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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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Informação do produto
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-
Características de processamento/físicasValorUnidadeMétodo de ensaio
ISO Dados
Índice de fluidez volumétrico, MVR 16 cm³/10min ISO 1133
Temperatura 265 °C -
Carga 2.16 kg -
Contração após a moldagem, paralelo 0.5 % ISO 294-4, 2577
Contração após a moldagem, perpendicular 1.0 % ISO 294-4, 2577
Propriedades mecânicasValorUnidadeMétodo de ensaio
ISO Dados
Módulo de tração 8000 MPa ISO 527
Tensão na ruptura 135 MPa ISO 527
Deformação na ruptura 3 % ISO 527
Resistência ao impacto Charpy , +23°C 55 kJ/m² ISO 179/1eU
Res. impacto Charpy c/entalhe, +23°C 9 kJ/m² ISO 179/1eA
Propriedades térmicasValorUnidadeMétodo de ensaio
ISO Dados
Temperatura de fusão, 10°C/min 255 °C ISO 11357-1/-3
Flamabilidade a 1.5mm esp. nom. HB class IEC 60695-11-10
Espessuras do tubo de teste 1.6 mm -
Flamabilidade a espessura h HB class IEC 60695-11-10
Espessuras do tubo de teste 0.8 mm -
Outras propriedadesValorUnidadeMétodo de ensaio
Absorção de água 0.4 % Sim. to ISO 62
Absorção de umidade 0.15 % Sim. to ISO 62
Densidade 1470 kg/m³ ISO 1183
Recomendação de processamento Moldagem por injeçãoValorUnidadeMétodo de ensaio
Pré-secagem - temperatura 120 - 140 °C -
Pré-secagem - tempo 2 - 4 h -
Umidade do processamento ≤0.02 % -
Temperatura da massa 265 - 275 °C -
Temperatura do molde 90 - 100 °C -
Características
Processamento
Moldagem por injeção
Forma de entrega
Granulos
Aditivos
Lubrificantes, Desmoldante
Características especiais
Estável contra o calor
Características
High Gloss
Disponibilidade regional
Europa
Outras informações
Moldagem por injeção
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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