A kind of sound-absorbing backing material applied to ultrasonic probe and preparation method thereof

An ultrasonic probe and backing technology, which is applied in the direction of material analysis, analysis materials, and instruments using sound waves/ultrasonic waves/infrasonic waves. problem, achieve good application value, meet the acoustic performance requirements, and reduce the effect of air bubbles

Active Publication Date: 2019-09-24
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The backing material generally uses epoxy resin plus tungsten powder, silicone rubber plus tungsten powder, epoxy resin plus mercuric chloride and other solid-solid composite materials. Due to the complex acoustic and process characteristics of the probe, it is difficult to take into account. Therefore, for the probe The research on backing materials has been little progress

Method used

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  • A kind of sound-absorbing backing material applied to ultrasonic probe and preparation method thereof
  • A kind of sound-absorbing backing material applied to ultrasonic probe and preparation method thereof
  • A kind of sound-absorbing backing material applied to ultrasonic probe and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Mix 5% phenol ether alcohol glycidyl ether, 0.25% coupling agent KH5500, 0.25% white carbon black, and 2% amine curing agent evenly, stir manually for 10 minutes, add 92.5% GW025 tungsten powder (2.3~2.7μm ), manually stirred for 10±0.1 minutes; mixed with a three-roll mill to obtain a uniformly dispersed mixture, and placed in a mold; put the mold in an oven to heat and cure, and kept it at 120±0.1°C for 2-3 hours; closed the oven, and the sample Take it out after gradually cooling in the oven. The organizational structure of the obtained sample is shown in figure 1 shown, from figure 1 It can be seen that the tungsten powder is uniformly dispersed and basically free of bubbles. According to the national standard GB / T 18022-2000, the acoustic characteristic impedance and acoustic attenuation coefficient are 6.42MPa·s / m and 40.6dB / cm respectively.

Embodiment 2

[0026] Mix 10% phenol ether alcohol glycidyl ether, coupling agent KH560 0.5%, white carbon black 0.5%, amine curing agent 3%, mix well, stir manually for 10 minutes, add 86% GW025 tungsten powder (2.3~2.7μm) , manually stirred for 10 minutes; mixed with a three-roller mill to obtain a uniformly dispersed mixture, and placed in a mold; put the mold into an oven to heat and cure, and kept it at 120±0.1°C for 2-3 hours; turn off the oven, and the sample is placed in the oven Take it out after cooling down gradually. The organizational structure of the obtained sample is shown in figure 2 shown, from figure 2 It can be seen that the tungsten powder is uniformly dispersed and basically free of bubbles. According to the national standard GB / T 18022-2000, the acoustic characteristic impedance and acoustic attenuation coefficient are 4.83MPa·s / m and 64.1dB / cm respectively

Embodiment 3

[0028] Mix 1% phenol ether alcohol glycidyl ether, coupling agent KH570 0.1%, white carbon black 0.1%, amine curing agent 0.3%, mix well, stir manually for 10 minutes, add 98.5% GW025 tungsten powder (2.3~2.7μm) , manually stirred for 10 minutes; mixed with a three-roller mill to obtain a uniformly dispersed mixture, and placed in a mold; put the mold into an oven to heat and cure, and kept it at 120±0.1°C for 2-3 hours; turn off the oven, and the sample is placed in the oven Take it out after cooling down gradually.

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Abstract

The invention discloses a sound-absorbing back lining material applied to ultrasonic probes and a preparation method thereof. The back lining material comprises the following components in percentage by mass: 1-10% of phenolic ether alcohol glycidol ether, 0.1-0.5% of coupling agent, 0.1-0.5% of white carbon black, 0.3-3% of curing agent and 86-98.5% of tungsten powder. The preparation method comprises the following steps: 1) uniformly mixing the phenolic ether alcohol glycidol ether, coupling agent, white carbon black and curing agent, stirring for 10+ / -0.1 minutes, adding the tungsten powder, stirring for 10+ / -0.1 minutes, and grinding and mixing to obtain a uniformly dispersed mixture; and 2) putting the mixture into a drying oven, thermosetting, keeping at 120+ / -0.1 DEG C for 2-3 hours, and cooling to obtain the sound-absorbing back lining material. The prepared sample has the advantages of uniformly dispersed tungsten powder, basically no bubble, favorable damping capacity and favorable acoustic properties.

Description

technical field [0001] The invention belongs to the field of materials and structures. Specifically, the invention relates to a sound-absorbing backing material applied to an ultrasonic probe and a preparation method thereof. Background technique [0002] In recent years, international research on new ultrasonic functional materials has attracted attention. The relevant achievements have greatly promoted the development of medical diagnosis and treatment, industrial non-destructive testing and underwater communication detection. However, my country's development in these industries is relatively lagging behind. For example, domestic medical The main manufacturers of ultrasonic equipment are Shenzhen Mindray, Shantou Ultrasonic Instrument Research Institute, etc. There are many small manufacturers, but currently only low-end products are available, and the price is generally 1 / 5-1 / 10 of foreign high-end products. The main reason for the low price and poor competitiveness of do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/24
Inventor 白国锋张秀娟隋富生程玨
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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