WO2018133935A1 - Interconnexion de couches d'isolation à base de silicone - Google Patents

Interconnexion de couches d'isolation à base de silicone Download PDF

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Publication number
WO2018133935A1
WO2018133935A1 PCT/EP2017/051052 EP2017051052W WO2018133935A1 WO 2018133935 A1 WO2018133935 A1 WO 2018133935A1 EP 2017051052 W EP2017051052 W EP 2017051052W WO 2018133935 A1 WO2018133935 A1 WO 2018133935A1
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WIPO (PCT)
Prior art keywords
silicone rubber
microwave
cable
silicone
crosslinking
Prior art date
Application number
PCT/EP2017/051052
Other languages
German (de)
English (en)
Inventor
Wojciech MOTYL
Klaus BITTERWOLF
Original Assignee
Leoni Kabel Gmbh
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.)
Filing date
Publication date
Application filed by Leoni Kabel Gmbh filed Critical Leoni Kabel Gmbh
Priority to PCT/EP2017/051052 priority Critical patent/WO2018133935A1/fr
Publication of WO2018133935A1 publication Critical patent/WO2018133935A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/46—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes silicones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/28—Treatment by wave energy or particle radiation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
    • H01B19/04—Treating the surfaces, e.g. applying coatings

Definitions

  • the present invention relates to a method of manufacturing a cable or cable core having one or more silicone-based insulation layers. Furthermore, the invention relates to cables or cable cores with bubble-free insulating layer based on silicone, prepared by this method. In addition, the invention relates to means for carrying out the method, in particular a microwave system.
  • An electrical cable usually comprises at least one metallic conductor, hereinafter also referred to as “cable core” or “conductor”, which is sheathed.
  • a conductor can also consist of several sheathed cable cores, which are combined into units and in turn are sheathed once or several times.
  • silicone rubber based / silicone based materials can be used, whereby in one cable different sheaths of different materials may be present.
  • Silicone rubber-based materials are applied uncrosslinked to the substrate, for example on a cable core, and then crosslinked.
  • This crosslinking has hitherto been carried out at high temperatures in infrared (IR) furnaces (see FIG. 1 a). This is particularly disadvantageous, since the Jardin embarrassedeile existing at the time of networking at these high temperatures
  • EP1900767 B1 discloses a process for the production of silicone foams using microwave radiation.
  • the synthetic procedure described erfor ⁇ changed the addition of magnetite to the absorption of microwave radiation.
  • blowing agents are used to produce foams.
  • silicone-based sheathings for cables or cable cores can be crosslinked by the use of microwave radiation.
  • a metallic conductor is inserted and / or performed in a microwave chamber.
  • the microwave radiation couples into the conductor, the resulting "microwave field" spreads radially symmetrically and runs along the conductor, so that even different geometries can be fully networked (ie the microwave radiation is guided along the metallic conductor and the conductor serves as a kind Antenna).
  • temperatures are not so high that the materials of the cable could outgas.
  • the present invention relates to a method for producing a cable or a cable core, comprising one or more silicone-based insulation layers, comprising the steps: a) applying an uncured silicone rubber-containing composition containing polysiloxanes which the basic building block Si (R, R * included) 0, wherein R and R 'represent inde ⁇ pendently organic substituents, with different Si (R, R') (> Units can be present in a polysiloxane molecule, by means of an extrusion process
  • the silicone rubber-containing composition contains no dielectric inorganic additives other than silica / silicon oxides; and b) crosslinking the applied silicone rubber-containing mass in a monomode microwave chamber with continuous radiation of 2450 MHz ⁇ 100 MHz while continuously passing the applied silicone rubber-containing mass through the mono-mode microwave chamber, wherein the crosslinking is in accordance with one or more of both of the following take place:
  • the invention relates to the use of a microwave system comprising
  • the invention relates to a cable or cable core produced by the method according to the invention.
  • silicone-based insulation layers can be produced on a substructure containing temperature-sensitive materials, for example a cable or cable core covering, for the purpose of a multi-layer construction. So far, it has not been possible to apply a silicone layer to a polyethylene layer or a layer of comparable polyolefin and to crosslink it. In the previously known method of crosslinking insulation ⁇ layers based on silicone used temperatures were too high. With the microwave technique based method of the present invention, lower temperatures may be used so that reflow of the materials already present prior to the application of the silicone layer can be avoided.
  • braids of e.g. Aramid can be coated with silicone bubble-free in higher wall thicknesses.
  • a non-bubble-free coating is possible with known methods only with limited wall thicknesses.
  • a further advantage of the method according to the invention is that the microwave beams are advantageously coupled into the metallic conductor of the cable, the cable core and / or the sheathing and the crosslinking reaction is accelerated.
  • the inventive method is thus more efficient and faster.
  • the conductor in the microwave chamber has a positive effect on the heating. If a metallic conductor is introduced into the waveguide, a coaxial structure results.
  • This has the advantage that the microwave is immediately coupled into the metallic part and the resulting "microwave field" propagates radially symmetrically and runs along the conductor. So the microwave does not run into the empty microwave chamber, where it is reflected by the housing, but can be coupled into the center of the line.
  • two effects are two effects.
  • the microwave immediately inserts into the metallic conductor and, on the other hand, the microwave passes through the silicone insulation layer. As a result, a larger area is "irradiated".
  • the microwave irradiation of the uncrosslinked silicone rubber-containing mass is carried out in a microwave chamber, wherein the microwave radiation is generated by a magnetron and irradiated by means of a waveguide.
  • the coupling of the microwave radiation in the conductor leads to an unexpected disadvantage, namely that the radiation from the microwave chamber can escape through the conductor into the environment.
  • this radiation is “captured" again by the absorber arrangements and at least partially reflected back into the microwave chamber
  • various temperature conditions or a temperature gradient are created in known processes using a plurality of IR ovens, so that the crosslinking initially occurs
  • the absorbers according to the invention make possible a different construction with only one energy source, ie irradiation of the energy exclusively into the microwave chamber
  • the absorbers also increase the safety of the microwave system since they protect the working personnel from radiation.
  • microwave radiation used in the invention suffers no power loss in depth. The microwave penetrates completely into the material and heats it evenly. In IR, the heating is through the
  • a method of making a cable or cable core having one or more silicone-based insulating layers comprising the steps of: a) applying an uncrosslinked silicone rubber-containing composition comprising polysiloxanes containing the basic building block Si (R, R ') O, wherein R and R 'are independent represent organic substituents, wherein different SiC ⁇ R ⁇ O units may be present in a polysiloxane molecule, by means of an extrusion process
  • the unit may already have one or more insulation layers as a sheath of the cable cores to ⁇ ,
  • the silicone rubber-containing composition contains no dielectric inorganic additives other than silica / silicon oxides; and b) crosslinking the applied silicone rubber-containing mass in a monomode microwave chamber with continuous radiation of 2450 MHz ⁇ 100 MHz while continuously passing the applied silicone rubber-containing mass through the mono-mode microwave chamber, wherein the crosslinking is in accordance with one or more of both of the following take place:
  • At least one absorber arrangement is arranged on at least one of the openings of the microwave chamber in order to absorb and at least partially reflect the microwave radiation. Since the microwave radiation couples into the conductor, that is to say the metallic cable core, there is a certain power loss without the absorber arrangement according to the invention that radiation exits the microwave chamber, so that at least partially reflecting back the radiation is advantageous.
  • the starting material i. the metallic cable core, a cable core, or a plurality of combined into one unit cable cores, which may already be covered, to be wound on a winding device.
  • the starting material is then unwound and, optionally after further treatment, passed to an extruder where it is coated with the uncrosslinked silicone rubber-containing composition.
  • the starting material enters through an opening in the microwave chamber and through an opposite opening back out of the microwave chamber again.
  • the umman ⁇ tete product or intermediate product may optionally be rewound on a winding device. It is of course possible at any point of the process to perform additional, additional process steps, such as the application of release agents against the sticking together of the cable on the winding device (coil).
  • a silicone rubber-based sheath is applied to a cable core or a unit of cable cores, the unit already having one or more sheaths.
  • the coupling of the microwave radiation in the conductor has a positive effect because the radial symmetry of the microwave field is more ⁇ layer structure suitable for irradiation.
  • the peroxide crosslinking and addition crosslinking according to the invention does not require the presence of atmospheric moisture, as is the case, for example, with LSR silicones crosslinking in room temperature.
  • the alkenyl substituents are preferably terminal.
  • the alkenyl groups participate in the crosslinking reaction. 3.
  • the process of embodiment 1 or 2, wherein the uncrosslinked silicone rubber-containing composition comprises:
  • polysiloxane molecules in which one or more of R and K are vinyl groups, preferably the polysiloxanes are vinyl group-containing polydimethylsiloxane, and / or
  • hydrophobic fumed silica which is preferably surface-modified.
  • the silicone-rubber-containing composition particularly preferably contains only polysiloxanes and silicon oxide (s), and optionally crosslinking agents and / or catalysts.
  • Fumed silica or fumed silica is made entirely of amorphous silica particles (SiO 2), which are aggregated into larger ⁇ A units. These have a very good dipole moment and are very well activated by microwaves. According to the invention no microwaves ⁇ additive must therefore be added. In addition, the presence of the electrical conductor causes the use of energy to be improved.
  • SiO 2 amorphous silica particles
  • the uncrosslinked silicone rubber-containing composition may contain 0-15% lower viscosity polydimethylsiloxanes than polysiloxane molecules.
  • the uncrosslinked silicone rubber-containing composition is high-temperature crosslinking, and preferably at a temperature of above 95 ° C, preferably in a range of 110 ° C to 220 ° C, crosslinkable.
  • the residence time, based on 1 cm Bestrah ⁇ coupling portion, in the inventive method is preferably from 0.012 s to 0.006 s.
  • the production rate is thus preferably between 50 and 100 m per minute.
  • the uncrosslinked silicone rubber-containing composition is solid (MQ / VMQ) or liquid (LSR) and the degree of polymerization of the uncrosslinked polysiloxanes is preferably 5,000-10,000 for solid silicone rubber and 600-1,800 for liquid silicone rubber.
  • the uncrosslinked silicone rubber-containing composition is solid (MQ / VMQ), i. it is not LSR.
  • radicals R and R 'of the polysiloxanes are independently selected from the group consisting of substituted or unsubstituted Ci-C 8 alkyl groups and substituted or unsubstituted Ci-Cs-alkenyl groups. Fluorine atoms are not preferred substituents. More preferably, the radicals R and R 'are independently selected from the group consisting of methyl, phenyl, vinyl, and fluorine-modified Ci-C 5 alkyl groups. The C 1 -C 8 -alkyl groups and C 1 -C -alkenyl groups are preferably unsubstituted.
  • the radicals R and R are therefore independently selected from the group consisting of methyl, phenyl, and vinyl
  • the silicone rubber-containing composition contains dimethyl-vinylmethyl-siloxane (VMQ) or ⁇ , ⁇ -divinylpolydimethylsiloxane more than 80% of the radicals R and R x are methyl groups and less than 20% are vinyl or phenyl groups, with vinyl groups being present
  • VMQ dimethyl-vinylmethyl-siloxane
  • ⁇ , ⁇ -divinylpolydimethylsiloxane more than 80% of the radicals R and R x are methyl groups and less than 20% are vinyl or phenyl groups, with vinyl groups being present
  • 80% -90% of the radicals R and R 'are methyl groups and 10% -20% are vinyl or phenyl groups
  • about 80% of R and R 'are methyl groups and about 20% are vinyl or phenyl groups with vinyl groups present
  • the uncrosslinked silicone rubber-containing composition is preferably polydimethylsiloxanes (MQ) and / or copolymers of dimethylsiloxane and vinylmethylsiloxane (VMQ).
  • VMQ silicones which are preferred in the present case, non-vinyl-specific peroxides, preferably DCLBP, are used.
  • the silicone rubber-containing composition is based on a one-component silicone rubber, wherein the polysiloxane is either peroxide-crosslinking and the peroxide is mixed, or addition-crosslinking, wherein the crosslinker is already in the polysiloxane is bound and the platinum catalyst is mixed.
  • the silicone rubber-containing composition is based on a two-component silicone rubber, which are addition-crosslinking polysiloxanes in which the platinum catalyst in component A and the crosslinker in component B contained and mixed together just before use.
  • silicone rubber-containing mass 5-40 wt .-% Si0 2 , for example 5 wt .-% Si0 2 , and 5-70%, preferably 20-40%, pyrogenic Si0 2 or precipitated silica.
  • the amount of Si0 2 can be determined, for example, after ashing of the silicone in a muffle open.
  • silicone rubber-containing composition does not contain ferrites, e.g. Magnetite, and / or propellant contains.
  • Propellants are gases or chemical compounds that release gases or water under crosslinking conditions, e.g. Carbonate.
  • silicone rubber-containing composition except silicon oxide / silicon oxides, no dielectric, inorganic additives, such as silicon carbide, silicon carbonitride, Kohlenstoffnanotubes; Iron compounds (e.g., iron carbonyls), carbon black, and metal oxides, especially iron oxide or iron oxide-containing metal oxides.
  • a "wire” is a single, solid metal conductor / strand.
  • a "stranded wire”, eg round strand, pointed strand or flat strand, consists of bundled wires.
  • a core or cable core has a metallic cable Core core, which is sheathed with one or more insulating layers.
  • a “cable” contains cores that are stranded together, optionally with fillers or other elements, and are encased in one or more layers. Conductors can be stranded in pairs or triples, the elements can be stranded one or more layers with fillers for gusset filling and form a unity.
  • PTFE glass silk
  • polyamide polypropylene or cotton filler
  • the wires and strands of copper, or copper, which has a layer support such as tin, nickel or silver on ⁇ has.
  • a first insulating layer based on silicone can be applied to the metallic conductor, ie wire / wires or strand / strands.
  • a subsequent layer for example a second or third layer
  • several combined cable cores can be provided with a silicone-based insulation layer. Either cable cores vers can ⁇ approaches and are optionally provided with further constituents and then surrounded with an insulating layer based on silicone.
  • the unit of several cable cores may already be provided with one or more sheathing (s) and a subsequent layer, eg a second or third layer, is applied to the layer (s) already present on the unit.
  • silicone-based insulation layer further layers can be applied to the cable core or the cable. It is also possible to apply a second or further silicone-based insulation layer directly to a silicone-based insulation layer or to a layer above the silicone-based insulation layer.
  • the insulation materials of the stranded cables can be made of high performance plastics such as fluoropolymers, PEEK, PTFE.
  • the wires can be isolated with silicone, then the wires are stranded and sheathed once again with silicone.
  • the silicone can also be used for the gusset filling to make the cable round.
  • the silicone can be applied directly to the metal, or via another polymer layer.
  • the silicone sheath can be used as a core insulation and / or as a sheath material and / or as a filler. 24.
  • the insulating materials underlying the silicon-based insulating layer are temperature-sensitive materials such as polyolefins, PVC, and thermoplastic elastomers. Such materials would not survive the introduction of temperature by conventional infrared radiation in the crosslinking of silicones. However, since the process according to the invention makes possible milder conditions, the sensitive layers can be spared.
  • substructure may consist of materials or coated, which tend to degas at high temperatures, which may be in the form of bubbles on the silicone insulation. In the use of microwaves according to the invention, temperatures are not so high that the materials could outgas.
  • substrate refers to the substrate to which the silicone-based insulation layer is applied.
  • the mesh pulls air moisture and therefore leads to bubble formation in the silicone at the temperature.
  • the cable comprises a current-carrying element or signal-carrying element, for example a current-carrying wire or a current-carrying conductor and / or a conductor element and / or signal transmission element.
  • a current-carrying element or signal-carrying element for example a current-carrying wire or a current-carrying conductor and / or a conductor element and / or signal transmission element.
  • the cable core is made of one wire (s), e.g. Flat wire, a wire bundle, a wire mesh, e.g. Braided hose, or consists of a strand / multiple strands.
  • wire e.g. Flat wire
  • wire bundle e.g.
  • wire mesh e.g. Braided hose
  • the cable is an endless cable, or the conductor is an endless conductor, or the cable core is an endless cable core, and preferably has a length of at least 500 meters.
  • the cable core has a diameter of> 1 mm.
  • the metal in the core of the cable has a positive influence on the crosslinking of the silicone rubber-containing compound.
  • the metallic conductor acts like an antenna.
  • the microwave couples into the ladder. With the housing of the microwave chamber creates a coaxial structure, which means a homogeneous field propagation between the conductor and the microwave chamber.
  • the invention also relates to a cable or cable core with a bubble-free silicone insulation layer, which can be produced or manufactured using the method according to one of the preceding embodiments, wherein the wall thickness of the silicone-based insulation layer is preferably from 0.5 mm to 4.0 mm.
  • the protruding cable or cable core preferably contains a temperature-sensitive sheath / layer, e.g. a sheath / layer of polyolefin, PVC, or thermoplastic elastomers, or polymers having a temperature of ⁇ 150 ° C.
  • a temperature-sensitive sheath / layer e.g. a sheath / layer of polyolefin, PVC, or thermoplastic elastomers, or polymers having a temperature of ⁇ 150 ° C.
  • the invention also relates to a microwave system which can be used for crosslinking the silicone rubber ⁇ -containing composition according to the inventive method.
  • the microwave system may be configured according to the following embodiments:
  • Microwave system comprising
  • At least one absorber arrangement on at least one of the openings of the microwave chamber the absorber arrangement having one or more chambers, preferably 2-8 or 3-6, particularly preferably 3-4, chambers, and
  • the opposing openings of the mono-mode microwave chamber are designed to pass products in particular with uncrosslinked silicone rubber-containing mass provided cable / cable wires / conductors during the microwave ⁇ warming.
  • the openings of the microwave chamber and absorber for cables are adapted with a cross section of 0.5 mm 2 to 125.0 mm 2 .
  • the distance between the cable and the microwave chamber or the absorber is at least 1.0 cm.
  • the chambers of the absorber arrangement (hereinafter also the "absorber”) are likewise provided with opposing openings so that the products can also be passed through these chambers.
  • the chambers of the absorbers and the mono-mode microwave chamber are arranged in a row. For example, in the manufacture of continuous cable cable coatings, a cable transport system is used that continuously passes the cable product through all of the chambers, including the mono-mode microwave chamber, then further processing steps or the cable product is produced as a finished product.
  • the number of chambers and the length of the absorber are dependent on the line to be crosslinked and the overall structure of the microwave system.
  • a higher performance can be achieved on the product to be processed. This is insbesonde ⁇ re important if to be heated part of the product poorly absorbed microwave radiation.
  • a silicone rubber-based sheath is applied to a cable core or unit of cable cores, the unit already having one or more sheaths.
  • the geometric design has been adapted so that the energy maximum lies in the microwave chamber.
  • a person skilled in the field of High frequency technology can make such an adjustment, in particular a necessary impedance matching of the structure.
  • microwave absorbing additives preferably silicon carbide or a polymer containing a microwave absorbing additive ⁇ coated.
  • the walls of the chambers are made of aluminum, the walls may be coated and can include additional components, for example additional game ⁇ metal plates or chamber walls made of aluminum or other material to enhance the absorbent capacity.
  • the chamber could be equipped with a double wall.
  • At least one absorber assembly is adapted with a plurality of chambers in cross-section at the opening of the mono-mode microwave chamber, to absorb the exit ⁇ de microwave radiation, and / or
  • the chambers of the absorber assembly are provided with two opposing openings.
  • At least one absorber arrangement is arranged after the microwave chamber in such a way that a cable can be passed through this absorber arrangement after passing through the microwave chamber;
  • At least one absorber arrangement is arranged in front of the microwave chamber in such a way that a cable can be led through this absorber arrangement before passing through the microwave chamber.
  • M6 Microwave system according to one of the embodiments M1-M5, wherein at least one absorber arrangement is present, which has two or more chambers and a round and / or concentric geometry.
  • M7 Microwave system according to embodiment M6, wherein the two or more chambers of the at least one absorber arrangement are spaced from each other.
  • Microwave system according to one of the embodiments M1-M7, wherein the chambers of the absorber arrangement have openings with a diameter of> 1mm millimeter.
  • This adaptation can be carried out semi-automatically or preferably fully automatically by software-assisted evaluation of the scattering parameters, which are known to the person skilled in the art, e.g. is known by stepless screws.
  • a cable core preferably has a diameter of> 1 mm.
  • a microwave system according to any of embodiments M1-M9, wherein the monomode microwave chamber and the chambers of the absorber assembly are configured to transport an endless cable through the chambers for irradiation purposes.
  • MII Microwave system according to one of the embodiments MI-MIO, wherein the magnetron has a power consumption of up to 6 kilowatts.
  • a microwave system according to one of the embodiments Ml-Mll, wherein the mono-mode microwave chamber has a cylindrical or rectangular shape, wherein the mono-mode microwave chamber and the chambers of the absorber arrangement comprise two opposing openings, through the middle of an existing cable transport system, a silicone rubber containing mass on i) a metallic cable core, or
  • the microwave chamber may be cylindrical or rectangular.
  • the geometry depends on which local point the field maximum for silicon crosslinking builds up.
  • the mechanical length of the waveguide is adapted to the electrical length of the transmission path, so that the field maximum shifts into the microwave chamber.
  • the cable transport system consists of a cable reel unwinder and rewinder (as detailed in relation to cable manufacture elsewhere).
  • the microwave chamber can be cylindrical or rectangular.
  • the geometry depends on which local point the field maximum for silicon crosslinking builds up.
  • M17 Use of a system consisting of a magnetron and a hollow ⁇ conductor, which connects the magnetron with the mono-mode microwave chamber, for microwave crosslinking of insulating layers based on silicone, preferably to a microwave crosslinking according to the method of embodiment 1.
  • M18 Use of an impedance matching system in a method according to any one of Embodiments 1-32.
  • the impedance matching can be carried out by mechanical displacement of the short circuit or idle in the waveguide or an adjustment semi-automatic or preferably fully automatically by software-based evaluation of the scatter parameters by vectorial network analysis.
  • M19 Use of microwave absorbers in a method according to any of the embodiments described herein, attached to the openings of the microwave chamber to reflect back or absorb leakage radiation into the chamber. In this case, the absorbers are so spaced from the openings or the microwave chamber, that the maxima of the radiation can be adjusted so that they fall into the chambers of the absorber.
  • Cable or cable core with bubble-free insulating layer based on silicone produced or manufactured using the method according to any of embodiments 1-32, wherein the wall thickness of the insulating layer based on silicone is preferably 0.5 mm - 4.0 mm.
  • FIG. 1 a shows a known process for crosslinking silicone coatings by heating in infrared furnaces.
  • FIG. 1b shows the method according to the invention for crosslinking silicone coatings using microwave radiation.
  • Figure 2 shows a series arrangement of 4 absorber chambers, through which a conductor is led with coating of silicone rubber-containing mass.
  • Figure lb shows a cable 14, which is guided over wire guides (coils) 13 by the extruder 12 for Kaltextrusion (about 25 ° C) and then heated in the microwave chamber 11.
  • FIG. 2 shows an absorber arrangement 15 with a series arrangement of four absorber chambers 16, through which a conductor 14 with a coating of silicone rubber-containing compound is guided.
  • cables or cable cores according to the invention can be carried out as described below. 2
  • the system must be cleaned and assembled.
  • the screw and the cylinder are cleaned and the extrusion head is assembled including tools.
  • the coil with the conductor is installed in the unwinder and the conductor itself is passed through the extrusion head.
  • the microwave system is then positioned and aligned so that the conductor passes centrally through the microwave chamber.
  • the uncrosslinked silicone rubber-containing mass is applied to the roll.
  • all components of the uncrosslinked silicone rubber-containing compound are added to the roller and rolled all homogeneously together to form a so-called "coat.” From the coat about 2-3 kg pieces are cut and rolled up fed.
  • the extruder is started. First, it must be completely filled with the material. Once this is done and silicone comes out of the nozzle, a program is started. This program regulates the power of the magnetron as a function of the extrusion speed. First, it is started slowly and the microwave is switched on, after a few seconds the microwave has started up and still has to be adjusted. That the impedance must be adjusted to the cross section of the conductor. However, this is done automatically via software or should be stored as a recipe in the system. Shortly thereafter, the speed is adjusted to production conditions, at the same time the performance of the magnetron is adjusted. The start should be within a few seconds. The networked cable is then wound up on a spool. It may even have to be talcum-treated beforehand or treated with another release agent, but that is independent of the crosslinking process.
  • EP1655328B1 DE19855718, EP1900767 Bl, US 4,980,384, US 4,460,713,

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Abstract

La présente invention concerne un procédé de fabrication d'un câble ou d'un conducteur de câble, ayant une ou plusieurs couches d'isolation à base de silicone. La présente invention concerne en outre des câbles ou des conducteurs de câble ayant une couche d'isolation sans bulles à base de silicone, fabriqués avec ledit procédé. La présente invention concerne également des moyens pour exécuter le procédé.
PCT/EP2017/051052 2017-01-19 2017-01-19 Interconnexion de couches d'isolation à base de silicone WO2018133935A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020125871A1 (fr) * 2018-12-21 2020-06-25 Gerlach Maschinenbau Gmbh Dispositif de réticulation avec applicateur monomode

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269757A (en) * 1979-03-13 1981-05-26 Toray Silicone Company, Ltd. Siloxane compositions which form ceramics at high temperatures
US4460713A (en) 1982-06-25 1984-07-17 Dow Corning Corporation Microwave cured silicone elastomeric foam
FR2548507A1 (fr) * 1983-06-28 1985-01-04 Lambda Technics Int Applicateur a micro-ondes, a densite d'energie ajustable, destine au traitement d'objets au moins en partie polaires
US4980384A (en) 1988-09-05 1990-12-25 Shin-Etsu Chemical Co., Ltd. Foamable silicone rubber composition and method for curing the same
EP0456557A1 (fr) * 1990-05-07 1991-11-13 Shin-Etsu Chemical Co., Ltd. Composition expansible de caoutchouc silicone
US5346932A (en) * 1990-01-26 1994-09-13 Shin-Etsu Chemical Co., Ltd. Silicone rubber composition and method for curing the same
US5916940A (en) * 1996-06-27 1999-06-29 Dow Corning Toray Silicone Co., Ltd. Silicone rubber composition for use in electrical wire covering
EP0945916A2 (fr) 1998-03-23 1999-09-29 Fuji Polymer Industries Co,, Ltd. Plaque en gel silicone moulé, conductrice de la chaleur, absorbant les ondes électromagnétiques et sa méthode de fabrication
DE19855718A1 (de) 1998-06-15 2000-05-31 Rcc Polymertechnik Gmbh Verfahren zur kontinuierlichen Vernetzung von reaktiven Organopolysiloxanen, speziell additionsvernetzbare Siliconkautschuksysteme durch Einwirkung von elektromagnetischen Wellen (Mikrowellen) zur Herstellung von Elastomer-Formkörpern
EP1655328B1 (fr) 2004-11-04 2007-12-19 Wacker Chemie AG Compositions de silicone activable à micro-ondes et articles moulés fabriqués à partir de celles-ci
EP1900767B1 (fr) 2006-09-12 2010-03-31 Wacker Chemie AG Mousse expansée par micro-ondes

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4269757A (en) * 1979-03-13 1981-05-26 Toray Silicone Company, Ltd. Siloxane compositions which form ceramics at high temperatures
US4460713A (en) 1982-06-25 1984-07-17 Dow Corning Corporation Microwave cured silicone elastomeric foam
FR2548507A1 (fr) * 1983-06-28 1985-01-04 Lambda Technics Int Applicateur a micro-ondes, a densite d'energie ajustable, destine au traitement d'objets au moins en partie polaires
US4980384A (en) 1988-09-05 1990-12-25 Shin-Etsu Chemical Co., Ltd. Foamable silicone rubber composition and method for curing the same
US5346932A (en) * 1990-01-26 1994-09-13 Shin-Etsu Chemical Co., Ltd. Silicone rubber composition and method for curing the same
EP0456557A1 (fr) * 1990-05-07 1991-11-13 Shin-Etsu Chemical Co., Ltd. Composition expansible de caoutchouc silicone
US5916940A (en) * 1996-06-27 1999-06-29 Dow Corning Toray Silicone Co., Ltd. Silicone rubber composition for use in electrical wire covering
EP0945916A2 (fr) 1998-03-23 1999-09-29 Fuji Polymer Industries Co,, Ltd. Plaque en gel silicone moulé, conductrice de la chaleur, absorbant les ondes électromagnétiques et sa méthode de fabrication
DE19855718A1 (de) 1998-06-15 2000-05-31 Rcc Polymertechnik Gmbh Verfahren zur kontinuierlichen Vernetzung von reaktiven Organopolysiloxanen, speziell additionsvernetzbare Siliconkautschuksysteme durch Einwirkung von elektromagnetischen Wellen (Mikrowellen) zur Herstellung von Elastomer-Formkörpern
EP1655328B1 (fr) 2004-11-04 2007-12-19 Wacker Chemie AG Compositions de silicone activable à micro-ondes et articles moulés fabriqués à partir de celles-ci
EP1900767B1 (fr) 2006-09-12 2010-03-31 Wacker Chemie AG Mousse expansée par micro-ondes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020125871A1 (fr) * 2018-12-21 2020-06-25 Gerlach Maschinenbau Gmbh Dispositif de réticulation avec applicateur monomode
CN113196874A (zh) * 2018-12-21 2021-07-30 德国爱德华洁兰赫公司 具有单模施加器的交联设备

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