The difference between PVC geomembrane and HDPE
The difference between PVC geomembrane and HDPE
PVC geomembrane and HDPE are both modern and environmentally friendly materials suitable for civil engineering. The comparison between the two is as follows:
Different materials:
1.PVC geomembrane is made of polyvinyl chloride material, which has good softness and plasticity and is easy to process into various shapes. HDPE is a high-density polyethylene material with high toughness and wear resistance.
Different compressive properties:
2.PVC geomembrane has weak compressive strength and is only suitable for covering flexible bottoms. HDPE geomembrane has excellent compressive performance and is suitable for covering various types of bottoms.
Different corrosion resistance:
3.PVC geomembrane has weak resistance to acid and alkali corrosion, and is suitable for environments with low pH values. It cannot be used in fresh water or environments with long-term contact with oils and organic solvents. HDPE geomembrane has good resistance to acid and alkali corrosion, making it more suitable for environments with fresh water and long-term contact with oils and organic solvents.
Different construction requirements:
4.PVC geomembrane is easy to process and suitable for installation using methods such as hot melt welding, electric melt welding, and adhesive fixation. The construction site required for HDPE geomembrane is relatively dry, and methods such as crimping, hot melt welding, and ring hammer fixation must be used for construction.
In summary, the selection of PVC or HDPE geomembranes requires comprehensive consideration based on the specific environmental characteristics of the project.
