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This is the free Material Data Center Datasheet of CELANEX® 3226 - PBT-GF20 - Celanese

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Informação do produto
Celanex 3226 is a non-exuding, 20% glass-filled, flame retarded polybutylene terephthalate (PBT) which has an excellent balance of mechanical properties and processability. It is well suited for electrical connectors and maintains its UL ratings with up to 50% regrind.

Flammability @1.6mm nom. thickn.V-0-
Flammability at thickness h (0.38 mm)V-0UL recognition (h)
Características de processamento/físicasValorUnidadeMétodo de ensaio
ISO Dados
Índice de fluidez volumétrico, MVR 9 cm³/10min ISO 1133
Temperatura 250 °C -
Carga 2.16 kg -
Contração após a moldagem, paralelo 0.4 % ISO 294-4, 2577
Contração após a moldagem, perpendicular 0.9 % ISO 294-4, 2577
Propriedades mecânicasValorUnidadeMétodo de ensaio
ISO Dados
Módulo de tração 7200 MPa ISO 527
Tensão na ruptura 115 MPa ISO 527
Deformação na ruptura 2.5 % ISO 527
Resistência ao impacto Charpy , +23°C 35 kJ/m² ISO 179/1eU
Resistência ao impacto Charpy, -30°C 35 kJ/m² ISO 179/1eU
Res. impacto Charpy c/entalhe, +23°C 7 kJ/m² ISO 179/1eA
Res. impacto Charpy c/entalhe, -30°C 6.5 kJ/m² ISO 179/1eA
Propriedades térmicasValorUnidadeMétodo de ensaio
ISO Dados
Temperatura de fusão, 10°C/min 225 °C ISO 11357-1/-3
Temperatura de deflexão térmica, 1.80 MPa 203 °C ISO 75-1/-2
Temperatura de deflexão térmica, 0.45 MPa 220 °C ISO 75-1/-2
Temperatura de amolecimento Vicat, B 220 °C ISO 306
Coef. de expansão térmica linear, paralelo 35 E-6/K ISO 11359-1/-2
Coef. de expansão térmica linear, perpend. 35 E-6/K ISO 11359-1/-2
Flamabilidade a 1.5mm esp. nom. V-0 class IEC 60695-11-10
Espessuras do tubo de teste 1.6 mm -
Flamabilidade a espessura h V-0 class IEC 60695-11-10
Espessuras do tubo de teste 0.4 mm -
Cartão Amarelo (yellow card) disponível sim - -
Flamabilidade conforme índice de oxigênio 30 % ISO 4589-1/-2
Propriedades elétricasValorUnidadeMétodo de ensaio
ISO Dados
Constante dielétrica, 1MHz 3.9 - IEC 62631-2-1
Fator de dissipação dielétrica, 1MHz 160 E-4 IEC 62631-2-1
Resistividade volumétrica específica >1E13 Ohm*m IEC 62631-3-1
Resistividade superficial específica >1E15 Ohm IEC 62631-3-2
Resistência elétrica 32 kV/mm IEC 60243-1
Outras propriedadesValorUnidadeMétodo de ensaio
Absorção de água 0.4 % Sim. to ISO 62
Absorção de umidade 0.2 % Sim. to ISO 62
Densidade 1600 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
Forma de entrega
Granulos
Aditivos
Desmoldante
Características especiais
Retardante de chama, Estável contra o calor
Aplicaciones
Elétrica e Eletrônica
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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