US2354074A - Method of impregnating electric articles - Google Patents
Method of impregnating electric articles Download PDFInfo
- Publication number
- US2354074A US2354074A US451485A US45148542A US2354074A US 2354074 A US2354074 A US 2354074A US 451485 A US451485 A US 451485A US 45148542 A US45148542 A US 45148542A US 2354074 A US2354074 A US 2354074A
- Authority
- US
- United States
- Prior art keywords
- articles
- solution
- impregnating
- benzol
- electric articles
- 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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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
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
- H01B3/485—Other fibrous materials fabric
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/227—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated
- D06M15/233—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of hydrocarbons, or reaction products thereof, e.g. afterhalogenated or sulfochlorinated aromatic, e.g. styrene
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J1/00—Fibreboard
- D21J1/08—Impregnated or coated fibreboard
Definitions
- the present invention relates to amethod of initially impregnating particularly electrical -devices'such as condensers or windings with an im-' pregnation solution.
- electrical -devices' such as condensers or windings
- im-' pregnation solution an im-' pregnation solution
- the accompanying-drawing shows, as an example of an object intended to be impregnated according to said method, a condenser whose insulation layers designated by Hi may consist of mica, whereas the metallic-layers designated by H suitably consist of aluminium foils.
- the method of initially impregnating hitherto unimpregnated articles having interstices comprising first boiling the. unimpregnated articles in benzol, and then boiling the articles in a solution of polystyrol dissolved in toluol-xylol, said solution having a higher boiling point than t 2.
Description
y 1944- J. G. TANDBERG 2,354,074
METHOD OF IMPREGNA'IING ELECTRIC ARTICLES Filed July 1a, 1942;
INVENTOR.
455A T TORNE Y PatentedJul y 18, 1944" UNITED: :STATES';
PATENT Y OFFICE METHOD or mI P h E GNA'rING" ELECTRIC CLES g Y J v i Jolian Gudbrand Tamlberg', Qtockholm, Sweden, assignor to Electrolux Corporation, Dover, Del.,-
a corporation of Delaware Application July 18, 1 9
42, Serial 110451.485
In Sweden June-11, 1941 2 Claims. (Cl. 117-47) The present invention relates to amethod of initially impregnating particularly electrical -devices'such as condensers or windings with an im-' pregnation solution. In previously known methods of this kind for impregnating articles of the above type the latter have first been evaduated,
solution is viscous, it cannot entirely fill the intersticesof the windings. This drawback is elimmated by the method according to the present nvention, in accordancewith which articles to be initially impregnated are boiled first in a liquid having a lower boiiingpolnt than that or the impregnation solution and then boiled in said solution. Benzol is suitable as the liquidoi lower boiling point. The impregnation solution itself may, according-to the invention, suitably-consistof polystyrol dissolved in toluol-xylol.
The accompanying-drawing shows, as an example of an object intended to be impregnated according to said method, a condenser whose insulation layers designated by Hi may consist of mica, whereas the metallic-layers designated by H suitably consist of aluminium foils.
In carrying out the method according to the invention it is suitable first to dry the object to be impregnated, for example a condenser of the kind shown *in the drawing, by subjecting it to polystyrol dissolved in toluol-xylol. 10
' benzol.
v comprising first boiling the unimpfegnated artiheat. Thereupon the object is boiled in a liquid,
such as benzol which has a lower boiling point than the impregnation solution-which it is desired to use. I and'then boiled in an impregnation solutionhaving a higherboiling point than the liquid in which the article was first boiled. As an impregnation solution use may preferably be made of The invention obviously is not limited to the impregnation or condensers, it also being pos-- sible to impregnate according to the invention other objects, such as windingsfor electric machines, for instances motors, generators and the like. l
hat I claim is:
1. The method of initially impregnating hitherto unimpregnated articles having interstices comprising first boiling the. unimpregnated articles in benzol, and then boiling the articles in a solution of polystyrol dissolved in toluol-xylol, said solution having a higher boiling point than t 2. The method of initially impregnating hitherto unimpregnated article having interstices cles in benzol, cooling the articles, and then boiling the articles in a solution of polystyrol dissolved in 'tcluol-xylol. said solution having a. higher boiling point than benzol.
JonAN G DBnANn TANDBERG.
Afterwards, the"'article iscooled v
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE2354074X | 1941-06-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2354074A true US2354074A (en) | 1944-07-18 |
Family
ID=20425380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US451485A Expired - Lifetime US2354074A (en) | 1941-06-11 | 1942-07-18 | Method of impregnating electric articles |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2354074A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680695A (en) * | 1948-10-12 | 1954-06-08 | Lyon Inc | Process of silver coating plastic |
-
1942
- 1942-07-18 US US451485A patent/US2354074A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680695A (en) * | 1948-10-12 | 1954-06-08 | Lyon Inc | Process of silver coating plastic |
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