NL2025370A - Polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable - Google Patents

Polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable Download PDF

Info

Publication number
NL2025370A
NL2025370A NL2025370A NL2025370A NL2025370A NL 2025370 A NL2025370 A NL 2025370A NL 2025370 A NL2025370 A NL 2025370A NL 2025370 A NL2025370 A NL 2025370A NL 2025370 A NL2025370 A NL 2025370A
Authority
NL
Netherlands
Prior art keywords
cable
coaxial cable
polyethylene
layer
aluminum hydroxide
Prior art date
Application number
NL2025370A
Other languages
Dutch (nl)
Other versions
NL2025370B1 (en
Inventor
Rui Lichun
Original Assignee
Jiangsu Pucao Tech Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Pucao Tech Co Ltd filed Critical Jiangsu Pucao Tech Co Ltd
Publication of NL2025370A publication Critical patent/NL2025370A/en
Application granted granted Critical
Publication of NL2025370B1 publication Critical patent/NL2025370B1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/02—Disposition of insulation
    • H01B7/0208—Cables with several layers of insulating material
    • H01B7/0225—Three or more layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
    • H01B7/1825—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of a high tensile strength core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/021—Features relating to screening tape per se
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/04—Concentric cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H01B11/18—Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/1895—Internal space filling-up means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel

Abstract

Polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable 5 Disclosed is a polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable, which belongs to the field of cables. The polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable includes four cable conductors arranged in an annular array; an 10 insulating layer is wrapped outside the cable conductor; an inner shielding layer is wrapped outside the insulating layer; the cable conductor, the insulating layer and the inner shielding layer form a cable core; a reinforced core is disposed among the four cable cores; the four cable cores are disposed by tightly attaching to the reinforced core; a first external shielding layer is disposed outside the cable core; and a filling 15 layer is disposed in a space between the first outer shielding layer and the cable core. With an insulating layer, multiple shielding layers, an inner sheath, and an outer sheath, the polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable provided by the present invention can protect the coaxial cable fully and effectively, greatly improves a flame retardance, an oxidation 20 resistance and a shielding performance of the coaxial cable, and prolongs a service life of the cable.

Description

Polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable Technical Field The present invention relates to the technical field of cables, and in particular to a polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable. Background A coaxial cable is a cable in which two concentric conductors are provided, and the conductors share a same axis with a shielding layer. The most common coaxial cable is composed of a copper wire conductor isolated by an insulating material; another layer of annular conductor and an insulator thereof are provided outside an inner layer of insulating material, and then, the whole cable is wrapped by a sheath made of a polyvinyl chloride or Teflon material. The coaxial cable is used between a television user and a community antenna by a television company, may also be used by a television company, and is also widely used in an intranet and an Ethernet. Many cables or many pairs of cables may be put into a same insulating sheath. In cooperation with an amplifier, it may transmit a signal to a very far place. The traditional coaxial cable includes an inner conductor, a polyethylene insulating layer, an outer conductor shielding layer and a material sheath; the outer conductor shielding layer is formed by braiding a copper wire on a composite aluminum-plastic tape, which results in that the cable has an overall hard structure, a low flexibility and a small bending radius and cannot be applied to corner installation, and thus the construction is difficult and the tensile resistance is poor. Additionally, the flame retardance is common, and a noise is generated in a signal transmission process; and the noise is increased along with the acceleration of a transmission frequency to affect a receiving effect of a terminal device. Summary
1. Technical problems to be solved In view of problems in the conventional art, an objective of the present invention is to provide a polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable. With an insulating layer, multiple shielding layers, an inner sheath, and an outer sheath, the polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable provided by the present invention can protect the coaxial cable fully and effectively, greatly improves a flame retardance, an oxidation resistance and a shielding performance of the coaxial cable, and prolongs a service life of the cable.
2. Technical solutions In order to solve the above-mentioned technical problems, the present invention uses the following technical solutions.
A polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable includes four cable conductors arranged in an annular array; an insulating layer is wrapped outside the cable conductor; an inner shielding layer is wrapped outside the insulating layer; the cable conductor, the insulating layer and the inner shielding layer form a cable core; a reinforced core is disposed among the four cable cores; the four cable cores are disposed by tightly attaching to the reinforced core; a first external shielding layer is disposed outside the cable core; a filling layer is disposed in a space between the first outer shielding layer and the cable core; four tensile ropes are disposed between the filling layer and the four cable cores and the reinforced core; a second outer shielding layer is wrapped outside the first outer shielding layer, an inner sheath is wrapped outside the second shielding layer; and an outer sheath is sleeved outside the inner sheath. With an insulating layer, multiple shielding layers, an inner sheath, and an outer sheath, the polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable provided by the present invention can protect the coaxial cable fully and effectively, greatly improves a flame retardance, an oxidation resistance and a shielding performance of the coaxial cable, and prolongs a service life of the cable.
Further, the insulating layer is a cross-linked polyethylene insulating layer. Further, the reinforced core is made by multiple strands of Aramid yarns via twisting. The reinforced core made by the multiple strands of Aramid yarns via twisting can effectively improve a strength of the coaxial cable.
Further, the filling layer is an air bag filled with a carbon dioxide gas, and the air bag is made of a low-ignition-point material by sealing. The filling layer is the air bag filled with the carbon dioxide gas. On one hand, an effective buffering effect can be taken when the cable is extruded by an external force, and a compressive property of the coaxial cable is improved; and on the other hand, when an open flame is generated in the cable, the air bag made of the low-ignition-point material is fractured and the released carbon dioxide can put out a fire quickly, thus effectively improving a safety property of the coaxial cable.
Further, the tensile rope is made by multiple strands of steel wire ropes via twisting. The tensile rope made by the multiple strands of steel wire ropes via twisting can effectively improve a tensile property of the coaxial cable, thus improving a flexibility of the coaxial cable.
Further, the first outer shielding layer is made of a tinned copper wire braided net, and the second outer shielding layer is made of a polytetrafluoroethylene semi-conductive tape. The first outer shielding layer is the tinned copper wire braided net and the second outer shielding layer is the polytetrafluoroethylene semi-conductive tape. The tinned copper wire braided net provides a first layer of shielding, effectively reduces an influence of an external signal in cooperation with the polytetrafluoroethylene semi-conductive tape, and can effectively increase a bending property.
Further, a raw material of the inner sheath includes the following components in parts by weight: 2-5 parts of linear low density polyethylene, 5-10 parts of poly(ethylene-octene) copolymer, 20-50 parts of aluminum hydroxide, 30-40 parts of Ethylene-Vinyl Acetate Copolymer (EVA) resin, 0.7-1.5 parts of silane coupling agent, 2-5 parts of compatilizer, 1-2 parts of rheological agent, 3-8 parts of halogen-free flame retardant, 3-8 parts of antioxidant and 1-3 parts of assistant. By means of formula adjustment of each component of the inner sheath 9, a flame retardant property of the inner sheath 9 is effectively improved; and moreover, smoke released in combustion is less, a resistivity and an oxygen index are greatly improved, and purposes of low smoke, low toxicity and flame retardance are effectively achieved; and the inner sheath provides a first layer of outer protection for the coaxial cable.
Further, a raw material of the outer sheath includes the following components in parts by weight: 55-65 parts of ethylene-vinyl acetate copolymer, 35-50 parts of polyethylene, 5-8 parts of carbon black, 6-8 parts of melamine pyrophosphate, 55-65 parts of modified aluminum hydroxide, 0.1-0.2 parts of dicumyl peroxide,
1.5-2 parts of vinyltrimethoxysilane, 1-2 parts of polyethylene wax, 2-3 parts of talcum powder, 0.5-0.6 parts of ultraviolet light absorber and 2-5 parts of antioxidant. Further, the modified aluminum hydroxide is titanate modified aluminum hydroxide; and a preparation method of the modified aluminum hydroxide is as follows: aluminum hydroxide fine powder and titanate are put into a colloid mill for processing to obtain activated aluminum hydroxide powder, a mass ratio of the aluminum hydroxide fine powder to the titanate being 11-12:1, and the aluminum hydroxide fine powder having a particle size of £1 um; and then, the activated aluminum hydroxide powder is put into a low-speed kneader, 200-220 mL of aluminum stearate ethanol solution having a concentration of 25 wt% is sprayed onto the activated aluminum hydroxide powder, a mixture is mixed for 10-15 min with stirring at a rotational speed of 250-300 r/min, and upon the completion of mixing, the mixture is heated to 80-90°C and continuously mixed for 4-5 h with stirring at a rotational speed of 600-700 r/min to obtain the modified aluminum hydroxide powder. By means of formula adjustment of each component of the outer sheath 10 and with modification on an inorganic flame retardant of aluminum hydroxide and synergy with a phosphorus-based flame retardant, a thermal oxidation resistance and a flame retardance of the material are greatly improved, and a good mechanical property is achieved, and the outer sheath provides a second layer of outer protection for the coaxial cable and further improves the flame retardance and the oxidation resistance of the cable.
3. Beneficial effects Compared with the conventional art, the present invention has the following advantages.
(1) With an insulating layer, multiple shielding layers, an inner sheath, and an outer sheath, the polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable provided by the present invention can protect the coaxial cable fully and effectively, greatly improves a flame retardance, an oxidation resistance and a shielding performance of the coaxial cable, and prolongs a service life of the cable.
(2) A reinforced core 4 made by multiple strands of Aramid yarns via twisting can effectively improve a strength of the coaxial cable.
(3) A filling layer 5 is an air bag filled with a carbon dioxide gas. On one hand, an effective buffering effect can be taken when the cable is extruded by an external force, and a compressive property of the coaxial cable is improved; and on the other hand, when an open flame is generated in the cable, the air bag made of a low-ignition-point material is fractured and the released carbon dioxide can put out a fire quickly, thus effectively improving a safety property of the coaxial cable.
5 (4) A tensile rope 6 made by multiple strands of steel wire ropes via twisting can effectively improve a tensile property of the coaxial cable, thus improving a flexibility of the coaxial cable.
(5) A first outer shielding layer 7 is a tinned copper wire braided net and a second outer shielding layer 8 is a polytetrafluoroethylene semi-conductive tape.
The tinned copper wire braided net provides a first layer of shielding, effectively reduces an influence of an external signal in cooperation with the polytetrafluoroethylene semi-conductive tape, and can effectively increase a bending property.
(6) By means of formula adjustment of each component of the inner sheath 9, a flame retardant property of the inner sheath 9 is effectively improved; and moreover, smoke released in combustion is less, a resistivity and an oxygen index are greatly improved, and purposes of low smoke, low toxicity and flame retardance are effectively achieved; and the inner sheath provides a first layer of outer protection for the coaxial cable.
(7) By means of formula adjustment of each component of the outer sheath 10 and with modification on an inorganic flame retardant of aluminum hydroxide and synergy with a phosphorus-based flame retardant, a thermal oxidation resistance and a flame retardance of the material are greatly improved, and a good mechanical property is achieved; and the outer sheath provides a second layer of outer protection for the coaxial cable and further improves the flame retardance and the oxidation resistance of the cable.
Brief Description of the Drawings Fig. 1 is a front view of the present invention.
In the figures:
1. conductor, 2. insulating layer, 3. inner shielding layer, 4. reinforced core, 5. filling layer, 6. tensile rope, 7. first outer shielding layer, 8. second outer shielding layer, 9. inner sheath, and 10. outer sheath.
Detailed Description of the Embodiments The technical solutions of the embodiments of the present invention are clearly and completely described below in combination with the accompanying drawings in the embodiments of the present invention.
It is apparent that the described embodiments are only a part of embodiments of the present invention, instead of all the embodiments.
All of the other embodiments, obtained by those of ordinary skill in the art based on the embodiments of the present invention without any inventive efforts, fall into the protection scope of the present invention.
In the description of the embodiments of the present invention, orientation or position relationships indicated by the terms “upper”, "lower", "inner", "outer", "top/bottom end" etc. are based on the orientation or position relationships as shown in the drawings, for ease of the description of the present invention only, rather than indicating that the indicated device or element have a particular orientation and must be constructed and operated in the particular orientation.
Therefore, these terms should not be understood as a limitation to the present invention.
In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be construed as indicating or implying a relative importance.
In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms “mounted”, “provided with”, “sleeved” , and “connected” should be understood broadly, for instance, it can be a fixed connection, a detachable connection or an integral connection; can be a mechanical connection, and can also be an electrical connection; can be a direct connection, can also be an indirect connection by an intermediary, and can be an internal communication of two elements.
Those of ordinary skill in the art may understand concrete meanings of the terms in the present invention as per specific circumstances.
Embodiment 1 Referring to Fig. 1, a polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable includes four cable conductors 1 arranged in an annular array; an insulating layer 2 is wrapped outside the cable conductor 1; an inner shielding layer 3 is wrapped outside the insulating layer 2; the cable conductor 1, the insulating layer 2 and the inner shielding layer 3 form a cable core; a reinforced core 4 is disposed among the four cable cores; the four cable cores are disposed by tightly attaching to the reinforced core 4; a first external shielding layer 7 is disposed outside the cable core; a filling layer 5 is disposed in a space between the first outer shielding layer 7 and the cable core; four tensile ropes 6 are disposed between the filling layer 5 and the four cable cores and the reinforced core 4; a second outer shielding layer 8 is wrapped outside the first outer shielding layer 7; an inner sheath 9 is wrapped outside the second shielding layer 8; and an outer sheath 10 is sleeved outside the inner sheath 9. With an insulating layer, multiple shielding layers, an inner sheath, and an outer sheath, the polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable provided by the present invention can protect the coaxial cable fully and effectively, greatly improves a flame retardance, an oxidation resistance and a shielding performance of the coaxial cable, and prolongs a service life of the cable.
The insulating layer 2 is a cross-linked polyethylene insulating layer.
The reinforced core 4 is made by multiple strands of Aramid yarns via twisting. The reinforced core 4 made by the multiple strands of Aramid yarns via twisting can effectively improve a strength of the coaxial cable.
The filling layer 5 is an air bag filled with a carbon dioxide gas, and the air bag is made of a low-ignition-point material by sealing. The filling layer 5 is the air bag filled with the carbon dioxide gas. On one hand, an effective buffering effect can be taken when the cable is extruded by an external force, and a compressive property of the coaxial cable is improved; and on the other hand, when an open flame is generated in the cable, the air bag made of the low-ignition-point material is fractured and the released carbon dioxide can put out a fire quickly, thus effectively improving a safety property of the coaxial cable.
The tensile rope 6 is made by multiple strands of steel wire ropes via twisting. The tensile rope 6 made by the multiple strands of steel wire ropes via twisting can effectively improve a tensile property of the coaxial cable, thus improving a flexibility of the coaxial cable.
The first outer shielding layer 7 is made of a tinned copper wire braided net, and the second outer shielding layer 8 is made of a polytetrafluoroethylene semi-conductive tape. The first outer shielding layer 7 is the tinned copper wire braided net and the second outer shielding layer 8 is the polytetrafluoroethylene semi-conductive tape. The tinned copper wire braided net provides a first layer of shielding, effectively reduces an influence of an external signal in cooperation with the polytetrafluoroethylene semi-conductive tape, and can effectively increase a bending property. A raw material of the inner sheath 9 includes the following components in parts by weight: 2-5 parts of linear low density polyethylene, 5-10 parts of poly(ethylene-octene) copolymer, 20-50 parts of aluminum hydroxide, 30-40 parts of EVA resin, 0.7-1.5 parts of silane coupling agent, 2-5 parts of compatilizer, 1-2 parts of rheological agent, 3-8 parts of halogen-free flame retardant, 3-8 parts of antioxidant and 1-3 parts of assistant.
The inner sheath 9 is increased in the present invention. By means of formula adjustment of each component of the inner sheath 9, a flame retardant property of the inner sheath 9 is effectively improved; and moreover, smoke released in combustion is less, a resistivity and an oxygen index are greatly improved, and purposes of low smoke, low toxicity and flame retardance are effectively achieved; and the inner sheath 9 provides a first layer of outer protection for the coaxial cable.
A raw material of the outer sheath 10 includes the following components in parts by weight: 55-65 parts of ethylene-vinyl acetate copolymer, 35-50 parts of polyethylene, 5-8 parts of carbon black, 6-8 parts of melamine pyrophosphate, 55-65 parts of modified aluminum hydroxide, 0.1-0.2 parts of dicumyl peroxide,
1.5-2 parts of vinyltrimethoxysilane, 1-2 parts of polyethylene wax, 2-3 parts of talcum powder, 0.5-0.6 parts of ultraviolet light absorber and 2-5 parts of antioxidant.
The modified aluminum hydroxide is titanate modified aluminum hydroxide; and a preparation method of the modified aluminum hydroxide is as follows: aluminum hydroxide fine powder and titanate are put into a colloid mill for processing to obtain activated aluminum hydroxide powder, a mass ratio of the aluminum hydroxide fine powder to the titanate being 11-12:1, and the aluminum hydroxide fine powder having a particle size of <1 um; and then, the activated aluminum hydroxide powder is put into a low-speed kneader, 200-220 mL of aluminum stearate ethanol solution having a concentration of 25 wt% is sprayed onto the activated aluminum hydroxide powder, a mixture is mixed for 10-15 min with stirring at a rotational speed of 250-300 r/min, and upon the completion of mixing, the mixture is heated to 80-90°C and continuously mixed for 4-5 h with stirring at a rotational speed of 600-700 r/min to obtain the modified aluminum hydroxide powder.
The outer sheath 10 is increased in the present invention.
By means of formula adjustment of each component of the outer sheath 10 and with modification on an inorganic flame retardant of aluminum hydroxide and synergy with a phosphorus-based flame retardant, a thermal oxidation resistance and a flame retardance of the material are greatly improved, and a good mechanical property is achieved; and the outer sheath provides a second layer of outer protection for the coaxial cable and further improves the flame retardance and the oxidation resistance of the cable.
The above are merely preferred and specific implementation manners of the present invention.
The protection scope of the present invention is not limited thereto.
Any equivalent replacement or change made by those of skill in the art according to the technical solutions and improved concepts of the present invention within a disclosed technical scope of the present invention should be included in the protection scope of the present invention.

Claims (9)

Conclusies 1 . De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel omvat vier kabelkerngeleiders 1 die in een cirkelvormige reeks zijn gerangschikt, is gekenmerkt door: aan de buitenzijde van de voorgenoemde kabelkerngeleider 1 is gewikkeld met isolatielaag 2, en buiten het isolatielaag 2 is een binnenste afschermlaag 3 gewikkeld, en de voorgenoemde kabelkerngeleider 1, de isolatielaag 2 en de binnenste afschermlaag 3 vormen een kabelkern en tussen de vier kabelkernen is een versterkende kabelkern 4 aangebracht, en alle kabelkernen is nauw verbonden met de versterkende kabelkern 4 en aan de buitenzijde van de voorgenoemde kabelkern is een eerste buitenste afschermlaag 7 aangebracht en in de opening tussen de voorgenoemde eerste buitenste afschermlaag 7 en de kabelkern is een vullaag 5 aangebracht, en tussen de voorgenoemde vullaag 5 en de vier kabelkernen en versterkte kabelkernen 4 zijn vier anti-trekkabels 6 aangebracht, en aan de buitenzijde van de voorgenoemde tweede buitenste beschermingslaag 7 is een tweede buitenste beschermingslaag 8 gewikkeld, en bij de voorgenoemde tweede buitenste afschermlaag 8 is buitenmantel 9 omgewikkeld, en aan de buitenzijde van de binnenmantel 9 is een buitenmantel 10 omgehuld.Conclusions 1 . The polyethylene-insulated polyolefin sheathed, low-smoke halogen-free, flame-retardant coaxial cable comprises four cable core conductors 1 arranged in a circular array, is characterized by: on the outside of the aforementioned cable core conductor 1 is wrapped with insulation layer 2, and outside the insulation layer 2 is an inner shielding layer 3 is wound, and the aforementioned cable core conductor 1, the insulation layer 2 and the inner shielding layer 3 form a cable core, and a reinforcing cable core 4 is arranged between the four cable cores, and all the cable cores are closely connected with the reinforcing cable core 4 and on the outside of the a first outer shielding layer 7 is provided in the aforesaid cable core, and a filler layer 5 is provided in the gap between the aforesaid first outer shielding layer 7 and the cable core, and between the aforesaid filler layer 5 and the four cable cores and reinforced cable cores 4, four anti-traction cables 6 are provided , and on the outside of d In the aforesaid second outer protective layer 7, a second outer protective layer 8 is wrapped, and at the aforesaid second outer protective layer 8, outer sheath 9 is wrapped, and on the outside of the inner sheath 9 an outer sheath 10 is wrapped. 2 . De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel volgens conclusie 1, is gekenmerkt door: de voorgenoemde isolerende laag 2 is een verknoopte isolerende polyethyleenlaag.2 . The polyethylene-insulated polyolefin sheathed, low-smoke halogen-free, flame-retardant coaxial cable according to claim 1, is characterized by: said insulating layer 2 is a cross-linked insulating polyethylene layer. 3. De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel volgens conclusie 1, is gekenmerkt door: de voorgenoemde versterkende kabelkern 4 wordt gemaakt van meerdere strengen gesponnen garen.The polyethylene-insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable according to claim 1, characterized by: said reinforcing cable core 4 is made of multi-strand spun yarn. 4 . De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel volgens conclusie 1, is gekenmerkt door: de voorgenoemde vullaag 5 is een airbag gevuld met kooldioxidegas binnenin, en de airbag is gemaakt van een materiaal met een laag brandpunt.4 . The polyethylene-insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable according to claim 1, is characterized by: said filling layer 5 is an airbag filled with carbon dioxide gas inside, and the airbag is made of a material with a low focus. 5. De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel volgens conclusie 1, is gekenmerkt door: de anti-trekkabel 6 is gemaakt van meerdere strengen staaldraad.The polyethylene-insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable according to claim 1, characterized by : the anti-pull cable 6 is made of multiple strands of steel wire. 6 . De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel volgens conclusie 1, is gekenmerkt door: de voorgenoemde eerste buitenste afschermlaag 7 is gemaakt van een vertind koperdraad gevlochten gaas, en de voorgenoemde tweede buitenste afschermlaag 8 is een polytetrafluorethyleen halfgeleidende tape.6 . The polyethylene-insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable according to claim 1, is characterized by: said first outer shielding layer 7 is made of a tinned copper wire braided mesh, and said second outer shielding layer 8 is a polytetrafluoroethylene semiconductive tape. 7 . De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel volgens conclusie 1, is gekenmerkt door: de grondstoffen van de binnenmantel 9 in gewichtsverhouding: lineair polyethyleen met lage dichtheid 2-5%, polyethyleen-octeencopolymeer 5-10%, aluminiumhydroxide 20-50% en EVA-hars 30-40%, silaankoppelingsmiddel 0.7-1.5%, compatibilisator 2-5%, reologisch middel 1-2%, halogeenvrij vlamvertragend 3-8%, antioxidanten 3-8%, additieven 1-3%.7 . The polyethylene-insulated polyolefin sheathed, low-smoke halogen-free, flame-retardant coaxial cable according to claim 1, is characterized by: the raw materials of the inner sheath 9 in weight ratio: linear low-density polyethylene 2-5%, polyethylene-octene copolymer 5-10%, aluminum hydroxide 20- 50% and EVA resin 30-40%, silane coupling agent 0.7-1.5%, compatibilizer 2-5%, rheological agent 1-2%, halogen-free flame retardant 3-8%, antioxidants 3-8%, additives 1-3%. 8. De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel volgens conclusie 1, is gekenmerkt door: de voorgenoemde grondstof van de buitenmantel 10 in gewichtsverhouding: ethyleen-vinylacetaatcopolymeer 55-65%, polyethylene 35-50%, roet 5-8%, melaminepolyfosfaat 6-8%, gemodificeerd aluminiumhydroxide 55-65%, dicumylperoxide 0.1-0.2%, vinyltrimethoxysilaan 1.5-2%, polyethyleenwas 1-2% talk 2-3%, UV-absorber 0.5-0.6% en antioxidant 2-5%.The polyethylene-insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable according to claim 1, characterized by: the aforementioned raw material of the outer sheath 10 in weight ratio: ethylene-vinyl acetate copolymer 55-65%, polyethylene 35-50%, carbon black 5-8 %, melamine polyphosphate 6-8%, modified aluminum hydroxide 55-65%, dicumyl peroxide 0.1-0.2%, vinyltrimethoxysilane 1.5-2%, polyethylene wax 1-2% talc 2-3%, UV absorber 0.5-0.6% and antioxidant 2-5 %. 9 . De met polyethyleen geïsoleerde polyolefine omhulde, rookarme halogeenvrije, vlamvertragende coaxkabel volgens conclusie 8, is gekenmerkt door: het voorgenoemde gemodificeerde aluminiumhydroxide is met titanaat gemodificeerd aluminiumhydroxide, en de bereidingsmethode van het gemodificeerde aluminiumhydroxide is: het plaatsen van het fijne aluminiumhydroxidepoeder en het titanaat in een colloidmolen om geactiveerd aluminiumhydroxidepoeder te verkrijgen, en de massaverhouding van het fijne aluminiumhydroxidepoeder tot het titanaat is 11-12:1, de deeltjesgrootte van het fijne aluminiumhydroxidepoeder is £1 um, en vervolgens wordt het geactiveerde aluminiumhydroxidepoeder in een langzaam draaiende kneder, en sproeit 200-220 ml aluminiumstearaat concentratie van 25% in ethanoloplossing op het geactiveerde aluminiumhydroxidepoeder en het mengsel wordt in gedurende 10-15 minuten geroerd en gemengd met een snelheid van 250-300r/min., nadat het mengen was voltooid, werd de temperatuur verhoogd tot 80-90°C, en blijft roeren en mixen met een snelheid van 600-700r/min. gedurende 4-5 uur om een gemodificeerd aluminiumhydroxidepoeder te verkrijgen.9 . The polyethylene-insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable according to claim 8, is characterized by: the aforementioned modified aluminum hydroxide is titanate-modified aluminum hydroxide, and the preparation method of the modified aluminum hydroxide is: placing the fine aluminum hydroxide powder and the titanate in a colloid mill to obtain activated aluminum hydroxide powder, and the mass ratio of the fine aluminum hydroxide powder to the titanate is 11-12:1, the particle size of the fine aluminum hydroxide powder is 1 µm, and then the activated aluminum hydroxide powder is put into a slow-rotating kneader, and spraying 200 -220 ml aluminum stearate concentration of 25% in ethanol solution on the activated aluminum hydroxide powder and the mixture is stirred and mixed at a speed of 250-300r/min for 10-15 minutes, after the mixing was completed, the temperature was raised up to 80-90°C, and continues to stir and mix at a speed of 600-700r/min. for 4-5 hours to obtain a modified aluminum hydroxide powder.
NL2025370A 2020-02-20 2020-04-20 Polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable NL2025370B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010103402.XA CN111415773A (en) 2020-02-20 2020-02-20 Low-smoke halogen-free flame-retardant coaxial cable with polyethylene insulation polyolefin sheath

Publications (2)

Publication Number Publication Date
NL2025370A true NL2025370A (en) 2021-09-16
NL2025370B1 NL2025370B1 (en) 2023-05-03

Family

ID=71492692

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2025370A NL2025370B1 (en) 2020-02-20 2020-04-20 Polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable

Country Status (2)

Country Link
CN (1) CN111415773A (en)
NL (1) NL2025370B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112489864A (en) * 2020-11-24 2021-03-12 山东无棣海丰电缆有限公司 High-strength flexible cable with good anti-electromagnetic interference effect
CN112670020B (en) * 2020-12-15 2022-05-13 江苏赛德电气有限公司 From protection type fireproof cable
IT202000032015A1 (en) 2020-12-23 2022-06-23 Prysmian Spa MEDIUM VOLTAGE ELECTRIC CABLE WITH BETTER FIRE BEHAVIOR
CN113035412B (en) * 2021-02-06 2023-02-21 安徽铁信光电科技有限公司 Transponder data transmission cable
CN114093562B (en) * 2021-10-29 2023-12-08 江苏帝诚线缆有限公司 Fire monitoring is with fire-retardant fireproof cable
CN114388190A (en) * 2022-01-19 2022-04-22 迈特诺（马鞍山）特种电缆有限公司 Fire-resistant communication cable for Ethernet for rolling stock

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108630341A (en) * 2018-04-28 2018-10-09 无锡市恒汇电缆有限公司 Pressure crane cable and preparation method thereof in a kind of intelligent testing warm type optical fiber composite fire-proof
CN208889360U (en) * 2018-10-25 2019-05-21 江苏赛特电气有限公司 A kind of numerically-controlled machine tool high fire-retardance fire resisting environment-friendly type flexible control cable
EP3499516A1 (en) * 2017-12-12 2019-06-19 Borealis AG Flame retardant and fire resistant polyolefin composition
CN209625858U (en) * 2019-05-28 2019-11-12 吴江市通号线缆有限公司 A kind of track construction cable of wear-resistant tensile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08102221A (en) * 1994-09-30 1996-04-16 Showa Electric Wire & Cable Co Ltd Cable for high voltage electronic equipment
CN201886807U (en) * 2010-11-08 2011-06-29 天津市利泰鑫电缆有限公司 22 kV high-voltage shielded heavy-wire-wrapped reinforced and rubber-jacketed flexible cable used in mine
JP2013196992A (en) * 2012-03-22 2013-09-30 Auto Network Gijutsu Kenkyusho:Kk High-frequency transmission multifunctional cable
CN108511117A (en) * 2017-02-28 2018-09-07 扬州市天帝线缆有限公司 Low-smoke fireproof cable
CN107556599A (en) * 2017-09-13 2018-01-09 安徽美腾特种电缆材料有限公司 A kind of low-smoke and halogen-free flame retardant polyolefin jacket material and preparation method thereof
CN109054164A (en) * 2018-07-23 2018-12-21 安徽成力特科技有限公司 A kind of low-smoke non-halogen flame-retardant cross-linked polyolefin sheath material and preparation method thereof
CN208781608U (en) * 2018-10-17 2019-04-23 安徽光裕电缆科技有限公司 One kind, which is dragged, enables drag chain cable
CN209515222U (en) * 2018-11-16 2019-10-18 安徽宏源特种电缆股份有限公司 Four coaxial cables of aerospace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3499516A1 (en) * 2017-12-12 2019-06-19 Borealis AG Flame retardant and fire resistant polyolefin composition
CN108630341A (en) * 2018-04-28 2018-10-09 无锡市恒汇电缆有限公司 Pressure crane cable and preparation method thereof in a kind of intelligent testing warm type optical fiber composite fire-proof
CN208889360U (en) * 2018-10-25 2019-05-21 江苏赛特电气有限公司 A kind of numerically-controlled machine tool high fire-retardance fire resisting environment-friendly type flexible control cable
CN209625858U (en) * 2019-05-28 2019-11-12 吴江市通号线缆有限公司 A kind of track construction cable of wear-resistant tensile

Also Published As

Publication number Publication date
NL2025370B1 (en) 2023-05-03
CN111415773A (en) 2020-07-14

Similar Documents

Publication Publication Date Title
NL2025370B1 (en) Polyethylene insulated polyolefin sheathed low-smoke halogen-free flame-retardant coaxial cable
CN105957613B (en) A kind of flame retardant cable and preparation method thereof
CN102842376B (en) High-temperature fire-resistant insulated cable for ships and warships
US9087629B2 (en) Fire and water resistant cable
CN104008807A (en) Low-smoke power cable for ship
GB2357895A (en) Fire resistant communications cable
CN105047285A (en) Manufacturing process for fireproof power cable with low conductive temperature
AU2017101785A4 (en) Insulated core wire, CMP grade high-flame-retardant data cable, and manufacturing processes for the two
KR101936806B1 (en) Insulation composition for high flame-retardant and low emitting smoke, Separators using the same and Cable having the seperators
CN105355308B (en) Power cable
CN103554634A (en) High-voltage cable structure with insulating layer with excellent performance
CA2902218C (en) Fire and water resistant cable
CN203536031U (en) Ship and warship shield cable high in current carrying capacity and low in surface temperature rise
CN205595084U (en) Multifunctional sound equipment cable
CN114815109A (en) B2 ca-grade large-core multi-layer stranded flame-retardant air-blowing micro cable and preparation method thereof
KR20160088497A (en) UTP cable
CN101702342B (en) Low-smoke halogen-free flame retardant coaxial cable for nuclear power station
CN110767371B (en) High-temperature computer cable and processing technology thereof
CN110459360B (en) Intrinsic safety cable for environment-friendly explosion-proof place
CN201522890U (en) Low-smoke halogen-free flame-retardant type coaxial cable for nuclear power plant
CN201893161U (en) Soft type low smoke zero halogen cable for ship
Wasserman et al. „Wire and Cable Applications of Polyethylene,“
KR101932254B1 (en) Insulated wire with non-halogenated insulated covered wire compositon
CN106024146B (en) A kind of highly reliable flexible mineral power cable
CN214956174U (en) Integrated cable for signal and digital network transmission