EP1570494A1 - Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cable electriques - Google Patents
Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cable electriquesInfo
- Publication number
- EP1570494A1 EP1570494A1 EP03789489A EP03789489A EP1570494A1 EP 1570494 A1 EP1570494 A1 EP 1570494A1 EP 03789489 A EP03789489 A EP 03789489A EP 03789489 A EP03789489 A EP 03789489A EP 1570494 A1 EP1570494 A1 EP 1570494A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parts
- compositions
- cables
- ingredient
- 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.)
- Withdrawn
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
- H01B3/46—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 silicones
-
- 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
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
-
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/14—Peroxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/045—Polysiloxanes containing less than 25 silicon atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/70—Siloxanes defined by use of the MDTQ nomenclature
Definitions
- the present invention relates to hot-vulcanizable polyorganosiloxane compositions in silicone elastomers, that is to say vulcanizable at temperatures of the material generally between 100 ° and 200 ° C and up to 250 ° C if necessary.
- the invention also relates to the use of these compositions for in particular the production of envelopes or primary insulators used in the constitution of electric wires or cables protected against fire.
- the invention relates to fire-protected electrical wires or cables which are produced by the use of such compositions.
- fire-protected electric wires or cables is meant to define electric wires or cables which must guarantee high-quality fire behavior in terms of, at least, cohesion of the ash and opacity of the smoke. .
- the characteristics that fire-protected electrical wires or cables must have are subject to legal regulations in many countries and rigorous standards have been established.
- each cable sample is positioned in a metal tube which itself is then placed in an oven whose temperature reaches 920 ° C in 50 minutes and this temperature is then maintained for 15 minutes; during this test, the cable sample is subjected to regular shocks (by means of a shock bar which taps on the metal tube at the rate of two strokes per minute); the test is successful if control lamps, connected to the cable supplied with a nominal voltage, are not extinguished at the end of the duration of the test (i.e. after 65 minutes).
- IEC International Electrotechnical Commission
- the aforementioned standards can only be satisfied for electrical wires or cables of which at least the primary insulating materials have been particularly studied with regard to their non-propagation of the fire.
- the primary insulating materials based on silicone elastomers obtained by hot vulcanization of suitable polyorganosiloxane compositions can satisfy the flame non-propagation tests.
- the silicone elastomer burns, it transforms into an insulating ashy substance with a certain cohesion and it emits white fumes which come from the auto-ignition of the volatile residues produced by the degradation of the elastomer.
- An electric cable is made up, according to the known prior art, of one or more monoconductor (s) (generally based on Cu or AI); each of these single conductors is protected by a primary envelope or insulator made of one or more concentric layer (s) based on silicone elastomer.
- a primary envelope or insulator made of one or more concentric layer (s) based on silicone elastomer.
- these envelopes in the case of a cable with several single conductors
- one or more filling element (s) and / or one or more reinforcing element (s) may be provided. based in particular on glass fibers and / or mineral fibers.
- the outer sheathing which may include one or more sheath (s).
- the silicone elastomer forming part of the cables is essentially the material constituting the primary insulator (s), it can also be present, in variable proportions: in the possible (s) ) element (s) for filling and / or in the possible element (s) of reinforcement (constituting the common envelope in the case of a cable with several single conductors); and / or in the outer sheath (s).
- the number of concentric layer (s) based on silicone elastomer, constituting the envelope or primary insulator of each single conductor, and the wall thickness of each layer will depend essentially on the requirements imposed for the maintenance of operation according to the provisions of the aforementioned standards. In general, it is desirable to obtain such a functioning by the use of one or two layers each having, suitably, a thickness equal to at least 0.5 mm and, preferably, at least 0 , 8 mm.
- An object of the present invention is therefore the development of hot-vulcanizable polyorganosiloxane compositions made of silicone elastomers which are capable, already when they are used for the sole production of the primary insulator, of imparting behavior to electrical wires and cables. very high quality fire marked, at least, by the achievement of the following points:
- Another object of the present invention is also the development of hot-vulcanizable polyorganosiloxane compositions which, while having improved resistance to combustion, simultaneously have good mechanical properties in the non-annealed state as in the annealed state and , in particular, after an aging of 10 days at 200 ° C operated according to the cable standard category of insulation materials El 2 (in materials in particular: of hardness SHORE A, of breaking strength, of elongation at break, elastic modulus).
- silicones which contain, on the basis of 100 parts by weight of polyorganosiloxane polymer (s) a): from 15 to 100 parts of reinforcing filler (s) b), such as for example a siliceous filler, - from 0, 2 to 8 parts of organic peroxide c), 0.5 to 30 parts of mica d), 0.2 to 10 parts of zinc oxide e), 0 to 15 parts of auxiliary additive (s) ( s) f), from 0.0010 to 0.02 parts of ingredient g) expressed by weight of platinum metal (elementary) (i.e.
- new polyorganosiloxane compositions which can be vulcanized hot into silicone elastomers, which can be used in particular to complete the range of high-performance compositions used in the field of wire manufacturing or electric cables, ie to complete the range of compositions on the one hand having a fire behavior which fully meets the requirements explained above (see page 3, lines 11 to 17) relating to the cohesion of the ashes and the opacity of the fumes, and on the other hand having good mechanical properties for the silicone elastomers formed.
- compositions containing (all the parts are given by weight): 100 parts by weight of polyorganosiloxane polymer (s) a), - 15 to 100 parts of filler (s) of reinforcement b), 0.2 to 8 parts of organic peroxide c), 0.5 to 30 parts of mica d), 0.2 to 10 parts of zinc oxide e), 0 to 15 parts d '' auxiliary additive (s) f), - 0.0005 to 0.02 parts of ingredient g) expressed by weight of platinum metal (elementary) (i.e.
- compositions being characterized in that the packing fillers i) consist maintain in aluminum hydroxide powders AI (OH) 3 surface-treated with an organoalkoxysilane and / or an organosilazane and / or an organosiloxane oligomer carrying OH and / or alkoxy radicals where:
- the organo group represents one or more hydrocarbon radicals chosen from: an alkyl radical, linear or branched, having from 1 to 10 carbon atoms; an alkenyl, linear or branched radiacal, having from 2 to 6 carbon atoms and having one or two ethylenic double bond (s); and / or a phenyl radical;
- the alkoxy group represents one or more alkoxy radicals chosen from alkoxy radicals, linear or branched, having from 1 to 6 carbon atoms.
- the Applicant has discovered that the combination: of at least one stuffing filler i) consisting of an aluminum hydroxide powder AI (OH) 3 treated, with the mineral ingredients in accordance with the teaching of WO-A -01/34705 consisting of a siliceous filler, mica, zinc oxide, platinum (or a compound or a complex containing it), titanium oxide and optionally a wollastonite, leads with a notable reinforcement action in the finished elastomer, which makes it possible in particular in the application of electrical wires or cables, an improved cohesion of the ash and an improved capacity for reducing the opacity of smoke.
- compositions according to the present invention comprise at least one polyorganosiloxane polymer a) containing from 0 to 4%, preferably from 0.01 to 3%, by weight, of vinyl group.
- these polyorganosiloxane polymers a) have viscosities at 25 ° C of between 50,000 and 1,000,000 mPa.s, they are called oils, but their viscosity can be greater than 1,000,000 mPa.s and they are then called gums.
- the polyorganosiloxane polymers can be oils or gums or mixtures.
- These polyorganosiloxane polymers are linear polymers, the diorganopolysiloxane chain of which consists essentially of units of formula R 2 SiO. This chain is blocked at each end by a unit of formula R Si 0.5 and / or a radical of formula OR '.
- R which are identical or different, represent monovalent hydrocarbon radicals such as: alkyl radicals, for example, methyl, ethyl, propyl ,.
- octyl, octadecyl r of aryl radicals for example phenyl, tolyl, xylyl; aralkyl radicals such as for example benzyl, phenylethyl; radicals cycloalkyl and cycloalkenyl such as for example cyclohexyl, cycloheptyl, cyclohexenyl radicals; alkenyl radicals, for example vinyl, allyl radicals; alkaryl radicals, cyanoalkyl radicals such as for example a cyanoethyl radical; haloalkyl, haloalkenyl and haloaryl radicals, such as for example chloromethyl, trifluoro-3,3,3 propyl, chlorophenyl, dibromophenyl, trifluoromethylphenyl radicals; the symbol R 1 represents a hydrogen atom, an alkyl radical having from 1 to 4 carbon atoms, the beta
- At least 60% of the R groups represent methyl radicals.
- the presence, along the diorganopolysiloxane chain, of small amounts of units other than R 2 SiO, for example of units of formula RSiO 1 ⁇ 5 and / or SiO 2 is not however excluded in the proportion of at most 2% ( these% expressing the number of T and / or Q units per 100 silicon atoms).
- oils and gums are sold by the manufacturers of silicone or can be manufactured by operating according to already known techniques.
- the reinforcing filler b) consists of silica, alumina or a mixture of these two species.
- silica we are targeting fillers characterized by a fine particle size often less than or equal to 0.1 ⁇ m and a high ratio of the specific surface to the weight, generally comprised in the range of approximately 50 square meters per gram to more than 300 square meters per gram.
- Silicas of this type are commercially available products and are well known in the art of making silicone rubbers. These silicas can be prepared pyrogenically (so-called combustion or smoke silicas) or by wet processes
- precipitated silicas can be treated or not treated with organosilicon compounds usually used for this use.
- the chemical nature and the preparation process are not important for the purposes of the present invention, provided that the silica is capable of exerting a reinforcing action in the finished elastomer.
- aluminas A 125, CR 125, D 65CR from the company BAIKOWSKI.
- the reinforcing filler used is a combustion silica, taken alone or as a mixture with alumina.
- the organic peroxide constituting the ingredient c) can be any of those which act as vulcanizing agents towards the formulations compositions of silicone elastomers. It can thus be any of the peroxides or peresters which it is known to use with silicone elastomers, for example ditertiobutyl peroxide, benzoyl peroxide, monochlorobenzoyl peroxide, 2 peroxide -4 dichlorobenzoyl, tert-butyl peracetate, dicumyl peroxide, 2,5-dimethylhexane 2,5-diperbenzoate and bis (t-butylperoxy) -2,5 2,5-dimethyl-hexane.
- silicone elastomers for example ditertiobutyl peroxide, benzoyl peroxide, monochlorobenzoyl peroxide, 2 peroxide -4 dichlorobenzoyl, tert-butyl peracetate, dicumyl peroxide
- the choice of peroxide will depend in practice on the process used to harden the elastomer (vulcanization process).
- the peroxide used is then preferably monochlorobenzoyl peroxide and / or 2,4-dichlorobenzoyl peroxide
- the peroxide used is then preferably bis (t-butylperoxy) -2,5 dimethyl-2,5 hexane.
- the mica which constitutes the ingredient d) of the compositions of the present invention can be of muscovite type or of phlogopite type and the size of the mica particles is not especially critical, provided that it is small enough to allow a uniform dispersion. in the ingredients of the composition.
- the mica is preferably brought in the form of pulverized mica or of fairine of mica having particles of dimension less than 100 ⁇ m.
- the zinc oxide which constitutes the ingredient e) of the compositions according to the present invention is a white or slightly yellowish powder.
- Platinum, ingredient g) can be: in the form of metallic platinum (elementary); or in the form in particular of chloroplatinic acid (for example hexachloroplatinic acid H 2 PtCI 6 ); or in the form of complexes of platinum and organic products: such as in particular complexes of platinum and vinylated organosiloxanes (for example the Karstedt complex), complexes such as those of formula (PtCI 2l olefin) 2 and H (PtCI 3 , olefin) where Polefin represents ethylene, propyiene, butylene, cyclohexene or styrene, complexes of platinum chloride and cyclopropane.
- Titanium oxide h) is a white powder.
- the stuffing charge i) consists, as indicated above, in a powder of aluminum hydroxide treated on the surface. Such a charge often has a particle size greater than 0.1 ⁇ m.
- organoakoxysilanes By way of concrete examples of organoakoxysilanes, mention may be made of methyltrimethoxysilane, methyltriethoxysilane, phenyltrimethoxysilane, Pethyltrimethoxys ⁇ ane, n-propyltrimethoxysilane, vinyltrimethoxysilane, vinyltriethyethyletriane silane, 2-methoxyethoxytane) , hexenyltrimethoxysilane, gamma-methacryloxyproyltrimethoxysilane, le. dimethyldimethoxysilane, dimethyldiethoxysilane, diphenyldimethoxysilane, trimethylmethoxysilane, trimethylethoxysilane.
- organosiiazane mention may be made of: hexametyldisilazane or divinyltetramethyldisilazane.
- siloxane oligomers As concrete examples of siloxane oligomers, mention may be made of linear and / or crosslinked oligomers containing R " 3 SiO 0 , 5 , and / or R" 2 SiO units associated in the case of oligomers crosslinked to units R “SiO 1 ⁇ 5 and / or SiO 2 , R" being mainly an alkyl radical, linear or branched, having 1 to 10 carbon atoms, an alkenyl radical, linear or branched, having 2 to 6 carbon atoms and having a or two ethylenic double bond (s), and / or a phenyl radical, at least one of R "representing an OH radical or an alkoxy radical, linear or branched having from 1 to 6 carbon atoms.
- the stuffing charge i) is aluminum trihydroxide treated with an organoalkoxysilane.
- compositions according to the present invention also contain, as an optional ingredient, at least one mineral species j) belonging to the wollastonite group.
- the wollastonite group includes the following mineral species: calcium metasilicate (CaSiO 3 ) or wollastonite; mixed calcium and sodium metasilicate (NaCa 2 HSi 3 O 9 ) or pectolite; and the mixed calcium and manganese metasilicate [CaMn (SiO 3 ) 2 ] or bustamite.
- ingredient j) when one is used, is a wollastonite.
- Wollastonite exists in two forms: wollastonite itself, which chemists refer to as ⁇ -CaSiO 3 , which is commonly found in its natural state; and pseudowollastonite or ⁇ -CaSiO 3 . More preferably, the ⁇ -CaSiO 3 wollastonite is used.
- the mineral species j) belonging to. wollastonite group can be untreated on the surface or treated with an organosilicon compound of the type of those mentioned above with respect to aluminum hydroxide powder.
- compositions according to the present invention may optionally additionally contain one or more additives (s) auxiliary (s) f) such as in particular: at least one product called "antistructure"f1); and or at least one polysiloxane resin f2); and / or at least one stabilizing agent f3); and / or at least one pigment f4) for manufacturing colored wires and cables; and / or at least one boron-based compound f5).
- additives s
- hot vulcanizable compositions are aimed at silicone elastomers which contain, on the basis of 100 parts by weight of polyorganosiloxane polymer (s) a): - from 20 to 50 parts of reinforcing filler (s) b), from 0.5 to 6 parts of organic peroxide c), from 1 to 12 parts of mica d), from 2 to 6 parts of zinc oxide e), from 0 to 12 parts auxiliary additive (s) f), - from 0.0010 to 0.015 parts of ingredient g) expressed by weight of platinum metal (elementary) (i.e.
- compositions which are hot vulcanizable into silicone elastomers which contain, on the basis of 100 parts by weight of polyorganosiloxane polymer (s) a): from 30 to 40 parts of reinforcing filler (s) b), - from 1 to 5 parts of organic peroxide c), from 7 to 12 parts of mica d), from 4 to 6 parts of zinc oxide e), from 5 to 10 parts of auxiliary additive (s) f), from 0.002 to 0.01 parts of ingredient g) expressed by weight of platinum metal (elementary) (i.e.
- the "most preferred" compositions of the invention contain (the sum of the ingredients must be equal in each case to 100% by weight):
- auxiliary additive (s) f) When one or more is used, it (s) is (are) represented more precisely by [per 100 parts by weight of polymer ( s) polyorganosiloxane (s) a)]:
- antistructure 0.1 to 15 parts by weight of a product called "antistructure" f1) based on polydimethylsiloxane oil (s) with a viscosity between 10 and 3000 mPa.s at 25 ° C and blocked at each chain end with hydroxy groups and / or poly (methylvinyl) siloxane oil (s) with a viscosity between 10 and 1000 mPa.s at 25 ° C and blocked at each end of the chain by hydroxy groups ; and or
- polysiloxane resin (s) f2) represented by: so-called MQ resins essentially comprising R '" 3 SiOo ⁇ 5 and SiO 2 units in which R'" represents monovalent hydrocarbon groups optionally halogens having less than 7 carbon atoms, the weight ratio R '" 3 SiOo ⁇ 5 to SiO 2 being between 0.5 / 1 and 1/2/1; M'Q resins essentially comprising HR'" 2 units SiOo ⁇ 5 and SiO 2 in which R '"has the meaning given above, the weight ratio HR'" 2 SiO 0 ⁇ 5 on SiO 2 being between 0.5 / 1 and 10/1; and / or 0.01 to 4 parts of stabilizing agent (s) f3) such as in particular: a metal salt of organic acid, such as an iron or cerium salt, for example iron or cerium octoate (proportions ranging more specifically from 0.01 to 1 part); a cerium oxide, a cerium hydroxide, an iron oxide (proportions ranging more specifically
- compound (s) f5) based on boron, such as boric acid and its derivatives, for example of the alkyl ester type having from 1 to 3 carbon atoms; the total quantity of additive (s), when one or more is used, which must be equal to: 15 parts by weight in the case of the compositions taken in general; 12 parts in the case of so-called “preferred”compositions; and 10 parts in the case of the so-called “most preferred” compositions.
- the various ingredients are intimately mixed by means of devices well known in the silicone elastomer industry, the order of incorporation can be arbitrary.
- the invention in a second object, relates to the use of the polyorganosiloxane compositions which have just been described for the production, in particular, of the envelopes or primary insulators of the single conductors used in the constitution of the electric wires or cables protected against the 'fire.
- the invention in a third object, relates to electric wires or cables which are produced by means of the use of the polyorganosiloxane compositions according to the first object of the invention.
- the deposition of a composition according to the invention around each single conductor can be carried out according to the usual methods, in particular by extrusion methods.
- the deposit thus obtained is then crosslinked by heating to lead to the formation of the primary insulator in silicone elastomer.
- the duration of the heating obviously varies with the temperature of the material and the possible working pressure.
- the temperature of the material is generally in the range of 100 ° C to 200 ° C. It is possible to deposit several layers together using a tandem extrusion equipped for example with a square head or co-extrusion.
- composition according to the invention (all the parts are given by weight): 1 - Preparation:
- a polyorganosiloxane a) which is a polydimethylsiloxane blocked at each of its two ends by a dimethylvinylsiloxy unit, containing 120 ppm of Vi groups, having a viscosity of 20 million mPa ⁇ s at 25 ° C
- 33.39 parts of a polyorganosiloxane a) which is a poly (dimethyl) (methylvinyl) - siloxane blocked at each of its two ends by a trimethylsiloxy unit, containing in the chain 720 ppm of Vi groups, having a viscosity of 20 million mPa.s at 25 ° C;
- platinum metal g provided in the form of a solution in divinyltetramethyldisiloxane of a platinum complex at 10% by weight of platinum bound by divinyltetramethyldisiloxane (karstedt complex); 0.28 parts of calcium oxide f3); - 0.39 parts of iron octoate f3); - 2.76 parts of Ce (OH) 4 f3) and
- filler i) which is aluminum trihydroxide treated with 1% by weight of vinyltri (2-methoxyethoxy) silane, sold by the company NABALTEC under the name Aluminum hydroxide AP 40 VS1 ..
- the mixture obtained above before is then worked on a 2-cylinder mixer and the organic peroxide constituting the catalyst c) is added to it.
- 2.- Characterization . already . kohlmposjtjpn (i) A fraction of the homogeneous mass obtained in the mixer is used to measure the mechanical properties of the silicone elastomer resulting from the hot vulcanization of the polyorganosiloxane composition.
- the fraction of homogeneous mass retained for this purpose is then catalyzed with 0.6 part of bis (t-butylperoxy) -2.5 dimethyl-2.5 hexane per 100 parts of homogeneous mass and vulcanized for 10 minutes at 170 ° C, operating in a suitable mold to obtain plates 2 mm thick. Plates are thus obtained in the non-annealed state (NR). A fraction of the plates is then subjected to a 10-day annealing or aging (R) at 200 ° C.
- Standard samples are then taken from all of these plates and the following properties are measured: Shore A hardness (DSA) according to DIN 53505, breaking strength (R / R) in MPa according to AFNOR NF T 46002 standard, - elongation at break (A / R) in% according to the previous standard, elastic modulus (ME) at 100% in Mpa according to the previous standard.
- DSA Shore A hardness
- R / R breaking strength
- a / R elongation at break
- ME elastic modulus
- the present invention makes it possible: (i) to meet the NF C 32-070 CR1 standard at 500 volts by extending the operating time of the wires or cables by 29% compared to the 65-minute threshold required by the standard ; (ii) meet the standard IEC 61 034, part 1, by improving the percentage of transmitted light by 43% compared to the 60% threshold required by the standard.
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)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0215525 | 2002-12-09 | ||
FR0215525 | 2002-12-09 | ||
PCT/FR2003/003474 WO2004064081A1 (fr) | 2002-12-09 | 2003-11-25 | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cable electriques |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1570494A1 true EP1570494A1 (fr) | 2005-09-07 |
Family
ID=32696202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03789489A Withdrawn EP1570494A1 (fr) | 2002-12-09 | 2003-11-25 | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cable electriques |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1570494A1 (fr) |
KR (1) | KR100694556B1 (fr) |
CN (1) | CN100351954C (fr) |
AU (1) | AU2003294073A1 (fr) |
WO (1) | WO2004064081A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2899905B1 (fr) | 2006-04-12 | 2008-07-18 | Rhodia Recherches & Tech | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques |
CN100400570C (zh) * | 2006-06-01 | 2008-07-09 | 浙江新安化工集团股份有限公司 | 一种可作为混炼型硅橡胶结构化控制剂的低聚硅氧烷聚合物 |
CN100457829C (zh) * | 2006-07-11 | 2009-02-04 | 上海统帅有机硅材料有限公司 | 一种液体阻燃硅橡胶及其制备工艺 |
FR2910013A1 (fr) * | 2006-12-14 | 2008-06-20 | Rhodia Recherches & Tech | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques |
EP3013893A1 (fr) | 2013-06-27 | 2016-05-04 | Bluestar Silicones France SAS | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques |
CN107674423A (zh) * | 2017-10-30 | 2018-02-09 | 安徽嘉中金属材料有限公司 | 一种高性能建筑工程用电缆护套材料及其制备方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2689281B2 (ja) * | 1990-07-26 | 1997-12-10 | 日本碍子株式会社 | 屋外で使用する碍子用シリコーンゴム組成物 |
US5668205A (en) * | 1994-05-27 | 1997-09-16 | Shin-Etsu Chemical Co., Ltd. | Silicone rubber compositions for high-voltage electrical insulators |
JP3406776B2 (ja) * | 1996-05-24 | 2003-05-12 | 東レ・ダウコーニング・シリコーン株式会社 | 電気絶縁材料用シリコーンゴム組成物 |
EP1079398B1 (fr) * | 1999-08-18 | 2010-04-21 | Shin-Etsu Chemical Co., Ltd. | Compositions de caoutchouc de silicone, préparation et utilisation comme materiau d'isolation électrique pour la haute tension |
FR2800742B1 (fr) * | 1999-11-09 | 2001-12-21 | Rhodia Chimie Sa | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques |
FR2800743B1 (fr) * | 1999-11-09 | 2002-12-06 | Rhodia Chimie Sa | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques |
-
2003
- 2003-11-25 CN CNB2003801085416A patent/CN100351954C/zh not_active Expired - Fee Related
- 2003-11-25 EP EP03789489A patent/EP1570494A1/fr not_active Withdrawn
- 2003-11-25 AU AU2003294073A patent/AU2003294073A1/en not_active Abandoned
- 2003-11-25 WO PCT/FR2003/003474 patent/WO2004064081A1/fr not_active Application Discontinuation
- 2003-11-25 KR KR1020057010438A patent/KR100694556B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2004064081A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004064081A1 (fr) | 2004-07-29 |
CN1735946A (zh) | 2006-02-15 |
KR100694556B1 (ko) | 2007-03-13 |
KR20050084216A (ko) | 2005-08-26 |
AU2003294073A1 (en) | 2004-08-10 |
CN100351954C (zh) | 2007-11-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2004741B1 (fr) | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques | |
WO2014207323A1 (fr) | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques | |
EP2099848B1 (fr) | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques | |
EP1238014B1 (fr) | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques | |
EP1570494A1 (fr) | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cable electriques | |
EP1238007B1 (fr) | Compositions polyorganosiloxanes vulcanisables a chaud utilisables notamment pour la fabrication de fils ou cables electriques | |
EP0467800B1 (fr) | Compositions organopolysiloxanes vulcanisables à chaud, utilisables notamment pour le revêtement de câbles électriques | |
EP4189013A1 (fr) | Composition silicone réticulable en élastomère comprenant un additif de tenue thermique | |
EP2924694A1 (fr) | Cable comportant une couche isolante ou de protection exterieure a faible indice de degagement de fumee |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20050601 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
|
DAX | Request for extension of the european patent (deleted) | ||
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: CANPONT, DOMINIQUE Inventor name: LEUCI, CHRISTINE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: CANPONT, DOMINIQUE Inventor name: LEUCI, CHRISTINE |
|
17Q | First examination report despatched |
Effective date: 20100202 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20100601 |