Covestro Bayblend® T88 GF-20 Polycarbonate + SAN Glass Filled Impact Grade

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Covestro Bayblend® T88 GF-20 Polycarbonate + SAN Glass Filled Impact Grade
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); SAN Polymer
Material Notes:	Rubber modified (PC+SAN) blend; 20% glass fiber filled; Vicat/B 120 temperature = 130 °C; optimized heat ageing- and UV-stability; very good flow; tensile modulus = 7200 MPa; good heat resistance As of 1 September 2015, Bayer MaterialScience was separated from Bayer AG and officially adopted its new name – Covestro.
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Physical Properties	Original Value	Comments

Density	1.29 g/cc	ISO 1183
Filler Content	20 %	Glass, Method A; b.o. ISO 3451-1
Moisture Absorption at Equilibrium	0.20 %	ISO 62
Water Absorption at Saturation	0.40 %	ISO 62
Viscosity	205000 cP @Shear Rate 1000 1/s, Temperature 260 °C	Melt; b.o. ISO 11443-A
Linear Mold Shrinkage, Flow	0.0020 - 0.0040 cm/cm @Thickness 3.00 mm	50x105x3 mm; 260 °C / MT 80 °C; b.o. ISO 2577
Linear Mold Shrinkage, Transverse	0.0030 - 0.0050 cm/cm @Thickness 3.00 mm	50x105x3 mm; 260 °C / MT 80 °C; b.o. ISO 2577
Melt Flow	18.06 g/10 min @Load 5.00 kg, Temperature 260 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Tensile Strength at Break	120 MPa	5 mm/min; ISO 527-1/-2
Tensile Strength, Yield	120 MPa	5 mm/min; ISO 527-1/-2
Elongation at Break	2.4 %	5 mm/min; ISO 527-1/-2
Elongation at Yield	2.4 %	5 mm/min; ISO 527-1/-2
Tensile Modulus	7500 MPa	1 mm/min; ISO 527-1/-2
Izod Impact, Notched (ISO)	8.00 kJ/m² @Temperature 23.0 °C	ISO 180-A
	8.00 kJ/m² @Temperature -30.0 °C	ISO 180-A
Izod Impact, Unnotched (ISO)	38.0 kJ/m² @Temperature 23.0 °C	ISO 180-U
	38.0 kJ/m² @Temperature -30.0 °C	ISO 180-U

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+14 ohm-cm	IEC 60093
Surface Resistance	1.00e+17 ohm	IEC 60093
Dielectric Constant	3.2 @Frequency 1e+6 Hz	IEC 60250
	3.3 @Frequency 100 Hz	IEC 60250
Dielectric Strength	35.0 kV/mm	1 mm; IEC 60243-1
Dissipation Factor	0.0025 @Frequency 100 Hz	IEC 60250
	0.0085 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	150 V	Solution A; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	30.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
CTE, linear, Transverse to Flow	65.0 µm/m-°C @Temperature 23.0 - 55.0 °C	ISO 11359-1,-2
Deflection Temperature at 0.46 MPa (66 psi)	129 °C	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	119 °C	ISO 75-1/-2
Vicat Softening Point	128 °C @Load 5.10 kg	50°C/h; ISO 306
	130 °C @Load 5.10 kg	120°C/h; ISO 306
Flammability, UL94	HB @Thickness 0.850 mm	IEC 60695-11-10

Processing Properties	Original Value	Comments
Melt Temperature	260 °C	Injection Molding; ISO 294
Mold Temperature	80.0 °C	Injection Molding; ISO 294
Injection Velocity	540 mm/sec	ISO 294

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PB09739 / 92579

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