Comparison
Hot Melt Adhesive Grade Styrene-Isoprene-Styrene TPE vs PETG
A side-by-side comparison of Styrene-Isoprene-Styrene (SIS) Block Copolymer - Hot Melt Adhesive Grade and Polyethylene Terephthalate Glycol.
Physical
Density
0.91 - 0.93 g/cm³
1.27 g/cm³
Water Absorption (24h)
0.1 %
0.13 %
Transparency
Opaque
Transparent
Shrinkage
1.0 - 2.0 %
0.2 – 0.5 %
Mechanical
Young's Modulus
0.001 - 0.008 GPa
2.1 GPa
Tensile Strength
1 - 4 MPa
50 MPa
Elongation at Break
600 - 900 %
120 %
Impact Strength (Izod)
Poor
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
-55 to -50 °C
80 °C
Melting Point
N/A (softening point around 60-80 °C)
—
Continuous Service Temperature
-50 to 70 °C
65 °C
Heat Deflection Temperature
N/A
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
2.5 - 3.0
3.3
Volume Resistivity
10^15 - 10^17 Ohm-cm
10¹⁴ Ω·cm
Dielectric Strength
20 - 30 kV/mm
—
Chemical resistance
Acids
Good
Good
Bases
Good
Fair
Solvents
Resists water, dilute acids/bases; dissolves in aromatic and chlorinated hydrocarbons
—
UV Resistance
Poor
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Limited
Recyclable
Recycling Code
7 (Other)
1
Carbon Footprint
Moderate
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %