CN109736014B - Hexagonal FRP rib material mesh and manufacturing method thereof - Google Patents
Hexagonal FRP rib material mesh and manufacturing method thereof Download PDFInfo
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- CN109736014B CN109736014B CN201811650189.3A CN201811650189A CN109736014B CN 109736014 B CN109736014 B CN 109736014B CN 201811650189 A CN201811650189 A CN 201811650189A CN 109736014 B CN109736014 B CN 109736014B
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Abstract
The invention belongs to the technical field of meshes for buildings, and particularly relates to a hexagonal FRP rib mesh and a manufacturing method thereof; the manufacturing method comprises the following steps: the method comprises the following steps: plying the plurality of fiber yarns to form a fiber group; step two: soaking the fiber group in a resin solution, and integrating fiber bundles into the soaked fiber group through a round hole to form an FRP (fiber reinforced plastic) rib; step three: weaving a plurality of FRP rib materials to enable two adjacent FRP rib materials to be woven into a hexagonal grid to form an FRP rib material net; step four: and solidifying the FRP rib net, and shearing to obtain the hexagonal FRP rib net sheet. The hexagonal FRP rib material mesh prepared by the preparation method utilizes the characteristics of the fiber composite material to prepare the mesh instead of a metal material to prepare the mesh, can greatly prolong the service life of the material, is green, environment-friendly and pollution-free, and is particularly suitable for water conservancy, oceans, places with acid-base corrosion and places needing insulation, heat insulation and electromagnetic wave transmission.
Description
Technical Field
The invention belongs to the technical field of meshes for buildings, and particularly relates to a hexagonal FRP (fiber reinforced plastic) rib mesh and a manufacturing method thereof.
Background
The large-scale wire mesh used for engineering members is made into meshes with required sizes, and after the meshes are filled with stones, the meshes can be used for permanently protecting and supporting flood control and water conservancy facilities of seawalls and river and lake banks, or protecting and supporting sand dams, drainage channels, reservoirs, roads and bridges and other civil engineering. The net sheet can also be directly used for isolation fence nets of high-speed railways and expressways and fenders in grasslands, playgrounds, garden greenbelts, zoos, large-scale construction lands and other occasions.
Wire mesh sheets are widely used in such applications, and in particular wire mesh sheets of hexagonal configuration are preferred. Due to the special structure of the hexagonal metal net, the net piece has certain flexibility and deformability, so that the hexagonal metal net is widely applied to fence protecting nets, gabions for water conservancy and slope treatment and the like. For example, patent document No. 201187047Y discloses a novel hexagonal wire mesh.
The existing hexagonal metal mesh sheet generally uses galvanized and plastic-coated metal wires, is twisted and weaved by a machine to form, is simple and easy to produce, but has pollution in the metal galvanizing and plastic-coated processes, and galvanized and plastic-coated iron wires can not avoid the corrosion caused by the damage of outer zinc and plastic in the production and use processes, are particularly used in water conservancy, have general service life of three to five years according to statistics, and pollute water source due to the corrosion in the later period.
Disclosure of Invention
Based on the defects in the prior art, the invention provides a hexagonal FRP rib material mesh and a manufacturing method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a manufacturing method of a hexagonal FRP rib material mesh sheet comprises the following steps:
the method comprises the following steps: plying the plurality of fiber yarns to form a fiber group;
step two: soaking the fiber group in a resin solution, and integrating fiber bundles into the soaked fiber group through a round hole to form an FRP (fiber reinforced plastic) rib;
step three: weaving a plurality of FRP rib materials to enable two adjacent FRP rib materials to be woven into a hexagonal grid to form an FRP rib material net;
step four: and solidifying the FRP rib net, and shearing to obtain the hexagonal FRP rib net sheet.
Preferably, the two corresponding vertical edges of the hexagonal grid are both helical structures formed by mutually winding two FRP reinforcements and the other adjacent FRP reinforcement for several times.
Preferably, the second step further comprises: and winding and bundling the fiber bundles to form the FRP rib material.
Preferably, the second step further comprises: the FRP rib material is further subjected to one or more times of extrusion and scraping treatment to remove redundant resin solution on the surface of the FRP rib material.
Preferably, the extrusion and scraping treatment includes: extruding and scraping the FRP rib material through the extruding and scraping round hole of the silica gel piece; the diameter of the extruding and scraping round hole is smaller than that of the FRP rib material.
Preferably, the third step further comprises: the FRP reinforcement net is conveyed to the drying area through the template chain to be dried, the template chain is provided with a plurality of limiting blocks, and the limiting blocks are arranged at the extending ends of the vertical edges of each hexagonal grid to shape the FRP reinforcement net.
As the preferred scheme, the material of stopper is polytetrafluoroethylene, polyformaldehyde or hard silica gel.
Preferably, the multi-strand fiber yarn is one or more of glass fiber, carbon fiber, aramid fiber, basalt fiber and polyester fiber.
Preferably, the resin solution is a modified resin, and the matrix of the resin solution is a thermoplastic resin, a thermosetting resin or PVC.
The invention also provides a hexagonal FRP rib material mesh sheet prepared by the manufacturing method, the mesh sheet is provided with a plurality of grids, and two corresponding vertical side edges of the grids are both spiral structures formed by mutually winding two FRP rib materials for a plurality of times.
Compared with the prior art, the invention has the beneficial effects that:
the hexagonal FRP rib material mesh sheet disclosed by the invention is made of the fiber composite material instead of a metal material, can greatly prolong the service life of the material, is green, environment-friendly and pollution-free, and is particularly suitable for water conservancy, oceans, places with acid-base corrosion and places needing insulation, heat insulation and electromagnetic wave transmission.
The manufacturing method of the hexagonal FRP rib material mesh sheet has the advantages of simple process and convenience in manufacturing.
Drawings
FIG. 1 is a process flow chart of a method for manufacturing a hexagonal FRP rib mesh sheet according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a formwork chain in the method for manufacturing the hexagonal FRP rib mesh sheet according to the embodiment of the invention;
FIG. 3 is a schematic structural view of an iron plate of a template chain according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the arrangement positions of the limiting blocks on the iron plates of the template chain in the manufacturing method of the hexagonal FRP reinforcement mesh sheet according to the embodiment of the present invention;
fig. 5 is a schematic structural view of a hexagonal FRP reinforcement mesh sheet according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
In the application occasions based on the net sheets with the hexagonal structures, the net sheets are generally required to have certain stiffness, certain softness and plasticity, and certain deformability when the net sheets change along with the structures. So that the warp and weft structured mesh cannot be simply used; the hexagonal mesh is an unstable pattern, the fiber bundles are made of flexible materials and cannot be shaped, and templates are required to be fixed to be solidified in the production process. Therefore, the hexagonal net piece manufactured by fiber composite (FRP) reinforcements is developed, and through mechanical stranding and curing molding, the product has the characteristics of light weight, high strength, corrosion resistance, easiness in cutting, long service life and the like, has the softness and plasticity of a metal wire mesh, and can be fully suitable for manufacturing fence nets, water conservancy and side slope treatment gabions and the like.
As shown in fig. 1, the method for manufacturing a hexagonal FRP reinforcement mesh sheet according to the embodiment of the present invention includes the following process flows: doubling fiber yarns (multiple strands of fiber yarns are combined according to specific model specification requirements), soaking (the folded fibers are soaked through a resin groove), winding (the fiber bundles soaked with the resin are integrated into a bundle through a circular hole, and binding wires are wound outside the fiber bundles), twisting (each rib and adjacent ribs are twisted into a hexagonal grid), solidifying and shearing. Specifically, the method for manufacturing the hexagonal FRP rib mesh sheet provided by the embodiment of the invention comprises the following steps:
the method comprises the following steps: the multiple strands of fiber yarn are doubled to form fiber groups. The multi-strand fiber yarn is one or more of glass fiber, carbon fiber, aramid fiber, basalt fiber and polyester fiber.
Step two: soaking the fiber group in a resin solution, integrating the fiber group after soaking into a fiber bundle through a round hole, and winding and bundling the fiber bundle to form an FRP (fiber reinforced plastic) rib material; soaking fiber groups into a resin solution in a resin tank, wherein the soaking is a necessary step, and the reinforcement mesh is formed by mixing, curing and molding fiber materials and a cured substance (resin); the soaking of the embodiment of the invention is to put the fiber into the resin solution for soaking, so that the surface of the fiber is attached with the resin, and then the fiber is dried, bonded and solidified into a desired shape; the fibers themselves are combined together in a filament-like manner and are dispersed soft materials. The resin solution in the resin tank is selected to be prepared into semi-flexible modified resin, and the matrix of the resin solution is thermoplastic resin, thermosetting resin or PVC; after the fiber group is soaked in the resin, a plurality of extruding and scraping processes are needed, and the glue amount on the outer surface of the FRP rib is controlled, so that the twisting point of the finished rib has certain loosening capacity. Specifically, the extruding and scraping is a process of extruding and scraping redundant resin glue solution after fibers are placed into the resin glue solution for soaking; because the resin is a paste with high viscosity, the fiber is fully soaked and taken up to bring excessive resin glue solution, and the excessive resin glue solution is required to be squeezed and scraped; the hexagonal FRP rib material mesh manufactured by the implementation of the invention needs certain mobility and plasticity, so the resin glue solution on the surface of the fiber bundle must be squeezed and scraped as much as possible, otherwise, the twisted positions of the two dried rib materials are firmly bonded and cannot be loosened; the drying and curing are performed by resin glue solution. Preferably, the embodiment of the invention designs a secondary extrusion and scraping process, and generally, the rib material is extruded and scraped once when being produced, namely, the winding is as follows: the fiber bundles soaked with the resin are integrated into one bundle through the round holes, and a squeezing and scraping process is performed when a binding wire is wound outside the fiber bundles; after the wire winding is scraped to the extrusion for the first time, add a silica gel spare that has certain hardness again, the silica gel spare has the crowded round hole of scraping, and the silica gel spare has following advantage: firstly, the rubber is not bonded with resin, and secondly, the rubber has certain elasticity; the diameter of the extrusion scraping round hole is slightly smaller than that of the FRP rib material, so that the extrusion scraping process is realized when the FRP rib material passes through. In addition, the fiber bundle coming out of the round hole is bound by winding a yarn, so that the FRP rib material is not cracked when being dried.
Step three: weaving a plurality of FRP rib materials to enable two adjacent FRP rib materials to be woven into a hexagonal grid to form an FRP rib material net; specifically, as shown in fig. 2 to 4, two corresponding vertical edges 11 and 12 of the hexagonal grid 1 are both helical structures formed by mutually winding two FRP reinforcements and another adjacent FRP reinforcement for several times; the FRP reinforcement net is conveyed to a drying area through a template chain for solidification, the template chain is provided with a plurality of limiting blocks 2, and the limiting blocks 2 are arranged at the expansion ends of the vertical edges of each hexagonal grid so as to shape the FRP reinforcement net; wherein, the expansion end is one end that two FRP muscle materials of intertwine are separated each other. The limiting block is made of polytetrafluoroethylene, polyformaldehyde or hard silica gel and other materials so as to ensure that the limiting block is not adhered to the FRP rib net and can bear the high temperature in the drying process. Specifically, the template chain is composed of two transmission roller chains on two sides, a plurality of iron plates 3 are arranged on the two transmission roller chains in parallel, polytetrafluoroethylene limiting blocks 2 are arranged on the iron plates, the chains and the iron plates are used for driving the iron plates to move forwards under the driving of a motor so as to drive the polytetrafluoroethylene limiting blocks on the iron plates to move forwards, and the polytetrafluoroethylene is used for hooking the meshes to move forwards and keeping the specified specification and size so that the meshes are not deformed. As a preferred embodiment, as shown in fig. 3, two longitudinal long holes can be respectively opened at two ends of the iron plate, and a long hole is opened at the middle part of the iron plate, wherein the long holes are used for adjusting according to the size when manufacturing meshes with different meshes, and the iron plate can be adjusted to move longitudinally and the polytetrafluoroethylene block can be adjusted to move transversely according to the process when producing meshes with different sizes. In addition, the specific process of twisting can refer to the twisting process of metal wires in the prior art, which is not described in detail herein.
Step four: and solidifying the FRP rib net, and shearing to obtain the hexagonal FRP rib net sheet. Wherein, the shearing is because the product comes out continuously, cuts the finished product according to different specification sizes, cuts and need not fix, because this has certain flexibility, still has fairly stiff after drying solidification, and two muscle materials are together to have the pine but can't draw open. If the flexible mesh sheet is made, two ribs on the edge can be fully combined with adjacent ribs when being twisted without secondary extrusion and glue scraping.
The embodiment of the invention also provides a hexagonal FRP rib mesh sheet prepared by the manufacturing method, as shown in FIG. 3, the mesh sheet is provided with a plurality of grids 1, and two corresponding vertical side edges 11 and 12 of the grids 1 are both spiral structures formed by mutually winding two FRP ribs for a plurality of times.
The hexagonal FRP rib material mesh has the advantages that:
1. the fiber composite mesh sheet is light in weight, and the density of the fiber composite material used by the fiber composite mesh sheet is 1.9-2.3, which is far lower than that of steel material, namely 7.8.
2. The strength is large: the strength (600-1500Kpa) of the fiber composite rib with the same diameter is far greater than that (300-500Kpa) of steel.
3. Corrosion resistance: the fiber composite net has good acid and alkali resistance and weather resistance.
4. And the maintenance is free. Maintenance is not needed at the later stage (except for artificial factor damage).
5. Green and environmental protection without pollution: the fiber composite net has no pollution to the environment during the production process and after use.
6. The insulating, heat-insulating and electromagnetic wave-transmitting device can be used in special occasions such as the occasions needing insulation, heat insulation and electromagnetic wave transmission, such as medical nuclear magnetic resonance equipment of a geomagnetic observation station of a radar station.
The manufacturing method of the hexagonal FRP rib material mesh sheet has the advantages of simple process and convenience in manufacturing.
As another embodiment, when manufacturing a small-sized mesh sheet, the winding may not be performed, that is, the binding wire may not be wound on the outer surface of the fiber bundle.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (10)
1. The manufacturing method of the hexagonal FRP rib material mesh is characterized by comprising the following steps:
the method comprises the following steps: plying the plurality of fiber yarns to form a fiber group;
step two: soaking the fiber group in a resin solution, and integrating fiber bundles into the soaked fiber group through a round hole to form an FRP (fiber reinforced plastic) rib;
step three: weaving a plurality of FRP rib materials to enable two adjacent FRP rib materials to be woven into a hexagonal grid to form an FRP rib material net;
step four: and solidifying the FRP rib net, and shearing to obtain the hexagonal FRP rib net sheet.
2. The method as claimed in claim 1, wherein the two corresponding vertical edges of the hexagonal grid are both helical structures formed by winding the two FRP ribs with the other adjacent FRP ribs for several times.
3. The method for manufacturing the hexagonal FRP rib mesh sheet according to claim 1, wherein the second step further comprises: and winding and bundling the fiber bundles to form the FRP rib material.
4. The method for manufacturing the hexagonal FRP rib mesh sheet according to claim 1, wherein the second step further comprises: the FRP rib material is further subjected to one or more times of extrusion and scraping treatment to remove redundant resin solution on the surface of the FRP rib material.
5. The method for manufacturing the hexagonal FRP rib mesh sheet according to claim 4, wherein the extrusion and scraping treatment comprises: extruding and scraping the FRP rib material through the extruding and scraping round hole of the silica gel piece; the diameter of the extruding and scraping round hole is smaller than that of the FRP rib material.
6. The method for manufacturing the hexagonal FRP rib mesh sheet according to any one of claims 1 to 5, wherein the third step further comprises: the FRP reinforcement net is conveyed to the drying area through the template chain to be dried, the template chain is provided with a plurality of limiting blocks, and the limiting blocks are arranged at the extending ends of the vertical edges of each hexagonal grid to shape the FRP reinforcement net.
7. The method for manufacturing the hexagonal FRP rib mesh sheet according to claim 6, wherein the material of the limiting block is polytetrafluoroethylene, polyformaldehyde or hard silica gel.
8. The method for manufacturing the hexagonal FRP rib mesh sheet according to any one of claims 1 to 5, wherein the plurality of fiber yarns are one or more of glass fibers, carbon fibers, aramid fibers, basalt fibers and polyester fibers.
9. The method for manufacturing a hexagonal FRP rib sheet according to any one of claims 1 to 5, wherein the resin solution is a modified resin, and the matrix of the resin solution is a thermoplastic resin or a thermosetting resin.
10. The hexagonal FRP rib sheet manufactured by the manufacturing method of any one of claims 2 to 9, wherein the sheet has a plurality of grids, and two corresponding vertical side edges of each grid are helical structures formed by winding two FRP ribs for a plurality of times.
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| CN201187047Y (en) * | 2008-03-27 | 2009-01-28 | 张锡堂 | Novel hexagonal metal gauze |
| CN202767025U (en) * | 2011-12-22 | 2013-03-06 | 张绍华 | A low-carbon aluminum-clad-steel-wire reinforced shore-fixing cage |
| CN204804457U (en) * | 2015-06-17 | 2015-11-25 | 宁波久鼎特种单丝有限公司 | Plastic steel check guest web frame |
| CN207597288U (en) * | 2017-06-30 | 2018-07-10 | 四川方成铁建建设工程有限公司 | A kind of reinforcement curtain guides protection network |
| CN108859169B (en) * | 2018-06-21 | 2021-04-20 | 凌乐波 | FRP mesh and manufacturing method thereof |
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