Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wideband underwater acoustic absorption and transmission material and preparation method thereof

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

Active Publication Date: 2013-08-28
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
View PDF2 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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
Comparison scheme
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 l...

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] 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 .

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com