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WO2017076964A1 - Installation pour fabriquer des fibres de carbone - Google Patents

Installation pour fabriquer des fibres de carbone Download PDF

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Publication number
WO2017076964A1
WO2017076964A1 PCT/EP2016/076541 EP2016076541W WO2017076964A1 WO 2017076964 A1 WO2017076964 A1 WO 2017076964A1 EP 2016076541 W EP2016076541 W EP 2016076541W WO 2017076964 A1 WO2017076964 A1 WO 2017076964A1
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WO
WIPO (PCT)
Prior art keywords
fiber
heating
module
rollers
fibers
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
Application number
PCT/EP2016/076541
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German (de)
English (en)
Inventor
Eckhard Beyer
Beata Lehmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority to EP16791004.1A priority Critical patent/EP3371350B1/fr
Publication of WO2017076964A1 publication Critical patent/WO2017076964A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
    • D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
    • D01F9/32—Apparatus therefor

Definitions

  • the invention relates to a plant for the production of carbon fibers.
  • HT high tenacity fibers, whose maximum carbonization temperature is between 1200 ° C and 1500 ° C, are used in automotive engineering in particular.
  • fibers with a higher tensile modulus are used (IM (intermediate modulus) / or HM (high modulus)) / possibly with a negative thermal expansion coefficient, the production of which requires higher carbonization temperatures (IM type: 1,500 ° C. to 1,800 ° C., HM type: 1800 ° C to 3,000 ° C).
  • Table 1 exemplifies the characteristics of the different fiber class types.
  • Carbonation process can be achieved by up to 25%.
  • polyacrylic nitrile fibers PAN
  • PAN polyacrylic nitrile fibers
  • polyolefins such as polyethylene, cellulose,
  • Lignin polyvinyl chloride, phenols and their copolymers can be used.
  • Heating by applying an electrical voltage sets an electrical Minimum conductivity of the fibers to be further heated ahead, which is not available after the stabilization of conventional precursors (electrical conductivity in the ⁇ range). It is therefore an upstream first carbonation zone up to a temperature of at least 600 ° C (PAN precursors) required to achieve electrical resistances of the fibers in the lower kQ range, which allow sufficient electrical conductivity.
  • PAN precursors at least 600 ° C
  • the electrical resistance for PAN precursor fibers can be reduced in the range up to 1200 ° C. It is also known that the carbonation temperature is the crucial
  • Process size is, while the carbonization atmosphere (N2, H2, Ar, vacuum) and bias of the fibers during stabilization are of minor importance.
  • the electrical conductivity increases to about 1300 ° C. This then remains almost constant at higher temperatures. This means that the electrical resistance can only be used as a parameter for online quality control up to a temperature of 1300 ° C.
  • This remodeling process leads to a hole in the center of the cable and can ultimately lead to breakage.
  • Precursorpolymer typ, fiber fineness, presentation form (filament cable, sheets)
  • the electrical resistance is always temperature-dependent (Arrhenius equation).
  • the minimum electrical conductivity can also be achieved by virtue of the fact that the precursor fiber is formed by adding conductive particles, in particular carbon dioxide. conductive nanotubes (CNT). As a result, the electrical resistance heating can also be used for stabilizing the output fibers. Pyrolysis starts in the periphery of the CNTs (electrons migrate within the matrix in the CNTs), so that higher temperatures occur here than in the PAN matrix. Gradually, the pyrolysis spreads in the precursor matrix.
  • At least one fiber formed from a polymeric material or a textile structure made of such fibers in already stabilized form is passed through a plurality of modules as a precursor.
  • at least one module for electrical resistance heating of the fiber (s) at least one further module for heating the fiber (s) by means of a plasma generated with microwaves and / or for heating the fiber (s) by means of one on the fiber (s) directed defocused laser beam formed.
  • fiber is to be used and also understood to mean a textile structure formed from these fibers, for example a woven fabric, knitted fabric or braid.
  • a module should be present in each case, which is designed for electrical resistance heating of the fiber (s).
  • a module which is designed to heat the fiber (s) by means of a plasma generated with microwaves can be arranged in front of a module for electrical resistance heating of the fiber (s).
  • defocused laser beam is formed, thereby reducing the required
  • Installation space for the installation of the system can be reduced.
  • measuring rollers or measuring contacts can act on the fiber (s) with which the electrical conductivity of the fibers can be determined for controlling the heating of the fiber (s).
  • the control can be carried out for all used modules of the system.
  • the feed rate of the fiber (s) can also be controlled.
  • the fiber (s) are guided between pairs of rollers and two pairs of rollers (2, 2 ') arranged one after the other in the advancing direction of movement of the fiber (s) in each case to one pole electrical power source connected.
  • the fiber (s) are / are guided around surfaces of at least two oppositely arranged surface areas of at least two rollers arranged in the advancing movement direction of the fiber (s) and the two rollers are respectively connected to one pole of an electrical voltage source.
  • the least amount of At least two rollers are moved parallel to each other, whereby the way the fiber (s) cover between the respective two rollers in the advancing movement and the time required for this can be changed.
  • the axes of rotation of the at least two rollers aligned parallel to one another can be arranged in different planes, so that they can be arranged offset in at least two axes relative to one another.
  • the fiber (s) can be passed through the thermally insulated heating elements. It can also be a module designed as a conventionally designed continuous furnace.
  • a plurality of heating zones may be provided for successive heating of the fiber (s) in the advancing movement direction.
  • the modules can be combined with each other in a row and thereby arranged in an advantageous order, wherein the respective system can be constructed horizontally, vertically or U-shaped.
  • the precursor material to be carbonized (in particular pre-oxidized material in the form of fibers, one or more parallel adjacent endless filament yarns or rovings or textile fabrics) is led out on one end side of the installation and on the other end side.
  • the inert gases customary for carbonation should be used.
  • the modules can be combined as follows:
  • a module designed for electrical resistance heating can be used, in which
  • Precusorsfasern be introduced with sufficient electrical conductivity in such a module.
  • electrically conductive particles can be fixed or present on and / or in fibers.
  • Carbon nanotubes with a particularly high aspect ratio should preferably be used for this, since they already lead with a small proportion to a sufficiently high electrical conductivity of the fibers.
  • precursor fibers prepared in this way can have a core-shell construction.
  • the electrically conductive particles can be integrated into an outer jacket or form a core which is enclosed by a jacket formed with precursor material.
  • carbon nanotubes for example in a suspension formed with water and optionally a surface-active compound (surfactant), to the surface of a precursor material.
  • a thermal treatment can be carried out by electrical resistance heating in a suitably designed module. leads and a carbonization can be achieved.
  • appropriately trained rollers and electrical contacts can be used, as already described and will be described below. It is thus possible to use electrically conductive fibers or textile structures made of such fibers in a module designed for electrical resistance heating.
  • the electrical resistance can, depending on the content of carbon nanotubes, be increased by 100 V, for example Amperage less than 10 mA and a roll distance of, for example, 35 mm significantly reduced and so a heating by electrical resistance heating lent lent.
  • This first heating zone can be followed by more.
  • the process of the present invention may be configured variably for all three fiber classes (Table 1) and, optionally, optionally combined with a conventional convective heating furnace process.
  • the modules such as oven, microwave plasma and electrical resistance heating can be single or multi-zone.
  • electrical resistance heating electrical direct or alternating electrical current can flow through the fiber (s) to be heated.
  • a heating zone which may preferably consist of graphite and outside a tube (eg made of quartz glass, graphite) are cold - an electrical voltage can be applied, by the electric current flow through the fiber (s) the Fiber material is heated.
  • the fiber material should rest as completely and homogeneously as possible on the roll surfaces in order to keep the electrical contact resistances as small as possible.
  • systems for aligning and positioning the fiber (s), in particular spreading rollers can be arranged in front of the heating rollers.
  • the upper can roll on the electric current-carrying bottom rollers with a constant line pressure, z. B.
  • the carbon fiber material in a zone 1 makes the fiber material more electrically conductive, it is possible to work with reduced electric current strength in the respectively following zone 2 in order not to overheat the material.
  • the roll spacing between the roller pairs connected to an electrical voltage source can be changed.
  • the yarn tension of the fiber (s) can be set separately in each heating zone by selecting the speeds of the respective input and output roller pair.
  • pipe lining can be carried out by means of temperature-resistant reflectors / mirrors.
  • An electrical resistance heater can be controlled and / or regulated online. This allows the carbonation levels to be set in a defined manner.
  • the control and / or regulation can be performed in each case in the feed direction of the fiber (s) last heating zone.
  • the measuring roller pair for the control can be arranged in front of the spreader rollers.
  • a pair of measuring rollers for controlling the feed rate and / or the electric current for the electrical resistance heating of the fiber (s) can be arranged immediately after the exit of the heating zone. These rollers can detect the electrical resistance of the electrically conductive fiber (s) and, based on this, emit a control or regulating signal for changing the amperage (voltage) characteristic on the heated rollers so that, in the case of deviations of the electrical resistance from the desired value, directly into the Process can be intervened to a constant
  • Carbonation can be carried out here to a constant electrical resistance (a constant degree of carbonization), possibly fluctuations of the fiber diameter and resulting different electrical resistances can be compensated.
  • the resistance heating can also be used at
  • Carbonization temperatures up to 2450 ° C can be used.
  • the process control can, for example, indirectly via a temperature measurement, e.g. by pyrometer or by measurement with thermal imaging camera through viewing window done.
  • Stabilized fiber material may first be heated and modified by a development through a module in which the fiber material is generated with a plasma generated from at least one microwave plasma source. As a result, the electrical resistance is reduced, so that a further module which is designed for electrical resistance heating can connect to this module in the feed movement direction of the fiber material.
  • a further module which is designed for electrical resistance heating can connect to this module in the feed movement direction of the fiber material.
  • measuring points for determining the electrical conductivity of the fiber (s) are advantageously present.
  • a module in which an additional heating by means of laser radiation, in the direction of feed movement of the fiber (s) can connect.
  • the chamber wall of this module should at least partially be transparent to laser radiation, so that at least one laser beam can be directed onto the surface of the fiber (s).
  • the chamber wall can be formed, for example, at least partially made of quartz glass.
  • a lubrication device At the last module before a winding a lubrication device can be arranged.
  • the system can be extended by an additional module for stabilization.
  • This should preferably consist of a microwave plasma module in 02 atmosphere.
  • the heating of the fiber (s) with stationary rollers that do not rotate take place.
  • the non-rotating rollers can be moved but translational, so that the respective axis of the respective central longitudinal axis of the roller can be moved.
  • the distance between the central longitudinal axes and thus also the distance between the surfaces of two juxtaposed rollers can be changed.
  • other suitable means such as roller pairs, between which the fiber (s) are transported, may be.
  • a stationary roller may consist of a flexible heating band (hollow roller).
  • One of the two rollers of a roller pair (or both) can be mounted vertically displaceable in order to adjust the fiber length between the two rollers and thus additionally to be able to influence the heat energy transferred into the fiber.
  • the structure can also be modular. Preferably in the feed zone in the last heating zone, a combined control and regulation of the electrical current (voltage) can be integrated, as has already been described above.
  • a pair of rollers for transporting the material can also be a feed tray, which is a matched to the material engraving, z. B. grooves, may have, are used.
  • the design of the heating elements can also be carried out in the case of fibers and in particular flexible surfaces of small width so that the materials are not guided along the surface of the heating surfaces, but through the interior of heating elements which are provided with electrical contacts for the application. Final electric current are provided. These contacts can be arranged one after the other in the advancing movement direction. It can be arranged successively several such heating elements and with several contacts by electrical resistance heating a gradual heating of the fiber (s) can be achieved.
  • the heating elements may have a different geometry, e.g. have a circular or semi-circular cross-section, so that the translationally moving (n) fiber (s) of the Schuelementwandung, which is preferably thermally insulated, is partially enclosed / and the fiber (s) through small arranged at the end faces of the heating elements through openings the heating elements are passed.
  • the length can be adjusted to the desired feed rate of the fiber (s) (the longer the heating elements are, the higher the feed rate can be).
  • additional fiber guiding elements e.g. with spring force imprinted, due to the contact force itself rotating rollers, are used.
  • the structure can be modular.
  • a combined control and regulation of the current (voltage) can be integrated, as already described above.
  • the heat energy remains in the heating element and thus in a limited volume. This results in a higher efficiency and the reduction of required heating energy.
  • the feed rate at which the fiber (s) are moved through individual modules can be controlled or controlled in the individual modules.
  • buffers for the fiber (s) are to be provided between modules which are arranged one after the other in the feed movement direction.
  • the fiber (s) can be rolled up and stored in rolled form before being fed to a subsequently arranged module. This is usually the case when, in the advancing direction of movement, a module operating at a greater feed rate precedes a module through which the fiber (s) travel at a lower rate
  • Voschub Zabonia be moved, is arranged.
  • Precursor Anlagen (n) up to the finished carbon fiber can be achieved in a significantly reduced time.
  • the required space can be reduced, since a shortening of the system length is possible.
  • defined heating rates may also be maintained without intermediate cooling.
  • the controllability of the entire process as well as the degree of carbonation and thus the structural or mechanical properties in defined, precursor-dependent temperature windows can be achieved by improved online process control.
  • the process control can be made significantly more variable and there are any combination of plasma, resistance and laser carbonization possible, so that carbon fibers can be produced with very specific properties.
  • FIG. 1 in schematic form an example of a module for electrical
  • Figure 2 in schematic form a further example of a module for electrical resistance heating with two heating zones
  • FIG. 3 in schematic form a further example of a module for electrical resistance heating with a plurality of heating elements, which form heating zones and
  • FIG. 4 Raman spectrograms for a fiber before and after a treatment by means of electrical resistance heating according to Example 3.
  • fibers 3, which are already partly carbonized and thereby electrically conductive, are conveyed by means of two pairs of rollers 1.
  • two pairs of rollers 2 are arranged at a distance from each other, of which in each case at least one roller is connected to an electrical voltage source.
  • an electric DC voltage source in which one pole connected to one or both in the direction of advance movement of the fibers 3 front (n) and a pole to the then arranged (n) roller (s) 2 and 2 ' are, so that flows through the fibers 3 between the rollers 2 and 2 'for a sufficiently large heating electric current.
  • the achievable temperature increase is influenced by the electric current and the electrical conductivity of the fibers 3.
  • two heating zones 1 and 2 are arranged one after the other in the feed movement direction, so that a stepwise increase in temperature can be achieved.
  • the electrical current or the electrical conductivity of the fibers between or measured directly on rollers 2 or 1 and used for a regulation of the temperature to be reached, thereby influencing the properties of the thus heated Fibers 3 can be taken.
  • a module may be arranged in the advancing movement direction in front of the electrical resistance heating module shown in FIG. 1, in which heating of the fibers 3 is achieved by the influence of a plasma generated by one or more microwave sources.
  • This may advantageously be a device as described in DE 10 2015 205 809 A1, the disclosure of which is fully incorporated by reference.
  • this apparatus for the production of carbon fibers with plasma assistance at least one fiber formed of a polymeric material in stabilized form as a precursor is led out in an elongated chamber in the direction of the fiber (s) at one end side and at the opposite end side.
  • a plurality of pulsed operable magnetrons are arranged in a series arrangement over the length of the chamber.
  • microwaves emitted by magnetrons are directed simultaneously and each with the same phase from two opposite directions on the fiber (s).
  • the magnetrons are connected to an electronic control, which is designed so that a control of the magnetron can be achieved, with which over the length of the chamber, an at least almost homogeneous plasma is formed.
  • pressures below the ambient pressure can be maintained up to a pressure slightly above the ambient pressure, preferably at most 10% more.
  • gases for the treatment of the fiber (s) and the plasma formation the gases usually used for this, in particular argon and nitrogen can be used.
  • magnetrons may be arranged on one side of the chamber.
  • the microwaves emitted by the magnetrons can be guided, as a result of their branching, in each case to coupling elements arranged opposite one another on the longitudinal sides of the chamber and into the interior of the chamber are directed from opposite direction.
  • the energy of the microwaves forms a plasma of gaseous species contained within the chamber. With the achievable temperatures of the plasma formed, the production of carbon fibers can take place more effectively and in a considerably shorter time.
  • Plasma can therefore always be formed between a pair of oppositely arranged coupling elements. In this case, areas occur between adjacently arranged coupling elements, in which the plasma has a lower plasma density. This can be countered with an offset of the oppositely arranged and connected to a common magnetron coupling elements in the longitudinal direction of the chamber and / or a pulsed operation of the magnetron with a phase offset.
  • the phase shift can be achieved by temporarily completely switching off individual magnetrons or operating the
  • Magnetrons can be achieved with targeted varying power.
  • Magentrons are connected to a controller.
  • the fibers 3 can be heated and modified so that a more uniform change in the
  • Morphology or change of the material over the entire cross section of the fibers 3 can be achieved.
  • the module shown in FIG. 1 can also be supplemented in a manner not shown by directing a laser beam onto the electrically resistance-heated fibers 3 and thereby further increasing the temperature.
  • An additional heating can also be done with a separate module in which an additional subsequent heating can be done by means of laser radiation. Regardless of whether the additional heating by means of laser radiation in the module for an electrical resistance heating or a separate module can be done on the technical Teaching, as described in the also not previously published DE 10 2015 204 589, be resorted to.
  • this apparatus for producing carbon fibers at least one fiber formed from a polymeric material is introduced into a heating device via an inlet lock element and can be carried out from the heating device via an outlet lock element.
  • a predetermined voltage of at least one fiber is maintained.
  • the heating device is designed such that a successively higher temperature results from the inlet lock element to the outlet lock element.
  • There is an inert atmosphere in the heater complied with.
  • at least one defocused laser beam is directed onto the surface of the at least one fiber via a window element that is transparent to the at least one laser beam and purged with an inert gas, thereby providing additional heating the at least one fiber can be reached at an elevated temperature by laser radiation absorbed by the fiber material.
  • FIG. 2 shows a further example of an electrical resistance heating of fibers 3.
  • fibers 3 are guided over in this example measuring rollers 11, with which an electrical current pick-up for the determination of the electrical conductivity of the fibers 3 can take place. But also sliding contacts that are pressed against the fibers 3 can be used.
  • the fibers return to two successively arranged rollers 13 ', which are likewise connected in each case to a pole of an electrical DC voltage source, which is also not shown.
  • the fibers 3 are hereby guided around the surfaces of the rollers 13 and 13 'such that they are guided by oppositely arranged surfaces and are in contact therewith. Thereby, the surface of fibers 3, which are simultaneously in direct contact with the electrically conductive surface of the rollers 13 and 13 ', can be increased, thereby improving the electrical current flow and the electric resistance heating with the between two rollers 13 and 13'. flowing electric current achievable increase in temperature of the fibers 3 are increased.
  • the axes of rotation or central longitudinal axes of the rolls 13 and 13 'of a pair of rolls can each be arranged in different planes, so that the contact surface between the roll surface and the fibers 3 can be further increased.
  • rollers 13 'in this example can be moved translationally vertically here, whereby an adjustment of the feed rate, the respective length of the fibers 3, which is influenced by the electrical resistance heating, and / or the tensile stress with the the fibers 3 can be acted upon, can be reached.
  • take-off roll system 14 here with three rolls, one of which serves for deflecting and the pair of rolls for conveying the fibers 3.
  • a pair of measuring rollers 11 is again arranged, with which, together with the in feed movement direction of the front pair of measuring rollers 11 determines the electrical conductivity of the fibers 3 and can be used for a regulation of the electric current and / or the feed rate of the fibers 3.
  • the rollers 13 and 13 ' may be fixed so that they do not rotate. However, there is the optional possibility that they can be moved in translation. The advancing movement of the fiber (s) 3 can then be realized solely with the roller pairs 12 and 14. By varying the distance of the central longitudinal axes of juxtaposed rollers 13 and 13 ', the path traveled by the fibers 3) can be changed, so that the time in which the fiber (s) 3 are affected by the flow of electrical current can be varied can.
  • a pair of measuring rollers 11 which can be used again in conjunction with the pair of measuring rollers 11 at the very end to determine the electrical conductivity of the fibers 3 is again arranged in the advancing direction of movement of the fibers 3.
  • feed roller pairs 12 are again present, which serve to convey the fibers 3. Between the feed roller pairs 12 are several
  • the heating elements 15 and 15 ' are each connected to a pole of a DC electrical power source (not shown), so that between them an electric current flows through the fibers 3, which leads to their heating.
  • the fibers 3 are thereby moved through the heating element pairs 15 and 15 '.
  • an infeed roller pair 12 is also optionally arranged between heating element pairs 15 and 15 ', with which a uniform advancing movement of the fibers 3 can be achieved.
  • the rollers 11, 12 and the heating elements 15 and 15 ' are rigidly fixed. This is also the case with all rolls of the example according to FIG.
  • FIG. 3 also shows sectional views through heating elements 15 or 15 'from which it becomes clear how the electrical contacting of the fibers 3 takes place and how the thermal insulation can be formed.
  • the possibility of carbonization by means of microwaves generated plasma are already and more specifically described in DE 10 2015 205 809 AI.
  • the starting material was positioned in a linear microwave plasma chamber, tensioned and treated accordingly.
  • Various process parameters were varied and test series were processed. An overview of the adjustable parameters is given in Table 1.
  • the duty cycle is the ratio of the time emitted in the microwave and in which no microwaves or microwaves are emitted with significantly reduced power (pulse duration to pulse interval).
  • the fibers 3 are electrically conductively different and further carbonized in the subsequent process by means of electrical resistance heating. For this purpose, several examples will be explained below.
  • PAN fiber 3 which is pre-carbonated by means of plasma support, further carbonized by means of electrical resistance heating.
  • the electrical output resistance is 0.625 ⁇ / cm. With an electrical power of 25.8 W, the fiber 3 is at 700 ° C, with an electric power of
  • PAN fiber 3 which is pre-carbonated by means of plasma support, further carbonized by means of electrical resistance heating.
  • the electrical output resistance is 0.75 ⁇ / cm.
  • the fiber 3 With an electrical power of 25 W, the fiber 3 is heated to 672 ° C, with an electrical power of 91 W to 1228 ° C in an inert atmosphere (Ar) with an electrode spacing of 40 mm at a tensile stress of 3.9 N.
  • PAN fiber 3 which is pre-carbonated by means of plasma support, further carbonized by means of electrical resistance heating.
  • the electrical output resistance is 50 ⁇ / cm. With an electrical power of 25 W, the fiber 3 becomes 775 ° C, with an electric power of 106
  • the electrical resistance of the fiber is 2.8 ⁇ / cm.
  • the fibers are not damaged by the treatment, they have no defects on the surface.
  • the average fiber diameter is reduced from 10 ⁇ to 7 ⁇ .
  • the fiber strength is at least 1000 MPa, individual filaments show significantly higher values of approx.
  • FIG. 4 shows Raman spectra for fiber 3 before carbonization by means of electrical resistance heating and thereafter.
  • PAN fiber 3 which has been pre-carbonated by means of plasma support, further carbonized by means of electrical resistance heating.
  • the electrical output resistance is 3 kQ / cm.
  • the fiber With an electric power of 33 W, the fiber is heated to 500 ° C, with an electric power of 234 W to 1200 ° C in an inert atmosphere (Ar) at an electrode distance of 40 mm and a tensile stress of 3.9 N.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Inorganic Fibers (AREA)
  • Resistance Heating (AREA)

Abstract

L'invention concerne une installation pour fabriquer des fibres de carbone, dans laquelle au moins une fibre formée d'une matière polymère ou une structure textile constituée de fibres polymères sous forme stabilisée est passée en tant que produit semi-fini à travers plusieurs modules. Au moins un module est destiné à chauffer la ou les fibres par résistance électrique, au moins un autre module est destiné à chauffer la ou les fibres ou la structure textile au moyen d'un plasma généré par micro-ondes et/ou pour chauffer la ou les fibres au moyen d'un faisceau laser défocalisé dirigé sur la ou les fibres.
PCT/EP2016/076541 2015-11-05 2016-11-03 Installation pour fabriquer des fibres de carbone Ceased WO2017076964A1 (fr)

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Application Number Priority Date Filing Date Title
EP16791004.1A EP3371350B1 (fr) 2015-11-05 2016-11-03 Installation pour la production de fibre de carbone

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DE102015221701.9A DE102015221701A1 (de) 2015-11-05 2015-11-05 Anlage zur Herstellung von Kohlenstofffasern
DE102015221701.9 2015-11-05

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US12209332B2 (en) 2019-05-17 2025-01-28 University Of Limerick Relating to carbon fibre processing

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DE102016015668A1 (de) 2016-12-23 2018-06-28 Technische Universität Dresden Vorrichtung und Verfahren zur Herstellung von Kohlenstofffasern oder von textilen Gebilden, die mit Kohlenstofffasern gebildet sind
DE102017200494A1 (de) 2017-01-13 2018-07-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Für die Herstellung von Kohlenstofffasern einsetzbares Modul sowie ein Verfahren zur Herstellung von Kohlenstofffasern
DE102017203822B4 (de) 2017-03-08 2019-11-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und ein Verfahren zur Herstellung graphitisierter Kohlenstofffasern oder mit diesen Kohlenstofffasern gebildeten textilen Gebilden

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DE102015205809A1 (de) 2015-03-31 2016-10-06 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung zur Herstellung von Kohlenstofffasern mit Plasmaunterstützung

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