FIELD: electrical engineering, in particular, composite resistive conducting materials, applicable in manufacture of resistors and heating elements used in heating systems.
SUBSTANCE: the material contains bitumen БН 90/10 or pitch - 45.0 to 97.0 percent by mass, and a current-conducting phase - 3.0 to 55.0 percent by mass. Besides, it may additionally contain quartz sand, industrial oil or synthetic rubbers.
EFFECT: produced resistive conducting material, having a property of self-regulation of specific resistance depending on the temperature of heating-up, which provides a wide range of preset of electric characteristics, besides, the material does not require high expenditures connected with its production, simple in manufacture and is moisture-resistant.
4 cl, 1 dwg, 1 tbl, 3 ex
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