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Etoma™ ET4281

Technical Datasheet | Supplied by Polyalloy
Etoma™ ET4281 is an electrically conductive, flame retardant and additive-free polycarbonate (PC) grade by Polyalloy, reinforced with carbon black. Exhibits reduced surface resistivity, excellent electrostatic discharge, easy processability and good mechanical properties. Etoma™ ET4281 is suitable for processing by injection molding. Possible applications include ESD (electrostatic discharge), EMI (electromagnetic interference) shielding, ATEX directive (explosive atmosphere), metal detection, leak detection and powder coating. Complies with RoHS and UL 94 V0 flame rating.
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Product Type
PC (Polycarbonate) > PC
Product Status
COMMERCIAL
Applications/ Recommended for
Injection molding - thermoplastics

Etoma™ ET4281 Properties

Mechanical Properties

Value & Unit
Test Condition
Test Method
Tensile Strength
630 Kg/cm2
ASTM D638
Tensile Elongation
12 %
(at Break) 
ASTM D638
Flexural Modulus
31000 Kg/cm2
ASTM D790

Etoma™ ET4281 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Max. Moisture Content
0.1 %
Drying Temperature
120 °C
Drying Time
4 - 8 hr
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