CH242015A - Process for the production of insulation material. - Google Patents
Process for the production of insulation material.Info
- Publication number
- CH242015A CH242015A CH242015DA CH242015A CH 242015 A CH242015 A CH 242015A CH 242015D A CH242015D A CH 242015DA CH 242015 A CH242015 A CH 242015A
- Authority
- CH
- Switzerland
- Prior art keywords
- insulation material
- quartz
- production
- filler
- pure quartz
- Prior art date
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
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/36—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes condensation products of phenols with aldehydes or ketones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Verfahren zur Herstellung von Isolationsmaterial. Es sind Isolationsmaterialien bekannt, die aus Kondensationsprodukten von organischen Verbindungen, z. B. Phenol mit Formalde hyd, bestehen (Kunstharz). Aus diesen wer den unter Hinzufügung von Füllstoffen, z. B. Papier, Sägemehl und dergleichen, durch Pressen unter gleichzeitiger Einwirkung von Wärme die gewünschten Teile hergestellt. Derartige Isolationsstoffe besitzen jedoch im allgemeinen sehr .grosse dielektrische Verluste, so dass sie für die Hochfrequenztechnik nur bedingt in Frage kommen.
Zur Herabsetzung der dielektrischen Verluste ist es bereits be kannt geworden, als Füllstoff Quarzsand zu verwenden. Die Verwendung eines derartigen Füllstoffes hat jedoch in pressteohnischer Hin sicht Nachteile, indem die gepressten Materia lien infolge der schlechten Fliessbarkeit des Materials Hohlräume aufweisen. Insbeson dere bei Gegenständen mit mehreren Absät zen oder ganten wirkt sich dieses nachteilig aus, indem das Material beim Pressen nicht in alle Ecken der Pressform gelangt.
Zur Vermeidung dieser Nachteile wird nach dem Verfahren .gemäss vorliegender Er findung zur Herstellung von Isolationsmate rial aus hochmolekularen Kondensations- produkten als Füllstoff reiner Quarz zuge setzt, der durch Mahlen von aus dem Schmelzfluss erstarrtem Quarz erhalten wurde.
Durch diese Massnahme ist der Nachteil der schlechten Fliessbarken beseitigt, so,dass auch bei Herstellung von schwierigen Gegenstän den eine einwandfreie Formgebung gewähr leistet ist, da das Material beim Pressen in alle Ecken und ganten der Pressform ein fliesst.
Eine Mischung, die neben der guten Fliess- barkeit auch besonders gute mechanische und elektrische Eigenschaften zeigt, besteht aus <B>78%</B> Quarz der genannten Art und 22 Phenol-Formaldehyd-Kondensationsprodukt. Ein, aus einer derartigen Mischung hergestell tes Isolationsmaterial besitzt eine hohe Schlag- und Biegefestigkeit. Als Ausgangsprodukt zur Herstellung des Füllstoffes kann Quarzsand gewählt werden, der geschmolzen und dann gemahlen wird.
Besonders vorteilhaft wirken sich jedoch die erfindungsgemässen Massnahmen dadurch aus, dass als Ausgangsprodukt auch Gebrauchs gegenstände aus reinem Quarz, z. B. Retorten, Röhren und dergleichen, verwendet werden können, die für andere Zwecke nicht mehr verwendbar sind. Diese Stoffe können sofort nach dem Mahlen als Füllstoff verwendet werden.
Sollte sieh zeigen, dass die ,gepresste Sub stanz in der Pressform festklebt, so kann die ses durch Zusatz von geringen Mengen Olein beseitigt werden.
Process for the production of insulation material. There are insulation materials known, which consist of condensation products of organic compounds, for. B. phenol with formaldehyde, exist (synthetic resin). From these who the with the addition of fillers such. B. paper, sawdust and the like, produced the desired parts by pressing with the simultaneous action of heat. However, such insulation materials generally have very large dielectric losses, so that they are only of limited use for high-frequency technology.
To reduce the dielectric losses, it has already become known to use quartz sand as a filler. The use of such a filler, however, has disadvantages in relation to the pressing, in that the pressed materials have voids due to the poor flowability of the material. Especially in the case of objects with several paragraphs or ganten, this has a disadvantageous effect in that the material does not get into all corners of the mold during pressing.
To avoid these disadvantages, according to the present invention for the production of insulation material from high molecular weight condensation products, pure quartz is added as filler, which was obtained by grinding quartz solidified from the melt flow.
This measure eliminates the disadvantage of poor flowability, so that perfect shaping is guaranteed even when difficult objects are being produced, since the material flows into all corners of the mold during pressing.
A mixture which, in addition to good flowability, also exhibits particularly good mechanical and electrical properties, consists of <B> 78% </B> quartz of the type mentioned and 22 phenol-formaldehyde condensation product. An insulation material made from such a mixture has high impact and flexural strength. Quartz sand, which is melted and then ground, can be selected as the starting product for the manufacture of the filler.
However, the measures according to the invention have a particularly advantageous effect in that, as starting products, commodities made of pure quartz, e.g. B. retorts, tubes and the like can be used, which are no longer usable for other purposes. These substances can be used as fillers immediately after grinding.
If you see that the pressed substance sticks in the mold, this can be eliminated by adding small amounts of olein.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE242015X | 1942-07-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH242015A true CH242015A (en) | 1946-04-15 |
Family
ID=5913973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH242015D CH242015A (en) | 1942-07-21 | 1943-06-08 | Process for the production of insulation material. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH242015A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE969413C (en) * | 1953-09-19 | 1958-05-29 | Siemens Ag | Electrical switching element with electrically insulating lacquer coating |
DE1105933B (en) * | 1955-09-12 | 1961-05-04 | Westinghouse Electric Corp | Heat-hardened synthetic resin pressed part intended for use as an electrical insulating part in the vicinity of electric arcs |
-
1943
- 1943-06-08 CH CH242015D patent/CH242015A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE969413C (en) * | 1953-09-19 | 1958-05-29 | Siemens Ag | Electrical switching element with electrically insulating lacquer coating |
DE1105933B (en) * | 1955-09-12 | 1961-05-04 | Westinghouse Electric Corp | Heat-hardened synthetic resin pressed part intended for use as an electrical insulating part in the vicinity of electric arcs |
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