A compound material shell sound reflection board and its making method

A composite material and manufacturing method technology, applied in the direction of sounding equipment, instruments, etc., can solve the problems of many production processes, difficult quality control, low production efficiency, etc. The effect of cost reduction and production efficiency improvement

Inactive Publication Date: 2008-09-17
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

[0004] The purpose of the present invention is to invent a new type of anti-acoustic baffle——a composite shell anti-acoustic baffle, which solves the shortcoming

Method used

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  • A compound material shell sound reflection board and its making method
  • A compound material shell sound reflection board and its making method
  • A compound material shell sound reflection board and its making method

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Embodiment Construction

[0023] The density of the core material is 300±10Kg / m 3 The rigid polyurethane foam, the size of the foam body is: the thickness is 358mm×135mm×22mm. The shell is made of 2.5mm thick non-alkali needle felt + 0.2mm thick surface felt as the reinforcement material, using DSM430LV vinyl injection resin as the matrix material, the ratio of reinforcement material and resin is: 40:60, and it is obtained by injection molding with RTM injection molding machine Composite shell anti-acoustic baffle, under the condition of satisfying the acoustic performance, its preparation process is compared with the current rubber shell anti-acoustic baffle technology as shown in Table 1:

[0024] Table 1 Contrast table between existing baffle manufacturing technology and the technology of the present invention

[0025]

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Abstract

The invention discloses a composite material coat reflection baffle and a method of manufacturing the composite material coat reflection baffle. The baffle comprises rigid polyurethane foam core materials. Outside the core materials is provided with seawater resistance resin matrix composite material coat. The coat is manufactured in a Resin Transfer Molding technics by seawater resistance low viscosity epoxy vinyl ester resin and alkali-free glass fiber mat when a curing agent and an accelerant exist. Compared with existing rubber coat reflection baffle, the composite material coat reflection baffle obviously reduces production energy consumption and other cost, and is provided with a better pressure resistance and seawater resistance performance and a better acoustic performance, and is provided with obvious economic benefit.

Description

technical field [0001] The invention relates to an underwater acoustic anti-acoustic material product, in particular to an anti-acoustic baffle for a composite material casing and a manufacturing method thereof. Background technique [0002] The current anti-acoustic baffle is composed of a rigid polyurethane foam core and a waterproof rubber shell. The molding process is as follows: first prepare rigid polyurethane foam that meets the requirements of acoustic performance, and then process it into an anti-acoustic baffle core material according to product specifications, then wrap the core material with waterproof rubber film, and then go through vacuum-pre-vacuumizing. Vulcanization—cooling repair—full vulcanization—cooling mortar repair—revulcanization—finished product trimming—inspection and other processes. Its disadvantages are: because the forming of the waterproof rubber layer needs multiple vulcanization and cooling repairs in stages, it consumes time, water and ele...

Claims

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Application Information

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IPC IPC(8): G10K11/162G10K11/168B29C45/14B29K105/06B29K63/00C08K5/14
Inventor 温锋石晓王满昌
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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