LDPE vs. CAP

Both LDPE and CAP are thermoplastics. There are 10 material properties with values for both materials. Properties with values for just one material (21, in this case) are not shown.

For each property being compared, the top bar is LDPE and the bottom bar is CAP.

Low Density Polyethylene (LDPE)Cellulose Acetate Propionate (CAP)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		0.92
Density, g/cm³		1.2

Glass Transition Temperature, °C		-130
Glass Transition Temperature, °C		190

Specific Heat Capacity, J/kg-K		2300
Specific Heat Capacity, J/kg-K		1480

Strength to Weight: Axial, points		2.1
Strength to Weight: Axial, points		6.5 to 10

Strength to Weight: Bending, points		8.8
Strength to Weight: Bending, points		17 to 23

Tensile Strength: Ultimate (UTS), MPa		7.0
Tensile Strength: Ultimate (UTS), MPa		28 to 45

Thermal Conductivity, W/m-K		0.36
Thermal Conductivity, W/m-K		0.25

Thermal Diffusivity, mm²/s		0.17
Thermal Diffusivity, mm²/s		0.14

Thermal Expansion, µm/m-K		220
Thermal Expansion, µm/m-K		14

Vicat Softening Temperature, °C		50
Vicat Softening Temperature, °C		85 to 110

LDPE vs. CAP

Material Properties

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