Thermoset PI vs. PHB

Thermoset PI belongs to the thermoset plastics classification, while PHB belongs to the thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.

For each property being compared, the top bar is thermoset PI and the bottom bar is PHB.

Thermoset Polyimide (PI)Polyhydroxybutyrate (PHB)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		1.4 to 1.6
Density, g/cm³		1.3

Electrical Resistivity Order of Magnitude, 10^x Ω-m		15
Electrical Resistivity Order of Magnitude, 10^x Ω-m		14

Elongation at Break, %		2.0 to 5.9
Elongation at Break, %		7.5

Flexural Strength, MPa		60 to 100
Flexural Strength, MPa		20

Heat Deflection Temperature At 1.82 MPa (264 psi), °C		370
Heat Deflection Temperature At 1.82 MPa (264 psi), °C		60

Maximum Temperature: Mechanical, °C		260
Maximum Temperature: Mechanical, °C		120

Strength to Weight: Axial, points		6.5 to 16
Strength to Weight: Axial, points		6.7

Strength to Weight: Bending, points		16 to 30
Strength to Weight: Bending, points		17

Tensile Strength: Ultimate (UTS), MPa		37 to 81
Tensile Strength: Ultimate (UTS), MPa		30

Water Absorption After 24 Hours, %		0.14 to 0.24
Water Absorption After 24 Hours, %		0.75

Thermoset PI vs. PHB

Material Properties

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