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A composite geomembrane

A composite geomembrane and geotextile technology, applied in synthetic resin layered products, building elements, layered products, etc., can solve the problems of shortening the service life of the geomembrane, high brittleness of the geomembrane, and great potential safety hazards, and achieves a high level of safety. The effect of UV resistance, strong chemical resistance and long service life

Inactive Publication Date: 2015-04-01
NANYANG FENGHUI PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing geomembranes are mainly made of high-density polyethylene single-layer or double-layer anti-seepage membrane technology. Such geomembranes are relatively brittle. During use or construction, crack-induced stress can easily make the anti-seepage layer of the membrane Cracks appear, and even the geomembrane is damaged, which greatly shortens the service life of the geomembrane
In addition, high-density polyethylene, the main material of the existing geomembrane, is a flammable material, which is prone to fire when exposed to open flames, and poses a great safety hazard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A composite geomembrane, comprising a non-woven fabric layer, a geotextile layer and an anti-seepage layer, characterized in that: the anti-seepage membrane layer comprises a first anti-seepage layer, a second anti-seepage layer and a third anti-seepage layer, The first anti-seepage layer, the second anti-seepage layer and the third anti-seepage layer are combined together in this order. The anti-seepage film layer is made of high-density polyethylene and linear high-density polyethylene. The high-density polyethylene Density polyethylene accounted for 50 parts by weight, the linear low density polyethylene accounted for 50 parts by weight, and the components of the anti-seepage film layer also include auxiliary materials, and the auxiliary materials include antioxidants, Anti-ultraviolet absorber, anti-aging agent, carbon black and flame retardant, the weight parts of described antioxidant, anti-ultraviolet absorber, anti-aging agent, carbon black and flame retardant ar...

Embodiment 2

[0019] A composite geomembrane includes a non-woven fabric layer, a geotextile layer and an anti-seepage film layer, and the anti-seepage film layer is arranged between the upper non-woven fabric and the lower geotextile layer. The anti-seepage film layer includes a first anti-seepage layer, a second anti-seepage layer and a third anti-seepage layer, and the first anti-seepage layer, the second anti-seepage layer and the third anti-seepage layer are combined together in this order , the anti-seepage film layer is made of high-density polyethylene and linear high-density polyethylene, the high-density polyethylene accounts for 60 parts by weight, and the linear low-density polyethylene accounts for 60 parts by weight is 40, the thickness of the first anti-seepage layer is 0.6 mm, the thickness of the second anti-seepage layer is 2.0 mm and the thickness of the third anti-seepage layer is 2.5 mm. The components of the anti-seepage film layer also include auxiliary materials. De...

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Abstract

A composite geomembrane is provided. The composite geomembrane comprises a non-woven fabric layer, a geotechnical cloth layer and an impermeable membrane layer. The impermeable membrane layer comprises a first impermeable layer, a second impermeable layer and a third impermeable layer. The first impermeable layer, the second impermeable layer and the third impermeable layer are combined in order. The impermeable membrane layer is prepared from 30-80 parts by weight of high density polyethylene and 40-60 parts by weight of linear high density polyethylene. The impermeable membrane layer also comprises following auxiliary materials by weight: 0.05-0.4 part of an antioxidant, 0.1-0.6 part of an ultraviolet-light-resistant absorbent, 0.1-0.3 part of an anti-ageing agent, 0.05-0.5 part of carbon black, 0.1-0.5 part by weight of a fire retardant, and the like. The composite geomembrane has high impermeability, chemical stability and penetration resistance, effectively prevents permeation of harmful chemical compounds, and has good stretching flexibility and resistance to stress cracking. In addition, addition of the auxiliary materials improves safety performance of the composite geomembrane and largely prolongs the service lifetime of the composite geomembrane.

Description

technical field [0001] The invention belongs to the field of waterproof materials, in particular to a geomembrane, in particular to a composite geomembrane. Background technique [0002] Geomembrane is a very good waterproof and anti-seepage basic building material. At present, it has been widely used in infrastructure construction in many fields, such as environmental sanitation, water conservancy, municipal engineering, gardens, petrochemicals, agriculture, mining, aquaculture, etc. Existing geomembranes are mainly made of high-density polyethylene single-layer or double-layer anti-seepage membrane technology. Such geomembranes are relatively brittle. During use or construction, crack-induced stress can easily make the anti-seepage layer of the membrane Cracks appear, and even the geomembrane is damaged, which greatly shortens the service life of the geomembrane. In addition, high-density polyethylene, the main material of the existing geomembrane, is a flammable materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/12B32B27/18B32B27/32
CPCB32B27/12B32B27/18B32B27/32B32B2307/3065B32B2307/552B32B2307/726B32B2307/752B32B2419/00
Inventor 朱培涛崔号强李晓洋梅全东
Owner NANYANG FENGHUI PLASTIC
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