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Formula: PS
Form: Powder
Material: Polystyrene (PS)
CAS Number: 9003-53-6
Commodity: Polymers
Max Particle Size: 900μm
Bulk Density: 0.6g/cm³
Type: Expandable Bead
Color: White
PS Powder (Polystyrene Powder) is widely used in materials science, microencapsulation, 3D printing, and composite formulation due to its thermal stability, low density, and versatility. It plays a key role in polymer blends, coatings, and dispersion formulations to modify mechanical and surface properties for industrial, electronic, and diagnostic applications. In research laboratories, polystyrene microstructures aid in precision engineering, nanotechnology innovations, and controlled-release formulations. Additionally, PS powder enhances polymer processing in thermoplastic composites, making it valuable for advanced manufacturing, electronic components, and biomedical lab consumables.
Technical Data Sheet Safety Data Sheet Tolerance Properties
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Tolerances

Powder
Mean Particle Size Nominal
Minimum Particle Size Nominal
Maximum Particle Size Nominal
Maximum Particle Size Nominal
Particle Size D10 Nominal
Particle Size D50 Nominal
Particle Size D90 Nominal

Material Properties for Polymers

Physical Properties
Element Value
Abbe number 30.8
Flammability HB
Radiation resistance Good
Refractive index 1.59-1.6
Resistance to Ultra-violet Poor
Limiting oxygen index( % ) 19
Water absorption - over 24 hours( % ) 0.4
Density( gcm⁻³ ) 1.05
Chemical Resistance
Element Value
Acids - concentrated Fair-Poor
Acids - dilute Good-Fair
Alcohols Good-Fair
Alkalis Good-Fair
Aromatic hydrocarbons Poor
Greases and Oils Good-Poor
Halogenated Hydrocarbons Poor
Halogens Poor
Ketones Poor
Electrical Properties
Element Value
Dielectric constant @1MHz 2.4-3.1
Dissipation factor @ 1kHz 0.0002
Dielectric strength( kV mm⁻¹ ) 20
Volume resistivity( Ohmcm ) >10¹⁶
Mechanical Properties
Element Value
Hardness - Rockwell M60-90
Poisson's ratio 0.35
Elongation at break( % ) 1.6
Tensile modulus( GPa ) 2.3-4.1
Izod impact strength( J m⁻¹ ) 19-24
Tensile strength( MPa ) 30-100
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 90
Heat-deflection temperature - 1.8MPa( C ) 80
Upper working temperature( C ) 50-95
Specific heat( J K⁻¹ kg⁻¹ ) 1200
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.1-0.13@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 30-210

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