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Physical Properties | Metric | English | Comments | ||
---|---|---|---|---|---|
Density | 1.42 g/cc | 0.0513 lb/in³ | ISO 1183 | ||
Water Absorption | 1.4 % @Thickness 2.00 mm |
1.4 % @Thickness 0.0787 in |
Sim. to ISO 62 | ||
Moisture Absorption | 0.300 % @Thickness 2.00 mm |
0.300 % @Thickness 0.0787 in |
Sim. to ISO 62 | ||
Viscosity | 92857 cP @Shear Rate 5000 1/s, Temperature 230 °C |
92857 cP @Shear Rate 5000 1/s, Temperature 446 °F |
ISO 11403-1 -2 | ||
100600 cP @Shear Rate 5000 1/s, Temperature 215 °C |
100600 cP @Shear Rate 5000 1/s, Temperature 419 °F |
ISO 11403-1 -2 | |||
107100 cP @Shear Rate 5000 1/s, Temperature 200 °C |
107100 cP @Shear Rate 5000 1/s, Temperature 392 °F |
ISO 11403-1 -2 | |||
260530 cP @Shear Rate 500 1/s, Temperature 230 °C |
260530 cP @Shear Rate 500 1/s, Temperature 446 °F |
ISO 11403-1 -2 | |||
298700 cP @Shear Rate 500 1/s, Temperature 215 °C |
298700 cP @Shear Rate 500 1/s, Temperature 419 °F |
ISO 11403-1 -2 | |||
348640 cP @Shear Rate 500 1/s, Temperature 200 °C |
348640 cP @Shear Rate 500 1/s, Temperature 392 °F |
ISO 11403-1 -2 | |||
Linear Mold Shrinkage, Flow | 0.020 cm/cm | 0.020 in/in | ISO 294-4 2577 | ||
Linear Mold Shrinkage, Transverse | 0.019 cm/cm | 0.019 in/in | ISO 294-4 2577 | ||
Melt Flow | 13 g/10 min @Load 2.16 kg, Temperature 190 °C |
13 g/10 min @Load 4.76 lb, Temperature 374 °F |
cm³/10min; ISO 1133 | ||
15 g/10 min @Load 2.16 kg, Temperature 190 °C |
15 g/10 min @Load 4.76 lb, Temperature 374 °F |
ISO 1133 | |||
Mechanical Properties | Metric | English | Comments | ||
Hardness, Rockwell M | 92 | 92 | ISO 2039-2 | ||
Hardness, Rockwell R | 120 | 120 | ISO 2039-2 | ||
Tensile Stress | 5.40 MPa @Strain 0.400 %, Temperature 90.0 °C |
783 psi @Strain 0.400 %, Temperature 194 °F |
ISO 11403-1 -2 | ||
19.4 MPa @Strain 0.600 %, Temperature 23.0 °C |
2810 psi @Strain 0.600 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
19.8 MPa @Strain 1.90 %, Temperature 90.0 °C |
2870 psi @Strain 1.90 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
21.7 MPa @Strain 0.700 %, Temperature 0.000 °C |
3150 psi @Strain 0.700 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
27.7 MPa @Strain 3.30 %, Temperature 90.0 °C |
4020 psi @Strain 3.30 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
32.0 MPa @Strain 4.70 %, Temperature 90.0 °C |
4640 psi @Strain 4.70 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
36.5 MPa @Strain 1.00 %, Temperature -40.0 °C |
5290 psi @Strain 1.00 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
52.2 MPa @Strain 2.60 %, Temperature 23.0 °C |
7570 psi @Strain 2.60 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
63.5 MPa @Strain 4.70 %, Temperature 23.0 °C |
9210 psi @Strain 4.70 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
63.8 MPa @Strain 2.90 %, Temperature 0.000 °C |
9250 psi @Strain 2.90 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
67.3 MPa @Strain 7.00 %, Temperature 23.0 °C |
9760 psi @Strain 7.00 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
77.1 MPa @Strain 5.00 %, Temperature 0.000 °C |
11200 psi @Strain 5.00 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
81.8 MPa @Strain 8.00 %, Temperature 0.000 °C |
11900 psi @Strain 8.00 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
87.5 MPa @Strain 4.20 %, Temperature -40.0 °C |
12700 psi @Strain 4.20 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
94.4 MPa @Strain 7.00 %, Temperature -40.0 °C |
13700 psi @Strain 7.00 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
95.9 MPa @Strain 10.0 %, Temperature -40.0 °C |
13900 psi @Strain 10.0 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
Tensile Strength, Yield | 70.5 MPa | 10200 psi | ISO 527-1/-2 | ||
Elongation at Break | 30 % | 30 % | Nominal; ISO 527-1/-2 | ||
Elongation at Yield | 17 % | 17 % | ISO 527-1/-2 | ||
Tensile Modulus | 3.10 GPa | 450 ksi | ISO 527-1/-2 | ||
Flexural Strength | 80.0 MPa @Strain 3.50 % |
11600 psi @Strain 3.50 % |
ISO 178 | ||
Flexural Modulus | 2.95 GPa | 428 ksi | ISO 178 | ||
Shear Modulus | 0.275 GPa @Temperature 120 °C |
39.9 ksi @Temperature 248 °F |
Dynamic; ISO 11403-1 -2 | ||
0.5547 GPa @Temperature 70.0 °C |
80.45 ksi @Temperature 158 °F |
Dynamic; ISO 11403-1 -2 | |||
0.9459 GPa @Temperature 20.0 °C |
137.2 ksi @Temperature 68.0 °F |
Dynamic; ISO 11403-1 -2 | |||
1.1421 GPa @Temperature -20.0 °C |
165.65 ksi @Temperature -4.00 °F |
Dynamic; ISO 11403-1 -2 | |||
1.3715 GPa @Temperature -50.0 °C |
198.92 ksi @Temperature -58.0 °F |
Dynamic; ISO 11403-1 -2 | |||
Secant Modulus | 0.538 GPa @Strain 12.8 %, Temperature 23.0 °C |
78.1 ksi @Strain 12.8 %, Temperature 73.4 °F |
ISO 11403-1 -2 | ||
0.603 GPa @Strain 13.8 %, Temperature 0.000 °C |
87.4 ksi @Strain 13.8 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
0.760 GPa @Strain 9.00 %, Temperature 23.0 °C |
110 ksi @Strain 9.00 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
0.8025 GPa @Strain 12.0 %, Temperature -40.0 °C |
116.4 ksi @Strain 12.0 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
0.828 GPa @Strain 10.0 %, Temperature 0.000 °C |
120 ksi @Strain 10.0 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
1.19 GPa @Strain 8.00 %, Temperature -40.0 °C |
172 ksi @Strain 8.00 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
1.284 GPa @Strain 5.00 %, Temperature 23.0 °C |
186.2 ksi @Strain 5.00 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
1.32 GPa @Strain 6.00 %, Temperature 0.000 °C |
192 ksi @Strain 6.00 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
2.01 GPa @Strain 2.60 %, Temperature 23.0 °C |
291 ksi @Strain 2.60 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
2.08 GPa @Strain 4.20 %, Temperature -40.0 °C |
302 ksi @Strain 4.20 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
2.20 GPa @Strain 2.90 %, Temperature 0.000 °C |
319 ksi @Strain 2.90 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
3.10 GPa @Strain 0.700 %, Temperature 0.000 °C |
450 ksi @Strain 0.700 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
3.23 GPa @Strain 0.600 %, Temperature 23.0 °C |
469 ksi @Strain 0.600 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
3.65 GPa @Strain 1.00 %, Temperature -40.0 °C |
529 ksi @Strain 1.00 %, Temperature -40.0 °F |
ISO 11403-1 -2 | |||
Izod Impact, Notched (ISO) | 9.00 kJ/m² | 4.28 ft-lb/in² | ISO 180/1A | ||
8.00 kJ/m² @Temperature -30.0 °C |
3.81 ft-lb/in² @Temperature -22.0 °F |
ISO 180/1A | |||
Charpy Impact Unnotched | 32.5 J/cm² | 155 ft-lb/in² | ISO 179/1eU | ||
27.5 J/cm² @Temperature -30.0 °C |
131 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eU | |||
Charpy Impact, Notched | 0.900 J/cm² | 4.28 ft-lb/in² | ISO 179/1eA | ||
0.800 J/cm² @Temperature -30.0 °C |
3.81 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | |||
Tensile Creep Modulus, 1 hour | 2800 MPa @Time 3600 sec |
406000 psi @Time 1.00 hour |
ISO 899-1 | ||
Tensile Creep Modulus, 1000 hours | 1600 MPa @Time 3.60e+6 sec |
232000 psi @Time 1000 hour |
ISO 899-1 | ||
Electrical Properties | Metric | English | Comments | ||
Volume Resistivity | 2.00e+14 ohm-cm | 2.00e+14 ohm-cm | IEC 60093 | ||
Surface Resistance | 4.00e+14 ohm | 4.00e+14 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 | 44.0 kV/mm | 1120 kV/in | IEC 60243-1 | ||
Dissipation Factor | 0.0055 @Frequency 1.00e+6 Hz |
0.0055 @Frequency 1.00e+6 Hz |
IEC 60250 | ||
0.0090 @Frequency 100 Hz |
0.0090 @Frequency 100 Hz |
IEC 60250 | |||
Comparative Tracking Index | 600 V | 600 V | IEC 60112 | ||
Thermal Properties | Metric | English | Comments | ||
CTE, linear, Parallel to Flow | 110 µm/m-°C | 61.1 µin/in-°F | ISO 11359-1/-2 | ||
CTE, linear, Transverse to Flow | 110 µm/m-°C | 61.1 µin/in-°F | ISO 11359-1/-2 | ||
Melting Point | 178 °C | 352 °F | 10°C/min; ISO 11357-1/-3 | ||
Deflection Temperature at 0.46 MPa (66 psi) | 158 °C | 316 °F | ISO 75-1/-2 | ||
Deflection Temperature at 1.8 MPa (264 psi) | 94.0 °C | 201 °F | ISO 75-1/-2 | ||
Vicat Softening Point | 155 °C | 311 °F | 50°C/h 50N; ISO 306 | ||
Flammability, UL94 | HB @Thickness 1.50 mm |
HB @Thickness 0.0591 in |
IEC 60695-11-10 | ||
HB @Thickness 0.800 mm |
HB @Thickness 0.0315 in |
IEC 60695-11-10 | |||
De |
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Additives | Lubricants | ||||
Release agent | |||||
Delivery form | Pellets | ||||
Emissions | <8 mg/kg | VDA 275 | |||
Part Marking Code | >POM< | ISO 11469 | |||
Processing | Injection Moulding | ||||
Regional Availability | Asia Pacific | ||||
Europe | |||||
Global | |||||
Near East/Africa | |||||
North America | |||||
South and Central America | |||||
Resin Identification | POM | ISO 1043 | |||
UL recognition | UL |
概述
pom(聚甲醛)
聚甲醛(英文:polyformaldehyde)热塑性结晶聚合物。被誉为“超钢”或者“赛钢”,又称聚氧亚甲基。英文缩写为POM。通常甲醛聚合所得之聚合物,聚合度不高,且易受热解聚。可用作有机化工、合成树脂的原料,也用作药物熏蒸剂。白色可燃结晶粉末,具有甲醛气味。 缓慢溶于冷水,在热水中溶解较快。
一般性能
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,薄壁部分呈半透明。燃烧特性为容易燃烧,离火后继续燃烧,火焰上端呈黄色,下端呈蓝色,发生熔融滴落,有强烈的刺激性甲醛味、鱼腥臭。聚甲醛为白色粉末,一般不透明,着色性好,
力学性能
POM强度、刚度高,弹性好,减磨耐磨性好。其力学性能优异,比强度可达50.5MPa,比刚度可达2650MPa,与金属十分接近。POM的力学性能随温度变化小,共聚POM比均聚POM的变化稍大一点。POM的冲击强度较高,POM的摩擦因数小,耐磨性好。POM制品对磨时,高载荷作用时易产生类似尖叫的噪声。
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。
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。
成形性
结晶料,熔融范围窄,熔融和凝固快,料温稍低于熔融温度即发生结晶,流动性中等,吸湿小,可不经干燥处理。
优缺点
优点
1、具高机械强度和刚性;2、最高的疲劳强度;3、环境抵抗性、耐有机溶剂性佳;
4、耐反覆冲击性强;5、广泛的使用温度范围(-40℃~120℃);6、良好的电气性质;
7、复原性良好;8、具自已润滑性、耐磨性良好;9、尺寸安定性优。
缺点
受强酸腐蚀,耐侯差,粘合性差,热分解与软化温度接近,限氧指数小。
用途
多聚甲醛为高甲醛含量的固态甲醛,呈固体颗粒状、便于贮存和运输。在较高的温度下能变成甲醛蒸气,易于代替高浓度甲醛参与各种反应,有利于化工、制药等化学合成及其他工业领域的应用,特别是在要求使用无水甲醛作原料的合成方面,用途广泛。主要有以下几方面(1)农药:合成乙草胺、丁草胺和草甘膦等;(2)涂料:合成高档汽车用漆;(3)树脂:合成脲醛树脂、酚醛树脂、聚缩醛树脂、蜜胺树脂、离子交换树脂等及各种粘合剂;(4)造纸:合成纸张增强剂; (5)铸造:翻砂脱膜剂、合成铸造粘合剂;(6)养殖业:薰蒸消毒剂。(7)有机原料:用于制备季戊四醇、三羟甲基丙烷、甘油、丙烯酸、丙烯酸甲酯、甲基丙烯酸、N-羟基甲基丙烯酰胺、烷基苯酚、甲基乙烯基酮等。(8)其他:医药及消毒。
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