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Preparation method for sensing type warp knitting dacron geogrid coated with conductive phase material

A technology of warp-knitted polyester and geogrid is applied to the device, coating, fiber type and other directions of coating liquid on the surface. Cost of inspection and maintenance, convenience of quality inspection, effect of strengthening geotechnical structures

Active Publication Date: 2015-02-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current grille products are only a single reinforced structure, and it is impossible to detect the deformation information of the reinforced body. If it is detected, other equipment is required, which increases the difficulty and cost of detection.

Method used

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  • Preparation method for sensing type warp knitting dacron geogrid coated with conductive phase material

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preparation example Construction

[0026] A method for preparing a sensor-type warp-knitted polyester geogrid coated with a conductive phase material, comprising the following steps:

[0027] Step 1 Select conductive phase solvents, additives and conductive phase materials according to construction conditions and market costs, and select a relatively significant ratio in the percolation area as raw materials for the preparation of warp-knitted polyester geogrid.

[0028] Step 2 prepares conductive fiber coating solution;

[0029] Step (2-1) prepares plastisol;

[0030] Step (2-2) prepares conductive phase material powder;

[0031] Step (2-3) dissolving the powder of the conductive phase material in the plastisol;

[0032] Step (2-4) grinding and dispersing;

[0033] Step (2-5) adding a good adhesive to effectively bond the coating material and the geosynthetic material;

[0034] Step (2-6) grinds evenly;

[0035] The preparation process of described step (2-1) plastisol is as follows:

[0036] Taking poly...

example 1

[0046] In road engineering, geogrids are mainly used to reinforce soil and prevent settlement. In order to prepare the sensor-type warp-knitted polyester geogrid suitable for roads, carbon black will be used as the conductive phase material (the relationship between resistivity and strain is Taking PVC as the matrix, adding plasticizer dioctyl phthalate, heat stabilizer barium stearate and other additives, melting and kneading to form a sensor-type conductive coating solution, and then dipping the warp-knitted polyester grid in In the coating solution, the required road-sensing warp-knitted polyester grid is formed. Laying this type of geogrid in the subgrade can not only strengthen the subgrade and prevent settlement, but also perform positioning detection and preventive maintenance through the resistance value change after stress deformation, which can save a lot of money and reduce Work volume.

example 2

[0048] During mine production operations, the stability and firmness of the roadway is the guarantee of safe production. To reinforce the roadway, geonets are usually buried, which not only improves the robustness of the roadway, but also reduces construction costs. But even so, due to the effect of confining pressure and other factors, the roadway wall will still be deformed and damaged, resulting in loss of life and property. If special equipment is used for regular inspection, it will be time-consuming, laborious and inconvenient to operate. The above problems can be solved by laying sensor-type warp-knitted polyester geonet. Use polyvinyl chloride resin as the matrix, melt and knead carbon black powder as the conductive phase filler, add plasticizer, heat stabilizer, dispersant, and adhesive to make the coating material, and immerse the warp-knitted polyester grid into the In the coating solution, take it out and wait for it to air-dry and solidify to form a sensory warp-k...

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Abstract

The invention discloses a preparation method for a sensing type warp knitting dacron geogrid coated with a conductive phase material. The preparation method comprises the following steps: 1) selecting a conductive phase solvent, an additive and the conductive phase material according to a construction condition and market cost and selecting relative obvious proportions in a percolation area as raw materials for preparing the warp knitting dacron geogrid; 2) preparing a conductive fiber coating solution; 3) soaking the warp knitting dacron geogrid into the conductive fiber coating solution, taking out after fully wetting, air-drying and solidifying at normal temperature, and forming a conductive phase coating solution layer, thereby realizing the preparation for the sensing type warp knitting dacron geogrid; 4) calibrating the relation between the geogrid deformation and the resistance change. According to the invention, a conductive coating material formed through fusing carbon black by taking PVC (polyvinyl chloride) as a substrate coats the formed dacron geogrid, the pulling sensitiveness of a conductive layer coats the flat surface of an end product is utilized to reflect the required information, such as deformation, and the phenomena of reduction of rib strength and performance caused by the implanting of an external sensor are avoided.

Description

technical field [0001] The invention provides a method for preparing a sensory warp-knitted polyester geogrid coated with a conductive phase material, which belongs to the field of civil engineering. Background technique [0002] In recent years, geotechnical materials synthesized from polymers have been widely used in road and water conservancy projects because of their high strength, corrosion resistance, flexibility, and ease of construction. Among them, warp-knitted polyester geogrid is a new generation product of high-strength geogrid, and its strength per unit area has been improved by leaps and bounds compared with ordinary plastic grids. However, the current grid products only have a single reinforced structure, and the deformation information of the reinforced body cannot be detected. If it is detected, other equipment needs to be used, which increases the difficulty and cost of detection. Contents of the invention [0003] In order to solve the defects existing ...

Claims

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Application Information

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IPC IPC(8): E02D3/00E02D1/00D06M15/248D06M11/74D06M101/32
CPCB05C3/12B05C3/125B05D3/04D06M11/74D06M15/248D06M2101/32E02D3/005E02D2250/00E02D2300/0084
Inventor 崔新壮张炯汤潍泽楼俊杰侯飞黄丹
Owner SHANDONG UNIV
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