VALOX™ 牌号 745 种类 PBT
产品说明 30% mineral reinforced polyester improved toughness and low warpage. Typical applications are telephone ringer frames and card racks.

SABIC VALOX™ PBT 745 物性表

属性典型值UNITS测试手段
MECHANICAL
Tensile Stress, yld, Type I, 50 mm/min48MPaASTM D638
Tensile Stress, brk, Type I, 50 mm/min46MPaASTM D638
Flexural Stress, yld, 1.3 mm/min, 50 mm span89MPaASTM D790
Flexural Modulus, 1.3 mm/min, 50 mm span3440MPaASTM D790
Hardness, Rockwell R112-ASTM D785
IMPACT
Izod Impact, unnotched, 23°C1602J/mASTM D4812
Izod Impact, notched, 23°C80J/mASTM D256
THERMAL
HDT, 0.45 MPa, 6.4 mm, unannealed160°CASTM D648
HDT, 1.82 MPa, 6.4 mm, unannealed87°CASTM D648
CTE, -40°C to 40°C, flow7.56E-051/°CASTM E831
CTE, 60°C to 138°C, flow1.39E-041/°CASTM E831
Relative Temp Index, Elec105°CUL 746B
Relative Temp Index, Mech w/impact105°CUL 746B
Relative Temp Index, Mech w/o impact105°CUL 746B
PHYSICAL
Specific Gravity1.46-ASTM D792
Specific Volume0.69cm³/gASTM D792
Water Absorption, (23°C/24hrs)0.09%ASTM D570
Mold Shrinkage, flow, 3.2 mm0.8-1%SABIC method
Mold Shrinkage, flow, 1.5-3.2 mm0.6-0.8%SABIC method
Mold Shrinkage, xflow, 3.2 mm0.8-1%SABIC method
Mold Shrinkage, xflow, 1.5-3.2 mm0.6-0.8%SABIC method
ELECTRICAL
Volume Resistivity6.9E+16Ω.cmASTM D257
Dielectric Strength, in air, 3.2 mm23.2kV/mmASTM D149
Dielectric Strength, in oil, 1.6 mm24.8kV/mmASTM D149
Relative Permittivity, 100 Hz3.3-ASTM D150
Relative Permittivity, 1 MHz3.2-ASTM D150
Dissipation Factor, 100 Hz0.002-ASTM D150
Dissipation Factor, 1 MHz0.014-ASTM D150
Arc Resistance, Tungsten {PLC}5PLC CodeASTM D495
Hot Wire Ignition {PLC)2PLC CodeUL 746A
High Voltage Arc Track Rate {PLC}3PLC CodeUL 746A
High Ampere Arc Ign, surface {PLC}0PLC CodeUL 746A
Comparative Tracking Index (UL) {PLC}2PLC CodeUL 746A
FLAME CHARACTERISTICS
UL Yellow Card LinkE45587-236820--
UL Recognized, 94HB Flame Class Rating1.47mmUL 94
Injection Molding
Drying Temperature120°C
Drying Time3-4Hrs
Drying Time (Cumulative)12Hrs
Maximum Moisture Content0.02%
Melt Temperature255-275°C
Nozzle Temperature255-270°C
Front - Zone 3 Temperature255-265°C
Middle - Zone 2 Temperature250-260°C
Rear - Zone 1 Temperature245-255°C
Mold Temperature65-95°C
Back Pressure0.3-0.7MPa
Screw Speed50-80rpm
Shot to Cylinder Size40-80%
Vent Depth0.025-0.038mm
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