POM LW90-F2泰科纳---LW90-F2 is an acetal copolymer formulated with a nominal 9 melt flow rate base polymer and a standard level of polytetrafluoroethylene filler (PTFE). It is designed for use in wear applicati*** against plastic, metal, glass, or ceramic mating surfaces where silicone lubricants can not be tolerated.
Physical performance rating unit system test method
proportion
-- 1.40 g/cm³ ASTM D792
-- 1.41 g/cm³ ISO 1183
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: 2.3% ISO 294-4
Mechanical properties rating unit system test method
Tensile modulus 2650 MPa ISO 527-2 / 1A / 1
Tensile strength
Yield, 23 ° C 57.2 MPa ASTM D638
Yield 63.0 MPa ISO 527-2 / 1A / 50
Tensile strain (yield) 9.0% ISO 527-2 / 1A / 50
Bending modulus (23 ° C) 2600 MPa ISO 178
Impact performance rating unit system test method
Notched impact strength of simply supported beam (23 ° C) 5.0 kJ / M? ISO 179 / 1ea
Notchless impact strength of simply supported beams ISO 179 / 1eu
-30°C 120 kJ/m² ISO 179/1eU
23°C 120 kJ/m² ISO 179/1eU
Notched impact strength of cantilever beam (23 ° C) 5.1 kJ / M? ISO 180 / 1A
Thermal performance rating unit test method
Hot deformation temperature (1.8 MPa, UN annealed) 98.0 ° C ISO 75-2 / A
Melting temperature 1 166 ° C ISO 11357-3
Linear coefficient of thermal expansion ISO 11359-2
Flow 1.0e-4 cm / cm / ° C ISO 11359-2
Transverse 9.0e-5 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
The injection speed was slow to medium
Holding pressure 60.0 to 120 MPa
Back pressure: 0.00 to 0.500 MPa