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Fiber composite bar with surface having helicitic texture, and making method thereof

A fiber composite bar and thread technology, applied in structural elements, building components, building structures, etc., can solve problems such as low mechanical properties, anchoring performance, etc., and achieve the effects of excellent mechanical properties, increased gripping force, and high fiber orientation.

Active Publication Date: 2013-07-31
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical problem to be solved is to overcome the defects of lower mechanical properties and / or anchoring properties of the existing fiber-reinforced composite bars

Method used

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  • Fiber composite bar with surface having helicitic texture, and making method thereof
  • Fiber composite bar with surface having helicitic texture, and making method thereof
  • Fiber composite bar with surface having helicitic texture, and making method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a method for preparing a fiber composite rib with a threaded structure on the surface adopts a pultrusion machine including a creel, a dipping tank, a circular high-temperature die, a post-curing furnace and a pulling device, and a reinforcing fiber roll is fixed on the creel ;Tai Li 12K-T36S carbon fiber bundle is filled with bisphenol A epoxy resin matrix through the dipping tank, the resin matrix of the dipping tank is bisphenol A epoxy resin E51, produced by Wuxi Resin Factory, the quality of resin matrix: curing agent: catalyst The ratio is: bisphenol A epoxy resin: methyl tetrahydrophthalic anhydride: epoxy accelerator DMP-30; 100:80:2. Under the pulling action of the pulling device at a pultrusion rate of 10cm / min, the carbon fiber bundles fall off the creel, enter the impregnation tank and are fully impregnated by the resin matrix, and then pass through the circular high-temperature die to solidify and shape; further pass through the pos...

Embodiment 2

[0036] A method for preparing fiber composite ribs with a thread structure on the surface, using a pultrusion machine including a creel, a dipping tank, a circular high-temperature die, a post-curing furnace and a pulling device, and impregnating the Zhejiang Jushi 12K glass fiber bundles with resin The resin system of the dipping tank is ordinary bisphenol A epoxy resin E51, the curing agent is methylhexahydrophthalic anhydride, the catalyst is DMP30, and the mass ratio is 100:80:2. Under the pulling action of the pulling device at a pultrusion rate of 180cm / min, the glass fiber falls off the creel, enters the impregnation tank and is fully impregnated by the resin matrix, and then passes through the circular high temperature die to solidify and shape; further pass through the post-curing furnace It is cured at high temperature to form a continuous fiber reinforced grease-based composite round rod. Pultrusion of continuous glass fiber reinforced resin-based rods with a diamete...

Embodiment 3

[0040] Such as Figure 1-2 As shown, a method for preparing a fiber composite rib with a threaded structure on the surface: a pultrusion machine including a creel, a dipping tank, a circular high-temperature die, a post-curing furnace and a pulling device, and a reinforcing fiber roll is fixed on the creel ; The impregnation tank contains the resin matrix. Under the pulling action of the pulling device at a pultrusion rate of 10-180cm / min, the reinforcing fiber falls off the creel, enters the impregnation tank and is fully impregnated by the resin matrix, and then passes through the round high temperature port Mold, curing and forming; further high-temperature curing through the post-curing furnace to form continuous fiber-reinforced resin-based composite round rods; wherein, by controlling the amount of continuous fiber bundles and the diameter of the pultrusion die, the fiber-reinforced resin-based composite round rods are adjusted The diameter of the prepared continuous fibe...

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Abstract

The invention relates to a fiber composite bar with the surface having a helicitic texture, and a making method thereof. The method which adopts a pultrusion technology comprises the following steps: fully dipping reinforced fibers in a resin matrix in a dipping tank, and carrying out curing molding through a circular high-temperature die; carrying out high temperature curing through a curing furnace for the height orientation of the reinforced fibers in a bar piece to ensure the high mechanical properties of a material; and utilizing a cutting technology to mold the helicitic textures of determined positions comprising the surface or the end portion or the like of the circular bar piece, and carrying out coating spray treatment of the cut surface after completing the helicitic texture cutting. The fiber composite bar has a high fiber orientation degree, has a far higher tensile performance than traditional ribbed bars, and has an excellent anchoring performance.

Description

Technical field [0001] The invention relates to a fiber composite rib with a thread structure on the surface and a preparation method thereof. Background technique [0002] Fiber-reinforced resin matrix composite bars have excellent properties such as light weight, high strength, and corrosion resistance. In the field of civil engineering, they can replace traditional steel bars to reinforce concrete structures; they can also replace steel strands and other cables used in suspension bridges; also It can be used to strengthen and strengthen the prestress of concrete structures. The fiber-reinforced resin-based composite ribs are mainly made of continuous reinforcing fibers (such as inorganic or organic high-performance fibers such as glass fiber, basalt fiber, carbon fiber and aramid fiber) and a polymer resin matrix through a pultrusion process. Traditional fiber-reinforced composite materials mainly have the following forms: [0003] 1) Ribbed ribs: During the pultrusion process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/07B29C70/52
Inventor 咸贵军陆中宇李惠
Owner HARBIN INST OF TECH