Resin-bonded graphite material, method for the production of a resin bonded graphite material and use thereof
AssigneeSchunk Kohlenstofftechnik GmbH
InventorsBettina Hübner, Rainer Sperling, Klaus-Georg Tontsch
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Abstract
A resin bonded graphite material which is especially suitable for use as an electric contact, and a method for the production of this resin bonded graphite material. According to the invention, the resin-bonded graphite material if formed from a mixture of carbon black containing electro-graphite with a unburned graphite content of RG wherein RG≧30 percent by weight, electro-graphite free of carbon black as well as binding agents. The material has a specific electrical resistance Wspec wherein Wspec≧3500 μΩm, and use of the resin bonded graphite material as an electrical contact makes possible substantial exclusion of radio interference.
Claims20
An electrical contact in the form of a brush or a collector ring comprising a resin-bonded graphite material,
- the resin-bonded graphite material comprising a mixture of carbon black containing electro-graphite with a unburned graphite content of RG, wherein RG≧30 percent by weight, electrographite free of carbon black, and binding agent,
- the resin bonded graphite material having a specific electrical resistance 3500 μΩm≦Wspec≦15,000 μΩm.
Dependencies are inferred from the claim text.