- Plastics
Makroblend® UT250 HR
(PC+PET)-blend, impact modified, improved hydrolysis resistance compared to standard Makroblend UT grades, injection molding grade. Good low-temperature impact strength, flowability, and chemical resistance. Applications include lead-acid battery housings.
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About
Product Types
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Material
- Plastics
- Heat resistant, Chemical resistant, Low moisture intake, Cold stable, Impact resistant
General Characterization
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Storage Conditions
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Sampling
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Packaging Type
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Technical Properties & Datasheets
| Property Name | Standard | Test condition | Unit | Value |
|---|---|---|---|---|
| Barrel Temperatures - Front | - | °C | 255 - 265 | |
| Barrel Temperatures - Middle | - | °C | 250 - 260 | |
| Barrel Temperatures - Nozzle | - | °C | 255 - 270 | |
| Barrel Temperatures - Rear | - | °C | 245 - 255 | |
| Dry Air Drying Temperature | - | °C | 110 | |
| Dry Air Drying Time | - | h | 2 - 4 | |
| Hold Pressure (% of injection pressure) | - | % | 50 - 75 | |
| Melt temperatures | - | °C | 260 - 280 | |
| Moisture Content max. (%) | - | % | <= 0,01 | |
| Mold Temperatures | - | °C | 50 - 100 | |
| Peripheral Screw Speed | - | m/s | 0.05 - 0.2 | |
| Plastic Back Pressure (specific) | - | bar | 50 - 150 | |
| Shot-to-Cylinder Size | - | % | 30 - 70 | |
| Standard Melt temperature | - | °C | 270 | |
| Vent Depth | - | mm | 0.025 - 0.075 |
| Property Name | Standard | Test condition | Unit | Value |
|---|---|---|---|---|
| Burning behavior UL 94 | UL 94 | 0.75 mm | Class | HB (Bayer Test) |
| Burning behavior UL 94 (1.5 mm) | UL 94 | Class | HB (Bayer Test) | |
| Coefficient of linear thermal expansion, normal | ISO 11359-1,-2 | 23 to 55 °C | 10^-4^/K | 0.75 |
| Coefficient of linear thermal expansion, parallel | ISO 11359-1,-2 | 23 to 55 °C | 10^-4^/K | 0.75 |
| Temperature of deflection under load | ISO 75-1,-2 | 0.45 MPa | °C | 123 |
| Temperature of deflection under load | ISO 75-1,-2 | 1.80 MPa | °C | 102 |
| Thermal conductivity, through-plane | ISO 8302 | 23 °C; 50 % r. h. | W/(m*K) | 0.2 |
| Vicat softening temperature | ISO 306 | 50 N; 120 °C/h | °C | 137 |
| Property Name | Standard | Test condition | Unit | Value |
|---|---|---|---|---|
| Charpy impact strength | ISO 179/1eU | -30 °C | kJ/m² | N |
| Charpy impact strength | ISO 179/1eU | 23 °C | kJ/m² | N |
| Charpy notched impact strength | ISO 179/1eA | -30 °C | kJ/m² | 35 |
| Charpy notched impact strength | ISO 179/1eA | 23 °C | kJ/m² | 65 |
| Flexural modulus | ISO 178 | 2 mm/min | MPa | 2200 |
| Flexural strength | ISO 178 | 2 mm/min | MPa | 82 |
| Flexural stress at 3.5 % strain | ISO 178 | 2 mm/min | MPa | 68 |
| Izod impact strength | ISO 180/1C | -30 °C | kJ/m² | N |
| Izod impact strength | ISO 180/1C | 23 °C | kJ/m² | N |
| Izod notched impact strength | ISO 21305/based on ISO 180/A | 23 °C | kJ/m² | 60 |
| Izod notched impact strength | ISO 21305/based on ISO 180/A | -30 °C | kJ/m² | 40 |
| Nominal strain at break | ISO 527-1,-2 | 50 mm/min | % | 110 |
| Puncture energy | ISO 6603-2 | -30 °C | J | 47 |
| Puncture energy | ISO 6603-2 | 23 °C | J | 45 |
| Puncture impact properties - maximum force | ISO 6603-2 | -30 °C | N | 5300 |
| Puncture impact properties - maximum force | ISO 6603-2 | 23 °C | N | 4300 |
| Stress at break | ISO 527-1,-2 | 50 mm/min | MPa | 57 |
| Tensile modulus | ISO 527-1,-2 | 1 mm/min | MPa | 2200 |
| Yield strain | ISO 527-1,-2 | 50 mm/min | % | 4.9 |
| Yield stress | ISO 527-1,-2 | 50 mm/min | MPa | 55 |
| Property Name | Standard | Test condition | Unit | Value |
|---|---|---|---|---|
| Melt volume-flow rate | ISO 1133 | 270 °C | cm³/10 min | 22 |
| Molding shrinkage, parallel/normal | b.o. ISO 2577 | Value range based on general practical experience (600bar) | % | 0.6 - 0.8 |
| Property Name | Standard | Test condition | Unit | Value |
|---|---|---|---|---|
| Drying temperature | ISO 294 | °C | 110 | |
| Drying time | ISO 294 | h | 4 | |
| Injection molding - Melt temperature | ISO 294 | °C | 270 | |
| Injection molding - Mold temperature | ISO 294 | °C | 70 | |
| Residual humidity | ISO 294 | % | <0.01 |
| Property Name | Standard | Test condition | Unit | Value |
|---|---|---|---|---|
| Density | ISO 1183-1 | kg/m³ | 1215 | |
| Water absorption (equilibrium value) | ISO 62 | 23 °C; 50 % r. h. | % | 0.16 |
| Water absorption (saturation value) | ISO 62 | Water at 23 °C | % | 0.5 |
Downloads
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Technical Data Sheet
-
Safety Data SheetNo direct download available, please visit www.productsafetyfirst.covestro.com
