CN205451827U - Multicore polyimide insulating composite film graphite coating sheath control cable - Google Patents
Multicore polyimide insulating composite film graphite coating sheath control cable Download PDFInfo
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- CN205451827U CN205451827U CN201620186732.9U CN201620186732U CN205451827U CN 205451827 U CN205451827 U CN 205451827U CN 201620186732 U CN201620186732 U CN 201620186732U CN 205451827 U CN205451827 U CN 205451827U
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Abstract
The utility model discloses a multicore polyimide insulating composite film graphite coating sheath control cable, including conductor (1), conductor insulating layers (2), sheath (3), filler (4) and oversheath (5), behind the conductor outsourcing conductor insulating layers again the outsourcing sheath have the filler between the multicore as a core, outsourcing oversheath constitution multi -core control cable behind the multicore stranding, this multicore is for being greater than the three -core, and the conductor is single or many annealing tin -coated copper conductors, is conductor insulating layers the conductor spherical silica that coats outward polyimide insulated paint complex film, sheath are the conductive graphite powder coat, and the filler is restrainted for glass fiber is integrated, and the oversheath is flexible glass fiber woven protective envelope. Conductor diameter is at 0.018mm to 2.1mm, flexible oversheath braiding density is not less than 95%. The utility model discloses an is the control cable that a proof voltage grade is high, the antidetonation is moved, warping strength and temperature resistant 200~+ 300 DEG C weak current control signal transmission cable for aerospace driving system's weak electric signal transmission.
Description
Technical field
This utility model relates to a kind of vulnerabilities scan signal transmission electric wire, particularly relating to multicore polyimide insulative composite membrane electrically conductive graphite powder coating sheath and control cable, this cable is applicable to the vulnerabilities scan signal transmission of Aero-Space electromotor, nuclear power generator group, ship power unit and spacecraft dynamical system.
Background technology
In Spacecraft Launch and running, high temperature and the high temperature of rocket engine fuel generation that atmospheric friction produces must be stood.Can have much at the flexible wire cable of high temperature less than 250 DEG C, the subzero 50 DEG C of use above of low temperature at present, but work in the environment of exceeding this temperature range, cable can be the most aging and lost efficacy.
Silicon rubber insulation can be mainly used at present at the flexible wire cable of high temperature 250 DEG C application.Fig. 1 show the multicore silicon rubber insulating control cable structural representation of prior art, multicore silicon rubber insulating control cable, including: conductor and conductor outsourcing insulation are as a core, outsourcing screen layer after Multi-core cable forming, jacket layer again outside screen layer, wherein: conductor is stranded annealed copper conductor 11, insulating barrier is cross-linked silicone rubber insulating barrier 12, screen layer is the wrapped shielding of metal forming, braid shielded or armouring shielding 13, and restrictive coating is cross-linked silicone rubber restrictive coating 14.The complex manufacturing of silicone rubber insulated wires cable, needs the cross-linking apparatus of specialty just can complete production.Silicone rubber insulated wires cable production cost is high is also its major reason promoted of restriction.
Existing many mineral insulation cables can apply in the hot environment of more than 250 DEG C.But existing mineral insulation cable needs metal canula or porcelain bushing, as shown in Figure 2, this mineral insulation cable is equipped with mineral insulation powder 22, mineral insulation powder 22 such as ceramic powders between pottery (or metal) sleeve pipe 23 of copper conductor 21 and outside.This sleeve pipe extreme hardness but the most flexible, install severely limited.Because produce, install, the factor restriction to casing length such as transport, so mineral insulated cable length is the longest.Further, mineral insulation cable uses ceramic powders as insulant, and ceramic powders is the loosest, and once sleeve pipe loosens breakage, will leak and cause electric wire disabler.But, under some adverse circumstances, as born violent vibrations in Spacecraft Launch and running, the application of existing mineral insulation cable is restricted.
Polyimide foam insulation has been applied for many years in China as enameled wire loop insulant at motor, field transformer.Emerging the quick of China recently as polymer composite technology, polyimide foam insulation the most progressively overcomes the shortcoming that poor processability, elongation at break are low, becomes the favorite of the high-technology field new materials such as Aero-Space.Chinese patent 200710098401.5 discloses a kind of preparing spherical SiO 2/polyimide composite film and preparation method and application, and specifically disclose preparing spherical SiO 2/polyimide composite film preparation method, the particle size range of the microgranule of the preparing spherical SiO 2 wherein used is 0.02-20 micron, and 0.02-0.1 micron is a kind of nanometer grade silica material.This patent of invention utilizes in-situ polymerization technology, spherical silica microgranule and polyimides is combined preparation and has the spherical silica/polyimides composite membrane of corona-resistance property.
Summary of the invention
The purpose of this utility model is to provide a kind of multicore polyimide insulative composite membrane coated with graphite sheath to control cable, this control cable is a proof voltage grade height, anti-vibration, warping strength and heatproof-200～the vulnerabilities scan signal-transmitting cable of+300 DEG C, and the weak electric signal for Aero-Space dynamical system transmits.
In order to realize above-mentioned technical purpose, this utility model adopts the following technical scheme that
A kind of multicore polyimide insulative composite membrane coated with graphite sheath controls cable, including conductor, insulating layer of conductor, implant and oversheath, described control cable also includes sheath, after described conductor outsourcing insulating layer of conductor again outsourcing sheath as a core, after being filled with implant, and Multi-core cable forming between multicore, outsourcing oversheath constitutes multi-core controlled cable；Described multicore is more than three cores, described conductor is annealing tinned copper conductor, and insulating layer of conductor is to be coated with preparing spherical SiO 2-polyimide insulative paint composite membrane outside conductor, and sheath is electrically conductive graphite powder coat, implant is glass fibre collection bunchy, and oversheath is flexible fiberglass-weave oversheath.
Described conductor is single or many stranded annealing tinned copper conductor；Described conductor diameter is at 0.018mm to 2.1mm.
The count of described flexible fiberglass-weave oversheath is not less than 95%；The laying up diameter of described multi-core controlled cable often increases 5mm, and the braiding thickness of flexible fiberglass-weave oversheath is increased by 0.5mm.
This utility model multicore polyimide insulative composite membrane coated with graphite sheath controls cable and uses preparing spherical SiO 2 hybrid polyimide composite to form an insulating barrier with relatively high-tensile and elongation at break on electric wire metallic conductor surface.Polyimide composite film tensile strength is more than 40MPa, and elastic modelling quantity is more than 1.0GPa.The electric wire produced with polyimide composite film has higher proof voltage performance, relative to silicone rubber insulated wires cable, uses the insulating barrier of thinner thickness just can meet or exceed the proof voltage grade of silicone rubber for cable.
Control cable of the present utility model uses electrically conductive graphite powder coating shielding layer structure, improves the performance of polyimides alkaline resistance properties difference.
This utility model multicore polyimide insulative composite membrane coated with graphite sheath control cable has higher heat-resisting ability than the silicone rubber insulated wires cable equally with flexibility.Polyimide composite film electric wire normal working temperature is-200～300 DEG C, higher than the operating temperature range that normal working temperature is-60～250 DEG C of silicone rubber.
Control cable of the present utility model is the weak electric signal dispensing cable of a proof voltage grade height, anti-vibration, warping strength and heatproof-200～+300 DEG C, there is provided vulnerabilities scan signal-transmitting cable for various instrument and meters, living electric apparatus and dynamical system, especially can be used for the weak electric signal transmission of Aero-Space dynamical system.
Accompanying drawing explanation
Fig. 1 is existing multicore silicon rubber insulating control cable structural representation；
Fig. 2 is existing mineral insulation wire structure schematic diagram；
Fig. 3 is that this utility model multicore polyimide insulative composite membrane coated with graphite sheath controls construction of cable schematic diagram.
In figure: 1 conductor, 2 insulating layer of conductor, 3 sheaths, 4 implants, 5 oversheaths；11 stranded annealed copper conductors, 12 cross-linked silicone rubber insulating barriers, the 13 wrapped shieldings of metal forming, braid shielded or armouring shielding, 14 cross-linked silicone rubber restrictive coatings；21 copper conductors, 22 mineral insulation powder, 23 pottery (or metal) sleeve pipes.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Seeing Fig. 3, a kind of multicore polyimide insulative composite membrane coated with graphite sheath controls cable, including conductor 1, insulating layer of conductor 2, sheath 3, implant 4 and oversheath 5；After described conductor 1 outsourcing insulating layer of conductor 2, outsourcing sheath 3, as a core, is filled with implant 4, and after Multi-core cable forming, outsourcing oversheath 5 constitutes multi-core controlled cable between multicore again.Described multicore is more than three cores；Described conductor 1 is annealing tinned copper conductor, insulating layer of conductor 2 is coated with preparing spherical SiO 2-polyimide insulative paint composite membrane for outside conductor 1, sheath 3 is electrically conductive graphite powder coat, and implant 4 is glass fibre collection bunchy, and oversheath 5 is flexible fiberglass-weave oversheath.
Described conductor 1 uses single or many stranded annealing tinned copper conductor, and conductor 1 diameter has good roundness and smoothness on 0.018mm to 2.1mm, conductor 1 surface.
Described insulating layer of conductor 2 uses preparing spherical SiO 2-polyimide insulative paint composite membrane, can make in the single or many stranded copper conductor surface coating of a diameter of 0.018mm to 2.1mm.Along with conductor 1 diameter increases, its composite membrane coating thickness can increase therewith.The conductor composite membrane coating thickness of same cross-sectional area is the thickest, and its proof voltage grade increases the most therewith, and maximum can reach the proof voltage grade of 3.6/6kV.
Insulating layer of conductor 2 uses the polyimide insulative paint coating processes of maturation, by preparing qualified conductor dip-coating in preparing spherical SiO 2-polyimide composite insulated paint, obtains heat cured preparing spherical SiO 2-polyimide insulative composite membrane through high temperature curing process.Described prepare the conductor being integrally formed after qualified conductor includes single conductor, many conductors or many conductor strand.
Preparing spherical SiO 2-polyimide insulative composite membrane has good dielectric properties.The common polyimide insulative paint not using preparing spherical SiO 2 hydridization has good dielectric properties, its dielectric constant is 3.4, although bigger than normal than the dielectric constant 2.3 of polythene material, but it is substantially better than the dielectric constant of the 4 to 6 of tradition polychloroethylene insulation material.And the dielectric constant of preparing spherical SiO 2-polyimide insulative composite membrane is generally less than 3.0, hence it is evident that be better than common polyimide material and the dielectric constant of tradition wire cable insulating material polyvinyl chloride insulation material.The elongation at break of common polyimide material is typically not less than 25% but less than 50%.And it is not less than 60% by the polyimide composite film elongation at break of preparing spherical SiO 2 hydridization is minimum.When nanometer grade silica content in preparing spherical SiO 2-polyimide insulative composite membrane reaches 20%, its elongation at break is not less than 80%, it is possible to meet the normal job requirement of electric wire.
Additionally, polyimides has the highest radiation-resistant property, its thin film is 5 × 109After rad electron irradiation, strength retention is 90%.
Polyimides is self-extinguishing polymer, and rate of being fuming is low, has preferable fire resistance.When breaking out of fire, using the electric wire of the present utility model of polyimide insulative composite membrane not prolong combustion, will not produce high density smog affects personnel escape.
Preparing spherical SiO 2-polyimide insulative composite membrane environment-protecting asepsis, has been used for tableware and medical appliance.
Described sheath 3 is electrically conductive graphite powder coat, electrically conductive graphite powder coat is to utilize the characteristic that graphite quality is soft, granule is fine and smooth, the characteristic high with preparing spherical SiO 2-polyimide insulative composite membrane viscoelasticity combines, and electrically conductive graphite powder coat can be coated on preparing spherical SiO 2-polyimide insulative composite film surface the most securely and not fall off.Electrically conductive graphite powder coat can play good isolation alkaline matter and corrode the effect of preparing spherical SiO 2-polyimide insulative composite membrane, has well help the service life in alkaline environment to extending cable.
Described implant 4 is glass fibre collection bunchy, and glass fibre collection bunchy is filled and is to ensure that multicore cable internal structure is stable, outward appearance rounding and the filling measure taked.This glass fibre integrates bunchy as prior art, and its melted softening temperature is not less than 800 DEG C.This glass fibre collection bunchy not only heat resistance is excellent, and nontoxic fire-retardant good with flexibility.
Described oversheath 5 is flexible fiberglass-weave oversheath.Flexible fiberglass-weave oversheath is to ensure that the key member that cable structure is stable, and the fiberglass braided silk using quality soft is not less than the oversheath of 95% as material, the one layer of density of stranding outer braid at cable.In order to ensure that the cable of different size has stable product structure, it is stipulated that the laying up diameter of cable product often increases 5mm, the braiding thickness of flexible fiberglass-weave oversheath is increased by 0.5mm.The thickness adjusting flexible fiberglass-weave oversheath is mainly carried out by the following two kinds method: 1, select the oversheath of flexible fibreglass silk one layer of different-thickness of braiding of different radical；2, select the oversheath of the flexible fibreglass silk braiding same thickness of identical radical, realize, by the braiding number of plies is increased or decreased, the thickness that oversheath needs.Cable product of the present utility model produces oversheath by multi-layer braided method.
These are only preferred embodiment of the present utility model; it is not intended to limit protection domain of the present utility model; therefore, all any modification, equivalent substitution and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (5)
1. a multicore polyimide insulative composite membrane coated with graphite sheath controls cable, including conductor (1), insulating layer of conductor (2), implant (4) and oversheath (5), it is characterized in that: described control cable also includes sheath (3), after described conductor (1) outsourcing insulating layer of conductor (2) again outsourcing sheath (3) as a core, it is filled with implant (4) between multicore, and after Multi-core cable forming, outsourcing oversheath (5) constitutes multi-core controlled cable；Described multicore is more than three cores, described conductor (1) is annealing tinned copper conductor, insulating layer of conductor (2) is to be coated with preparing spherical SiO 2-polyimide insulative paint composite membrane outside conductor (1), sheath (3) is electrically conductive graphite powder coat, implant (4) is glass fibre collection bunchy, and oversheath (5) is flexible fiberglass-weave oversheath.
Multicore polyimide insulative composite membrane coated with graphite sheath the most according to claim 1 controls cable, it is characterized in that: described conductor (1) is single or many stranded annealing tinned copper conductor.
Multicore polyimide insulative composite membrane coated with graphite sheath the most according to claim 2 controls cable, it is characterized in that: described conductor (1) diameter is at 0.018mm to 2.1mm.
Multicore polyimide insulative composite membrane coated with graphite sheath the most according to claim 1 controls cable, it is characterized in that: the count of described flexible fiberglass-weave oversheath is not less than 95%.
Multicore polyimide insulative composite membrane coated with graphite sheath the most according to claim 4 controls cable, it is characterized in that: the laying up diameter of described multi-core controlled cable often increases 5mm, and the braiding thickness of flexible fiberglass-weave oversheath is increased by 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186732.9U CN205451827U (en) | 2016-03-11 | 2016-03-11 | Multicore polyimide insulating composite film graphite coating sheath control cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186732.9U CN205451827U (en) | 2016-03-11 | 2016-03-11 | Multicore polyimide insulating composite film graphite coating sheath control cable |
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| CN205451827U true CN205451827U (en) | 2016-08-10 |
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| CN201620186732.9U Expired - Fee Related CN205451827U (en) | 2016-03-11 | 2016-03-11 | Multicore polyimide insulating composite film graphite coating sheath control cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109754933A (en) * | 2019-02-02 | 2019-05-14 | 王秀娟 | A kind of high-strength cable and preparation method thereof |
-
2016
- 2016-03-11 CN CN201620186732.9U patent/CN205451827U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109754933A (en) * | 2019-02-02 | 2019-05-14 | 王秀娟 | A kind of high-strength cable and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 |