The anti-seepage geotextile uses the plastic film as the anti-seepage base material, and the non-woven fabric composite anti-seepage material, its anti-seepage performance mainly depends on the anti-seepage performance of the plastic film.
Plastic films used for anti-seepage applications at home and abroad mainly include polyvinyl chloride (PVC) and polyethylene (PE), which are a kind of polymer chemically flexible materials with a small specific gravity, strong extensibility, high adaptability to deformation, and corrosion resistance , Low temperature resistance, good frost resistance. The main mechanism is the impermeability of the plastic film to block the leakage path of the earth dam, with its greater tensile strength and elongation to withstand water pressure and adapt to the deformation of the dam body; and the non-woven fabric is also a polymer short fiber chemical The material, formed by needle punching or hot bonding, has high tensile strength and extensibility. 0010010 nbsp;
When it is combined with plastic film, it not only increases the tensile strength and puncture resistance of the plastic film, but also has a rough surface , Increase the friction coefficient of the contact surface, which is conducive to the stability of the composite geomembrane and protective layer. At the same time, they have good corrosion resistance to bacteria and chemical action, not afraid of acid, alkali, salt corrosion.