Summary of the invention:
The purpose of this invention is to provide a kind of cold-resistant, wear-resisting, soft, anti-salt fog navigation composite cable, compact conformation reduces the weight of laying the space, alleviating emission system, and communication quality is reliable and stable.
Technical scheme of the present invention is following:
Cold-resistant, wear-resisting, soft, anti-salt fog navigation composite cable; Comprise symmetrical cable, holding wire; It is characterized in that: described symmetrical cable is that the holding wire that is provided with different structure outside the center constitutes cable core, and cable core is enclosed with total screen of total lapping layer, metal wire knitted formation, total restrictive coating outward successively.
Described cold-resistant, wear-resisting, soft, anti-salt fog navigation composite cable, it is characterized in that: it is silicon rubber that described total restrictive coating adopts material.
Described cold-resistant, wear-resisting, soft, anti-salt fog navigation composite cable, it is characterized in that: described holding wire adopts the elastic body insulated holding wire of soft PVC, and including sectional area is 8.2mm
2, 2.0mm
2, 1.0mm
2, 0.35mm
2Several kinds of specifications.
Described symmetrical cable adopts---2 * SEFF-78-1-51 fluoroplastic insulation symmetrical cable:
1. conductor: adopt the silver-plated high strength copper alloy line of 19/0.127mm to form;
2. insulation: adopt the polytetrafluoroethylene (PTFE) resin;
3. fill out core: the polytetrafluoroethylene (PTFE) resin;
4. shielding: the silver-coated copper wire braiding, count is not less than 90%.
5. sheath: tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA).
Described holding wire comprises:
A, 3 * 8.2mm
2The elastic body insulated holding wire of soft PVC
1. conductor: adopt 464/0.15mm tin annealed copper wire bundle, stranded forming;
2. insulation: adopt soft PVC elastomer.
B, 3 * 2.0mm
2The elastic body insulated holding wire of soft PVC
1. conductor: adopt 40/0.25mm tin annealed copper wire bundle to close and form;
2. insulation: adopt soft PVC elastomer.
C, 6 * 1.0mm
2The elastic body insulated holding wire of soft PVC
1. conductor: adopt 32/0.2mm tin annealed copper wire bundle to close and form;
2. insulation: adopt soft PVC elastomer.
D, 22 * 0.35mm
2The elastic body insulated holding wire of soft PVC
1. conductor: adopt 20/0.15mm tin annealed copper wire bundle to close and form;
2. insulation: adopt soft PVC elastomer.
E, total lapping layer: adopt the wrapped one deck of non-absorbent material.
F, total screen: adopt the tinned wird braiding, count is not less than 85%.
G, total restrictive coating: adopt silicon rubber, color is a black.
Advantage of the present invention is:
1, fluoroplastic insulation symmetrical cable:
1. conductor: select that the choosing of conductivity and thermal conductivity is good for use, corrosion resistance and non-oxidizability, chemical property is very stable, and tensile strength is not less than 345N/mm
2, elongation at break is not less than 6% silver-plated high strength copper alloy line, and silver thickness has satisfied the conductance height signal transmission is stablized soon greater than 1.5 μ m.
2. insulation: adopt the polytetrafluoroethylene (PTFE) resin, the polyflon excellent properties is that other various plastics are incomparable, along with temperature and frequency change; Dielectric loss angle tangent tg δ, relative dielectric constant ε r and specific insulation change very little; Electrical insulation capability is very excellent in the temperature of broadness and frequency range, and the disruptive field intensity of superelevation is very stable to arcing; Have quite high thermal endurance and resistance to low temperature; Under extremely low temperature, have gratifying mechanical strength and flexibility, outstanding chemical-resistant stability and non-oxidizability and high anti-flammability; This material has satisfied under high frequency, high low temperature and rugged environment, and highly reliable transmission is provided.
3. pair twist: stable for guaranteeing the cable signal transmission, when pair twist, increased by 2 diameter 0.7mm~0.8mm polytetrafluoroethylene filled core, the pair twist pitch is than 11 times~14 times, the requirement of assurance flexibility.
4. shielding: select for use corrosion-resistant and the strong silver-coated copper wire of non-oxidizability; 68 ° of braiding angle nominal values; Count adopts rational count and angle of weave to reduce mutual interference mutually and external disturbance between the loop greater than 90%, improves antijamming capability; It is little that silver coating has decay, corrosion-resistantly guaranteed the communication quality in the adverse circumstances.
5. sheath: selected the tetrafluoroethylene-perfluoroalkyl vinyl ether (PFA) that keeps the whole characteristics of polytetrafluoroethylene for use; Be called Meltability polytetrafluorethyletubular; Satisfy thermal endurance; Corrosion-resistant, fire-retardant, low-friction coefficient, the characteristics that tensile strength is big, processing mode is one of first-selected sheath material in the heatproof environment easily.
2, the elastic body insulated holding wire of soft PVC:
1. conductor: select the tinned wird that solderability is good, resistance to corrosion is strong for use, guarantee communication quality, it is stranded to select for use the very thin silk of filament diameter to carry out, and increases the flexibility of cable.
2. insulation: good insulating, and have fire-retardant, oil resistant, chemical-resistant resistance, the ageing-resistant and extraordinary soft PVC elastomer that has excellent water-resistance, and adopt the processing mode of squash type, not only guarantee the consistency of external diameter, improve dielectric strength simultaneously.
3, with behind the holding wire of several kinds of different sizes and the 2 symmetrical cable strandings, woven solderability tinned wird good, that resistance to corrosion is strong and always shielded, count reaches more than 85%, improves the ability of anti-interference from outside signals.
4, oversheath is selected mechanical strength for use and resistance to wear is high, soft, fire-retardant, cold-resistant, the extraordinary butyronitrile PVC of anti-salt fog compound elastomer, and this material not only softness also is not influenced by the adverse circumstances, and guarantees the communication quality of particular surroundings.
5, increase satellite navigation application service system in the aeronautical and space technology, be matching used cold-resistant, wear-resisting, the anti-salt fog navigation composite cable new varieties of navigation emission system electronics, enlarged user's range of choice.