Covestro Makrolon® LQ2647 Optical Grade Polycarbonate

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Covestro Makrolon® LQ2647 Optical Grade Polycarbonate
Categories:	Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Optical Grade
Material Notes:	Main characteristics: • High toughness • Good heat resistance • Glass-like transparency, optical quality • High dimensional accuracy and stability Grade characteristics: • Optical lens, safety glasses • Medium viscosity, easy release • UV stabilized 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

Bulk Density	0.660 g/cc	pellets; ISO 60
Density	1.20 g/cc	ISO 1183-1
Moisture Absorption at Equilibrium	0.12 %	ISO 62, 50% RH
Water Absorption at Saturation	0.30 %	ISO 62
Water Vapor Transmission	15.0 g/m²/day @Thickness 0.100 mm	85% RH, film; ISO 15106-1
Oxygen Transmission	67.0 cc-mm/m²-24hr-atm @Thickness 0.100 mm	670 cc/m²-24hr-bar; film; b.o. ISO 2556
	70.0 cc-mm/m²-24hr-atm @Thickness 0.0254 mm	2760 cc/m²-24hr-bar; film; b.o. ISO 2556
Nitrogen Transmission	12.0 cc-mm/m²-24hr-atm @Thickness 0.100 mm	120 cc/m²-24hr-bar; film; b.o. ISO 2556
	13.0 cc-mm/m²-24hr-atm @Thickness 0.0254 mm	510 cc/m²-24hr-bar; film; b.o. ISO 2556
Carbon Dioxide Transmission	380 cc-mm/m²-24hr-atm @Thickness 0.100 mm	3800 cc/m²-24hr-bar; film; b.o. ISO 2556
	429 cc-mm/m²-24hr-atm @Thickness 0.0254 mm	16900 cc/m²-24hr-bar; film; b.o. ISO 2556
Linear Mold Shrinkage	0.0060 - 0.0080 cm/cm	parallel/normal; b.o. ISO 2577
Linear Mold Shrinkage, Flow	0.0070 cm/cm @Thickness 2.00 mm	60x60x2 mm; 500 bar; ISO 294-4
Linear Mold Shrinkage, Transverse	0.0075 cm/cm @Thickness 2.00 mm	60x60x2 mm; 500 bar; ISO 294-4
Melt Flow	13 g/10 min @Load 1.20 kg, Temperature 300 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Puncture Resistance	5400 N @Temperature 23.0 °C	ISO 6603-2
	6300 N @Temperature -30.0 °C	ISO 6603-2
Ball Indentation Hardness	116 MPa	ISO 2039-1
Tensile Strength at Break	70.0 MPa	50 mm/min; ISO 527-1,-2
Tensile Strength, Yield	67.0 MPa	50 mm/min; ISO 527-1,-2
Elongation at Break	>= 50 %	Nominal, 50 mm/min; ISO 527-1,-2
	130 %	50 mm/min; b.o. ISO 527-1,-2
Elongation at Yield	6.1 %	50 mm/min; ISO 527-1,-2
Tensile Modulus	2400 MPa	1 mm/min; ISO 527-1,-2
Flexural Strength	98.0 MPa	2 mm/min; ISO 178
Flexural Yield Strength	74.0 MPa @Strain 3.5 %	2 mm/min; ISO 178
Flexural Modulus	2400 MPa	2 mm/min; ISO 178
Flexural Strain at Yield	7.0 %	2 mm/min; ISO 178
Izod Impact, Notched (ISO)	15.0 kJ/m² @Thickness 3.20 mm, Temperature -30.0 °C	complete break; b.o. ISO 180-A
	70.0 kJ/m² @Thickness 3.20 mm, Temperature 23.0 °C	partial break; b.o. ISO 180-A
Charpy Impact Unnotched	NB @Temperature 23.0 °C	ISO 179-1eU
	NB @Temperature -30.0 °C	ISO 179-1eU
	NB @Temperature -60.0 °C	ISO 179-1eU
Charpy Impact, Notched	14.0 kJ/m² @Thickness 3.00 mm, Temperature -30.0 °C	complete break; ISO 7391/b.o. ISO 179-1eA
	70.0 kJ/m² @Thickness 3.00 mm, Temperature 23.0 °C	partial break; ISO 7391/b.o. ISO 179-1eA
Puncture Energy	60.0 J @Temperature 23.0 °C	ISO 6603-2
	65.0 J @Temperature -30.0 °C	ISO 6603-2
Tensile Creep Modulus, 1 hour	2200 MPa	ISO 899-1
Tensile Creep Modulus, 1000 hours	1900 MPa	ISO 899-1

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+14 ohm-cm	IEC 60093
Surface Resistance	1.00e+16 ohm	IEC 60093
Dielectric Constant	3.0 @Frequency 1e+6 Hz	IEC 60250
	3.1 @Frequency 100 Hz	IEC 60250
Dielectric Strength	34.0 kV/mm @Thickness 1.00 mm	IEC 60243-1
Dissipation Factor	0.00050 @Frequency 100 Hz	IEC 60250
	0.0095 @Frequency 1e+6 Hz	IEC 60250
Comparative Tracking Index	125 V	CTI M; Solution B; IEC 60112
	250 V	Solution A; IEC 60112

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	65.0 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
Thermal Conductivity	0.200 W/m-K	cross-flow; ISO 8302
Hot Ball Pressure Test	135 °C	IEC 60695-10-2
Deflection Temperature at 0.46 MPa (66 psi)	135 °C	ISO 75-1,-2
Deflection Temperature at 1.8 MPa (264 psi)	123 °C	ISO 75-1,-2
Vicat Softening Point	143 °C @Load 5.10 kg	50°C/h; ISO 306
	144 °C @Load 5.10 kg	120°C/h; ISO 306
Glass Transition Temp, Tg	144 °C	10°C/min; ISO 11357-1,-2
UL RTI, Electrical	125 °C @Thickness 1.50 mm	UL 746B
UL RTI, Mechanical with Impact	115 °C @Thickness 1.50 mm	UL 746B
UL RTI, Mechanical without Impact	125 °C @Thickness 1.50 mm	UL 746B
Flammability, UL94	HB @Thickness 2.50 mm
	V-2 @Thickness 0.750 mm
Flash Point	480 °C	ASTM D 1929
	550 °C	self ignition; ASTM D 1929
Oxygen Index	28 %	Method A; ISO 4589-2

Optical Properties	Original Value	Comments
Refractive Index	1.586	Procedure A; ISO 489
Abbe Number	30
Haze	<= 0.50 % @Thickness 3.00 mm	ISO 14782
Transmission, Visible	>= 87 % @Thickness 4.00 mm	ISO 13468-2
	88 % @Thickness 3.00 mm	ISO 13468-2
	89 % @Thickness 1.00 mm	ISO 13468-2
	89 % @Thickness 2.00 mm	ISO 13468-2

Processing Properties	Original Value	Comments
Melt Temperature	290 °C	Injection molding; ISO 294
Mold Temperature	80.0 °C	Injection molding; ISO 294
Injection Velocity	200 mm/sec	ISO 294

Descriptive Properties
Electrolytic Corrosion	A1	IEC 60426

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PB09647 / 150779

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