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Rib manufacturing device and method for continuous fiber reinforced thermoplastic composite rod

A technology of reinforced thermoplastic and composite materials, which is applied in the direction of household components, household appliances, and other household appliances. It can solve the problems of mechanical properties and durability decline, continuous preparation, and low bonding strength, etc., to achieve stable rib performance, Improved mechanical properties and service life, simple operation

Pending Publication Date: 2021-12-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the ribbed FRP bars that have been developed at home and abroad are mainly fiber-reinforced thermosetting resin composite materials, and the shape and geometric dimensions of the ribbed FRP bars prepared by them are fixed, and cannot be continuously prepared; some studies are prepared by epoxy resin curing and bonding. Ribbed FRP tendons, this method has problems such as low bonding strength between ribs and easy debonding; a few studies use mechanical methods to form thread structures on the surface of FRP tendons, which increases the surface area of ​​FRP tendons, but this method causes surface parts The fiber breaks, resulting in a significant decline in mechanical properties and durability; very few studies use thermoplastic resin ribs to wrap FRP bars, but the ribbing process still uses the traditional thermosetting ribbing method, which has not really taken advantage of the thermoplastic resin's secondary melt molding

Method used

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  • Rib manufacturing device and method for continuous fiber reinforced thermoplastic composite rod
  • Rib manufacturing device and method for continuous fiber reinforced thermoplastic composite rod
  • Rib manufacturing device and method for continuous fiber reinforced thermoplastic composite rod

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Embodiment 1. A continuous fiber reinforced thermoplastic composite rod rib making device in this embodiment includes moving rollers 2 arranged outside the steel frame 1, a control console 3, and traction rollers 7, as well as heating pipes arranged inside the steel frame 1. 4. Extrusion shaping part 5 and cooling pipe 6; the heating pipe 4 and cooling pipe 6 are respectively located on both sides of the extrusion shaping part 5, and the extrusion shaping part 5 and traction roller 7 are respectively located on the cooling pipe 6 On both sides of the steel frame 1, the heating pipe 4 and the cooling pipe 6 are respectively fixedly connected to the side walls of the steel frame 1;

[0036] The inside of the tube body of the heating tube 4 is evenly provided with a number of heating galvanic rods 401 and a number of high temperature sensors 402, the heating galvanic rods 401 and the high temperature sensors 402 are evenly arranged in the axial direction of the heating tube...

Embodiment 2

[0041] Embodiment 2, a method for making ribs of a continuous fiber-reinforced thermoplastic composite rod according to this embodiment is carried out in the following steps:

[0042] Step 1: Start the heating galvanic rod 401 on the heating tube 4 to make the temperature reach 180-400°C and keep it constant;

[0043] Step 2: Pass cooling water into the cooling pipe 6, start the servo motor of the extrusion shaping part 5, and adjust the rotation speed of the driving gear 503 through the console 3, so that the thread pitch on the continuous fiber reinforced thermoplastic composite rod is 4 mm to 16 mm , the allowable error is ±0.5mm, driven by the traction roller 7, the continuous fiber reinforced thermoplastic composite rod 8 passes through the extrusion shaping part 5 to obtain the CFRTP threaded rib 9, and the traction speed is divided into low speed and high speed, wherein the low speed is 0.1m / min~1.0m / min, the high speed is 1.0m / min~5.0m / min, the thermoplastic matrix mater...

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Abstract

The invention discloses rib manufacturing device and method for a continuous fiber reinforced thermoplastic composite rod. The invention belongs to the field of preparation of engineering material CFRTP. The rib manufacturing device for the continuous fiber reinforced thermoplastic composite material rod comprises a moving roller, a control console and a traction roller which are arranged outside a steel frame, and a heating pipe, an extrusion shaping part and a cooling pipe which are arranged inside the steel frame, the heating pipe and the cooling pipe are located on the two sides of the extrusion shaping part correspondingly, the extrusion shaping part and the traction roller are located on the two sides of the cooling pipe correspondingly, and the heating pipe and the cooling pipe are fixedly connected with the side wall of the steel frame correspondingly. The device has the advantages of being stable in rib manufacturing performance, easy in operation, convenient in use and the like; and the manufactured CFRTP threaded rib is used for reinforcing a concrete structure, so that the cohesive force between the CFRTP rib and concrete meets the structural safety requirement, the mechanical property of the concrete structure is remarkably improved, and the service life of the concrete structure is remarkably prolonged.

Description

technical field [0001] The invention belongs to the field of engineering material CFRTP preparation, and in particular relates to a rib making device and method for a continuous fiber reinforced thermoplastic composite rod. Background technique [0002] With the rapid development of large-scale infrastructure construction and civil engineering in China, reinforced concrete structures are widely used in construction engineering, road and bridge engineering, water conservancy engineering and other fields. However, with the increase of its service life, the corrosion of steel bars will lead to the degradation of its bearing capacity, thereby reducing the service life and increasing the maintenance cost. FRP has the characteristics of light weight, high strength, and corrosion resistance. Therefore, replacing ordinary steel bars with FRP has become an effective method to solve the corrosion of steel bars. At present, fiber reinforced composite materials can be divided into fibe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C59/04B29C35/02B29C35/16B29L31/06
CPCB29C59/04B29C35/007B29C35/16B29C35/0294B29C35/0277B29C2035/0211B29C2035/1616B29L2031/06
Inventor 咸贵军周平郭瑞李承高白艳博岳清瑞
Owner HARBIN INST OF TECH
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