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Wideband underwater acoustic absorption and transmission material and preparation method thereof

A sound-transmitting material and wide-band technology, applied in the field of underwater acoustic materials, can solve problems such as single function, and achieve the effect of excellent physical and mechanical properties

Active Publication Date: 2011-01-05
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] However, the disadvantages of the above technologies are that each material or product has only a single function, sound transmission or sound absorption, and materials that include these two functions have not been reported yet. There is an urgent need for a low-frequency sound transmission, high-frequency Materials with sound-absorbing characteristics

Method used

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  • Wideband underwater acoustic absorption and transmission material and preparation method thereof
  • Wideband underwater acoustic absorption and transmission material and preparation method thereof
  • Wideband underwater acoustic absorption and transmission material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The parts by weight of the various components of the material are shown in Table 2 in the present embodiment:

[0030] Table 2 The parts by weight of the various components of the material of embodiment 1

[0031] Material

Sound-permeable layer (parts)

Sound-absorbing layer (parts)

Chlorobutyl rubber

100

100

High wear-resistant carbon black

40

20

light calcium carbonate

10

10

Dioctyl sebacate

5

5

Zinc oxide

20

20

stearic acid

10

10

Antiager D

1.5

1.5

Accelerator TMTD

1

1

sulfur

2

2

Zinc powder

-

2

[0032] The preparation method is as follows:

[0033] Mastication: Firstly, the chlorinated butyl rubber is thinned and masticated on an open mill for 5 minutes. After mastication, it is parked for 24 hours for mixing.

[0034] Mixing of the sound-transmitting layer: The mixing of ru...

Embodiment 2

[0044] Others are the same as embodiment 1. But the parts by weight of the various components of the material are shown in Table 3:

[0045] Table 3 The parts by weight of the various components of the material of embodiment 2

[0046] Material

[0047] iron powder

[0048] According to the test method stipulated in GB / T 14369-1993, the acoustic performance of the material is tested in the anechoic pool, and the results are shown in Figure 4 and Figure 5 .

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Abstract

The invention discloses a wideband underwater acoustic absorption and transmission material and a preparation method thereof. The wideband underwater acoustic absorption and transmission material is prepared by adhering and compounding an acoustic absorption layer with the thickness of 2-5 mm and an acoustic transmission layer with the thickness of 10-15 mm, the acoustic transmission layer is prepared from the following components in parts by weight: 100 parts of chlorinated butyl rubber, 20-40 parts of carbon black, 5-10 parts of calcium carbonate, 5 parts of dioctyl sebacate, 5-35 parts of zinc oxide, 5-35 parts of stearic acid, 0.5-1.5 part of age resister D, 0.5-1.5 parts of accelerant TMTD (Tetramethylthiuram Disulfide) and 0.5-2.0 parts of sulfur; and the acoustic absorption layer is prepared from the following components in percentage by weight: 100 parts of chlorinated butyl rubber, 20-40 parts of carbon black, 5-10 parts of calcium carbonate, 5 parts of dioctyl sebacate, 5-35parts of zinc oxide, 5-35 parts of stearic acid, 0.5-1.5 part of age resister D, 0.5-1.5 parts of accelerant TMTD, 0.5-2.0 parts of sulfur and 0.5-2.0 parts of zinc powder or iron powder. The underwater acoustic absorption and transmission rubber material has excellent physical mechanical performance as well as and acoustic transmission and absorption characteristics and can be used for researching a special underwater acoustic frequency band.

Description

technical field [0001] The invention relates to a technology in the field of underwater acoustic materials, in particular to a wide-band underwater sound-absorbing sound-transmitting material and a preparation method thereof. Background technique [0002] Underwater acoustic materials generally include sound-transmitting, sound-absorbing, and sound-insulating materials, and are mainly used for underwater equipment and acoustic transducers. According to different application environments, these types of materials generally play their respective roles in their exclusive application fields. At present, there are no reports on materials that include sound transmission and sound absorption properties at the same time. Filtering for studying specific hydroacoustic frequency bands. [0003] The Chinese patent with the publication number CN200997679 discloses a sound-transmitting dome. The sound-transmitting material is a polyurethane rubber-type material, which has good sound-perm...

Claims

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Application Information

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IPC IPC(8): B32B25/18H04R1/44B29C69/00B29B7/28
Inventor 孙英富林新志王绪文
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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