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This is the free Material Data Center Datasheet of IMPET® 2700 GV1/20 - PET-GF20 - Celanese

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Texto del producto
Polyethylene terephthalate, 20 % glass fibre reinforced, high flowability, excellent gloss, high modulus

Flammability @1.6mm nom. thickn.HB-
Flammability at thickness h (0.8 mm)HB-
Caracteristicas de procesamiento y fisicasValorUnidadesMétodo de ensayo
ISO Data
Contracción posterior al moldeo, paralelo 0.3 % ISO 294-4, 2577
Contracción posterior al moldeo, normal 0.9 % ISO 294-4, 2577
Propiedades mecánicasValorUnidadesMétodo de ensayo
ISO Data
Módulo de tracción 8200 MPa ISO 527
Resistencia a la tracción 133 MPa ISO 527
Alargamiento a rotura 2 % ISO 527
Resistencia al impacto Charpy, +23°C 20 kJ/m² ISO 179/1eU
Resistencia al impacto Charpy, -30°C 20 kJ/m² ISO 179/1eU
Resistencia al impacto Charpy c/entalla, +23°C 6.8 kJ/m² ISO 179/1eA
Resistencia al impacto Charpy c/entalla, -30°C 6.6 kJ/m² ISO 179/1eA
Propiedades térmicasValorUnidadesMétodo de ensayo
ISO Data
Temperatura de fusión, 10°C/min 255 °C ISO 11357-1/-3
Temp. de transición vítrea, 10°C/min 80 °C ISO 11357-1/-2
Estabilidad al calor, 1.80 MPa 233 °C ISO 75-1/-2
Estabilidad al calor, 0.45 MPa 248 °C ISO 75-1/-2
Temp. reblandecimiento Vicat, B 250 °C ISO 306
Coef.de expansión térmica lineal, paralelo 23 E-6/K ISO 11359-1/-2
Coef.de expansión térmica lineal, normal 95 E-6/K ISO 11359-1/-2
Combustibilidad a 1.5mm esp. nom. HB class IEC 60695-11-10
Espesores de probeta 1.6 mm -
Combustibilidad a espesor h HB class IEC 60695-11-10
Espesores de probeta 0.8 mm -
Combustibilidad según índice de oxigeno 24 % ISO 4589-1/-2
Propiedades eléctricasValorUnidadesMétodo de ensayo
ISO Data
Constante dieléctrica, 100Hz 4.6 - IEC 62631-2-1
Constante dieléctrica, 1MHz 4.1 - IEC 62631-2-1
Factor de pérdidas dieléctricas, 100Hz 30 E-4 IEC 62631-2-1
Factor de pérdidas dieléctricas, 1MHz 190 E-4 IEC 62631-2-1
Resistividad volumétrica específica >1E13 Ohm*m IEC 62631-3-1
Resistividad superficial específica 1E14 Ohm IEC 62631-3-2
Resistencia dieléctrica 31 kV/mm IEC 60243-1
Otras propiedadesValorUnidadesMétodo de ensayo
Absorción de agua 0.45 % Sim. to ISO 62
Absorción de humedad 0.2 % Sim. to ISO 62
Densidad 1520 kg/m³ ISO 1183
Propiedades específicas del materialValorUnidadesMétodo de ensayo
ISO Data
Indice de viscosidad 70 cm³/g ISO 307, 1157, 1628
Recomendación para procesamiento Moldeo por inyecciónValorUnidadesMétodo de ensayo
Temperatura de pre-secado 120 - 140 °C -
Tiempo de pre-secado 2 - 4 h -
Humedad de procesamiento ≤0.01 % -
Temperatura de la masa 270 - 290 °C -
Temperatura del molde 135 - 145 °C -
Funciones
Esfuerzo-alargamiento , IMPET® 2700 GV1/20, PET-GF20, Celanese
Módulo secante-alargamiento , IMPET® 2700 GV1/20, PET-GF20, Celanese
Características
Procesamiento y forma de entrega
Moldeo por inyección
Forma de suministro
Sémola
Aditivos
Desmoldeante
Características especiales
Estable contra el calor
Características
High Gloss
Disponibilidad regional
Europa
Demás información
Moldeo por inyección
To avoid hydrolytic degradation during processing, IMPET resins have to be dried to a moisture level equal to or less than 0,01%. The drying should be done in a dry-air dryer (dew point < -30°C) with a temperature of 120 to 140 °C and a drying time of 2 to 4 hours. In case of longer residence times in the dry-air dryer, the temperature should be reduced to 100°C.
The time between drying and processing should be kept as short as possible. The processing machine feed hopper should be closed during the processing operation.

Melt Temperature 270-290 °C
Mold Temperature 135-145 °C
Maximum Barrel Residence Time *) 5-10 min
Injection Speed fast
Peripheral screw speed max.0,3 m/sec
Back Pressure 10-20 bar
Injection Pressure 600-900 bar
Holding Pressure 300-500 bar
Nozzle Design open design preferred

Injection speed, injection pressure and holding pressure have to be optimized to the individual article geometry. To avoid material degradation during processing low back pressure and minimum screw speed have to be used. Overheating of the material has to be avoided.

Ticona recommends only externally heated hot runner systems.

*) If the cylinder temperatures are higher than the recommended maximum temperatures, the max. residence time in the barrel has to be reduced.
Disclaimer
Copyright Altair Engineering GmbH. Altair Engineering GmbH assumes no liability for the system to be free of errors. The user takes sole responsibility for the use of this data under the exclusion of every liability from Altair Engineering GmbH; this is especially valid for claims of compensation resulting from consequential damages. Altair explicitly points out that any decision about the application of materials must be double checked with the producer of this material. This includes all contents of this system. Copyright laws are applicable for the content of this system.
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