Tensile properties

1. Yield strength

2. Breaks strength

3. Yield elongation

4. Break elongation

D6693

Type IV

11KN/m

20KN/m

12%

700%

15KN/m

27KN/m

12%

700%

18KN/m

33KN/m

12%

700%

22KN/m

40KN/m

12%

700%

29KN/m

53KN/m

12%

700%

37KN/m

67KN/m

12%

700%

44 KN/m

80 KN/m

12%

700%

Oxidative induction time

(OIT)

Feature / Material

HDPE Geomembrane

PVC Liner

LDPE Geomembrane

Impermeability

Excellent (very low permeability)

Good, but slightly higher leakage

Good, but lower than HDPE

Chemical Resistance

Excellent (acids, alkalis, oils)

Moderate (not ideal for solvents)

Good, but less than HDPE

UV & Weather Resistance

Very strong (20–50 years lifespan)

Poor to moderate (needs covering)

Moderate (shorter service life)

Mechanical Strength

High tensile, tear, and puncture resistance

Flexible, but weaker strength

Lower tensile strength than HDPE

Flexibility

Rigid, less flexible

Very flexible, easy to install

Flexible, easier than HDPE

Durability / Lifespan

20–50 years

5–15 years

5–15 years

Environmental Safety

Non-toxic, eco-friendly

May release plasticizers over time

Generally safe, but less stable

Cost

Moderate (higher than PVC/LDPE, but long-term cost-saving)

Low initial cost

Moderate (between PVC and HDPE)