Preparation method of sensing warp-knitted polyester geogrid coated with conductive phase material
A warp-knitted polyester and geogrid technology, applied in the device, coating, fiber type and other directions of coating liquid on the surface, can solve the problems of inability to detect solid deformation information, increase the difficulty and cost of detection, and achieve savings. Cost of inspection and maintenance, convenience of quality inspection, effect of strengthening geotechnical structures
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[0026] A preparation method of a sensing type warp knitted polyester geogrid coated with conductive phase material includes the following steps:
[0027] Step 1 Select conductive phase solvents, additives and conductive phase materials according to construction conditions and market costs, and select relatively significant proportions in the percolation area as raw materials to prepare warp-knitted polyester geogrids.
[0028] Step 2 prepare conductive fiber coating liquid;
[0029] Step (2-1) prepare plastisol;
[0030] Step (2-2) preparing conductive phase material powder;
[0031] Step (2-3) dissolving the conductive phase material powder in the plastisol;
[0032] Step (2-4) grinding and dispersing;
[0033] Step (2-5) Add a good adhesive to effectively bond the coating material and the geosynthetic material;
[0034] Step (2-6) grinding uniformly;
[0035] The preparation process of the step (2-1) plastisol is as follows:
[0036] Take polyvinyl chloride resin as the main body, add plas...
example 1
[0046] In road engineering, the geogrid is mainly used to reinforce the soil and prevent settlement. In order to prepare the sensing type warp-knitted polyester geogrid suitable for roads, carbon black is used as the conductive phase material (the relation between resistivity and strain is Using PVC as the matrix, adding plasticizer dioctyl phthalate, heat stabilizer barium stearate and other additives, after melting and mixing to form a sensor-type conductive coating liquid, and then immersing the warp knitted polyester grid in In the coating liquid, the required road sensing type warp knitted polyester grid is formed. Laying this type of geogrid in the roadbed can not only reinforce the roadbed and prevent settlement, but also perform positioning detection and preventive maintenance through the resistance change after the force is deformed. This can save a lot of money and reduce Engineering volume.
example 2
[0048] In mine production operations, the stability and firmness of the roadway is the guarantee of safe production. In order to strengthen the roadway, the method of burying geonets is usually used, which not only improves the robustness of the roadway, but also reduces the construction cost. But even so, due to the effect of confining pressure and other factors, the roadway wall will still be deformed and destroyed, causing loss of life and property. If special equipment is used for regular inspection, it will be time-consuming and labor-intensive and inconvenient to operate. The above problems can now be solved by laying the sensor-type warp knitted polyester geonet. Using polyvinyl chloride resin as the matrix, melt-kneading carbon black powder as the conductive phase filler, and add plasticizers, heat stabilizers, dispersants, and adhesives to make coating materials, and immerse the warp knitted polyester grid into the The coating liquid is taken out and dried and solidifi...
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