Flame-retardant composition for manufacturing of electrical cables with insulation and/or functioning continuation

摘要

A ceramisable fire-resistant compsn. (I) contains (a) an organosilicon polymer, (b) a ceramisable filler and (c) a wetting agent. Also claimed is an electrical wire or cable with good retention of insulating and/or functional properties, contg. at least one component based on compsn. (I), esp. separating layers, casings, common sheaths or windings, insulation and/or accessories. Pref. filler (b) is an oxide, pref. Al2O3, in amts. of 100 pts.wt. to 100 pts.wt. of polymer (a). Pref. (c) is a metal soap, pref. an Al soap. (I) may also contain other additive(s), esp. non-ceramising fillers, pref. carbonates, esp. pref. CaCO3 and/or MgCO3, crosslinking agents, pref. organic peroxides, and mineral material(s), pref. mineral fibres, e.g. silicate, glass or ceramic fibres. The cable contains (I) in combination with a silicone rubber component. (I) contains a mineral material and is pref. in the form of a fibre composite. (I) may be a separating layer which is applied to the electrical conductor, pref. with an insulating layer of silicone or EPDM rubber over the separating layer.