Edistir® N 3840

1 of 19 products in this brand
Edistir® N 3840 is a general purpose polystyrene combining easy flow and medium heat. N 3840 belongs to Edistir® GPPS third generation.Edistir® N 3840 is suggested in extrusion for glossy capping of HIPS sheets and for blending with HIPS or clear SBS for stiffer thermoformable sheets.This grade exhibits excellent processability in injection molding and it is recommended for complex and thin-wall parts and fast molding cycles.Thanks to N 3840, injected items will be more brilliant and neutral colored in line with more sophisticated market needs.Designation: Thermoplastics ISO 1622-PS,G,085-12.Thermoformed disposable packaging and glossy sheets for industrial and fridge applications.Injection of molded beverage cups, containers for foods and cosmetics, toys, housewares, medical articles (Petri dishes).

Polymer Name: General Purpose Polystyrene (GPPS)

Processing Methods: Extrusion, Injection Molding, Thermoforming

Technical Data Sheet
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Identification & Functionality

Chemical Family
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Features & Benefits

Applications & Uses

Plastics & Elastomers Processing Methods

Properties

Flame Rating
Physical Form
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Strain at Break (50mm/min)1.8%ISO 527
Tensile Stress at Break (50mm/min)39MPaISO 527
Flexural Strength (2mm/min)69MPaISO 178
Rockwell Hardness (L/M)M80ISO 2039/2
Tensile Modulus (1mm/min)3250MPaISO 527
Izod Impact Strength (Notched, 23°C, 4mm)1.7kJ/m²ISO 180/1A
Izod Impact Strength (Notched, -30°C, 4mm)1.5kJ/m²ISO 180/1A
Typical Properties
ValueUnitsTest Method / Conditions
Water Absorption (24h, 23°C)max. 0.1%ISO 62
Density1.05g/cm³ISO 1183
Bulk Density0.65g/cm³ISO 60
Thermal Properties
ValueUnitsTest Method / Conditions
Coefficient of Linear Thermal Expansion7×10⁻⁵/°CASTM D 696
Thermal Conductivity0.17W/(K·m)ISO 8302
Moulding Shrinkage0.3 - 0.6%ISO 294/4
Deflection Temperature Under Load (Annealed, 1.82MPa, 120°C/h)84°CISO 75 A
Vicat Softening Temperature (50N, 50°C/h)88°CISO 306/B
Vicat Softening Temperature (10N, 50°C/h)92°CISO 306/A
Electrical Properties
ValueUnitsTest Method / Conditions
Dielectric Constant (Relative Permittivity, 50Hz)2.5IEC 60250
Dissipation Factor (50Hz)0IEC 60250
Comparative Tracking Index (CTI, Sol. A)375IEC 60112
Surface Resistivitymin. 1.5×10¹⁵ohmIEC 60093
Volume Resistivitymin. 7×10¹⁵ohm·cmIEC 60093
Dielectric Strength70kV/mmIEC 60243
Flammability
ValueUnitsTest Method / Conditions
Flame Behaviour (1.5mm)HBcl.UL 94
Glow Wire Test (GWT, 1.6mm)650°CIEC 60695-2-10
Rheological Properties
ValueUnitsTest Method / Conditions
Melt Flow Rate (200°C, 5kg)10g/10'ISO 1133

Packaging & Availability

Regional Availability
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  • Europe
  • Latin America
  • North America