CN205428518U - Multicore polyimide insulating composite film cable - Google Patents
Multicore polyimide insulating composite film cable Download PDFInfo
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- CN205428518U CN205428518U CN201620186739.0U CN201620186739U CN205428518U CN 205428518 U CN205428518 U CN 205428518U CN 201620186739 U CN201620186739 U CN 201620186739U CN 205428518 U CN205428518 U CN 205428518U
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Abstract
The utility model discloses a multicore polyimide insulating composite film cable, including conductor (1), conductor insulating layers (2), filler (3) and oversheath (4), conductor outsourcing conductor insulating layers is as a core, and it has outsourcing oversheath constitution multicore cable behind the filler to fill between the multicore, the conductor is annealing tin -coated copper conductor, does conductor insulating layers have spherical silica for the outer coating of conductor polyimide insulated paint complex film, the filler is restrainted for glass fiber is integrated, and the oversheath is flexible glass fiber woven protective envelope. The conductor is many transposition annealing tin -coated copper conductors, conductor diameter is at 1.0mm to 5.0mm. Flexible glass fiber woven protective envelope's braiding density is not less than 95%. The every increase 5mm of stranding external diameter of multicore cable, flexible glass fiber woven protective envelope's the thickness of weaving just increases 0.5mm. The utility model discloses an is the cable that a proof voltage grade is high, the antidetonation is moved, warping strength and temperature resistant 200~+ 300 DEG C electric power delivery cable for aerospace driving system's forceful electric power electric power delivery.
Description
Technical field
The utility model relates to a kind of forceful electric power electric power distribution electric wire, particularly relating to multicore polyimide insulative composite membrane cable, this cable is applicable to the forceful electric power electric power distribution of Aero-Space engine, 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 insulated cable structural representation of prior art, multicore silicon rubber insulated cable, including: conductor and conductor outsourcing insulation are as a core, after filling filler between multicore, outer coated sheath layer constitutes multicore silicon rubber insulated cable, wherein: conductor is stranded annealed copper conductor 11, insulating barrier is cross-linked silicone rubber insulating barrier 12, filler 13 such as polypropylene mesh band or the filler of other material, 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 sleeve 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 insulating materials, 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 insulating materials 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 particulate 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 particulate 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 cable, this cable is a proof voltage grade height, anti-vibration, warping strength and heatproof-200～the electric power distribution cable of+300 DEG C, for the forceful electric power electric power distribution of Aero-Space dynamical system.
In order to realize above-mentioned technical purpose, the utility model adopts the following technical scheme that
A kind of multicore polyimide insulative composite membrane cable, including conductor, insulating layer of conductor, filler and oversheath, conductor outsourcing insulating layer of conductor is as a core, and after being filled with filler between multicore, outsourcing oversheath constitutes multicore cable；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 filler is glass fibre collection bunchy, and oversheath is flexible fiberglass-weave oversheath.
Described conductor is many stranded annealing tinned copper conductors；Described conductor diameter is at 1.0mm to 5.0mm.
The count of described flexible fiberglass-weave oversheath is not less than 95%；The laying up diameter of described multicore cable often increases 5mm, and the braiding thickness of flexible fiberglass-weave oversheath is increased by 0.5mm.
The utility model multicore polyimide insulative composite membrane cable 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.
The utility model multicore polyimide insulative composite membrane 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 silicon rubber.
Cable of the present utility model is a proof voltage grade height, anti-vibration, warping strength and heatproof-200～the electric power distribution cable of+300 DEG C, there is provided operating current for various instrument and meters, living electric apparatus and dynamical system, especially can be used for the forceful electric power electric power distribution of Aero-Space dynamical system.
Accompanying drawing explanation
Fig. 1 is existing multicore silicon rubber insulated cable structural representation；
Fig. 2 is existing mineral insulation wire structure schematic diagram；
Fig. 3 is the utility model multicore polyimide insulative composite membrane construction of cable schematic diagram.
In figure: 1 conductor, 2 insulating layer of conductor, 3 fillers, 4 oversheaths；11 stranded annealed copper conductors, 12 cross-linked silicone rubber insulating barriers, 13 fillers, 14 crosslinking silicon are as plastic boot layer；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 cable, including conductor 1, insulating layer of conductor 2, filler 3 and oversheath 4, conductor 1 outsourcing insulating layer of conductor 2 is as a core, and after being filled with filler 3 between multicore, outsourcing oversheath 4 constitutes multicore cable；Described conductor 1 is annealing tinned copper conductor, and insulating layer of conductor 2 is for being coated with preparing spherical SiO 2-polyimide insulative paint composite membrane outside conductor 1, and filler 3 is glass fibre collection bunchy, and oversheath 4 is flexible fiberglass-weave oversheath.
Described conductor 1 uses many stranded annealing tinned copper conductors, and conductor 1 diameter has good roundness and smoothness on 1.0mm to 5.0mm, conductor 1 surface.
Described insulating layer of conductor 2 uses preparing spherical SiO 2-polyimide insulative paint composite membrane, can make in the many stranded copper conductor surface coatings of a diameter of 1.0mm to 5.0mm.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 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 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 filler 3 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 flame-retardant flexible is good.
Described oversheath 4 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 cable, including conductor (1), insulating layer of conductor (2), filler (3) and oversheath (4), it is characterized in that: conductor (1) outsourcing insulating layer of conductor (2), as a core, is filled with filler (3) outsourcing oversheath (4) afterwards and constitutes multicore cable between multicore；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), filler (3) is glass fibre collection bunchy, and oversheath (4) is flexible fiberglass-weave oversheath.
Multicore polyimide insulative composite membrane cable the most according to claim 1, is characterized in that: described conductor (1) is many stranded annealing tinned copper conductors.
Multicore polyimide insulative composite membrane cable the most according to claim 2, is characterized in that: described conductor (1) diameter is at 1.0mm to 5.0mm.
Multicore polyimide insulative composite membrane cable the most according to claim 1, is characterized in that: the count of described flexible fiberglass-weave oversheath is not less than 95%.
Multicore polyimide insulative composite membrane cable the most according to claim 4, is characterized in that: the laying up diameter of described multicore cable often increases 5mm, the braiding thickness of flexible fiberglass-weave oversheath is increased by 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186739.0U CN205428518U (en) | 2016-03-11 | 2016-03-11 | Multicore polyimide insulating composite film cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620186739.0U CN205428518U (en) | 2016-03-11 | 2016-03-11 | Multicore polyimide insulating composite film cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205428518U true CN205428518U (en) | 2016-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620186739.0U Expired - Fee Related CN205428518U (en) | 2016-03-11 | 2016-03-11 | Multicore polyimide insulating composite film cable |
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| Country | Link |
|---|---|
| CN (1) | CN205428518U (en) |
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2016
- 2016-03-11 CN CN201620186739.0U patent/CN205428518U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |