DE3412002C1 - Process for the preparation of polyurethane material which can be crosslinked by electron beams, and the use thereof for electrical applications - Google Patents
Process for the preparation of polyurethane material which can be crosslinked by electron beams, and the use thereof for electrical applicationsInfo
- Publication number
- DE3412002C1 DE3412002C1 DE19843412002 DE3412002A DE3412002C1 DE 3412002 C1 DE3412002 C1 DE 3412002C1 DE 19843412002 DE19843412002 DE 19843412002 DE 3412002 A DE3412002 A DE 3412002A DE 3412002 C1 DE3412002 C1 DE 3412002C1
- Authority
- DE
- Germany
- Prior art keywords
- polyurethane
- crosslinking agent
- materials
- resistance
- granulate
- 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.)
- Expired
Links
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
- H01B3/302—Polyurethanes or polythiourethanes; Polyurea or polythiourea
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
-
- 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
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/203—Solid polymers with solid and/or liquid additives
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Abstract
Description
Das Vernetzungsmittel soll höchstens bis zu 40% in der Mischung enthalten sein, da die Verarbeitung des Materials im Extruder sonst erschwert wird oder die verwendbare Strahlendosis zu niedrig ausfallen muß. The crosslinking agent should not exceed 40% in the Mixture must be included, as the processing of the material in the extruder is otherwise difficult or the usable radiation dose must be too low.
Das Verfahren nach der Erfindung wird im folgenden als Ausführungsbeispiel erläutert. The method according to the invention is described below as an exemplary embodiment explained.
In einen Behälter, bei welchem es sich beispielsweise um einen Trommelmischer handeln kann, werden in Granulatform vorliegendes thermoplastisches Polyurethan-Elastomer und Vernetzungsmittel eingefüllt. Die Mengen sind dabei so aufeinander abgestimmt, daß auf 100 Teile Polyurethangranulat beispielsweise 20 Teile eines in flüssigem Zustand befindlichen Vernetzungsmittels kommen. Gegebenenfalls muß das Vernetzungsmittel vorher so weit erwärmt werden, bis es flüssig ist. In a container, which is for example a drum mixer can act are thermoplastic polyurethane elastomer present in granulate form and filled with crosslinking agent. The quantities are coordinated in such a way that that for 100 parts of polyurethane granules, for example, 20 parts of a liquid State of the crosslinking agent. Optionally, the crosslinking agent must be heated beforehand until it is liquid.
Der Behälter wird dann verschlossen und das Gemisch wird solange darin gelassen, bis das Vernetzungsmittel vollständig in das Polyurethangranulat eindiffundiert ist. Die dafür benötigte Zeit hängt davon ab, wieviel Teile Vernetzungsmittel dem Polyurethangranulat hinzugegeben wurden. The container is then sealed and the mixture is kept for as long left in until the crosslinking agent is completely in the polyurethane granules is diffused. The time required for this depends on how many parts of the crosslinking agent were added to the polyurethane granules.
Das Eindiffundieren des Vernetzungsmittels kann dadurch beschleunigt werden, daß das Gemisch bewegt wird, was beispielsweise durch Bewegung des Trommelmischers oder durch ein Rührwerk erfolgen kann. This can accelerate the diffusion of the crosslinking agent be that the mixture is moved, for example by moving the drum mixer or can be done by an agitator.
Es ist auch möglich, das Gemisch zu erwärmen, wodurch die Zeit des Eindiffundierens weiter verkürzt werden kann. Wenn den 100 Teilen Polyurethangranulat beispielsweise 20 Teile Vernetzungsmittel hinzugegeben werden und das Gemisch auf 1200C erwärmt wird, dann ist das Vernetzungsmittel etwa in 15 Minuten so in das Granulat eindiffundiert, daß alle Teilchen eine trokkene Oberfläche haben. It is also possible to heat the mixture, reducing the time of the Diffusion can be further shortened. If the 100 parts of polyurethane granulate For example, 20 parts of crosslinking agent are added and the mixture up 1200C, then the crosslinking agent is so in about 15 minutes Granulate diffuses in so that all particles have a dry surface.
Das in dem Behälter aufbereitete Polyurethangranulat kann in einen Extruder gefüllt werden und beispielsweise kontinuierlich als Mantel auf einen elektrischen Leiter oder eine elektrische Leitung extrudiert werden. The processed polyurethane granulate in the container can be used in a Extruder are filled and, for example, continuously as a jacket on an electric Conductors or an electrical line can be extruded.
Der so isolierte Leiter bzw. die so isolierte Leitung können anschließend direkt durch eine Elektronenstrahlanlage gezogen werden, in welcher der Mantel kontinuierlich vernetzt wird. Erhalten wird dann ein mit Polyurethan isolierter Leiter bzw. eine solche Leitung, dessen bzw. deren Mantel die weiter oben angeführten hervorragenden Eigenschaften des vernetzten Polyurethans aufweist. Die Strahlendosis liegt je nach Menge des eingesetzten Vernetzungsmittels und der zu vernetzenden Wandstärke zwischen 3 und 40 Mrad. Die erreichbaren Vernetzungsgrade liegen bei einer Strahlendosis von 15 Mrad beispielsweise bei 73% und von 25 Mrad bei 78%.The conductor or line insulated in this way can then can be drawn directly through an electron beam system in which the jacket is continuous is networked. A conductor or a conductor insulated with polyurethane is then obtained such a line, whose jacket the outstanding above Has properties of the crosslinked polyurethane. The radiation dose depends on Amount of the crosslinking agent used and the wall thickness to be crosslinked between 3 and 40 Mrad. The degree of crosslinking that can be achieved is one radiation dose of 15 Mrad for example at 73% and of 25 Mrad at 78%.
Dem Gemisch aus Polyurethangranulat und Vernetzungsmittel können auch andere Zusätze hinzugegeben werden. Solche Zusätze sind beispielsweise Flammschutzmittel, Alterungsmittel und liydrolyseschutzmittel. The mixture of polyurethane granulate and crosslinking agent can other additives can also be added. Such additives are, for example, flame retardants, Aging agents and anti-hydrolysis agents.
- Leerseite -- blank page -
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843412002 DE3412002C1 (en) | 1984-03-31 | 1984-03-31 | Process for the preparation of polyurethane material which can be crosslinked by electron beams, and the use thereof for electrical applications |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843412002 DE3412002C1 (en) | 1984-03-31 | 1984-03-31 | Process for the preparation of polyurethane material which can be crosslinked by electron beams, and the use thereof for electrical applications |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3412002C1 true DE3412002C1 (en) | 1985-12-12 |
Family
ID=6232193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19843412002 Expired DE3412002C1 (en) | 1984-03-31 | 1984-03-31 | Process for the preparation of polyurethane material which can be crosslinked by electron beams, and the use thereof for electrical applications |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3412002C1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0214602A2 (en) * | 1985-09-04 | 1987-03-18 | Sumitomo Electric Industries Limited | Molding of urethane resin composition |
EP0226409A2 (en) * | 1985-12-09 | 1987-06-24 | Sumitomo Electric Industries Limited | Method for producing thermoplastic polyurethane compositions and articles capable of thermal recovery made therefrom |
-
1984
- 1984-03-31 DE DE19843412002 patent/DE3412002C1/en not_active Expired
Non-Patent Citations (1)
Title |
---|
NICHTS-ERMITTELT * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0214602A2 (en) * | 1985-09-04 | 1987-03-18 | Sumitomo Electric Industries Limited | Molding of urethane resin composition |
EP0214602A3 (en) * | 1985-09-04 | 1988-05-18 | Sumitomo Electric Industries Limited | Molding of urethane resin composition |
EP0226409A2 (en) * | 1985-12-09 | 1987-06-24 | Sumitomo Electric Industries Limited | Method for producing thermoplastic polyurethane compositions and articles capable of thermal recovery made therefrom |
EP0226409A3 (en) * | 1985-12-09 | 1988-05-18 | Sumitomo Electric Industries Limited | Thermoplastic polyurethane compositions and articles capable of thermal recovery made therefrom |
US4820782A (en) * | 1985-12-09 | 1989-04-11 | Sumitomo Electric Industries, Ltd. | Article having thermal recovery property |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3215679C2 (en) | Liquid crystal display device | |
DE2652683C3 (en) | Anisotropic, electrically conductive plate or film-shaped body and method for its production | |
DE2519574B2 (en) | Insulated power cable and process for its manufacture | |
DE1900126A1 (en) | Non-flowable anaerobic adhesive | |
DE1292387B (en) | Process for the production of graft copolymers | |
DE1494084B2 (en) | Shaped bodies made from fluorocarbon polymers and process for their production | |
DE2312670A1 (en) | CONNECTION FOR ELECTRICAL CABLES AND METHOD OF MANUFACTURING IT | |
DE2345320C2 (en) | Process for the production of a self-regulating electrical resistance body | |
EP0186725B1 (en) | Shaped pvc article | |
DE2422914C2 (en) | High or extra high voltage electrical cable | |
DE2642567A1 (en) | METAL OXYDE VARISTOR WITH IMPROVED ELECTRICAL PROPERTIES | |
DE3412002C1 (en) | Process for the preparation of polyurethane material which can be crosslinked by electron beams, and the use thereof for electrical applications | |
EP0375685B1 (en) | Filler for longitudinal sealing of electrical and/or optical cables | |
DE3150909C2 (en) | Filling substance for longitudinal sealing of electrical and / or optical cables and lines | |
DE2029725B2 (en) | Insulated wire | |
DE892240C (en) | Process for joining polyethylene with vulcanizable rubber | |
DE2607516C3 (en) | Process for the production of a layered insulation for electrical cables by extrusion, in which at least one plastic layer is produced which contains a linked polyolefin modified with silane | |
DE102004048154A1 (en) | Device for liquid-tight or gas-tight mutual delimitation of two rooms | |
DE3304715C2 (en) | ||
DE1669732A1 (en) | Electrically insulating materials and structures made from them | |
DE2142844A1 (en) | Halving adhesive | |
DE3424128C2 (en) | ||
DE2937708A1 (en) | CONDUCTING POLYMERS | |
DE2352450C2 (en) | Stabilized insulating material based on polyolefin, in particular based on a cross-linked polyethylene | |
DE3150911C1 (en) | Filling substance for longitudinal sealing of electrical and / or optical cables and wires |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8363 | Opposition against the patent | ||
8331 | Complete revocation |