Physical Properties | Metric | English | Comments | ||
---|---|---|---|---|---|
Density | 1.40 g/cc | 0.0506 lb/in³ | ISO 1183 | ||
Water Absorption | 0.80 % | 0.80 % | ISO 62 | ||
Moisture Absorption at Equilibrium | 0.20 % | 0.20 % | 23°C/50% R.H.; ISO 62 | ||
Linear Mold Shrinkage | 0.020 cm/cm | 0.020 in/in | ASTM Data; MD | ||
Linear Mold Shrinkage, Flow | 0.021 cm/cm | 0.021 in/in | ISO Data | ||
Linear Mold Shrinkage, Transverse | 0.021 cm/cm | 0.021 in/in | ISO Data | ||
Melt Flow | 2.9 g/10 min @Load 2.16 kg, Temperature 190 °C |
2.9 g/10 min @Load 4.76 lb, Temperature 374 °F |
ISO 1133 | ||
Mechanical Properties | Metric | English | Comments | ||
Tensile Strength, Yield | 64.0 MPa | 9280 psi | 50mm/min; ISO 527 | ||
64.0 MPa | 9280 psi | 2 in/min; ASTM Test | |||
33.0 MPa @Temperature 80.0 °C |
4790 psi @Temperature 176 °F |
ISO Data | |||
Elongation at Break | 30 % | 30 % | 50mm/min, Nominal strain; ISO 527 | ||
Elongation at Yield | 11 % | 11 % | 50mm/min; ISO 527 | ||
11 % | 11 % | 2 in/min; ASTM Test | |||
10 % @Temperature 80.0 °C |
10 % @Temperature 176 °F |
ISO Data | |||
Tensile Modulus | 2.59 GPa | 376 ksi | ASTM Test | ||
2.60 GPa | 377 ksi | 1mm/min; ISO 527 | |||
Flexural Modulus | 2.45 GPa | 355 ksi | ASTM Test | ||
2.60 GPa | 377 ksi | ISO Data | |||
Izod Impact, Notched | 0.694 J/cm @Temperature -40.0 °C |
1.30 ft-lb/in @Temperature -40.0 °F |
ASTM Test | ||
0.801 J/cm @Thickness 3.17 mm |
1.50 ft-lb/in @Thickness 0.125 in |
ASTM Test | |||
Izod Impact, Notched (ISO) | 6.00 kJ/m² | 2.86 ft-lb/in² | ISO Test | ||
5.00 kJ/m² @Temperature -40.0 °C |
2.38 ft-lb/in² @Temperature -40.0 °F |
ISO Test | |||
Charpy Impact Unnotched | 26.0 J/cm² | 124 ft-lb/in² | ISO 179 | ||
20.0 J/cm² @Temperature -30.0 °C |
95.2 ft-lb/in² @Temperature -22.0 °F |
ISO 179 | |||
Charpy Impact, Notched | 0.600 J/cm² | 2.86 ft-lb/in² | ISO 179 | ||
0.550 J/cm² @Temperature -30.0 °C |
2.62 ft-lb/in² @Temperature -22.0 °F |
ISO 179 | |||
Tensile Creep Modulus, 1 hour | 1800 MPa | 261000 psi | ISO 899 | ||
Tensile Creep Modulus, 1000 hours | 1300 MPa | 189000 psi | ISO 899 | ||
Electrical Properties | Metric | English | Comments | ||
Volume Resistivity | 1.00e+13 ohm-cm | 1.00e+13 ohm-cm | IEC 60093 | ||
Surface Resistance | 1.00e+13 ohm | 1.00e+13 ohm | IEC 60093 | ||
Dielectric Constant | 3.8 @Frequency 100 Hz |
3.8 @Frequency 100 Hz |
IEC 60250 | ||
3.8 @Frequency 1.00e+6 Hz |
3.8 @Frequency 1.00e+6 Hz |
IEC 60250 | |||
Dielectric Strength | 40.0 kV/mm | 1020 kV/in | IEC 60243-1 | ||
Dissipation Factor | 0.0010 @Frequency 100 Hz |
0.0010 @Frequency 100 Hz |
IEC 60250 | ||
0.0050 @Frequency 1.00e+6 Hz |
0.0050 @Frequency 1.00e+6 Hz |
IEC 60250 | |||
Comparative Tracking Index | 600 V | 600 V | IEC 60112 | ||
Thermal Properties | Metric | English | Comments | ||
CTE, linear | 60.0 µm/m-°C @Temperature -30.0 - 30.0 °C |
33.3 µin/in-°F @Temperature -22.0 - 86.0 °F |
ASTM Test | ||
CTE, linear, Parallel to Flow | 110 µm/m-°C | 61.1 µin/in-°F | ISO 11359 | ||
Melting Point | 166 °C | 331 °F | 10 K/min | ||
166 °C | 331 °F | ASTM Test | |||
Deflection Temperature at 0.46 MPa (66 psi) | 154 °C | 309 °F | ASTM Test | ||
156 °C | 313 °F | ISO 75 | |||
Deflection Temperature at 1.8 MPa (264 psi) | 95.0 °C | 203 °F | ISO 75 | ||
96.0 °C | 205 °F | ASTM Test | |||
Vicat Softening Point | 150 °C | 302 °F | (50 °C/h / 50N) - B/50; ISO 306 | ||
Flammability, UL94 | HB @Thickness 1.50 mm |
HB @Thickness 0.0591 in |
|||
HB @Thickness 0.750 mm |
HB @Thickness 0.0295 in |
||||
Oxygen Index | 15 % | 15 % | ISO 4589-1/-2 | ||
Processing Properties | Metric | English | Comments | ||
Melt Temperature | 200 °C | 392 °F | Injection molding | ||
Mold Temperature | 110 °C | 230 °F | Injection molding | ||
Injection Velocity | 90.0 mm/sec | 3.54 in/sec | Injection molding | ||
De |
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Color | Natural | ||||
Commercial Status | Active America | ||||
FDA | 21 CFR 177.1500 | ||||
Form | Pellets | ||||
Impact Modified | No | ||||
NSF Std. 61 | Yes | ||||
Primary Processing Technique | Extrusion | ||||
Processing | Injection Molding | ||||
Other Extrusion | |||||
Special characteristic | Release agent |
POM 的简介
聚甲醛学名聚氧化聚甲醛(简称POM) 又称赛钢、特钢。
它是以甲醛等为原料聚合所得。
POM-H(聚甲醛均聚物),POM-K(聚甲醛共聚物)是高密度、高结晶度的热塑性工程塑料。
具有良好的物理、机械和化学性能,尤其是有优异的耐摩擦性能。
POM具有较好的综合性能,在热塑性塑料中是最坚硬的,是塑料材料中力学性能最接近金属的品种之一,其抗张强度、弯曲强度、耐疲劳强度,耐磨性和电性都十分优良,可在-40度--100度之间长期使用。
POM 电学性能
POM的电绝缘性较好,几乎不受温度和湿度的影响;介电常数和介电损耗在很宽的温度、湿度和频率范围内变化很小;耐电弧性极好,并可在高温下保持。POM的介电强度与厚度有关,厚度0.127mm时为82.7kV/mm,厚度为1.88mm时为23.6kV/mm。
POM具有很低的摩擦系数和很好的几何稳定性,特别适合于制作齿轮和轴承。由于它还具有耐高温特性,因此还用于管道器件(管道阀门、泵壳体),草坪设备等。
POM 环境性能:
POM不耐强酸和氧化剂,对烯酸及弱酸有一定的稳定性。
POM的耐溶剂性良好,可耐烃类、醇类、醛类、醚类、汽油、润滑油及弱碱等,并可在高温下保持相当的化学稳定性。吸水性小,尺寸稳定性好。
POM的耐候性不好,长期在紫外线作用下,力学性能下降,表面发生粉化和龟裂。
应用范围:
POM属结晶性塑料,熔点明显,一旦达到熔点,熔体粘度迅速下降。当温度超过一定限度或熔体受热时间过长,会引起分解。
POM具有较好的综合性能,在热塑性塑料中是最坚硬的,是塑料材料中力学性能最接近金属的品种之一,其抗张强度、弯曲强度、耐疲劳强度,耐磨性和电性都十分优良,可在-40度--100度之间长期使用。
参考图如下:
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