| 摘要 |
FIELD: motor- and ship-building industries, mechanical and construction engineering, oil extraction, and oil-refining industry. ^ SUBSTANCE: proposed electric wire or cable has multicore copper conductor with core sectional area of 1.0 to 50 mm2 and rubber sheath, 0.4 to 7.0 mm thick, made of composite material based on rubber mixture incorporating mixture of high-molecular polymethylvinylsiloxane rubber and low-molecular polymethylvinylsiloxane rubber as polymeric matrix with molar mass of 20 000 to 70 000 in combination with probably stearic acid, fire-protective filler, dehydrating agent, silica powder, quartz crystal, anti-structuring agent (alpha, omega-dihydroxydimethylsiloxane), organic peroxide, and water repellant (silicone liquid). Composite material is applied by extrusion at a rate of 0.2-2 m/s and cured in radiation-chemistry curing mode under action of either vapor at pressure of 12-18 at or cobalt gun using gamma-ray source at dose rate of 2.5-20 Mrad, and/or by thermal curing. Electric cable or wire covered with such sheath is characterized in ability of self-quenching fire and can be used at temperatures ranging between -60 and +300 °C. ^ EFFECT: enhanced crack, oil, and gasoline resistance, flexibility, and electrophysical characteristics of cable or wire. ^ 3 cl 1 tbl |
