Comparison
rPS General Purpose vs PETG
A side-by-side comparison of Recycled General Purpose Polystyrene and Polyethylene Terephthalate Glycol.
Physical
Density
1.04-1.06 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.03-0.05 %
0.13 %
Transparency
Good to Excellent
Transparent
Shrinkage
0.5-0.8 %
0.2 – 0.5 %
Mechanical
Young's Modulus
2.8-3.5 GPa
2.1 GPa
Tensile Strength
40-55 MPa
50 MPa
Elongation at Break
1-4 %
120 %
Impact Strength (Izod)
10-20 J/m
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
90-100 °C
80 °C
Melting Point
N/A (amorphous)
—
Continuous Service Temperature
60-70 °C
65 °C
Heat Deflection Temperature
80-90 °C (0.45 MPa)
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
2.5-2.7
3.3
Volume Resistivity
10^16-10^18 Ohm·cm
10¹⁴ Ω·cm
Dielectric Strength
15-20 kV/mm
—
Chemical resistance
Acids
Good resistance
Good
Bases
Good resistance
Fair
Solvents
Poor resistance to aromatic and chlorinated hydrocarbons
—
UV Resistance
Poor
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (check local facilities)
Recyclable
Recycling Code
6 (PS)
1
Carbon Footprint
Lower than virgin PS
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %