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.
CN102979097AInactive Publication Date: 2013-03-20SHANGHAI KNP CHEM +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI KNP CHEM
Publication Date
2013-03-20
Estimated Expiration
Not applicable · inactive patent

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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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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