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Waterproof sound-transmitting membrane assembly

A waterproof and sound-permeable membrane and component technology, which is applied in the field of membrane materials, can solve the problems of cracking, reducing the efficiency of scientific research and inspection, and can no longer be waterproof and sound-permeable, so as to ensure normal use, avoid damage, excellent chemical resistance and insulation sexual effect

Active Publication Date: 2020-09-01
HANGZHOU IPRO MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When conducting some scientific research missions, researchers often need to go 100 meters or even deeper underwater for investigation, but at this time, some of the above-mentioned waterproof sound-permeable membranes will undergo irreversible deformation or even rupture due to the impact of water pressure. As a result, it can no longer play the role of waterproof and sound transmission, so that electronic equipment cannot be used normally, which not only reduces the efficiency of scientific research and investigation, but also affects the accuracy of the final results of scientific research and investigation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A waterproof sound-permeable membrane assembly, comprising a first waterproof layer and a second support layer, the first waterproof layer is made of ePTFE material whose elastic limit relative deformation S is 15%, and the second support layer is made of polyimide material As a result, there is an interval d between the first waterproof layer and the second support layer, and d is 0.1mm; the first waterproof layer includes a waterproof section, and the diameter and length D of the waterproof section is 2mm;

[0049] The elastic limit pressure of the second supporting layer is 400MPa, and the elastic limit pressure of the first waterproof layer is 50KPa;

[0050] Under the action of 1MPa water pressure, the relative deformation A of the second support layer is 0.02%;

[0051] Under the action of 1MPa water pressure, the relative deformation of the waterproof section

[0052] E=(2d+AD) / D=(2*0.1+0.02%*2) / 2=10.02%

Embodiment 2

[0056] A waterproof sound-permeable membrane assembly, comprising a first waterproof layer and a second support layer, the first waterproof layer is made of ePTFE material whose elastic limit relative deformation S is 15%, and the second support layer is made of polyimide material As a result, there is an interval d between the first waterproof layer and the second support layer, and d is 0.2mm; the first waterproof layer includes a waterproof section, and the diameter and length D of the waterproof section is 3mm;

[0057] The elastic limit pressure of the second support layer is 200MPa, and the elastic limit pressure of the first waterproof layer is 50KPa;

[0058]Under the action of 1MPa water pressure, the relative deformation A of the second support layer is 0.05%;

[0059] Under the action of 1MPa water pressure, the relative deformation of the waterproof section

[0060] E=(2d+AD) / D=(2*0.2+0.05%*3) / 3=13.38%

Embodiment 3

[0064] A waterproof sound-permeable membrane assembly, comprising a first waterproof layer and a second support layer, the first waterproof layer is made of ePTFE material whose elastic limit relative deformation S is 10%, and the second support layer is made of polyimide material As a result, there is an interval d between the first waterproof layer and the second support layer, and d is 0.05mm; the first waterproof layer includes a waterproof section, and the diameter and length D of the waterproof section is 1.5mm;

[0065] The elastic limit pressure of the second support layer is 100MPa, and the elastic limit pressure of the first waterproof layer is 40KPa;

[0066] Under the action of 1MPa water pressure, the relative deformation A of the second support layer is 0.08%;

[0067] Under the action of 1MPa water pressure, the relative deformation of the waterproof section

[0068] E=(2d+AD) / D=(2*0.05+0.08%*1.5) / 1.5=6.75%

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Abstract

The invention provides a waterproof sound-transmitting membrane assembly capable of being normally used 100 meters underwater. The assembly comprises a first waterproof layer and a second support layer. An interval d exists between the first waterproof layer and the second support layer, the first waterproof layer comprises a waterproof section, and the diameter length of the waterproof section isD. The relative deformation amount E of the waterproof section is equal to (2d + AD) / D and is not greater than the elastic limit relative deformation amount S of the waterproof section when the waterproof section is subjected to the water pressure of 1MPa, wherein A is the relative deformation of the second support layer under the action of 1MPa water pressure. The range of the elastic limit relative deformation S of the waterproof section is 1%-30%. The first waterproof layer has the characteristics of high hydrophobicity, excellent chemical resistance, insulativity and the like, and the second support layer has relatively high elastic limit pressure and is used for providing a supporting effect for the first waterproof layer. The waterproof sound-transmitting membrane assembly can resist the influence of 1MPa (100m water pressure), and can still play a waterproof and sound-transmitting role when the water pressure is 100m underwater, so that the normal application of electronic device is ensured.

Description

technical field [0001] The invention relates to the technical field of membrane materials, and more specifically relates to a waterproof sound-permeable membrane component that can be normally used underwater at 100 meters. Background technique [0002] Waterproof and sound-permeable membrane is a new type of waterproof and breathable material. It uses sound-transmitting materials to minimize the sound loss during sound transmission. At present, the main techniques for preparing waterproof and sound-permeable membranes are as follows: 1. Cast composite ; 2, glue spraying or scraping compound; 3, hot pressing compound, etc. With the rapid development of electronic digital, waterproof and sound-permeable membranes have also been widely used; at present, waterproof and sound-permeable products are mainly used in sensors, gas detectors, batteries, hearing aids, video cameras, digital cameras, underwater equipment and testing instruments, etc. in the field. [0003] Waterproof ...

Claims

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Application Information

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IPC IPC(8): H04R1/00C09J7/29
CPCH04R1/00C09J7/29H04R2201/00C08G83/001C09J2427/006C09J2479/086C09J2467/006C09J2461/006
Inventor 贾建东蔡梁
Owner HANGZHOU IPRO MEMBRANE TECH
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