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Vibration-attenuation and noise-reduction restrained damping plate manufacturing method and vibration-attenuation and noise-reduction restrained damping plate

A constrained damping, vibration reduction and noise reduction technology, applied in vibration reduction and noise reduction, aviation field, can solve the problems of high processing cost, damping material failure, long delivery cycle, etc., achieve light weight, reduce surface density, and realize light weight sexual effect

Inactive Publication Date: 2019-02-01
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult to replace or debonded around, resulting in failure of damping material or corrosion aging
[0008] d) Complicated processing
High processing cost and long lead time

Method used

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  • Vibration-attenuation and noise-reduction restrained damping plate manufacturing method and vibration-attenuation and noise-reduction restrained damping plate
  • Vibration-attenuation and noise-reduction restrained damping plate manufacturing method and vibration-attenuation and noise-reduction restrained damping plate
  • Vibration-attenuation and noise-reduction restrained damping plate manufacturing method and vibration-attenuation and noise-reduction restrained damping plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] refer to figure 2 , the thickness of the constrained layer is 1 mm, the thickness of the viscoelastic damping material is 1 mm, the constrained layer is aviation aluminum, the viscoelastic damping material is butyl rubber, the adhesive layer is epoxy and acrylic adhesive layer, the adhesive layer layout is as follows image 3 (a) shown.

[0077] Among them, the ratio of viscoelastic damping materials: butyl rubber: 100, carbon black 50; 201 resin 10; stearic acid 1, zinc oxide 5, AO-80 5, molybdenum disulfide 0.1, mica 2, super fine powder 2, vermiculite powder 2; Add RHA0.1.

[0078] Tested in accordance with relevant standards, after 192 hours of mold test, the surface of the damping plate for vibration and noise reduction is grade 0. At the same time meet the use of -55 ℃ ~ 80 ℃. Vibration and noise reduction Constrained damping plate surface density 4.4kg / m 2 . The vibration and noise reduction constrained damping plate of Example 1 was subjected to a DMA test...

Embodiment 2

[0082] refer to figure 2 , the thickness of the constrained layer is 0.5mm, the thickness of the viscoelastic damping material is 1mm, the constrained layer is aviation aluminum, the viscoelastic damping material is butyl rubber, the adhesive layer is epoxy and acrylic adhesive layer, the adhesive layer layout is as follows image 3 (b) shown.

[0083] Among them, the ratio of viscoelastic damping materials: butyl rubber: 100, carbon black 50; 201 resin 10; stearic acid 1, zinc oxide 5, AO-80 10, molybdenum disulfide 0.5, mica 5, super fine powder 5, vermiculite powder 5; add RHA0.5.

[0084] Tested in accordance with relevant standards, after 192 hours of mold test, the surface of the damping plate for vibration and noise reduction is grade 0. At the same time meet the use of -55 ℃ ~ 80 ℃. Vibration and noise reduction Constrained damping plate surface density 2.8kg / m 2 . The tensile modal DMA test was carried out on the vibration reduction and noise reduction constrain...

Embodiment 3

[0088] refer to figure 2 , the thickness of the constrained layer is 0.5mm, the thickness of the viscoelastic damping material is 2mm, the constrained layer is aviation aluminum, the damping layer is brominated butyl rubber, the adhesive layer is epoxy and acrylic adhesive layer, the adhesive layer layout is as follows image 3 (b) shown.

[0089] see Figure 7 , wherein the ratio of viscoelastic damping materials: butyl rubber: 100, carbon black 50; 201 resin 10; stearic acid 1, zinc oxide 5, AO-80 20, molybdenum disulfide 1, mica 10, super fine powder 5, leech Stone powder 5; add RHA0.5.

[0090] Tested in accordance with relevant standards, after 192 hours of mold test, the surface of the damping plate for vibration and noise reduction is grade 0. At the same time, it can be used in an environment of -55°C to 80°C, and the surface density of the vibration and noise reduction constraint damping plate is 3.3kg / m 2 . Comparing the DMA test of Example 3 vibration reductio...

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Abstract

The invention discloses a vibration-attenuation and noise-reduction restrained damping plate manufacturing method and the vibration-attenuation and noise-reduction restrained damping plate. The vibration-attenuation and noise-reduction restrained damping plate manufacturing method includes the following steps: carrying out surface anodization treatment of a restraint layer; carrying out surface sandblasting treatment of a rubber bonding surface of the restraint layer, and cleaning the treated restraint layer with a metal cleaning agent; designing a viscoelastic damping material; spraying the rubber bonding surface of the restraint layer with a binder, tabletting the viscoelastic damping material on the restraint layer, and then carrying out vulcanization processing of the restraint layer and the viscoelastic damping material at high temperature to form a composite layer; after placing the composite layer for a predetermined time, cleaning and drying the surface of the viscoelastic damping material, and then arranging a bonding layer, so as to form the vibration-attenuation and noise-reduction restrained damping plate.

Description

technical field [0001] The invention relates to the technical field of vibration reduction and noise reduction in the aviation field, in particular to a method for manufacturing a vibration reduction and noise reduction constrained damping plate and a vibration and noise reduction constrained damping plate. Background technique [0002] During the flight of the aircraft, the panel structure bears vibration loads from the power system and airflow pulsation. Under vibration excitation, typical thin-shell structures such as wall panels will generate vibration and noise, which will affect the comfort in the cabin; the vibration damping materials are mostly rubber or resin damping materials, through additional constraining layers (mostly aluminum foil or Composite materials) and adhesive layers are attached to the fuselage structure to achieve the effect of vibration reduction and sound insulation. [0003] Patent CN 105269882 mentions a manufacturing method of a lightweight con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/29
CPCC09J7/29C09J2301/16C09J2400/163C09J2423/006C09J2433/00C09J2463/00
Inventor 赵苗苗潘凯李鹏王建强周江贝
Owner CHINA AIRPLANT STRENGTH RES INST
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