NO844852L - INSULATION MATERIALS - Google Patents
INSULATION MATERIALSInfo
- Publication number
- NO844852L NO844852L NO844852A NO844852A NO844852L NO 844852 L NO844852 L NO 844852L NO 844852 A NO844852 A NO 844852A NO 844852 A NO844852 A NO 844852A NO 844852 L NO844852 L NO 844852L
- Authority
- NO
- Norway
- Prior art keywords
- vinyl acetate
- cross
- weight
- ethylene
- ethylene vinyl
- Prior art date
Links
- 239000012774 insulation material Substances 0.000 title 1
- 229920002959 polymer blend Polymers 0.000 claims description 11
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 9
- 229910000077 silane Inorganic materials 0.000 claims description 9
- 238000004132 cross linking Methods 0.000 claims description 8
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 claims description 7
- 239000003054 catalyst Substances 0.000 claims description 7
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 4
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 4
- QYMGIIIPAFAFRX-UHFFFAOYSA-N butyl prop-2-enoate;ethene Chemical compound C=C.CCCCOC(=O)C=C QYMGIIIPAFAFRX-UHFFFAOYSA-N 0.000 claims description 4
- 229920006245 ethylene-butyl acrylate Polymers 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 1
- 229920000578 graft copolymer Polymers 0.000 claims 1
- 239000000463 material Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000011243 crosslinked material Substances 0.000 description 1
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 1
- 235000012438 extruded product Nutrition 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
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
- H01B3/44—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
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
- Glass Compositions (AREA)
- Organic Insulating Materials (AREA)
Description
Foreliggende oppfinnelse angår en polymerblanding som er tverrbindbar med silan, og særlig en polymerblanding av denne type egnet for ommantling av elektriske og/eller optiske kabler og tråder, hvilken polymerblanding inneholder kopolymerer av etylenvinylacetat og etylenbutylakrylat med organisk silan podet derpå for tverrbindingsprosessen, en tverrbindingskatalysator samt et f iamiriehemmende f yl Ima ter ia le . Polymerblandinger av den ovennevnte type er kommersielt tilgjengelige for bruk til ommantling av kabler og tråder. Når en katalysator tilsettes, blir de hovedsakelig bearbeidet ved ekstrudering, og under ekstru-deringen vil materialene på grunn av påvirkning av fuktigheten til den omgivende atmosfære og på grunn av den podede silan, gjennomløpe en silantverrbinding eller vulkanisering. Som katalysator benyttes f.eks. dibutyl-tinn, dilaurat i form av en 10% batch basert på etylenvinylacetat (EVA). Silantverrbindingen kan akselleres ved å dykke det ekstruderte produktet ned i varmt vann eller utsette det for vanndamp. Det tverrbundne produktet oppviser en forlengelse ved brudd på ca. 130% og en oksygenindeks på 29%. Med henblikk på enkelte praktiske anvendelser av materialet vil det ikke være tilstrekkelig flammebestandig, noe som indikeres av den relativt lave oksygenindeks. Med dette materialet er det ikke mulig å øke de flammebestandige egenskaper ved å tilsette ytterligere aluminiumshydroksyd. Dessuten vil materialet ved enkelte anvendelser ha for liten fleksibilitet. The present invention relates to a polymer mixture which can be cross-linked with silane, and in particular a polymer mixture of this type suitable for sheathing electrical and/or optical cables and wires, which polymer mixture contains copolymers of ethylene vinyl acetate and ethylene butyl acrylate with organic silane grafted thereon for the cross-linking process, a cross-linking catalyst and a f iamirie-inhibiting f yl Ima ter ia le . Polymer mixtures of the above type are commercially available for use in sheathing cables and wires. When a catalyst is added, they are mainly processed by extrusion, and during the extrusion the materials, due to the influence of the humidity of the surrounding atmosphere and due to the grafted silane, will undergo a silane cross-linking or vulcanization. As a catalyst, e.g. dibutyl tin, dilaurate in the form of a 10% batch based on ethylene vinyl acetate (EVA). The silane cross-linking can be accelerated by immersing the extruded product in hot water or exposing it to steam. The cross-linked product exhibits an elongation at break of approx. 130% and an oxygen index of 29%. With a view to certain practical applications of the material, it will not be sufficiently flame resistant, which is indicated by the relatively low oxygen index. With this material, it is not possible to increase the flame-resistant properties by adding additional aluminum hydroxide. In addition, the material will have too little flexibility in some applications.
Formålet med foreliggende oppfinnelse er å modifisere den ovennevnte polymerblanding på en slik måte at det tverrbundne produkt oppviser en vesentlig bedret flammebestandighet samt større fleksibilitet. Dette oppnås ved å benytte de forholds-regler som er tatt i karakteristikken til krav 1 nedenfor. The purpose of the present invention is to modify the above-mentioned polymer mixture in such a way that the cross-linked product exhibits significantly improved flame resistance as well as greater flexibility. This is achieved by using the precautions taken in the characteristics of claim 1 below.
Andre fordelaktige utførelser er omtalt i underkravene.Other advantageous embodiments are discussed in the subclaims.
Ved å kombinere den ovennevnte polymerblanding med en etylenvinylacetat-kopolymer med et vinylacetatinnhold på 50%, oppnås at blandingen kan oppta en betydelig mengde aluminiumhydroksyd, og derved forbedres flammebestandigheten til sluttproduktet. Samtidig viser det seg at sluttproduktet har en betydelig høyere fleksibilitet enn den ovennevnte polymerblanding. Til tross for denne modifikasjonen kan blandingen tverrbindes på samme måte som de konvensjonelle typer av polymerblandinger som er tverrbindbare med silan. Sluttproduktet viser seg å ha en forlengelse ved brudd på 150%, og etterkommer derfor i større grad kravene til VDE 0207, pkt. 27 enn utgangsblandingen. Oksygenindeksen beløper seg nå til ca. 4 0%, noe som medfører at de flammehemmende egenskaper er blitt betydelig bedret. Derfor blir det også ved tynne kabler mulig å etterkomme kravene til flammebestandighet i henhold til VDE 0472, pkt. 804, metode C. Til tross for den høyere fyllgraden er det modifiserte materiale mer fleksibelt enn det ovennevnte silantverrbundne materialet. By combining the above polymer mixture with an ethylene vinyl acetate copolymer with a vinyl acetate content of 50%, it is achieved that the mixture can absorb a significant amount of aluminum hydroxide, thereby improving the flame resistance of the final product. At the same time, it turns out that the final product has a significantly higher flexibility than the above-mentioned polymer mixture. Despite this modification, the composition can be cross-linked in the same way as the conventional types of polymer compositions cross-linkable with silane. The end product turns out to have an elongation at break of 150%, and therefore complies to a greater extent with the requirements of VDE 0207, point 27 than the starting mixture. The oxygen index now amounts to approx. 4 0%, which means that the flame retardant properties have been significantly improved. Therefore, even with thin cables, it becomes possible to comply with the requirements for flame resistance according to VDE 0472, item 804, method C. Despite the higher degree of filling, the modified material is more flexible than the above-mentioned silane cross-linked material.
Den tverrbindbare polymerblanding i henhold til foreliggende oppfinnelse har en sammensetning innenfor områdene som er spesi-fisert nedenfor, hvor etylenvinylacetat er betegnet som EVA, og hvor vinylacetat er betegnet som VA: The crosslinkable polymer mixture according to the present invention has a composition within the ranges specified below, where ethylene vinyl acetate is denoted as EVA, and where vinyl acetate is denoted as VA:
Den foretrukne blanding består av følgende komponenter: The preferred mixture consists of the following components:
Den tverrbundne isolasjonsmasse har følgende egenskaper: The cross-linked insulating material has the following properties:
Tverrbindingstiden for ekstrudat av ca. 1 mm tykkelse er ca. 3 timer i varmtvannsbad ved 7 0°C ved tilsetting av de vanlige katalysatorer på 3% som batch. The cross-linking time for extrudate of approx. 1 mm thickness is approx. 3 hours in a hot water bath at 70°C by adding the usual catalysts at 3% as a batch.
Claims (3)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833344588 DE3344588C2 (en) | 1983-12-09 | 1983-12-09 | Polymer mixture for sheathing cables and wires |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO844852L true NO844852L (en) | 1985-06-10 |
Family
ID=6216513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO844852A NO844852L (en) | 1983-12-09 | 1984-12-05 | INSULATION MATERIALS |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0148416A3 (en) |
| AU (1) | AU578256B2 (en) |
| BE (1) | BE903192A (en) |
| DE (1) | DE3344588C2 (en) |
| FR (1) | FR2556356B1 (en) |
| GB (1) | GB2151236B (en) |
| NO (1) | NO844852L (en) |
| NZ (1) | NZ210343A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8502928D0 (en) * | 1985-02-05 | 1985-03-06 | Bicc Plc | Cross-linkable compositions |
| US4732939A (en) * | 1986-01-20 | 1988-03-22 | Sumitomo Bakelite Company Limited | Flame-retardant olefinic resin compositions |
| ATE86273T1 (en) * | 1987-03-02 | 1993-03-15 | Sumitomo Bakelite Co | FLAME RETARDANT OLEFIN RESIN COMPOUND. |
| DE3921442C2 (en) * | 1989-06-30 | 1995-06-01 | Kabelmetal Electro Gmbh | Empty cable for fiber optic cables |
| DE10248174C1 (en) | 2002-10-16 | 2003-11-13 | Nabaltec Gmbh | Flame-retardant thermoplastic, thermoset or thermosetting and/or elastomeric polymer composition, for producing coated electrical wire or cable by extrusion, contains aluminum hydroxide with specified properties as flame retardant |
| DE10342728B3 (en) * | 2003-09-16 | 2005-08-18 | Raumedic Ag | Filling tube, useful for filling medical products, e.g. blood into bags, comprises outer layer of polypropylene and inner layer of silane-crosslinked ethylene copolymer |
| CN103497411B (en) * | 2013-09-27 | 2016-04-13 | 杭州师范大学 | A kind of flexible high heat conductive insulating polymer composite and preparation method thereof |
| WO2019115723A1 (en) | 2017-12-15 | 2019-06-20 | Byk-Chemie Gmbh | Thermoplastic composition having improved flame retardant properties |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS518355A (en) * | 1974-07-11 | 1976-01-23 | Showa Electric Wire & Cable Co | KAKYOSEISOSEIBUTSU |
| IE51762B1 (en) * | 1980-09-09 | 1987-03-18 | Nat Distillers Chem Corp | Flame retardant ethylene-ester copolymer hydrated filler compositions |
| US4349605A (en) * | 1980-09-09 | 1982-09-14 | National Distillers & Chemical Corp. | Flame retardant radiation curable polymeric compositions |
| DE3047269C2 (en) * | 1980-12-16 | 1983-08-04 | AEG-Telefunken Kabelwerke AG, Rheydt, 4050 Mönchengladbach | "Thermoplastic Polymer Mixture" |
| JPS58118828A (en) * | 1982-01-06 | 1983-07-15 | Showa Electric Wire & Cable Co Ltd | Preparation of flame-retardant crosslinked polyolefin molding |
| CA1221188A (en) * | 1982-04-26 | 1987-04-28 | James W. Biggs | Flame retardant crosslinked ethylene copolymer electrical insulation |
| GB2149802B (en) * | 1983-11-16 | 1987-03-18 | Standard Telephones Cables Ltd | Oil resistant flame retardent ethylene polymer compositions |
-
1983
- 1983-12-09 DE DE19833344588 patent/DE3344588C2/en not_active Expired - Fee Related
-
1984
- 1984-11-23 GB GB08429596A patent/GB2151236B/en not_active Expired
- 1984-11-26 AU AU35861/84A patent/AU578256B2/en not_active Ceased
- 1984-11-27 NZ NZ21034384A patent/NZ210343A/en unknown
- 1984-12-04 EP EP84114762A patent/EP0148416A3/en not_active Withdrawn
- 1984-12-05 NO NO844852A patent/NO844852L/en unknown
- 1984-12-07 FR FR8418746A patent/FR2556356B1/en not_active Expired
-
1985
- 1985-09-06 BE BE2/60787A patent/BE903192A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NZ210343A (en) | 1988-01-08 |
| GB2151236B (en) | 1987-06-24 |
| AU578256B2 (en) | 1988-10-20 |
| FR2556356B1 (en) | 1986-09-19 |
| FR2556356A1 (en) | 1985-06-14 |
| GB8429596D0 (en) | 1985-01-03 |
| GB2151236A (en) | 1985-07-17 |
| AU3586184A (en) | 1985-06-13 |
| EP0148416A2 (en) | 1985-07-17 |
| DE3344588C2 (en) | 1994-12-15 |
| EP0148416A3 (en) | 1985-08-21 |
| DE3344588A1 (en) | 1985-06-20 |
| BE903192A (en) | 1986-03-06 |
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