CN211664986U - Surface enhanced resin-based composite material reinforcing rib - Google Patents
Surface enhanced resin-based composite material reinforcing rib Download PDFInfo
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- CN211664986U CN211664986U CN201820105070.7U CN201820105070U CN211664986U CN 211664986 U CN211664986 U CN 211664986U CN 201820105070 U CN201820105070 U CN 201820105070U CN 211664986 U CN211664986 U CN 211664986U
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Abstract
The utility model discloses a surface enhancement mode resin base combined material strengthening rib belongs to combined material building reinforcing field. The surface-enhanced resin-based composite material reinforcing rib comprises an internal reinforced fiber resin-based composite material, an external winding layer and an outermost layer of reinforced particles, wherein the reinforced fibers are formed for the first time through a pultrusion process after being used for impregnating a resin matrix, then the pultruded composite material is wound for the second layer of impregnating resin matrix, and finally the surface-enhanced particles are covered in a semi-cured state for re-curing and forming. The utility model discloses not only have the advantage of current combined material strengthening rib, still have simultaneously with the base material cohesion more strong, strengthen outstanding characteristics such as the effect is better.
Description
Technical Field
The utility model relates to a combined material building reinforcing field especially indicates a surface enhancement mode resin base combined material strengthening rib.
Background
The reinforcing steel bar has been used as a reinforcing steel bar in the field of buildings for many years, has the advantages of easily available raw materials, low price and the like, but the reinforcing steel bar has limited strength, is easy to corrode in a humid environment, has heavier weight and is inconvenient to carry, so the composite material reinforcing steel bar has come into operation in recent years. Compared with the traditional reinforcing steel bar, the composite material reinforcing steel bar has the advantages of high strength, corrosion resistance, light weight and the like, and is popularized and used at present.
The existing composite material reinforcing rib is prepared by reinforcing fiber and resin matrix through pultrusion winding process, and has smooth surface. The composite material reinforcing rib realizes the fastening connection with a base material such as concrete and the like through a surface thread structure. However, the composite material reinforcing bar has smooth surface, weak bonding force with concrete and limited reinforcing effect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a surface enhancement mode resin matrix combined material strengthening rib not only has the advantage of current combined material strengthening rib, still has simultaneously with base material cohesion more strong, reinforcing effect outstanding characteristics such as better.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
in one aspect, the utility model provides a surface enhancement mode resin matrix combined material strengthening rib, including inside reinforcing fiber resin matrix combined material, outer winding layer and outmost reinforcing particle, reinforcing fiber carries out first time shaping for impregnating resin base member after through pultrusion process, later twines the second floor impregnating resin base member at pultruded combined material skin, covers surface enhancement granule under the semi-solid state at last, carries out curing molding once more.
Further, the fiber is one or more of carbon fiber, glass fiber, basalt fiber, aramid fiber, polyethylene fiber and silicon carbide fiber.
Further, the resin matrix comprises a thermosetting resin system and/or a thermoplastic resin system, wherein:
the thermosetting resin system is one or more of an epoxy resin system, a phenolic resin system and a vinyl resin system;
the thermoplastic resin system is one or more of polypropylene, nylon, thermoplastic polyester resin, polyphenylene sulfide resin and polyether ether ketone resin.
Further, the reinforcing particles comprise one or more of sand, silica, glass beads, barium sulfate and kaolin.
On the other hand, the utility model also provides a preparation method of foretell surface enhancement mode resin base combined material strengthening rib, include:
step 1: arranging the internal reinforced fibers on a creel, then impregnating the internal reinforced fibers with a resin matrix through a glue dipping tank, and precuring the internal reinforced fibers through a precuring box;
step 2: winding fibers of the resin matrix dipped by the glue adding device are wound on the internal composite material under the driving of the winding unit;
and step 3: and (4) entering a reinforced particle groove, attaching reinforced particles to the outermost layer, and then entering a curing box together for curing and molding.
Further, in the step 1, the degree of precuring is 60% or less.
Further, if the resin matrix in the step 1 is in a solid state, the dip tank is a closed type heated and pressurized glue injection type dip tank, and if the resin matrix in the step 1 is a thermosetting resin system, the precuring box needs to be heated.
Further, in the step 2, after winding, the steel wire is put into a heat treatment box for heat treatment.
Furthermore, in the step 3, the specific manner of adhering the reinforcing particles to the outermost layer is that the semi-cured composite material enters the groove filled with the reinforcing particles, and a vibration device is arranged at the bottom of the groove filled with the reinforcing particles, so that the reinforcing particles are uniformly adhered to the outer layer of the composite material.
The utility model discloses following beneficial effect has:
the utility model discloses surface enhancement mode resin matrix combined material strengthening rib, surface enhancement mode combined material strengthening rib adopt the reinforcing of surface particles thing, and frictional force increases greatly, and more inseparabler that can combine with the concrete. Use the utility model discloses the combined material strengthening rib of preparation, surface have reinforcing granule, and base material, especially the most commonly used concrete compatibility is better, and surface roughness strengthens greatly moreover, when using as the strengthening rib, also will improve greatly with base material's interface cohesion. Therefore the utility model discloses a combined material strengthening rib has the advantage of current combined material strengthening rib, still has simultaneously with base material cohesion more strong, the reinforcing effect outstanding characteristics such as better.
Drawings
FIG. 1 is a schematic structural view of a surface-enhanced resin-based composite material reinforcing rib of the present invention;
FIG. 2 is a schematic view of the preparation method of the surface-enhanced resin matrix composite material reinforcing rib of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
On the one hand, the utility model provides a surface enhancement mode resin matrix combined material strengthening rib, as shown in fig. 1 and fig. 2, including inside reinforcing fiber resin matrix combined material 1, outer winding layer 2 and outmost reinforcing particle 3, reinforcing fiber carries out the primary importance through pultrusion process after for the impregnated resin base member, later twines the second floor impregnated resin base member at pultruded combined material skin, covers surface reinforcing particle under the semi-solid state at last, carries out curing moulding once more.
The utility model discloses surface enhancement mode resin matrix combined material strengthening rib, surface enhancement mode combined material strengthening rib adopt the reinforcing of surface particles thing, and frictional force increases greatly, and more inseparabler that can combine with the concrete. Use the utility model discloses the combined material strengthening rib of preparation, surface have reinforcing granule, and base material, especially the most commonly used concrete compatibility is better, and surface roughness strengthens greatly moreover, when using as the strengthening rib, also will improve greatly with base material's interface cohesion. Therefore the utility model discloses a combined material strengthening rib has the advantage of current combined material strengthening rib, still has simultaneously with base material cohesion more strong, the reinforcing effect outstanding characteristics such as better.
The utility model discloses a reinforcing fiber and resin matrix cover the surface reinforcing granule at the semi-solid state through pultrusion, the first one shot forming of winding technology, then carry out the postcure shaping. Firstly, the well arranged reinforced fibers are preheated and preformed through a curing mould of a pultrusion production line, and the fiber reinforced composite material coming out of a curing mould opening is not completely cured but is a semi-cured composite material with the curing degree below 60 percent; secondly, winding the impregnated reinforced fibers on the semi-cured composite material core rod, wherein the reinforced fibers and the resin matrix used in the winding step can be the same as or different from those used in the pultrusion step; the composite material after pultrusion and winding continues to advance under the traction of the traction machine, at the moment, the composite material can be subjected to heating treatment, the heating treatment has the advantages that the reinforcing fiber wound on the outer layer can be preliminarily cured, the composite material has certain strength, and if the fiber wound on the outer layer is tight, the composite material can keep the shape under the action of the tensioning force, and the composite material can be free of heating treatment. The composite material after pultrusion winding passes through the reinforced particle groove, reinforced particles are arranged in the reinforced particle groove, and the bottom of the reinforced particle groove is provided with the vibration device, so that the surface of the composite material can be uniformly stained with the reinforced particles. The outer layer of the composite material is stained with reinforced particles through the reinforced particle groove, and then the reinforced particles enter a curing box together for curing and forming.
Preferably, the fiber can be one or more of organic fiber and/or inorganic fiber such as carbon fiber, glass fiber, basalt fiber, aramid fiber, polyethylene fiber, silicon carbide fiber and the like, and can include but is not limited to the above fibers.
Further, the resin matrix may include one or more of a thermosetting resin system such as an epoxy resin system, a phenolic resin system, a vinyl resin system, and the like, and/or a thermoplastic resin system such as polypropylene, nylon, a thermoplastic polyester resin, a polyphenylene sulfide resin, a polyether ether ketone resin, and the like, and may include, but is not limited to, the above resins.
As an improvement of the present invention, the reinforcing particles may include one or more of sand, silica, glass beads, barium sulfate, kaolin, and other particulate matter, and may include but not limited to the above reinforcing particles.
On the other hand, the utility model also provides a preparation method of foretell surface enhancement mode resin base combined material strengthening rib, include:
step 1: arranging the internal reinforced fibers 10 on a creel 1, then impregnating the internal reinforced fibers with a resin matrix through a glue dipping tank 2, and precuring the internal reinforced fibers through a precuring box 3;
step 2: winding fibers 11 which are impregnated with resin matrixes by the glue adding device 9 are wound on the internal composite material under the driving of the winding unit 4;
and step 3: enters the reinforced particle groove 6, is coated with the reinforced particles 12 on the outermost layer, and then enters the curing box 8 together for curing and forming.
The utility model discloses a preparation method of surface enhancement mode resin matrix combined material strengthening rib, surface enhancement mode combined material strengthening rib adopt the reinforcing of surface particles thing, and frictional force increases greatly, and more inseparabler that can combine with the concrete. Use the utility model discloses the combined material strengthening rib of preparation, surface have reinforcing granule, and base material, especially the most commonly used concrete compatibility is better, and surface roughness strengthens greatly moreover, when using as the strengthening rib, also will improve greatly with base material's interface cohesion. Therefore the utility model discloses a combined material strengthening rib has the advantage of current combined material strengthening rib, still has simultaneously with base material cohesion more strong, the reinforcing effect outstanding characteristics such as better.
Further, in step 1, the degree of precuring is 60% or less.
The utility model discloses in, if the resin matrix in step 1 is solid state, then steeping vat 2 adopts closed heating, pressor injecting glue formula steeping vat, if the resin matrix in step 1 is the thermosetting resin system, then needs heat curing box 3 in advance.
Preferably, in step 2, the wound material may be heat-treated in a heat treatment chamber 5.
As an improvement of the utility model, in step 3, the concrete mode that is stained with reinforcing granule at outmost gets into the groove that is equipped with reinforcing granule for the semi-solid combined material, and the groove bottom that is equipped with reinforcing granule preferably is provided with vibrator 7 to make reinforcing granule even be stained with at combined material skin.
The features and details of the present invention are further described below in conjunction with the following examples, but the listed processes and data are not meant to limit the scope of the invention.
Example one
The preparation of the thermosetting resin-based composite material reinforcing rib consisting of the inner-layer carbon fiber, the outer-layer glass fiber and the outermost-layer sandy soil is taken as an example for explanation.
50 bundles of 12K carbon fibers of internal reinforced fibers are well arranged on a creel 1, then the internal reinforced fibers are dipped in an epoxy-anhydride resin system through a dipping tank 2, precuring is carried out through a precuring box 3, the diameter of the curing box is 6.5mm, the length of the curing box is 90cm, every 30cm of the heating section is respectively at 60 ℃, 80 ℃ and 100 ℃, the curing degree of the composite material when the composite material comes out of the curing box 3 reaches 55 percent, then the winding fiber 3 bundles of 12K glass fibers dipped with phenolic resin matrix resin by a glue adding device 9 are wound on the internal composite material under the drive of a winding machine set 4, then the composite material enters a heat treatment box 5, a heat treatment oven is 90cm long and the heating temperature is 100 ℃, then the composite material enters a reinforced particle groove 6, reinforced particle sandy soil 12 is stained on the outermost layer, the reinforced particle sandy soil 6 is uniformly stained on the outer layer of the composite material under the action of a vibration device 7, and finally the composite material, the curing temperature is 150 ℃, and the fiber advancing speed is 600 mm/min.
Example two
The preparation of the thermoplastic resin matrix composite reinforcing rib composed of the aramid fiber at the inner layer, the basalt fiber at the outer layer and the kaolin at the outermost layer is taken as an example for illustration.
The 49 bundles of 6K aramid fibers of the internal reinforcing fibers are well arranged on the creel 1, and then the nylon resin system is impregnated in the impregnation tank 2, because the nylon is in a solid state, the impregnation tank in the second embodiment adopts a closed type heating and pressurizing glue injection type impregnation tank, and the temperature is 230 ℃ and 5 MPa. Precuring through a precuring box 3, wherein the diameter of the curing box is 3mm, the length of the curing box is 90cm, every 30cm of the curing box is heated, a thermoplastic composite material needs to be cooled and molded, the precuring box 3 does not need to be heated at the moment, the crystallinity of the composite material reaches 55% when the composite material comes out of the curing box 3, the composite material is impregnated with 3 bundles of 6K basalt fibers of nylon resin powder resin by a gluing device 9, the composite material is wound on an internal composite material under the driving of a winding machine set 4, then the composite material enters a heat treatment box 5, the length of the heat treatment oven is 90cm, the heating temperature is 150 ℃, the thermoplastic composite material has certain strength but the surface is in a viscous state, then the thermoplastic composite material enters a reinforced particle groove 6, reinforced particle sand 12 is adhered to the outermost layer, the reinforced particle sand 6 is uniformly adhered to the outer layer of the composite material under the action of a vibrating device 7, and, the curing oven was not heated at this time, and the fiber advancing speed was 700 mm/min.
The utility model discloses in, preparation method's condition is different, and the performance of the surface enhancement mode resin matrix composite strengthening rib that obtains has the difference, for proving better the utility model discloses the surface enhancement mode resin matrix composite strengthening rib frictional force of preparation is big, and stronger, the better performance of reinforcing effect with base material's cohesion, the following comparative example of construction:
comparative example 1:
a surface-enhanced resin-based composite material reinforcing rib is not covered with reinforcing particles any more, but is fastened with a base material such as concrete by a thread structure of the surface, the rest conditions are the same as in example 1, and the preparation and use methods are the same as in example 1.
The surface-reinforced resin matrix composite reinforcing bars prepared in example 1 and comparative example 1 were tested for their bonding strength to the base material, i.e., the force with which the reinforcing bar was pulled out of the base material, and the results are shown in table 1.
TABLE 1
| Inspection item | Example 1 | Comparative example 1 |
| Withdrawal of forces from the base material | 80kN | 50kN |
As can be seen from the table 1, the surface enhanced resin matrix composite material reinforcing rib of the utility model has stronger bonding force with the base material and better enhancing effect compared with the comparative example 1.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A surface enhanced resin-based composite material reinforcing rib is characterized by comprising an internal reinforced fiber resin-based composite material, an external winding layer and reinforced particles positioned on the surface of the reinforced fiber resin-based composite material and the outermost layer of the winding layer;
the winding layer is an outer layer formed by winding the reinforced fiber resin-based composite material by the reinforced fibers impregnated with the resin matrix.
2. The surface-reinforced resin-based composite reinforcing bar of claim 1, wherein the reinforcing fibers are carbon fibers, glass fibers, basalt fibers, aramid fibers, polyethylene fibers, or silicon carbide fibers.
3. The surface-enhanced resin-based composite reinforcing bar according to claim 1, wherein the resin matrix is an epoxy resin, a phenolic resin, a vinyl resin, a polypropylene, a nylon, a thermoplastic polyester resin, a polyphenylene sulfide resin or a polyether ether ketone resin.
4. The surface-enhanced resin-based composite reinforcing bar according to claim 1, wherein the reinforcing particles are sand, silica, glass beads, barium sulfate or kaolin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820105070.7U CN211664986U (en) | 2018-01-22 | 2018-01-22 | Surface enhanced resin-based composite material reinforcing rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820105070.7U CN211664986U (en) | 2018-01-22 | 2018-01-22 | Surface enhanced resin-based composite material reinforcing rib |
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| Publication Number | Publication Date |
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| CN211664986U true CN211664986U (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820105070.7U Active CN211664986U (en) | 2018-01-22 | 2018-01-22 | Surface enhanced resin-based composite material reinforcing rib |
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| CN (1) | CN211664986U (en) |
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