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A kind of thermoplastic polyolefin geotechnical 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, coatings, 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: 2021-01-26
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of thermoplastic polyolefin geotechnical composite material and preparation method thereof
  • A kind of thermoplastic polyolefin geotechnical composite material and preparation method thereof
  • A kind of thermoplastic polyolefin geotechnical 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 geotechnical composite material and a preparation method thereof, which belong to the technical field of hydropower engineering and can solve the problem that existing anti-seepage materials cannot be used in hydropower engineering for a long time. The thermoplastic polyolefin geotechnical composite material of the present invention includes a composite thermoplastic polyolefin layer and a geotextile layer, and the composite material has both the high flexibility, extensibility and durability of rubber and the excellent melt processing characteristics of thermoplastics, and the composite material It does not contain any plasticizers, it has excellent UV aging resistance, high puncture resistance, high burst strength, high hydrostatic pressure resistance, excellent thermal welding performance, and can withstand water pressure impact of more than 200m. It can be directly exposed Applied to dams, reservoirs, embankments, cofferdams, canals, tunnels, nuclear power plants and other new and repaired hydropower and water conservancy projects for anti-seepage, and the application life is the same as that of buildings.

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 Patents(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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