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High-temperature-resistant high-density polyethylene geomembrane and preparation method thereof

A high-density polyethylene and geomembrane technology is applied in the field of high-density polyethylene geomembrane to achieve the effects of improving chemical stability, flexibility, tensile properties and stress cracking resistance.

Inactive Publication Date: 2019-11-22
SHANDONG TIANHE PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the existing technologies are aimed at improving the physical and mechanical properties of HDPE geomembranes, and improving the formula raw materials and process conditions, and few studies are conducted on the high temperature resistance of HDPE geomembranes.

Method used

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  • High-temperature-resistant high-density polyethylene geomembrane and preparation method thereof
  • High-temperature-resistant high-density polyethylene geomembrane and preparation method thereof
  • High-temperature-resistant high-density polyethylene geomembrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A high-temperature-resistant high-density polyethylene geomembrane, each raw material component is weighed according to the following proportions by mass:

[0036]

[0037]

[0038] The preparation method is as follows:

[0039] Weigh the above raw materials according to the formula, put them into the mixer and mix for 30 minutes, then send them into the hopper of the three-layer co-extrusion blow molding equipment through the automatic feeder (the temperature setting of each section of the extruder: 185°C, 215°C, 235°C, 235°C, 235°C, 225°C; the connecting body temperature is set to 225°C, the die head temperature is set to 215°C; the length-to-diameter ratio of the extruder screw is 30:1; the die head gap is 3.2mm; the inflation ratio is 1.08; screw speed 52r / min), after the raw materials enter the extruder, they are sheared, melted, plasticized, extruded from the circular die, blown by air, cooled and shaped into a tubular film tube, and then pulled, Cut open a...

Embodiment 2

[0041] A high-temperature-resistant high-density polyethylene geomembrane, each raw material component is weighed according to the following proportions by mass:

[0042]

[0043] The preparation method is as follows:

[0044]Weigh the above raw materials according to the formula, put them into the mixer and mix for 30 minutes, then send them into the hopper of the three-layer co-extrusion blow molding equipment through the automatic feeder (the temperature setting of each section of the extruder: 185°C, 215°C, 235°C, 235°C, 235°C, 225°C; the connecting body temperature is set to 225°C, the die head temperature is set to 215°C; the length-to-diameter ratio of the extruder screw is 35:1; the die head gap is 3.2mm; the inflation ratio is 1.06; screw speed 58r / min), after the raw materials enter the extruder, they are sheared, melted, plasticized, extruded from the circular die, blown by air, cooled and shaped into a tubular film tube, and then pulled, Cut open and flatten in...

Embodiment 3

[0046] A high-temperature-resistant high-density polyethylene geomembrane, each raw material component is weighed according to the following proportions by mass:

[0047]

[0048] The preparation method is as follows:

[0049] Weigh the above raw materials according to the formula, put them into the mixer and mix for 30 minutes, then send them into the hopper of the three-layer co-extrusion blow molding equipment through the automatic feeder (the temperature setting of each section of the extruder: 185°C, 215°C, 235°C, 235°C, 235°C, 225°C; the connecting body temperature is set to 225°C, the die head temperature is set to 215°C; the length-to-diameter ratio of the extruder screw is 40:1; the die head gap is 3.2mm; the inflation ratio is 1.02; screw speed 60r / min), after the raw materials enter the extruder, they are sheared, melted, plasticized, extruded from the circular die, blown by air, cooled and shaped into a tubular film tube, and then pulled, Cut open and flatten i...

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Abstract

The invention relates to the technical field of high-density polyethylene geomembranes, in particular to a high-temperature-resistant high-density polyethylene geomembrane and a preparation method thereof. The high-temperature-resistant high-density polyethylene geomembrane is prepared from the following raw materials in parts by mass: 40 to 70 parts of high-density polyethylene, 30 to 60 parts ofmedium-density polyethylene, 5 to 8 parts of antioxidant master batch and 5 to 8 parts of carbon black master batch. Various performance detection results of the high-temperature-resistant high-density polyethylene geomembrane prepared by the invention are all superior to GRI GM13 standard indexes; compared with the prior art, the high-density polyethylene geomembrane has excellent dimensional stability, the dimensional change rate is lower than + / -0.5% under the condition of 100 DEG C, the oxidation resistance is greatly improved, and the reliability and safety of engineering under the high-temperature condition are enhanced; the invention also provides the preparation method thereof.

Description

technical field [0001] The invention relates to the technical field of high-density polyethylene geomembrane, in particular to a high-temperature-resistant high-density polyethylene geomembrane and a preparation method thereof. Background technique [0002] High-density polyethylene (HDPE) geomembrane is a kind of high-grade waterproof material with extremely low permeability coefficient and good flexibility. It also has the advantages of strong deformation adaptability, strong strength, and easy overall connection construction. It is currently widely used in landfills. Fields, water conservancy, mine tailings treatment, petrochemical tank farms, high-speed railways, municipal engineering and other fields. However, in practical engineering applications, there are still some problems with high-density polyethylene geomembrane. [0003] Due to differences in raw materials, formulas, preparation processes, and technology, high-density polyethylene geomembranes generally have l...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K13/02C08K3/04C08K5/134C08K5/526C08J5/18B29C48/08B29C48/21B29C48/49B29C48/625
CPCB29C48/022B29C48/08B29C48/21B29C48/49B29C48/625C08J5/18C08J2323/06C08J2423/06C08K3/04C08K5/1345C08K5/526C08K13/02
Inventor 刘继明庄新段玲
Owner SHANDONG TIANHE PLASTIC
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