Polyethylene geomembrane and preparation method thereof

A polyethylene and geomembrane technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of affecting the appearance and the disharmony of the surrounding environment, and achieve the effect of improving the processing performance.

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When these geomembranes are laid on landfills, municipal construction and other environmental protection projects, they seriously affect the appearance and are extremely inconsistent with the surrounding environment.

Method used

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  • Polyethylene geomembrane and preparation method thereof
  • Polyethylene geomembrane and preparation method thereof
  • Polyethylene geomembrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] 1) Weigh the bimodal high-density polyethylene, unimodal linear low-density polyethylene and conductive carbon black according to the weight ratio of 47.5:37.5:15, put them into the high mixer and mix for 3 minutes, as the premix of the conductive layer ; Bimodal high-density polyethylene, unimodal linear low-density polyethylene, antioxidant, carbon black masterbatch are weighed according to the weight ratio of 80:17:1:2, put into high mixer and mix for 3 minutes, as anti-oxidant Premix for the aging layer; weigh bimodal high-density polyethylene, unimodal linear low-density polyethylene, antioxidant, and color masterbatch according to the weight ratio of 80:17:1:2, and put them into the high-mixer Mix for 3 minutes as a premix for the color layer.

[0058] 2) Melt, blend, extrude and granulate the premixed materials obtained in step 1) with a twin-screw extruder, the screw speed is 200 rpm, and the extrusion temperature is between 180 and 200°C to obtain the Invented...

Embodiment 2

[0061] 1) Weigh the bimodal high-density polyethylene, unimodal linear low-density polyethylene and conductive carbon black according to the weight ratio of 25:25:50, put them into the high-mixer and mix them for 3 minutes, as the premix of the conductive layer ; Bimodal high-density polyethylene, unimodal linear low-density polyethylene, antioxidant, carbon black masterbatch are weighed according to the weight ratio of 50:35:5:10, put into high mixer and mix for 3 minutes, as anti-oxidant Premix of the aging layer; weigh bimodal high-density polyethylene, unimodal linear low-density polyethylene, antioxidant, and color masterbatch according to the weight ratio of 50:35:5:10, and put them into the high-mixer Mix for 3 minutes as a premix for the color layer.

[0062] 2) Melt, blend, extrude and granulate the premixed materials obtained in step 1) with a twin-screw extruder, the screw speed is 200 rpm, and the extrusion temperature is between 180 and 200°C to obtain the Invent...

Embodiment 3

[0065] 1) Weigh the bimodal high-density polyethylene, unimodal linear low-density polyethylene and conductive carbon black according to the weight ratio of 45:35:20, put them into the high-mixer and mix them for 3 minutes, as the premix of the conductive layer ; Bimodal high-density polyethylene, unimodal linear low-density polyethylene, antioxidant, carbon black masterbatch are weighed according to the weight ratio of 65:26:3:6, put into high-mixer and mix for 3 minutes, as anti-oxidant Premix for the aging layer; weigh bimodal high-density polyethylene, unimodal linear low-density polyethylene, antioxidant, and color masterbatch according to the weight ratio of 65:26:3:6, and put them into the high-mixer Mix for 3 minutes as a premix for the color layer.

[0066] 2) Melt, blend, extrude and granulate the premixed materials obtained in step 1) with a twin-screw extruder, the screw speed is 200 rpm, and the extrusion temperature is between 180 and 200°C to obtain the Invente...

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Abstract

The invention relates to a polyethylene geomembrane and a preparation method thereof. Preferably, the polyethylene geomembrane sequentially comprises a conducting layer, an anti-aging layer and a color layer from bottom to top. The preparation method comprises steps as follows: melting and blending bimodal high-density polyethylene, unimodal linear low-density polyethylene, conductive carbon black masterbatch, carbon black masterbatch, an antioxidant and masterbatch according to the content of each layer to prepare composition of all layers, and then co-extruding the composition to prepare the polyethylene geomembrane. The polyethylene geomembrane can meet the requirement for various properties of special resin for a high-density polyethylene geomembrane, and compared with special resin for the traditional high-density polyethylene geomembrane, the polyethylene geomembrane has the advantages that the cost is significantly reduced, and the polyethylene geomembrane has greater competitive advantages in the market.

Description

technical field [0001] The invention relates to a polyethylene geomembrane and a preparation method of the polyethylene geomembrane. Background technique [0002] High-density polyethylene geomembrane is a kind of high-grade waterproof material with extremely low permeability coefficient and good flexibility. At the same time, it has the advantages of strong deformation adaptability, high strength, and easy overall connection construction. , Mine tailings treatment, petrochemical tank farms, high-speed railways, municipal construction and other fields. But in actual engineering application and production, HDPE geomembrane still has some problems. [0003] First of all, the small holes in the production of high-density polyethylene geomembrane and the welding points in the project will become leakage points, which seriously affect the quality of the project. The current leakage point detection method is mainly electrical leakage detection. The principle is that after the ge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K13/02C08K3/04C08K5/134C08K5/524C08K3/22B32B27/32B32B27/20
CPCB32B27/08B32B27/18B32B27/20B32B27/32B32B2307/552B32B2307/5825B32B2307/7246C08J5/18C08J2323/06C08J2323/08C08J2423/06C08J2423/08C08K2201/001C08L23/06C08L23/0815C08L2203/16C08L2205/025C08L2205/03C08L2207/062C08L2310/00C08K3/04C08K2003/2251
Inventor 朱天戈杨化浩武鹏者东梅
Owner CHINA PETROLEUM & CHEM CORP
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