Micro-nano multilayer polymer geomembrane as well as preparation method and device thereof

A micro-nano multi-layer, polymer technology, applied in the field of polymer materials, can solve the problems of geomembrane puncture, polymer geomembrane anti-seepage, decline in leak-proof performance, harsh environment for polymer geomembrane, etc. Low cost, suitable for industrial production, excellent puncture resistance

Inactive Publication Date: 2014-07-02
GUIZHOU MATERIAL IND TECH INSTITUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use environment of polymer geomembrane is very harsh. Usually, many sharp rocks or other hard objects will be encountered during use, which will easily pierce the geomembrane, which will greatly reduce the anti-seepage and anti-leakage performance of polymer geomembrane.

Method used

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  • Micro-nano multilayer polymer geomembrane as well as preparation method and device thereof
  • Micro-nano multilayer polymer geomembrane as well as preparation method and device thereof
  • Micro-nano multilayer polymer geomembrane as well as preparation method and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1 of the present invention: Micro-nano multi-layer polymer geomembrane, calculated by weight, includes 80 parts of polyethylene, 23 parts of calcium carbonate and 2 parts of polyethylene grafted maleic anhydride.

[0018] The preparation method of the micro-nano multi-layer polymer geomembrane, according to the above weight parts, firstly mix the calcium carbonate and the modifying agent, and then obtain the modified calcium carbonate and the modified calcium carbonate after stirring; then the modified calcium carbonate and the polyethylene Add it to a special polymer micro-nano lamination co-extrusion device for blending and extrusion to obtain alternating PE layers 8 and PE / CaCO 3 Finished layer 9; PE layer 8 or PE / CaCO 3 Layer 9 has a monolayer thickness of 50 nm.

[0019] The special polymer micro-nano layered co-extrusion device includes a four-layer distributor 4, and the left single-screw extruder 1 and the right single-screw extruder 2 are respective...

Embodiment 2

[0020] Embodiment 2 of the present invention: Micro-nano multi-layer polymer geomembrane, calculated in parts by weight, includes 83 parts of polyethylene, 15 parts of inorganic filler and 2 parts of polyethylene grafted glycidyl methacrylate; the inorganic filler is High quality calcium carbonate and talcum powder are compounded.

[0021] The preparation method is the same as in Example 1 to obtain alternating PE layers 8 and PE / CaCO 3 / Finished product of talc layer 9; PE layer 8 or PE / CaCO 3 / The thickness of a single layer of the talc layer 9 is 200 nm.

[0022] The device that adopts is with embodiment 1.

Embodiment 3

[0023] Example 3 of the present invention: micro-nano multi-layer polymer geomembrane, calculated by weight, including 80 parts of EVA, 23 parts of montmorillonite and 2 parts of polyethylene grafted glycidyl methacrylate.

[0024] The preparation method is the same as that in Example 1, and the finished product of alternating EVA layer 8 and EVA / montmorillonite layer 9 is obtained; the single-layer thickness of EVA layer 8 or EVA / montmorillonite layer 9 is 150 nm.

[0025] The device that adopts is with embodiment 1.

[0026] In order to verify the effect of the present invention, the main mechanical properties of the single-layer and 1024-layer multilayer geomembranes of the products prepared in the above three examples are tested, and the tensile properties are tested according to the national standard GB / T 1040.3-2006, The puncture performance is tested according to ASTM D4833-2007. The results are shown in Table 1.

[0027]

[0028] According to the results of Table ...

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Abstract

The invention discloses a micro-nano multilayer polymer geomembrane as well as a preparation method and device thereof. The micro-nano multilayer polymer geomembrane, in parts by weight, comprises 60-95 parts of polymers, 4-40 parts of inorganic filler and 1-10 parts of a modifier. According to the invention, the formula and preparation process of products are preferred, and a prepared multilayer polymer geomembrane is high in tensile strength, high in elongation at break, excellent in penetration resistance, and excellent in barrier property, and compared with existing products, the micro-nano multilayer polymer geomembrane is lower in cost, and green and environment-friendly in the production process, and can achieve continuous production. The preparation method disclosed by the invention is simple in process and easy to operate, therefore, the preparation method is extremely suitable for industrial production.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a micro-nano multilayer polymer geomembrane and a preparation method and device thereof. Background technique [0002] Polymer geomembranes are widely used in anti-seepage and anti-leakage of various facilities or buildings such as tunnels, landfills, mine tail dams, coastal tidal flats, civil buildings, water conservancy and hydropower, power plants, environmental protection facilities, and municipal facilities. With the development of transportation and people's increasing emphasis on environmental protection, the amount of polymer geomembrane is also increasing. [0003] At present, polymer geomembranes are prepared by extrusion of polymer materials such as polyethylene, polypropylene, ethylene vinyl acetate copolymer (EVA), ethylene-propylene copolymer (EPDM), and most of them are single-layer, two-layer, or three-layer. There are few multilayer polymer geomembranes with mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K9/04C08K3/26C08K3/34B29C47/06
CPCC08K9/08B29C48/18C08J5/18C08J2323/06C08J2323/08C08K3/26C08K3/34C08K3/346C08K2003/265C08L2203/16C08L23/06C08L23/0853
Inventor 韦良强孙静秦舒浩
Owner GUIZHOU MATERIAL IND TECH INSTITUE
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