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Z-direction enhanced underwater sound absorption sandwich composite material and preparation method for same

A composite material and reinforcing material technology, which is applied in the field of Z-direction reinforced underwater sound-absorbing sandwich composite material and its preparation, can solve the problem that the structural bearing performance and sound-absorbing performance cannot be fully taken into account, and achieves improved bending stiffness and flat pressure. Strength-enhancing effect

Active Publication Date: 2013-02-13
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a Z-direction enhanced underwater sound-absorbing sandwich composite material and its preparation method to solve the problem that the existing underwater sound-absorbing sandwich composite materials cannot fully take into account the structural load-bearing performance and sound-absorbing performance , to realize the integration of high structural load-bearing performance and high sound absorption performance of underwater sound-absorbing composite materials

Method used

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  • Z-direction enhanced underwater sound absorption sandwich composite material and preparation method for same
  • Z-direction enhanced underwater sound absorption sandwich composite material and preparation method for same
  • Z-direction enhanced underwater sound absorption sandwich composite material and preparation method for same

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Embodiment 1

[0030] The Z-direction reinforced underwater sound-absorbing sandwich composite material in this embodiment is composed of glass fiber reinforced composite material upper and lower panels, sound-absorbing core layer and glass fiber reinforced composite material columns arranged between the upper and lower panels. The formula of the upper panel and the lower panel is: 3.0kg of matrix resin SWANCOR901-200, 0.06kg of curing agent MEKP, 0.009kg of accelerator cobalt naphthenate, S2 twill fabric as reinforcing fiber, fiber weight content of 60-62%, size It is 500mmх500mmх5mm; the sound-absorbing core layer formula is: epoxy resin matrix is ​​6kg (of which E51 is 2.4kg, 6350 is 3.6kg), filler is 2.4kg (of which glass flakes are 1.2kg, vermiculite powder is 0.6kg, semi-reinforcing carbon black 0.3kg, white carbon black 0.3kg), epoxy curing agent 5784 is 2.4kg, coupling agent KH550 is 0.06kg, the core layer size is 500mmх500mmх40mm, the upper and lower surfaces of the core material...

Embodiment 2

[0041] The difference between this embodiment and the first embodiment is that the sound-absorbing core layer is made of polyurethane elastomer material, and other compositions, structural forms, and preparation methods are the same as those of the first embodiment.

[0042] The improvement range of the structural performance and the underwater sound absorption performance in this embodiment is consistent with that of the first embodiment.

Embodiment 3

[0044] The difference between this embodiment and the first or second embodiment is that the sound-absorbing core layer is made of synthetic rubber, and the molding process of the rubber sound-absorbing material is a molding process. Other composition, structural form, preparation method are identical with embodiment one or two.

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Abstract

The invention discloses a Z-direction enhanced underwater sound absorption sandwich composite material and a preparation method for the same. The composite material comprises composite material panels, a sound absorption core material and enhancement structures, wherein the enhancement structures are arranged in the thickness direction of the sound absorption core material, namely a Z direction, between the upper and lower panels. The whole structure of the Z-direction enhanced underwater sound absorption sandwich composite material is formed by a vacuum assisted forming process. Compared with an ordinary sound absorption sandwich composite material, the Z-direction enhanced underwater sound absorption sandwich composite material has the advantages that flat compression strength is greatly strengthened, a compression modulus is improved by more than one order of magnitude, bending rigidity is doubled, sound absorption performance is improved by 10 to 85 percent, and sound absorption performance under high water pressure is improved by 50 to 85 percent; and the forming process has the advantages of high operability, high quality consistency, suitability for the formation of a large-sized composite material component, and the like.

Description

technical field [0001] The invention relates to an underwater sound-absorbing composite material technology, in particular to a Z-direction enhanced underwater sound-absorbing sandwich composite material and a preparation method thereof. Background technique [0002] At present, a fiber-reinforced resin matrix is ​​used to provide a Z-direction reinforced underwater sound-absorbing sandwich composite material and its preparation method, which solves the problem that the existing underwater sound-absorbing sandwich composite materials cannot fully take into account the structural load-bearing performance and sound-absorbing performance. to realize the integration of high structural load-bearing performance and high sound-absorbing performance of underwater sound-absorbing composite materials. The integrated sandwich structure composite material is gradually replacing the original sound-absorbing structure of "steel + noise-absorbing covering" to achieve the comprehensive purp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/168B32B27/04B32B3/22B32B3/30
Inventor 鲁先孝成天健刘树亮
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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