EP2766172A2 - Halbzeug aus einem verbund von fasern in einer kunststoffmatrix und verfahren zum gewinnen von bauteilen aus derartigem halbzeug - Google Patents
Halbzeug aus einem verbund von fasern in einer kunststoffmatrix und verfahren zum gewinnen von bauteilen aus derartigem halbzeugInfo
- Publication number
- EP2766172A2 EP2766172A2 EP12778623.4A EP12778623A EP2766172A2 EP 2766172 A2 EP2766172 A2 EP 2766172A2 EP 12778623 A EP12778623 A EP 12778623A EP 2766172 A2 EP2766172 A2 EP 2766172A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- semifinished product
- composite
- semi
- fibers
- matrix
- 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.)
- Ceased
Links
- 239000011265 semifinished product Substances 0.000 title claims description 46
- 239000000835 fiber Substances 0.000 title claims description 44
- 239000002131 composite material Substances 0.000 title claims description 30
- 239000011159 matrix material Substances 0.000 title claims description 26
- 229920003023 plastic Polymers 0.000 title claims description 18
- 239000004033 plastic Substances 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 6
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000001746 injection moulding Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 238000004040 coloring Methods 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 229920001746 electroactive polymer Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
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
- B29C70/003—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised by the matrix material, e.g. material composition or physical properties
Definitions
- Semi-finished product made of a composite of fibers in a plastic matrix and method for obtaining components from such semi-finished products
- the invention relates to semi-finished products and components obtained therefrom.
- the semifinished product considered here essentially consists of a usually multi-layered composite of mechanically highly loadable fibers, such as glass, carbon or aramid, which extend uninterruptedly over the entire dimensions of the semifinished product.
- the composite geometry - such as the fabric or the scrim of this fabric - enters into the load capacity of the semifinished product and then of the component produced therefrom.
- This fiber composite of typically about 0.2 to 0.3 millimeters thick individual layers is embedded in a matrix in the form of an impregnation or lamination of in particular a polymer such as polypropylene, polyamide, thermoplastic polyurethane or polyphenylene sulfide.
- thermoplastic-shaped component is characterized after curing, especially by high strength and stiffness with low specific weight.
- CONFIRMATION COPY The present invention is based on the technical problem to interpret a generic semi-finished stun less susceptible and otherwise cheaper producible and versatile.
- the invention provides for the fabric of the composite to be enclosed in the matrix not to be interwoven with weft fibers through the structure of parallel warp fibers - and thereby wavy - but to form successively flat layers of unidirectional fiber progressions pivoted from one another. This also largely avoids the intersection cavities of variable cross sections occurring adjacent to the tissue and to be filled with matrix material.
- the individual layers of the mutually parallel linear fibers are not "loose” on each other, but they are sewn together at their intersections, as it is already known as such from DE 36 36 300 AI, according to a reinforcing insert for be inserted into a mold plastic parts orthogonal to each other oriented threads of different softening points and different extensibility, which are arranged in the form of a Geleges, which is held together by a binding chain in the form of a complex knit, while ensuring relative movements of the threads against each other.
- functional elements can also be complicated geometry such as latching hooks or - ⁇ sen, hinge parts or seals made of thermoplastic material after - or even in the - two- or three-dimensional deformation of the construction Part are molded onto the thermoplastic matrix of the semifinished product.
- a multi-component injection molding is preferably realized in the interests of rational production to eliminate repeated re-clamping between different injection molds for different materials .
- the cut composite semi-finished product is flattened in a press before any injections are made in an injection mold. But it can also be done in the injection mold itself first, before the injection molding of functional parts of the matrix, with the introduction of pressure and heat, a two-dimensional flattening of the cut semifinished product, which should provide (apart from the mentioned Anspritzept) flat component. In any case, if it is necessary anyway to move into an injection mold, it is expedient to flatten in this form before the injection of functional parts such as a sealing edge.
- By appropriate profiling of the injection molding tool even a certain three-dimensional shaping of the semifinished product can be achieved without first having to use a separate thermoforming tool before it is introduced into the injection mold. The deformation takes place here as well, as in the plating in the injection mold, by the pressure exerted on closing the mold, depending on the shape if necessary, then further increased by the introduction of the injection molding material.
- an at least single-layer paint layer wetting on one of the surfaces of the component or on certain areas thereof. It is recommended to use a scratch-resistant or self-healing protective lacquer on a lacquer layer resulting in the luster and possibly color effect, between which a primer and the component were first applied.
- Such an effect varnish may also be selected for particular functionalities, such as silver paint for an antenna function.
- a patchwork semi-finished product made of locally different matrix materials and colors or composite structures and their fibers opens up a particularly wide range of possible applications.
- To broad extension of functionality not only in terms of mechanical properties, but also in particular with regard to electrical and high-frequency performance of the semi-finished leads a larger or at least partial supplementation of the composite by carbon fibers or finest metal wires (especially steel or copper). This allows regions of different stiffness to be delimited from one another and also to produce ornamental impressions or to define predetermined conductor track geometries in their course and their effective cross-section.
- a capacitive sensor that can be used, for example, as an electrical proximity switch or touch switch is obtained when the semifinished product is deposited or equipped with a full-surface or line or net-like electrode.
- As such electrode can therefore serve electrically conductive fibers in the fabric.
- This electrode with the matrix as a dielectric can then, for example, be connected to an oscillating circuit as part of an oscillating circuit. be connected to the terminal-determining capacity whose value changes significantly when approaching about a fingertip.
- the lightweight component according to DE 10 2006 048 920 B3 which is designed to be lightning-proof and electrostatically charged in contrast to the fibers already present in the fiber composite material, in contrast, additionally contains electrically conductive particles in the resin and / or electrically conductive fibers, which are embedded in the resin in an unwoven manner.
- the fiber to be processed is dyed accordingly, or their composite is colored behind or back-painted or the composite is deposited a color foil before the thus prepared composite in a - not necessarily transparent but at least translucent - matrix is embedded.
- the matrix has a color cast, especially if it is a color neutral plastic.
- This color cast is noticeably compensated by the fact that a coloring psychology is chosen as complementary color as possible to color or back-color the composite or for him deposited color foil to undesirable color appearance, thereby to approximately neutralize the color cast.
- a yellowish color which is often to be expected in the case of colorless plastic due to aging, is effectively counteracted by blue to violet coloration or background dyeing of the composite in the sense of a color-neutral to white semi-finished product.
- a component formed from such semifinished product is to be partially transilluminated, for example for signaling or display purposes, it is (or even its semifinished product) locally, in particular geometrically configured, milled out to the surface locally.
- the strength properties of the component in the specific application are not critical, it is also quite possible for at least the outer layer of the multilayer composite to be milled or milled off. It is expedient in any case, the free-milled areas in the sense of a light guide function with transparent plastic again tunespritzen and possibly even several such areas by means of the optical fiber material strip-shaped or larger area to connect each other.
- a semifinished product of a multilayer fiber fabric embedded in a plastic matrix is therefore much more versatile if, in accordance with one aspect of the present invention, the mutual pivoting angles of unidirectional fibers in the individual layers are adapted to the expected mechanical or electrical requirements, with fibers sewn together at their intersection. Locally dissimilar fibers, composite structures or matrices effectively form a patchwork semi-finished product with correspondingly variable application possibilities.
- Semi-finished products made of any fibrous fabrics in their plastic matrix can be shaped into a flat or at least slightly curved component in an injection mold, instead of in a press or thermoforming mold; which is particularly advantageous if, in any case, a transfer into an injection mold is provided, for example because the component deformed semifinished product in it, for example, in multi-component injection molding still functional elements of different mechanical properties to be molded.
- a transfer into an injection mold is provided, for example because the component deformed semifinished product in it, for example, in multi-component injection molding still functional elements of different mechanical properties to be molded.
- a paint coating can be applied through the injection molding tool to a surface of the component.
Landscapes
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011115803.4A DE102011115803B4 (de) | 2011-10-12 | 2011-10-12 | Halbzeug aus einem Verbund von Fasern in einer Kunststoffmatrix und Verfahren zum Gewinnen von Bauteilen aus derartigem Halbzeug |
| PCT/EP2012/004275 WO2013053487A2 (de) | 2011-10-12 | 2012-10-12 | Halbzeug aus einem verbund von fasern in einer kunststoffmatrix und verfahren zum gewinnen von bauteilen aus derartigem halbzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2766172A2 true EP2766172A2 (de) | 2014-08-20 |
Family
ID=47080424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12778623.4A Ceased EP2766172A2 (de) | 2011-10-12 | 2012-10-12 | Halbzeug aus einem verbund von fasern in einer kunststoffmatrix und verfahren zum gewinnen von bauteilen aus derartigem halbzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2766172A2 (de) |
| DE (1) | DE102011115803B4 (de) |
| WO (1) | WO2013053487A2 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012024294B4 (de) | 2012-12-12 | 2025-01-09 | Oechsler Aktiengesellschaft | Bauteil mit Faserverbundwerkstoff |
| DE102013213711A1 (de) | 2013-07-12 | 2015-01-15 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt | Verfahren zur Herstellung eines Strukturbauteils für Kraftfahrzeuge aus einem Organoblech |
| DE102014013289A1 (de) | 2014-09-14 | 2016-03-17 | Heiko Klingenberg | Verfahren zur Herstellung eines Faserverbundwerkstoffes aus Glas oder Carbonfasern durch Beschichtung der Fasern mit wasserverdünnbaren Lacken vor dem Umform- oder Hinterspritzungsprozesses und die Weiterverarbeitung zu Dekorativen Kunststoffbauteilen im innen und Aussenbereich von Automobilen und die Herstellung von Sportartikeln oder Hartfaserplatten, sowie die partielle Durchleuchtungsmöglichkeit derartiger Objekte |
| DE102017213548A1 (de) * | 2017-08-04 | 2019-02-07 | Bayerische Motoren Werke Aktiengesellschaft | Kapazitive Näherungsschaltereinrichtung |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3636300A1 (de) | 1986-10-24 | 1988-04-28 | Verseidag | Flaechengebilde aus fasern, insbesondere als verstaerkungseinlage fuer kunststoffteile |
| DE19957906A1 (de) | 1999-12-01 | 2001-06-28 | Schunk Kohlenstofftechnik Gmbh | Verfahren zur Herstellung eines Faserverbund-Bauteils sowie Vorrichtung zur Herstellung eines solchen |
| DE10250765B4 (de) | 2002-10-30 | 2005-06-30 | Wfs Werkzeug- Und Formenbau Schmidt Gmbh & Co.Kg | Verfahren zum Formen eines Formteils mit Klappe und Formteil mit Klappe |
| ITTO20020989A1 (it) | 2002-11-14 | 2004-05-15 | Fiat Ricerche | Tessuto attivo, materiale composito comprendente tale tessuto, e procedimento per l'ottenimento di tale tessuto e di tale materiale composito. |
| DE102006009344B4 (de) | 2006-03-01 | 2016-11-24 | Man Truck & Bus Ag | Verfahren zur Herstellung einer Baueinheit aus mittels eines Filmscharniers miteinander verbundenen Profilformteilen |
| DE102006048920B3 (de) | 2006-10-10 | 2008-05-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Elektrisch leitendes Leichtbauteil und Verfahren zu seiner Herstellung |
| DE102009055912A1 (de) * | 2009-11-27 | 2011-06-09 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Verfahren zur kontinuierlichen Herstellung von Stapelfasergelegen aus endlich langen Verstärkungsfasern mit gerichteter Faserorientierung |
| DE102010001634A1 (de) | 2010-02-05 | 2011-08-11 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Coburg, 96450 | Verfahren zum Herstellen eines Bauteils aus einem Organoblech |
| DE102010028247A1 (de) | 2010-04-27 | 2011-10-27 | Lisa Dräxlmaier GmbH | Interieurbauteil mit künstlicher Oberflächengestaltung und Verfahren zu dessen Herstellung |
| AT511349B1 (de) | 2011-09-21 | 2012-11-15 | Kapsch Group Beteiligungs Gmbh | Faserhalbzeug, faser-verbundwerkstoff und verfahren zu deren herstellung |
-
2011
- 2011-10-12 DE DE102011115803.4A patent/DE102011115803B4/de active Active
-
2012
- 2012-10-12 EP EP12778623.4A patent/EP2766172A2/de not_active Ceased
- 2012-10-12 WO PCT/EP2012/004275 patent/WO2013053487A2/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011115803B4 (de) | 2018-04-26 |
| DE102011115803A1 (de) | 2013-04-18 |
| WO2013053487A2 (de) | 2013-04-18 |
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