Method of making a field control layer for medium voltage fittings

In the prodn. of a field control coating for medium voltage fittings, the starting materials are a very tacky polymer (I) with high room temp. viscosity; a solvent which is readily volatile at room temp.; granular SiC as electroconductive additive; plasticising additives; and antioxidants. A halogen...

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Hauptverfasser: BINNEWIRTZ, RALF JUERGEN.NAT, BOETTCHER, BODO
Format: Patent
Sprache:eng
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Zusammenfassung:In the prodn. of a field control coating for medium voltage fittings, the starting materials are a very tacky polymer (I) with high room temp. viscosity; a solvent which is readily volatile at room temp.; granular SiC as electroconductive additive; plasticising additives; and antioxidants. A halogen-free solvent (II) with an evapn. constant of less than 10, pref. less than 5 w.r.t. ether is used. Additives (III) contg. halogen are added, and the entire mixt. of the components is applied to the surface of the fitting, then (II) evaporates. Also claimed are coatings produced in this way.