Noise absorber and pneumatic tire comprising noise absorber

A technology for noise absorption and pneumatic tires, which is applied in the field of pneumatic tires and noise absorbers, can solve the problems of no targeted research and no impact on sound absorption effects, etc., achieve good sound absorption and vibration reduction effects, and improve sound absorption and noise reduction effect, noise reduction effect

Pending Publication Date: 2022-02-08
OTSUKA MATERIAL SCI & TECH SHANGHAICO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the study on the influence of the material and structure of the sound-absorbing material on the sound-absorbing effect in this plan does not involve
The sound-absorbing effect is closely related to the performance and structure of the material, but there is no targeted research on this aspect in the prior art

Method used

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  • Noise absorber and pneumatic tire comprising noise absorber
  • Noise absorber and pneumatic tire comprising noise absorber
  • Noise absorber and pneumatic tire comprising noise absorber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Example 1: Sound-absorbing effect test of foam sound-absorbing bodies with different materials and structures

[0102] Sample Preparation:

[0103] Single layer structure:

[0104] Use a ring blade with a diameter of 100mm to cut the sound-absorbing material with a thickness of 30mm to its corresponding size on a punching machine.

[0105] Two-tier structure:

[0106] First, attach the double-sided tape to one side of the sound-absorbing material with a thickness of 30mm to be cut, and use a circular blade with a diameter of 100mm to cut the sound-absorbing material to its corresponding size on the punching machine. Then attach another cut single-layer structure sample to the side of the sample with double-sided tape to form a two-layer structure

[0107] Three-tier structure:

[0108] First, stick double-sided tape on both sides of the sound-absorbing material with a thickness of 30mm to be cut, and use a circular blade with a diameter of 100mm to cut the sound-a...

Embodiment 2

[0126] Example 2: Adhesion test between foam and butyl rubber

[0127] T-peeled spline preparation:

[0128] Make a test sample:

[0129] Cut the butyl rubber lining layer with a thickness of 2.5mm and the sound-absorbing material with a thickness of 30mm into a spline of 140mm and 20mm in length, and glue it with double-sided tape or structural adhesive from one section to 110mm in length, and reserve 30mm as Stripped segment.

[0130] T-peel test:

[0131] The two ends of the sample bar were peeled at a speed of 300mm / min, and the peeling force was tested.

[0132] The T-type test is carried out on the foam and butyl rubber strips bonded with double-sided pressure-sensitive adhesive or structural adhesive. The T-type test data are shown in Table 4 below:

[0133] Table 4

[0134] T-type test peel force (N / 20mm) before aging After aging (100℃*7 days) Foam and Butyl Rubber 10.5 11.7

[0135] It can be seen from the above Table 4 that the nois...

Embodiment 3

[0144] Sample Preparation:

[0145] First, attach the non-woven double-sided tape to the two sides of 2 pieces of sound-absorbing material 1 with a size of 40mm*15mm*2200mm to prepare a sample of the corresponding size, and then respectively attach the two pieces of polyurethane foam to the edge of 110mm*15mm *On both ends of the same side of the sound-absorbing material 1 (polyurethane foam TWA25) with a size of 2200 mm.

[0146] fit:

[0147] Grind or clean the inner side of the tire for a week along the circumferential direction of the tire, tear off the prepared sample with the release film side, and arrange it symmetrically on the tire cross-section with respect to the plane where the crown centerline of the tire is located.

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Abstract

The invention relates to a noise absorber and a pneumatic tire comprising the noise absorber. The noise absorber comprises one or more internal sound absorbing material layers (3), one or more external sound absorbing material layers (1) and an interface noise reduction adhesion layer (2) arranged between the internal sound absorbing material layers (3) and the external sound absorbing material layers (1); and an external adhesion layer (5) which is arranged on the external sound absorption material layers (1) and is opposite to the interface noise reduction adhesion layer (2), wherein a middle filling structure (4) is arranged in the middle of the external sound absorbing material layers (1), one side of the middle filling structure (4) is in direct contact with the internal sound absorbing material layers (3), and the other side of the middle filling structure (4) is open. The noise absorber has a good adhesion effect and good noise reduction and vibration reduction effects.

Description

technical field [0001] The application belongs to the technical field of noise absorption and tire manufacturing, and relates to a noise absorber, in particular to a noise absorber for a low-noise pneumatic tire, and a pneumatic tire including the noise absorber. Background technique [0002] In recent years, with the continuous improvement of consumers' requirements for tire quality, in addition to safety, wear resistance, and comfort, quiet driving has also become a new goal for tire manufacturers to upgrade their technology. When the vehicle is running, the internal pressure change of the rolling tire will squeeze the air in the tire to produce the so-called "cavity noise". These noises generally have obvious and sharp resonance peaks between 150-250Hz. Through resonance, the vehicle body (steering wheel, seat, chassis) to the car, bringing a very unpleasant feeling to the driver and passengers in the car. Therefore, the reduction of this noise is an important aspect to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/08B32B7/12B32B27/40B32B3/24B32B5/02B32B27/12B32B33/00B60C19/00
CPCB32B3/08B32B7/12B32B5/18B32B3/266B32B5/022B32B27/12B32B33/00B60C19/002B32B2266/0278B32B2266/06B32B2307/102
Inventor 詹必才贺炅皓朱光苗项大兵张舜
Owner OTSUKA MATERIAL SCI & TECH SHANGHAICO LTD
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