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Thermoplastic polyolefin earthwork composite material and preparation method thereof

A technology of thermoplastic polyolefin and geotechnical composite materials, applied in chemical instruments and methods, synthetic resin layered products, lamination, etc., can solve the problem that anti-seepage materials cannot be used for long-term and direct exposure, and achieve UV aging resistance Excellent, high flexibility, elongation and excellent durability

Active Publication Date: 2017-06-27
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the existing anti-seepage materials cannot be directly exposed and applied in hydropower projects for a long time, and provides a new type of thermoplastic polyolefin geotechnical composite material for dam anti-seepage

Method used

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  • Thermoplastic polyolefin earthwork composite material and preparation method thereof
  • Thermoplastic polyolefin earthwork composite material and preparation method thereof
  • Thermoplastic polyolefin earthwork composite material and preparation method thereof

Examples

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Embodiment 1

[0033] This embodiment provides a thermoplastic polyolefin geocomposite, such as figure 1 As shown, it consists of a composite thermoplastic polyolefin layer and a geotextile layer.

[0034] Among them, the thickness of the thermoplastic polyolefin layer is 2.5mm, the width is 1m, and the weight of the geotextile layer is 100g / m 2 Non-woven polypropylene geotextile, the edge of the geotextile layer is reserved 5cm from the edge of the thermoplastic polyolefin layer as a lap edge.

[0035] The infrared absorption spectrogram of the thermoplastic polyolefin geotechnical composite material of the present embodiment is shown in figure 2 , the preparation method of the composite material is as follows:

[0036] Transport the thermoplastic polyolefin resin, calcium carbonate filler, antioxidant and light stabilizer to the feeding device of the screw extruder, and carry out melt extrusion at the temperature of 200-240°C and the screw speed of 200 rpm to obtain the extruded The su...

Embodiment 2

[0041] This embodiment provides a thermoplastic polyolefin geocomposite, such as image 3 As shown, it is a three-layer structure, from top to bottom: geotextile layer, thermoplastic polyolefin layer, geotextile layer.

[0042] Among them, the geotextile layer above the thermoplastic polyolefin layer is 500g / m 2 The non-woven needle-punched polyester geotextile, the geotextile layer below the thermoplastic polyolefin layer has a grammage of 800g / m 2 The woven polypropylene geotextile. The thickness of the thermoplastic polyolefin layer is 0.3mm, and the width is 2m; both ends of the geotextile layer are 10cm away from the edge of the thermoplastic polyolefin layer.

[0043] It should be noted that the material, structure, and weight of the two layers of geotextile above and below the thermoplastic polyolefin layer may be the same or different, and the specific conditions can be selected according to actual applications.

[0044] The preparation method of this composite materi...

Embodiment 3

[0050] This embodiment provides a thermoplastic polyolefin geotechnical composite material, which has a structure similar to that of the thermoplastic polyolefin geotechnical composite material in Example 1. The difference between it and Example 1 is that the thermoplastic polyolefin layer has a thickness of 3 mm and a width of 4 m. The weight of geotextile is 700g / m 2 A non-woven needle-punched polyester geotextile, and the edge of the geotextile layer is 10 cm away from the edge of the thermoplastic polyolefin layer as a lap edge.

[0051] The parts by weight of thermoplastic polyolefin resin, calcium carbonate filler, antioxidant and light stabilizer are: 80 parts, 15 parts, 3 parts, 3 parts, wherein the particle size of the filler is 2000 mesh. The weight of the non-woven needle-punched polyester geotextile is 800g / m 2 , screw speed 400 rev / min.

[0052] The infrared absorption spectrogram of the thermoplastic polyolefin geotechnical composite material of the present emb...

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Abstract

The invention provides a thermoplastic polyolefin earthwork composite material and a preparation method thereof and belongs to the technical field of water-power engineering. The thermoplastic polyolefin earthwork composite material is used for solving the problem that the present impermeable material cannot be applied to the water-power engineering for a long time. The thermoplastic polyolefin earthwork composite material includes a thermoplastic polyolefin layer and a geo-fabric layer which are compounded with each other. The composite material has high flexibility, extensibility and durability of rubbers and excellent fusing processing characteristics of thermoplastic plastics, contains no plasticizer, has excellent ultraviolet light aging resistance, high anti-puncturing strength, high anti-burst strength, high hydrostatic pressure resistance and excellent thermal welding performance, is capable of bearing water pressure impact 200m or above, can be directly exposed and applied to the newly constructed and repaired hydraulic and hydro-power engineering for preventing seepage, such as dams, reservoirs, embankments, cofferdams, water channels, tunnels and nuclear power plants, and has the service life as same as the service life of the constructions.

Description

technical field [0001] The invention belongs to the technical field of hydropower engineering, and in particular relates to a thermoplastic polyolefin geotechnical composite material and a preparation method thereof. Background technique [0002] In the field of hydropower engineering, the quality of anti-seepage of dams such as earth-rockfill dams, rockfill dams, and arch dams plays an important role in the structural stability and long-term operation benefits of hydropower projects. At present, the anti-seepage technology of high-thick concrete slab layer is mainly used for anti-seepage of hydropower project dam body in my country, and there are also composite anti-seepage structures of concrete face plate / geomembrane, but the existing composite anti-seepage structure is easy for concrete panels in base settlement and deformation engineering Cracks and leaks. [0003] According to my country's energy industry standard NB / T35027-2014 "Technical Specifications for Geomembran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/12B32B27/02B32B27/36B32B25/16B32B25/14B32B25/10B32B37/06B32B37/10B32B37/12
CPCB32B5/022B32B25/10B32B25/14B32B25/16B32B27/12B32B27/32B32B37/06B32B37/10B32B37/1284B32B2255/10B32B2262/0253B32B2262/0276B32B2307/50B32B2307/552B32B2307/558B32B2307/5825B32B2307/71B32B2307/7265B32B2307/734
Inventor 韩忠强段文锋楚跃先宗敦峰周建平田凤兰
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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