High-intensity damage-free type flexible roughened surface geomembrane and producing method thereof

A non-destructive, geomembrane technology, applied in soil protection, infrastructure engineering, construction, etc., can solve the problems of breaking strength and elongation at break, affecting the quality of anti-seepage engineering, high cost of equipment and raw materials, etc. Achieve good stability, low equipment cost and raw material cost, good economic and social benefits

Inactive Publication Date: 2013-02-06
山东天海新材料工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The above-mentioned rough surface geomembrane has the following deficiencies: 1. After the high-density polyethylene is modified and foamed, its breaking strength and elongation at break will be greatly affected, and the breaking strength can only reach the same thickness and the same formulation of the glossy film. 55%; the elongation is basically completely destroyed, and can only reach 1/5 of the elongation of the raw

Method used

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  • High-intensity damage-free type flexible roughened surface geomembrane and producing method thereof
  • High-intensity damage-free type flexible roughened surface geomembrane and producing method thereof
  • High-intensity damage-free type flexible roughened surface geomembrane and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1 (single rough geomembrane):

[0034] Production equipment: mixing machine 1, extruder 2, T-die 3 and calendering equipment.

[0035] The kneading machine 1, the extruder 2 and the T-shaped die 3 are equipment configurations for producing multi-layer composite geomembranes by calendering process, and can be used directly.

[0036] On the calendering equipment, a smooth calendering roller 4, a calendering roller with dimples 5 and a cooling roller 6 are sequentially arranged from bottom to top.

[0037] Raw material ratio:

[0038]

[0039] Production process (as attached image 3 shown):

[0040] Feed the well-proportioned raw materials into the kneader 1 for full mixing, and carry out the preliminary molding of the width and thickness through the plasticizing extrusion of the extruder 2 and the shunt molding of the T-shaped die 3 to obtain the initial film of the geomembrane ; Before the initial film is cooled, it is directly introduced into the gap ...

Embodiment 2

[0042] Embodiment 2 (double rough geomembrane):

[0043] Raw material ratio:

[0044]

[0045]

[0046] The production equipment and production process are basically the same as those in Embodiment 1, except that the middle calender roll and the lower calender roll of the calendering equipment are both calender rolls with concave points.

Embodiment 3

[0047] Embodiment three (single-sided calender roll):

[0048] Raw material ratio:

[0049]

[0050] Production equipment and production technology are identical with embodiment one.

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PUM

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Abstract

The invention discloses a high-intensity damage-free type flexible roughened surface geomembrane and a producing method of the high-intensity damage-free type flexible roughened surface geomembrane, belonging to the field of production of a geomembrane. The high-intensity damage-free type flexible roughened surface geomembrane comprises a geomembrane body. The high-intensity damage-free type flexible roughened surface geomembrane is characterized in that the geomembrane body is in a monolayer calendaring membrane structure; and taper convex points are calendered on the upper surface and/or the lower surface of the membrane body. The main raw materials of the geomembrane comprise ethylene-alpha olefin copolymer, high-intensity polyethylene, high-pressure low-intensity polyethylene, antioxygen, ultraviolet light absorber and carbon black. Compared with the prior art, the high-intensity damage-free type flexible roughened surface geomembrane disclosed by the invention has the characteristics of simplicity in production technique, excellent performance index, and the like, can be widely applied to a railway anti-shock layer, a refuse landfill, a tunnel, a reservoir, a canal, a sewage treatment tank, a landscape lake and other environment-friendly anti-seepage projects, and has very good popularizing and applying values.

Description

technical field [0001] The invention relates to a geomembrane, in particular to a high-strength non-destructive flexible matte geomembrane and a production method thereof. Background technique [0002] Due to the high friction coefficient of the rough geomembrane, it can better adapt to the design needs of steep slopes and vertical engineering. In the field of infiltration, rough geomembrane has been well promoted and applied. The rough geomembranes in the prior art are all multi-layer membrane structures processed from high-density polyethylene materials, including a base layer, a rough surface sprayed layer, and the like. In the production process of this kind of rough film, the rough surface spraying raw materials and the base layer raw materials enter the multi-layer molding head of the extruder side by side. Under the action of foaming agent and inert gas, the high-density polyethylene material is modified and surface destructive foaming to obtain a matte multilayer f...

Claims

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Application Information

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IPC IPC(8): E02D3/00C08L23/06C08L23/08C08K3/04
Inventor 王家栋周广庆张景英赵玉东肖明张明
Owner 山东天海新材料工程有限公司
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