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This is the free Material Data Center Datasheet of CELANEX® 3202-2 - PBT - Celanese

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Características de processamento/físicas - Propriedades mecânicas - Propriedades térmicas - Outras propriedades - Recomendação de processamento Moldagem por injeção
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Características de processamento/físicasValorUnidadeMétodo de ensaio
ISO Dados
Contração após a moldagem, paralelo 0.6 % ISO 294-4, 2577
Propriedades mecânicasValorUnidadeMétodo de ensaio
ISO Dados
Tensão na ruptura 115 MPa ISO 527
Deformação na ruptura 3.2 % ISO 527
Propriedades térmicasValorUnidadeMétodo de ensaio
ISO Dados
Temperatura de fusão, 10°C/min 225 °C ISO 11357-1/-3
Outras propriedadesValorUnidadeMétodo de ensaio
Absorção de umidade 0.1 % Sim. to ISO 62
Densidade 1450 kg/m³ ISO 1183
Recomendação de processamento Moldagem por injeçãoValorUnidadeMétodo de ensaio
Pré-secagem - temperatura 121 °C -
Pré-secagem - tempo 4 h -
Umidade do processamento ≤0.02 % -
Temperatura da massa 235 - 260 °C -
Temperatura do molde 65 - 93 °C -
Características
Processamento
Moldagem por injeção
Aditivos
Desmoldante
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%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-30°F (-34°C) at 250°F (121°C) for 4 hours.
Rear Temperature 450-470(230-240) deg F (deg C)
Center Temperature 460-480(235-250) deg F (deg C)
Front Temperature 470-500(240-260) deg F (deg C)
Nozzle Temperature 480-500(250-260) deg F (deg C)
Melt Temperature 460-500(235-260) deg F (deg C)
Mold Temperature 150-200(65-93) deg F (deg C)
Back Pressure 0-50 psi
Screw Speed Medium
Injection Speed Fast

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, in particular for flame retardant grades. Up to 25% clean and dry regrind may be used.
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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