CN202332352U - High temperature resisting wire - Google Patents
High temperature resisting wire Download PDFInfo
- Publication number
- CN202332352U CN202332352U CN 201120390432 CN201120390432U CN202332352U CN 202332352 U CN202332352 U CN 202332352U CN 201120390432 CN201120390432 CN 201120390432 CN 201120390432 U CN201120390432 U CN 201120390432U CN 202332352 U CN202332352 U CN 202332352U
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- CN
- China
- Prior art keywords
- high temperature
- insulating layer
- ptfe
- wire
- inner insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a high temperature resisting wire of which the structure adopts a normally stranded nickel-plated round copper wire conductor, wherein the periphery of the conductor adopts an inner insulating layer wound by a polyimide composite tape (PTFE/PI/PTFE); and the periphery of the inner insulating layer adopts an outer insulating layer formed by knitting high temperature resisting alkali-free glass fibers. The preparation method comprises the steps of: using the nickel-plated round copper wire stranded by a wire strander as the conductor; using the polyimide composite tape (PTFE/PI/PTFE) wound by a winder as the inner insulating layer; using a sintering furnace for sintering, and using the high temperature resisting alkali-free glass fibers knitted by a knitter as the outer insulating layer outside the inner insulating layer; coating high temperature resisting emulsion on the surface of the outer insulating layer, using the sintering furnace for drying the emulsion, and using the nickel-plated round copper wire knitted by the knitter as a shielding layer. The high temperature resisting wire has the advantages that: the insulation adopts winding and sintering techniques and composite insulation; the wire has good electric property and mechanical property, can resist a high temperature of 400 degrees centigrade, and is characterized in high temperature resistance, low temperature resistance, small outer diameter, light weight, softness and the like.
Description
Technical field:
The utility model is a fire resistant electric wire, is applicable under the hot environment crucial the connection to use electric wire, is mainly used in transmission signals, energy, is the crucial electronic devices and components that weaponry is used.
Background technology:
The domestic and international market is that the various high temperature electric wire cables of insulation are the most general with fluoroplastics; Especially be the electric wire product of insulation, sheath material with XETFE, be widely used in aerospace field, but owing to receive the restriction of XETFE material itself; With this material is the cable of insulation, sheath; Its long-term work temperature can only reach 200 ℃, can not satisfy the more requirement of high-temperature work environment, and aircraft industry needs a kind of new product to fill up this vacancy.We select for use the PTFE/PI/PTFE composite material as interior insulation, with the external insulation layer of the high temperature resistant alkali-free glass fibre of braiding machine braiding, through special processing technologys such as oversintering and coatings, have developed fire resistant electric wire.
Summary of the invention:
What the utility model proposed is fire resistant electric wire, satisfied wire work data: the long-term permission working temperature of (1) electric wire :-55 ℃～+ 350 ℃; (2) the short-term maximum operating temperature can reach 400 ℃ (1 hours).Minimum permission bending radius when (3) electric wire lays is 6 times of electric wire external diameter.Product is high temperature resistant to reach 400 degree, has high temperature resistant, low temperature resistant, characteristics such as external diameter is little, in light weight, softness.
The technological technical solution scheme of the utility model: it is characterized in that adopting the periphery of regular stranded nickel plating circular copper wire conductor is to adopt the wrapped inner insulating layer of polyimides composite band (PTFE/PI/PTFE), and this inner insulating layer periphery is the high temperature resistant alkali-free glass fibre external insulation layer with the braiding machine braiding.
Periphery with the high temperature resistant alkali-free glass fibre external insulation layer of braiding machine braiding is the nickel plating circular copper wire screen with the braiding machine braiding.
The utlity model has following advantage:
(1) insulation is adopted and is utilized wrapped and sintering process, adopts combined insulation, guarantees that electric wire has good electric property and mechanical performance.
(2) external diameter is little, in light weight: reduce to lay the space, be convenient to install.
(3) high temperature resistant: allowing working temperature for a long time is-55 ℃～+ 350 ℃, and the short-term operation temperature reaches 400 ℃.
(4) high temperature flexing test: sample one end is fixed on the coupon, coupon diameter 57 ± 2mm, the other end is hung heavy 57 ± 2g, puts into high-temperature cabinet together.Electric wire is through (400 ± 5) ℃, after the 2h test, and the immersion voltage test, power frequency 50Hz, 500V, 1min does not puncture.
(5) heatproof impact test: electric wire is at high temperature (400 ± 5 ℃), and 30min forwards low temperature (55 ± 2 ℃) to, 30min then in 1min.So circulation is continuous, totally 4 cycles.After the test, return to room temperature behind the 30min, measure insulation contraction maximum and be changed to 3.2mm.The immersion voltage test, power frequency 50Hz, 500V, 1min does not puncture.
(6) ageing test: electric wire is through (370 ± 5) ℃, after the 100h test, be cooled to room temperature after, with sample 2 circles of on coupon, reeling, oppositely reel again and 2 enclose, coupon diameter 57 ± 2mm takes off sample.The immersion voltage test, power frequency 50Hz, 500V, 1min does not puncture.
(7) low temperature flexing test: electric wire is through (60 ± 2) ℃, 4h, and under test temperature, the speed rotation coupon that changes with per minute about 2 is until till intact.Take out sample, it is heavy to remove extension, the immersion voltage test, and power frequency 50Hz, 500V, 1min does not puncture.
(8) fire-retardant: the electric wire material therefor is fire-retardant, controls spreading of fire.
(9) anti-interference: as to adopt nickel plating circular copper wire woven shield, improved interference free performance.
Description of drawings
Accompanying drawing 1 is the structural representation of fire resistant electric wire.
Accompanying drawing 2 is structural representations of the fire resistant electric wire of band screen.
Among the figure 1 is conductor, the 2nd, inner insulating layer, the 3rd, external insulation, the 4th, screen.
Embodiment
The preparation technology of fire resistant electric wire is as conductor 1 with the stranded multiply nickel plating circular copper wire of electric wire stranding machine; With the wrapped polyimides composite band (PTFE/PI/PTFE) of wrapped machine as inner insulating layer 2; The high temperature resistant alkali-free glass fibre that weaves with braiding machine in the inner insulating layer outside is as external insulation layer 3; With the high temperature resistant alkali-free glass fibre of braiding machine braiding as external insulation layer 3; Surface of insulating layer evenly applies the PTFE emulsion outside; Through sintering furnace oven dry, and with the nickel plating circular copper wire of braiding machine braiding as screen.
Claims (2)
1. fire resistant electric wire; It is characterized in that adopting the periphery of regular stranded nickel plating circular copper wire conductor is to adopt the wrapped inner insulating layer of polyimides composite band (PTFE/PI/PTFE), and this inner insulating layer periphery is the high temperature resistant alkali-free glass fibre external insulation layer with the braiding machine braiding.
2. fire resistant electric wire according to claim 1 is characterized in that the periphery with the high temperature resistant alkali-free glass fibre external insulation layer of braiding machine braiding is the nickel plating circular copper wire screen with the braiding machine braiding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120390432 CN202332352U (en) | 2011-10-14 | 2011-10-14 | High temperature resisting wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120390432 CN202332352U (en) | 2011-10-14 | 2011-10-14 | High temperature resisting wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202332352U true CN202332352U (en) | 2012-07-11 |
Family
ID=46444324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120390432 Expired - Lifetime CN202332352U (en) | 2011-10-14 | 2011-10-14 | High temperature resisting wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202332352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364589A (en) * | 2011-10-14 | 2012-02-29 | 南京全信传输科技股份有限公司 | High-temperature-resistant electric wire and preparation process thereof |
-
2011
- 2011-10-14 CN CN 201120390432 patent/CN202332352U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364589A (en) * | 2011-10-14 | 2012-02-29 | 南京全信传输科技股份有限公司 | High-temperature-resistant electric wire and preparation process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |