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Continuous preparation method of composite material tube

A composite material tube and continuous fiber technology, which is applied in the direction of tubular objects, other household appliances, household appliances, etc., can solve the problems of low flexural stiffness and axial strength of fiber-wound tubes, and limited application fields, and achieve excellent axis Longitudinal strength and bending rigidity, high circumferential strength, and strength-enhancing effect

Inactive Publication Date: 2012-08-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the existing fiber winding process is difficult to implement axial lay-up and small-angle lay-up, the bending stiffness and axial strength of the prepared fiber-wound pipe are not high, and the application field is limited, the invention has invented a Arbitrary angle fibers, especially axial and small angle fibers, and a method for continuous preparation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) In this example, the length of the mandrel used to prepare the composite pipe is 3000mm, the diameter of the cross-section is 90mm, and the width of the prepreg used is equal to the length of the mandrel, which is 3000mm;

[0033] (2) On the same equipment, the carbon fiber unidirectional prepreg tape is heated by a 30 ℃ hot roller, and then wound around the surface of the core mold to form a prepreg winding layer, and the carbon fiber unidirectional prepreg tape matrix is ​​epoxy resin Resin matrix, the volume percentage of carbon fibers is 65%, and the angle between the arrangement direction of carbon fibers and the axis of the core mold is 0 degrees;

[0034] (3) winding the carbon fiber soaked in the epoxy resin matrix glue on the surface to be processed, controlling the winding angle to be 90 degrees, and forming a layer of filament winding layer by circumferential winding;

[0035] (4) above-mentioned steps (2) to step (3) constitute a layering cycle, and the ...

Embodiment 2

[0039] (1) In this example, the length of the mandrel used to prepare the composite pipe is 3000mm, the diameter of the cross-section is 90mm, and the width of the prepreg used is equal to the length of the mandrel, which is 3000mm;

[0040] (2) On the same equipment, the glass fiber unidirectional prepreg tape is preheated by hot air at 180°C, and then wound on the surface of the core mold for two weeks to form two layers of prepreg winding layers. The matrix is ​​a polyester resin matrix, the volume percentage of glass fibers is 55%, and the angle between the arrangement direction of the glass fibers and the axis of the core mold is 3 degrees;

[0041] (3) After the glass fiber unidirectional prepreg tape is preheated by hot air at 180°C, it is wound on the surface of the core mold for two weeks to form two prepreg winding layers. The matrix in the glass fiber unidirectional prepreg tape is polyester resin. The matrix, the volume percentage of glass fibers is 55%, the angle ...

Embodiment 3

[0047] (1) In this example, the length of the mandrel used to prepare the composite pipe is 3000mm, the diameter of the cross-section is 90mm, and the width of the prepreg used is equal to the length of the mandrel, which is 3000mm;

[0048] (2) On the same equipment, the aramid fiber soaked in the phenolic resin matrix glue is wound on the surface of the core mold, the winding angle is controlled to be 30 degrees, and the spiral winding forms two oblique fiber winding layers;

[0049] (3) After the aramid fiber woven prepreg is preheated by 60°C infrared lamp irradiation, it is wound on the surface to be processed for three times to form a three-layer prepreg winding layer. The matrix in the aramid fiber woven prepreg is Phenolic resin matrix, the volume percentage of aramid fiber is 65%;

[0050] (4) above-mentioned steps (2) to step (3) constitute a layup cycle, and 10 cycles are carried out in a loop to complete the layup;

[0051] (5) The product after the above-mentione...

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Abstract

The invention relates to a continuous preparation method of composite material tube, comprising two basic processes of: (1) winding: winding a circle on a surface to be processed after the continuous fiber prepreg is pre-heated and forming a prepreg winding layer; and (2) binding: binding the continuous fibers of the impregnated resin matrix glue solution to the surface to be processed, wherein the fibers are neither overlapped nor separated and are distributed to the surface to be processed uniformly and continuously to form a fiber binding layer; when layering, the process (1) and the process (2) are carried out in turn on the same device; and the composite material tube is formed through curing and demoulding. According to the invention, the fiber layering layer of the fiber enhanced composite material tube can be layered at any angle from 0 to 90 degrees through the manner of winding fibers and binding prepreg in turn; and the fiber enhanced composite material tube has higher circumferential strength, excellent axial strength and bending rigidity.

Description

technical field [0001] The invention relates to a continuous preparation method of a composite material pipe, in particular to a continuous preparation method of a fiber reinforced composite material pipe. Background technique [0002] Fiber-reinforced composite pipe is a composite product, and common reinforcing fibers include glass fiber and carbon fiber. Compared with traditional metal pipes, it has the advantages of light weight, high strength and strong corrosion resistance. It can be used to replace metal materials as various structural parts. It is widely used in aerospace, automobile manufacturing, textile machinery and many other fields. widely used. [0003] Fiber reinforced composite pipes are usually prepared by winding or coiling. Winding means that the continuous fibers soaked in the resin matrix glue are wound on the core mold according to a certain rule under the action of tension, and after reaching a certain thickness, they are cured, obtained by demouldi...

Claims

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Application Information

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IPC IPC(8): B29C70/50B29C70/54B29C53/60B29L23/00
Inventor 施云舟潘任行朱晓萌王彪王华平
Owner DONGHUA UNIV
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