Comparison
Urea-Formaldehyde UV Stable vs PETG
A side-by-side comparison of Urea-Formaldehyde Resin and Polyethylene Terephthalate Glycol.
Physical
Density
1.45-1.55 g/cm³
1.27 g/cm³
Water Absorption (24h)
1.5-3.0 %
0.13 %
Transparency
Clear to Off-White
Transparent
Shrinkage
5-8 %
0.2 – 0.5 %
Mechanical
Young's Modulus
6-12 GPa
2.1 GPa
Tensile Strength
50-80 MPa
50 MPa
Elongation at Break
0.5-2.0 %
120 %
Impact Strength (Izod)
3-8 J/m
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
Undetermined (Degradation)
80 °C
Melting Point
N/A
—
Continuous Service Temperature
60-100 °C
65 °C
Heat Deflection Temperature
40-80 °C
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
5.5-7.0
3.3
Volume Resistivity
10^8-10^11 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
9-15 kV/mm
—
Chemical resistance
Acids
Poor resistance
Good
Bases
Poor resistance
Fair
Solvents
Resistant to hydrocarbons, swells in polar solvents
—
UV Resistance
Poor
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Difficult
Recyclable
Recycling Code
N/A
1
Carbon Footprint
Low to Moderate (Formaldehyde concerns)
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %