Gromax 1172LL TPE物性表参数

Physical Properties	Metric	English	Comments

Specific Gravity	1.276 g/cc	1.276 g/cc	ISO 1183
Moisture Absorption	0.300 % @Time 86400 sec	0.300 % @Time 24.0 hour	ISO 62
Linear Mold Shrinkage	0.019 cm/cm	0.019 in/in	ISO 294-4
Melt Flow	30 g/10 min @Load 2.16 kg, Temperature 230 °C	30 g/10 min @Load 4.76 lb, Temperature 446 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	72	72	ISO 868
Tensile Strength	39.2 MPa	5690 psi	ISO 527
Elongation at Break	237 %	237 %	ISO 527
Tensile Modulus	0.854 GPa	124 ksi	ISO 527
Flexural Modulus	0.284 GPa	41.2 ksi	ISO 178
Charpy Impact, Notched	1.40 J/cm²	6.66 ft-lb/in²	ISO 179/1eA

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.28e+16 ohm-cm	1.28e+16 ohm-cm	IEC 60093
Surface Resistance	9.00e+13 ohm	9.00e+13 ohm	IEC 60093
Dielectric Strength	18.14 kV/mm @Thickness 2.00 mm	460.8 kV/in @Thickness 0.0787 in	IEC 60243-1

Thermal Properties	Metric	English	Comments
Melting Point	218 °C	424 °F	ISO 3146C

Processing Properties	Metric	English	Comments
Rear Barrel Temperature	220 - 230 °C	428 - 446 °F
Middle Barrel Temperature	230 - 260 °C	446 - 500 °F
Front Barrel Temperature	230 - 260 °C	446 - 500 °F
Nozzle Temperature	230 - 260 °C	446 - 500 °F
Mold Temperature	20.0 - 50.0 °C	68.0 - 122 °F
Injection Pressure	30.0 - 100 MPa @Time 2.00 - 10.0 sec	4350 - 14500 psi @Time 0.000556 - 0.00278 hour
Hold Pressure	5.00 - 40.0 MPa @Time 10.0 - 30.0 sec	725 - 5800 psi @Time 0.00278 - 0.00833 hour
Screw Speed	40 - 80 rpm	40 - 80 rpm