept in a vacuum state.
The invention provides a device for implementing any one of the methods, which comprises an autoclave and a mould, wherein the mould is used for paving the advanced composite material to enable the advanced composite material to form an L shape, and the autoclave is used for carrying out molding and curing treatment on the advanced composite material;
the hot pressing tank is internally provided with a movable flat plate, the movable flat plate is connected with a vacuum bag, and the vacuum bag can cover the surface of the mold with the advanced composite material paved therein.
Further, the mold is coupled to the moving plate.
Further, the mould is provided with a through hole, a connecting piece is arranged in the through hole, and the connecting piece is used for being connected with a vacuum pump.
Further, the diameter of the through hole is 18 mm.
Further, the thickness of the connecting piece is 6 mm.
The implementation of the invention has at least the following advantages:
1. according to the invention, a full wrapping mode is replaced by a mode of covering the vacuum bag on one side of the mould, so that edges and corners in the mould are avoided, the problem that the vacuum bag is cut by the edges and corners of the mould is avoided, the phenomenon of bridging is avoided, the fit degree of the vacuum bag and the mould is ensured, and the preparation of an advanced composite material L-shaped beam component is ensured; in addition, the space occupied by the vacuum bag in the autoclave is reduced, and the service efficiency of the autoclave is improved.
2. The invention provides a device for preparing an advanced composite material L-shaped beam component, which reduces the area of a vacuum bag arranged on a moving plane and reduces the space occupied by the vacuum bag in an autoclave.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic perspective view of a mold according to the prior art;
FIG. 2 is a schematic diagram of a prior art mold and vacuum bag configuration;
FIG. 3 is a schematic structural view of a mold and a vacuum bag according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the operation of the mold in one embodiment of the present invention;
FIG. 5a is a side view of a mold in accordance with an embodiment of the present invention;
FIG. 5b is a top view of the mold in one embodiment of the present invention;
FIG. 6 is a front view of a connector in accordance with an embodiment of the present invention.
Description of reference numerals:
1-a mould;
2-a connector;
3-moving the flat plate;
4-advanced composite materials;
5-vacuum bag;
6-isolating membrane and stripping cloth;
7-stripping cloth and air-permeable felt.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The composite material is a new material formed by optimally combining material components with different properties, for example, common composite materials include carbon fiber reinforced advanced composite materials, glass fiber reinforced advanced composite materials (commonly referred to as glass fiber reinforced plastics) and the like. The advanced composite material in the application takes resin as a matrix and continuous fibers as a reinforcement, has the characteristics of light weight, high strength, designability and the like, and is widely applied to the high-tech fields of aviation, aerospace and the like.
The advanced composite material L-shaped beam component is a typical advanced composite material component, and is mainly characterized in that the advanced composite material is paved and attached on the surface of a mould to form an L shape, and then the L-shaped beam component is formed and cured in a hot-pressing tank at a certain temperature and pressure to obtain the advanced composite material L-shaped beam component.
The autoclave is a common device for advanced composite material molding and curing, can provide a high-temperature and high-pressure environment, and has the advantages of uniform heating temperature, uniform molding pressure distribution, small limitation on the size and the shape of a part to be processed and the like. The autoclave mainly increases the temperature in the autoclave body through a heating pipe, and increases the pressure in the autoclave body through introducing compressed air or inert gas into the closed autoclave body.
On the premise of reasonable structure of the die, the temperature and the pressure of each point of the advanced composite material paved on the surface of the die can be ensured to be the same, so that the advanced composite material is molded and cured at uniform temperature and pressure.
In the process of forming and curing the advanced composite material, the vacuum bag is required to wrap the advanced composite material and the mold, and the vacuum bag is always kept to be attached to the mold in the forming and curing process, fig. 1 is a schematic three-dimensional structure diagram of the mold in the prior art, as shown in fig. 1, the mold is in an L shape, the mold is provided with two planes which are perpendicular to each other, a through hole is arranged on one surface, a connecting part 2 is arranged in the through hole, the connecting part 2 is connected with a vacuum pump in a hot-pressing tank, in the process of preparing the L-shaped beam member of the advanced composite material, the advanced composite material can be paved on the surface of the mold, then the mold is wrapped by the vacuum bag, the vacuum pump is opened to pump air between the vacuum bag and the mold, so that the vacuum bag is attached to the mold, and in the subsequent preparation process of the composite material, the vacuum state, as shown in fig. 2, a movable plate 3 is arranged in the autoclave, the mold 1 is horizontally placed on the surface of the movable plate 3, the advanced composite material 4 is paved on the surface of the mold 1, the mold 1 and the composite material 4 are completely wrapped by using a vacuum bag 5, a vacuum pump is started, air between the vacuum bag 5 and the mold 1 is pumped out through a connecting piece 2, and the vacuum state in the vacuum bag is always kept in the subsequent molding and curing process.
As can be seen from fig. 2, based on the shape of the mold, in the processes of vacuum pumping and subsequent molding and curing, the vacuum bag is not only easily cut by the corners of the mold, but also "bridging" is easily generated at the corners, which cannot ensure the degree of fit between the vacuum bag and the mold, resulting in failure of molding and curing of the advanced composite material.
For the above reasons, under the funding of the national emphasis research and development program (project number: 2017YFB0703300), the invention provides in a first aspect a method for preparing an advanced composite material L-shaped beam member by a hot-pressing tank, which comprises the following steps:
paving an advanced composite material on the surface of the mold to form an L shape;
covering the surface paved with the advanced composite material in the mold by using a vacuum bag, and pumping air between the mold and the vacuum bag;
and carrying out forming and curing treatment on the advanced composite material in a hot-pressing tank to obtain the advanced composite material L-shaped beam component.
The invention provides a method for preparing an advanced composite material L-shaped beam component through an autoclave, and as can be seen by continuously referring to fig. 2, the L-shaped surface in the mold is used for paving the advanced composite material, and the other surface is not required to be paved with the advanced composite material, so that the vacuum bag covered on the surface has no practical significance, and the invention replaces the existing vacuum bag completely wrapping the mold with the vacuum bag only covering the surface of the mold paved with the advanced composite material, thereby effectively solving the problems that the vacuum bag is easy to be cut and the edges and corners are bridged, and ensuring the preparation of the advanced composite material L-shaped beam component. Fig. 3 is a schematic structural view of a mold and a vacuum bag according to an embodiment of the present invention, as shown in fig. 3, when the advanced composite material 4 is laid on the surface of the mold 1 to form an L shape, the vacuum bag 5 only covers the surface of the mold on which the advanced composite material is laid, and does not need to cover the surface of the mold on which the advanced composite material is not laid, and this covering manner can avoid covering the position of the edge angle in the mold as much as possible, thereby avoiding the problem that the vacuum bag is broken by the edge angle of the mold and the problem of "bridging" at the edge angle of the mold, and ensuring the forming and curing process of the advanced composite material. According to the invention, a full wrapping mode is replaced by a mode of covering the vacuum bag on one side of the mould, so that edges and corners in the mould are avoided, the problem that the vacuum bag is cut by the edges and corners of the mould is avoided, the phenomenon of bridging is avoided, the fit degree of the vacuum bag and the mould is ensured, and the preparation of an advanced composite material L-shaped beam component is ensured; in addition, the vacuum bag covering mode used by the invention reduces the area of the vacuum bag, reduces the space occupied by the vacuum bag in the autoclave and improves the service efficiency of the autoclave.
In a specific embodiment, the method specifically comprises the steps of:
step 1: paving an advanced composite material on the surface of a mould to form an L shape;
firstly, according to the size requirement of an advanced composite material L-shaped beam component, the advanced composite material is paved on the surface of a mould, the mould is used for providing an L shape for the advanced composite material L-shaped beam component, and in order to facilitate the preparation of the advanced composite material L-shaped beam component, before paving the advanced composite material, an isolating film and a stripping cloth are paved on the surface of the mould, then the advanced composite material is paved, and finally the stripping cloth and an air felt are paved on the surface of the advanced composite material.
Fig. 4 is a schematic working diagram of a mold according to an embodiment of the present invention, and as shown in fig. 4, in a process of manufacturing an L-shaped beam member of an advanced composite material, an isolation film and a release fabric 6 are first laid on a surface of the mold 1, then the advanced composite material 4 is laid on a surface of the release fabric according to a size requirement of the L-shaped beam member, and finally the release fabric and an airfelt 7 are laid on a surface of the advanced composite material 4, wherein the isolation film, the release fabric and the airfelt are thin, which is beneficial to manufacturing the L-shaped beam member of the advanced composite material.
Step 2: covering the surface paved with the advanced composite material in the mold by using a vacuum bag, and pumping air between the mold and the vacuum bag;
the mould with the applied advanced composite material is covered with a vacuum bag in the manner shown in fig. 4, and then air between the vacuum bag and the mould is evacuated to make the vacuum bag tightly fit to the surface of the mould.
Specifically, the mould is provided with a through hole, a connecting piece is arranged in the through hole, the connecting piece is of a hollow tubular structure, the connecting piece can be connected with a vacuum pump in an autoclave, and air between the mould and a vacuum bag is pumped out through the vacuum pump, so that in the actual preparation process, the vacuum bag is required to cover the through hole, and in the covering process, the position of a corner angle in the mould is required to be prevented from being covered as much as possible.
And step 3: and carrying out forming and curing treatment on the advanced composite material in a hot-pressing tank to obtain the advanced composite material L-shaped beam component.
Finally, the autoclave is sealed, the temperature and the pressure in the autoclave are improved, and the advanced composite material is molded and cured, so that a person skilled in the art can operate the autoclave and set the temperature and the pressure in the autoclave according to the conventional technical means, the required temperature and the required pressure are different according to the different advanced composite materials to be processed, generally, the molding and curing temperature required by the advanced composite materials is 90-180 ℃, and the pressure is 0.1-0.6MPa, and in addition, the vacuum bag is required to be kept in a vacuum state all the time in the molding and curing process.
And (3) after the advanced composite material is subjected to forming and curing treatment, demoulding to obtain the advanced composite material L-shaped beam member.
In conclusion, the invention replaces the full wrapping mode with the mode of covering the vacuum bag on one side of the mould, avoids the edges and corners in the mould, not only avoids the problem that the vacuum bag is cut by the edges and corners of the mould, but also avoids the phenomenon of bridging, ensures the fit degree of the vacuum bag and the mould, and ensures the preparation of the advanced composite material L-shaped beam component; in addition, the space occupied by the vacuum bag in the autoclave is reduced, and the service efficiency of the autoclave is improved.
The invention provides a device for implementing any one of the methods, which comprises an autoclave and a mould, wherein the mould is used for paving the advanced composite material to enable the advanced composite material to form an L shape, and the autoclave is used for carrying out molding and curing treatment on the advanced composite material;
the hot pressing tank is internally provided with a movable flat plate, the movable flat plate is connected with a vacuum bag, and the vacuum bag can cover the surface of the mold with the advanced composite material paved therein.
The invention provides a device for preparing an advanced composite material L-shaped beam component, which comprises an autoclave and a die, wherein the die can use the die shown in figure 1; the autoclave is a tank body capable of providing high temperature and high pressure, and the technical personnel in the field know that a movable flat plate is arranged in the autoclave, and a vacuum bag can be fixedly arranged on the movable flat plate.
In addition, the mould can also be connected with the movable flat plate, namely the mould, the vacuum bag and the movable flat plate are integrally arranged, the movable flat plate can be drawn out in the process of preparing the advanced composite material L-shaped component, and the advanced composite material is paved on the surface of the mould.
With continued reference to fig. 4, the mold 1 is horizontally placed on the movable plate 3 in the autoclave, one end of the vacuum bag 5 and the mold 1 are fixedly connected to the movable plate 3, when the advanced composite material L-shaped beam member is prepared, the movable plate is pulled out, the materials are laid on the surface of the mold, the vacuum bag is covered on the surface, then the air between the vacuum bag and the mold is pumped out, and the vacuum state is maintained for the subsequent forming and curing treatment of the advanced composite material.
The vacuum state is required to be kept after the vacuum bag is covered, air between the vacuum bag and the mold can be pumped out through the vacuum pump, specifically, the mold is provided with a through hole, a connecting piece is arranged in the through hole, and the connecting piece is used for being connected with the vacuum pump.
With continued reference to figure 4, the mould 1 is provided with a through hole in which a connector 2 is provided, which is connected through the moving plate 3 to a vacuum pump in the autoclave, it being noted that the vacuum bag must cover the through hole, and the vacuum pump is then turned on to evacuate the air from the vacuum bag.
Further, the invention also provides a die suitable for preparing the advanced composite material L-shaped beam component, wherein the die is L-shaped and is provided with a through hole on one plane.
Fig. 5a is a side view of a mold according to an embodiment of the present invention, fig. 5b is a top view of a mold according to an embodiment of the present invention, as shown in fig. 5a-5b, the mold is L-shaped having two planes perpendicular to each other, wherein a through hole is provided in one plane, and a connecting member is provided in the through hole for connection with a vacuum pump, fig. 6 is a front view of the connecting member according to an embodiment of the present invention, and the connecting member has a hollow tubular structure.
In order to enable the die to adapt to the high-temperature and high-pressure environment in the autoclave, the diameter of the through hole and the thickness of the connecting piece are further limited, and further the diameter of the through hole is 18 mm; the thickness of the connecting piece is 6 mm.
In conclusion, the invention provides a device for preparing the advanced composite material L-shaped beam component, which reduces the area of the vacuum bag arranged on the moving plane and reduces the space occupied by the vacuum bag in the autoclave.
In conclusion, the invention replaces the full wrapping mode with the mode of covering the vacuum bag on one side of the mould, avoids the edges and corners in the mould, not only avoids the problem that the vacuum bag is cut by the edges and corners of the mould, but also avoids the phenomenon of bridging, ensures the fit degree of the vacuum bag and the mould, and ensures the preparation of the advanced composite material L-shaped beam component; in addition, the space occupied by the vacuum bag in the autoclave is reduced, and the service efficiency of the autoclave is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of making an advanced composite L-beam element by autoclave, comprising the steps of:
paving an advanced composite material on the surface of a mould to form an L shape;
covering the surface paved with the advanced composite material in the mold by using a vacuum bag, and pumping air between the mold and the vacuum bag;
and carrying out forming and curing treatment on the advanced composite material in a hot-pressing tank to obtain the advanced composite material L-shaped beam component.
2. The method of claim 1, wherein the advanced composite is applied after the release film and release cloth are applied to the surface of the mold, and then the release cloth and airfelt are applied to the surface of the advanced composite.
3. The method of claim 1, wherein the mold is provided with a through hole and the vacuum bag covers the through hole.
4. A method according to claim 3, wherein air between the mould and vacuum bag is evacuated by a vacuum pump.
5. The method of claim 4, wherein the vacuum is maintained in the vacuum bag during the curing of the advanced composite material.
6. An apparatus for implementing the method of any one of claims 1-5, comprising an autoclave and a mold, wherein the mold is used for laying the advanced composite material to form the advanced composite material into an L shape, and the autoclave is used for molding and curing the advanced composite material;
the hot pressing tank is internally provided with a movable flat plate, the movable flat plate is connected with a vacuum bag, and the vacuum bag can cover the surface of the mold with the advanced composite material paved therein.
7. The apparatus of claim 6, wherein the mold is coupled to the moving platen.
8. The apparatus of claim 7, wherein the mold is provided with a through hole, and a connector is provided in the through hole, the connector being adapted to connect to a vacuum pump.
9. The apparatus of claim 8, wherein the through-hole has a diameter of 18 mm.
10. The device of claim 8, wherein the thickness of the connector is 6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110179105.8A CN113002011A (en) | 2021-02-08 | 2021-02-08 | Method and device for preparing advanced composite material L-shaped beam member by autoclave |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110179105.8A CN113002011A (en) | 2021-02-08 | 2021-02-08 | Method and device for preparing advanced composite material L-shaped beam member by autoclave |
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| CN113002011A true CN113002011A (en) | 2021-06-22 |
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| CN102350803A (en) * | 2011-06-24 | 2012-02-15 | 中国航空工业集团公司北京航空制造工程研究所 | Encapsulation method for reducing vacuum leakage in composite material formation |
| US20140216642A1 (en) * | 2013-02-07 | 2014-08-07 | The Boeing Company | Laminate Compaction Using Magnetic Force |
| CN104302466A (en) * | 2012-04-16 | 2015-01-21 | 维斯塔斯风力系统有限公司 | A method of fabricating a composite part and an apparatus for fabricating a composite part |
| CN109016563A (en) * | 2018-07-25 | 2018-12-18 | 西南交通大学 | A kind of device and method for eliminating residual stress of composites control curing deformation |
| CN109367061A (en) * | 2018-12-11 | 2019-02-22 | 中南大学 | A kind of composite formed manufacturing device |
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2021
- 2021-02-08 CN CN202110179105.8A patent/CN113002011A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350803A (en) * | 2011-06-24 | 2012-02-15 | 中国航空工业集团公司北京航空制造工程研究所 | Encapsulation method for reducing vacuum leakage in composite material formation |
| CN104302466A (en) * | 2012-04-16 | 2015-01-21 | 维斯塔斯风力系统有限公司 | A method of fabricating a composite part and an apparatus for fabricating a composite part |
| US20140216642A1 (en) * | 2013-02-07 | 2014-08-07 | The Boeing Company | Laminate Compaction Using Magnetic Force |
| CN109016563A (en) * | 2018-07-25 | 2018-12-18 | 西南交通大学 | A kind of device and method for eliminating residual stress of composites control curing deformation |
| CN109367061A (en) * | 2018-12-11 | 2019-02-22 | 中南大学 | A kind of composite formed manufacturing device |
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Application publication date: 20210622 |