DE1901162A1 - Molded body with high tracking resistance - Google Patents
Molded body with high tracking resistanceInfo
- Publication number
- DE1901162A1 DE1901162A1 DE19691901162 DE1901162A DE1901162A1 DE 1901162 A1 DE1901162 A1 DE 1901162A1 DE 19691901162 DE19691901162 DE 19691901162 DE 1901162 A DE1901162 A DE 1901162A DE 1901162 A1 DE1901162 A1 DE 1901162A1
- Authority
- DE
- Germany
- Prior art keywords
- molded body
- tracking resistance
- filler
- high tracking
- shaped body
- 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.)
- Pending
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
- H01B3/42—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 polyesters; polyethers; polyacetals
- H01B3/421—Polyesters
- H01B3/425—Non-saturated polyesters derived from polycarboxylic acids and polyhydroxy compounds, in which at least one of the two components contains aliphatic unsaturation
-
- 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
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
-
- 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
- H01B3/42—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 polyesters; polyethers; polyacetals
Description
München 2,Rosentol7 .Munich 2, Rosentol7.
190Ί162190-162
10, Jan. 19BSJan. 10, 19BS
Inku Außen- und BinnenhandelsgesellschaftInku foreign and domestic trade company
Kurt Smolka in Wien (Österreich)Kurt Smolka in Vienna (Austria)
Formkörper mit hoher KriechstromfestigkeitMolded body with high tracking resistance
Die Erfindung bezieht sich auf einen Formkörper mit hoher Kriechstromfestigkeit und besteht im wesentlichen darin, daß dieser Formkörper aus einem ungesättigten Polyesterharz und gebranntem Gips oder- Anhydrit in feinkörniger Form in einem Gewichtsverhältnis Harz zu Füllstoff vons 1 : 0,8 bis 1:6, vorzugsweise 1 : 2 bis 1 : 4, besteht. Es ist bekannt, duroplastische Kunstharze, und zwar auch ungesättigte Polyesterharze oder Epoxyharze mit Füllstoffen zu versetzen. Es ist hiebei auch bekannt, Mischungsverhältnisse der oben genannten Art anzuwenden. Die Verwendung von gebranntem Gips pder Anhydrit als Füllstoff wurde jedoch für Formkörper hoher Kriechstromfestigkeit noch nicht vorgeschlagen und es hat sich gezeigt, daß gerade solche Füllstoffe hervorragende elektrische Werte, insbesondere Kriechstromfestigkeit, bei Polyesterharz, ergeben, indem allenfalls vorhandene Feuchtigkeit durch den Füllstoff gebunden wird. Außerdem hat sich gezeigt, daß gebrannter Gips in technischer Körnung weniger dazu neigt, zu sedimentieren, als dies beiThe invention relates to a molded body with high tracking resistance and consists essentially in that this molded body made of an unsaturated polyester resin and calcined gypsum or anhydrite in fine-grained Form in a resin to filler weight ratio of 1: 0.8 to 1: 6, preferably 1: 2 to 1: 4. It is known, thermosetting synthetic resins, including unsaturated polyester resins or epoxy resins with fillers to move. It is also known to use mixing ratios of the type mentioned above. The usage of However, baked gypsum or anhydrite as a filler has not yet been proposed for moldings with high tracking resistance and it has been shown that precisely such fillers have excellent electrical values, in particular tracking resistance, with polyester resin, in that any moisture that may be present is bound by the filler. In addition, it has been shown that calcined gypsum in technical grains tends less to sediment than is the case with
- 1 909836/1520 - 1 909836/1520
anderen Füllstoffen gleicher Körnung der Fall ist. Außerdem hat die Erfahrung gezeigt, daß bei Anwendung von gebranntem Gips ein wesentlich geringerer Formenverschleiß auftritt, als dies bei anderen Stoffen, wie Quarzmehl, SchiefermBgl und dergleichen der Fall ist.other fillers of the same grain size is the case. In addition, experience has shown that when using fired Plaster of paris, there is significantly less mold wear than with other materials such as quartz powder, slate and glass such is the case.
Es wird eine hohe Durchschlagfestigkeit (40 Kv/mm) und eine hervorragende Krieehstrom- (Stufe KA 3 c) und Lichtbogenfestigkeit (L 3) erzielt, so daß sich die erfindungsgemäßen Formkörper in besonderem Maße für elektrische Isolationszwecke eignen. Es können beispielsweise elektrische Isolatoren, welche bisher aus Keramik oder Glas bestanden, aus dem erfindungsgemäßen Material hergestellt werden, wobei sich gegenüber Keramik und Glas der Vorteil der Bruchsicherheit ergibt.It has a high dielectric strength (40 Kv / mm) and excellent tracking current (level KA 3 c) and arc resistance (L 3) achieved, so that the invention Moldings are particularly suitable for electrical insulation purposes. For example, electrical insulators, which previously consisted of ceramic or glass, are made of the material according to the invention, with Compared to ceramics and glass, there is the advantage of resistance to breakage.
Gemäß einer bevorzugten Ausführungsform der Erfindung enthalten die Formkörper den Füllstoff in Korngrößen zwischen 0,005 und 0,1 mm« Es können auch gröbere Korngrößen verwendet werden, wobei der Füllstoff dann nach der Fullerkurve sortiert werden soll. Bei Verwendung entsprechender feiner Körnung oder bei Sortierung nach der Fullerkurve, wird eine große Dichtheit der Formkörper erreicht, wodurch die elektrischen Eigenschaften wesentlich verbessert werden. Die Herstellung der Formkörper kann in beliebiger Weise durch Gießen, Formpressen oder Spritzpressen erfolgen.Contained according to a preferred embodiment of the invention the moldings the filler in grain sizes between 0.005 and 0.1 mm «Coarser grain sizes can also be used, the filler then being sorted according to the Fuller curve shall be. When using a corresponding fine grain size or when sorting according to the Fuller curve, a large Achieved tightness of the molded body, whereby the electrical properties are significantly improved. The production the shaped body can be produced in any way by casting, compression molding or transfer molding.
Ausführungsbeispiel:Embodiment:
i00 Gew.—Teile eines handelsüblichen ungesättigten Polyesters mit einem Gehalt von 30 bis 35 % Styrol wurden nach Zusatz von i Gew.-Teil käuflicher Benzoylperoxydpaste mit 180 Teilen Stuckaturgips innig vermischt, worauf die Masse in der üblichen Weise entlüftet wurde. Sie kann in beliebiger Weise durch' Gießen, Formpressen oder Spritzpressen verformt werden, daraus hergestellte Teile zeichnen sich durch hervorragende elektrische Eigenschaften aus.100 parts by weight of a commercially available unsaturated polyester with a styrene content of 30 to 35% were intimately mixed with 180 parts of plaster of paris after adding 1 part by weight of commercial benzoyl peroxide paste, after which the mass was deaerated in the usual way. It can be shaped in any way by casting, compression molding or transfer molding; parts made from it are characterized by excellent electrical properties.
Patentansprüche; - 2 - Claims; - 2 -
9098 36/15209098 36/1520
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT68168A AT280387B (en) | 1968-01-23 | 1968-01-23 | Shaped body with high tracking resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1901162A1 true DE1901162A1 (en) | 1969-09-04 |
Family
ID=3497010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19691901162 Pending DE1901162A1 (en) | 1968-01-23 | 1969-01-10 | Molded body with high tracking resistance |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT280387B (en) |
| BE (1) | BE726830A (en) |
| DE (1) | DE1901162A1 (en) |
| FR (1) | FR2000567A1 (en) |
| NL (1) | NL6900731A (en) |
-
1968
- 1968-01-23 AT AT68168A patent/AT280387B/en active
-
1969
- 1969-01-10 FR FR6900283A patent/FR2000567A1/en not_active Withdrawn
- 1969-01-10 DE DE19691901162 patent/DE1901162A1/en active Pending
- 1969-01-13 BE BE726830A patent/BE726830A/en unknown
- 1969-01-16 NL NL6900731A patent/NL6900731A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT280387B (en) | 1970-04-10 |
| NL6900731A (en) | 1969-07-25 |
| FR2000567A1 (en) | 1969-09-12 |
| BE726830A (en) | 1969-06-16 |
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