CN101441907B - Coaxial cable and method for producing the same - Google Patents
Coaxial cable and method for producing the same Download PDFInfo
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- CN101441907B CN101441907B CN2008102200524A CN200810220052A CN101441907B CN 101441907 B CN101441907 B CN 101441907B CN 2008102200524 A CN2008102200524 A CN 2008102200524A CN 200810220052 A CN200810220052 A CN 200810220052A CN 101441907 B CN101441907 B CN 101441907B
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- coaxial cable
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Abstract
The present invention relates to communication field and particularly relates to a coaxial cable comprising an inner conductor, an inner thin layer, an insulating layer, an outer thin layer, an aluminum tube type outer conductor, a anticorrosion coating and a sheath from the inside out, and characterized in that the material of anticorrosion coating is middle molecular polyisobutylene which is non-toxic and tasteless, and is a semisolid material with chemical performance steady. Taking middle molecular polyisobutylene as anticorrosion material of coaxial cable and evenly painting it between the outer conductor and the sheath makes the cable moistureproof and anticorrosion. Steam and other gas is proof so that long-term stability and life service can be improved.
Description
Technical field
The present invention relates to communication field, relate in particular to the manufacture method of a kind of coaxial cable and this coaxial cable.
Background technology
In the information age of current develop rapidly, also be faced with unprecedented opportunity to develop and challenge as the coaxial cable on national information basis.The skin of cable generally all has sheath, even without defective, also may seep water, under hot and humid environment, moisture can see through polyethylene and penetrate into cable inside, makes insulating barrier be subjected to the infringement of moisture, so the cable waterproof problem that is adopted is a sixty-four dollar question on the cable road for development.From improving the global reliability of cable, if cable is to move in a humid environment, so, this cable just must add one deck anticorrosive coat in manufacture process.Therefore, this coaxial cable comprises inner wire, interior thin layer, insulating barrier, outer thin layer, outer conductor, anticorrosive coat and sheath from inside to outside successively.Mostly present anticorrosive coat material is with the modified pitch to be the mixture of main prescription, though this material antiseptic property is better, it can discharge penetrating odor in process of production, lives in the air that polluted by pitch, and easily immunogenicity descends.Glance coal and dust can cause poisoning with polluting skin through respiratory tract, and dermatitis, eye-blurred, eye conjunctivitis, uncomfortable in chest, symptoms such as abdomen is sick, palpitaition, headache take place.Therefore, from environmental protection and healthy aspect, pitch has certain drawback.
Summary of the invention
First purpose of the present invention provides a kind of coaxial cable that antiseptic property has environmental protection that both had.
Another object of the present invention provides a kind of manufacture method of above-mentioned coaxial cable.
For realizing above-mentioned first purpose, provide following technical scheme:
Coaxial cable, it comprises inner wire, interior thin layer, insulating barrier, outer thin layer, aluminum pipe type outer conductor, anticorrosive coat and sheath from inside to outside successively; It is characterized in that the material of described anticorrosive coat is middle molecule polyisobutene.
For realizing above-mentioned second purpose, provide following technical scheme:
The manufacture method of coaxial cable, it comprises following process:
(1) inner wire sizing;
(2) inner wire cleaning;
(3) inner wire preheating;
(4) thin layer extrusion molding;
(5) foaming medium extrusion molding;
(6) after-combustion;
(7) the vertical bag of self-adhesion aluminium foil, braiding;
(8) the molecule polyisobutene applies in;
(9) sheath extrudes;
Wherein, in step (8), the melt temperature of middle molecule polyisobutene is 180-120 ℃, and the thickness of corrosion-inhibiting coating is 0.1-0.15mm.
Middle molecule polyisobutene is nontoxic, tasteless, it is a kind of semi-solid material of stable chemical performance, the molecule polyisobutene is as the anti-corrosion material of coaxial cable in the employing, evenly be coated between outer conductor and the sheath, make cable have excellent protection against the tide, Corrosion Protection, cable vapor impermeable and other gas, long-term stability in use and the useful life that can improve cable.
Description of drawings
Fig. 1 is the sectional view of coaxial cable of the present invention.
Introduce coaxial cable of the present invention and its manufacture method in detail below in conjunction with instantiation.
Embodiment
Referring to Fig. 1, be the sectional view of coaxial cable of the present invention.This coaxial cable comprises inner wire 1, interior thin layer 2, insulating barrier 3, outer thin layer 4, aluminum pipe type outer conductor 5, anticorrosive coat 7 and sheath 6 from inside to outside successively, molecular weight polyisoprene isobutene during the material of this anticorrosive coat 7 adopts, in the molecular weight polyisoprene isobutene have characteristics such as anti-atmosphere, ageing-resistant, weatherability and vapor impermeable, it is coated between cable outer conductor 5 and the sheath 6 equably, can increase the antiseptic property and the pliability of coaxial cable, and not have the drip phenomenon.
After anti-corrosion material adopts polyisobutene, operational environment will be greatly improved, and workers'health has obtained guarantee, can not pollute environment.The key of anticorrosive blanket craft is to apply evenly, does not have the drip phenomenon.
With regard to design, when outer conductor is aluminum pipe type structure, molecule polyisobutene during anti-corrosion material adopts, coat thickness is as the criterion so that outer conductor is coated fully; Basic identical with the existing coaxial cable manufacture method, comprise the steps: the inner wire sizing; The inner wire cleaning; The inner wire preheating; The thin layer extrusion molding; Foaming medium extrusion molding; After-combustion; The vertical bag of self-adhesion aluminium foil, braiding; Middle molecule polyisobutene applies; Sheath extrudes.Coat thickness is 0.1～0.15mm.Because the material of anticorrosive coat has adopted middle molecule polyisobutene, for preventing the mobile of anti-corrosion material, 180-220 ℃ of the melting temperature of middle molecule polyisobutene.
Coaxial cable of the present invention has changed the material of existing coaxial cable anticorrosive coat, and low-molecular-weight polyisobutylene is in a liquid state and semisolid, and it is mobile big, is easy to generate drip as the coaxial cable dope; And high molecular weight polyisobutylene is solid-state, and very difficulty is melted, and producting process difficulty is big, easily causes the corrosion-inhibiting coating coating inhomogeneous, causes antiseptic effect relatively poor relatively.Middle molecule polyisobutene is a kind of colourless, tasteless, nontoxic transparent semi-solid material, has good weatherability, good insulation performance performance, cold flow properties, ultraviolet-resistent property and chemical inertness, and process operation is convenient, and technology is simple.Again because of its resistance to oxidation, acid and alkali-resistance, vapor impermeable and other gas have hydrophobicity, thereby the antiseptic property excellence.Molecule polyisobutene dope substituted original pitch during coaxial cable therefore of the present invention adopted.Following table has been listed performance, the property difference of three kinds of polyisobutene.
| Project | Low molecular polyisobutylene | Middle molecule polyisobutene | The polyphosphazene polymer isobutene |
| Viscosity average molecular weigh | 1000-20000 | 30000-60000 | ≥65000 |
| Product Status | Liquid, semi-solid | Semi-solid | Solid |
| Mobile | Flowability is bigger | Mobile little | Mobile poor |
Coaxial cable environmentally safe of the present invention, simultaneously, resistance to oxidation, acid and alkali-resistance, vapor impermeable and other gas have hydrophobicity, the antiseptic property excellence, the combination property of cable is more excellent.
The utility model anti-corrosion cable makes production environment have significantly and improves by the improvement to anti-corrosion material, and is free from environmental pollution.Simultaneously, cable also has good processability and anti-corrosive properties, is very easy to selecting for use of user, is a kind of environmental friendly, anti-corrosive cable.
Above example is the unrestricted technical scheme of the present invention in order to explanation only.Any modification or partial replacement that does not break away from spirit and scope of the invention all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. coaxial cable, it comprises inner wire, interior thin layer, insulating barrier, outer thin layer, aluminum pipe type outer conductor, anticorrosive coat and sheath from inside to outside successively; It is characterized in that the material of described anticorrosive coat is that viscosity average molecular weigh is the middle molecule polyisobutene of 30000-60000.
2. coaxial cable according to claim 1 is characterized in that described anticorrosive coat evenly is coated between outer conductor and the sheath.
3. coaxial cable according to claim 1 is characterized in that, the thickness of described anticorrosive coat is 0.1-0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102200524A CN101441907B (en) | 2008-12-16 | 2008-12-16 | Coaxial cable and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102200524A CN101441907B (en) | 2008-12-16 | 2008-12-16 | Coaxial cable and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101441907A CN101441907A (en) | 2009-05-27 |
| CN101441907B true CN101441907B (en) | 2011-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102200524A Active CN101441907B (en) | 2008-12-16 | 2008-12-16 | Coaxial cable and method for producing the same |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101894999B (en) * | 2010-07-15 | 2013-07-10 | 中天日立射频电缆有限公司 | 7/8' copper-aluminum composite tube radio frequency coaxial cable and preparation method thereof |
| CN104517683A (en) * | 2013-09-30 | 2015-04-15 | 江苏河阳线缆有限公司 | Production technology of cable |
| CN104282393A (en) * | 2014-09-19 | 2015-01-14 | 中山市鸿程科研技术服务有限公司 | Production technology of electric cable |
| CN104966571A (en) * | 2015-05-11 | 2015-10-07 | 江苏士林电气设备有限公司 | Novel tubular bus |
| CN105448429A (en) * | 2015-12-30 | 2016-03-30 | 合肥星辰电线电缆股份有限公司 | Production process of cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4095039A (en) * | 1976-04-16 | 1978-06-13 | General Cable Corporation | Power cable with improved filling compound |
| GB1534796A (en) * | 1976-03-09 | 1978-12-06 | Post Office | Coaxial cable |
| CN1346134A (en) * | 2000-09-27 | 2002-04-24 | 南方电线公司 | Cable with self-seal medium and method for preventing wire from contact with water |
| CN201364773Y (en) * | 2008-12-16 | 2009-12-16 | 珠海汉胜科技股份有限公司 | Coaxial cable |
-
2008
- 2008-12-16 CN CN2008102200524A patent/CN101441907B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1534796A (en) * | 1976-03-09 | 1978-12-06 | Post Office | Coaxial cable |
| US4095039A (en) * | 1976-04-16 | 1978-06-13 | General Cable Corporation | Power cable with improved filling compound |
| CN1346134A (en) * | 2000-09-27 | 2002-04-24 | 南方电线公司 | Cable with self-seal medium and method for preventing wire from contact with water |
| CN201364773Y (en) * | 2008-12-16 | 2009-12-16 | 珠海汉胜科技股份有限公司 | Coaxial cable |
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|---|---|
| CN101441907A (en) | 2009-05-27 |
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