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This is the free Material Data Center Datasheet of VANDAR® 2500 - PBT - Celanese

Material Data Center offers the following functions for VANDAR® 2500:
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Caracteristicas de procesamiento y fisicas - Propiedades mecánicas - Propiedades térmicas - Otras propiedades
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Caracteristicas de procesamiento y fisicasValorUnidadesMétodo de ensayo
ISO Data
Contracción posterior al moldeo, paralelo 1.9 % ISO 294-4, 2577
Contracción posterior al moldeo, normal 1.9 % ISO 294-4, 2577
Propiedades mecánicasValorUnidadesMétodo de ensayo
ISO Data
Módulo de tracción 1450 MPa ISO 527
Esfuerzo de fluencia 35 MPa ISO 527
Alarg. en límite elástico 5 % ISO 527
Alarg. nominal a rotura >50 % ISO 527
Resistencia al impacto Charpy, +23°C 203 kJ/m² ISO 179/1eU
Resistencia al impacto Charpy, -30°C 168 kJ/m² ISO 179/1eU
Resistencia al impacto Charpy c/entalla, +23°C 88 kJ/m² ISO 179/1eA
Resistencia al impacto Charpy c/entalla, -30°C 9 kJ/m² ISO 179/1eA
Propiedades térmicasValorUnidadesMétodo de ensayo
ISO Data
Temperatura de fusión, 10°C/min 225 °C ISO 11357-1/-3
Temp. de transición vítrea, 10°C/min 70 °C ISO 11357-1/-2
Estabilidad al calor, 1.80 MPa 50 °C ISO 75-1/-2
Estabilidad al calor, 0.45 MPa 125 °C ISO 75-1/-2
Coef.de expansión térmica lineal, paralelo 130 E-6/K ISO 11359-1/-2
Coef.de expansión térmica lineal, normal 134 E-6/K ISO 11359-1/-2
Otras propiedadesValorUnidadesMétodo de ensayo
Absorción de agua 0.45 % Sim. to ISO 62
Densidad 1250 kg/m³ ISO 1183
Características
Procesamiento y forma de entrega
Moldeo por inyección
Forma de suministro
Sémola
Aditivos
Lubricante
Disponibilidad regional
Norteamérica, Europa, Asia Pacifico, América del Sur y Centroaméric, Próximo Oriente/Africa
Demás información
Moldeo por inyección
To avoid hydrolytic degradation during processing, Vandar 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 450-480(230-250) deg F (deg C)
Center Temperature 460-490(235-255) deg F (deg C)
Front Temperature 470-500(240-260) deg F (deg C)
Nozzle Temperature 470-510(240-265) deg F (deg C)
Melt Temperature 470-510(240-265) deg F (deg C)
Mold Temperature 100-200(40-95 deg F (deg C)
Back Pressure 0-50 psi
Screw Speed Moderate
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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