泰科纳POM ***0---Celcon acetal copolymer grade ***0™ is a medium viscosity polymer providing optimum performance in general purpose injection molding and extrusion of thin walled tubing and thin gauge film. This grade provides overall excellent performance in many applications.
Chemical abbreviation according to ISO 1043-1: POM
Please also see Hostaform® C 9021.
Physical performance rating unit system test method
Specific gravity: 1.41 g / cm? ASTM D792, ISO 1183
Melt flow rate (melt flow rate) 9.0 g / 10 min ASTM d1238
MVR (190 ° C / 2.16 kg) 8.00 cm3 / 10min ISO 1133
Shrinkage
Flow 2.2% ASTM D955
Transverse flow 1.8% ASTM D955
Vertical flow direction 1.9% ISO 294-4
Flow direction: 2.0% 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 of ISO 276 527 MPa
Tensile strength
Yield, - 40 ° C - 94.5 MPa - ASTM D638
Yield, 23 ° C 60.7 MPa ASTM D638
Yield, 71 ° C 34.5 MPa ASTM D638
Yield 66.0 MPa ISO 527-2 / 1A / 50
Tensile strain (yield) 10% ISO 527-2 / 1A / 50
Tensile creep modulus ISO 899-1
1 hr 2450 MPa ISO 899-1
1000 hr 1350 MPa ISO 899-1
Bending modulus (23 ° C) 2550 MPa ISO 178
Impact performance rating unit system test method
Notched impact strength of simply supported beams ISO 179 / 1ea
-30°C 6.0 kJ/m² ISO 179/1eA
23°C 6.0 kJ/m² ISO 179/1eA
Notchless impact strength of simply supported beams ISO 179 / 1eu
-30°C 180 kJ/m² ISO 179/1eU
23°C 190 kJ/m² ISO 179/1eU
Notched impact strength of cantilever beam (23 ° C) 5.7 kJ / M? ISO 180 / 1A
韩国工程塑料POM均聚甲醛1959年发明，由甲醛溶液与***反应，经过脱水、热裂解得到精制甲醛，然后在催化剂作用下进行液相聚合，聚合后用醋酐酯化封端。均聚甲醛的结晶度高，分子量分布较窄。其产品相对密度约为1.4，熔点为170-185℃，特点是有优异的刚性，拉伸强度可达68.9MPa，具有优异的刚性，拉伸强度高，单位质量的拉伸强度高于锌和黄铜，接近钢材，而且耐磨性能好、耐疲劳强度和蠕变性均好，摩擦系数小，但是热稳定性差、不耐酸碱。目前均聚甲醛约占聚甲醛总产量的20%。