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Properties
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Value Units Test Method / Conditions Flexural Modulus (2mm/min 23°C, Dry) 17000 MPa ISO 178 Flexural Strength (for 2mm/min 23°C, Dry) 270 MPa ISO 178 Notched Charpy Impact (at 23°C, Dry) 10 kJ/m² ISO 179/1eA Notched Izod Impact (at 23°C, Dry) 9 kJ/m² ISO 180/1A Tensile Modulus (for 1mm/min 23°C, Dry) 18000 Мра ISO 527-2 Tensile Strain (5mm/min 23°C Dry, at break) 2 % ISO 527-2 Tensile Stress (5mm/min, 23°C Dry, at break) 175 Мра ISO 527-2 Unnotched Charpy Impact (at 23°C, Dry) 55 kJ/m² ISO 179/1eU Unnotched Izod Impact (at 23°C, Dry) 50 kJ/m² ISO 180/1U - Physical Properties
Value Units Test Method / Conditions Density (at 23°C, Dry) 1.78 g/cc ISO 1183 Melt Mass - Flow Rate (at 275°C/5kg, Dry) 43 g/10 min ISO 1133 Mold Shrinkage (2mm, Dry, Normal) 0.4 % ISO 294-4 Mold Shrinkage (2mm, Dry, Parallel) 0.2 % ISO 294-4 - Thermal Properties
Value Units Test Method / Conditions Melting Point (10°K/min, Dry) 225 °C ISO 11357/1-/3 Temperature of Deflection Under Load (045 Mpa, Dry) 220 °C ISO 75-2/B Temperature of Deflection Under Load (180 Mpa, Dry) 205 °C ISO 75-2/A - SDS Physical and Chemical Properties
Value Units Test Method / Conditions Flame Retardency min. 300 °C - Density (at 23°C) 1.4 - 1.7 gr/cm³ - Melting Point 240 °C - Odor Odorless - - Color All Colors - - Form Granular - - Insoluble in Water (at 15°C) - - - Electrical Properties and Flammability
Value Units Test Method / Conditions Comparative Trackina Index (Solution A, Dry) 250 V EN 60112 Flammability Classification (0,8mm - Ul 94, Dry) HB - EN 60695-11-10 Surface Resistivity (Dry) 1.00E+13 Ω/sq ASTM D257
Regulatory & Compliance
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Technical Details & Test Data
- Injection moulding of EPIMIX PBT/PET
Epimix PBT-PET GFR 55 BK Q1F502 can be processed between 220 and 270°C, depending on the grade used.
The following barrel settings are recommended:
Material Zone 1 (Hopper) Zone 2 Zone 3 Zone 4 (Nozzle) Unfilled Grades 230 - 240°C 235 - 250°C 235 - 250°C 240 - 260°C Impact M. Grades 220 - 235°C 225 - 240°C 225 - 240°C 235 - 255°C Flame Ret. Grades 220 - 230°C 225 - 240°C 230 - 245°C 235 - 260°C Reinforced Grades 235 - 260°C 240 - 260°C 250 - 265°C 260 - 270°C Tool temperature:
Mould temperature is always a compromise. On the one hand, tool temperature should be as a high as possible to give optimum crystallization and dimensional, optimal surface finish and optimal mechanical performance. On the other hand, lower tool temperature can significantly cut cycle time. For Epimix PBT-PET GFR 55 BK Q1F502, 80°C should be maintained as a minimum. For different grades values of 90-110°C are preferred.
Pressure and speed:
Injection pressure should generally be around 70 to 100 Mpa; this results in a minimum clamping force of the moulding machine in tonnes of 0.7 times the projected surface area in cm²
Holding pressure is generally in the area of 80 Mpa.
For glassfibre reinforced compounds, the screw speed should be kept low, a rough indication is as follows:
Screw diameter (mm) Maximum rpm 20 100 30 95 40 70 50 60 60 50 70 40 80 35 >80 301 Back pressure should be kept to a practical minimum.
- Moulding temperatures
Epimix PBT-PET GFR 55 BK Q1F502 can be processed between 220 and 270°C, depending on the grade used.
The following barrel settings are recommended:
Material Zone 1 (Hopper) Zone 2 Zone 3 Zone 4 (Nozzle) Unfilled Grades 230 - 240°C 235 - 250°C 235 - 250°C 240 - 260°C Impact M. Grades 220 - 235°C 225 - 240°C 225 - 240°C 235 - 255°C Flame Ret. Grades 220 - 230°C 225 - 240°C 230 - 245°C 235 - 260°C Reinforced Grades 235 - 260°C 240 - 260°C 250 - 265°C 260 - 270°C Tool temperature:
Mould temperature is always a compromise. On the one hand, tool temperature should be as a high as possible to give optimum crystallization and dimensional, optimal surface finish and optimal mechanical performance. On the other hand, lower tool temperature can significantly cut cycle time. For Epimix PBT-PET GFR 55 BK Q1F502, 80°C should be maintained as a minimum. For different grades values of 90-110°C are preferred.
Pressure and speed:
Injection pressure should generally be around 70 to 100 Mpa; this results in a minimum clamping force of the moulding machine in tonnes of 0.7 times the projected surface area in cm²
Holding pressure is generally in the area of 80 Mpa.
For glassfibre reinforced compounds, the screw speed should be kept low, a rough indication is as follows:
Screw diameter (mm) Maximum rpm 20 100 30 95 40 70 50 60 60 50 70 40 80 35 >80 301 Back pressure should be kept to a practical minimum.
- Use of regrind
Regrind sprues and runners can be used on most materials. It is not recommended to use regrind on FR grades. When regrind is used, observe these simple rules:
- Use a constant ratio of regrind and virgin material. When a material has been processed once, its viscosity and fibre length have been decreased. Using varying rations of regrind can lead to variations in dimensions, mechanical performance and processing characteristics.
- Either feed the regrind straight back into the machine or pre-dry the regrind before usage.
- Store regrind in a dry, clean place to avoid contamination and excess moisture.
- Ensure sharp cutting blades to keep dust generation to a minimum; cut glass fibre reinforced material when it is still hot.
- Clean the grinder regularly to avoid build up of dust.
- Do not use splayed, discoloured or degraded parts and runners.
- Test conditions
Laboratory conditions are 23 ±2°C and 45-55 % RH.