CN104795150A - Low-loss type telephone wire - Google Patents
Low-loss type telephone wire Download PDFInfo
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- CN104795150A CN104795150A CN201510118868.6A CN201510118868A CN104795150A CN 104795150 A CN104795150 A CN 104795150A CN 201510118868 A CN201510118868 A CN 201510118868A CN 104795150 A CN104795150 A CN 104795150A
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- loss type
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Abstract
The invention discloses a low-loss type telephone wire which comprises four core wires. Each core wire is composed of a polyethylene strip arranged in the center and 6 copper conductors twisted on the outer surface of the polyethylene strip, multiple air vents are formed in the polyethylene layer, every two of the four conductors respectively form a first stranded wire pair and a second stranded wire pair, and the stranding pitch of each stranded wire pair is 3-5cm. The first stranded wire pair and the second stranded wire pair are stranded to form a core wire whose stranding pitches are 8-10cm. A polyvinyl chloride layer is coated on the outer surface of the polyester strip, a polyethylene restrictive coating is coated on the outer surface of the polyethylene layer, and an intermediate tensile layer is arranged between the polyethylene layer and the polyethylene restrictive coating. The intermediate tensile layer is composed of the polyamide 6 resins, the polyhexamethylene sebacamide, the ethylene and norbornene copolymer, the maleic anhydride grafting amorphous polyolefin, N, N'-two (beta-naphthyl) p-phenylenediamine, the polyethylene wax, the polyethylene glycol and the acetic acid glyceride. The low-loss type telephone wire enables the general dielectric constant of the telephone communication cable sheath insulation to decrease from 2.3 to 1.6 so that the attenuation can be reduced by more than 12% under the same transmission frequency.
Description
Technical field
The present invention relates to a kind of phone lead-in, particularly relate to a kind of low-loss type telephone wire.
Background technology
Traditional telephone wire has two cores and four-core, and core line diameter has 0.4 ~ 1.0mm respectively, and its structure is generally two or four heart yearn outer wrapping polyethylene, and common heart yearn material is copper etc.Existing its hot strength of telephone wire structures shape is limited, when the long distance of needs is installed, need to arrange wirerope specially to strengthen, otherwise easily break, particularly when some ungetable areas are installed as mountain area, the difficulty that wirerope significantly increases construction is set specially, and easily damages, and electric property improves limited.
Summary of the invention
The invention provides a kind of low-loss type telephone wire, this low-loss type telephone wire makes the total dielectric constant of the total jacket insulation of telephone communication cable drop to about 1.6 by 2.3, under identical traffic frequency, decay can reduce by more than 12%, decrease the interference to Signal transmissions simultaneously, tensile strength is significantly improved.
For achieving the above object, the technical solution used in the present invention is: a kind of low-loss type telephone wire, comprise four heart yearns, described heart yearn is made up of the polyethylene strip and stranded 6 copper conductors in polyethylene strip outer surface being positioned at center, these four circular copper conductors outer surfaces are coated with polyethylene layer and form four wires, containing several pores in this polyethylene layer, the volume ratio that several pores described account for polyethylene layer is 40 ~ 60%, nitrogen is filled with in this pore, described four wires are stranded between two forms the first twisted wire pair respectively, second twisted wire pair, the twisting pitch of stranded conductor is 3 ~ 5cm between two, described first twisted wire forms heart yearn to, the second twisted wire strand, and described first twisted wire is 8 ~ 10cm to, the second twisted wire strand pitch, one polyester belt is wrapped in described heart yearn outer surface, and a polyvinyl chloride layer is coated on described polyester belt outer surface, and a pe sheath layer is coated on described polyvinyl chloride layer outer surface, is provided with middle tensile layer between described polyvinyl chloride layer, pe sheath layer,
Described middle tensile layer is composed of the following components:
Polyamide 6 100 parts,
Polyhexamethylene sebacamide 28 ~ 32 parts,
Ethene and norbornene copolymer 10 ~ 15 parts,
Maleic anhydride graft amorphous polyolefin 2.8 ~ 3.5 parts,
N, N'-bis-(betanaphthyl) p-phenylenediamine (PPD) 1 ~ 1.2 part,
Tissuemat E 0.5 ~ 0.8 part,
Polyethylene glycol 0.8 ~ 1.2 part,
Acetin 0.5 ~ 0.8 part;
Described polyamide 6 relative viscosity is below 2.5;
Described ethene and norbornene copolymer density are 1.01 ± 0.01g/cm
3;
Described maleic anhydride graft amorphous polyolefin by unformed polyolefin, maleic anhydride, di-cyclohexylperoxy di-carbonate and lubricant 100:0.4 ~ 3:0.03 in proportion ~ 1:0.1 ~ 0.3 render to double screw extruder carry out glycerol polymerization obtain, its percent grafting is 0.8% ~ 1.5%, and its melt index is 1 ~ 10g/10min.
In technique scheme, further improvement opportunity scheme is as follows:
1., in such scheme, the Thickness Ratio of described polyvinyl chloride layer and middle tensile layer is 10:4 ~ 6.
2., in such scheme, the Thickness Ratio of described pe sheath layer and middle tensile layer is 10:4 ~ 6.
3., in such scheme, described circular copper conductors diameter is 0.4 ~ 1mm.
4., in such scheme, the volume ratio that described pore accounts for polyethylene layer is 40 ~ 60%.
Because technique scheme is used, the present invention compared with prior art has following advantages:
Low-loss type telephone wire of the present invention, it is provided with middle tensile layer between polyvinyl chloride layer, pe sheath layer, this middle tensile layer adopts polyamide 6 100 parts, polyhexamethylene sebacamide 28 ~ 32 parts, ethene and norbornene copolymer 10 ~ 15 parts, maleic anhydride graft amorphous polyolefin 2.8 ~ 3.5 parts, N, N'-bis-(betanaphthyl) p-phenylenediamine (PPD) 1 ~ 1.2 part, makes tensile strength significantly improve; Secondly, its middle tensile layer adds Tissuemat E 0.5 ~ 0.8 part, polyethylene glycol 1.8 ~ 2.2 parts, acetin 0.5 ~ 0.8 part further, both low-loss type telephone wire mechanical strength, bending property had been improve, turn improve the bonding force between polyvinyl chloride layer, pe sheath layer, middle tensile layer, avoid in construction and occur lamination; Again, its heart yearn is made up of the polyethylene strip and stranded 6 copper conductors in polyethylene strip outer surface being positioned at center, further increases self-supporting phone lead-in tensile strength; Again, because polyethylene layer is filled with the nitrogen of 40 ~ 60% volume ratios, make telephone communication cable total dielectric constant that insulate drop to about 1.6 by 2.3, under same conductor, outer insulation diameter and transmission frequency, decay can reduce by more than 12%, considerably increases the transmission range of telephone wire.
Accompanying drawing explanation
Accompanying drawing 1 is low-loss type telephone wire structural representation of the present invention.
In above accompanying drawing: 1, heart yearn; 11, polyethylene strip; 12, copper conductor; 2, polyethylene layer; 3, wire; 41, the first twisted wire pair; 42, the second twisted wire pair; 5, heart yearn; 6, polyester belt; 7, polyvinyl chloride layer; 8, pe sheath layer; 9, middle tensile layer; 10, pore.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described:
Embodiment 1 ~ 5: a kind of low-loss type telephone wire, comprise four heart yearns 1, described heart yearn 1 is made up of the polyethylene strip 11 and stranded 6 copper conductors 12 in polyethylene strip 11 outer surface being positioned at center, these four circular copper conductors 1 outer surfaces are coated with polyethylene layer 2 and form four wires 3, containing several pores 10 in this polyethylene layer 2, the volume ratio that several pores 10 described account for polyethylene layer 2 is 40 ~ 60%, be filled with nitrogen in this pore 10, described four wires 3 are stranded between two forms the first twisted wire to the 41, second twisted wire respectively to 42;
The twisting pitch of stranded conductor 3 is 3 ~ 5cm between two; Described first twisted wire is to the 41, second twisted wire to 42 stranded formation heart yearns 5, and described first twisted wire is 8 ~ 10cm to the 41, second twisted wire to 42 twisting pitch; One polyester belt 6 is wrapped in described heart yearn 5 outer surface, one polyvinyl chloride layer 7 is coated on described polyester belt 6 outer surface, one pe sheath layer 7 is coated on described polyvinyl chloride layer 6 outer surface, is provided with middle tensile layer 9 between described polyvinyl chloride layer 7, pe sheath layer 8;
Above-mentioned polyvinyl chloride layer 7 is 10:5 or 10:5.5 with the Thickness Ratio of middle tensile layer 9, and above-mentioned pe sheath layer 8 is 10:4.5 or 6 with the Thickness Ratio of middle tensile layer 9.
The volume ratio that above-mentioned pore 10 accounts for polyethylene layer 2 is 52% or 48%.
Above-described embodiment 1 ~ 5 middle tensile layer 9 is composed of the following components, as shown in table 1:
Table 1
Above-mentioned polyamide 6 relative viscosity is below 2.5;
Above-mentioned ethene and norbornene copolymer density are 1.01 ± 0.01g/cm
3;
Above-mentioned maleic anhydride graft amorphous polyolefin by unformed polyolefin, maleic anhydride, di-cyclohexylperoxy di-carbonate and lubricant 100:0.4 ~ 3:0.03 in proportion ~ 1:0.1 ~ 0.3 render to double screw extruder carry out glycerol polymerization obtain, its percent grafting is 0.8% ~ 1.5%, and its melt index is 1 ~ 10g/10min.
In embodiment 1 ~ 5 low-loss type telephone wire, the first restrictive coating performance is in table 2:
Table 2
Embodiment of the present invention electric property contrast (for 0.5mm conductor) as shown in table 3 below:
Table 3
When adopting above-mentioned low-loss type telephone wire, it is provided with middle tensile layer between polyvinyl chloride layer, pe sheath layer, this middle tensile layer adopts polyamide 6 100 parts, polyhexamethylene sebacamide 28 ~ 32 parts, ethene and norbornene copolymer 10 ~ 15 parts, maleic anhydride graft amorphous polyolefin 2.8 ~ 3.5 parts, N, N'-bis-(betanaphthyl) p-phenylenediamine (PPD) 1 ~ 1.2 part, makes tensile strength significantly improve; Secondly, its middle tensile layer adds Tissuemat E 0.5 ~ 0.8 part, polyethylene glycol 1.8 ~ 2.2 parts, acetin 0.5 ~ 0.8 part further, both low-loss type telephone wire mechanical strength, bending property had been improve, turn improve the bonding force between polyvinyl chloride layer, pe sheath layer, middle tensile layer, avoid in construction and occur lamination; Again, its heart yearn is made up of the polyethylene strip and stranded 6 copper conductors in polyethylene strip outer surface being positioned at center, further increases self-supporting phone lead-in tensile strength; Again, because polyethylene layer is filled with the nitrogen of 40 ~ 60% volume ratios, make telephone communication cable total dielectric constant that insulate drop to about 1.6 by 2.3, under same conductor, outer insulation diameter and transmission frequency, decay can reduce by more than 12%, considerably increases the transmission range of telephone wire.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (5)
1. a low-loss type telephone wire, it is characterized in that: comprise four heart yearns (1), described heart yearn (1) is made up of the polyethylene strip (11) and stranded 6 copper conductors (12) in polyethylene strip (11) outer surface being positioned at center, these four heart yearn (1) outer surfaces are coated with polyethylene layer (2) and form four wires (3), containing several pores (10) in this polyethylene layer (2), the volume ratio that described several pores (10) account for polyethylene layer (2) is 40 ~ 60%, this pore is filled with nitrogen in (10), described four wires (3) between two stranded first twisted wire that formed respectively to (41), second twisted wire is to (42), the twisting pitch of stranded conductor (3) is 3 ~ 5cm between two, described first twisted wire is to (41), the second twisted wire to (42) stranded formation heart yearn (5), and described first twisted wire is 8 ~ 10cm to (41), the second twisted wire to (42) twisting pitch, one polyester belt (6) is wrapped in described heart yearn (5) outer surface, one polyvinyl chloride layer (7) is coated on described polyester belt (6) outer surface, one pe sheath layer (7) is coated on described polyvinyl chloride layer (6) outer surface, is provided with middle tensile layer (9) between described polyvinyl chloride layer (7), pe sheath layer (8),
Described middle tensile layer (9) is composed of the following components:
Polyamide 6 100 parts,
Polyhexamethylene sebacamide 28 ~ 32 parts,
Ethene and norbornene copolymer 10 ~ 15 parts,
Maleic anhydride graft amorphous polyolefin 2.8 ~ 3.5 parts,
N, N'-bis-(betanaphthyl) p-phenylenediamine (PPD) 1 ~ 1.2 part,
Tissuemat E 0.5 ~ 0.8 part,
Polyethylene glycol 0.8 ~ 1.2 part,
Acetin 0.5 ~ 0.8 part;
Described polyamide 6 relative viscosity is below 2.5;
Described ethene and norbornene copolymer density are 1.01 ± 0.01g/cm
3;
Described maleic anhydride graft amorphous polyolefin by unformed polyolefin, maleic anhydride, di-cyclohexylperoxy di-carbonate and lubricant 100:0.4 ~ 3:0.03 in proportion ~ 1:0.1 ~ 0.3 render to double screw extruder carry out glycerol polymerization obtain, its percent grafting is 0.8% ~ 1.5%, and its melt index is 1 ~ 10g/10min.
2. low-loss type telephone wire according to claim 1, is characterized in that: described polyvinyl chloride layer (7) is 10:4 ~ 6 with the Thickness Ratio of middle tensile layer (9).
3. low-loss type telephone wire according to claim 1, is characterized in that: described pe sheath layer (8) is 10:4 ~ 6 with the Thickness Ratio of middle tensile layer (9).
4. low-loss type telephone wire according to claim 1, is characterized in that: described circular copper conductors (1) diameter is 0.4 ~ 1mm.
5. termite-proof type phone lead-in according to claim 1, is characterized in that: the volume ratio that described pore (10) accounts for polyethylene layer (2) is 40 ~ 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118868.6A CN104795150A (en) | 2015-03-18 | 2015-03-18 | Low-loss type telephone wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118868.6A CN104795150A (en) | 2015-03-18 | 2015-03-18 | Low-loss type telephone wire |
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| CN104795150A true CN104795150A (en) | 2015-07-22 |
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| CN201510118868.6A Pending CN104795150A (en) | 2015-03-18 | 2015-03-18 | Low-loss type telephone wire |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002367446A (en) * | 2001-06-07 | 2002-12-20 | Yazaki Corp | Utp cable |
| CN202771815U (en) * | 2012-08-15 | 2013-03-06 | 安徽神州缆业集团有限公司 | Fluorubber and insulating chloroprene rubber double-sheath cable |
| CN203839123U (en) * | 2014-03-24 | 2014-09-17 | 江苏亨通线缆科技有限公司 | Non-strain data transmission cable used for local area network |
| CN204045272U (en) * | 2014-03-24 | 2014-12-24 | 江苏亨通线缆科技有限公司 | For the data-signal transmission cable of detection system |
| CN204045273U (en) * | 2014-03-24 | 2014-12-24 | 江苏亨通线缆科技有限公司 | Distributing system data transfer cable |
| CN104319005A (en) * | 2014-10-28 | 2015-01-28 | 江苏亨通线缆科技有限公司 | Remote multi-core flexible communication cable |
-
2015
- 2015-03-18 CN CN201510118868.6A patent/CN104795150A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002367446A (en) * | 2001-06-07 | 2002-12-20 | Yazaki Corp | Utp cable |
| CN202771815U (en) * | 2012-08-15 | 2013-03-06 | 安徽神州缆业集团有限公司 | Fluorubber and insulating chloroprene rubber double-sheath cable |
| CN203839123U (en) * | 2014-03-24 | 2014-09-17 | 江苏亨通线缆科技有限公司 | Non-strain data transmission cable used for local area network |
| CN204045272U (en) * | 2014-03-24 | 2014-12-24 | 江苏亨通线缆科技有限公司 | For the data-signal transmission cable of detection system |
| CN204045273U (en) * | 2014-03-24 | 2014-12-24 | 江苏亨通线缆科技有限公司 | Distributing system data transfer cable |
| CN104319005A (en) * | 2014-10-28 | 2015-01-28 | 江苏亨通线缆科技有限公司 | Remote multi-core flexible communication cable |
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Application publication date: 20150722 |