Non-halogen-containing flame-retardant ethylene-propylene copolymer compositions for cable insulation with nitrogen- and sulfur-containing fire retardants
✍ Scribed by M. S. Karaivanona; K. M. Gjurova
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 158 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
The effects of ammonium salts of sulfaminic acids, containing aliphatic and arylaliphatic hydrocarbon chains, respectively, in a combination with inorganic fire retardants and fillers, on the properties of ethylene-propylene copolymer compositions (EPCC) for cable insulation were studied. The additive action of the organic fire retardants and antimony oxide in a weight ratio of 3:1 was proved. EPCC indicated a limited oxygen index (LOI) of 37-39% and a diminished smoke release and belonged to UL class zero. The thermal destruction of the system consisting of a copolymer blend and fire retardant, as well as the individual organic and inorganic fire retardants, was studied using dynamic thermal analyses (DTA, TG, DTG). The combination of fire retardants caused a decrease of both the heat release and weight loss over the EPCC surface.