Table 1 Physical and mechanical properties of LDPE and HDPE specimens.
From: Characterization technique of gases permeation properties in polymers: H2, He, N2 and Ar gas
Material | LDPE | HDPE |
|---|---|---|
Fabrication | Compression molding | Compression molding |
Density (g/ml) | 0.86 | 0.91 |
Tensile strength (psi) | More than 1400 | More than 4100 |
Hardness (Shore D) | 42 | 68 |
Tensile modulus (psi) | 255,000 | |
Flexural modulus (psi) | 30,000 | 185,000 |
Coefficient of thermal expansion (in./in./°F) | 6 × 10–5 | 6 × 10–5 ~ 7.9 × 10–5 |
