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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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Product Types

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Material

Plastics
Heat resistant, Cold stable, Impact resistant, Low moisture intake, Chemical 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, normal 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 7391/b.o. ISO 180/A 23 °C kJ/m² 60
Izod notched impact strength ISO 7391/b.o. 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

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Technical Data Sheet
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Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com
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