RANGE POLYSTYRENE - PS -
Characteristics of the PS
Good impact resistance.
Excellent electrical insulator.
Ease of adhesion.
Good dimensional stability, without internal
Resists well against dilute acids, alkalines.
PS adheres very easily
PS lends itself well to decoration: printing; metal
coating; hot stamping; co-extrusion.
Highly gas permeable.
PS is a non-polar polymer, therefore it is an excellent insulator over a wide range of frequencies.
Its high volume resistivity makes PS highly
Low dielectric loss values (Tan Delta) prevent it
from being welded using high frequencies (HF).
Good impact resistance at low temperature
The presence of butadiene in HIPS (high impact
polystyrene) limits the spreading of cracks, but it
still remains sensitive to cracking with regards to
Good cold resistance down to - 40°C., continuously to -20°C.
Continuous usage temperature of 70°C
Glass transition temperature (Tg) of 90-100°C.
Fusion zone of @ 145°C.
Decomposition temperature of @ 320°C.
PS is resistant to dilute acids, aqueous saline solutions, and alkalines.
It is etched by oxidising or nitric acids.
It cracks under the action of chemical agents
such as: acetone, isopropanol, benzene, toluene,
chloroform, methylene chloride, trichlorethylene,
carbon tetrachloride, spirits.
PS swells and dissolves in many organic
PS is not very resistant to light (UV).
PS burns and gives off very dense, black smoke, it gives off CO, CO2, and H2O and flows, forming droplets.
It has HB classification under the UL 94 standard.
It exists in V0 and V2 grades.