Mezcla de polímeros exenta de halógenos

• Main Authors: Fascella, Claudio, Niederwieser, Joachim, Dinkelmeyer, Christof
• Format: Patent
• Language: Spanish
• Published: 09.10.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; CONDUCTORS; ELECTRICITY; INORGANIC CHEMISTRY; INSULATORS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

Mezcla de polímeros exenta de halógenos para empleo para aislamientos y/o cubiertas de cables o líneas eléctricas, a base de al menos un polímero termoplástico y con un contenido en hidróxido de aluminio como agente ignífugo, caracterizada por que presenta - un polímero termoplástico con la composición - 0 a 50 phr de copolímero de acetato de etilenvinilo, - 0 a 50 phr de polietileno, - 20 a 100 phr de copolímero de polipropileno-etileno y/o polipropileno, - 100 a 250 phr de hidróxido de aluminio molturado, - 0 a 100 phr de carga mineral, - 0 a 10 phr de aditivos, que comprenden agente antienvejecimiento, estabilizador UV, colorante y/o agente auxiliar de elaboración, - por que el hidróxido de aluminio molturado presenta una superficie específica (BET) de 5,0 m2/g- 15,0 m2/g según DIN 9277 y un tamaño de grano medio de 2,5 μm - 5,5 μm según la norma ISO 13320-1, y - por que una capa aplicada mediante extrusión como aislamiento y/o cubierta sobre cables o líneas eléctricas, constituida por una mezcla de polímeros que contiene este polímero, presenta una resistencia a la tracción de al menos 8 MPa a temperatura ambiente y un alargamiento de rotura de al menos un 125 %. Halogen-free polymer mixture comprises at least one thermoplastic polymer composition comprising 0-50 phr ethylene vinyl acetate copolymer, 0-50 phr polyethylene, 20-100 phr polypropylene-ethylene copolymer and/or polypropylene, 100-250 phr ground aluminum hydroxide, 0-100 phr mineral filler, 0-10 phr additives comprising antioxidants, UV stabilizer, colorant and/or processing aid; and aluminum hydroxide as a flame retardant. A layer made of the polymer containing the polymer mixture is applied on electrical cables or lines by extruding as an insulation and/or coating. Halogen-free polymer mixture comprises at least one thermoplastic polymer composition comprising 0-50 phr ethylene vinyl acetate copolymer, 0-50 phr polyethylene, 20-100 phr polypropylene-ethylene copolymer and/or polypropylene, 100-250 phr ground aluminum hydroxide, 0-100 phr mineral filler, 0-10 phr additives comprising antioxidants, UV stabilizer, colorant and/or processing aid; and aluminum hydroxide as a flame retardant, where the ground aluminum has a specific surface area (Brunauer, Emmett and Teller) of 5-15 m 2>/g according to DIN 9277 and an average grain size of 2.5-5.5 mm according to ISO 13320-1. A layer made of the polymer containing the polymer mixture, which has a tensile strength of at least 8 MPa at room temperature and an elongation at break of at least 125%, is applied on electrical cables or lines by extruding as an insulation and/or coating.