SE447611B - POLYETHEN FORMULATOR FOR INSULATING METAL CONDUCTORS - Google Patents
POLYETHEN FORMULATOR FOR INSULATING METAL CONDUCTORSInfo
- Publication number
- SE447611B SE447611B SE7907051A SE7907051A SE447611B SE 447611 B SE447611 B SE 447611B SE 7907051 A SE7907051 A SE 7907051A SE 7907051 A SE7907051 A SE 7907051A SE 447611 B SE447611 B SE 447611B
- Authority
- SE
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- Prior art keywords
- weight
- polyethylene
- density
- melt index
- vinyl acetate
- Prior art date
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- 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
- H01B3/44—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 vinyl resins; acrylic resins
- H01B3/441—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 vinyl resins; acrylic resins from alkenes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
- C08L23/0861—Saponified vinylacetate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
- Paints Or Removers (AREA)
Description
447 611 jämn ytisolering kan höja avdragshastigheten ytterligare genom a:: till högtryckspolyeten sätta andelar av polypropen och propen~eteu- sampolymerisat. 447 611 even surface insulation can increase the deduction rate further by a :: to high-pressure polyethylene add proportions of polypropylene and propylene copolymer.
Nackdelen med kända polyetenformmassor är, att man är tv:n- gen att använda speciellt framställda polyetener med hög densitet och blandpolymerisat, som gör framställningen av dylika formmassr: ekonomiskt olönsam liksom den omständigheten att dessa produkter är användbara endast till en avdragshastighet av högst 1500 m/min. och för en ledardimension av 0,5 mm i diameter. Dessutom är det känt att blandningar av hög- och lågtryckspolyetener och/eller polypre~ pener utgör en heterogen blandning. Nackdelen med dylika formmassfr blir särskilt märkbar vid användning av mycket höga bearbetningz» hastigheter och små ledardimensioner, då det uppträder tecken på ze- parering och därmed försämring av egenskaperna. Ändamålet med uppfinningen är att framställa polyetenfqrn- massor, varmed man kan isolera ledare av metall, särskilt dylika med ringa diameter och mycket höga avdragshastigheter med jämn ;:~ isolering.The disadvantage of known polyethylene molding compositions is that they are to use specially made high density polyethylenes and blend polymers which make the preparation of such molding compositions: economically unprofitable as well as the fact that these products are usable only for a maximum towing speed of 1500 m / min. and for a conductor dimension of 0.5 mm in diameter. In addition, it is known that mixtures of high and low pressure polyethylenes and / or polypre ~ pener is a heterogeneous mixture. The disadvantage of such molding materials becomes particularly noticeable when using very high machining z » speeds and small conductor dimensions, as there are signs of ze- pairing and thus deterioration of the properties. The object of the invention is to produce polyethylene masses, with which one can insulate conductors of metal, especially such with small diameter and very high deduction rates with even;: ~ insulation.
Uppgiften enligt uppfinningen är att framställa polyete:~ formmassor, som man vid isolering av ledare av metall med jämn jf- isolering kan använda till en avdragshastighet av minst 2500 m/min. och för en ledardiameter av 0,6 - 0,3 mm.The object of the invention is to produce polyethylene: ~ molding compounds, which in the insulation of metal conductors with even insulation can be used at a deduction speed of at least 2500 m / min. and for a conductor diameter of 0.6 - 0.3 mm.
Denna uppgift löses med hjälp av polyeten-formmassor, avs sedda för isolering av metalliska ledare, av polyeten med lägre coh högre densitet och sampolymerisat av eten med alfa-olefiner, even- tuellt polypropen, under tillsats av åldringsskyddsmedel, varvii enligt uppfinningen formmassorna innehåller 94 - 50 viktprocent, företrädesvis 85 - 70 viktprocent, av en högtryokspolyeten, 5 - àš viktprocent, företrädesvis 10 - 25 viktprocent, av en lågtrycksp@~ lyeten och 0,5 - 5 viktprocent av ett eten-vinylacetat-sampolymeri- sat med 2 - 15 viktprocent vinylacetat samt eventuellt polypropexß Företrädesvis innehåller formmassorna 0,5 - 6 viktprocent, företrädesvis 1,5 - 3,5 viktprocent, av en polypropen.This problem is solved with the help of polyethylene molding compositions, para seen for insulation of metallic conductors, of polyethylene with lower coh higher density and copolymerization of ethylene with alpha-olefins, even polypropylene, with the addition of anti-aging agents, varvii according to the invention the molding compositions contain 94 - 50% by weight, preferably 85 - 70% by weight, of a high pressure polyethylene, 5 - àš weight percent, preferably 10 to 25 weight percent, of a low pressure sp @ ~ and 0.5 to 5% by weight of an ethylene-vinyl acetate copolymer. sat with 2 - 15% by weight of vinyl acetate and possibly polypropylene Preferably the molding compositions contain 0.5 - 6% by weight, preferably 1.5 - 3.5% by weight, of a polypropylene.
Det är en fördel då eten/vinylacetat-sampolymerisat är :ar- tiellt förtvâlat och uppvisar en resthalt vinylacetat av 3-5%.It is an advantage when ethylene / vinyl acetate copolymer is: and has a residual vinyl acetate content of 3-5%.
Som högtryckspolyeten kan därvid användas de enligt de vun~ liga förfarandena för radikalisk etenpolymerisation under högt :ryck 3 447 611 framställda produkterna med ett smältindex av 0,1 - 0,5 g/10 minu- ter och en densitet av 0,915 - 0,935 g/cm3, företrädesvis 0,919 - 0,925 g/cm3.As the high-pressure polyethylene, they can be used according to those used the processes of radical ethylene polymerization under high pressure 3 447 611 products with a melt index of 0.1 - 0.5 g / 10 min. and a density of 0.915 - 0.935 g / cm 3, preferably 0.919 - 0.925 g / cm 3.
Den använda lâgtryckspolyetenen har densiteter av 0,939 - 0,960 g/cm3, företrädesvis av 0,945 - 0,955 g/cm3, och ett smältin- dex av 0,1 - 4,0 g/10 minuter (5 kp/109OC), företrädesvis av 0,5 - 2,0 g/10 minuter.The low pressure polyethylene used has densities of 0.939 - 0.960 g / cm 3, preferably of 0.945 - 0.955 g / cm 3, and a melt dex of 0.1 - 4.0 g / 10 minutes (5 kp / 109 ° C), preferably of 0.5 - 2.0 g / 10 minutes.
Polypropenen har företrädesvis en densitet av 0,900 - 0,920 g/cm3 och ett smältindex av 0,1 - 4 g/10 minuter (5 kp/190°C), före- trädesvis av 0,4 - 2,0 g/10 g/10 minuter.The polypropylene preferably has a density of 0.900 - 0.920 g / cm 3 and a melt index of 0.1 - 4 g / 10 minutes (5 kp / 190 ° C), stepwise of 0.4 - 2.0 g / 10 g / 10 minutes.
Framställningen av formmassorna sker i smält tillstånd på konventionella, företrädesvis kontinuerligt arbetande homogenise- ringsaggregat. Komponenterna kan förblandas i en snabblandare el- ler doseras var för sig med konventionella doseringsanläggningar.The masses are produced in a molten state conventional, preferably continuously operating homogenized ring unit. The components can be premixed in a quick mixer or are dosed separately with conventional dosing plants.
Homogeniseringen av komponenterna kan därvid äga rum på en enkel- matarskruv-extruderanordning eller på en dubbelmatarskruv-extruder- anordning, varvid man inställt temperaturprogrammet vid homogenise~ ringen så att 200oC blott i ringa grad överskrides. Framställning genom värmereglerförfarande är fördelaktig. Till formmassorna kan man dessutom sätta antioxidanter, särskilt termostabilisatorer och/ eller koppardesaktivatorer, fyllmedel, glidmedel och/eller pigment.The homogenization of the components can then take place in a single feed screw extruder or on a twin screw extruder device, whereby the temperature program is set at homogenize ~ so that 200oC is only slightly exceeded. Production by heat control procedure is advantageous. To the molding compounds can in addition add antioxidants, especially thermostabilizers and / or or copper deactivators, fillers, lubricants and / or pigments.
Uppfinningen skall i det följande belysas närmare med hjälp av nedanstående utföringsexempel utan att dock vara begränsad till dessa. De fysikaliska karakteristika har bestämts på följande sätt: Täthet enligt TGL 14075 Smältindex enligt TGL 20996.The invention will be further elucidated in the following with the aid of of the following embodiments without, however, being limited to these. The physical characteristics have been determined as follows: Density according to TGL 14075 Melt index according to TGL 20996.
Ojämnheter i ytisoleringen fastställdes visuellt och grade- rades i fem kvalitetssteg: jämn, lätt vågformad, vågformad, ojämn, mycket ojämn.Irregularities in the surface insulation were determined visually and lined up in five quality steps: smooth, slightly wavy, wavy, uneven, very uneven.
Exemgel 1 80 kg högtryckspolyeten med smältindex i2'16 = 0,3 g/10 min. och densiteten 0,921 g/cm3, 20 kg lågtryckspolyeten med smältindex i5'0 = 0,5 g/10 min. och densiteten 0,949 g/cm3 och 1 kg eten-vi- nylacetat-sampolymerisat innehållande 13 viktprocent estergrupper och smältindex 12,16 = 2,2 g/10 min. blandades under tillsättning av 0,1 kg Antioxydans KS på brukligt sätt, homogeniserades i en dubbelmatarskruvextruderanordning och granulerades därefter.Example 1 80 kg high pressure polyethylene with melt index i2'16 = 0.3 g / 10 min. and the density 0.921 g / cm 3, 20 kg low pressure polyethylene with melt index i5'0 = 0.5 g / 10 min. and the density 0.949 g / cm 3 and 1 kg of ethylene new acetate copolymer containing 13% by weight of ester groups and melt index 12.16 = 2.2 g / 10 min. mixed during addition of 0.1 kg Antioxydans KS in the usual manner, homogenized in a twin feed screw extruder and then granulated.
Formmassan har smältindex i2,16 = 0,23 g/10 min- och den- siteten 0,931 g/cm3. Granulatet tillfördes extruderanordningen i 447 611 4 en anläggning för beläggning av ledare av metall genom tryck- sprutning. över den vinkelrätt mot avdragsriktningen stående extruderanordningen transporterades den formbara blandningen i det i 900 vinkel befintliga styrhuvudet. Smältan fördes till en av dubbrör och munstycke bildad ringformig springa och sprutades på ledaren. Därefter fördes den belagda ledaren till en kylanord- ning och rullades upp på en trumma. Enligt ovan beskrivna förfa- ringssätt sprutades polyetenformmassan med en hastighet av 2550 m/min. på en ledare med 0,40 m diameter i ett isolerande skikt av 0,2 m. Som sprutverktyg användes ett munstycke som begränsa- de den för ledarens koercitivkraft ansvariga kontaktlängden av ledaren med smälta till ringa 18 mm. Med kontaktlängd avses sträce kan mellan dubbrörspruta, införande av ledaren i smältan och än- den av sprutverktyget. Härigenom åstadkomes att ledarens koerci- tivkrafter är ringa och därigenom förorsakade sprickor på ledaren uteslutna.The molding composition has a melt index i2.16 = 0.23 g / 10 min- and its density 0.931 g / cm 3. The granulate was fed to the extruder device in 447 611 4 a plant for coating metal conductors by pressure spraying. over it perpendicular to the deduction direction the extruder was transported the moldable mixture in the steering head existing at 900 angles. The melt was carried to one of tubular tube and nozzle formed annular slit and sprayed on the leader. Thereafter, the coated conductor was taken to a cooling device. and rolled up on a drum. According to the procedures described above, method, the polyethylene molding compound was sprayed at a rate of 2550 m / min. on a conductor with a diameter of 0.40 m in an insulating layer of 0.2 m. As a spraying tool, a nozzle was used which limited they the contact length of the leader's coercive force of the conductor with melt to small 18 mm. Contact length refers to stress between the double tube syringe, insertion of the conductor into the melt and that of the spray tool. This ensures that the leader's tive forces are small and thereby caused cracks on the conductor excluded.
Ytisoleringen är jämn fastän en ledare med ringa diameter belägges med användning av ett mycket kort verktyg.The surface insulation is even though a conductor with a small diameter coated using a very short tool.
Exempel 2 Komponenterna enligt exempel 1 homogeniserades genom en flerkomponentdoseringsanordning i ovan nämnda blandningsförhållarfl den i en enkelmatarskruv-extruderanordning med homogeniserings- snäcka. Den bildade formassan fördes, såsom beskrivits i exempel l, till extruderanordningen för bearbetning och sprutades med en avdragshastighet av 2500 m/min. på en ledare med 0,5 mm diameter i ett isolerande skikt av 0,23 mm. Isoleringen är även i detta fall slät och fri från ojämnheter.Example 2 The components of Example 1 were homogenized by a multicomponent dosing device in the above-mentioned mixing ratio fl it in a single feed screw extruder with homogenizing shell. The formed mass was carried as described in examples 1, to the extruder for processing and sprayed with a deduction speed of 2500 m / min. on a conductor with a diameter of 0.5 mm in an insulating layer of 0.23 mm. The insulation is also in this case smooth and free from bumps.
Exempel 3 _ 65 kg högtryckspolyeten med smältindex i = 0,24 g/10 2,16 min. och densiteten 0,923 g/cm3, 35 kg lågtryckspolyeten med smälå~ index islo = l,l g/10 min. och densiteten 0,945 g/cm3 samt 2 kg etenvinylacetat-sampolymerisat innehållande 5,5 viktprocent esterw grupper och smältindex i2'l6 sätt med 0,1 kg Antioxydans KS, homogeniserades på en dubbelmatarfl skruv-extruderanordning och fördes till en bearbetningsanordning.Example 3 65 kg high pressure polyethylene with melt index i = 0.24 g / 10 2.16 my. and the density 0.923 g / cm 3, 35 kg of low pressure polyethylene with melting point index islo = 1.1 g / 10 min. and the density 0.945 g / cm 3 and 2 kg ethylene vinyl acetate copolymer containing 5.5% by weight of ester w groups and melt index i2'l6 method with 0.1 kg Antioxydans KS, was homogenized on a double feeder fl screw extruder device and was fed to a processing device.
Ytisoleringen som erhållits med dessa komponenter enligt det i exempel l beskrivna förfarandet vid avdragshastigheter av 2500 m/min. och en diameter hos den använda ledaren av 0,4 mm är jämn och är i hög grad lämplig för vidare bearbetningsförfarande. = 1,8 g/10 min. blandades på brukligt 5 447 611 Exempel 4 90 kg högtryckspolyeten med smältindex i2 16 = 0,25 g/ I l0 min. och densiteten 0,919 g/cm3, l0 kg lâgtryckspolyeten med smältindex i5,0 = 0,3 g/10 min. och densiteten 0,958 g/cm3 och 4 kg delvis förtvålat eten-vinylacetat-sampolymerisat med smält- index i2'l6 (lgooc) = 85 g/10 min. innehållande 3,5 viktprocent estergruppsrester förblandades med 0,1 kg Antioxydans KS och sat- tes till en homogeniseringsextruderanordning för homogenisering.The surface insulation obtained with these components according to the procedure described in Example 1 at deduction rates of 2500 m / min. and a diameter of the conductor used of 0.4 mm is smooth and is highly suitable for further processing. = 1.8 g / 10 min. mixed on usual 5,447,611 Example 4 90 kg high pressure polyethylene with melt index i2 16 = 0.25 g / IN l0 min. and the density 0.919 g / cm 3, 10 kg of low pressure polyethylene with melt index i0.0 = 0.3 g / 10 min. and the density 0.958 g / cm 3 and 4 kg of partially saponified ethylene-vinyl acetate copolymer with molten index i2'l6 (lgooc) = 85 g / 10 min. containing 3.5% by weight ester group residues were premixed with 0.1 kg of Antioxydans KS and saturated to a homogenization extruder device for homogenization.
Därefter isolerade man enligt exempel l ledaren av metall med dia- metern 0,4 mm med ett isolerande skikt av 0,2 mm vid avdragshastig- heten 2550 m/min.Then, according to Example 1, the metal conductor was isolated with diameters. meter 0.4 mm with an insulating layer of 0.2 mm at the deduction speed heat 2550 m / min.
' Isoleringen är jämn och visar inga tecken på smältbrott.'The insulation is even and shows no signs of melting.
Exempel 5 l00 kg högtryckspolyeten med smältindex iz 16 = 0,28 g/ I l0 min. och densiteten 0,920 g/cm3, 35 kg lâgtryckspolyeten med 5 0 = 0,45 g/10 min. och densiteten 0,950 g/cm3, I 2,5 kg eten-vinylacetat-sampolymerisat innehållande 14 viktprocent smältindex i estergrupper och 3 kg polypropân med smältindex i5,0 = 0,8 g/l0 min. och densiteten 0,910 g/cm blandades på brukligt sätt under tillsättning av 0,1 kg Antioxydans KS, homogeniserades i en dub- belmatarskruv-extruderanordning och granulerades därefter. Form- massan sprutades på en bearbetningsanläggning för framställning av isolerade trådar med en avdragshastighet av 2500 m/min. och i ett isolerande skikt av 0,15 mm på en ledare med 0,3 mm diameter. Som sprutverktyg användes ett munstycke som begränsade den för leda- rens koercitivkraft nödvändiga kontaktlängden av ledaren med smäl- tan till S 9 mm. Den belagda tråden uppvisar aität och jämn isole- ringsyta.Example 5 100 kg high-pressure polyethylene with melt index iz 16 = 0.28 g / IN l0 min. and the density 0.920 g / cm 3, 35 kg of low pressure polyethylene with = 0.45 g / 10 min. and the density 0.950 g / cm 3, IN 2.5 kg of ethylene-vinyl acetate copolymer containing 14% by weight melt index in ester groups and 3 kg of polypropylene with melt index i5.0 = 0.8 g / l0 my. and the density 0.910 g / cm was mixed in the usual manner addition of 0.1 kg of Antioxydans KS, was homogenized in a double belt feeder screw extruder and then granulated. Form- the pulp was sprayed on a processing plant for the production of insulated wires with a pulling speed of 2500 m / min. and in one insulating layer of 0.15 mm on a conductor with a diameter of 0.3 mm. As spraying tool, a nozzle was used which limited it to the necessary coercive force of the conductor with the melting tan to S 9 mm. The coated wire has a tight and even insulation. ringsyta.
Exempel 6 70 kg högtryckspolyeten med smältindex i2 16 = 0,35 g/l0 min. och densiteten 0,922 g/cm3, 30 kg lâgtryckspolyeten med smält- index islo = 0,8 g/10 min. och densiteten 0,956 g/cm3, 3,5 kg del- vis förtvålat eten-vinylacetat-sampolymerisat innehållande 4,8 viktprocent vinylacetat samt 4 kg polypropen med smältindex islo = 0,9 g/10 min. och densiteten 0,910 g/cm3 blandades på brukligt sätt under tillsättning av 0,l kg Antioxydans KS och homogenisera- des på en dubbelmatarskruv-extruderanordning. Formmassan sprutades såsom i exempel l på en ledare av metall med 0,3 mm diameter i ett isolerande skikt av 0,15 mm vid en avdragshastighet av 2509 m/ min. Ytisoleringen är slät och saknar ojämnheter.Example 6 70 kg high-pressure polyethylene with melt index i2 16 = 0.35 g / l0 my. and the density 0.922 g / cm 3, 30 kg of low-pressure polyethylene with melt index islo = 0.8 g / 10 min. and the density 0.956 g / cm 3, 3.5 kg saponified ethylene-vinyl acetate copolymer containing 4.8 weight percent vinyl acetate and 4 kg polypropylene with melt index islo = 0.9 g / 10 min. and the density 0.910 g / cm 3 was mixed as usual with the addition of 0.1 kg of Antioxidant KS and homogenizing on a twin screw extruder. The molding compound was sprayed as in Example 1 on a 0.3 mm diameter metal conductor in an insulating layer of 0.15 mm at a pull-off speed of 2509 m / my. The surface insulation is smooth and has no irregularities.
Claims (6)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD20745178A DD140095B1 (en) | 1978-08-24 | 1978-08-24 | POLYETHYLENE FORMULAS FOR ISOLATION METALLIC HEAD |
| DD20887578A DD154271A4 (en) | 1978-11-06 | 1978-11-06 | POLYETHYLENE FORMULAS FOR ISOLATION METALLIC HEAD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7907051L SE7907051L (en) | 1980-02-25 |
| SE447611B true SE447611B (en) | 1986-11-24 |
Family
ID=25747622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7907051A SE447611B (en) | 1978-08-24 | 1979-08-23 | POLYETHEN FORMULATOR FOR INSULATING METAL CONDUCTORS |
Country Status (6)
| Country | Link |
|---|---|
| DE (1) | DE2930521A1 (en) |
| FI (1) | FI792630A (en) |
| FR (1) | FR2434465A1 (en) |
| PL (1) | PL118862B1 (en) |
| RO (1) | RO77867A (en) |
| SE (1) | SE447611B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0166781B1 (en) * | 1983-12-27 | 1989-09-20 | Sumitomo Electric Industries Limited | Crosslinked polyethylene cable |
| DE19545582C2 (en) * | 1995-12-07 | 2003-03-20 | Alcatel Kabel Ag | Halogen-free insulating material |
| BR112013028282B1 (en) * | 2011-05-04 | 2021-07-06 | Borealis Ag | direct current (dc) power cable, process for producing the same and method for reduction, that is, for the provision of a polymer composition of low electrical conductivity of a dc power cable |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1032728A (en) * | 1962-09-24 | 1966-06-15 | Union Carbide Corp | Improvements in and relating to polymers |
-
1979
- 1979-07-27 DE DE19792930521 patent/DE2930521A1/en not_active Withdrawn
- 1979-08-13 FR FR7920624A patent/FR2434465A1/en active Granted
- 1979-08-17 PL PL21781779A patent/PL118862B1/en unknown
- 1979-08-21 RO RO7998505A patent/RO77867A/en unknown
- 1979-08-23 SE SE7907051A patent/SE447611B/en not_active IP Right Cessation
- 1979-08-23 FI FI792630A patent/FI792630A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| FI792630A (en) | 1980-02-25 |
| PL118862B1 (en) | 1981-11-30 |
| DE2930521A1 (en) | 1980-03-06 |
| RO77867A (en) | 1981-12-25 |
| FR2434465A1 (en) | 1980-03-21 |
| FR2434465B1 (en) | 1983-11-04 |
| PL217817A1 (en) | 1980-06-02 |
| SE7907051L (en) | 1980-02-25 |
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