物性表: | |||
Physical Properties | Metric | English | Comments |
---|---|---|---|
Density | 1.22 g/cc | 0.0441 lb/in³ | ASTM D792 |
Water Absorption | 1.0 % | 1.0 % | 24 hours; ASTM D570 |
Moisture Absorption at Equilibrium | 2.2 % | 2.2 % | ASTM D570 |
Water Absorption at Saturation | 7.1 % | 7.1 % | ASTM D570 |
Linear Mold Shrinkage | 0.0040 - 0.0080 cm/cm | 0.0040 - 0.0080 in/in | ASTM D955 |
Mechanical Properties | Metric | English | Comments |
Hardness, Rockwell M | 95 | 95 | ASTM D785 |
Tensile Strength, Ultimate | 124 MPa | 18000 psi | ASTM D638 |
Elongation at Break | 3.0 % | 3.0 % | ASTM D638 |
Flexural Yield Strength | 179 MPa | 26000 psi | ASTM D790 |
Flexural Modulus | 5.50 GPa | 798 ksi | ASTM D790 |
Compressive Yield Strength | 172 MPa | 24900 psi | at 1% deformation; ASTM D695 |
Shear Strength | 76.0 MPa | 11000 psi | ASTM D732 |
Izod Impact, Notched | 0.500 J/cm @Thickness 3.17 mm |
0.937 ft-lb/in @Thickness 0.125 in |
ASTM D256 |
Thermal Properties | Metric | English | Comments |
CTE, linear | 27.0 µm/m-°C @Temperature -40.0 - 82.0 °C |
15.0 µin/in-°F @Temperature -40.0 - 180 °F |
|
Melting Point | 260 °C | 500 °F | ASTM D1525 |
Deflection Temperature at 1.8 MPa (264 psi) | 245 °C @Thickness 3.17 mm |
473 °F @Thickness 0.125 in |
Unannealed; ASTM D648 |
Flammability, UL94 | HB | HB | |
Oxygen Index | 25 % | 25 % | ASTM D2863 |
在产品设计时,一定要考虑吸湿性对几何稳定性的影响。为了提高PA66的机械特性,经常加入各种各样的改性剂。玻璃就是最常见的添加剂,有时为了提高抗冲击性还加入合成橡胶,如EPDM和SBR等。PA66的粘性较低,因此流动性很好(但不如PA6)。这个性质可以用来加工很薄的元件。它的粘度对温度变化很敏感。

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