WO2009004246A2 - Conducteur electrique isole - Google Patents
Conducteur electrique isole Download PDFInfo
- Publication number
- WO2009004246A2 WO2009004246A2 PCT/FR2008/051084 FR2008051084W WO2009004246A2 WO 2009004246 A2 WO2009004246 A2 WO 2009004246A2 FR 2008051084 W FR2008051084 W FR 2008051084W WO 2009004246 A2 WO2009004246 A2 WO 2009004246A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrical conductor
- polymer
- conductor according
- insulated electrical
- weight
- 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.)
- Ceased
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
- H01B3/44—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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
Definitions
- the present invention relates to an insulated electrical conductor intended primarily to withstand temperatures in the range of -40 ° C.
- Insulating compositions for isolating automotive electrical conductors comprising a blend of polyolefin and paraffin oil having improved cold-holding properties are known.
- liquid quantities injected during the implementation of the composition in an extruder are minimal, of the order of 1 to 2 parts by weight per 100 parts of the polymer of said composition.
- the technical problem to be solved by the object of the present invention is to propose an insulated electrical conductor comprising an electrical conductor surrounded by an extruded insulating layer, said extruded insulating layer making it possible to avoid the problems of the state of the art. in particular by offering improved mechanical properties, especially at temperatures of the order of -40 ° C., and an easily industrializable and inexpensive implementation.
- extruded insulating layer is obtained from a composition comprising a polymer and a fatty acid amide in solid form. Thanks to the invention, the composition can be extruded very easily without making any modifications to a conventional extrusion line.
- said fatty acid amide in solid form is incorporated into the polymer using a simple metering hopper.
- the extruded insulating layer obtained from said composition has optimized mechanical properties, in particular it can withstand temperatures of the order of -40 0 C according to ISO-6722 Part 1 ⁇ 8.1.
- the fatty acid amide may be chosen from the following formulas (I) or (II):
- R 1 and R 4 may be the same or different and represent a linear or branched C 1 -C 24 alkyl group; or a linear or branched C 2 -C 2 4 alkene group; or C 8 -C 20 cycloalkyl;
- R2 is hydrogen; or a linear or branched C 1 -C 4 alkyl group; or a linear or branched C 2 -C 2 4 alkene group; or C 8 -C 20 cycloalkyl
- R 3 is a linear or branched C 1 -C 10 alkyl group.
- fatty acid amides may be selected from the following families: acetamide, propionamide, n-butyramide, n-valeramide, n-caproamide, stearamide, erucamide, lauroylamide, miristic amide, arachidamide, behenamide, oleamide, ethylene bis-stearamide, ethylene-bis-oleamide, and oleyl palmitamide, or mixtures thereof.
- Oleyl palmitamide is particularly preferred.
- the amount of fatty acid amide is at most 5 parts by weight per 100 parts by weight of polymer in the composition, preferably at most 2 parts by weight per 100 parts by weight of polymer in the composition.
- This upper limit of 5 parts by weight makes it possible to limit the risk of migration of the fatty acid amide to the surface of said layer, this migration resulting in bleaching of said surface.
- the fatty acid amide tends to no longer protect, by its intrinsic properties, the entire insulating layer, the latter being easily damaged by its environment.
- the amount of fatty acid amide is at least 0.5 part by weight per 100 parts by weight of polymer in the composition, preferably at least 1 part by weight per 100 parts by weight of polymer in the composition.
- the nature of the polymer of the composition according to the present invention is not limiting.
- polymer may be any type of polymer well known to those skilled in the art capable of being extruded, said polymer may be crosslinkable or not.
- the polymer is grafted silane to be crosslinked by a process well known to those skilled in the art called "silane crosslinking".
- the polymer is a crosslinkable polymer of the thermoplastic or elastomeric type, and may be chosen from at least one olefin homopolymer and at least one olefin copolymer, or a mixture thereof. More particularly, the polymer is advantageously a homopolymer or copolymer of ethylene, a homopolymer or copolymer of propylene, or a mixture thereof.
- the polymer is a mixture of ethylene-octene copolymer (PEO) and propylene copolymer (PP).
- PEO ethylene-octene copolymer
- PP propylene copolymer
- the mixture of PEO and PP may consist of 60 to 80% by weight of PEO and 40 to 20% by weight of PP.
- compositions comprising the 60/40 ratio of PEO / PP are preferred for insulating electrical conductors with a cross-section of 0.35 to 1.5 mm 2 (so-called “rigid” insulating layer) while compositions comprising the ratio 70 PEO / PP are preferred for isolating electrical conductors with a cross section of 1.5 to 7 mm 2 (so-called “flexible” insulating layer).
- the 80/20 ratio of PEO / PP is preferably used to isolate electrical conductors with a section greater than 7 mm 2 (so-called "super-flexible" insulating layer), which can reach 90 mm 2 , or even 150 mm 2 .
- the composition further comprises a flame retardant filler.
- the flame retardant filler may be a metal hydroxide, preferably magnesium dihydroxide (MDH) or aluminum trihydroxide (ATH).
- MDH magnesium dihydroxide
- ATH aluminum trihydroxide
- the composition further comprises at least one protective agent chosen from antioxidants and metal deactivators, the metal deactivators making it possible to limit the catalytic degradation of the insulating layer by the metal of the electrical conductor.
- Antioxidants can typically be thioesters or hindered phenols, while metal deactivators are phenolic compounds well known to those skilled in the art.
- the electrical conductor has a cross section of between 0.35 and 7 mm 2 , preferably between 0.35 and 1 mm 2 .
- extruded insulating layers were prepared from compositions according to the invention and according to prior art to examine their mechanical properties and their “cold forming (-40 0 C) "according to ISO-6722 Part 1 ⁇ 8.1.
- the preparation of the insulating layers, and in particular their crosslinking mode, are given by way of example and are in no way limiting.
- a first step 100 parts by weight of polymer are blended continuously with heating to about 2.5 parts by weight of a silane crosslinking agent (alkoxysilane or carboxysilane) together with an organic peroxide, with the aid of Buss single-screw mixer or twin-screw extruder.
- a silane crosslinking agent alkoxysilane or carboxysilane
- the temperature of the mixture of this first stage is such that it typically makes it possible to use the polymer while decomposing the organic peroxide.
- the polymer is a mixture of 80% by weight of Engage 8450 and 20% by weight of Moplen RP315M.
- Engage 8450 is a copolymer of ethylene-octene (PEO) marketed by Dow Elstomers, while Moplen RP315M is a propylene copolymer (PP) marketed by Basell.
- PEO ethylene-octene
- Moplen RP315M is a propylene copolymer (PP) marketed by Basell.
- This first step makes it possible to obtain a silane-grafted polymer, the silane-grafted polymer typically being obtained in the form of granules.
- silane graft polymer 100 parts by weight of silane graft polymer (granules) were continuously blended and heated to the various amounts of flame retardant fillers, protective agents, paraffin oil or fatty acid amide detailed in Table 1 (Samples A). to C).
- Sunpar 150 is a paraffin oil marketed by Sun OiI.
- Crodamide 203 is a solid fatty acid amide of the oleyl palmitamide type, marketed by Croda France.
- the flame retardant charge is ATH marketed by Albermarle.
- the protective agent may be the combination of at least one antioxidant such as Irganox 1010 and / or Irganox PS 802, and at least one metal deactivator such as Irganox 1024 and / or Naugard XL1 the choice of antioxidants and metal deactivators being given by way of example only.
- the mixing of this second step is carried out using another Buss single-screw mixer or another twin-screw extruder.
- the flame retardant fillers, the protective agents and the fatty acid amide are added to the silane graft polymer using a conventional metering hopper.
- the paraffin oil is, for its part, added to the polymer using an injector.
- the temperature of the mixture of this second stage is such that it typically makes it possible to use the granules of silane grafted polymer while avoiding the decomposition of the flame retardant fillers.
- This second step makes it possible to obtain a grafted silane graft polymer, the charged silane graft polymer being typically obtained in the form of granules.
- the granules of charged silane graft polymer are used in a single-screw extruder in the presence of a silanol condensation reaction catalyst.
- the catalyst is typically added to the charged silane graft polymer in the form of a masterbatch based on a polyolefin compatible with said graft polymer.
- the masterbatch containing said catalyst is added in an amount of about 2% by weight to the loaded silane graft polymer.
- the mixture of the silane graft charged polymer and the silanol condensation catalyst is extruded, for example on a copper wire (multi-strand) with a section of 1 mm 2 , to a thickness of 0.25 mm, to obtain an insulating layer .
- the insulating layer is crosslinked in the presence of water to obtain an isolated electrical conductor (insulated electrical conductors A to C).
- the crosslinking of the composition may be carried out by photochemical means such as irradiation under beta radiation, or irradiation under ultraviolet radiation in the presence of a photoinitiator.
- photochemical means such as irradiation under beta radiation, or irradiation under ultraviolet radiation in the presence of a photoinitiator.
- Crosslinking in a salt bath or in a vapor tube in the presence of an organic peroxide are two other methods that can also be envisaged.
- the mechanical properties, such as tensile strength and elongation at break, of the insulating layer of the insulated electrical conductors are also determined and collated in Table 2.
- the cold forming according to ISO-6722 Part 1 ⁇ 8.1, consists of winding two insulated electrical conductors with a length of 600 mm to a temperature of -40 ° C. on the same mandrel.
- the electrical conductor of the insulated electrical conductors A and B is clearly visible, while the insulating layer of the insulated electrical conductor C exhibits no external deterioration.
- the fatty acid amide included in the insulating layer of the insulated electrical conductor C thus makes it possible to increase the mobility of the polymer chains in order to optimize the cold resistance (-40 ° C.) of the insulating layer. It is important to note that the elongation at break of the insulating layer of the insulated electrical conductor C is significantly greater than that of the insulating layers of the electrical conductors A and B.
- the present invention is not limited to the example which has just been described and relates in general to all the compositions that can be envisaged from the general indications provided in the disclosure of the invention.
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Insulated Conductors (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP08806019A EP2160738A2 (fr) | 2007-06-20 | 2008-06-18 | Conducteur electrique isole |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0755883 | 2007-06-20 | ||
| FR0755883A FR2917886B1 (fr) | 2007-06-20 | 2007-06-20 | Conducteur electrique isole. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2009004246A2 true WO2009004246A2 (fr) | 2009-01-08 |
| WO2009004246A3 WO2009004246A3 (fr) | 2009-05-14 |
Family
ID=39014899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2008/051084 Ceased WO2009004246A2 (fr) | 2007-06-20 | 2008-06-18 | Conducteur electrique isole |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2160738A2 (fr) |
| KR (1) | KR20100024993A (fr) |
| FR (1) | FR2917886B1 (fr) |
| WO (1) | WO2009004246A2 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014144472A1 (fr) | 2013-03-15 | 2014-09-18 | General Cable Technologies Corporation | Câble à nettoyage simple |
| AU2011238710B2 (en) * | 2010-03-28 | 2015-08-20 | Evestra, Inc. | Intravaginal drug delivery device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3812207A (en) * | 1971-10-22 | 1974-05-21 | Basf Ag | Molding compositions having improved environmental stress-crack resistance and low-temperature impact strength |
| US20060065428A1 (en) * | 2004-07-13 | 2006-03-30 | Kummer Randy D | Electrical cable having a surface with reduced coefficient of friction |
-
2007
- 2007-06-20 FR FR0755883A patent/FR2917886B1/fr not_active Expired - Fee Related
-
2008
- 2008-06-18 EP EP08806019A patent/EP2160738A2/fr not_active Withdrawn
- 2008-06-18 KR KR1020107001159A patent/KR20100024993A/ko not_active Ceased
- 2008-06-18 WO PCT/FR2008/051084 patent/WO2009004246A2/fr not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2011238710B2 (en) * | 2010-03-28 | 2015-08-20 | Evestra, Inc. | Intravaginal drug delivery device |
| WO2014144472A1 (fr) | 2013-03-15 | 2014-09-18 | General Cable Technologies Corporation | Câble à nettoyage simple |
| EP2973608A4 (fr) * | 2013-03-15 | 2016-10-12 | Gen Cable Technologies Corp | Câble à nettoyage simple |
| US11011283B2 (en) | 2013-03-15 | 2021-05-18 | General Cable Technologies Corporation | Easy clean cable |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009004246A3 (fr) | 2009-05-14 |
| FR2917886B1 (fr) | 2009-10-30 |
| KR20100024993A (ko) | 2010-03-08 |
| EP2160738A2 (fr) | 2010-03-10 |
| FR2917886A1 (fr) | 2008-12-26 |
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