LEXAN™ VR2820 resin

About
Low flow, UV stabilized polycarbonate resin with mold release. Available in limited transparent tints, limited package types, and must meet minimum order quantity requirements.&&

Product Description
SupplierSABIC
GenericPolycarbonate
Material StatusCommercial: Active
FeaturesWeather resistance is good,Low liquidity
AvailabilitysNorth America
Process MethodsInjection Molding

Technical Data
PHYSICALNominal valueUnitTest method
Density1.20g/cm³ASTM D792
Melt Flow Rate
300℃,1.20kg7.0g/10minASTM D1238
Shrinkage rate
MD:3.2 mm0.50 to 0.70%Internal Method

MECHANICALNominal valueUnitTest method
Tensile modulus2380MPaASTM D638
tensile strength
fracture65.5MPaASTM D638
yield62.1MPaASTM D638
Tensile strain
fracture110%ASTM D638
yield7.0%ASTM D638
Bending modulus
50 mm span2340MPaASTM D790
bending strength
Yield, 50 mm span93.1MPaASTM D790

IMPACTNominal valueUnitTest method
Impact strength of cantilever beam notch
23℃910J/mASTM D256

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed, 3.2 mm124ASTM D648
Linear coefficient of thermal expansion
MD:-40~95℃6.8E-51/℃ASTM E831

Process Conditions
injectionNominal valueUnitTest method
Drying temperature121°C
Drying time3.0 to 4.0hr
Drying time, maximum48hr
Recommended maximum moisture content0.020%
Recommended injection volume40 to 60%
Barrel rear temperature288 to 310°C
Barrel middle temperature299 to 321°C
Barrel front temperature310 to 332°C
Nozzle temperature304 to 327°C
Processing (melt) temperature310 to 332°C
Mold temperature82 to 116°C
Back pressure0.345 to 0.689MPa
Screw speed40 to 70rpm
Vent depth0.025 to 0.076mm

Notes
1. Typical properties: these are not to be construed as specifications.
2. 2.0 in/min
3. Type I, 2.0 in/min
4. 0.051 in/min
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