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This is the free Material Data Center Datasheet of CELANEX® 2302SW1 GV1/20 - (PBT+PET+PTFE)-GF20 - Celanese

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Texto del producto
Chemical abbreviation according to ISO 1043-1: PBT PET GF20, PTFE-modified grade with 20% glass fiber for injection molded parts with superior gloss and improved slip and wear characteristics. Flammability UL 94 HB minimum thickness 0.8 mm.

Flammability @1.6mm nom. thickn.HB-
Flammability at thickness h (0.8 mm)HB-
Caracteristicas de procesamiento y fisicasValorUnidadesMétodo de ensayo
ISO Data
Indice de fluidez volumétrico, MVR 16 cm³/10min ISO 1133
Temperatura 265 °C -
Carga 2.16 kg -
Contracción posterior al moldeo, paralelo 0.5 % ISO 294-4, 2577
Contracción posterior al moldeo, normal 1.0 % ISO 294-4, 2577
Propiedades mecánicasValorUnidadesMétodo de ensayo
ISO Data
Módulo de tracción 8000 MPa ISO 527
Resistencia a la tracción 135 MPa ISO 527
Alargamiento a rotura 3 % ISO 527
Resistencia al impacto Charpy, +23°C 55 kJ/m² ISO 179/1eU
Resistencia al impacto Charpy c/entalla, +23°C 9 kJ/m² ISO 179/1eA
Propiedades térmicasValorUnidadesMétodo de ensayo
ISO Data
Temperatura de fusión, 10°C/min 255 °C ISO 11357-1/-3
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 -
Otras propiedadesValorUnidadesMétodo de ensayo
Absorción de agua 0.4 % Sim. to ISO 62
Absorción de humedad 0.15 % Sim. to ISO 62
Densidad 1470 kg/m³ ISO 1183
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 ≤0.02 % -
Temperatura de la masa 265 - 275 °C -
Temperatura del molde 90 - 100 °C -
Características
Procesamiento y forma de entrega
Moldeo por inyección
Forma de suministro
Sémola
Aditivos
Lubricante, Desmoldeante
Características especiales
Estable contra el calor
Características
High Gloss
Disponibilidad regional
Europa
Demás información
Moldeo por inyección
To avoid hydrolytic degradation during processing, CELANEX resins have to be dried to a moisture level equal to or less than 0,02%. 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 265-275 °C
Mold Temperature *) 90-100 °C
Maximum Barrel Residence Time **) 5-10 min
Injection Speed fast
Peripheral screw speed max.0,3 m/sec
Back Pressure 10-30 bar
Injection Pressure 600-1000 bar
Holding Pressure 400-800 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.

Celanese recommends only externally heated hot runner systems.

*) For moulded parts with especially high requirements to the surface quality or dimensional stability, a mold temperature of up to 110 °C can be advantageous.

**) 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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