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High-strength geogrid and its preparation method

A geogrid and high-strength technology, applied in the field of high-strength geogrid and its preparation, can solve the problems of aging, damage and deformation of the geogrid, and achieve the effects of delaying aging, improving flexibility and promoting anti-oxidation.

Active Publication Date: 2018-06-05
天鸿建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned grids and most of the grids in the prior art need to be filled within 48 hours after laying, otherwise the geogrids will be aged, deformed and damaged by ultraviolet radiation after being exposed to the sun.

Method used

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  • High-strength geogrid and its preparation method
  • High-strength geogrid and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) 20 parts of nano-calcium carbonate and 1 part of carbon nanotubes are dried in an oven at 100°C;

[0043] (2) Weigh 80 parts of PE, 20 parts of phenolic resin, 10 parts of EPDM rubber, 15 parts of styrene-butadiene rubber, 20 parts of nano-calcium carbonate, and 1 part of carbon nanotubes into a high-speed mixer, and mix at high speed for 10 minutes; Then add 5 parts of 2-hydroxy-4-n-octyloxybenzophenone, 1 part of diphenylamine, 1 part of diisooctyl phthalate and 1 part of crosslinking agent into the high-speed mixer, and mix at high speed for 20 minutes;

[0044] (3) Put the above blend into an extruder for melt extrusion, the temperature of the barrel of the extruder is 192° C., and the rotating speed of the screw of the extruder is 180 r / min;

[0045] (4) The above-mentioned melt is formed into a sheet through a three-roll calender, and then punched with a die by a punching machine, heated to 82° C. through an orifice plate, and then stretched.

Embodiment 2

[0047] (1) 25 parts of nano-silica, 1.2 parts of carbon nanotubes, and 5 parts of carbon fiber are dried in an oven at 100 ° C;

[0048] (2) Weigh 77 parts of PP, 23 parts of phenolic resin, 12 parts of EPDM rubber, 12 parts of styrene-butadiene rubber, 25 parts of nano-silica, 1.2 parts of carbon nanotubes and 5 parts of carbon fiber and add them to the high-speed mixer , mixed at high speed for 10 minutes; then added 6 parts of o-hydroxybenzotriazole, 2 parts of p-phenylenediamine, 1.5 parts of diisooctyl phthalate and 1 part of crosslinking agent to the high-speed mixer, and mixed at high speed for 20 minutes;

[0049] (3) Put the above blend into an extruder for melt extrusion, the temperature of the barrel of the extruder is 192° C., and the rotating speed of the screw of the extruder is 180 r / min;

[0050] (4) The above-mentioned melt is formed into a sheet through a three-roll calender, and then punched with a die by a punching machine, heated to 82° C. through an orifi...

Embodiment 3

[0052] (1) 30 parts of talcum powder, 1.5 parts of carbon nanotubes, and 10 parts of glass fiber are dried in an oven at 100 ° C;

[0053] (2) Take by weighing 75 parts of PVC, 25 parts of phenolic resin, 15 parts of EPDM rubber, 10 parts of styrene-butadiene rubber, 30 parts of talcum powder, 1.5 parts of carbon nanotubes and 10 parts of glass fiber and join in the high-speed mixer, Mix at high speed for 10 minutes; then add 7 parts of 4-tert-butylphenyl salicylate, 3 parts of diphenylamine, 2 parts of diisooctyl phthalate and 1 part of crosslinking agent to the high-speed mixer, and mix at high speed for 20 minutes ;

[0054] (3) Put the above blend into an extruder for melt extrusion, the temperature of the barrel of the extruder is 192° C., and the rotating speed of the screw of the extruder is 180 r / min;

[0055] (4) The above-mentioned melt is formed into a sheet through a three-roll calender, and then punched with a die by a punching machine, heated to 82° C. through a...

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Abstract

The invention discloses a high-strength geogrid. The high-strength geogrid is prepared from, by weight, 100 parts of matrix resin, 20-30 parts of thermoplastic elastomer, 20-40 parts of reinforcing filler, 5-10 parts of a light stabilizer, 1-5 parts of an antioxidant, 1-3 parts of phthalate plasticizer and 1-3 parts of a crosslinking agent. The high-strength geogrid is excellent in light radiation resistance, tensile strength retention rate is about 98% after 84h light irradiation, ageing of the geogrid is remarkably decelerated, and deformation and damage of the geogrid are reduced.

Description

technical field [0001] The invention relates to a geogrid, in particular to a high-strength geogrid and a preparation method thereof. Background technique [0002] With the rapid development of my country's construction industry, geogrids are used in road construction to be laid in civil engineering. Grid-shaped or three-dimensional grid screen grid with a certain height, geogrid can be used as a high-strength reinforced geotechnical belt, which can effectively improve the interlocking and occlusion of the reinforced bearing surface, and greatly enhance the bearing capacity of the foundation , Effectively restrict the lateral displacement of the soil and enhance the stability of the foundation. [0003] Geogrids are divided into plastic geogrids, which are made by punching holes in extruded polymer sheets, and then directional stretched under heating conditions; steel-plastic geogrids are made of high-strength steel wire and polyethylene, And add other additives, make it int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L61/06C08L23/16C08L9/06C08L23/12C08L27/06C08L51/04C08K13/04C08K7/00C08K3/04C08K3/26C08K5/12C08K7/06C08K3/36C08K7/14C08K3/34
CPCC08K2201/005C08K2201/011C08L23/06C08L23/12C08L25/06C08L27/06C08L2201/08C08L2205/035
Inventor 施建华杨增光王国表袁东恩吴虎
Owner 天鸿建设集团有限公司
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