Comparison
Hydrolysis Resistant Thermoplastic Polyurethane for Medical Applications vs PETG
A side-by-side comparison of Thermoplastic Polyurethane (TPU) - Hydrolysis Resistant Grade for Medical and Polyethylene Terephthalate Glycol.
Physical
Density
1.15 - 1.20 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.6 - 1.0 %
0.13 %
Transparency
Clear to Translucent
Transparent
Shrinkage
0.6 - 1.4 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.01 - 0.08 GPa
2.1 GPa
Tensile Strength
20 - 40 MPa
50 MPa
Elongation at Break
500 - 750 %
120 %
Impact Strength (Izod)
Good (especially notched)
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-40 to -30 °C
80 °C
Melting Point
150 - 170 °C
—
Continuous Service Temperature
-40 to 80 °C
65 °C
Heat Deflection Temperature
40 - 60 °C
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
5.2 - 6.2
3.3
Volume Resistivity
10^11 - 10^13 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
16 - 24 kV/mm
—
Chemical resistance
Acids
Good
Good
Bases
Good
Fair
Solvents
Resists oils, greases; swells in strong acids, ketones
—
UV Resistance
Fair
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Recyclable (thermoplastic)
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %