泰科纳POM UV25Z---UV25Z is a nominal 2.5 melt flow rate acetal copolymer which has been specially stabilized to prevent discoloration and deterioration of mechanical properties from ultr***iolet light exposure. The material is ***ailable in precolored black or colors.
Physical performance rating unit system test method
Specific gr***ity: 1.41 g / cm? ASTM D792, ISO 1183
Dissolution volume flow rate (MVR) (190 ° C / 2.16 kg) 2.20 cm3 / 10min ISO 1133
Shrinkage
Flow 2.2% ASTM D955
Transverse flow 1.8% ASTM D955
Vertical flow direction 1.7% ISO 294-4
Flow direction: 2.2% 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 2500 MPa ISO 527-2 / 1A / 1
Tensile strength
Yield, 23 ° C 60.7 MPa ASTM D638
Yield 63.0 MPa ISO 527-2 / 1A / 50
Tensile strain (yield) 11% ISO 527-2 / 1A / 50
Bending modulus (23 ° C) 2420 MPa ISO 178
Impact performance rating unit system test method
Notched impact strength of simply supported beam (23 ° C) 8.0 kJ / M? ISO 179 / 1ea
Notched impact strength of cantilever beam (23 ° C) 7.0 kJ / M? ISO 180 / 1A
Thermal performance rating unit test method
Thermal deformation temperature under load
1.8 MPa, UN annealed at 110 ° C ASTM D648
1.8 MPa, UN annealed at 90.0 ° C ISO 75-2 / A
Melting temperature
-- 1 166 °C ISO 11357-3
-- 165 °C ASTM D3418
Linear coefficient of thermal expansion ISO 11359-2
Flow 1.1e-4 cm / cm / ° C ISO 11359-2
Transverse 1.1e-4 cm / cm / ° C ISO 11359-2
Injection rating unit system
Drying temperature: 80.0 to 100 ° C
Drying time: 3.0 HR
The temperature at the back of the barrel is 170 to 180 ° C
The temperature in the middle of the barrel is 180 to 190 ° C
Temperature at front of barrel 180 to 190 ° C
Nozzle temperature 190 to 200 ° C
Processing (melt) temperature 180 to 200 ° C
Mold temperature: 80.0 to 120 ° C
Injection pressure: 60.0 to 120 MPa
Slow injection speed
Holding pressure 60.0 to 120 MPa
Back pressure: 0.00 to 0.500 MPa