Edistir® N 1840

About
General purpose polystyrene combining easy flow and medium heat. Edistir N 1840 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 moulding and it is recommended for complex and thin-wall parts and fast moulding cycles. Designation: Thermoplastics ISO 1622-PS,G,085—12 Applications Thermoformed disposable packaging and glossy sheets for industrial and fridge applications. Injection moulded beverage cups, point of sales, containers for foods and cosmetics, toys, housewares, medical articles (Petri dishes).&&

Product Description
GenericPS (GPPS)
Material StatusCommercial: Active
FeaturesExcellent Processability,Good surface appearance,Good liquidity,Quick molding cycle,Food contact compliance,Heat Resistance, Good,HB
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe

Technical Data
PHYSICALNominal valueUnitTest method
Density1.05g/cm³ISO 1183
Apparent density0.65g/cm³ISO 60
Melt Flow Rate
200℃,5.0kg10g/10minISO 1133
Shrinkage rate0.30 to 0.60%Internal Method
Water absorption rate
23℃,24hr< 0.10%ISO 62

IMPACTNominal valueUnitTest method
Impact strength of cantilever beam notchISO 180/1A
-30℃1.5kJ/m²
23℃1.7kJ/m²

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, annealed84.0ASTM D648
Vicat Softening Temp
A5092.0ISO 306/A50
B5088.0ISO 306
Linear coefficient of thermal expansion
MD7.0E-51/℃ASTM D696
Thermal conductivity coefficient0.17W/m/KISO 8302

Electrical performanceNominal valueUnitTest method
Surface resistivity> 1.5E+15ohmsIEC 60093
Volume resistivity> 7.0E+15ohms·cmIEC 60093
Dielectric strength70kV/mmIEC 60243-1
Dielectric constant
50 Hz2.50IEC 60250
Dissipation factor
50 Hz2.0E-4IEC 60250
Compared to the leakage tracing index
Solution A375VIEC 60112

FLAME CHARACTERISTICSNominal valueUnitTest method
1.50 mm,All ColorsHBUL 94
Igniting temperature of the hot wire
1.6 mm650IEC 60695-2-13

Supplementary informationNominal valueUnitTest method
DesignationThermoplastics ISO 1622-PS,G,085-12

MECHANICALNominal valueUnitTest method
Rockwell hardness
M-level80ISO 2039-2
Tensile modulus3250MPaISO 527-1-2
tensile strength
fracture39.0MPaISO 527-2/5
Tensile strain
fracture1.8%ISO 527-2/5
bending strength69.0MPaISO 178

Process Conditions
injectionNominal valueUnitTest method
ExtrusionNominal valueUnitTest method
Processing (melt) temperature200 to 250°C
Mold temperature10.0 to 50.0°C
Melt temperature210 to 240°C

Notes
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