COMPOSITION FOR PRODUCING THE ELECTROTECHNICAL PRODUCTS Russian patent published in 2018 - IPC H01R43/12 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, in particular to graphite powder compositions used for compression compaction of products such as brushes of electric motors, sliding contacts of electric and urban transport. Composition for manufacturing electrical products contains a carbon filler and a binder. Powder filler contains particles of different sizes. Composition contains pulvermacher as a binder, and as a carbon filler – an artificial graphite with a mass fraction of carbon of 98.5–99.3 % and specific electric resistance of 9–11 μΩ with particles, mass%: the size of 10–50 microns – 14–16, the size of 50–90 microns – 25–29, the size of 90–120 microns – 28–34, the size of 120–150 microns – 17–19, in the size of 150–500 microns – 8–11. Graphite and pulverbakelite are taken in the composition at the following ratio, by weight: artificial graphite – 86.99–87.01; pulverbakelite – 12.99–13.01.

EFFECT: invention makes it possible to reduce the electrical resistance by more than 2 times, improve the ecological situation.

1 cl