泰科纳POM M270---acetal copolymer grade M270™ is a lower molecular weight, high - flow grade designed for superior moldability in multi-c***ity, intricate or hard to fill molds applications.
Chemical abbreviation according to ISO 1043-1: POM
Please also see Hostaform® C 27021.
Physical performance rating unit system test method
Specific gr***ity: 1.41 g / cm? ASTM D792, ISO 1183
MVR (190 ° C / 2.16 kg) 23.0 cm3 / 10min ISO 1133
Shrinkage
Flow 2.2% ASTM D955
Transverse flow 1.8% ASTM D955
Vertical flow direction 1.6% ISO 294-4
Flow direction 1.7% ISO 294-4
Water absorption ISO 62
Saturated, 23 ° C 0.75% ISO 62
Balanced, 23 ° C, 50% RH 0.20% ISO 62
Mechanical properties rating unit system test method
Tensile modulus 2800 MPa ISO 527-2 / 1A / 1
Tensile strength
Yield, 23 ° C 60.7 MPa ASTM D638
Yield: 67.0 MPa ISO 527-2 / 1A / 50
Tensile strain (yield) 8.0% ISO 527-2 / 1A / 50
Tensile creep modulus ISO 899-1
1 hr 2300 MPa ISO 899-1
1000 hr 1300 MPa ISO 899-1
Bending modulus (23 ° C) 2750 MPa ISO 178
Impact performance rating unit system test method
Notched impact strength of simply supported beam (23 ° C) 5.2 kJ / M? ISO 179 / 1ea
Notchless impact strength of simply supported beams ISO 179 / 1eu
-30°C 110 kJ/m² ISO 179/1eU
23°C 120 kJ/m² ISO 179/1eU
Notched impact strength of cantilever beam (23 ° C) 5.4 kJ / M? ISO 180 / 1A
韩国工程塑料POM虽然是综合性能较好的工程塑料，但为了进一步改善其耐热性、刚性、尺寸稳定性、耐疲 劳性、耐蠕变性和力学性能，往往对聚甲醛进行复合增强，以满足各种特殊用途的使用。聚甲醛复合增强中所使用的填料，主要有长短玻璃纤维、碳纤维、玻璃微珠、滑石粉或钛酸钾晶须等。Hoechst 公司的长纤维增强POM的落标冲击强度为普通纤维增强聚甲醛的8倍，它推出的两种25%玻璃纤维增强聚甲醛，强度***高，其拉伸强度高达128MPa，并具有优良的热性能，低摩擦性、耐磨性、抗蠕变性和耐低温性，常可用于制造性能要求严格的零部件，如燃油系统零件、车窗升降摇柄、安全控制部件及泵叶轮、泵壳等。