Physical Properties | Metric | English | Comments | ||
---|---|---|---|---|---|
Density | 1.37 g/cc | 0.0495 lb/in³ | ISO 1183 | ||
Water Absorption | 0.90 % @Thickness 2.00 mm |
0.90 % @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 | 165000 cP @Shear Rate 5000 1/s, Temperature 220 °C |
165000 cP @Shear Rate 5000 1/s, Temperature 428 °F |
ISO 11403-1 -2 | ||
187000 cP @Shear Rate 5000 1/s, Temperature 205 °C |
187000 cP @Shear Rate 5000 1/s, Temperature 401 °F |
ISO 11403-1 -2 | |||
214000 cP @Shear Rate 5000 1/s, Temperature 190 °C |
214000 cP @Shear Rate 5000 1/s, Temperature 374 °F |
ISO 11403-1 -2 | |||
781000 cP @Shear Rate 500 1/s, Temperature 220 °C |
781000 cP @Shear Rate 500 1/s, Temperature 428 °F |
ISO 11403-1 -2 | |||
917000 cP @Shear Rate 500 1/s, Temperature 205 °C |
917000 cP @Shear Rate 500 1/s, Temperature 401 °F |
ISO 11403-1 -2 | |||
1.082e+6 cP @Shear Rate 500 1/s, Temperature 190 °C |
1.082e+6 cP @Shear Rate 500 1/s, Temperature 374 °F |
ISO 11403-1 -2 | |||
Linear Mold Shrinkage, Flow | 0.015 cm/cm | 0.015 in/in | ISO 294-4 2577 | ||
Linear Mold Shrinkage, Transverse | 0.016 cm/cm | 0.016 in/in | ISO 294-4 2577 | ||
Melt Flow | 2.0 g/10 min @Load 2.16 kg, Temperature 190 °C |
2.0 g/10 min @Load 4.76 lb, Temperature 374 °F |
cm³/10min; ISO 1133 | ||
2.1 g/10 min @Load 2.16 kg, Temperature 190 °C |
2.1 g/10 min @Load 4.76 lb, Temperature 374 °F |
ISO 1133 | |||
Mechanical Properties | Metric | English | Comments | ||
Hardness, Rockwell M | 59 | 59 | ISO 2039-2 | ||
Hardness, Rockwell R | 113 | 113 | ISO 2039-2 | ||
Tensile Stress | 8.50 MPa @Strain 1.60 %, Temperature 90.0 °C |
1230 psi @Strain 1.60 %, Temperature 194 °F |
ISO 11403-1 -2 | ||
19.3 MPa @Strain 6.50 %, Temperature 90.0 °C |
2800 psi @Strain 6.50 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
22.0 MPa @Strain 1.90 %, Temperature 40.0 °C |
3190 psi @Strain 1.90 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
22.9 MPa @Strain 11.4 %, Temperature 90.0 °C |
3320 psi @Strain 11.4 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
23.7 MPa @Strain 16.3 %, Temperature 90.0 °C |
3440 psi @Strain 16.3 %, Temperature 194 °F |
ISO 11403-1 -2 | |||
29.0 MPa @Strain 2.50 %, Temperature 23.0 °C |
4210 psi @Strain 2.50 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
36.0 MPa @Strain 2.60 %, Temperature 0.000 °C |
5220 psi @Strain 2.60 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
40.0 MPa @Strain 7.60 %, Temperature 40.0 °C |
5800 psi @Strain 7.60 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
40.0 MPa @Strain 2.30 %, Temperature -20.0 °C |
5800 psi @Strain 2.30 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
44.0 MPa @Strain 13.3 %, Temperature 40.0 °C |
6380 psi @Strain 13.3 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
44.7 MPa @Strain 21.0 %, Temperature 40.0 °C |
6480 psi @Strain 21.0 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
48.7 MPa @Strain 10.2 %, Temperature 23.0 °C |
7060 psi @Strain 10.2 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
50.9 MPa @Strain 17.8 %, Temperature 23.0 °C |
7380 psi @Strain 17.8 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
51.2 MPa @Strain 25.4 %, Temperature 23.0 °C |
7430 psi @Strain 25.4 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
56.1 MPa @Strain 10.6 %, Temperature 0.000 °C |
8140 psi @Strain 10.6 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
58.3 MPa @Strain 18.5 %, Temperature 0.000 °C |
8460 psi @Strain 18.5 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
58.6 MPa @Strain 26.4 %, Temperature 0.000 °C |
8500 psi @Strain 26.4 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
63.9 MPa @Strain 9.20 %, Temperature -20.0 °C |
9270 psi @Strain 9.20 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
67.0 MPa @Strain 16.2 %, Temperature -20.0 °C |
9720 psi @Strain 16.2 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
67.8 MPa @Strain 23.1 %, Temperature -20.0 °C |
9830 psi @Strain 23.1 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
Tensile Strength, Yield | 55.0 MPa | 7980 psi | ISO 527-1/-2 | ||
Elongation at Break | >= 50 % | >= 50 % | Nominal; ISO 527-1/-2 | ||
Elongation at Yield | 25 % | 25 % | ISO 527-1/-2 | ||
Tensile Modulus | 1.90 GPa | 276 ksi | ISO 527-1/-2 | ||
Flexural Modulus | 1.70 GPa | 247 ksi | ISO 178 | ||
Shear Modulus | 0.115 GPa @Temperature 120 °C |
16.7 ksi @Temperature 248 °F |
Dynamic; ISO 11403-1 -2 | ||
0.262 GPa @Temperature 70.0 °C |
38.0 ksi @Temperature 158 °F |
Dynamic; ISO 11403-1 -2 | |||
0.514 GPa @Temperature 20.0 °C |
74.6 ksi @Temperature 68.0 °F |
Dynamic; ISO 11403-1 -2 | |||
0.729 GPa @Temperature -20.0 °C |
106 ksi @Temperature -4.00 °F |
Dynamic; ISO 11403-1 -2 | |||
1.166 GPa @Temperature -50.0 °C |
169.1 ksi @Temperature -58.0 °F |
Dynamic; ISO 11403-1 -2 | |||
Secant Modulus | 0.251724 GPa @Strain 20.3 %, Temperature 23.0 °C |
36.5100 ksi @Strain 20.3 %, Temperature 73.4 °F |
ISO 11403-1 -2 | ||
0.277251 GPa @Strain 21.1 %, Temperature 0.000 °C |
40.2125 ksi @Strain 21.1 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
0.292763 GPa @Strain 15.2 %, Temperature 40.0 °C |
42.4623 ksi @Strain 15.2 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
0.364865 GPa @Strain 18.5 %, Temperature -20.0 °C |
52.9200 ksi @Strain 18.5 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
0.477451 GPa @Strain 10.2 %, Temperature 23.0 °C |
69.2495 ksi @Strain 10.2 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
0.526316 GPa @Strain 7.60 %, Temperature 40.0 °C |
76.3369 ksi @Strain 7.60 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
0.529245 GPa @Strain 10.6 %, Temperature 0.000 °C |
76.7617 ksi @Strain 10.6 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
0.694565 GPa @Strain 9.20 %, Temperature -20.0 °C |
100.740 ksi @Strain 9.20 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
1.15789 GPa @Strain 1.90 %, Temperature 40.0 °C |
167.940 ksi @Strain 1.90 %, Temperature 104 °F |
ISO 11403-1 -2 | |||
1.16 GPa @Strain 2.50 %, Temperature 23.0 °C |
168 ksi @Strain 2.50 %, Temperature 73.4 °F |
ISO 11403-1 -2 | |||
1.38462 GPa @Strain 2.60 %, Temperature 0.000 °C |
200.825 ksi @Strain 2.60 %, Temperature 32.0 °F |
ISO 11403-1 -2 | |||
1.73913 GPa @Strain 2.30 %, Temperature -20.0 °C |
252.243 ksi @Strain 2.30 %, Temperature -4.00 °F |
ISO 11403-1 -2 | |||
Charpy Impact Unnotched | NB | NB | ISO 179/1eU | ||
NB @Temperature -30.0 °C |
NB @Temperature -22.0 °F |
ISO 179/1eU | |||
Charpy Impact, Notched | 2.50 J/cm² | 11.9 ft-lb/in² | ISO 179/1eA | ||
1.30 J/cm² @Temperature -30.0 °C |
6.19 ft-lb/in² @Temperature -22.0 °F |
ISO 179/1eA | |||
Electrical Properties | Metric | English | Comments | ||
Comparative Tracking Index | 600 V | 600 V | IEC 60112 | ||
Thermal Properties | Metric | English | Comments | ||
CTE, linear, Parallel to Flow | 120 µm/m-°C | 66.7 µin/in-°F | ISO 11359-1/-2 | ||
CTE, linear, Transverse to Flow | 120 µm/m-°C | 66.7 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) | 130 °C | 266 °F | ISO 75-1/-2 | ||
Deflection Temperature at 1.8 MPa (264 psi) | 72.0 °C | 162 °F | ISO 75-1/-2 | ||
Flammability, UL94 | HB @Thickness 1.50 mm |
HB @Thickness 0.0591 in |
IEC 60695-11-10 | ||
De |
|||||
Additives | Lubricants | ||||
Release agent | |||||
Delivery form | Pellets | ||||
Part Marking Code | >POM-I< | ISO 11469 | |||
Processing | Blow Moulding | ||||
Coatable | |||||
Injection Moulding | |||||
Other Extrusion | |||||
Profile Extrusion | |||||
Sheet Extrusion | |||||
Regional Availability | Asia Pacific | ||||
Europe | |||||
Global | |||||
Near East/Africa | |||||
North America | |||||
South and Central America | |||||
Resin Identification | POM-I | ISO 1043 | |||
UL recognition | UL |
POM 的简介
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,但常规冲击不及ABS和PC;POM对缺口敏感,有缺口可使冲击强度下降90%之多。
POM的疲劳强度十分突出,10交变载荷作用后,疲劳强度可达35MPa,而PA和PC仅为28MPa。
POM的蠕变性与PA相似,在20℃、21MPa、3000h时仅为2.3%,而且受温度的影响很小。
POM的摩擦因数小,耐磨性好(POM>PA66>PA6>ABS>HPVC>PS>PC),极限PV值很大,自润滑性好。
POM制品对磨时,高载荷作用时易产生类似尖叫的噪声。
POM 化学性质
POM 按分子链结构不同,聚甲醛可分为均聚甲醛和共聚甲醛,前者密度、结晶度、熔点都高,但是热稳定性差,加工温度窄(10度),对酸堿的稳定性略低;后者密度、结晶度、熔点较低,但热稳定性好,不易分解,加工温度宽(50度) 。
POM 不足之处在于:由受强酸腐蚀,耐侯差,粘合性差,热分解与软化温度接近,限氧指数小。它们广泛用于汽车工业,电子电器,机械设备等。还可以做水龙头、框窗、洗漱盆。
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。
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PA6T,46,9T、PC、PC/ABS、PBT、ABS、PPA、PPS、POM、PMMA、TPE、PPO、LCP液晶聚合物。
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参考图如下: