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Composite geomembrane

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Composite geomembrane

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Composite geomembrane

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Description

Product Details

The composite geomembrane is a geomembrane made of plastic film as the impermeable substrate and non-woven fabric. Its anti-seepage performance mainly depends on the anti-seepage performance of the plastic film. At present, the plastic films used in anti-seepage applications at home and abroad mainly include polyvinyl chloride (PVC) and polyethylene (PE), which are polymer chemical flexible materials with small specific gravity, strong extensibility and high adaptability to deformation. Corrosion resistance, low temperature resistance, good frost resistance. The main mechanism is to cut off the water leakage channel of the earth dam with the impermeability of the plastic film, and to withstand the water pressure and adapt to the deformation of the dam body with its large tensile strength and elongation. The non-woven fabric is also a kind of polymer short fiber chemical material, which has high tensile strength and elongation through needle punching or thermal bonding. After being combined with the plastic film, not only the tensile strength and puncture resistance of the plastic film are increased, but also the surface roughness, 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 chemical action, not afraid of acid, alkali, salt erosion.

Main use

It is suitable for river dams, hydraulic tunnels, canal reservoirs, metallurgical and chemical pollution prevention, construction, transportation, environmental protection and other projects.

PE film thickness range:0.20mm-0.8mm

Product specifications:Width 4-6m, weight 300g/m2 -2000g/m2

Product category:One cloth and one film, two cloth and one film

Non-woven composite geomembrane technical indicators: (in line with GB/T17642-2008)

Product weight (g/m²)		400	500	600	700	800	900	1000
PE film thickness (mm)		0.20~0.35			0.3~0.6
Common Specifications	One cloth and one film (g/m²/mm)	150/0.25	200/0.3	300/0.3	300/0.4	300/0.5	400/0.5	400/0.6
	Two cloth and one membrane (g/m/mm)	100/0.2/100	100/0.3/100	150/0.3/150	200/0.3/200	200/0.4/200	200/0.5/200	250/0.5/250
Mass deviation per unit area (%)≤		-10
Breaking strength (KN/m)≥		5.0	7.5	10.0	12.0	14.0	16.0	18.0
Elongation at break (%)		30～100
Tearing strength (KN)≥		0.15	0.25	0.32	0.40	0.48	0.56	0.62
CBR bursting strength (KN)≥		1.1	1.5	1.9	2.2	2.5	2.8	3.0
Vertical permeability coefficient (cm/s)≤		10^-12
Hydrostatic pressure resistance (Mpa)≥		0.4~0.6			0.6~0.1
Description		1. PE film thickness 0.2~0.8mm. 2. The composite geomembrane products can be arbitrarily reserved for welding edges according to the technical requirements of the demander, or without welding edges.