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Adhesive applying method of embedded silencing honeycomb

An adhesive and embedded technology, which is applied to the device and coating of the surface coating liquid, can solve the problems of poor glue application flexibility, low efficiency, and uneven glue application, so as to reduce production and manufacturing costs. cost, ensuring uniformity, and improving the effect of casting efficiency

Active Publication Date: 2020-11-03
AVIC COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes an adhesive application method for embedded sound-absorbing honeycomb, which solves technical problems such as poor glue application flexibility, low efficiency, and uneven glue application during the preparation process of embedded sound-absorbing honeycomb.

Method used

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  • Adhesive applying method of embedded silencing honeycomb
  • Adhesive applying method of embedded silencing honeycomb
  • Adhesive applying method of embedded silencing honeycomb

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Choose NH-1-5.5-48 honeycomb produced by AVIC Composite Materials, and process a piece of aramid paper honeycomb with a thickness of 30mm and a cell size of 5.5mm, as a honeycomb core material for the embedded sound-absorbing honeycomb. .

[0043] (2) Select the SY-24C epoxy resin produced by Beijing Institute of Aeronautical Materials, prepare an epoxy resin solution according to the ratio of 100g glue to 500ml acetone, and use it as an adhesive solution for later use.

[0044](3) Immerse the honeycomb core material prepared in step (1) into the adhesive solution prepared in step (2) for 1 min, then take it out slowly, with an immersion height of 20 mm. The removed honeycomb core material was placed in a ventilated place for 2 hours to allow the solvent to fully evaporate.

[0045] (4) Soak the honeycomb core material in the acetone solution until the adhesive in the acetone soaking place is completely dissolved in the acetone, then take out the honeycomb, and the...

Embodiment 2

[0047] (1) Choose NH-1-5.5-48 honeycomb produced by AVIC Composite Materials, and process a piece of aramid paper honeycomb with a thickness of 30mm and a cell size of 5.5mm, as a honeycomb core material for the embedded sound-absorbing honeycomb. .

[0048] (2) Choose the J-80B epoxy resin produced by Heilongjiang Petrochemical Research Institute, prepare an epoxy resin solution according to the ratio of 100g glue to 500ml ethyl acetate, and use it as an adhesive solution for later use.

[0049] (3) Immerse the honeycomb core material prepared in step (1) into the adhesive solution prepared in step (2) for 1 min, then take it out slowly, with an immersion height of 20 mm. The removed honeycomb core material was placed in a ventilated place for 3 hours to allow the solvent to fully evaporate.

[0050] (4) Soak the honeycomb into the ethyl acetate solution pool until the adhesive in the ethyl acetate soaking place is completely dissolved in the ethyl acetate, then take out the...

Embodiment 3

[0052] (1) Choose NH-1-4.5-48 honeycomb produced by AVIC Composite Materials, and process a piece of aramid paper honeycomb with a thickness of 50mm and a cell size of 4.5mm, as a honeycomb core material for the embedded sound-absorbing honeycomb. .

[0053] (2) Choose the J-154 epoxy resin produced by Heilongjiang Petrochemical Research Institute, prepare an epoxy resin solution according to the ratio of 80g glue to 500ml acetone, and use it as an adhesive solution for later use.

[0054] (3) Immerse the honeycomb core material prepared in step (1) into the adhesive solution prepared in step (2) for 1 min, then take it out slowly, and the immersion height is 30 mm. After taking out the honeycomb core material, put it into the adhesive solution for 30 seconds and then take it out slowly. Let it air in a ventilated place for 2 hours to fully evaporate the solvent.

[0055] (4) Soak the honeycomb core material in the acetone solution pool until the adhesive in the acetone soak...

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Abstract

The invention relates to an adhesive applying method of an embedded silencing honeycomb. The adhesive applying method comprises the following steps of S110, selecting a honeycomb core material for preparing the embedded silencing honeycomb, wherein the thickness of the honeycomb core material is 10 mm-200 mm, and the side length of an inner cavity of the honeycomb core material is 2.0 mm-8.0 mm; S120, immersing the honeycomb core material into an adhesive solution in a manner that a honeycomb hole wall is perpendicular to the liquid level, taking out the honeycomb core material after the adhesive solution is attached to the honeycomb hole wall, and then putting the honeycomb core material in a ventilated place for airing or putting the honeycomb core material in a drying oven, so that a solvent on the honeycomb hole wall is fully volatilized, wherein the height position of an adhesive cured on the honeycomb hole wall is consistent with the depth of the bottom of a hat-shaped fabric needing to be bonded; and step S130, soaking one part of the honeycomb hole wall where the adhesive is attached in the solvent of the adhesive, so that the adhesive on the soaked part is fully dissolvedby the solvent, and the adhesive reserved on the honeycomb hole wall is used for bonding the hat-shaped fabric.

Description

technical field [0001] The invention relates to the technical field of functional honeycomb manufacturing, in particular to an adhesive dispensing method of an embedded sound-absorbing honeycomb. Background technique [0002] The resonant sound-absorbing structure composed of micro-perforated panels, sound-absorbing honeycomb and non-porous backplane has good sound-absorbing effect, and has been widely used in the acoustic lining of aircraft engines and other parts. In this structure, since the honeycomb core material is composed of several honeycomb cells, the air layer is divided into multiple closed sub-cavities. On the one hand, this structure can greatly hinder the heat and sound waves entering the structure, and on the other hand, the honeycomb wall can effectively reflect the sound waves, thereby effectively increasing the sound absorption effect. [0003] The traditional sound-absorbing structure is only composed of a layer of honeycomb structure plus a layer of per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/18B05D7/22
CPCB05D1/18B05D7/22
Inventor 纪双英刘杰郝巍
Owner AVIC COMPOSITES
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