SK Chemicals SKYPEL LX780A Thermoplastic Polyester Elastomer

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SK Chemicals SKYPEL LX780A Thermoplastic Polyester Elastomer
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Polyester TPE
Material Notes:	SKYPEL LX780A is a thermoplastic polyester elastomer resin with 80A hardness based on shore A scale. It is widely used for injection molding and extrusion applications. Tensile property tests on ASTM Type IV dumbbells diecut from injection molded slab 2mm thick. Crosshead speed 50 mm/min. Information provided by SK Chemicals
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Physical Properties	Metric	English	Comments

Specific Gravity	1.06 g/cc	1.06 g/cc	ASTM D792
Water Absorption	0.90 % @Time 86400 sec	0.90 % @Time 24.0 hour	ASTM D570
Linear Mold Shrinkage	0.0070 cm/cm	0.0070 in/in	ASTM D955
Melt Flow	25 g/10 min @Load 2.16 kg, Temperature 220 °C	25 g/10 min @Load 4.76 lb, Temperature 428 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	<= 80	<= 80	ASTM D2240
	79 @Time 15.0 sec	79 @Time 0.00417 hour	ASTM D2240
Tensile Strength at Break	27.5 MPa	3990 psi	ASTM D638
Tensile Stress at Strain	0.588 MPa @Strain 5.0 %	85.3 psi @Strain 5.0 %	ASTM D638
	1.08 MPa @Strain 10 %	156 psi @Strain 10 %	ASTM D638
Elongation at Break	1500 %	1500 %	ASTM D638
100% Modulus	3.43 MPa @Strain 100 %	498 psi @Strain 100 %	ASTM D638
Tear Strength	84.0 kN/m @Thickness 2.00 mm	479 pli @Thickness 0.0787 in	Crosshead speed 51mm/min.; ASTM D1004
Compression Set	57 % @Temperature 70.0 °C, Time 79200 sec	57 % @Temperature 158 °F, Time 22.0 hour	ASTM D395

Thermal Properties	Metric	English	Comments
Melting Point	192 °C	378 °F	DSC Peak; 10°C/min.; ASTM D3418

Processing Properties	Metric	English	Comments
Rear Barrel Temperature	195 °C	383 °F	Extrusion
	205 °C	401 °F	Injection
Middle Barrel Temperature	210 °C	410 °F	Extrusion
	210 °C	410 °F	Injection
Front Barrel Temperature	210 °C	410 °F	Extrusion
	215 °C	419 °F	Injection
Nozzle Temperature	220 °C	428 °F
Die Temperature	210 °C	410 °F	Extrusion
Melt Temperature	215 °C	419 °F	Extrusion
Mold Temperature	35.0 °C	95.0 °F

Descriptive Properties
Aesthetics	Low tack & Silky feel

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PSK9921 / 291437

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