Multilayer compound geomembrane used for soil remediation and production method thereof

A multi-layer composite and soil remediation technology, applied in the field of soil remediation, can solve problems such as poor corrosion resistance and weather resistance, soil secondary pollution, poor performance stability, etc., to achieve improved oxidation resistance, easy access to raw materials, and equipment less dependent effects

Active Publication Date: 2019-06-11
广州华鑫检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a multi-layer composite geomembrane for soil restoration. This geomembrane overcomes the poor corrosion resistance and weather resistance of the traditional geomembrane for soil restoration, poor performance stability, and long-term use. The technical problem of soil secondary pollution has the advantages of excellent weather resistance, corrosion resistance, flame retardancy and anti-seepage performance, and longer service life. At the same time, the invention also provides the multilayer composite geomembrane for soil restoration. Preparation

Method used

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  • Multilayer compound geomembrane used for soil remediation and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] A multilayer composite geomembrane for soil restoration comprises a weather-resistant layer, a composite anti-corrosion and anti-seepage layer, and a weather-resistant layer in sequence from top to bottom; the weather-resistant layer and the composite anti-corrosion and anti-seepage layer are all bonded by an adhesive layer.

[0032] Wherein, the weather-resistant layer is made of polytetrafluoroethylene.

[0033] The composite anti-corrosion and anti-seepage layer is composed of glycidyl methacrylate grafted high-density polyethylene and 2,2-bis(3-amino-4-hydroxyphenyl)-hexafluoropropane and thiazolidine-2,4 -The polycondensate formed by polycondensation of dicarboxylic acid is blended and grafted, and then doped with surface-modified flake graphite.

[0034] The adhesive layer is composed of 30 parts of epoxy resin, 5 parts of 2,2-bis(4-isocyanatophenyl)hexafluoropropane, 50 parts of acrylic pressure-sensitive adhesive, 5 parts of nano-ceramic soil, and 60 parts of et...

Embodiment 2

[0041] A multilayer composite geomembrane for soil restoration comprises a weather-resistant layer, a composite anti-corrosion and anti-seepage layer, and a weather-resistant layer in sequence from top to bottom; the weather-resistant layer and the composite anti-corrosion and anti-seepage layer are all bonded by an adhesive layer.

[0042] The weather-resistant layer is made of polyvinylidene fluoride.

[0043] The composite anti-corrosion and anti-seepage layer is composed of glycidyl methacrylate grafted high-density polyethylene and 2,2-bis(3-amino-4-hydroxyphenyl)-hexafluoropropane and thiazolidine-2,4 -The polycondensate formed by polycondensation of dicarboxylic acid is blended and grafted, and then doped with surface-modified flake graphite.

[0044] The adhesive layer is composed of 33 parts of epoxy resin, 6.5 parts of 2,2-bis(4-isocyanatophenyl)hexafluoropropane, 55 parts of acrylic pressure-sensitive adhesive, 7 parts of nano-ceramic soil, and 65 parts of ethanol. ...

Embodiment 3

[0051] A multilayer composite geomembrane for soil restoration comprises a weather-resistant layer, a composite anti-corrosion and anti-seepage layer, and a weather-resistant layer in sequence from top to bottom; the weather-resistant layer and the composite anti-corrosion and anti-seepage layer are all bonded by an adhesive layer.

[0052] Wherein, the weather-resistant layer is made of polytetrafluoroethylene.

[0053] The composite anti-corrosion and anti-seepage layer is composed of glycidyl methacrylate grafted high-density polyethylene and 2,2-bis(3-amino-4-hydroxyphenyl)-hexafluoropropane and thiazolidine-2,4 -The polycondensate formed by polycondensation of dicarboxylic acid is blended and grafted, and then doped with surface-modified flake graphite.

[0054] The adhesive layer is composed of 35 parts of epoxy resin, 7 parts of 2,2-bis(4-isocyanatophenyl)hexafluoropropane, 60 parts of acrylic pressure-sensitive adhesive, 8 parts of nano-ceramic soil, and 70 parts of et...

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Abstract

The invention provides multilayer compound geomembrane used for soil remediation. The multilayer compound geomembrane used for soil remediation comprises a weather-resistant layer, a compound anti-corrosion and impervious layer and a weather-resistant layer from top to bottom in sequence; the weather-resistant layers and the compound anti-corrosion and impervious layer bond through a bonding agentseparately; the weather-resistant layers are produced from one of teflon and polyvinylidene fluoride; and the compound anti-corrosion and impervious layer is formed by making glycidyl methacrylate-grafted high-density polyethylene and a polymer, which is formed by conducting condensation polymerization on 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoropropane and thiazolidine-2,4-dicarboxylic acid, subjected to blending and grafting, and then doped with surface-modification crystalline flake graphite. The invention furthermore discloses a production method of the multilayer compound geomembrane used for soil remediation. The multilayer compound geomembrane used for soil remediation has the advantages of excellent weather resistance, corrosion resistance, flame retardancy and impervious performance, and a longer service life.

Description

technical field [0001] The invention relates to the technical field of soil restoration, in particular to a multilayer composite geomembrane for soil restoration and a preparation method thereof. Background technique [0002] In recent years, with my country's economic development and urban layout adjustment, many fertilizer factories, pesticide factories, chemical factories and other enterprises that discharge a large amount of organic waste have moved out of the city center, and a large number of "brownfields" have emerged. Among them, the concentration of organic pollutants in some soils is very high, and some pollutants even migrate to groundwater and spread to cause a wider range of pollution. These polluted soils pose a serious threat to people's health and must be repaired before they can be restored. Put into use. [0003] At present, there are many measures to remediate contaminated soil, mainly including isolation and embedding and adding soil remediation agents t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/18B32B7/12C09J133/04C09J163/00C09J11/04C09J11/06C08L51/06C08L77/00C08K9/06C08K7/00C08K3/04B29D7/01
Inventor 鲍可可
Owner 广州华鑫检测技术有限公司
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