LEXAN™ ML4539 resin

About
LEXAN™树脂ML4539是一种无定形,不透明的聚碳酸酯。具有高机械,光学,电气和热性能。提供抗冲击性和出色的尺寸稳定性。通过注射成型加工,用于飞机机舱和货舱应用。要求符合FAR 25.853a标准

Product Description
SupplierSABIC
GenericPolycarbonate
Material StatusCommercial: Active
FeaturesHigh impact resistance,Good Dimensional Stability
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific

Technical Data
MECHANICALNominal valueUnitTest method
tensile strength
Fracture, Type I, 50 mm/min56MPaASTM D638
Yield, Type I, 50 mm/min63MPaASTM D638
Tensile strain
Fracture, Type I, 50 mm/min90%ASTM D638
Yield, Type I, 50 mm/min7%ASTM D638
bending strength
Yield, 1.30 mm/min, 50 mm span90.252MPaASTM D790
Bending modulus
Fracture, 1.30 mm/min, 50 mm span2236.68MPaASTM D790

IMPACTNominal valueUnitTest method
Notched impact strength of cantilever beam
23℃3194.8J/mASTM D4812
Impact strength of cantilever beam notch
23℃637J/mASTM D256
Tensile impact
S-shaped535cm-kgf/cm²ASTM D 1822

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed, 3.2 mm132ASTM D648
0.45 MPa, unannealed, 3.2 mm137ASTM D648

PHYSICALNominal valueUnitTest method
Density1.21ASTM D792
Specific volume0.83cm³/gASTM D 792
Water absorption for 24 hours0.15%ASTM D 570
Shrinkage rate
MD:3.2 mm0.5 – 0.7%ASTM D570
Melt Flow Rate
300℃,1.20kg9g/10minInternal Method

FLAME CHARACTERISTICSNominal valueUnitTest method
FAA flame retardant rating, FAR 25.853 A/BFAA flame retardant rating, FAR 25.853 A/B通行证FAR 25.853

Process Conditions
injection moldingNominal valueUnitTest method
Drying temperature120°C
Drying time3 – 4hrs
Drying time (cumulative)48hrs
Maximum water content0.02%
Melt temperature295 – 315°C
Nozzle temperature290 – 310°C
Temperature in the first three zones295 – 315°C
Middle Zone 2 Temperature280 – 305°C
Rear – Zone 1 Temperature270 – 295°C
Mold temperature70 – 95°C
Back pressure0.3 – 0.7MPa
Screw speed40 – 70rpm
Shoot to cylinder size40 – 60%
Depth of exhaust groove0.025-0.076mm

Notes
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