Comparison
rPET Fiber Colored vs PETG
A side-by-side comparison of Recycled Polyethylene Terephthalate Fiber Grade Colored and Polyethylene Terephthalate Glycol.
Physical
Density
1.38-1.40 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.1-0.3 %
0.13 %
Transparency
Opaque (due to colorant)
Transparent
Shrinkage
1.5-2.5 %
0.2 – 0.5 %
Mechanical
Young's Modulus
2.5-3.5 GPa
2.1 GPa
Tensile Strength
45-65 MPa
50 MPa
Elongation at Break
20-50 %
120 %
Impact Strength (Izod)
N/A (fiber application)
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
70-80 °C
80 °C
Melting Point
250-260 °C
—
Continuous Service Temperature
70-80 °C
65 °C
Heat Deflection Temperature
50-60 °C (0.45 MPa)
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.0-3.2
3.3
Volume Resistivity
10^12-10^14 Ohm·cm
10¹⁴ Ω·cm
Dielectric Strength
15-20 kV/mm
—
Chemical resistance
Acids
Good resistance to dilute acids
Good
Bases
Poor resistance to strong bases
Fair
Solvents
Resistant to most organic solvents
—
UV Resistance
Moderate
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (as PET)
Recyclable
Recycling Code
1 (PET)
1
Carbon Footprint
Significantly lower than virgin polyester fiber
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %