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

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...

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 material itself

2. The production process is complicated, and the cost of equipment and raw materials is high

Although this kind of rough geomembrane will not damage the surface of the original smooth geomembrane, it overcomes the above shortcomings to a certain extent, but not only the production process is complicated, but the spinneret layer is easy to fall off, which affects the engineering quality of the anti-seepage project.

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