20 mil(0.5 mm) PVC Geomembrane

Material：Polyvinyl Chloride (PVC) Resin
Nominal Thickness：20 mil / 0.5 mm
Shipping Method：logistics
Product Category： PVC Geomembrane, Geomembrane
Appearance：rolls, black, dark gray or customized
Price：the price of 20 mil(0.5 mm) PVC Geomembrane is not fixed and is influenced by various factors. For more details, please consult us.

A 20-mil PVC geomembrane is a flexible polymeric sheet barrier, manufactured primarily from Polyvinyl Chloride (PVC) resin, and compounded with plasticizers, stabilizers, UV absorbers, and other additives via calendering or coating processes. With a nominal thickness of 20 mils (0.5 mm), it offers an optimal balance between performance and cost for medium-duty engineering applications.

Performance

The performance of 20 mil (0.5 mm) PVC geomembrane is as follows:

Excellent Impermeability: Hydraulic conductivity K ≤ 1×10⁻¹¹ cm/s, effectively containing liquids, vapors, and various chemical solutions.
High Flexibility and Puncture Resistance: The inherent properties of PVC allow for high elongation at break (200%-300%), enabling it to accommodate substrate settlement and deformation. It also offers superior puncture resistance compared to HDPE geomembranes of equivalent thickness, effectively resisting penetration from roots and sharp debris.
Superior Weldability: PVC sheets can be seamlessly joined using hot-air or solvent welding techniques, creating high-strength, reliable seams and facilitating fast installation.
Good Chemical Resistance: Resists a wide range of acids, alkalis, and salts, making it suitable for containing leachate and wastewater in harsh environments.
Weather and UV Resistance: Added UV absorbers and carbon black effectively slow down the aging process caused by outdoor exposure, extending service life.
Low-Temperature Flexibility: Remains flexible and does not become brittle at temperatures as low as -20°C, making it suitable for use in cold climates.
Compatibility: The 20 mil (0.5 mm) PVC geomembrane can be used effectively in conjunction with other geosynthetics like geosynthetic clay liners (GCLs).

Application

The 20-mil PVC geomembrane is suited for projects requiring robust containment where environmental stresses are moderate.

Environmental Engineering:
- Temporary covers or secondary liners for municipal solid waste landfills.
- Liners for industrial non-hazardous waste sites and tailings impoundments.
Water Conservancy and Hydropower Projects:
- Canal and ditch linings for irrigation and water conveyance.
- Liners for artificial lakes, decorative ponds, and reservoirs.
Construction Engineering:
- Waterproofing membranes for building basements and tunnels.
- Root barriers and waterproofing for rooftop gardens.
Agriculture and Aquaculture:
- Liners for aquaculture ponds (e.g., fish, shrimp ponds).
- Floating covers for biogas digesters.
Other Applications:
- Liners for salt evaporation ponds.
- Moisture and seepage barriers in highway and railway subgrades.

Specifications

The specifications of 20 mil (0.5 mm) PVC geomembrane are as follows:

Thickness: 20 mil = 0.5 mm
Width: Typically 2.0m, 2.5m, 4.0m; customizable based on project requirements.
Roll Length: Typically 25m, 50m, or 100m; customizable.
Unit Area Weight: Approximately 650 – 750 g/m² (varies based on formulation and reinforcement).
Typical Physical & Mechanical Properties (Referencing ASTM and GB/T Standards):

Property	Test Standard	Typical Value (20-mil Reinforced PVC)
Thickness	ASTM D5199	0.5 mm (±0.05 mm)
Tensile Strength (MD/XD)	ASTM D882	≥ 20 MPa / ≥ 18 MPa
Elongation at Break (MD/XD)	ASTM D882	≥ 200% / ≥ 180%
Tear Resistance	ASTM D1004	≥ 80 N/mm
Puncture Resistance (CBR)	ASTM D3787	≥ 1000 N
Low-Temperature Bend	ASTM D1790	No Cracking at -25°C
Dimensional Stability	ASTM D1204	≤ 3%
Hydraulic Conductivity	ASTM E96	≤ 1×10⁻¹¹ cm/s