Weaving sleeve pipe type fiber reinforce plastic (FRP) rib and preparation method thereof

A casing and pre-forming technology, which is used in mining equipment, earth-moving drilling, sheet pile walls, etc., can solve the problems of insufficient circumferential strength of FRP bars, and achieve the effect of good circumferential performance indicators and strong adaptability.

Inactive Publication Date: 2013-03-20
SHANGHAI KNP CHEM +3
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a braided sleeve-type FRP bar, and provides a preparation method for the FRP bar at the same time. The application of the FRP bar can improve the defect of insufficient hoop strength of the existing FRP bar. In order to realize Above object, the present invention adopts following technical scheme:

Method used

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  • Weaving sleeve pipe type fiber reinforce plastic (FRP) rib and preparation method thereof
  • Weaving sleeve pipe type fiber reinforce plastic (FRP) rib and preparation method thereof
  • Weaving sleeve pipe type fiber reinforce plastic (FRP) rib and preparation method thereof

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Embodiment Construction

[0016] The technical solutions of the present invention will be further elaborated and illustrated below in conjunction with specific embodiments.

[0017] figure 1 It is a structural schematic diagram of a braided sleeve-type FRP tendon 1 according to an embodiment of the present invention. The FRP tendon 1 is in the shape of a rod, and there are protrusions 11 on the surface of the FRP tendon 1, which are distributed on the surface of the FRP tendon 1 in the form of a pattern. , the pattern is plain weave, twill weave or satin weave; the FRP tendon 1 also has a helical structure 12, and the helical structure is arranged transversely on the FRP tendon 1 and is continuous.

[0018] figure 2 It is a structural schematic view of another embodiment of a braided sleeve type FRP tendon of the present invention when it is applied, wherein it includes an FRP tendon 1, a nut 2 and a backing plate 3, and one end of the FRP tendon 1 has a sharp angle, so that The FRP bar is convenien...

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Abstract

The invention discloses a weaving sleeve pipe type fiber reinforce plastic (FRP) rib and a preparation method of the weaving sleeve pipe type FRP rib. The FRP rib is provided with protrusions and thread structures, wherein the protrusions are distributed on the surface of the FRP rib in a pattern mode and the thread structures are horizontal. The FRP rib comprises reinforced fibers and dipping glue solution. All or part of the reinforced fibers are woven into fiber sleeve pipes. The matrix of the dipping glue solution is heat convertible resin or unsaturated polyester resin. The FRP rib further comprises curing agents, initiating agents and packing. The preparation step of the FRP rib comprises delivering yarn, placing the sleeve pipes, dipping glue, packing fibers, performing, intertwine-sizing, dragging, solidification forming and cutting. The weaving sleeve pipe type FRP rib is excellent in longitudinal tensile strength, good in surrounding strength, capable of adapting to new demands for the FRP rib in existing application, low in preparation cost, capable of being manufactured after slight improvement on the base of existing equipment and easy to popularize. Application range of the FRP rib is greatly widened.

Description

【Technical field】 [0001] The invention belongs to the field of civil engineering materials, and relates to a fiber reinforced resin FRP and a preparation method thereof. 【Background technique】 [0002] Traditional fiber-reinforced resin FRP tendons, in which the reinforcing material is mainly artificial synthetic continuous fibers, such as glass fibers, carbon fibers, aramid fibers and basalt fibers. The FRP bars produced with the above-mentioned reinforcing materials have good radial strength (such as tensile strength), but their hoop strength (such as bending strength, shear strength and torsional strength, etc.) are very low. With the continuous expansion of engineering application fields and usage in recent years, FRP bars can no longer fully meet the requirements in many occasions; especially in the application field of self-drilling FRP bolts, traditional fiber-reinforced resin FRP bars cannot be used due to insufficient torsional strength . [0003] In order to make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E21D21/00C08L101/02C08L63/00C08L77/10C08L23/06C08L1/26C08L1/02C08K13/08C08K7/10C08K7/14C08K7/06B29C70/40
Inventor 张杰吴辉生何唯平
Owner SHANGHAI KNP CHEM
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