NO309726B1 - Strong fire retardant material, especially for cable coating - Google Patents
Strong fire retardant material, especially for cable coating Download PDFInfo
- Publication number
- NO309726B1 NO309726B1 NO944612A NO944612A NO309726B1 NO 309726 B1 NO309726 B1 NO 309726B1 NO 944612 A NO944612 A NO 944612A NO 944612 A NO944612 A NO 944612A NO 309726 B1 NO309726 B1 NO 309726B1
- Authority
- NO
- Norway
- Prior art keywords
- ethylene
- copolymer
- parts
- vinyl acetate
- fire
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims description 36
- 239000003063 flame retardant Substances 0.000 title claims description 16
- 239000011248 coating agent Substances 0.000 title description 2
- 238000000576 coating method Methods 0.000 title description 2
- 229920001577 copolymer Polymers 0.000 claims description 17
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 14
- 239000005977 Ethylene Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 10
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 9
- 229910000077 silane Inorganic materials 0.000 claims description 9
- 229910052736 halogen Inorganic materials 0.000 claims description 6
- 150000002367 halogens Chemical class 0.000 claims description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 5
- RREGISFBPQOLTM-UHFFFAOYSA-N alumane;trihydrate Chemical group O.O.O.[AlH3] RREGISFBPQOLTM-UHFFFAOYSA-N 0.000 claims description 5
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical group CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 description 13
- 239000004020 conductor Substances 0.000 description 9
- 239000010410 layer Substances 0.000 description 5
- 150000001993 dienes Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000012815 thermoplastic material Substances 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L31/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid; Compositions of derivatives of such polymers
- C08L31/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C08L31/04—Homopolymers or copolymers of vinyl acetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
-
- 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
- C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
Landscapes
- 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)
- Insulated Conductors (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
- Paints Or Removers (AREA)
- Fireproofing Substances (AREA)
Description
Foreliggende oppfinnelse angår et sterkt brannhemmende material uten halogen og lett avrivbart samt med en meget god bøyelighet ved lav temperatur, særlig for kabelovertrekk. The present invention relates to a strong fire-retardant material without halogen and easily tearable and with very good flexibility at low temperature, especially for cable covering.
Et sådant material anvendes typisk for å danne et overtrekk på kabelen og spesielt et mellomlag i kabelkledningen. Dette mellomlag anbringes mellom en mekanisk beskytt-else og en sammenstilling av ledere, hvor hver leder eventuelt allerede er isolert med et eget overtrekk. Man kan påføre et sådant mellomlag langs kabellederen eller -lederne ved hjelp av en kontinuerlig ekstruderingsprosess. Ved visse anvendelser ønsker man at materialene på en kabel skal være i høy grad brannhemmende, ikke inneholde halogen, og at materialet i mellomsjiktet lett skal kunne bøyes for å lette kabeltilkobling-en. For visse anvendelser ønsker man forøvrig at dette material skal være bøyelig ved lav temperatur for å kunne installere kabelen på steder hvor det er liten plass eller hvor den plass som opptas, bør være så liten som mulig. Such a material is typically used to form a covering on the cable and in particular an intermediate layer in the cable sheath. This intermediate layer is placed between a mechanical protection and an assembly of conductors, where each conductor is possibly already insulated with a separate covering. Such an intermediate layer can be applied along the cable conductor or conductors by means of a continuous extrusion process. In certain applications, it is desired that the materials on a cable should be highly fire-retardant, not contain halogen, and that the material in the middle layer should be able to be easily bent to facilitate the cable connection. For certain applications, you also want this material to be flexible at low temperature in order to be able to install the cable in places where there is little space or where the space taken up should be as small as possible.
Det er tidligere kjent termoplastmaterialer som er meget brannhemmende og ikke inneholder halogen, men disse oppviser en sterk motstand mot avrivning ved omgivelsestemperatur. Opprivningen i lengderetningen kan lettes ved hjelp av en opprivningstråd som er anbragt under mellomsjiktet. Likevel er det iblant nødvendig å kutte opp overtrekket i lengderetningen ved hjelp av et skarpt verktøy. I alle tilfeller er det nødvendig å utføre en sirkulær oppskjæring for avisolering av det parti av overtrekket som skal fjernes, i forhold til de overtrekk som skal forbli uberørt omkring kabellederen eller -lederne. Utførelse av en oppskjæring i lengderetningen eller utførelse av et sirkelformet snitt ved hjelp av et skarpt verktøy medfører alltid risiko for å skade overtrekket på de enkelte ledere, eller også å skade den eller de ledere som befinner seg i kabelen. There are previously known thermoplastic materials which are highly fire retardant and do not contain halogen, but these exhibit a strong resistance to tearing at ambient temperature. The tearing in the longitudinal direction can be facilitated by means of a tearing thread which is placed under the middle layer. Nevertheless, it is sometimes necessary to cut the cover lengthwise using a sharp tool. In all cases, it is necessary to carry out a circular cut to strip the insulation of the part of the covering that is to be removed, in relation to the coverings that must remain untouched around the cable conductor or conductors. Making a longitudinal cut or making a circular cut using a sharp tool always entails a risk of damaging the coating on the individual conductors, or of damaging the conductor(s) in the cable.
Det er derfor et formål for oppfinnelsen å komme frem til et overtrekksmaterial som lett kan avrives ved vanlig omgivelsestemperatur, uten at det er nødvendig å anvende et skarpt verktøy, samtidig som materialet oppviser en sterk brannhemning, fravær av halogen og en meget god bøyelighet ved lav temperatur. It is therefore an object of the invention to arrive at a covering material which can be easily peeled off at normal ambient temperature, without the need to use a sharp tool, while the material exhibits strong fire retardancy, the absence of halogen and a very good flexibility at low temperature.
Oppfinnelsen gjelder således et sterkt brannhemmende material uten halogen og lett avrivbart samt med en meget god bøyelighet ved lav temperatur, særlig for kabelovertrekk, idet materialet har følgende sammensetning uttrykt i antall andeler pr. 100 deler av den nedenfor angitte polymersammensetning: The invention thus relates to a strong fire-retardant material without halogen and easily tearable and with very good flexibility at low temperature, especially for cable covering, as the material has the following composition expressed in the number of parts per 100 parts of the polymer composition indicated below:
- 50 til 70 deler av en første kopolymer av etylen og vinylacetat, og som inneholder 40 til 50 % acetat, - 20 til 40 deler av en andre kopolymer av etylen og vinylacetat, og som inneholder 30 til 50 % acetat, og - 10 til 20 deler av en tredje kopolymer av etylen og propylen, og som inneholder mellom 60 og 75 % etylen. - 50 to 70 parts of a first copolymer of ethylene and vinyl acetate, and containing 40 to 50% acetate, - 20 to 40 parts of a second copolymer of ethylene and vinyl acetate, and containing 30 to 50% acetate, and - 10 to 20 parts of a third copolymer of ethylene and propylene, and which contains between 60 and 75% ethylene.
På denne bakgrunn av prinsipielt kjent teknikk har da det sterkt brannhemmende material i henhold til oppfinnelsen som særtrekk at et silan er podet på den andre kopolymer av etylen og vinylacetat, mens materialet også inneholder et brannhemmende middel i en mengdeandel valgt slik at materialets brannhemningsgrad er bedre enn 40 %. Based on this background of known technology in principle, the highly fire-retardant material according to the invention has as a distinctive feature that a silane is grafted onto the second copolymer of ethylene and vinyl acetate, while the material also contains a fire-retardant agent in a proportion chosen so that the material's fire-retardant degree is better than 40%.
I henhold til oppfinnelsen har silanet fortrinnsvis en slik podingsgrad at flytbarhetsverdien av det oppnådde material ligger mellom 1 og 10 g for 10 minutter ved 190°C, under en vekt på 5 kg og under de forhold som er fastlagt ved prøvenormen ISO 1133. According to the invention, the silane preferably has such a degree of grafting that the flowability value of the material obtained is between 1 and 10 g for 10 minutes at 190°C, under a weight of 5 kg and under the conditions determined by the test standard ISO 1133.
I en utførelse av oppfinnelsen fortrekkes det at silanet er trimetoksy-vinylsilan. Videre fortrekkes det at det brannhemmende middel er aluminiumtrihydrat, og at dette aluminiumtrihydrat har en spesifikk overflate på mellom 3 og 8 m<2>/g. In one embodiment of the invention, it is preferred that the silane is trimethoxy-vinyl silane. Furthermore, it is preferred that the fire retardant is aluminum trihydrate, and that this aluminum trihydrate has a specific surface of between 3 and 8 m<2>/g.
Den andre kopolymer av etylen og vinylacetat er med fordel podet med trimetoksy-vinylsilan i en slik mengdeandel at flytbarhetsverdien av det oppnådde material ligger mellom 1 og 10 g for 10 minutter ved 190°C, samt under en vekt på 5 kg og under de forhold som er fastlagt ved prøvenormen ISO 1133. The second copolymer of ethylene and vinyl acetate is advantageously grafted with trimethoxy-vinylsilane in such a proportion that the flowability value of the material obtained is between 1 and 10 g for 10 minutes at 190°C, and under a weight of 5 kg and under the conditions which is determined by the test standard ISO 1133.
Tabellen nedenfor gir et eksempel på en materialsammensetning i henhold til oppfinnelsen, uttrykt i antall andeler pr. 100 deler av polymersammensetningen nedenfor: The table below gives an example of a material composition according to the invention, expressed in the number of parts per 100 parts of the polymer composition below:
I dette material gir blandingen av de tre kopolymerer en utmerket bøyelighet ved lav temperatur. In this material, the mixture of the three copolymers gives excellent flexibility at low temperature.
Poding av funksjonelt silan på den andre kopolymer av etylen og vinylacetat samt med 27 % acetat gir god mekanisk styrke og en avrivbarhet i lengderetningen som samtidig er lett og regulerbar. For å fraskille en del av overtrekket på en kabel fra resten av kabelen er det da ikke nødvendig å utføre et gjennomgående kutt, men tilstrekkelig å utføre et svakt innsnitt. Man reduserer således risikoen for med et skjærende verktøy å skade de enkelte beleggsjikt som eventuelt skal forbli på kabelen for å beskytte lederne i kabelen. I dette sammensetningseksempel er det funksjonelle silan som anvendes for å pode kopolymeren av etylen og vinylacetat, trimetoksy-vinylsilan i en slik mengdeandel at det oppnådde materials flytbarhetsverdi kommer til å ligge mellom 1 og 10 g for 10 minutter ved 190°C og under en vekt på 5 kg, under de betingelser som er fastlagt av normen ISO 1133. Grafting of functional silane on the second copolymer of ethylene and vinyl acetate and with 27% acetate gives good mechanical strength and tearability in the longitudinal direction which is at the same time light and adjustable. In order to separate part of the covering on a cable from the rest of the cable, it is not necessary to make a through cut, but it is sufficient to make a slight incision. You thus reduce the risk of using a cutting tool to damage the individual coating layers that may remain on the cable to protect the conductors in the cable. In this composition example, the functional silane used to graft the copolymer of ethylene and vinyl acetate is trimethoxy-vinyl silane in such a proportion that the fluidity value of the material obtained will be between 1 and 10 g for 10 minutes at 190°C and under a weight of 5 kg, under the conditions laid down by the standard ISO 1133.
I andre utførelseseksempler kan denne kopolymer være podet med et hvilket som helst annet funksjonelt silan og med en slik podingsgrad at flytbarhetsverdien for det oppnådde material ligger i nærheten av de 1 til 10 g som er nevnt ovenfor. In other embodiments, this copolymer can be grafted with any other functional silane and with such a degree of grafting that the flowability value of the material obtained is close to the 1 to 10 g mentioned above.
Kopolymeren etylen-propylen-dien kan omfatte omkring 5 % av et dien, slik det er blitt vanlig ved en slik sammensetning, men dette dien har ingen merkbar virkning på materialets egenskaper. Det kan således utelates. En etylen-propylen-kopolymer, med eller uten dien, bidrar til materialets bøybarhet ved lav temperatur og til absorpsjon av det brannhemmende middel. The copolymer ethylene-propylene-diene may comprise about 5% of a diene, as has become common with such a composition, but this diene has no noticeable effect on the material's properties. It can thus be omitted. An ethylene-propylene copolymer, with or without the diene, contributes to the low temperature bendability of the material and to the absorption of the fire retardant.
Det anvendte brannhemmende middel i dette sammensetningseksempel er et helt vanlig middel, nemlig aluminiumtrihydrat. Men dette middel kan erstattes av et annet vanlig brannhemmende middel, i en mengde tilpasset den brannhemmende virkning som ønskes oppnådd samt den spesifikk overflate av det anvendte middel. Den mengdeandel av vedkommende middel som vil være nødvendig, er sterkt avhengig av hvilken type middel som faktisk benyttes. The fire retardant used in this composition example is a completely common agent, namely aluminum trihydrate. But this agent can be replaced by another common fire-retardant agent, in an amount adapted to the fire-retardant effect that is desired to be achieved as well as the specific surface of the agent used. The amount of the agent in question that will be necessary is highly dependent on the type of agent that is actually used.
Dette sammensetningseksempel omfatter forøvrig et bearbeidingsmiddel som er beregn-et på å lette ekstruderingen av materialet som skal påføres kabelen. Dette bearbeidingsmiddel er f.eks. en polyetylen-voks, men et hvilket som helst annet middel for å lette bearbeidingen kan anvendes. En fagmann vil velge mengdeandelen av dette middel i samsvar med dets art og hvilken grad av lett bearbeidbarhet som er ønskelig. Mengdeandelen av dette middel kan variere fra 1 til 10 deler pr. 100 deler kopolymermaterial, avhengig av de foreliggende forhold. Alt etter den foreliggende mengdeandel vil dette bearbeidingsmiddel ikke påvirke materialegenskapene i det hele tatt, eller bare i liten grad, med hensyn til brannbestandighet, avrivbarhet og materialets bøyelighet. This composition example also includes a processing agent which is calculated to facilitate the extrusion of the material to be applied to the cable. This processing agent is e.g. a polyethylene wax, but any other agent to facilitate processing may be used. A person skilled in the art will choose the proportion of this agent in accordance with its nature and the degree of ease of workability desired. The amount of this agent can vary from 1 to 10 parts per 100 parts copolymer material, depending on the conditions present. Depending on the quantity present, this processing agent will not affect the material properties at all, or only to a small extent, with regard to fire resistance, tearability and the material's flexibility.
Dette sammensetningseksempel gjør det mulig å oppnå et kabelovertrekksmaterial til en pris som er meget lavere enn ved de kjente sammensetninger, samtidig som de industri-elle fremstillingsomkostninger er de samme. Dette sammensetningseksempel oppviser dessuten en bedre brannhemning og en bedre avrivbarhet, slik det vil fremgå av den etterfølgende tabell: This composition example makes it possible to obtain a cable covering material at a price that is much lower than with the known compositions, while the industrial manufacturing costs are the same. This composition example also exhibits a better fire retardancy and a better tearability, as will be seen from the following table:
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9314543A FR2713232B1 (en) | 1993-12-03 | 1993-12-03 | Highly flame retardant and halogen-free material, easily tearable and having very good flexibility at low temperatures, especially for cable coating. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO944612D0 NO944612D0 (en) | 1994-12-01 |
| NO944612L NO944612L (en) | 1995-06-06 |
| NO309726B1 true NO309726B1 (en) | 2001-03-19 |
Family
ID=9453550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO944612A NO309726B1 (en) | 1993-12-03 | 1994-12-01 | Strong fire retardant material, especially for cable coating |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0656390B1 (en) |
| DE (1) | DE69433756T2 (en) |
| FR (1) | FR2713232B1 (en) |
| NO (1) | NO309726B1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6034176A (en) * | 1998-03-31 | 2000-03-07 | Teknor Apex Company | Polymer compositions |
| FR2808527B1 (en) | 2000-05-05 | 2005-11-11 | Cit Alcatel | COMPOSITION WITH IMPROVED THERMOMECHANICAL PROPERTIES AND METHOD FOR ITS CROSS-LINKING |
| CA2712555C (en) | 2008-01-30 | 2016-03-29 | Dow Global Technologies Inc. | Thermoplastic halogen-free flame retardant formulations |
| WO2010063149A1 (en) | 2008-12-05 | 2010-06-10 | Lanxess Deutschland Gmbh | SILANE-GRAFTED α-OLEFIN-VINYL ACETATE COPOLYMER CONTAINING CROSSLINKABLE SILYL GROUPS, PROCESS FOR THE PREPARATION THEREOF AND USE FOR THE PREPARATION OF INSULATION OR SHEATH MATERIALS FOR CABLES OR LINES |
| CN103351520B (en) * | 2013-06-19 | 2016-01-20 | 安徽电缆股份有限公司 | A kind of high cold-resistant insulation CABLE MATERIALS and preparation method thereof |
| CN105482234B (en) * | 2015-12-14 | 2018-07-17 | 湖南工业大学 | A kind of low smoke and zero halogen high-strength polyolefin CABLE MATERIALS and preparation method |
| CN105482462B (en) * | 2015-12-14 | 2019-04-09 | 湖南工业大学 | A kind of high temperature resistant electric cable material with low smoke and halogen free and preparation method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5464545A (en) * | 1977-11-01 | 1979-05-24 | Sumitomo Bakelite Co Ltd | Olefin resin composition |
| FR2538401B1 (en) * | 1982-12-28 | 1986-07-11 | Telecommunications Sa | PROCESS FOR PRODUCING FLAME RETARDANT THERMOPLASTIC MIXTURES AND ITS APPLICATION TO ELECTRIC CABLES |
| JPS59127725A (en) * | 1983-01-12 | 1984-07-23 | Asahi Chem Ind Co Ltd | Laterally easily tearable inflation film |
| JPS6212005A (en) * | 1985-07-10 | 1987-01-21 | 日立電線株式会社 | Flame resisting electric insulator compositioin |
| DE3605848A1 (en) * | 1986-02-22 | 1987-08-27 | Standard Elektrik Lorenz Ag | Thermoplastic polymer mixture |
| DE3904790A1 (en) * | 1989-02-17 | 1990-08-23 | Standard Elektrik Lorenz Ag | POLYMER BLEND |
| JPH04335055A (en) * | 1991-05-09 | 1992-11-24 | Sumitomo Electric Ind Ltd | Production of water-crosslinked resin molding |
-
1993
- 1993-12-03 FR FR9314543A patent/FR2713232B1/en not_active Expired - Fee Related
-
1994
- 1994-11-30 EP EP94402742A patent/EP0656390B1/en not_active Expired - Lifetime
- 1994-11-30 DE DE69433756T patent/DE69433756T2/en not_active Expired - Fee Related
- 1994-12-01 NO NO944612A patent/NO309726B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0656390A1 (en) | 1995-06-07 |
| NO944612L (en) | 1995-06-06 |
| DE69433756T2 (en) | 2004-09-30 |
| FR2713232A1 (en) | 1995-06-09 |
| EP0656390B1 (en) | 2004-05-06 |
| NO944612D0 (en) | 1994-12-01 |
| FR2713232B1 (en) | 1997-06-20 |
| DE69433756D1 (en) | 2004-06-09 |
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