旭化成POM 3013A---3013a is a POM homopolymer,. It is ***ailable in North America, Africa and the Middle East, Europe or Asia Pacific. Tenac ™ The application areas of 3013a include engineering / industrial accessories, automotive industry and housing.
Features include:
High stiffness
high strength
high viscosity
Homopolymer
Creep resistance
Physical performance rating unit system test method
Specific gr***ity: 1.42 g / cm? ASTM D792, ISO 1183
Melt flow rate (melt flow rate) (190 ° C / 2.16 kg) 2.8 g / 10 min ISO 1133
Shrinkage - flow 1.8 to 2.2% internal method
Water absorption (23 ° C, 24 hr, 50% RH) 0.20% ASTM D570
Hardness rating unit system test method
Rockwell hardness ASTM d785
Grade m 94 ASTM d785
Grade r 120 ASTM d785
Mechanical properties rating unit system test method
Tensile modulus 2900 MPa ISO 527-2
Tensile stress
Yield 69.0 MPa ISO 527-2
-- 72.0 MPa ASTM D638
elongation
Fracture 50% ASTM D638
Fracture 45% ISO 527-2
Bending modulus
-- 2700 MPa ASTM D790
-- 2600 MPa ISO 178
Bending strength: 93.0 MPa ASTM D790
Taber abrasion resistance: 13.0 mg ASTM d1044
Impact performance rating unit system test method
Notched impact strength of simply supported beam: 13 kJ / M? ISO 179
Notched impact strength of cantilever beam is 120 J / M ASTM D256
正是由于结构上的不同，导致均聚和共聚甲醛在各项性能下存在差异。两者主要区别是：均聚甲醛密度、结晶度较高，熔点与HDT较共聚甲醛高10℃，强度、耐蠕变性能和耐摩擦性能更优越，但热稳定性差，加工温度范围窄约10℃，对酸硷的稳定性较低。共聚甲醛密度、结晶度、熔点、强度都较低，但热稳定性相对较好，不容易分解，加工温度范围宽30~50℃，对酸硷稳定性较好