GB659977A - Improvements in or relating to electrical conductors - Google Patents
Improvements in or relating to electrical conductorsInfo
- Publication number
- GB659977A GB659977A GB26444/49A GB2644449A GB659977A GB 659977 A GB659977 A GB 659977A GB 26444/49 A GB26444/49 A GB 26444/49A GB 2644449 A GB2644449 A GB 2644449A GB 659977 A GB659977 A GB 659977A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dispersion
- mixed
- polymeric material
- polymeric
- liquid
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
Abstract
Aluminium or aluminium-coated conductors are insulated with polymeric chlorotrifluoroethylene by passing the conductors through a dispersion of the polymeric material and then heating to volatilize the liquid phase of the dispersion and to fuse the polymeric material to a smooth sheath. The polymeric material is powdered in a hammer mill and then mixed with a dispersing liquid such as high-flash naphtha, butyl alcohol, benzene, toluene, xylene or ethylene glycol, and mixed in a pebble mill to obtain a homogeneous dispersion which may be maintained by agitation. For example, 15 parts of the polymeric powder may be mixed with 85 parts of a liquid dispersing medium comprising 2/3 by weight of high-flash naphtha and 1/3 n-butyl alcohol. The mixture is milled in a pebble mill for 168 hours. A conductor coated with this dispersion is passed through an oven whose temperature varies from about 150 DEG C. at the entrance to about 500 DEG C. at the exit. The dispersing medium is volatized at the lower temperature and the polychlorotrifluoroethylene coalesces at the higher temperature.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US659977XA | 1948-10-15 | 1948-10-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB659977A true GB659977A (en) | 1951-10-31 |
Family
ID=22066592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26444/49A Expired GB659977A (en) | 1948-10-15 | 1949-10-14 | Improvements in or relating to electrical conductors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB659977A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144260A (en) * | 1983-07-08 | 1985-02-27 | Raychem Ltd | Article with refractory coating |
| US4985313A (en) * | 1985-01-14 | 1991-01-15 | Raychem Limited | Wire and cable |
| US5209987A (en) * | 1983-07-08 | 1993-05-11 | Raychem Limited | Wire and cable |
-
1949
- 1949-10-14 GB GB26444/49A patent/GB659977A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2144260A (en) * | 1983-07-08 | 1985-02-27 | Raychem Ltd | Article with refractory coating |
| US5209987A (en) * | 1983-07-08 | 1993-05-11 | Raychem Limited | Wire and cable |
| US4985313A (en) * | 1985-01-14 | 1991-01-15 | Raychem Limited | Wire and cable |
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