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Sound absorption and sound insulation earplug and preparing method thereof

A production method and technology of earplugs, which are applied in the direction of earplugs, single-component polystyrene artificial filaments, etc., can solve problems such as limited effects, and achieve the effects of convenient operation, short process flow, and simple control

Inactive Publication Date: 2017-07-21
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the vast majority of earplugs now achieve the purpose of sound insulation by isolating sound waves. This kind of sound insulation is passive sound insulation, and the effect is limited. If you use sound-absorbing materials and cooperate with related manufacturing processes, you can make active sound-absorbing and anti-noise earplugs.

Method used

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  • Sound absorption and sound insulation earplug and preparing method thereof
  • Sound absorption and sound insulation earplug and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] S1: Prepare the spinning solution solvent in a brown grinding bottle in units of mass,

[0030] Prepare the spinning solution solvent in a brown grinding bottle in units of mass, the solvent is tetrahydrofuran and N-N dimethylformamide, the solvent mass ratio is tetrahydrofuran: N-N dimethylformamide = 3:1, weigh polystyrene As a solute, prepare a spinning solution, put the configured solution on a magnetic stirrer and stir at a constant speed for 3 hours, control the temperature and relative humidity of the experimental environment, until the solution is uniform, and prepare a solution concentration of 30wt% spinning solution;

[0031] S2: Pour the spinning solution prepared in step S1 into a syringe with an inner diameter of 0.7 mm and a capacity of 10 ml, fix the syringe on the syringe pump, and connect the injection port of the syringe and the experimental receiving plate to the positive and negative terminals of the DC high voltage power supply respectively The rec...

example 2

[0035] S1: Prepare the spinning solution solvent in the brown ground-mouth bottle by mass, and prepare the spinning solution solvent in the brown ground-mouth bottle by mass. The solvent is tetrahydrofuran and N-N dimethylformamide, and the solvent mass ratio is Tetrahydrofuran: N-N dimethylformamide = 3:1, weigh polystyrene as the solute, prepare spinning solution, put the prepared solution on a magnetic stirrer and stir at a constant speed for 3 hours, control the temperature and relative humidity of the experimental environment, until The solution is uniform, and the concentration of the prepared solution is 35wt% spinning solution;

[0036] S2: Pour the spinning solution prepared in step S1 into a syringe with an inner diameter of 0.7 mm and a capacity of 10 ml, fix the syringe on the syringe pump, and connect the injection port of the syringe and the experimental receiving plate to the positive and negative terminals of the DC high voltage power supply respectively The re...

example 3

[0040]S1: Prepare the spinning solution solvent in the brown ground-mouth bottle by mass, and prepare the spinning solution solvent in the brown ground-mouth bottle by mass. The solvent is tetrahydrofuran and N-N dimethylformamide, and the solvent mass ratio is Tetrahydrofuran: N-N dimethylformamide = 3:1, weigh polystyrene as the solute, prepare spinning solution, put the prepared solution on a magnetic stirrer and stir at a constant speed for 3 hours, control the temperature and relative humidity of the experimental environment, until The solution is uniform, and the concentration of the prepared solution is 35wt% spinning solution;

[0041] S2: Pour the spinning solution prepared in step S1 into a syringe with an inner diameter of 0.7 mm and a capacity of 10 ml, fix the syringe on the syringe pump, and connect the injection port of the syringe and the experimental receiving plate to the positive and negative terminals of the DC high voltage power supply respectively The rec...

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Abstract

The invention relates to a sound-absorbing and sound-insulating earplug and a manufacturing method thereof. The sound-absorbing and sound-insulating earplug includes two parts, an elastic shell and a shell interlayer. The elastic shell imitates the shape of a Helmholtz resonator and consists of a spherical cavity and a neck. The shell The interlayer is filled with porous sound-absorbing materials, which can be adapted to deal with different noise environments by adjusting the size of the new sound-absorbing earplugs and the spinning parameters of the porous sound-absorbing materials. It has the advantages of wide noise reduction frequency and good sound absorption effect.

Description

technical field [0001] The invention relates to a sound-absorbing and sound-insulating device and a manufacturing method thereof, in particular to an imitation Helmholtz resonator earplug and a manufacturing method thereof. Background technique [0002] The sound-absorbing and sound-insulating earplugs currently used are usually composed of ordinary sound-absorbing materials, such as cotton fibers, which have a certain sound-insulating effect on ordinary sounds, but do not have sound-insulating effects on large high-decibel noises, and noise waves can still pass through. The earplugs pass into the eardrum and cause harm to the eardrum. [0003] Helmholtz resonator sound absorption is widely used as an effective low-frequency noise control measure and method. When the sound Helmholtz resonator is located, when the air inside the resonator is forced to be compressed by external fluctuations, The air in the pipe will vibrate, and the air in the cavity will produce a restoring ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F11/08D01F6/22
CPCA61F11/08D01F6/22
Inventor 孙朝阳徐岚何吉欢
Owner SUZHOU UNIV
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