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Home >> Products Specification >> Polystyrol 143 E
Polystyrol 143 E
 
Product description
Polystyrol 143 E is a medium strength, easy flowing general purpose grade, suitable for blending with impact modified Polystyrol, Styrolux and for coextruded gloss layers.-----
 
Processing
Polystyrol 143 E can be injection molded at temperatures between 180 and 280°C. Recommended mold temperatures are between 10 and 60°C. Extrusion melt temperature should not exceed 240°C.
 
Applications
In blends with high impact polystyrene or Styrolux: thermoformed articles like cups for cold beverages and lids. As easy flowing coextruded gloss layer on food packaging containers and vending cups.
Injection molded articles like razors, tooth brushes, packing articles.
 
Physical form and Storage
Polystyrol 143 E should be kept in its original containers in cool, dry place. Avoid direct exposure to sunlight. Polystyrol 143 E can be stored in silos.
 
Food legislation
If used unmodified and under appropriate processing conditions parts from Polystyrol 143 E comply with the usual requirements for food packaging. Detailed written confirmations (e.g. BGVO, FDA) are given on request. Please contact our regional sales office
 
Product safety
During processing of Polystyrol 143 E small quantities of styrene monomer may be released into the atmosphere. At styrene vapour concentrations below 20 ppm no negative effects on health are expected. In our experience, the concentration of styrene does not exceed 1 ppm in well ventilated workplaces - that is where five to eight air changes per hour are made. Further information can be found in our Polystyrol safety data sheets. These can be downloaded from the Plastics Portal, www.plasticsportal.net.
 
Note
The statements in this document are based on our present technical knowledge and experience. They do not relieve processors of the responsibility of carrying out their own tests, and purchasers of our products are expected to carry out receiving inspections. Neither do they imply any binding assurence of suitability for a particular purpose. Any proprietary rights should be respected and existing legislation observed.
 
Typical values at 23°C1)
  Test Method Unit Value
Mechanical Properties      
Tensile modulus ISO 527-1/-2 MPa 3300
Stress at break ISO 527-1/-2 MPa 46
Strain at break ISO 527-1/-2 % 2
Flexural strength ISO 178 MPa 72
Shear modulus ISO 6721-2 MPa 1350
Charpy impact strength (23°C) ISO 179/1eU kJ/m² <25
Charpy notched impact strength (23°C) ISO 179/1eA kJ/m² 3
Ball indentation hardness at 358 N/30 s ISO 2039-1 MPa 150
       
Thermal properties      
Vicat softening temperature VST/B/50 ISO 306 °C 84
Vicat softening temperature VST/A/120 ISO 306 °C 90
HDT A (1.80 MPa) ISO 75-1/-2 °C 72
HDT B (0.45 MPa) ISO 75-1/-2 °C 82
       
Processing      
Melt volume-flow rate MVR 200 °C/5 kg ISO 1133 cm³/10min 10
Processing: Injection moulding (M), Extrusion (E), Blow moulding (B)     M.E
Melt temperature, injection moulding   °C 180 - 280
Mold temperature, injection molding   °C 10 - 60
Melt temperature, flat film   °C 200 - 240
       
Electrical properties      
Relative permittivity (100Hz) IEC 60250   2.5
Relative permittivity (1 MHz) IEC 60250   2.5
Volume resistivity IEC 60093 Ohm*m >1E16
Surface resistivity IEC 60093 Ohm >1E14
Electric strength K20/P50 IEC 60243-1 kV/mm 135
       
Flammabillity      
UL 94 (d = 1,6 mm) UL-94 class HB
UL 94 (d = 3.18 mm) UL-94 class HB
       
Other properties      
Density ISO 1183 kg/m³ 1043
Water absorption, equilibrium in water at 23°C similar to ISO 62 % <0.1
Moisture absorption, equilibrium 23°C/50% r.h. similar to ISO 62 % <0.1