Physical Properties | Metric | English | Comments | ||
---|---|---|---|---|---|
Density | 1.58 g/cc | 0.0571 lb/in³ | ISO 1183 | ||
Water Absorption | 0.90 % | 0.90 % | ISO 62 | ||
Moisture Absorption at Equilibrium | 0.15 % | 0.15 % | 23°C/50% R.H.; ISO 62 | ||
Melt Flow | 5.5 g/10 min @Load 2.16 kg, Temperature 190 °C |
5.5 g/10 min @Load 4.76 lb, Temperature 374 °F |
ISO 1133 | ||
Mechanical Properties | Metric | English | Comments | ||
Ball Indentation Hardness | 190 MPa | 27600 psi | ISO2039 | ||
Tensile Strength at Break | 130 MPa | 18900 psi | 5mm/min; ISO 527 | ||
Tensile Stress | 10.0 MPa @Strain 0.200 %, Time 3.60e+7 sec |
1450 psi @Strain 0.200 %, Time 10000 hour |
ISO 899-1 | ||
12.0 MPa @Strain 0.200 %, Time 3.60e+6 sec |
1740 psi @Strain 0.200 %, Time 1000 hour |
ISO 899-1 | |||
15.0 MPa @Strain 0.200 %, Time 3600 sec |
2180 psi @Strain 0.200 %, Time 1.00 hour |
ISO 899-1 | |||
31.0 MPa @Strain 0.600 %, Time 3.60e+6 sec |
4500 psi @Strain 0.600 %, Time 1000 hour |
ISO 899-1 | |||
32.0 MPa @Strain 0.600 %, Time 3.60e+7 sec |
4640 psi @Strain 0.600 %, Time 10000 hour |
ISO 899-1 | |||
35.0 MPa @Strain 0.500 %, Time 3600 sec |
5080 psi @Strain 0.500 %, Time 1.00 hour |
ISO 899-1 | |||
55.0 MPa @Strain 1.80 %, Time 3.60e+7 sec |
7980 psi @Strain 1.80 %, Time 10000 hour |
ISO 899-1 | |||
55.0 MPa @Strain 1.40 %, Time 3.60e+6 sec |
7980 psi @Strain 1.40 %, Time 1000 hour |
ISO 899-1 | |||
58.0 MPa @Strain 0.800 %, Time 3600 sec |
8410 psi @Strain 0.800 %, Time 1.00 hour |
ISO 899-1 | |||
Tensile Strength, Yield | 60.0 MPa @Temperature 120 °C |
8700 psi @Temperature 248 °F |
ISO 527 | ||
90.0 MPa @Temperature 80.0 °C |
13100 psi @Temperature 176 °F |
ISO 527 | |||
125 MPa @Temperature 40.0 °C |
18100 psi @Temperature 104 °F |
ISO 527 | |||
Elongation at Break | 3.0 % | 3.0 % | 5mm/min; ISO 527 | ||
Modulus of Elasticity | 8.80 GPa | 1280 ksi | ISO 527 | ||
2.50 GPa @Temperature 140 °C |
363 ksi @Temperature 284 °F |
SIO 527 | |||
5.00 GPa @Temperature 100 °C |
725 ksi @Temperature 212 °F |
SIO 527 | |||
8.10 GPa @Temperature 40.0 °C |
1170 ksi @Temperature 104 °F |
SIO 527 | |||
Izod Impact, Notched (ISO) | 9.00 kJ/m² | 4.28 ft-lb/in² | ISO 180 | ||
9.00 kJ/m² @Temperature -30.0 °C |
4.28 ft-lb/in² @Temperature -22.0 °F |
ISO 180 | |||
Charpy Impact Unnotched | 5.50 J/cm² | 26.2 ft-lb/in² | ISO 179 | ||
6.00 J/cm² @Temperature -30.0 °C |
28.6 ft-lb/in² @Temperature -22.0 °F |
ISO 179 | |||
Charpy Impact, Notched | 0.900 J/cm² | 4.28 ft-lb/in² | ISO 179 | ||
0.880 J/cm² @Temperature -30.0 °C |
4.19 ft-lb/in² @Temperature -22.0 °F |
ISO 179 | |||
Tensile Creep Modulus, 1000 hours | 5800 MPa | 841000 psi | ISO 899 | ||
Electrical Properties | Metric | English | Comments | ||
Volume Resistivity | 1.00e+12 ohm-cm | 1.00e+12 ohm-cm | IEC 60093 | ||
Surface Resistance | 1.00e+14 ohm | 1.00e+14 ohm | IEC 60093 | ||
Dielectric Constant | 4.0 @Frequency 100 Hz |
4.0 @Frequency 100 Hz |
IEC 60250 | ||
4.0 @Frequency 1.00e+6 Hz |
4.0 @Frequency 1.00e+6 Hz |
IEC 60250 | |||
Dielectric Strength | 43.0 kV/mm | 1090 kV/in | IEC 60243-1 | ||
Dissipation Factor | 0.0040 @Frequency 100 Hz |
0.0040 @Frequency 100 Hz |
IEC 60250 | ||
0.0070 @Frequency 1.00e+6 Hz |
0.0070 @Frequency 1.00e+6 Hz |
IEC 60250 | |||
Comparative Tracking Index | 600 V | 600 V | Test Solution A; IEC 60112 | ||
600 V | 600 V | Test Solution B; IEC 60112 | |||
Thermal Properties | Metric | English | Comments | ||
CTE, linear, Parallel to Flow | 4.00 µm/m-°C @Temperature 23.0 - 55.0 °C |
2.22 µin/in-°F @Temperature 73.4 - 131 °F |
DIN 53752 | ||
Melting Point | 168 °C | 334 °F | DIN 53765 | ||
Maximum Service Temperature, Air | 110 °C | 230 °F | |||
Deflection Temperature at 1.8 MPa (264 psi) | 163 °C | 325 °F | ISO 75 | ||
Vicat Softening Point | 160 °C | 320 °F | (50 °C/h / 50N) - B/50; ISO 306 | ||
Processing Properties | Metric | English | Comments | ||
Melt Temperature | 190 - 230 °C | 374 - 446 °F | |||
Mold Temperature | 60.0 - 120 °C | 140 - 248 °F | |||
De |
|||||
Color | Natural | ||||
Commercial Status | Active America | ||||
Impact Modified | No | ||||
Primary Processing Technique | Injection Molding |
POM 的简介
聚甲醛是一种表面光滑,有光泽的硬而致密的材料,淡黄或白色,可在-40- 100°C温度范围内长期使用。它的耐磨性和自润滑性也比绝大多数工程塑料优越,又有良好的耐油,耐过氧化物性能。很不耐酸,不耐强碱和不耐紫外线的辐射。
POM 物理性质
聚甲醛的拉伸强度达70MPa,吸水性小,尺寸稳定,有光泽,这些性能都比尼龙好,聚甲醛为高度结晶的树脂,在热塑性树脂中是最坚韧的。具抗热强度,弯曲强度,耐疲劳性强度均高,耐磨性和电性能优良。
POM 聚甲醛的性能:
性 能 数 值
比重 1.43
熔点 175°C
伸强度(屈服) 70MPa
伸长率(屈服) 15%
(断裂) 15%
冲击强度(无缺口) 108KJ/m2
(带缺口) 7.6KJ/m2
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。
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