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Vibration and noise reduction material and preparation method thereof

A technology for vibration and noise reduction and raw materials, applied in the field of materials, can solve the problems of small vibration frequency range, large proportion of metal vibration and noise reduction materials, and reduced vibration and noise reduction performance, so as to broaden the use frequency range and improve the use temperature. range, the effect of improving vibration and noise reduction performance

Active Publication Date: 2021-12-24
SHANDONG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional metal vibration and noise reduction materials cannot meet the current vibration and noise reduction requirements in the aerospace field due to their large specific gravity, high cost, and low vibration and noise reduction performance. Polymer vibration and noise reduction materials are low in density and easy to process. , easy to adjust performance and excellent vibration and noise reduction performance have a wider application prospect
However, in practical applications, the vibration and noise reduction performance of polymer materials is greatly affected by the use temperature, vibration frequency and deformation amplitude, resulting in limited use temperature, small vibration frequency range and reduced vibration and noise reduction performance of such materials. It is necessary to develop new polymer vibration and noise reduction materials with excellent high and low temperature resistance, high damping characteristics in a wide temperature range, and high sound insulation characteristics in a wide frequency range

Method used

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  • Vibration and noise reduction material and preparation method thereof
  • Vibration and noise reduction material and preparation method thereof
  • Vibration and noise reduction material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Mixing: Weigh chlorinated butyl rubber, natural rubber, high molecular weight polyisobutylene, hyperbranched silicone oil and various fillers in proportion with an electronic scale or an electronic balance, and use a double-roller rubber mixer to process the chlorinated butyl rubber. , natural rubber, high molecular weight polyisobutylene and hyperbranched silicone oil are mixed and masticated for 8 to 12 times, then plasticizers, weighting agents, reinforcing agents and deodorants are added, and flame retardants are added several times after the ingredients are eaten When the material is completely eaten, after the filler is completely eaten, use a cutter to cut and roll from both sides of the film, and after pouring the glue at least 5 times, the film is unloaded to obtain the initial mixed film, and it is left to air for at least 2 hours;

[0040] (2) Add vulcanizing agent: turn on the cooling water of the double-roller rubber mixing machine, lock the roller dista...

Embodiment 2

[0054] This embodiment 2 specifically relates to the preparation method of the hyperbranched silicone oil used in embodiment 1, specifically as follows:

[0055] In a reaction kettle equipped with a stirring device, add Si-H content of 0.010%-1.565% (wt%) hydrogen-containing silicone oil, monohydroxyl-terminated silicone oil and tris(pentafluorophenyl)borane, wherein Si-H and The molar ratio of monohydroxy silicone oil is about 1:1.01, the added weight of tris(pentafluorophenyl)borane is 0.1%-2% of the raw material, stir mechanically, react at the reaction temperature of 40°C for 4h, add tris(pentafluorophenyl)borane (Pentafluorophenyl) borane with an appropriate amount of triethylamine, fully stirred, filtered, and removed low boilers under reduced pressure to obtain a colorless hyperbranched silicone oil.

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Abstract

The invention discloses a vibration and noise reduction material and a preparation method thereof, and belongs to the technical field of materials. The vibration and noise reduction material comprises, by weight, 65-75 parts of chlorinated butyl rubber, 25-35 parts of natural rubber, 35-45 parts of polyisobutene, 10-40 parts of hyperbranched silicone oil, 10-20 parts of a plasticizer, 20-30 parts of a weighting agent, 5-8 parts of a reinforcing agent, 30-60 parts of a flame retardant, 2-4 parts of a vulcanizing agent, 2-3 parts of an accelerant and 3-5 parts of a deodorant. The vibration and noise reduction material can be used for a long time in a wide temperature domain and a frequency domain, has a high damping characteristic in the wide temperature domain and a high sound insulation characteristic in the wide frequency domain, and can effectively reduce the vibration level and the noise magnitude in a cabin when being applied to a cabin wall interlayer part.

Description

technical field [0001] The application relates to a vibration-reducing and noise-reducing material and a preparation method thereof, in particular to a vibration-reducing and noise-reducing material for airport siding interlayers and a preparation method thereof, which belongs to the field of material technology. Background technique [0002] Today, with the deepening of globalization, large civil aircraft play an important role in international economic and trade exchanges. At present, Boeing and Airbus share most of the market share in international civil aviation routes. With the strengthening of my country's national strength and the deepening of international exchanges, independent research and development of large civil aircraft has also been put on the agenda. The high economy and high safety requirements of large civil aircraft make many related aerodynamic problems need to be solved urgently. Vibration and noise are one of the aerodynamic problems that must be paid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08L7/00C08L23/20C08L83/07C08L83/08C08K5/09C08K3/22C08K3/30C08K3/38C08K3/06C08K5/14C08K5/40C08K3/04
CPCC08L23/283C08L2201/08C08K2003/2296C08K2003/3045C08K2003/387C08K2003/2227C08L7/00C08L23/22C08L83/04C08K5/09C08K3/22C08K3/30C08K3/38C08K3/06C08K5/14C08K5/40C08K3/042C08L83/08
Inventor 郝敏周传健
Owner SHANDONG UNIV
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