Vamp wrapping process for carbon fiber prepreg repaired aluminum alloy crack pipe

A carbon fiber prepreg, aluminum alloy tube technology, applied in the field of composite materials, can solve the problems of the immature wrapping process of composite materials repairing aluminum alloy cracked tubes, and the lack of research on composite materials repairing aluminum alloy cracked tubes, so as to improve the bearing capacity and avoid cracking effect

Inactive Publication Date: 2014-12-03
PLA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the research on repairing cracked aluminum alloy plates with composite materials at home and abroad has been very in-depth. However, there are very few studies on the repair of cracked aluminum alloy tubes wit

Method used

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  • Vamp wrapping process for carbon fiber prepreg repaired aluminum alloy crack pipe
  • Vamp wrapping process for carbon fiber prepreg repaired aluminum alloy crack pipe
  • Vamp wrapping process for carbon fiber prepreg repaired aluminum alloy crack pipe

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Embodiment

[0021] The present invention finally obtains the repair component (such as image 3 ), including positioning, gluing, winding and curing four steps, the specific process is as follows.

[0022] (1) Positioning, take the crack of the aluminum alloy tube as the symmetrical point, and paste the common adhesive tape (clear tape, etc.) on both ends of the crack of the aluminum alloy tube symmetrically. The inner distance between the two adhesive tapes is 100mm. (that is, the length of the patch) is 100mm, the repair effect of the patch is the best;

[0023] (2) gluing, mixing acetone and epoxy resin with a volume ratio of 1:1 to obtain epoxy resin glue, and smearing the prepared epoxy resin glue between the two adhesive tapes evenly;

[0024] (3) Winding, the prepared patch is wound between two adhesive tapes, and the lap length is 1mm;

[0025] (4) Curing. Heat and cure the wrapped components. The curing system is 80°C / 1h+130°C / 1h. The reason for choosing the above curing system...

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Abstract

The invention discloses a vamp wrapping process for a carbon fiber prepreg repaired aluminum alloy crack pipe. The process comprises the following steps of symmetrically adhering adhesive tapes to the two ends of a crack of the aluminum alloy pipe by taking the crack of the aluminum alloy pipe as a symmetry point, wherein the space between the inner sides of the two adhesive tapes is the length of a vamp; uniformly smearing epoxy resin glue between the two adhesive tapes; cutting prepreg into rectangles, laminating the rectangles, preheating the prepreg for 10 to 15min to form the vamp at 30 to 40 DEG C, and winding the vamp between the two adhesive tapes, wherein the overlapping length is 1mm; winding a paper self-adhesive tape on the surface of the wrapped vamp for two circles, and performing heating curing. Compared with the prior art, the process has the significant advantages that (1) the bearing capacity of a pipe fitting repaired by the vamp wrapping process is improved and stabilized; (2) the phenomenon of cracking of the prepreg in a winding process can be effectively avoided.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a patch wrapping process for repairing cracked aluminum alloy pipes with carbon fiber prepregs. Background technique [0002] The technology of repairing damaged aluminum alloy components by bonding composite materials is a high-quality, high-efficiency, and low-cost structural repair technology. Compared with traditional mechanical repair technologies, it has the advantages of less structural weight gain, good formability, and high repair efficiency. , In addition, when the composite material is repaired, it is not necessary to open holes to the raw material, and will not cause a new source of stress concentration, thereby effectively improving the fatigue resistance of the structure. Therefore, in recent years, the research on repairing damaged aluminum alloy components with composite materials has attracted the attention of many researchers. [0003] At present,...

Claims

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Application Information

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IPC IPC(8): B23P6/04
CPCB23P6/04
Inventor 柳锦春秦美君赵启林陈力彭永高飞蔡珣李展孙志远
Owner PLA UNIV OF SCI & TECH
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