GB539704A - Improvements in and relating to the art of manufacturing high temperature mica products - Google Patents
Improvements in and relating to the art of manufacturing high temperature mica productsInfo
- Publication number
- GB539704A GB539704A GB118440A GB118440A GB539704A GB 539704 A GB539704 A GB 539704A GB 118440 A GB118440 A GB 118440A GB 118440 A GB118440 A GB 118440A GB 539704 A GB539704 A GB 539704A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plates
- binder
- mica
- high temperature
- relating
- 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
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
- H01B3/04—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances mica
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Inorganic Insulating Materials (AREA)
Abstract
539,704. Composite mica plates ; electric insulation. BOUGHTON, W. A., and MANSFIELD, W. R. Jan. 19, 1940, No. 1184. Drawings to Specification. [Class 70] [Also in Group XXXVI] Composite high temperature-resisting mica plates &c. of high electrical resistance are made by assembling mica film on a screen, and spraying or painting with binder, to half the necessary thickness, uniting two such half-plates with oversize films outermost so that the surfaces of the plate may be kept free from binder ; a series of such plates are then stacked with two thin metal separator plates between each, some thicker plates being used to prevent warping &c., superficially dehydrated, e.g. at 40‹ C. and with partial vacuum, heated to 550-650‹ C. in a furnace and whilst still red hot, and with the binder in a molten vitreous state, compressed at 250-500 lbs. per square inch and cooled under compression. As binder may be used 1 part by weight of monosodium phosphate, 4 to 6 of borax and 14 to 20 of water, about 4 per cent. of binder being left in the finished plates. The separator plates have a low coefficient of thermal expansion and may be of a nickel-iron alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB118440A GB539704A (en) | 1940-01-19 | 1940-01-19 | Improvements in and relating to the art of manufacturing high temperature mica products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB118440A GB539704A (en) | 1940-01-19 | 1940-01-19 | Improvements in and relating to the art of manufacturing high temperature mica products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB539704A true GB539704A (en) | 1941-09-22 |
Family
ID=9717620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB118440A Expired GB539704A (en) | 1940-01-19 | 1940-01-19 | Improvements in and relating to the art of manufacturing high temperature mica products |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB539704A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3310411A (en) * | 1963-01-30 | 1967-03-21 | Gen Electric | Inorganic-bonded reconstituted mica sheet |
-
1940
- 1940-01-19 GB GB118440A patent/GB539704A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3310411A (en) * | 1963-01-30 | 1967-03-21 | Gen Electric | Inorganic-bonded reconstituted mica sheet |
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