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Preparation method of low temperature-resistant and anti-puncturing geomembrane

A puncture-resistant, geomembrane technology, used in infrastructure engineering, protection devices, gaskets, etc., can solve the problems of membrane fragmentation, rework, loss engineering, etc., achieve strong tensile strength and tear strength, and improve use safety. The effect of improving the anti-seepage coefficient

Inactive Publication Date: 2018-04-20
MAANSHAN CITY XIN CHENG NANO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In railway laying, landfills, tunnels, canals, reservoirs, dams, sewage pools, eco-city, scenic lakes, aquaculture, and anti-seepage and waterproof projects of railways and roads, the existing geomembranes used are all high-grade geomembranes. Density polyethylene geomembrane has brought greater convenience to the project, but with the popularization of geomembrane, more and more application environments, the requirements for geomembrane are getting higher and higher, and some have higher requirements for anti-cold brittleness Projects, or large projects with uneven settlement or local settlement, such as mine heap leaching sites, landfills and other projects that require high elongation and puncture strength of anti-seepage materials, the existing geomembrane thermal expansion and contraction After washing, the membrane surface after construction is loose when it is hot and tense when it is cold, which affects the construction and construction quality, and is easy to damage the fixing facilities of the geomembrane. In addition, the membrane after construction at a very low temperature may crack, causing direct economic losses or engineering rework

Method used

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  • Preparation method of low temperature-resistant and anti-puncturing geomembrane

Examples

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Embodiment 1

[0015] A method for preparing a low-temperature-resistant puncture-resistant geomembrane, comprising the following steps:

[0016] (1) Prepare raw materials by weight: 50 parts of linear low-density polyethylene, 25 parts of high-density polyethylene, 8 parts of elm branch and leaf powder, 16 parts of modified carboxylated nitrile rubber nanocomposite material, 4 parts of filler, 1.5 parts of stabilizer share;

[0017] Wherein, the preparation method of the modified carboxylated nitrile rubber nanocomposite material is: by weight, 8 parts of clay with a particle diameter of 2-20nm are ultrasonically dispersed in deionized water equivalent to 5 times its weight to obtain a suspension, and the Add 2.4 parts of zinc oxide, 1.6 parts of hexamethylene diisocyanate, and 0.5 parts of sulfur to the suspension, stir for 1.5 hours at a temperature of 80°C, then add 45 parts of nitrile rubber latex, After stirring for 1.5 hours, add a flocculant to flocculate, obtain a modified carboxyl...

Embodiment 2

[0026] A method for preparing a low-temperature-resistant puncture-resistant geomembrane, comprising the following steps:

[0027] (1) Prepare raw materials by weight: 45 parts of linear low-density polyethylene, 22 parts of high-density polyethylene, 6 parts of elm branch and leaf powder, 14 parts of modified carboxylated nitrile rubber nanocomposite material, 6 parts of filler, 1 part of stabilizer share;

[0028] Wherein, the preparation method of the modified carboxylated nitrile rubber nanocomposite material is as follows: by weight, 6 parts of clay with a particle diameter of 2-20nm are ultrasonically dispersed in deionized water equivalent to 4 times its weight to obtain a suspension. Add 2.2 parts of zinc oxide, 1.4 parts of hexamethylene diisocyanate, and 0.2 parts of sulfur to the suspension, stir for 2 hours at a temperature of 85°C, then add 50 parts of nitrile rubber latex, After stirring for 2 hours, add a flocculant to flocculate, obtain a modified carboxylated...

Embodiment 3

[0036] A method for preparing a low-temperature-resistant puncture-resistant geomembrane, comprising the following steps:

[0037] (1) Prepare raw materials by weight: 55 parts of linear low-density polyethylene, 28 parts of high-density polyethylene, 10 parts of elm branch and leaf powder, 20 parts of modified carboxylated nitrile rubber nanocomposites, 2 parts of filler, 2 parts of stabilizer share;

[0038] Wherein, the preparation method of the modified carboxylated nitrile rubber nanocomposite material is: by weight, 10 parts of clay with a particle diameter of 2-20nm is ultrasonically dispersed in deionized water equivalent to 6 times its weight to obtain a suspension, and the Add 2.6 parts of zinc oxide, 1.8 parts of hexamethylene diisocyanate, and 0.8 parts of sulfur to the suspension, stir for 1 hour at a temperature of 75°C, then add 40 parts of nitrile rubber latex, After stirring for 1 hour, add a flocculant to flocculate, obtain a modified carboxylated nitrile ru...

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Abstract

The invention belongs to the technical field of geomembrane processing, and in particular relates to a method for preparing a low-temperature-resistant and puncture-resistant geomembrane, which includes the preparation of modified carboxylated nitrile rubber nanocomposite materials, the preparation of intermediate powder, and the preparation of products. Compared with the prior art, the present invention has the following advantages: the modified carboxylated nitrile butadiene rubber nano-composite material in the present invention makes the composite material have stronger tensile strength and tear strength due to the huge specific surface area of ​​clay, which can contribute to The geomembrane adapts to complex terrain and can meet the requirements of low temperature conditions in cold areas on the elongation performance and puncture resistance of the material. The intermediate powder can effectively improve the anti-seepage coefficient of the geomembrane, and also has strong weather resistance, which can greatly improve the geomembrane. The use safety of geomembrane under complex conditions.

Description

technical field [0001] The invention belongs to the technical field of geomembrane processing, and in particular relates to a preparation method of a low-temperature-resistant and puncture-resistant geomembrane. Background technique [0002] In railway laying, garbage landfills, tunnels, canals, reservoirs, dams, sewage pools, eco-city, scenic lakes, aquaculture, and anti-seepage and waterproof projects of railways and roads, the existing geomembranes are all high-grade geomembranes. Density polyethylene geomembrane has brought greater convenience to the project, but with the popularization of geomembrane, more and more application environments, the requirements for geomembrane are getting higher and higher, and some of them have higher requirements for anti-cold brittleness Projects, or large projects with uneven settlement or local settlement, such as mine heap leaching sites, landfills and other projects that require high elongation and puncture strength of anti-seepage m...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L97/02C08L15/00C08K13/02C08K3/22C08K3/34C08J5/18E02D31/00E02D31/02
CPCC08J5/18C08J2323/08C08J2415/00C08J2423/06C08J2497/02C08K3/346C08K13/02C08K2003/2296E02D31/006E02D31/025E02D2450/106
Inventor 程晓林
Owner MAANSHAN CITY XIN CHENG NANO NEW MATERIAL TECH CO LTD
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