SK Chemicals SKYGREEN® PETG 2008 Specially Formulated PET Copolymer Resin

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SK Chemicals SKYGREEN® PETG 2008 Specially Formulated PET Copolymer Resin (discontinued **)
Categories:	Polymer; Thermoplastic; Polyester, TP; Polyethylene Terephthalate (PET); PETG Copolyester
Material Notes:	SKYGREEN PETG is an amorphous copolyester in which a certain amount of ethylene glycol is replaced with 1,4-cyclohexane dimethanol (CHDM), which prevent crystallization, leading to improved processability and clarity. Skygreen® PETG provides a material having outstanding toughness, clarity, color, chemical resistance, and resistance to stress whitening. It can readily be thermoformed for extrusion blow molded. It is superior to acrylic for toughness, and superior to polycarbonate for processability. Applications: Extrusion Sheet: architecture protective cover, display signs, industrial products. Extrusion Film: blister packaging, food packaging containers, electrical & electronic packaging, pharmaceutical & medical packaging. Injection Molding: toys, refrigerator parts, electric & electronic parts, smart cards, pen caps, medical devices and tools. Extrusion Blow Molding: bottles for cosmetics, soaps, shampoos, detergents, etc. Information provided by SK Chemicals.
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Physical Properties	Original Value	Comments

Specific Gravity	1.27 g/cc	ASTM D792
Water Absorption	0.13 %	24 hr immersion; ASTM D570
Linear Mold Shrinkage	0.0030 - 0.0060 cm/cm	ASTM D955

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	110	ASTM D785
Tensile Strength at Break	28.0 MPa	50 mm/min; ASTM D638
Tensile Strength, Yield	50.0 MPa	50 mm/min; ASTM D638
Elongation at Break	140 %	50mm/min; ASTM D638
Flexural Strength	73.0 MPa	1.27 mm/min; ASTM D790
Flexural Modulus	2.10 GPa	1.27 mm/min; ASTM D790
Izod Impact, Notched	100 J/m	ASTM D256
Impact Test	33.0 J @Thickness 3.20 mm	impact resistance energy, max. load in plaque, 220 m/min; ASTM D3763

Electrical Properties	Original Value	Comments
Volume Resistivity	1.00e+15 ohm-cm	ASTM D257
Surface Resistance	1.00e+16 ohm	ASTM D257
Dielectric Constant	2.4 @Frequency 1e+6 Hz	ASTM D150
	2.6 @Frequency 1000 Hz	ASTM D150
Dielectric Strength	16.0 kV/mm	short-time, 500v/sec; ASTM D149
Dissipation Factor	0.0050 @Frequency 1000 Hz	ASTM D150
	0.023 @Frequency 1e+6 Hz	ASTM D150

Thermal Properties	Original Value	Comments
Deflection Temperature at 0.46 MPa (66 psi)	70.0 °C	ASTM D648
Deflection Temperature at 1.8 MPa (264 psi)	64.0 °C	ASTM D648
Vicat Softening Point	85.0 °C	at 1 kg load; ASTM D1525
Glass Transition Temp, Tg	80.0 °C	DSC
Flammability, UL94	HB @Thickness 1.60 mm
	V-2 @Thickness 3.20 mm

Processing Properties	Original Value	Comments
Processing Temperature	45.0 °C	Roll 1 Temperature
	54.0 °C	Roll 2 Temperature
	63.0 °C	Roll 3 Temperature
	210 °C	Cylinder 4 Temperature
	245 °C	Cylinder 2 and Cylinder 3 Temperature
	245 °C	Screen, Me1t Pump, and Connection Temperature
Feed Temperature	240 °C
Nozzle Temperature	245 °C
Zone 1	356 °F	Barrel Temp of Main Extruder
	383 °F	Extrusion Blow Molding
Zone 2	410 °F	Extrusion Blow Molding
	473 °F	Barrel Temp of Main Extruder
Zone 3	410 °F	Extrusion Blow Molding
	509 °F	Barrel Temp of Main Extruder
Zone 4	410 °F	Extrusion Blow Molding
	500 °F	Barrel Temp of Main Extruder
Zone 5	464 °F	Barrel Temp of Main Extruder
Adapter Temperature	200 °C	Extrusion Blow Molding
	245 °C
Die Temperature	383 °F	Extrusion Blow Molding (Die Tip)
	477 °F	Die Zone 1
	480 °F	Die Zone 2
Head Temperature	185 °C	Extrusion Blow Molding
Mold Temperature	12.0 - 20.0 °C	Extrusion Blow Molding
	40.0 °C
	40.0 - 70.0 °C	For Thermoforming (Forming time = 3-10 sec)
Drying Temperature	65.0 °C
Dry Time	6 - 12 hour
Injection Pressure	5.50 MPa	1st Pressure
Hold Pressure	4.00 MPa
	8.30 MPa	Extrusion Melt Pressure
Back Pressure	0.500 MPa
Cycle Time - Injection	2.0 sec
	15 sec	2nd Pressure Time
Cycle Time - Cooling	15 sec

**
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