Thermoset PI vs. EVA

Thermoset PI belongs to the thermoset plastics classification, while EVA 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 EVA.

Thermoset Polyimide (PI)Ethylene Vinyl Acetate (EVA)

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Material Properties

Density, g/cm³		1.4 to 1.6
Density, g/cm³		0.93 to 1.0

Dielectric Strength (Breakdown Potential), kV/mm		20
Dielectric Strength (Breakdown Potential), kV/mm		21

Elongation at Break, %		2.0 to 5.9
Elongation at Break, %		300 to 800

Maximum Temperature: Decomposition, °C		330
Maximum Temperature: Decomposition, °C		450

Specific Heat Capacity, J/kg-K		1130
Specific Heat Capacity, J/kg-K		1400

Strength to Weight: Axial, points		6.5 to 16
Strength to Weight: Axial, points		0.87 to 10

Strength to Weight: Bending, points		16 to 30
Strength to Weight: Bending, points		4.8 to 26

Tensile Strength: Ultimate (UTS), MPa		37 to 81
Tensile Strength: Ultimate (UTS), MPa		3.0 to 35

Thermal Conductivity, W/m-K		0.29 to 1.7
Thermal Conductivity, W/m-K		0.34

Thermal Diffusivity, mm²/s		0.18 to 0.95
Thermal Diffusivity, mm²/s		0.25 to 0.26

Thermoset PI vs. EVA

Material Properties

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