CN108808194A - 6GHz SHF bands Memorability lateral pressure resistant coaxial cable and insulation material formula - Google Patents
6GHz SHF bands Memorability lateral pressure resistant coaxial cable and insulation material formula Download PDFInfo
- Publication number
- CN108808194A CN108808194A CN201810521448.6A CN201810521448A CN108808194A CN 108808194 A CN108808194 A CN 108808194A CN 201810521448 A CN201810521448 A CN 201810521448A CN 108808194 A CN108808194 A CN 108808194A
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- CN
- China
- Prior art keywords
- memorability
- 6ghz
- pressure resistant
- lateral pressure
- coaxial cable
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/06—Coaxial lines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
Abstract
The present invention relates to electric wire product manufacturing fields.There is provided a kind of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable and special physically foamed pe insulation material formulas for purpose, the cable made with this formula, its transmission band bandwidth is up to 6GHz and has shape memory, can bear larger external impacts.Technical solution is：A kind of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable, including conductor and the Memorability polyethylene foamed insulating layer, bending resistance fold-type aluminium foil, screening braid and the restrictive coating that are sequentially coated on from inside to outside on conductor；Using hard PVC as sheath material, the shore hardnesses of Ying Du≤90 are conducive to improve cable lateral pressure resistant performance the restrictive coating；The screening braid is woven using tinned copper wire, it is therefore intended that improves the inoxidizability of cable；Jie Ju≤16mm are woven, its object is to return loss peak value caused by lay of braiding is moved on to 6GHz or more.
Description
Technical field
The present invention relates to electric wire product manufacturing field more particularly to a kind of 6GHz SHF bands Memorability lateral pressure resistant are same
Shaft cable and special physically foamed pe insulation material formula.
Background technology
Increasingly mature with video transmission technology, more and more competitive sports or outdoor sports pass through the system that broadcasts live
System propagates to all over the world.Live broadcast system is usually multimachine position system.Because wired connection can fully ensure that front end is taken the photograph
Camera to director system signal stabilization, therefore in the system of multimachine position be responsible for transmission signal cable all will use comprehensive cable into
Row wired connection.It is appreciated for network-side and television spectators for exquisite match video or performance picture is presented, system is to synthesis
Cable proposes following require：1, the comprehensive cable has to comply with the requirement of delay, because this is to ensure that each seat in the plane signal is same
The key element of step；2, the comprehensive cable necessarily requires enough bandwidth, because to avoid interference signal for mobile instructor in broadcasting
System cannot use relay, and cable transmission bandwidth is wider, and the spacing of each seat in the plane and director system can be longer, is
Cost of uniting can be lower；3, cable will have certain voltage endurance capability, because field condition is more complicated, flow of the people is bigger
, therefore cable is inevitably trampled or is collided with.But in practical engineering application, it has been found that existing comprehensive cable is past
It is past to meet above-mentioned requirements well, therefore mobile director system is smoothed out in order to ensure relaying, often through shortening seat in the plane
Spacing and setting cabling channel place the cable means such as trampled or collided with and make up the deficiency of existing cable.
Invention content
It is an object of the invention to solve the deficiency of above-mentioned background technology, it is anti-to provide a kind of 6GHz SHF bands Memorability
Side pressure coaxial cable and special physically foamed pe insulation material formula, the cable made with this formula, transmission band band
Wide reachable 6GHz simultaneously has shape memory, can bear larger external impacts.
To achieve the above object, technical solution provided by the invention is：
A kind of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable, including conductor and being sequentially coated on from inside to outside are led
Memorability polyethylene foamed insulating layer, bending resistance fold-type aluminium foil, screening braid on body and restrictive coating；
Using hard PVC as sheath material, the shore hardnesses of Ying Du≤90 are conducive to improve cable anti-side the restrictive coating
Press performance；
The screening braid is woven using tinned copper wire, it is therefore intended that improves the inoxidizability of cable；Braiding Jie Ju≤
16mm, its object is to return loss peak value caused by lay of braiding is moved on to 6GHz or more.
The bending resistance fold-type aluminium foil is combined by aluminium foil/PP films/three layers of aluminium foil；Aluminum foil thickness is 10-20 microns, PP films
Thickness is 8-12 microns.And existing conventional aluminium foil generally uses PET film as middle layer, the present invention uses PP films as middle layer
Purpose be that the good advantage resistant to bending of PP toughnesss of material is utilized, to improve the lateral pressure resistant performance of cable.
The inner wire is oxygen-free copper or Copper covered steel material, a diameter of 1.02-1.63mm of inner wire.
The Memorability polyethylene foamed insulating layer is by the way of nitrogen gas foaming that special physical blowing polyethylene is exhausted
Edge material is fabricated to insulating layer.The characteristic feature of the Memorability polyethylene foamed insulating layer is the special physical blowing polyethylene
Insulation Material has shape memory；When there is pressure in the external world, the elastomeric component in insulation can prevent the deformation of insulation from keeping
As former state, to play the role of lateral pressure resistant.The elastomer is similar to the dielectric constant of polyethylene, can guarantee that cable has in this way
Excellent transmittability.
A kind of special physically foamed pe insulation formula of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable, including
Ingredient is：Ldpe resin, high-density polyethylene resin, antioxidant, azo dicarbonamide and olefin type elastomer,
Corresponding parts by weight are respectively 20,70-75,0.5,0.5 and 4-9.
The ldpe resin should have good processing performance and lower dielectric constant, dielectric constant
≦2.28；
The high-density polyethylene resin should have larger melt strength and lower dielectric constant, dielectric constant
≦2.30；
The antioxidant is PE antioxidant.
The azo dicarbonamide is foaming agent and nucleating agent in physically foamed pe insulation material, this material have compared with
High surface-active can effectively reduce the surface tension of melt liquid, and be arranged in liquid film surface electric double layer and surround gas wall,
Bubble is formed, then foam is formed by single isolated bubbles.Under heating condition, assist extraneous nitrogen that can both make the PE of solid core
Layer is transformed into foaming structure.
The olefin type elastomer plays the role of toughener in the formula system.The olefin type elastomer is
A kind of polyolefine material made of ethylene and the copolymerization of propylene or other alpha-olefins (such as 1- butylene, 1- hexenes, 1- octenes etc.).It should
Elastomer shows the high resiliency of rubber at normal temperatures, and at high temperature then can as thermoplastic resin plasticizing forming.Whole
In a formula system, olefin type elastomer proportion can be allocated according to requirement of engineering, the lateral pressure resistant ability that cable requires is higher
Olefin type elastomer ratio then needs more.In engineering application, olefin type elastomer parts by weight are 4-9, preferably 5-7.
Beneficial effects of the present invention：
1) the present invention provides a kind of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable, which is highly suitable for existing
The wired connection that needs in the live broadcast system of field are frequently moved or may be trampled；
2) cable has ultra-wide transmission bandwidth, up to 6GHz, greatly extends the wiring of each seat in the plane and director system
Spacing improves the stability of signal transmission；
3) cable have very high lateral pressure resistant ability, even if when trampled will not be damaged at the scene.
Description of the drawings
Fig. 1 is the main structure diagram of invention.
Specific implementation mode
By embodiment, the invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, the poly- second of Memorability foaming that the present invention includes conductor 5 and is sequentially coated on from inside to outside on conductor
Alkene insulating layer 4, bending resistance fold-type aluminium foil 3, screening braid 2 and restrictive coating 1.
The restrictive coating 1 is using hard PVC as sheath material, the shore hardnesses of Ying Du≤90.
The screening braid 2 is woven using tinned copper wire, preferably weaves Jie Ju≤16mm, its object is to will weave section
6GHz or more is moved on to away from caused return loss peak value.
The bending resistance fold-type aluminium foil 3 is combined by aluminium foil/PP films/three layers of aluminium foil, and aluminum foil thickness is 10-20 microns (excellent
Select 15 microns), PP film thicknesses are 8-12 microns (preferably 10 microns).The present invention uses purpose of the PP films as middle layer, is
Using the good advantage resistant to bending of PP toughnesss of material, to improve the lateral pressure resistant of cable.
The Memorability polyethylene foamed insulating layer 4 is exhausted by special physical blowing polyethylene by the way of nitrogen gas foaming
Edge material is fabricated to insulating layer.
The inner wire 5 is oxygen-free copper or Copper covered steel material, and inner wire diameter is preferably 1.02-1.63mm.
The PE antioxidant is polyolefin (PE) special antioxidant.
Embodiment 1
A kind of special physically foamed pe insulation formula of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable, including
Ingredient is：Ldpe resin, high-density polyethylene resin, antioxidant, azo dicarbonamide and olefin type elastomer,
Corresponding parts by weight are respectively 20,72,0.5,0.5 and 6；
Preparation method is：First weigh ldpe resin, high-density polyethylene resin, antioxidant, azo dicarbonamide
And olefin type elastomer, above-mentioned raw material are weighed according to parts by weight, then above-mentioned material is imported in mixing tank and is stirred
15-20 parts of clocks, then the material mixed is added by the charge door of extruder, it is kneaded by the spiro rod plasticizing of extruder, recirculated water
Graininess is cut into after cooling.It can be prepared by above-mentioned special physically foamed pe insulation material.
After testing, the 6GHz SHF band Memorability lateral pressure resistant coaxial cables that embodiment 1 makes, the comparison with normal cable
Data are as follows：
Embodiment 2
A kind of special physically foamed pe insulation formula of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable, including
Ingredient is：Ldpe resin, high-density polyethylene resin, antioxidant, azo dicarbonamide and olefin type elastomer,
Corresponding parts by weight are respectively 20,70,0.5,0.5 and 9.
Preparation method is same as Example 1.
After testing, the 6GHz SHF band Memorability lateral pressure resistant coaxial cables that embodiment 2 makes, the comparison with normal cable
Data are as follows：
Embodiment 3
A kind of special physically foamed pe insulation formula of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable, including
Ingredient is：Ldpe resin, high-density polyethylene resin, antioxidant, azo dicarbonamide and olefin type elastomer,
Corresponding parts by weight are respectively 20,75,0.5,0.5 and 4.
Preparation method is same as Example 1.
After testing, the 6GHz SHF band Memorability lateral pressure resistant coaxial cables that embodiment 3 makes, the comparison with normal cable
Data are as follows：
It is learnt by embodiment detection data：The bandwidth of the present invention is 5-6 times of normal cable, and pressure-resistant performance is normal cable
2 times or more, transmission performance is 5-6 times of normal cable, disclosure satisfy that live broadcast system needs.
Claims (7)
1. a kind of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable, it is characterised in that the coaxial cable include conductor (5) with
And be sequentially coated on Memorability polyethylene foamed insulating layer (4) on conductor from inside to outside, bending resistance fold-type aluminium foil (3), shielding are compiled
Tissue layer (2) and restrictive coating (1)；
The restrictive coating is using hard PVC as sheath material, the shore hardnesses of Ying Du≤90；
The screening braid is woven using tinned copper wire；
The bending resistance fold-type aluminium foil is combined by aluminium foil/PP films/three layers of aluminium foil；Aluminum foil thickness is 10-20 microns, PP film thicknesses
It is 8-12 microns；
The inner wire is oxygen-free copper or Copper covered steel material, a diameter of 1.02-1.63mm of inner wire.
The Memorability polyethylene foamed insulating layer is to use nitrogen gas foaming mode by special physically foamed pe insulation material system
Insulating layer made of work.
2. 6GHz SHF bands Memorability lateral pressure resistant coaxial cable according to claim 1, it is characterised in that：The shielding
Braiding Jie Ju≤16mm of braiding layer.
3. the special physically foamed pe insulation of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable described in claim 1
Formula, including ingredient be：Ldpe resin, high-density polyethylene resin, antioxidant, azo dicarbonamide and alkene
Class elastomer, corresponding parts by weight are respectively 20,70-75,0.5,0.5 and 4-9.
4. the special physical blowing polyethylene of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable according to claim 3
Insulation formula, it is characterised in that：Shuo≤2.28 Jie electricity Chang of the ldpe resin.
5. the special physical blowing polyethylene of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable according to claim 4
Insulation formula, it is characterised in that：Shuo≤2.30 Jie electricity Chang of the high-density polyethylene resin.
6. the special physical blowing polyethylene of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable according to claim 5
Insulation formula, it is characterised in that：The antioxidant is PE antioxidant.
7. the special physical blowing polyethylene of 6GHz SHF bands Memorability lateral pressure resistant coaxial cable according to claim 6
Insulation formula, it is characterised in that：The parts by weight of the olefin type elastomer are 5-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810521448.6A CN108808194A (en) | 2018-05-28 | 2018-05-28 | 6GHz SHF bands Memorability lateral pressure resistant coaxial cable and insulation material formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810521448.6A CN108808194A (en) | 2018-05-28 | 2018-05-28 | 6GHz SHF bands Memorability lateral pressure resistant coaxial cable and insulation material formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108808194A true CN108808194A (en) | 2018-11-13 |
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ID=64089140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810521448.6A Pending CN108808194A (en) | 2018-05-28 | 2018-05-28 | 6GHz SHF bands Memorability lateral pressure resistant coaxial cable and insulation material formula |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233001A (en) * | 2019-06-21 | 2019-09-13 | 杭州三元电缆有限公司 | A kind of RG-6 copper clad steel coaxial cable and preparation method thereof |
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| WO2008074179A1 (en) * | 2006-12-04 | 2008-06-26 | Zte Corporation | A coaxial cable and its manufacturing approach |
| CN101341553A (en) * | 2005-12-22 | 2009-01-07 | 普雷斯曼电缆及系统能源有限公司 | Electric cable comprising foaming polyolefin isolator and manufacturing method thereof |
| CN103345960A (en) * | 2013-06-09 | 2013-10-09 | 深圳市穗榕同轴电缆科技有限公司 | High-transmission-rate semi-flexible coaxial cable and method for manufacturing high-transmission-rate semi-flexible coaxial cable |
| CN203760217U (en) * | 2013-12-27 | 2014-08-06 | 江苏帝华线缆有限公司 | Special coaxial cable for high-speed rail |
| CN205069217U (en) * | 2015-09-22 | 2016-03-02 | 浙江万马集团特种电子电缆有限公司 | Two type CATV coaxial cable that glue of high shielding of resistant whipping |
-
2018
- 2018-05-28 CN CN201810521448.6A patent/CN108808194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101341553A (en) * | 2005-12-22 | 2009-01-07 | 普雷斯曼电缆及系统能源有限公司 | Electric cable comprising foaming polyolefin isolator and manufacturing method thereof |
| WO2008074179A1 (en) * | 2006-12-04 | 2008-06-26 | Zte Corporation | A coaxial cable and its manufacturing approach |
| CN103345960A (en) * | 2013-06-09 | 2013-10-09 | 深圳市穗榕同轴电缆科技有限公司 | High-transmission-rate semi-flexible coaxial cable and method for manufacturing high-transmission-rate semi-flexible coaxial cable |
| CN203760217U (en) * | 2013-12-27 | 2014-08-06 | 江苏帝华线缆有限公司 | Special coaxial cable for high-speed rail |
| CN205069217U (en) * | 2015-09-22 | 2016-03-02 | 浙江万马集团特种电子电缆有限公司 | Two type CATV coaxial cable that glue of high shielding of resistant whipping |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233001A (en) * | 2019-06-21 | 2019-09-13 | 杭州三元电缆有限公司 | A kind of RG-6 copper clad steel coaxial cable and preparation method thereof |
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