INSULATING COMPOSITION
FIELD: cable industry. ^ SUBSTANCE: proposed composition designed for insulating sheaths of cables and wires operating under high fire hazard conditions has following proportion of ingredients, part by mass: suspension polyvinyl chloride, 100; ester plasticizer, 35 - 65; lead stabilizer, 2 - 7; calc...
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Format: | Patent |
Sprache: | eng ; rus |
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Zusammenfassung: | FIELD: cable industry. ^ SUBSTANCE: proposed composition designed for insulating sheaths of cables and wires operating under high fire hazard conditions has following proportion of ingredients, part by mass: suspension polyvinyl chloride, 100; ester plasticizer, 35 - 65; lead stabilizer, 2 - 7; calcium carbonate, 5 - 45; aluminum oxide trihydrate, 20 - 100; antimony trioxide, 5 - 9; zinc oxide, 0.5 - 8; and newly introduced zinc borate, 0.5 - 8; calcium stearate, 1 - 3; calcium chloride, 0.1 - 2 or calcium oxide, 0.1 - 2. ^ EFFECT: enhanced fire resistance at low degree of smoke emission under fire conditions. ^ 1 cl, 1 tbl |
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