CN102496415A - Thermoplastic elastomer foaming insulated cable and process for manufacturing same - Google Patents
Thermoplastic elastomer foaming insulated cable and process for manufacturing same Download PDFInfo
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- CN102496415A CN102496415A CN2011104414888A CN201110441488A CN102496415A CN 102496415 A CN102496415 A CN 102496415A CN 2011104414888 A CN2011104414888 A CN 2011104414888A CN 201110441488 A CN201110441488 A CN 201110441488A CN 102496415 A CN102496415 A CN 102496415A
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Abstract
The invention relates to a thermoplastic elastomer foaming insulated cable and a process for manufacturing the same and belongs to the technical field of cable manufacturing. The thermoplastic elastomer foaming insulated cable comprises a conductor (1) and an insulating layer which is extruded on the conductor (1), wherein the insulating layer has a three-layer structure and sequentially comprises a thermoplastic elastomer inner skin layer (2), a thermoplastic elastomer foaming layer (3) and a thermoplastic elastomer outer skin layer (4) from inside to outside. The process for manufacturing the thermoplastic elastomer foaming insulated cable comprises wire-drawing, pre-heating, three-layer co-extrusion, cooling and wire take-up, wherein during three-layer co-extrusion, the thermoplastic elastomer foaming layer performs physical foaming, and nitrogen is uniformly injected into a thermoplastic elastomer. The thermoplastic elastomer foaming insulated cable has the advantages of high ozone resistance, high ultraviolet and optical rotation resistance, high chemical solvent resistance, high tearing resistance, high breaking resistance, high flexibility and high environment friendliness, and foam holes in the foaming layer are small and dense, and are not communicated with one another. The process is simple, and the thermoplastic elastomer foaming insulated cable is easy to manufacture.
Description
Technical field
The present invention relates to a kind of thermoplastic elastomer foaming insulated cable and preparation technology thereof, belong to the cables manufacturing technical field.
Background technology
Along with the high speed development of industries such as China's electric power, electronics, communication, China has become maximum in the world cable producing country.Physical foaming technology promoting the use in telecommunication cable played huge impetus to the development of the communications industry.
In telecommunication cable, the foaming mode of insulating material has two kinds of chemical blowing and physical blowings.Because of the foam degrees of chemical blowing is lower, and the residual electric index to cable of blowing agent has negative effect to a certain degree.So present application is extensive not as good as physical blowing.Physical foaming technology (contains N
2, CO
2Dual mode), be mainly used in the RF radio frequency coaxial-cable manufacturing of moving communicating field, and the CATV of broadcasting and TV system coaxial cable, railway signal class cable, bus cable.
This type of cable all is to adopt the production of skin foam skin polyethylene foamed insulation system; But to bus system to cable require increasingly high; Serious interference, the plague of rats are frequent and lightning protection, requirement of explosion proof are arranged, and the conductor operating temperature improves, and is exactly the requirements such as pliability to its cable in addition.But existing common polyethylene foam insulation can not meet the demands fully.
Summary of the invention
Technical problem to be solved by this invention provides a kind of thermoplastic elastomer foaming insulated cable; This cable abscess is small and dense; And UNICOM not has extremely strong anti tear, the anti-performance of pulling apart mutually, and the warm width of cloth does not use between-40 ℃～100 ℃ through deflecting of millions of numbers and can break.
Another technical problem to be solved by this invention provides a kind of technology for preparing above-mentioned thermoplastic elastomer foaming insulated cable.
For solving first technical problem; A kind of thermoplastic elastomer foaming insulated cable; Comprise the insulating barrier that extrudes on conductor and the conductor; It is characterized in that said insulating barrier is a 3-tier architecture, this insulating barrier is followed successively by thermoplastic elastomer (TPE) endodermis, thermoplastic elastomer foaming layer, thermoplastic elastomer (TPE) exodermis from the inside to surface.
Said thermoplastic elastomer (TPE) is a thermoplastic polyurethane.
For solving second technical problem, the manufacture craft of thermoplastic elastomer foaming insulated cable is characterized in that, may further comprise the steps:
(1) wire drawing: conductor is generated suitable dimensions with wire drawing machine;
(2) preheating: with the plastic extruding machine preheating; Wherein 1# extruder head temperature to tail temperature is set to from 165 ℃ of gradual changes to 195 ℃; The temperature of 2# extruder head to tail is set to from 155 ℃ of gradual changes to 185 ℃, and the temperature of 3# extruder head to tail is set to from 155 ℃ of gradual changes to 185 ℃; Wherein 1# plastic extruding machine, 2# plastic extruding machine, 3# plastic extruding machine are respectively applied for the foaming layer of extrusion molding thermoplastic elastic, thermoplastic elastic endodermis, thermoplastic elastic exodermis;
(3) insulating barrier is three-layer co-extruded: the conductor after step (1) wire drawing is via the effect of 1#, 2#, 3# plastic extruding machine; Adopt three-layer co-extruded technology; The elastomer foamed insulated cable of extruded thermoplastic, wherein physical blowing is adopted in the thermoplastic elastic foaming layer, by pressure foamed gas N
2Be dissolved in thermoplastic elastomer (TPE) equably, inject N
2Pressure be controlled at 300bar;
(4) cooling: with the product cooling that step (3) obtains, through the Water Tank with Temp.-controlled cooling, fully cool off through cold water more earlier, constant temperature bosh temperature is 40-45 ℃;
(5) take-up: the cooled product of step (4) is got into take-up reel via draw-gear.
The present invention has following beneficial effect: the endothelium insulating barrier can with good the bonding together of conductor, guarantee the moisture resistance and the bonding fastness of insulating barrier; Foaming insulation layer is the nitrogen physical blowing, compares the small and dense and UNICOM not mutually of abscess with traditional chemical blowing.Can satisfy-60 ℃ to 100 ℃ working temperature; Anti-behaviour of ozone, uvioresistant rotary light performance, chemically-resistant solvent are good; Have extremely strong anti tear, the anti-performance of pulling apart, the warm width of cloth does not use between-40 ℃～100 ℃ through deflecting of millions of numbers and can break; Promptly recover original external form after the compression, even under adverse circumstances, also can keep its original gentle threading property; Nontoxic, environmental protection, nuisanceless.
Description of drawings
Fig. 1 is the structural representation of thermoplastic elastomer foaming insulated cable of the present invention;
Among the figure: 1 conductor, 2 endodermises, 3 foaming layers, 4 exodermises.
Embodiment
Extruded insulation layer on the conductor 1, this insulating barrier are 3-tier architecture, and it is followed successively by thermoplastic elastomer (TPE) endodermis 2, thermoplastic elastomer foaming layer 3, thermoplastic elastomer (TPE) exodermis 4 from the inside to surface, constitute the thermoplastic elastomer foaming insulated cable.This 3 layer insulating is extruded through three-layer co-extruded.Thermoplastic elastomer (TPE) is preferably thermoplastic polyurethane.
The manufacture craft of above-mentioned thermoplastic elastomer foaming insulated cable may further comprise the steps:
(1) wire drawing: conductor is generated suitable dimensions with wire drawing machine;
(2) preheating: with the plastic extruding machine preheating; Wherein 1# extruder head temperature to tail temperature is set to from 165 ℃ of gradual changes to 195 ℃; The temperature of 2# extruder head to tail is set to from 155 ℃ of gradual changes to 185 ℃, and the temperature of 3# extruder head to tail is set to from 155 ℃ of gradual changes to 185 ℃; Wherein 1# plastic extruding machine, 2# plastic extruding machine, 3# plastic extruding machine are respectively applied for the foaming layer of extrusion molding thermoplastic elastic, thermoplastic elastic endodermis, thermoplastic elastic exodermis;
(3) insulating barrier is three-layer co-extruded: the conductor after step (1) wire drawing is via the effect of 1#, 2#, 3# plastic extruding machine; Adopt three-layer co-extruded technology; The elastomer foamed insulated cable of extruded thermoplastic, wherein physical blowing is adopted in the thermoplastic elastic foaming layer, by pressure foamed gas N
2Be dissolved in thermoplastic elastomer (TPE) equably, inject N
2Pressure be controlled at 300bar;
(4) cooling: with the product cooling that step (3) obtains, through the Water Tank with Temp.-controlled cooling, fully cool off through cold water more earlier, constant temperature bosh temperature is 40-45 ℃;
(5) take-up: the cooled product of step (4) is got into take-up reel via draw-gear.
Claims (3)
1. thermoplastic elastomer foaming insulated cable; Comprise the insulating barrier that extrudes on conductor (1) and the conductor (1); It is characterized in that; Said insulating barrier is a 3-tier architecture, and this insulating barrier is followed successively by thermoplastic elastomer (TPE) endodermis (2), thermoplastic elastomer foaming layer (3), thermoplastic elastomer (TPE) exodermis (4) from the inside to surface.
2. thermoplastic elastomer foaming insulated cable according to claim 1 is characterized in that, said thermoplastic elastomer (TPE) is a thermoplastic polyurethane.
3. the manufacture craft of thermoplastic elastomer foaming insulated cable as claimed in claim 1 is characterized in that, may further comprise the steps:
(1) wire drawing: conductor is generated suitable dimensions with wire drawing machine;
(2) preheating: with the plastic extruding machine preheating; 1# extruder head temperature to tail temperature is set to from 165 ℃ of gradual changes to 195 ℃; The temperature of 2# extruder head to tail is set to from 155 ℃ of gradual changes to 185 ℃, and the temperature of 3# extruder head to tail is set to from 155 ℃ of gradual changes to 185 ℃; Wherein 1# plastic extruding machine, 2# plastic extruding machine, 3# plastic extruding machine are respectively applied for the foaming layer of extrusion molding thermoplastic elastic, thermoplastic elastic endodermis, thermoplastic elastic exodermis;
(3) insulating barrier is three-layer co-extruded: the conductor after step (1) wire drawing is via the effect of 1#, 2#, 3# plastic extruding machine; Adopt three-layer co-extruded technology; The elastomer foamed insulated cable of extruded thermoplastic, wherein physical blowing is adopted in the thermoplastic elastic foaming layer, by pressure foamed gas N
2Be dissolved in thermoplastic elastomer (TPE) equably, inject N
2Pressure be controlled at 300bar;
(4) cooling: with the product cooling that step (3) obtains, through the Water Tank with Temp.-controlled cooling, fully cool off through cold water more earlier, constant temperature bosh temperature is 40-45 ℃;
(5) take-up: the cooled product of step (4) is got into take-up reel via the draw-gear traction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104414888A CN102496415A (en) | 2011-12-26 | 2011-12-26 | Thermoplastic elastomer foaming insulated cable and process for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104414888A CN102496415A (en) | 2011-12-26 | 2011-12-26 | Thermoplastic elastomer foaming insulated cable and process for manufacturing same |
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| Publication Number | Publication Date |
|---|---|
| CN102496415A true CN102496415A (en) | 2012-06-13 |
Family
ID=46188229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104414888A Pending CN102496415A (en) | 2011-12-26 | 2011-12-26 | Thermoplastic elastomer foaming insulated cable and process for manufacturing same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000270A (en) * | 2012-11-02 | 2013-03-27 | 深圳市沃尔核材股份有限公司 | SFP (small form-factor pluggable) high-frequency wire and method for producing same |
| CN105713147A (en) * | 2016-04-28 | 2016-06-29 | 中山泛亚电业有限公司 | Irradiation-crosslinked material for coaxial cables and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651245A (en) * | 2009-08-07 | 2010-02-17 | 江苏东强股份有限公司 | High-performance radiant leaky coaxial cable |
| CN101667472A (en) * | 2008-09-03 | 2010-03-10 | 科络普拉斯特弗里茨米勒有限公司 | Electric lead sheathed by foamed polyurethane |
| CN201638593U (en) * | 2010-01-18 | 2010-11-17 | 中天日立射频电缆有限公司 | Electric wire or cable of easy identification |
| CN202473394U (en) * | 2011-12-26 | 2012-10-03 | 宝胜科技创新股份有限公司 | Thermoplastic elastomer foaming insulation cable |
-
2011
- 2011-12-26 CN CN2011104414888A patent/CN102496415A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667472A (en) * | 2008-09-03 | 2010-03-10 | 科络普拉斯特弗里茨米勒有限公司 | Electric lead sheathed by foamed polyurethane |
| CN101651245A (en) * | 2009-08-07 | 2010-02-17 | 江苏东强股份有限公司 | High-performance radiant leaky coaxial cable |
| CN201638593U (en) * | 2010-01-18 | 2010-11-17 | 中天日立射频电缆有限公司 | Electric wire or cable of easy identification |
| CN202473394U (en) * | 2011-12-26 | 2012-10-03 | 宝胜科技创新股份有限公司 | Thermoplastic elastomer foaming insulation cable |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000270A (en) * | 2012-11-02 | 2013-03-27 | 深圳市沃尔核材股份有限公司 | SFP (small form-factor pluggable) high-frequency wire and method for producing same |
| CN105713147A (en) * | 2016-04-28 | 2016-06-29 | 中山泛亚电业有限公司 | Irradiation-crosslinked material for coaxial cables and preparation method thereof |
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Application publication date: 20120613 |