EP3475047A1 - Verfahren zur herstellung eines verbundbauteils und ein verbundbauteil - Google Patents
Verfahren zur herstellung eines verbundbauteils und ein verbundbauteilInfo
- Publication number
- EP3475047A1 EP3475047A1 EP17729471.7A EP17729471A EP3475047A1 EP 3475047 A1 EP3475047 A1 EP 3475047A1 EP 17729471 A EP17729471 A EP 17729471A EP 3475047 A1 EP3475047 A1 EP 3475047A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- polymeric matrix
- joining partner
- reinforcing fibers
- joining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
- B29C70/745—Filling cavities in the preformed part
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0078—Measures or configurations for obtaining anchoring effects in the contact areas between layers
- B29C37/0082—Mechanical anchoring
- B29C37/0085—Mechanical anchoring by means of openings in the layers
-
- 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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
Definitions
- the invention relates to a method for producing a composite component and a composite component, in which at least one first joining partner made of a metallic or ceramic material with a second joining partner of a fiber composite material formed with reinforcing fibers and a polymeric matrix (fiber-plastic composite: FKV) connected are.
- a composite component may in this case have a plurality of joining partners made of metal and / or ceramic, which are connected to one or more joining partners, which is / are formed from fiber composite material formed with reinforcing fibers and a polymeric matrix.
- load-optimized connection solutions are sought. Taking into account the lightweight construction, the use of continuous fiber reinforced plastics in particular continues to increase. These must often be material and non-positively connected with metallic or ceramic components and components.
- Load-bearing element of the continuous fiber reinforced plastics are usually glass fibers, carbon fibers, aramid fibers or basalt fibers.
- the aim of the invention is to produce a positive or positive connection between metal or ceramic and reinforcing fiber.
- the bonding of metal or ceramic with fiber composite components is largely by mechanical joining techniques, such as screws, rivets or clinching.
- the gluing or encapsulation of the joining partners is used.
- This pure material connection is a high effort to operate in order to ensure a uniform adhesion / adhesion of the joining partners.
- hybrid metal-FKV compounds and the metallic or ceramic joining partners are provided with a structuring to the boundary layer metal FKV a combination of material and
- FKV continues to occur through the transition of polymeric matrix and load-bearing fibers (fiber-matrix adhesion).
- the weak point of the compound is thus the polymeric matrix with the lowest strength values within the material composite.
- the object of the invention is to provide composite components in which at least one first joining partner made of a metallic or ceramic material with a second joining partner of a fiber composite material formed with reinforcing fibers and a polymeric matrix are joined, which achieve increased strength and load capacity. According to the invention, this object is achieved by a method having the features of claim 1.
- a composite component is defined by claim 9.
- connecting fibers connecting fibers, filaments or wires (hereinafter referred to as connecting fibers) at a connection point or in a connection region through gaps which are present between reinforcing fibers, and openings which are formed in a first joining partner, be passed through a textile process.
- connecting fibers connecting fibers, filaments or wires
- a positive connection is formed.
- no material forming the polymeric matrix is present during the formation of the positive connection with the connecting fibers, or no polymeric matrix is formed at least in the connection region.
- viscous polymeric matrix material is injected or infiltrated into the junction region.
- fibers of a polymeric material that form a fabric with the reinforcing fibers as a precursor may be converted to a polymeric matrix so that the tie fibers are embedded in the polymeric matrix.
- reinforcing filaments or wires can be used instead of reinforcing fibers or additionally. In the following, however, predominantly only the term reinforcing fibers is to be used.
- the connecting fibers such as the reinforcing fibers themselves, can be provided with a size in order to achieve better wettability in matrix infiltration and better adhesion to the matrix in the cured state.
- the formation of the polymer matrix can be carried out in a molding tool in which the first joining partner and the second joining partner are arranged at least in the region of the connection point.
- the polymeric matrix material with suitable viscosity in the mold with be injected with increased pressure and penetrate into cavities between the reinforcing and the connecting fibers and possibly in openings and existing cavities, so that all fibers are embedded in the polymeric matrix material after its solidification.
- at least part of a metallic or ceramic joining partner to be bonded in a material-bonded manner to the polymeric matrix material.
- the viscosity of the polymeric matrix material can be determined by suitable temperature, the addition of a solvent or the use of a two-component polymer, in which a component is a hardener or
- Crosslinker is to be favorably influenced.
- the polymeric matrix may be a thermoplastic, an elastomer or a thermosetting resin system.
- Connecting fibers can pass through openings in at least one
- a second joining partner may be a braid, knit or scrim of reinforcing fibers, which may preferably be continuous fibers.
- a textile technology integration (sewing, weaving, embroidery, etc.) of threads, fibers or wires (glass, carbon, basalt, aramid, metal, ceramic) can be made in the textile composite.
- Threads, fibers or wires can be used as connecting fibers and fix the reinforcing fibers with a metallic or ceramic joining partner. They should be able to produce such a positive or non-positive connection between the load-bearing reinforcing fibers and a metallic or ceramic joining partner.
- a metallic or ceramic joining partner can be used, for example, as a sheet, plate, mesh, braid, foil or porous Be designed foam. In this joining partner perforations in particular holes, perforations or predefined open spaces may be present. For example, in the case of metal foils having a thickness of less than 100 ⁇ m, these can also be dispensed with if in each case a formation of an opening can be achieved when the connecting fibers are passed through.
- openings can be used to carry out at least one connecting fiber.
- these openings can for example be precisely controlled and / the connecting fiber (s) are passed and are wrapped on the bottom with a lower thread.
- As a connecting fiber and several processed into a thread or twisted fibers can be used.
- the hybrid joining to the metallic or ceramic joining partner can be effected by the connecting fiber (s) themselves or the metallic or ceramic joining partners connected by means of textile technology.
- An additional optional connection between metallic joining partners can be made by welding, soldering and / or thermal joining with reactive multilayers.
- the introduction of the connecting fibers takes place in the textile state before the injection / infiltration with the polymeric matrix material or before the consolidation of semi-finished textile products produced with hybrid yarn, which is formed with reinforcing fibers and polymeric fibers.
- the polymeric matrix which forms part of the FKV can be used to at least partially form the polymeric matrix.
- the formation of the polymeric matrix may also be achieved with polymeric material which is present in a form other than polymeric fibers in a FRP as a semi-finished product, for example in the form of a powder.
- the polymeric matrix can be achieved by consolidation of a suitable matrix material.
- the connecting fibers should advantageously be introduced at an angle of less than 90 ° in the layer structure of the FKV and continue to be particularly advantageous textile technology connected to the reinforcing fibers of the FKV in order to exploit the largest possible area for the introduction of force can.
- a direct force transmission between metal / ceramic and reinforcing fibers can be made possible, which can achieve higher strengths than the polymeric matrix.
- defects in the composite can be avoided.
- the connecting fibers and, for example, a metallic film material can still take place in the textile technological state and the consolidation of the polymeric matrix material of the FRP is only subsequently realized, the polymeric material does not have to be remelted during the production of the composite component. It is also possible to combine thermosets with metals or ceramics in which a renewed remelting is actually not possible.
- the composite components according to the invention can be used in particular in lightweight construction with a focus on automotive, aviation and energy technology.
- FIG. 1 shows an example of a first joining partner
- FIG. 2 shows the joining partner according to FIG. 1, which is arranged in a connection region of a second joining partner;
- Figure 3 is a schematic sectional view through a part of a
- FIG. 4 shows an example of a composite component according to the invention with four first joining partners according to FIG. 1, which are connected to a second joining partner.
- FIG. 1 shows an example of a plate-shaped first joining partner 1 made of steel.
- apertures 1.1 are arranged in five rows, formed in the joining partner 1.
- the first joining partner 1 is positioned in relation to a second joining partner 4, which in this example is formed with carbon fibers as reinforcing fibers 2, such that the openings 1.1 are arranged with respect to a connection region.
- the further openings 1.2 are positioned outside the outer edge of the second joining partner 4.
- the first joining partner 1 can be enclosed in the connecting region on two sides with reinforcing fibers 2.
- perforations 1.1 and spaces between reinforcing fibers 2 connecting fibers 3 are meandering passed in this example, whereby a positive connection of the two joining partners 1 and 4 can be achieved.
- Reinforcing fibers 2 are arranged in this example in multiple layers and on two opposite sides of the first joining partner 1. Following this, at least in the connection region with a polymeric material, a matrix is formed in which the reinforcing fibers 2 and the connecting fibers 3 and the part of the first joining partner 1 are embedded, so that in addition a cohesive connection can be achieved.
- connection region At least in the connection region, if a polymeric matrix is already embedded in the reinforcing fibers 2 in other regions of a second joining partner 4, application of a suitable polymeric material results in the formation of a matrix in which the reinforcing fibers 2, the connecting fibers 3 embedded and a first joint partner 1 of
- Matrix material is bordered.
- FIG. 4 shows an example of a composite component in which four first joining partners 1 according to FIG. 1 are connected to a second joining partner 4 made of FRP, and further openings 1.2 protrude beyond the outer edge of the second joining partner 4, so that they protrude for connection with egg - Another component can be used.
- the textile consisting of continuous fibers individual layers of the reinforcing fibers 2 (scrim, fabric, knitted fabric) are piled according to the required material thickness to be achieved in a preform.
- a composite component close to the final contour can be removed.
- bores or openings 1.2 are then introduced for connecting the FKV joining partner with the metallic overall structure. These holes locally damage the fiber composite structure formed with the reinforcing fibers 2. It comes to delamination and the interruption of the power flow within the layer structure of the reinforcing fibers.
- the metallic screw-on elements can be glued to the surface of the composite component. This purely cohesive connection does not allow optimized power transmission from the reinforcing fibers to the metallic structure.
- metallic inserts can also be integrated during the injection or infiltration process of the polymeric matrix material. The polymer matrix material which has penetrated between the free spaces of the fiber composite then encloses the metal in the material bond and ensures the bonding strength.
- a metal sheet for example, may have been perforated as the first joining partner 1 in the lateral edge region.
- These prefabricated connections are integrated into the standard layer structure so that the unperforated sheet metal region of the first joining partner 1 can be arranged outside the actual component form or in the closing region of the molding tool.
- the composite component is infiltrated in the mold, wherein both the fiber layers of the compound, the metal flange and the connecting fibers 3 and the unmodified fiber layers, which form the second joining partner 4 in addition to the reinforcing fibers 2, are enclosed.
- the metal flanges as the first joining partner 1 can thus be connected to the fiber composite structure as the second joining partner 4, both as a material and as a positive fit.
- the connecting fibers 3 should be oriented forcefully at an angle between 20 ° to 90 ° to the surface of a plane in the reinforcing fibers 2 of the second joining partner 4 made of FKV, through gaps between the reinforcing fibers 2 and / or through openings 1.1 are passed to a correspondingly favorable To achieve positive fit and to influence the power transmission over the gain and the connecting fibers 2 and 3 advantageous.
- the connecting fibers 3 are in direct contact with the FKV's load-bearing reinforcing fibers 2 whereby the power line is directly between metal and load-bearing reinforcing fibers 2 without having to be conducted through the polymeric middle layer of the lower strength matrix material which reduces the hybrid linkable loads due to material.
- a 2.5 shaped surface is present on a metallic first joining partner 1, to which first the dry reinforcing fibers 2 are fixed by welding.
- first the dry reinforcing fibers 2 are fixed by welding.
- the connection region within the permissible bending radius of the reinforcing fibers 2, the metal surface of the first joining partner. 1 replicate.
- the fixation of the load-bearing reinforcing fibers 2 in the dry state initially takes place via the metallic connecting fibers 3.
- the dry reinforcing fibers 2 can be infiltrated with duroplastic matrix material and joined to a further additional joining partner 4 made of FRP and the same thermoset matrix material.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Moulding By Coating Moulds (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016211156.6A DE102016211156A1 (de) | 2016-06-22 | 2016-06-22 | Verfahren zur Herstellung eines Verbundbauteils und ein Verbundbauteil |
| PCT/EP2017/064358 WO2017220372A1 (de) | 2016-06-22 | 2017-06-13 | Verfahren zur herstellung eines verbundbauteils und ein verbundbauteil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3475047A1 true EP3475047A1 (de) | 2019-05-01 |
Family
ID=59054129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17729471.7A Withdrawn EP3475047A1 (de) | 2016-06-22 | 2017-06-13 | Verfahren zur herstellung eines verbundbauteils und ein verbundbauteil |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3475047A1 (de) |
| DE (1) | DE102016211156A1 (de) |
| WO (1) | WO2017220372A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1048442B1 (de) * | 1999-03-31 | 2003-11-12 | Alcan Technology & Management AG | Kunststoffbauelement mit Einlegeteilen |
| FR2891190B1 (fr) * | 2005-09-29 | 2007-11-09 | Chomarat Composites Soc Par Ac | Complexe de renforcement mecanique destine a etre incorpore dans une piece composite |
| DE102006041653A1 (de) * | 2006-08-24 | 2008-02-28 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verbundstruktur und Verfahren zur Herstellung einer Verbundstruktur |
| DE102012010424B4 (de) * | 2012-05-23 | 2014-02-13 | Technische Universität Dresden | Verfahren zur Herstellung eines Verbundbauteils und ein mit dem Verfahren hergestelltes Verbundbauteil |
| DE102012223220A1 (de) * | 2012-12-14 | 2014-06-18 | Leichtbau-Zentrum Sachsen Gmbh | Turbinenschaufel, insbesondere Endstufenlaufschaufel für eine Dampfturbine |
| DE102014011120B4 (de) * | 2014-07-26 | 2018-09-13 | Audi Ag | Verfahren zum Fügen eines FVK-Bauteils an ein Metall-Bauteil |
| GB2533429A (en) * | 2014-12-19 | 2016-06-22 | Airbus Operations Ltd | A metallic-composite joint |
-
2016
- 2016-06-22 DE DE102016211156.6A patent/DE102016211156A1/de not_active Ceased
-
2017
- 2017-06-13 EP EP17729471.7A patent/EP3475047A1/de not_active Withdrawn
- 2017-06-13 WO PCT/EP2017/064358 patent/WO2017220372A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016211156A1 (de) | 2017-12-28 |
| WO2017220372A1 (de) | 2017-12-28 |
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