The geomembrane uses a plastic film as the anti-seepage substrate, a geotextile material composited with the non-woven fabric, and the anti-seepage performance of the new material geomembrane mainly depends on the anti-seepage performance of the plastic film.
The main mechanism is to block the water leakage channel of the earth dam by the impermeability of the plastic film, to withstand the water pressure and adapt to the deformation of the dam with its large tensile strength and elongation; and the non-woven fabric is also a polymer short fiber chemistry. The material, through needle punching or hot-bonding, has high tensile strength and elongation. When combined with plastic film, it not only increases the tensile strength and puncture resistance of the plastic film, but also the rough surface of the non-woven fabric. The friction coefficient of the contact surface is increased, which is beneficial to the stability of the composite geomembrane and the protective layer. At the same time, they have good corrosion resistance to bacteria and chemicals, and are not afraid of acid, alkali and salt erosion. They have a long service life in the case of avoiding light.
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