Vehicle nitrile butadiene rubber damping material having multi-channel sound absorption effect, and preparation method thereof

A technology of nitrile rubber and damping material, which is applied in the field of automobile parts preparation, can solve the problems of damping material shock absorption and insufficient sound absorption performance, and achieve the effects of good elastic recovery, alleviation of compression deformation, and improvement of compatibility.

Inactive Publication Date: 2017-03-22
WUHU HONGKUN AUTO PARTS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of insufficient shock absorption and sound absorption performance of existing dam

Method used

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Embodiment Construction

[0023] A kind of nitrile rubber damping material with multi-channel sound-absorbing effect for automobiles, consisting of the following raw materials in parts by weight: nitrile rubber 55, chlorinated butyl rubber 35, tetrahydrofuran 164, maleic anhydride 60, benzoyl peroxide 4. Appropriate amount of ethanol, sodium hypophosphite hydroxide 3, xylene appropriate amount, cork fiber 29, stearic acid 2, carbon black 4, sulfur 2, perlite 2, polyacrylamide emulsion 0.6.

[0024] Specific steps are as follows:

[0025] (1) Preparation of maleic anhydride grafted nitrile rubber (MAH-g-NBR):

[0026] Completely dissolve nitrile rubber in tetrahydrofuran, add the mixed solution of maleic anhydride and benzoyl peroxide drop by drop with a dropping funnel, pass through nitrogen protection, heat up to 70°C, react at constant temperature for 8 hours, and then precipitate out with ethanol The grafted product was washed several times with ethanol, and the washed grafted product was dried in ...

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Abstract

The invention discloses a vehicle nitrile butadiene rubber damping material having a multi-channel sound absorption effect, wherein the vehicle nitrile butadiene rubber damping material is prepared from the following raw materials by weight: 46-62 parts of a nitrile butadiene rubber, 27-36 parts of a chlorobutyl rubber, 130-175 parts of tetrahydrofuran, 43-64 parts of a maleic anhydride, 1-5 parts of benzoyl peroxide, a proper amount of ethanol, 2-4 parts of sodium hypophosphite hydroxide, a proper amount of xylene, 23-31 parts of softwood fiber, 1-2 parts of stearic acid, 3-6 parts of carbon black, 1-2 parts of sulfur, 1-3 parts of perlite, and 0.2-0.8 part of a polyacrylamide emulsion. According to the present invention, the maleic anhydride is used to graft the nitrile butadiene rubber, and then the obtained material and the softwood fiber are subjected to graft compounding, such that the internal friction resistance of the rubber molecule chain activity is enhanced, and the damping property of the material is enhanced; and the sound absorption and noise reducing performance of the damping material is improved by using the characteristics of the softwood fiber so as to prepare the nitrile butadiene rubber damping material having the excellent shock reducing and noise reducing performance.

Description

technical field [0001] The invention belongs to the field of automobile parts preparation, and in particular relates to an acrylonitrile-butadiene rubber damping material with multi-channel sound absorption effect for automobiles and a preparation method thereof. Background technique [0002] Damping material is a kind of shock-absorbing and noise-reducing material developed in recent years. It can convert vibration and sound energy into heat energy and dissipate new functional materials. It is widely used in various mechanical equipment, especially in the front of the car passenger compartment. There are applications in 8-12 parts such as hoardings, car doors, car roofs, car floors, and trunks. Therefore, the research and development of new high-efficiency damping materials with excellent comprehensive performance has become a hot spot at home and abroad. [0003] In the article "Preparation and Performance Research of Blended Wide Temperature Range High Damping Rubber Mate...

Claims

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Application Information

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IPC IPC(8): C08L87/00C08L23/28C08L33/26C08K13/02C08K5/09C08K7/26C08K3/04C08K3/06C08G81/02C08F279/02
CPCC08F279/02C08G81/02C08L87/005C08L2205/03C08L23/283C08L33/26C08K13/02C08K5/09C08K7/26C08K3/04C08K3/06
Inventor 黄浩
Owner WUHU HONGKUN AUTO PARTS
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