CN104966563B - Ultra-low loss is high temperature resistant low intermodulation cable and preparation technology thereof - Google Patents
Ultra-low loss is high temperature resistant low intermodulation cable and preparation technology thereof Download PDFInfo
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- CN104966563B CN104966563B CN201510443313.9A CN201510443313A CN104966563B CN 104966563 B CN104966563 B CN 104966563B CN 201510443313 A CN201510443313 A CN 201510443313A CN 104966563 B CN104966563 B CN 104966563B
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Abstract
The present invention relates to the high temperature resistant low intermodulation cable of a kind of ultra-low loss, belong to the technical field of coaxial cable. Ultra-low loss of the present invention is high temperature resistant low intermodulation cable is coaxial configuration; Described cable is followed successively by inner wire, insulating barrier, the vertical covering of Copper Foil, copper braid, tin coating from the inside to the outside, and restrictive coating. Ultra-low loss of the present invention is high temperature resistant, and low intermodulation cable uses the vertical bag of bare copper strip, not only corrosion resistance is good, and improved shielding; The good conductance of naked copper that can remain intact, thus greatly reduce the loss of cable.
Description
Technical field
The present invention relates to the technical field of coaxial cable, more particularly, the present invention relates to a kind of ultra-low loss high temperature resistantLow intermodulation cable and preparation technology thereof.
Background technology
High-temperature cable is the high performance cable that a kind of special material is made, and is applied to the communications field, particularly extensive useIn 4G antenna, but PTFE properties of materials and processing technology (real core is pushed, do not foamed) cause this series products loss entiretyGreatly. For this reason, in the prior art, for reaching higher shielding properties, count has reached more than 99.5%, and need to soakTin, to ensure Stability Analysis of Structures, but still exists aperture to cause the leakage of signal; In addition, the conductance of tin is than the conductance of naked copper ratioPoor, cause cable loss greatly to increase; Meticulous because of cable, conventional longitudinal covering model tool cannot be realized smooth and coated closely, beatsRoll over, turn over the quality problems such as band.
Summary of the invention
In order to solve the technical problem existing in prior art, the object of the present invention is to provide the resistance to height of a kind of ultra-low lossThe low intermodulation cable of temperature.
In order to realize foregoing invention object of the present invention, the invention provides following technical scheme:
The high temperature resistant low intermodulation cable of a kind of ultra-low loss, is coaxial configuration, it is characterized in that: described cable is complied with from the inside to the outsideInferior is inner wire, insulating barrier, the vertical covering of Copper Foil, copper braid, tin coating, and restrictive coating.
Wherein, the thickness of the vertical covering of described Copper Foil is 0.03～0.15mm. When the thickness of the vertical covering of described Copper Foil reachesWhen 0.03mm is above, can reach shielding requirements, and for the consideration of economy, the thickness of the vertical covering of described Copper Foil is defined asMore than 0.15mm.
Wherein, described insulating barrier is polyalkene foaming insulating barrier.
Wherein, described Copper Foil is formed with passivation layer through Passivation Treatment; Be 30 as the thickness of described passivation layer preferably～100 dusts.
Wherein, the passivating solution of described Passivation Treatment is by BTA, the 0.05～0.15wt% of 0.05～0.30wt%HOSu NHS, the ethanedioic acid of 0.10～0.20wt%, and the water of surplus composition.
Wherein, the temperature of Passivation Treatment is 60～80 DEG C, and the processing time is 4～20 seconds, is preferably 5～10 seconds.
Wherein, described tin coating carries out under nitrogen atmosphere, and hot-dip temperature is 270～300 DEG C, is preferably 280～285DEG C; The plating solution of hot-dip is: the Ge of 0.05～0.50wt%, the Ni of 0.15～0.50wt%, and the Sn of surplus. This tin coating withConventional pure tin coating is compared, and not only can improve the surface uniformity of coating, and can prevent at high temperature oxygen of tin coatingChange, also can prevent that it from powder phenomenon-tion occurring at low temperatures.
Compared with prior art, the present invention has following beneficial effect:
Ultra-low loss of the present invention is high temperature resistant, and low intermodulation cable uses the vertical bag of bare copper strip, not only corrosion resistance is good, and improvesShielding; The good conductance of naked copper that can remain intact, thus greatly reduce the loss of cable.
Brief description of the drawings
Fig. 1 is the cross sectional representation of the high temperature resistant low intermodulation cable of ultra-low loss of the present invention.
Detailed description of the invention
As shown in Figure 1, the high temperature resistant low intermodulation cable of ultra-low loss described in this detailed description of the invention, is included as coaxial knotStructure, described cable is followed successively by inner wire 1, insulating barrier 2, the vertical covering 3 of Copper Foil, copper braid 4, tin coating 5 from the inside to the outside, and sheathLayer 6. In the present embodiment, described inner wire is fine copper, and as preferably selecting silver-plated copper, the diameter of described copper is according to realityBorder need can be 0.8～1.5mm not etc.; Described insulating barrier is polyalkene foaming insulating barrier; The vertical covering of described Copper Foil adopts " 6 "The outer surface that Copper Foil is wrapped in insulating barrier completely by font longitudinal covering model tool forms the vertical covering of Copper Foil, the thickness of the vertical covering of described Copper FoilBe 0.03～0.15mm. Then, form copper braid outward at the vertical covering of Copper Foil, then in tin immersion furnace, at inert atmosphere orUnder reducing atmosphere, carry out wicking and process formation tin coating, finally form restrictive coating, described restrictive coating at the outer surface of tin coatingBe preferably low smoke and zero halogen pe sheath. The high temperature resistant low intermodulation cable of ultra-low loss of the present embodiment uses the vertical bag of bare copper strip, realExisting all standing, increases shielding properties; The good conductance of naked copper that can remain intact, thus greatly reduce the damage to cableConsumption, and vertical job contract skill has realized complete, level and smooth, the closely covering on bare copper strip surface accurately; Be specially adapted to 4G communication dayLine cable.
Embodiment 1About the vertical covering of Copper Foil
In the present embodiment, the Copper Foil that the vertical covering of described Copper Foil uses is through Passivation Treatment, and it not only provides excellentCorrosion resistance, and there is good anti-color changeable effect, can keep the metallic luster of copper, and not affect tinning work thereafterSkill.
In the present embodiment, the passivating solution of use is by BTA, the 0.05～0.15wt% of 0.05～0.30wt%HOSu NHS, the ethanedioic acid of 0.10～0.20wt%, and the water of surplus composition. The temperature of Passivation Treatment is 60～80DEG C, the processing time is 4～20 seconds. Table 1 has provided several non-limiting instantiations and comparative example.
Table 1
In table 1, the temperature of Passivation Treatment is 65 DEG C, and the processing time is 10 seconds. Wherein, "/" represents not add this groupPoint, EDTA represents ethylenediamine tetra-acetic acid.
It is in the insulating box of 80 DEG C that the Copper Foil of processing through table 1 is positioned over to temperature, measures it through 10d, 20d and 30dGain in weight, and observe its surface condition, its result is as shown in table 2.
Table 2 unit is mg/dm2
| Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| 10d | 1.6 | 1.5 | 1.5 | 1.2 | 15 | 20 | 12 | 8.0 |
| 20d | 2.0 | 1.6 | 1.8 | 1.6 | 32 | 38 | 20 | 10.0 |
| 30d | 2.0 | 1.6 | 1.8 | 1.6 | 39 | 50 | 28 | 10.8 |
| Apparent | Without variable color | Without variable color | Without variable color | Without variable color | Variable color | Variable color | Variable color | Light discolouration |
Embodiment 2About hot dipped tinning
Conventional immersion tin adopts pure tin or leypewter conventionally. But pure tin immersion plating layer at high temperature corrosion resistance is poor,And under sub-zero low temperature environment the caking property variation of itself and copper, easily come off, even can there is powder phenomenon-tion. AndFor Environmental Factors, plumbous use is restricted even to be forbidden. In the present embodiment, by add a small amount of Ge in tin simultaneouslyNot only can prevent efflorescence or the coating shedding phenomenon under low temperature with Ni, and can also improve the uniformity of coating, also carry in additionHigh its resistance to elevated temperatures. Specifically, tinning operates in tin immersion furnace, for anti-oxidation, under condition of nitrogen gas, carry out,Hot-dip temperature is controlled at 280～285 DEG C; The plating solution of hot-dip is: Ge, the 0.15～0.50wt%'s of 0.05～0.50wt%Ni, and the Sn of surplus; The thickness of tin coating is 10 μ m.
Embodiment 3
In the present invention, use the insulating sheath of Halogen, for ensure its stability under high temperature and cryogenic conditions andDurability. The present invention has adopted the pe sheath of ABS resin modification. The raw material of described sheath consists of in the present embodiment:The styrene of the ABS resin of 8.0～10.0wt%, the Et-MAH-acrylic resin of 3.0～5.0wt%, 2.5～3.5wt%-The calcium carbonate of butadiene-copolymer-maleic anhydride, 12～15wt%, the antimony oxide of 2.0～2.5wt%, 1.0～The cyanacrylate of the magnesia of 1.5wt%, the acetoxylsilane of 0.5～1.0wt%, 0.5～1.0wt%,The lubricant of 1.5～2.0wt%, the antioxidant of 0.10～0.30wt%, and the high density polyethylene (HDPE) of surplus. In the present embodimentBy adding a small amount of cyanacrylate and acetoxylsilane, ensure that the compatible of polyethylene and ABS givenThe mechanical performance that it is good, and high and low temperature resistance. Said components is added in batch mixer and is uniformly mixed according to proportioning,Then the material after mixing is sent into plasticizing in the double screw extruder of forced feed system and is extruded, carry out granulation,Wherein the each district of screw rod temperature is 120～150 DEG C. As nonrestrictive example, described acetoxylsilane can be selected methylTriacetoxysilane.
Table 3 has provided several non-limiting instantiations and comparative example.
Table 3 (unit is wt%)
| Example 5 | Example 6 | Example 7 | Comparative example 5 | Comparative example 6 | |
| ABS resin | 8.0 | 9.0 | 10.0 | 9.0 | 9.0 |
| Et-MAH-acrylic resin | 3.0 | 4.0 | 5.0 | 4.0 | 4.0 |
| Styrene-butadiene-copolymer-maleic anhydride | 3.5 | 3.0 | 2.5 | 3.0 | 3.0 |
| Calcium carbonate | 13.0 | 15.0 | 15.0 | 15.0 | 15.0 |
| Antimony oxide | 2.0 | 2.5 | 2.5 | 2.5 | 2.5 3 --> |
| Magnesia | 1.5 | 1.0 | 1.0 | 1.0 | 1.0 |
| Methyl triacetoxysilane | 0.5 | 0.8 | 1.0 | / | / |
| γ aminopropyltriethoxy silane | / | / | / | 0.8 | / |
| Cyanacrylate | 1.0 | 0.8 | 0.8 | 0.8 | 0.8 |
| Dolomol | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 |
| Tissuemat E | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Antioxidant 1010 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| High density polyethylene (HDPE) | Surplus | Surplus | Surplus | Surplus | Surplus |
Be strange beautiful PA709S at the trade mark of ABS resin described in table 3. The trade mark of high density polyethylene (HDPE) is Sinopec's thighThe 1600J of part Co., Ltd.
The performance detection data of insulating sheath material prepared by the each example of table 3 and comparative example is as shown in table 4.
Table 4
| Example 5 | Example 6 | Example 7 | Comparative example 5 | Comparative example 6 | |
| Hot strength, MPa | 13.2 | 14.8 | 15.1 | 14.8 | 14.2 |
| Elongation at break, % | 280 | 265 | 255 | 260 | 270 |
| Aging after-drawing intensity, MPa | 12.5 | 15.1 | 15.3 | 11.2 | 11.8 |
| Aging rear elongation at break, % | 250 | 235 | 240 | 210 | 220 |
| Impact brittle temperature, DEG C | -50 | -50 | -50 | -30 | -30 |
Embodiment 4
The present embodiment has exemplarily provided a kind of non-limiting cable example that adopts the solution of the present invention to prepare. ?In the present embodiment, inner wire adopts the bare copper wire that diameter is 1.05mm; Insulating barrier adopts polyethylene foam layer, and its external diameter is3.15mm; The thickness of the vertical covering of Copper Foil is 0.05mm, and Copper Foil has passed through the Passivation Treatment described in embodiment 1; Copper braid,Count is 99.0%, then adopts the method for embodiment 2 to carry out tinning, and the external diameter of integral tin copper braiding is3.55mm; Sheath is Halogen sheath prepared by embodiment 3, and external diameter is 4.50mm. In the time that signal frequency is 0.01～3.0GHz, shouldThe decay of cable is between 0.05～0.20dB/m, and transmission delay is less than 1.20ns/m.
For the ordinary skill in the art, be to be understood that can do not depart from scope disclosed by the invention withIn, can adopt to be equal to and replace or equivalent transformation form enforcement above-described embodiment. Protection scope of the present invention is not limited to specificallyThe specific embodiment of embodiment part, as long as no the embodiment that departs from invention essence, is all interpreted as having dropped on thisWithin the protection domain of bright requirement.
Claims (7)
1. the high temperature resistant low intermodulation cable of ultra-low loss, is coaxial configuration, it is characterized in that: described cable from the inside to the outside successivelyFor inner wire, insulating barrier, the vertical covering of Copper Foil, copper braid, tin coating, and restrictive coating; Described Copper Foil forms through Passivation TreatmentThere is passivation layer; The passivating solution of described Passivation Treatment is by the BTA of 0.05～0.30wt%, the hydroxyl of 0.05～0.15wt%The ethanedioic acid of base succinimide, 0.10～0.20wt%, and the water of surplus composition.
2. the high temperature resistant low intermodulation cable of ultra-low loss according to claim 1, is characterized in that: described insulating barrier is polyeneHydrocarbon foaming insulation layer.
3. the high temperature resistant low intermodulation cable of ultra-low loss according to claim 1, is characterized in that: the vertical covering of described Copper FoilThickness is 0.03～0.15mm.
4. the high temperature resistant low intermodulation cable of ultra-low loss according to claim 1, is characterized in that: the thickness of described passivation layerBe 30～100 dusts.
5. the high temperature resistant low intermodulation cable of ultra-low loss according to claim 1, is characterized in that: the temperature of Passivation Treatment is60～80 DEG C, the processing time is 4～20 seconds.
6. the high temperature resistant low intermodulation cable of ultra-low loss according to claim 1, is characterized in that: described tin coating is at nitrogenUnder atmosphere, carry out, hot-dip temperature is 270～300 DEG C.
7. the high temperature resistant low intermodulation cable of ultra-low loss according to claim 6, is characterized in that: the plating solution of hot-dip is:The Ge of 0.05～0.50wt%, the Ni of 0.15～0.50wt%, and the Sn of surplus.
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| CN200969252Y (en) * | 2006-11-21 | 2007-10-31 | 谢榕辉 | Fluorine foaming coaxial cable |
| CN101783208A (en) * | 2010-03-20 | 2010-07-21 | 深圳市穗榕同轴电缆科技有限公司 | Television coaxial cable concealed in wall |
| CN201681660U (en) * | 2010-03-26 | 2010-12-22 | 陈忠全 | Communication cable |
| JP2014225448A (en) * | 2013-04-26 | 2014-12-04 | 矢崎総業株式会社 | Coaxial cable and wire harness using the same |
| CN104252903A (en) * | 2013-06-26 | 2014-12-31 | 安徽联嘉祥特种电缆有限公司 | Shielding cable and manufacturing method thereof |
| CN204834124U (en) * | 2015-07-24 | 2015-12-02 | 江苏亨鑫科技有限公司 | Low intermodulation cable that ultralow loss is high temperature resistant |
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2015
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200969252Y (en) * | 2006-11-21 | 2007-10-31 | 谢榕辉 | Fluorine foaming coaxial cable |
| CN101783208A (en) * | 2010-03-20 | 2010-07-21 | 深圳市穗榕同轴电缆科技有限公司 | Television coaxial cable concealed in wall |
| CN201681660U (en) * | 2010-03-26 | 2010-12-22 | 陈忠全 | Communication cable |
| JP2014225448A (en) * | 2013-04-26 | 2014-12-04 | 矢崎総業株式会社 | Coaxial cable and wire harness using the same |
| CN104252903A (en) * | 2013-06-26 | 2014-12-31 | 安徽联嘉祥特种电缆有限公司 | Shielding cable and manufacturing method thereof |
| CN204834124U (en) * | 2015-07-24 | 2015-12-02 | 江苏亨鑫科技有限公司 | Low intermodulation cable that ultralow loss is high temperature resistant |
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