CN105244579B - A kind of logical elasticity of credit high-temperature-resisting coaxial cable and its preparation method of inner wire and screen layer - Google Patents
A kind of logical elasticity of credit high-temperature-resisting coaxial cable and its preparation method of inner wire and screen layer Download PDFInfo
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- CN105244579B CN105244579B CN201510448304.9A CN201510448304A CN105244579B CN 105244579 B CN105244579 B CN 105244579B CN 201510448304 A CN201510448304 A CN 201510448304A CN 105244579 B CN105244579 B CN 105244579B
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Abstract
A kind of logical elasticity of credit high-temperature-resisting coaxial cable, it is characterised in that radial distribution is successively from inside to outside：Inner wire (1), insulating barrier (2), inner wire screen layer (3), outer conductor screen layer (4) and restrictive coating (5)；Insulating barrier (2) outer surface serves as the internal shield (3) of outer conductor by the method introducing layer of metal copper coating of electroless copper, and outer conductor screen layer (4) is that tinned wird weaves overall wicking layer.This logical elasticity of credit high-temperature-resisting coaxial cable meets and is better than the performance requirements of high-temperature-resisting coaxial cable, can be widely applied to radar communication high band connecting line field.
Description
Technical field
The present invention relates to a kind of communication coaxial cable, it is characterized in that a kind of logical elasticity of credit high-temperature-resisting coaxial cable and its
The preparation method of inner wire and screen layer, radar communication high band connecting line field is mainly used in, belongs to communication with coaxially
Radio-frequency cable technical field.
Background technology
Modern communication high speed development, information carrying capacity, transmission rate and communication frequency greatly improve, and disclosure satisfy that the modern times
Communication security and quality, there is the high-end radio frequency coaxial-cable of property requirement, for radar communication high band connecting line
Gradually attract attention, structure and the material innovation of cable are the key points for meeting high band information transfer.Develop with high temperature resistant,
Low attenuation loss, the stable phase coaxial radio frequency cable of advantages of good shielding performance are one of trend of current high-end development communication technologies.
Before the present invention develops, domestic existing high temperature resistant coaxial radio frequency cable product mainly has half soft series, semihard system
Row and softness series, its primary structure generally have silver-coated copper wire or copper core inner wire, solid-core polyfluortetraethyleinsulating insulating layer, led outside
The silver-plated copper strap wire of body wrapped (or silver-coated copper wire braiding or tinned wird weave overall wicking) and sheath outer layer composition.Although
The appearance of these constructions of cable effectively raises the antijamming capability of high-frequency-band data transmission demand and cable, can compared with
High temperature uses, but wherein comes with some shortcomings：Elastic strength is poor, and tensile strength is small, this will cause cable use range by
Limit, is easily influenceed by adverse circumstances.In actual applications, easily there is expendable influence of crust deformation signal transmission.Modern communication pair
In the elasticity of high temperature resistant communication cable and the requirement also more and more higher of tensile strength, high temperature resistant, the shielding of communication transmission media
Energy, phase stabilization performance turn into the important technology index that modern communication uses.Material by adjusting cable forms to be set with optimization
Count structure and obtain excellent communication performance, so as to expand the use range of high temperature-resistant cable product.
The content of the invention
It is an object of the invention to provide a kind of logical elasticity of credit high-temperature-resisting coaxial cable and its inner wire and screen layer
Preparation method, the contradictory problems of the high shielding and flexibility in high-temperature-resisting coaxial cable product are overcome, by polytetrafluoro
The method of ethene surface of insulating layer electroless copper, one layer of very thin compact metal copper plating is introduced in teflon insulation layer surface
Internal shield of the layer as outer conductor, and the outer layer of outer conductor then weaves overall wicking technology using tinned wird.Outer conductor is adopted
The cable of silver-copper plated steel clad cable architecture is used with said structure and inner wire, mitigates product weight, there is good bendability
Can and elasticity recover deformability, mechanical performance is apparently higher than semi-flexible cable, and shield effectiveness is close to semihard cable, so as to
It ensure that the phase stability and information transmission safety energy in signals transmission.This external insulation layer and external sheath layer all use
Fluoroplastics material, the resistance to elevated temperatures of product is good, extends the application of cable, and the product contrast silver-plated copper of this structure is compiled
With wrapped series of products, have the characteristics that in light weight, cost is low, frequency transmission performance is high and economic benefit is good.
The technical scheme is that：
A kind of logical elasticity of credit high-temperature-resisting coaxial cable, radial distribution is successively from inside to outside：Inner wire (1), insulating barrier
(2), inner wire screen layer (3), outer conductor screen layer (4) and restrictive coating (5)；Insulating barrier (2) outer surface passes through chemical plating
The method of copper introduces the internal shield (3) that layer of metal copper coating serves as outer conductor, and outer conductor screen layer (4) is compiled for tinned wird
Knit overall wicking layer.
The inner wire (1) is silver-copper plated steel clad wire.
The insulating barrier (2) is solid-core polyfluortetraethyleinsulating insulating material, the surface chemistry containing polytetrafluoroethylene (PTFE) cored wire after sintering
Roughening, sensitization, activation, electroless copper and dry kinds of processes material processing method.
The chemical coarsening process is：The polytetrafluoroethylene (PTFE) cored wire that pushing has sintered is soaked by sodium-naphthalin treatment solution
Alveolation roughening treatment, the sodium-naphthalin treatment solution into being grouped into 100~150g/L naphthalenes, the tetrahydrofuran of 15~25g/L sodium
Solution, the temperature range for controlling solution are 18~25 DEG C, and the soak time of cored wire is 1~10min, and clear water rinses.
The process of the sensitization is：Cored wire after chemistry is roughened passes through 2~12g/L stannous chloride, 3~16g/L
Hydrochloric acid solution carry out sensitized treatment, temperature is 18~25 DEG C, and sensitization time be 1~15min, and clear water soaks.
A kind of preparation method of the inner wire screen layer of logical elasticity of credit high-temperature-resisting coaxial cable, it is characterised in that the work
The process of change is：Palladium bichloride by the cored wire after sensitized treatment by 0.5~1.5g/L, 1~5g/L hydrochloric acid solution are carried out
Activation process, temperature are 18~25 DEG C, and soak time is 1~15min, and clear water soaks.
A kind of preparation method of the inner wire screen layer of logical elasticity of credit high-temperature-resisting coaxial cable, it is characterised in that describedization
Learning copper-plated process is：Copper sulphate by the cored wire after activation process by 5~15g/L, 0.5~1.5g/L nickel sulfate,
The mixed solution of 50~100g/L sodium hypophosphite, 1~10g/L sodium citrates and 10~50g/L boric acid, the mixed solution
PH value control between 7~10, temperature control at 40~80 DEG C, according to copper layer thickness control the copper facing time, clear water rinse.
Metal copper coating is introduced by the method for electroless copper pushing the teflon insulation layer outer surface after sintering
As outer conductor internal shield, its technical basis is：By entering to the surface of the polytetrafluoroethylene wire core insulation layer after sintering
The roughening of row chemistry, sensitization, activation, electroless copper and drying process, can introduce one layer of very thin fine and close metal copper coating, have
There is good shield effectiveness, its mechanical bend is functional, has excellent elasticity and softness, meets machine after cable bend
Tool phase stabilization.Using metal copper coating, fine and close and coating is very thin, can form preferable shield effectiveness, and contrast is silver-plated with metal
The wrapped shield effectiveness of copper braid will get well, and product weight is light, cost is low, additionally due to coating and ptfe surface is tight
Close combination, make the bending property of product and mechanical performance it is more excellent, elasticity it is good, after bending high band transmit phase it is more steady
It is fixed.
Ptfe surface is smooth, and property is stable, thus needs some chemical method of roughening to handle the increase of its surface
Roughness, then be sensitized, activated and reduction treatment, its general principle is first to produce one layer in teflon insulation layer surface
Noble metal active site layer with continuous catalysis ability, to ensure that electroless copper continuous uniform is carried out, ensure that plated layer compact is equal
The continuous controllable, coat of metal of even, thickness be tightly combined with insulation top layer it is consistent, it is good to obtain cable electrical performance and mechanical performance
It is good, expand its application in elastic high-temperature-resisting coaxial cable.
The teflon insulation layer surface introduces layer of metal copper coating by the method for electroless copper and serves as outer lead
The internal shield (3) of body, replacement traditional copper braid is wrapped to be used as outer conductor internal shield.The production technology bag of the inner shield (3)
Include：The surface chemistry of polytetrafluoroethylene (PTFE) cored wire is roughened, at sensitization, activation, electroless copper and dry kinds of processes material after sintering
Reason method.It is characterized in that the chemical coarsening process, which is the polytetrafluoroethylene (PTFE) cored wire for having sintered pushing, passes through sodium~naphthalene processing
Liquid soak chemical roughening treatment, the sodium~naphthalin treatment solution into being grouped into 100~150g/L naphthalenes, 15~25g/L sodium
Tetrahydrofuran solution, temperature be 18~25 DEG C, soak time be 1~10min, immersion completion after be rinsed using clear water
Totally；The activation process is：Cored wire after chemistry is roughened passes through 2~12g/L stannous chloride, 3~16g/L hydrochloric acid
Solution carries out sensitized treatment, and temperature is 18~25 DEG C, and sensitization time is 1~15min, and 1~5min is then soaked in clear water；Institute
Stating activation process is：Palladium bichloride by the cored wire after sensitized treatment by 0.5~1.5g/L, 1~5g/L hydrochloric acid solution enter
Row activation process, temperature are 18~25 DEG C, and soak time is 1~15min, and 1~5min is then soaked in clear water；The copper facing
Process is：Copper sulphate by the cored wire after activation process by 5~15g/L, 0.5~1.5g/L nickel sulfate, 50~100g/
The mixed solution of L sodium hypophosphite, 1~10g/L sodium citrates and 10~50g/L boric acid, the pH value control of the mixed solution
System between 7~10, temperature control at 40~80 DEG C, according to the copper layer thickness of different model control copper-plated time 10~
Between 60min, 1~5min is then cleaned in the clear water of flowing；The drying process of the copper plate is：Chemical plating will be completed
The cored wire of copper it is dried processing using 60~80 DEG C of compressed airs after dried.
The beneficial effects of the invention are as follows：
A kind of logical elasticity of credit high-temperature-resisting coaxial cable, inner wire are ensureing the same of electric property using silver-copper plated steel clad wire
When have that preferable mechanics elasticity, intensity are big, it is strong to recover deformability, it is flexible, flexible, can effective expansion cable application
Scope；Using polytetrafluoroethylene (PTFE) (PTFE) insulating materials, there is relatively low dielectric constant and good resistance to elevated temperatures, technique into
It is ripe, meet the insulation electrical performance of cable；Outer conductor using the metal copper coating of ptfe surface as internal shield,
Screen layer is fine and close and very thin thickness, mechanical bend excellent performance, shield effectiveness are good, and outer layer weaves overall wicking using tinned wird
Technology make it that the flexibility of product is fabulous, and mechanical phase stability is strong in BENDING PROCESS, has stronger interference free performance.Adopt
External sheath layer is done with FEP materials, has that processing characteristics is good, and resistance to elevated temperatures is strong, and temperature limit is wide, heat resistance and corrosion-resistant
The characteristics of property and moistureproof and waterproof are strong, can effectively ensure that the application of cable in different environments is good.
Outer conductor internal shield in the construction of cable using ptfe surface copper coating introduce one layer it is very thin
Metal copper coating, this method are different from that traditional copper braid is wrapped, and metallic copper thickness of coating is very thin, the close consistent, copper of its coating
Technique dosage is less, improves the shield effectiveness of cable on the contrary, contrasts that its mechanical performance is more preferable, resistance to bend(ing) energy with product before
Get a promotion, good flexibility and elasticity, the laying of its cable is faster, using safer, it is ensured that during cable work
Mechanical phase is stable.The elastic high-temperature-resisting coaxial cable of the method production not only reduces the cost of raw material copper, improves electricity
The electric property of cable, also with intensity it is big, recover deformability it is strong, it is flexible, flexible, in light weight, be easily installed laying etc.
Advantage, it can effectively extend the application of high temperature resistant coaxial radio frequency cable.
It is mainly reflected in the following aspects：
1st, elasticity is good：Silver-copper plated steel clad line strength is big, the machinery of soft good bending property, in addition metal outer conductor screen layer
Performance and bending property are preferable, so cable recovery deformability is strong, elasticity is good.
2nd, high temperature resistant：It is reachable using insulation of the fluoroplastics as cable and sheath material, high temperature resistant, operating ambient temperature
260 DEG C, the dielectric constant and dielectric loss to insulate at high temperature is small, and temperature change does not influence products application.
3rd, phase stability is good：Using copper plate as internal shield, shield effectiveness is good, and mechanical bend excellent performance,
In addition the overall wicking technology softness of tinned wird braiding is good, and mechanical phase stability is strong in BENDING PROCESS, has stronger
Interference free performance.
4th, it is in light weight：Weaving overall wicking technology using ptfe surface copper plate and tinned wird has cable
Weight is also reduced while having high shielding properties, extends the application of high-temperature-resisting coaxial cable.
5th, cost is low：Weaving overall wicking technology using ptfe surface copper plate and tinned wird has cable
Have and process for copper dosage also reduced while high shielding properties, reduce the product cost of raw material, improve cable flexibility and
Easy laying installation, improve the high band communication performance of product.
Present invention optimizes the composition of traditional high temperature-resistant cable product structure, is served as using ptfe surface copper facing interior
The method of screen layer, the shielding properties of outer conductor is improved, enhance the bending property and elasticity of product, it is ensured that information transfer
Phase stability, and material cost is reduced, make the design structure of high temperature resistant radio-frequency cable more excellent, the applying frequency of product is more
Height, application are broader.
The present invention is further illustrated for a specific embodiment after combined process optimization, example below, embodiment
Detailed description more fully understands the present invention only to assist in people, does not represent whole technical schemes under present inventive concept, because
This design that should not be construed as to the total technical scheme of the present invention limits, in some technical staff, without departing from structure of the present invention
The unsubstantiality change of think of, simply change or replace with the technical characteristic with same or similar technique effect, the category present invention
Protection domain.
Brief description of the drawings
A kind of logical elasticity of credit high-temperature-resisting coaxial cable structure Longitudinal cross section schematic that Fig. 1 present invention designs
A kind of logical elasticity of credit high-temperature-resisting coaxial cable feature cross-section schematic diagram that Fig. 2 present invention designs
Embodiment：
The invention will be further described below in conjunction with the accompanying drawings：
A kind of logical elasticity of credit high-temperature-resisting coaxial cable, it is characterised in that radial distribution is successively from inside to outside：Inner wire
(1), insulating barrier (2), inner wire screen layer (3), outer conductor screen layer (4) and restrictive coating (5)；Insulating barrier (2) outer surface
The internal shield (3) of outer conductor is served as by the method introducing layer of metal copper coating of electroless copper, outer conductor screen layer (4) is
Tinned wird weaves overall wicking layer.
A kind of preparation method of the inner wire screen layer of logical elasticity of credit high-temperature-resisting coaxial cable, it is characterised in that including with
Lower step：Surface chemistry roughening, sensitization, activation, electroless copper and the dry kinds of processes material of polytetrafluoroethylene (PTFE) cored wire after sintering
Expect processing method.
The chemical coarsening process is：The polytetrafluoroethylene (PTFE) cored wire that pushing has sintered is soaked by sodium~naphthalin treatment solution
Alveolation roughening treatment, the sodium~naphthalin treatment solution into being grouped into 120g/L naphthalenes, the tetrahydrofuran solution of 20g/L sodium, temperature
Spend for 18~25 DEG C, soak time 10min, immersion is rinsed totally after completing using clear water.
The activation process is：Stannous chloride by the cored wire after chemistry roughening by 2~12g/L, 3~16g/L's
Hydrochloric acid solution carry out sensitized treatment, temperature be 18~25 DEG C, sensitization time be 1~15min, then in clear water soak 1~
5min。
The activation process is：Palladium bichloride by the cored wire after sensitized treatment by 0.5~1.5g/L, 1~5g/L's
Hydrochloric acid solution carry out activation process, temperature be 18~25 DEG C, soak time be 1~15min, then in clear water soak 1~
5min。
The copper facing process is：Copper sulphate by the cored wire after activation process by 5~15g/L, 0.5~1.5g/L's
The mixed solution of nickel sulfate, 50~100g/L sodium hypophosphite, 1~10g/L sodium citrates and 10~50g/L boric acid, it is described
The pH value of mixed solution is controlled between 7~10, and temperature control is controlled according to the copper layer thickness of different model and plated at 40~80 DEG C
The time of copper between 10~60min, then cleans 1~5min in the clear water of flowing.
The drying process of the copper plate is：The cored wire of electroless copper will have been completed using 60~80 after dried
DEG C compressed air it is dried processing.
Check core outer surface copper plate without abscess, crowfoot cracks, come off, the phenomenon of defect and out-of-flatness, test shows coating
For 0.01mm, plated layer compact uniform ground, after completing subsequent handling test show that the cable has good communication performance, can be wide
It is general to apply in the high band communications field.
Thickness, flatness and the density of internal shield (3) are most important to the structure of this kind of high temperature resistant communication cable.It can tie
The requirements such as cable core structure, model, use environment and communication performance adjustment correlated condition parameter is closed to realize the work to internal shield
Skill controls.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to the structure of the present invention
Think and scope is defined, under the premise of design concept of the present invention is not departed from, ordinary skill technical staff is to this hair in this area
The all variations and modifications that bright technical scheme is made, protection scope of the present invention, the claimed skill of the present invention all should be fallen into
Art content has all been recorded in detail in the claims.
Claims (2)
1. a kind of logical elasticity of credit high-temperature-resisting coaxial cable, it is characterised in that radial distribution is successively from inside to outside：Inner wire
(1), insulating barrier (2), inner wire screen layer (3), outer conductor screen layer (4) and restrictive coating (5)；Insulating barrier (2) outer surface
Layer of metal copper coating is introduced by the method for electroless copper and serves as inner wire screen layer (3), outer conductor screen layer (4) is tin plating
Copper wire woven entirety wicking layer；The insulating barrier (2) is solid-core polyfluortetraethyleinsulating insulating material, containing polytetrafluoroethylene (PTFE) cored wire after sintering
Surface chemistry roughening, sensitization, activation, the processing method of electroless copper and drying；Wherein：
The chemical coarsening process is：The polytetrafluoroethylene (PTFE) cored wire that pushing has sintered is subjected to immersion by sodium-naphthalin treatment solution
Learn roughening treatment, the sodium-naphthalin treatment solution into 100~150g/L naphthalenes are grouped into, the tetrahydrofuran of 15~25g/L sodium is molten
Liquid, the temperature range for controlling solution are 18~25 DEG C, and the soak time of cored wire is 1~10 min, and clear water rinses；
The process of the sensitization is：Cored wire after chemistry is roughened passes through 2~12g/L stannous chloride, 3~16g/L salt
Acid solution carries out sensitized treatment, and temperature is 18~25 DEG C, and sensitization time is 1~15min, and clear water soaks；
The process of the activation is：Palladium bichloride by the cored wire after sensitized treatment by 0.5~1.5g/L, 1~5g/L salt
Acid solution carries out activation process, and temperature is 18~25 DEG C, and soak time is 1~15min, and clear water soaks；
The process of the electroless copper is：Copper sulphate by the cored wire after activation process by 5~15g/L, 0.5~1.5g/L
Nickel sulfate, 50~100g/L sodium hypophosphite, the mixed solution of 1~10g/L sodium citrates and 10~50g/L boric acid,
The pH value of the mixed solution is controlled between 7~10, and temperature control is at 40~80 DEG C, when controlling copper facing according to copper layer thickness
Between, clear water rinses.
A kind of 2. logical elasticity of credit high-temperature-resisting coaxial cable according to claim 1, it is characterised in that the inner wire (1)
For silver-copper plated steel clad wire.
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| CN106299569B (en) * | 2016-08-29 | 2018-10-19 | 江苏俊知技术有限公司 | A kind of waterproofing type radio frequency coaxial-cable and its manufacture craft |
| CN107240743A (en) * | 2017-05-23 | 2017-10-10 | 芜湖航天特种电缆厂股份有限公司 | The overall silver-plated outer conductor coaxial radio frequency cable and preparation method thereof of insulating barrier |
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| EP0322128A2 (en) * | 1987-12-01 | 1989-06-28 | Senstar Corporation | Leaky cables |
| CN201430206Y (en) * | 2009-06-26 | 2010-03-24 | 淮南新光神光纤线缆有限公司 | Polytetrafluoroethylene medium semi-soft coaxial radio frequency cable |
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