MXPA96003299A - Electric conductor cable extruded in three-phase insulation of low absorption of method and electrical humidity, low emission of toxic gases and smoke, retardant to the fl - Google Patents
Electric conductor cable extruded in three-phase insulation of low absorption of method and electrical humidity, low emission of toxic gases and smoke, retardant to the flInfo
- Publication number
- MXPA96003299A MXPA96003299A MXPA/A/1996/003299A MX9603299A MXPA96003299A MX PA96003299 A MXPA96003299 A MX PA96003299A MX 9603299 A MX9603299 A MX 9603299A MX PA96003299 A MXPA96003299 A MX PA96003299A
- Authority
- MX
- Mexico
- Prior art keywords
- low
- layer
- extruded
- parts
- electrical
- Prior art date
Links
- 239000004020 conductor Substances 0.000 title claims abstract description 34
- 238000009413 insulation Methods 0.000 title claims abstract description 20
- 239000000779 smoke Substances 0.000 title claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 17
- 239000002341 toxic gas Substances 0.000 title claims abstract description 8
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 26
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 4
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 4
- 229920001038 ethylene copolymer Polymers 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 238000010998 test method Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N Antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 claims description 9
- 239000004014 plasticizer Substances 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 7
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 7
- 238000010291 electrical method Methods 0.000 claims description 7
- 239000003063 flame retardant Substances 0.000 claims description 7
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- YJOMWQQKPKLUBO-UHFFFAOYSA-L lead(2+);phthalate Chemical compound [Pb+2].[O-]C(=O)C1=CC=CC=C1C([O-])=O YJOMWQQKPKLUBO-UHFFFAOYSA-L 0.000 claims description 5
- 239000000314 lubricant Substances 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- PZZYQPZGQPZBDN-UHFFFAOYSA-N Aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 229960003563 Calcium Carbonate Drugs 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- IISBACLAFKSPIT-UHFFFAOYSA-N Bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 2
- MLPBXDBEWJPBBI-UHFFFAOYSA-N barium(2+);dioxidoboron Chemical compound [Ba+2].[O-][B][O-] MLPBXDBEWJPBBI-UHFFFAOYSA-N 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- QIQXTHQIDYTFRH-UHFFFAOYSA-M stearate Chemical compound CCCCCCCCCCCCCCCCCC([O-])=O QIQXTHQIDYTFRH-UHFFFAOYSA-M 0.000 claims description 2
- 150000003752 zinc compounds Chemical class 0.000 claims description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N Barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 claims 2
- 239000005977 Ethylene Substances 0.000 claims 1
- 230000000996 additive Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 229920001577 copolymer Polymers 0.000 claims 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000003517 fume Substances 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- 230000003287 optical Effects 0.000 claims 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 claims 1
- 229910052604 silicate mineral Inorganic materials 0.000 claims 1
- -1 polyethylene Polymers 0.000 abstract description 3
- 239000004698 Polyethylene (PE) Substances 0.000 abstract description 2
- 229920000573 polyethylene Polymers 0.000 abstract description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 23
- 239000000126 substance Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 9
- 230000001681 protective Effects 0.000 description 9
- 239000003017 thermal stabilizer Substances 0.000 description 4
- 229920001169 thermoplastic Polymers 0.000 description 4
- 239000004416 thermosoftening plastic Substances 0.000 description 4
- 239000003963 antioxidant agent Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 241000091577 Mexicana Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000003078 antioxidant Effects 0.000 description 2
- 229910052788 barium Inorganic materials 0.000 description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium(0) Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VYQNWZOUAUKGHI-UHFFFAOYSA-N monobenzone Chemical compound C1=CC(O)=CC=C1OCC1=CC=CC=C1 VYQNWZOUAUKGHI-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- APUSBZKGVKSIJO-UHFFFAOYSA-K 3,5,6-tris(7-methyloctyl)benzene-1,2,4-tricarboxylate Chemical compound CC(C)CCCCCCC1=C(CCCCCCC(C)C)C(C([O-])=O)=C(C([O-])=O)C(CCCCCCC(C)C)=C1C([O-])=O APUSBZKGVKSIJO-UHFFFAOYSA-K 0.000 description 1
- 239000004135 Bone phosphate Substances 0.000 description 1
- 241000272184 Falconiformes Species 0.000 description 1
- 241000005139 Lycium andersonii Species 0.000 description 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K Tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 1
- 230000000111 anti-oxidant Effects 0.000 description 1
- CMCJNODIWQEOAI-UHFFFAOYSA-N bis(2-butoxyethyl)phthalate Chemical compound CCCCOCCOC(=O)C1=CC=CC=C1C(=O)OCCOCCCC CMCJNODIWQEOAI-UHFFFAOYSA-N 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000012612 commercial material Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- ONUFRYFLRFLSOM-UHFFFAOYSA-M lead;octadecanoate Chemical compound [Pb].CCCCCCCCCCCCCCCCCC([O-])=O ONUFRYFLRFLSOM-UHFFFAOYSA-M 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000117 poly(dioxanone) Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000003638 reducing agent Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 230000002195 synergetic Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 125000005591 trimellitate group Chemical group 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
Abstract
The present invention relates to an electric conductor of three coextruded layers for cable insulation having an insulation with low moisture absorption, low emission of toxic gases and smoke and high resistance to the flame, comprising: a) a conductor core electrical; b) characterized by three coextruded insulating layers around the conductor core, wherein the three layers comprise: a) a first layer of the three insulating layers extruded on the conductor core, which has a low emission, low dielectric constant and a thermal class of 105 ° C, said first layer consisting of a polyvinyl chloride compound as a base, b) a second layer of the three insulating layers is on the first layer, as a moisture barrier, comprising a compound of high density polyethylene having a flow index of about 0.15 to about 1.0, said polyethylene is optionally modified with an ethylene copolymer which a concentration of about 0 to about 60% by weight, and finally c) a third layer of the three insulating layers extruded on said second layer and has a low emission and low dielectric constant, the third layer being a cover based on chloride of polivini
Description
ELECTRIC CONDUCTOR CABLE EXTRUDED IN THREE INSULATING LAYERS
OF LOW ABSORPTION OF HUMIDITY ELECTRICAL METHOD, LOW EMISSION OF TOXIC GASES AND SMOKE, RETARDANT TO THE FLAME.
BACKGROUND OF THE INVENTION
Currently the manufacture of electrical cables and especially those intended for the construction industry, is limited to the use of a compound of polyvinyl chloride (PVC) that forms the insulating layer of the electrical conductor that can be colored or carry a colorful film.
The need to improve the product according to the conditions that are now required in the buildings, indicate that it requires a low absorption of moisture measured through an electrical method, low emission of toxic gases, low emission of smoke and Flame retardancy, which are specifically marked in the Mexican standard NMX J-10.
It is known that a PVC compound that has additives commonly called mineral fillers, becomes more hygroscopic compromising compliance with water absorption tests (electrical method). However, you can not do without the mineral charges because they are the additives that give us the characteristics of flame, smoke and toxicity among others.
In order to overcome all these requirements the applicant has developed a new electric cable characterized by a triple co-extruded layer of insulating material, which allows to have a barrier against water and which covers all the requirements set by the NMX J-10 standard. .
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 . It corresponds to a sectional sectional view in which the three layers surrounding the driver can be seen concentrically.
FIG. 2. Corresponds to an isometric perspective view showing the sectional cuts of the three concentric layers.
FIG 3 Corresponds to a schematic representation of the extrusion equipment that allows to extrude in a single step the three layers ai sl before d the driver.
DETAILED DESCRIPTION OF THE INVENTION.
The invention is described below according to the drawings of figures 1 to 3, but of course without restricting the scope thereof, this refers to three aspects that allow to satisfactorily comply with the NMX J-10 standard, including that of water absorption measured by means of the electric method:
a) Design of electric cable with triple co-extruded insulating layer b) Manufacturing process of triple electric layer with triple co-extruded insulated layer. c) Formulas of the PVC compounds used for the manufacture of electric cable with triple co-extruded insulating layer.
The manufacture of electrical cables for the construction industry involves the application of a protective layer of copper wire, known as electrical insulation. In them, vinyl halides such as polyvinyl chloride (PVC) are used as the main component. However, its characteristics must be modified, improved or increased by the use of other additives.
For this purpose the applicable standard (NMX J-10) requires the water absorption test (measured by electrical method). In this test, the cable is immersed in a tub with water at 75 ° C and current is passed through it, measuring the initial capacitance and its variations and the dielectric losses that the cable has in a given test time (7 and 14 days).
To achieve this purpose, the applicant developed a new cable that uses a co-extruded triple layer instead of a single insulating layer that allows us to put a barrier against water.
It is known that PVC is a polar polymer and that it is akin to polar materials. Upon contact with the water (which presents a polar behavior) begins a diffusion (penetration) of the same towards the PVC compound. In addition there are other factors that should be considered in this phenomenon.
a) If the PVC compounds are formulated with mineral charges that are hygroscopic, the water absorption is increased.
According to the drawings of figures 1 to 3 the cable is formed by three layers of insulating material which are composed of polyvinyl chloride (PVC) in the internal and external part (1) and modified polyethylene in the central part (2) .
The design shown in figure 1 shows a concentric cable with layers of insulating material extruded one on top of the other.
This is achieved by using a single extrusion head with 3 converging extruders, which is part of the manufacturing process, which will be detailed later.
The innermost layer or first layer (1) is a polyvinyl chloride (PVC) base compound, natural color, low smoke emission, low dielectric constant and thermal class 105 ° C, covering 30 - 40% of the total insulation thickness applied to the electric cable. In general it is the compound that provides the properties of low smoke and high resistance to fire.
The second layer (2) is a high density polyethylene with a flow index suitable for extrusion processes between 0.15 and 1, suitable for extrusion processes, modified with ethylene copolymer to improve the adhesion of this with the layers of Adjacent PVC in a concentration of 0-60%, and with a thickness of 25-35% of the total insulation applied to the electric cable. In general it is the compound that provides the barrier against water.
The third layer or top layer (3) is a base compound of polyvinyl chloride (PVC), which can be colored, with low smoke emission, low dielectric constant, high mechanical resistance, high degree of slip, covering 30-35% of the total insulation thickness applied to the electric cable. In general it is the compound that provides the mechanical and appearance characteristics of the cable.
The electrical conductor (4) is a soft copper wire or cable that meets the requirements outlined in the NMX J-036.
The manufacturing process is characterized in that the materials are expanded at the same time and are passed through an extrusion head that forms the concentric layers previously detailed. The innovation of the process consists of determining the process conditions that allow to have dimensional stability in the product. In addition, the final diameter of the product is constantly maintained according to the above specifications.
Figure 3 is a schematic representation of the construction process of the co-extruded triple insulating layer construction cable.
In low voltage electrical insulation composition formulations, polyvinyl chloride (PVC) is widely used due to its availability, low cost, its mechanical properties, its chemical resistance and the environment and its dielectric properties. The use of P VC for the purposes of this invention is always using the addition of conventional plasticizers to remove its natural rigidity and flexibility, other additives are also used such as: thermal stabilizers, lubricants, pigments, fillers, modified Impact and flame retardant ores that are added to the computer to modify it and obtain the desired properties.
The vinyl polychloride compounds designed must be highly resistant to the flame, in addition to generating a minimum of dark smoke and low corrosivity to protect both the people present in a fire, as well as the devices and equipment. electronic devices that fire and that are in the area of the accident. In addition to the addition of all these additives, a P VC compound is required that has good processability with mechanical characteristics and resistance to the environment within defined values.
Following the implementation of the Mexican standard NMX-J-10, for cables type THHW-LS (the suffix LS denotes limited smoke generation and low acidity), it became necessary to develop compounds based on PVC polymer resin that had the characteristics to meet the following requirements:
Tensile stress at rupture Elongation at rupture Resistance at high temperature (Aged in the furnace) Resistance to mineral oils Low smoke generation during combustion Low emission of acid gases released during combustion
Electrical resistance Resistance to flame propagation Resistance to bending at low temperatures Low deformation at high temperature Resistance to water absorption A maximum dielectric constant of 10 to 75 ° C- Resistance to sudden changes in temperature (thermal shock)
The invention comprises a PVC-based polymeric composition, both in insulation and in roofing, with flame retardancy, low smoke emission, low acidity and low water absorption properties, characterized by a synergistic mixture of the following components: Vinyl polychloride - Dibasic lead phthalate - Mineral fillers - Antimony trioxide - Barium metaborate - Organic zinc compound - Lubricant - Trimellitic plasticizers The amounts of the components are expressed in parts per hundred resin or the sum of these with other resins involved All the components that form the formulas are commercial materials according to the following information:
a PVC RESIN 250, High viscosity and high molecular weight PVC resin, Chemical Abstracts Registry No. 9002-86-2, supplier: GRUPO PRIMEX S.A. DE C.V. b Dibasic lead phthalate, Chemical Abstracts Registry No.68388-85-3, supplier: EAGLE PASS c CALFROST 1, Micronized calcium carbonate, Chemical
Abstracts Registry No.1317-65-3, supplier: MOLINOS DEL
NORTH S.A. DE C.V. d SANTINTONE SP-33, Aluminum silicate, Chemical Abstracts
Registry No.39388-40-4, supplier: ENGELHARD CORP. e ZB-223, Zinc Borate, Chemical Abstracts Registry No. 14720-55-9, supplier: Charlotte Chemical Inc. f Dibasic lead stearate, Chemical Abstracts Registry
No.56189-09-4, supplier: METAL-ORGANIC DERIVATIVES
S.A. DE C.V. g Plasticizer DOTP-E, Chemical Abstracts Registry No. 6422-86-2, supplier: EASTMAN CHEMICAL Co. n Palatinol 79TM, Trisyl trimellitate plasticizer, Chemical
Abstracts Registry No. 68515-60-6, supplier: BASF MEXICANA
S.A. DE C.V.
i Jayflex TINTM, Tri-isononyl trimellitate plasticizer, Chemical Abstracts Registry No. 53894-23-8, supplier: EXXON MEXICANA, S.A. DE C.V. j Antimony trioxide, Flame Retardant, Chemical Abstracts Registry No. 01309-64-4, supplier: ANZON INC. k Barium Metaborate, Flame Retardant, Chemical Abstracts
Registry No. 13701-59-2, supplier: BUCKMAN LABORATORIES
S.A. DE C.V. 1 Bisphenol "A", Antioxidant, Chemical Abstracts Registy No. 68784-69-0, supplier: RHONE POULENC.
In PVC-based thermoplastic materials, lead stabilizers such as dibasic lead phthalate and tribasic lead sulphate are often used as thermal stabilizers, however, in principle other types of thermal stabilizers can be used among those found in soap soaps. barium, cadmium or zinc. Similarly, other antioxidants besides BISFENOL A can be used among those found in the AGERITE SUPERLITE of RT VANDERBILT. For the aluminum silicate SANTINTONE SP-33, in principle other silicates can be used as the SANTINTONE 2 by Engelhard and the BURGUESS 30 by Burgess
The polymeric compositions with flame retardancy, low smoke generation, low acidity and low water absorption characteristics of the present invention include the following components, in the amounts listed: Vinyl polychloride as Primex resin 225-1 or 250 in quantities ranging from 60 parts to 100 parts.
At least one thermal stabilizer used in PVC compounds for use in insulation of electric cables such as dibasic lead phthalate, in quantities ranging from 6 parts to 12 parts per hundred resin. At least one effective antioxidant for PVC-based thermoplastic materials such as BISFENOL "A", in a total amount of 0.2 to 1.2 parts per hundred resin. At least one effective lubricant for thermoplastic materials based on
PVC like lead stearate or similar, adding it in a total amount ranging from 0.15 to 4.0 parts per hundred resin. At least one plasticizer that is defined by the thermal degree of the compound can be used from PDO to TINTM through plasticizers of the linear type in quantities ranging from 10 parts to
60 parts per hundred resin. A load of calcined aluminum silicate in amounts ranging from
to 40 parts per hundred resin. A load of calcium carbonate in amounts ranging from 5 to 70 parts per hundred resin. A primary flame retardant based on antimony trioxide or the like in amounts ranging from 0.5 parts to 8 parts per hundred resin and another secondary based on barium or the like in amounts ranging from 0.5 parts to 8 parts per hundred resin. A smoke reducer based on a material based on inorganic zinc complex in amounts ranging from 1 part to 6 parts per hundred resin.
PROCEDURE FOR PREPARING THE COMPOSITION The plasticizers are weighed and added to the PVC resin together with the stabilizer in the intensive mixer at a temperature of approximately 70 ° C; subsequently, the charges and lubricants are added. The mixer is worked until the formation of the dry mix, which is finally discharged to a cooler with a water jacket to reduce the temperature of the mixture, thus preventing the formation of agglomerates that impede the free flow of the powder. Once the mixture acquires a temperature 10-15 ° C above that of the environment, it passes to the plasticizing process. The process can use a twin-screw extruder machine or "kno-kneader" type that plasticizes the mixture and pellets or pellets. An internal Banbury mixer can also be used, in which the compound is worked up to a temperature of approx. 160 ° C by unloading the material on a roller mill where a band is obtained that is finally cut into granules.
The formulation of the composition of both the insulation layer (1) and the cover (3) of the invention optimized for use in electric cables, was prepared in accordance as previously described.
The cable obtained according to the formulation of this invention was subjected to the tests marked in the Mexican standard NMX-J-10, using the following test procedures:
NMX-J-40 Electrical industry- Determination of moisture absorption in insulation and protective covers of electrical conductors - Test method. NMX-J-93 Electrical products - Conductors - Determination of the resistance to the propagation of fire in electrical conductors - Test methods. NMX-J-177 Determination of thicknesses of semiconductor screens, insulation and protective covers of electrical conductors.
NMX-J-178 Determination of tensile stress at rupture and elongation of semiconductive screens, insulations and protective covers of electrical conductors - Test methods. NMX-J-186 Accelerated aging in oven to semiconducting screens, insulation and protective covers of electrical conductors - Test methods. NMX-J-189 Electrical products - Conductors - Flexibility of insulated electrical conductors with polyvinyl chloride (PVC) - Test method. NMX-J-190 Thermal shock resistance of PVC insulation and protective covers of electrical conductors - Test method. NMX-J-191 Heat deformation of semiconducting screens, insulations and protective covers of electrical conductors - Test method NMX-J-193 Cold bending of insulations and protective covers of electrical conductors - Test method. NMX-J-194 Accelerated aging in oil for insulation and protective covers of insulated electrical conductors - Test method. NMX-J-292 Electrical products - Conductors - Protective covers based on thermoplastic materials for low, medium and high voltage power cables. NMX-J-294 Electrical products - Conductors - Insulation resistance - Test method. NMX-J-472 Electrical products - Conductors Determination of the amount of halogenated acid gas generated during the controlled combustion of polymeric materials taken from electrical conductors - Test method.
Claims (6)
1. A co-extruded electric conductor cable in three layers, low moisture absorption insulation, electrical method, low emission of toxic gases and smoke, flame retardant, characterized in that it comprises three insulating layers concentric to the core of the conductor of different polymer composition, respectively extruded simultaneously in a mechanical extrusion arrangement to form a conductive cable with a single envelope that maintains all the physical characteristics of each respective layer, the first layer being based on a vinyl polychloride compound low smoke emission, dielectric constant and thermal class of 105 ° C; the second layer being based on a high density polyethylene compound with a flow index of 0.15 to 1.0 modified with a copolymer of ethylene in a concentration of 0 to 60% as a moisture barrier; and a third layer based on a vinyl polychloride compound with low smoke emission and low dielectric constant, but high mechanical resistance and high degree of slip.
2. A co-extruded electrical conductor cable in three insulating layers according to clause 1, characterized in that the first layer of polyvinyl chloride covers from 35 to 40% of the total insulation thickness applied to the electric cable, covering the second layer of high density polyethylene modified with ethylene copolymer, a thickness of 25-35% of the total insulation applied to said cable, and finally the third layer of polyvinyl chloride covering 30 to 35% of the total insulation.
3. A co-extruded electrical conductor cable in three insulating layers in accordance with clause 1, characterized in that the vinyl polychloride used both in the insulation and in the shell with properties of flame retardancy, low smoke emission, low acidity and low water absorption is mixed in a proportion of 60 to 100 parts by weight with a mixture of additive components based on: dibasic lead phthalate, mineral fillers, antimony trioxide, barium metaborate, organic zinc compound, lubricating agent and trimethylic plasticizers.
4. A co-extruded electrical conductor cable in three insulating layers according to clause 3, characterized in that the mixture of additives are added in a weight ratio of 6 to 12 parts per hundred of dibasic phthalate resin of lead, from 0.2 to 1.2 parts of bisphenol A, from 0.15 to 4 parts of lead stearate, from 10 to 60 parts of a plasticizing agent, from 5 to 40 parts of aluminum silicate mineral charges, from 5 to 70 parts of calcium carbonate, from 0.5 to 8 parts of antimony trioxide, 0.5 to 8 parts of a barium oxide and 1 to 6 parts of an inorganic metal oxide complex.
5. Process for producing a co-extruded triple-layer insulating electrical conductor cable, with low moisture absorption properties, electrical method, low toxic gas emission, low smoke, flame retardant, characterized in that it comprises preparing the compositions separately of each of the insulating layers and then extruded simultaneously into an array of extruders of similar dimensions and passed through an extrusion head where said head makes the splice of the insulating layers, forming a single concentric insulating layer at the electrical conductor and does not allow the layers to diffuse individually with each other.
6. Process for producing a co-extruded triple-layer insulating electrical conductor cable, according to clause 5, characterized in that the extrusion is carried out with the process conditions that allow obtaining an insulating product with dimensional stability. E X T R A C T O. This invention relates to a triple insulated co-extruded construction cable with properties of low moisture absorption, electrical method, low emission of toxic gases, low smoke, flame retardant. Its design, its manufacturing process and the compounds used in its manufacture. The object of this invention is to provide a type of cable totally different from those currently on the market, with a triple insulating layer, which allows it to pass the requirements of moisture absorption, electric method, low smoke, low emission of toxic gases, retardant to the flame and that fulfills the requirements marked in the NMX J-10 standard.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| MX9603299A MX9603299A (en) | 1996-08-09 | 1996-08-09 | Co-extruded electric conductive cable in three electric method humidity low absorbing isolating layers, low emission toxic gases and vapors, flame retarding. |
| US08/791,230 US5912436A (en) | 1996-08-09 | 1997-01-30 | Co-extruded electric conductor cable in three insulating layers of low humidity absorption electric method low smoke and toxic gas emission flame retardant |
| ARP970103239A AR007925A1 (en) | 1996-08-09 | 1997-07-18 | THREE-LAYER ELECTRIC CO-EXTRUDED CONDUCTIVE CABLE WITH LOW MOISTURE ABSORPTION, WITH LOW EMISSION OF TOXIC GASES AND SMOKE, AND WITH HIGH RESISTANCE TO THE FLAME, AND PROCEDURE TO PRODUCE IT |
| CA002212672A CA2212672C (en) | 1996-08-09 | 1997-08-08 | Co-extruded electric conductor cable in three insulating layers of low humidity absorption electric method low smoke and toxic gas emission flame retardant |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP94301641.0 | 1994-03-08 | ||
| MX9603299A MX9603299A (en) | 1996-08-09 | 1996-08-09 | Co-extruded electric conductive cable in three electric method humidity low absorbing isolating layers, low emission toxic gases and vapors, flame retarding. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| MXPA96003299A true MXPA96003299A (en) | 1998-04-01 |
| MX9603299A MX9603299A (en) | 1998-04-30 |
Family
ID=19744928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX9603299A MX9603299A (en) | 1996-08-09 | 1996-08-09 | Co-extruded electric conductive cable in three electric method humidity low absorbing isolating layers, low emission toxic gases and vapors, flame retarding. |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5912436A (en) |
| AR (1) | AR007925A1 (en) |
| CA (1) | CA2212672C (en) |
| MX (1) | MX9603299A (en) |
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| MXPA00011517A (en) * | 2000-11-23 | 2002-05-27 | Servicios Condumex Sa | Lead-free pvc polymeric composition for insulation and motor vehicle cable coating of thin wall with abrasion and high operational temperature resistance. |
| US20080217044A1 (en) * | 2003-10-01 | 2008-09-11 | Southwire Company | Coupled building wire assembly |
| US20060068085A1 (en) * | 2004-07-13 | 2006-03-30 | David Reece | Electrical cable having a surface with reduced coefficient of friction |
| US20060249298A1 (en) * | 2004-07-13 | 2006-11-09 | David Reece | Electrical cable having a surface with reduced coefficient of friction |
| US7411129B2 (en) * | 2004-07-13 | 2008-08-12 | Southwire Company | Electrical cable having a surface with reduced coefficient of friction |
| US20060065428A1 (en) * | 2004-07-13 | 2006-03-30 | Kummer Randy D | Electrical cable having a surface with reduced coefficient of friction |
| US7749024B2 (en) * | 2004-09-28 | 2010-07-06 | Southwire Company | Method of manufacturing THHN electrical cable, and resulting product, with reduced required installation pulling force |
| US7557301B2 (en) * | 2004-09-28 | 2009-07-07 | Southwire Company | Method of manufacturing electrical cable having reduced required force for installation |
| US10763008B2 (en) | 2004-09-28 | 2020-09-01 | Southwire Company, Llc | Method of manufacturing electrical cable, and resulting product, with reduced required installation pulling force |
| US20060251802A1 (en) * | 2005-05-03 | 2006-11-09 | Kummer Randy D | Electrical cable having a surface with reduced coefficient of friction |
| US7129415B1 (en) * | 2005-10-11 | 2006-10-31 | Southwire Company | Non-lead jacket for non-metallic sheathed electrical cable |
| EP2012911A4 (en) * | 2006-04-21 | 2014-03-26 | Southwire Co | Method and apparatus for multi-stream metered extrusion |
| MXNL06000033A (en) * | 2006-05-26 | 2007-11-26 | Conductores Monterrey S A De C | Coaxial cable having a low surface friction coefficient and method for manufacturing the same. |
| US8800967B2 (en) * | 2009-03-23 | 2014-08-12 | Southwire Company, Llc | Integrated systems facilitating wire and cable installations |
| US8703288B2 (en) * | 2008-03-21 | 2014-04-22 | General Cable Technologies Corporation | Low smoke, fire and water resistant cable coating |
| US8986586B2 (en) * | 2009-03-18 | 2015-03-24 | Southwire Company, Llc | Electrical cable having crosslinked insulation with internal pulling lubricant |
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| US10325696B2 (en) | 2010-06-02 | 2019-06-18 | Southwire Company, Llc | Flexible cable with structurally enhanced conductors |
| MX348660B (en) * | 2011-11-04 | 2017-05-29 | Servicios Condumex Sa | Composition for low smoke, flame retardant, halogen-free, thermoplastic insulation showing good electrical properties in water. |
| US8643169B2 (en) | 2011-11-09 | 2014-02-04 | Freescale Semiconductor, Inc. | Semiconductor sensor device with over-molded lid |
| US9352371B1 (en) | 2012-02-13 | 2016-05-31 | Encore Wire Corporation | Method of manufacture of electrical wire and cable having a reduced coefficient of friction and required pulling force |
| US11328843B1 (en) | 2012-09-10 | 2022-05-10 | Encore Wire Corporation | Method of manufacture of electrical wire and cable having a reduced coefficient of friction and required pulling force |
| CN103730210A (en) * | 2012-10-13 | 2014-04-16 | 富阳优恒电缆有限公司 | Production method for three-layer co-extrusion insulating cable and production system used in production method |
| US10056742B1 (en) | 2013-03-15 | 2018-08-21 | Encore Wire Corporation | System, method and apparatus for spray-on application of a wire pulling lubricant |
| US11011283B2 (en) * | 2013-03-15 | 2021-05-18 | General Cable Technologies Corporation | Easy clean cable |
| US10431350B1 (en) | 2015-02-12 | 2019-10-01 | Southwire Company, Llc | Non-circular electrical cable having a reduced pulling force |
| CN104900327B (en) * | 2015-06-27 | 2016-09-28 | 深州市远征氟塑料有限公司 | The manufacture method of integral type dry type insulating tube type busbar |
| EP3391388B1 (en) * | 2015-12-18 | 2020-07-01 | LEONI Kabel GmbH | Cable and method for producing the cable |
| US10522270B2 (en) | 2015-12-30 | 2019-12-31 | Polygroup Macau Limited (Bvi) | Reinforced electric wire and methods of making the same |
| JP6512133B2 (en) * | 2016-02-25 | 2019-05-15 | 株式会社オートネットワーク技術研究所 | Wire protection member, method for manufacturing the same, and wire harness |
| CN113724928A (en) * | 2016-06-17 | 2021-11-30 | 日立金属株式会社 | Insulated wire and cable |
| US11380459B2 (en) * | 2016-06-17 | 2022-07-05 | Hitachi Metals, Ltd. | Insulated wire |
| CN110462754B (en) | 2017-02-01 | 2022-06-14 | 恩文特服务有限责任公司 | Low-smoke zero-halogen automatic adjusting heating cable |
| JP6756690B2 (en) * | 2017-11-07 | 2020-09-16 | 日立金属株式会社 | Insulated wire |
| JP2019129005A (en) * | 2018-01-22 | 2019-08-01 | 住友電気工業株式会社 | Coating wire and multi-core cable |
| EP3540487A1 (en) | 2018-03-12 | 2019-09-18 | Corning Research & Development Corporation | Optical fiber cable with improved fire protection performance |
| CN111105903A (en) * | 2018-10-29 | 2020-05-05 | 广州南洋电缆有限公司 | Insulated double-layer co-extrusion production process of cable |
| CN113192706A (en) * | 2021-04-25 | 2021-07-30 | 华远高科电缆有限公司 | Double-layer co-extrusion insulation irradiation cross-linking flame-retardant long-life power cable |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711631A (en) * | 1971-01-11 | 1973-01-16 | P Denes | High voltage multi-layer cylindrical devices |
| US3956567A (en) * | 1973-03-05 | 1976-05-11 | National Distillers And Chemical Corporation | Insulated high voltage wire coated with a flame retardant composition and process of preparing the same |
| US4452937A (en) * | 1980-12-22 | 1984-06-05 | Union Carbide Corporation | Ethylene polymer compositions stabilized against water treeing and electrical treeing by an organo titanium chelate; and the use thereof as insulation about electrical conductors |
| US4381364A (en) * | 1982-06-14 | 1983-04-26 | The Upjohn Company | Flame retardant tertiary polymer blend |
| US4447569A (en) * | 1982-10-08 | 1984-05-08 | Argus Chemical Corporation | Polyvinyl chloride resin compositions having a high volume resistivity and resistance to deterioration when heated at temperatures above 100 degrees C. |
| US5036121A (en) * | 1988-09-06 | 1991-07-30 | The B. F. Goodrich Company | Flame and smoke retardant cable insulation and jacketing compositions |
| JPH08298032A (en) * | 1995-04-25 | 1996-11-12 | Nippon Unicar Co Ltd | Manufacture of crosslinked polyethylene insulated power cable |
-
1996
- 1996-08-09 MX MX9603299A patent/MX9603299A/en unknown
-
1997
- 1997-01-30 US US08/791,230 patent/US5912436A/en not_active Expired - Fee Related
- 1997-07-18 AR ARP970103239A patent/AR007925A1/en active IP Right Grant
- 1997-08-08 CA CA002212672A patent/CA2212672C/en not_active Expired - Fee Related
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