What material is geomembrane
Release time:
2025-05-13
Geo-membrane achieves anti-seepage through physical barriers of polymer materials, and is both flexible and durable. It is one of the key synthetic materials in civil engineering.
Geofilm is a waterproof barrier material made of polymer polymers (such as polyethylene, polyvinyl chloride, etc.) as the base material and is made through extrusion, stretching and other processes. The core function is to prevent liquid or gas from penetration. The following are its key characteristics and categories:
1. Material composition and type
Substrate: The main use of plastic films (such as polyethylene (PE), polyvinyl chloride (PVC), ethylene/vinyl acetate copolymer (EVA)) as the anti-seepage layer. ECB (ethylene ethylene acetate modified asphalt blend) is used in some special scenarios.
Common Categories:
According to density: low-density polyethylene (LDPE), high-density polyethylene (HDPE).
According to structure, it is divided into single-layer geomembrane and composite geomembrane (such as one cloth, one film, two cloth and one film, combined with non-woven fabrics to enhance mechanical properties).
2. Core Performance
Waterproofness: The impermeable property is the basis of its design and can block liquid and gas penetration.
Mechanical properties: High tensile strength, low elongation, strong tear and puncture resistance, adapting to engineering deformation.
Durability: chemical corrosion resistance, low temperature resistance (freeze resistance), anti-aging, and the service life can reach 40-50 years in a clean water environment.
3. Application areas
It is widely used in water conservancy projects (such as dams, reservoirs), municipal projects (landfills, tunnels), agriculture (fish pond seepage prevention), and environmental protection projects (pollution isolation).
Summary: Geo-membrane achieves anti-seepage through physical barriers of polymer materials, and is both flexible and durable. It is one of the key synthetic materials in civil engineering.
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