Automobile damping-controllable butadiene-acrylonitrile rubber-based magnetorheological elastomeric material and preparation method thereof

A technology of magnetorheological elasticity and nitrile rubber, which is applied in the field of automobile parts preparation, can solve the problems of lack of self-regulation ability, and achieve the effects of good elastic recovery, excellent damping performance, and good sound absorption

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

AI Technical Summary

Problems solved by technology

[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 f

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] A damping controllable nitrile rubber-based magnetorheological elastic material for automobiles, which is composed of the following raw materials in parts by weight: nitrile rubber 77, tetrahydrofuran 183, maleic anhydride 53, benzoyl peroxide 5, proper amount of ethanol, hydrogen Oxidized sodium hypophosphite 3, appropriate amount of xylene, softwood fiber 35, stearic acid 2, carbon black 4, sulfur 2, appropriate amount of deionized water, triethanolamine 2, nickel powder 5, appropriate amount of 6mol / L NaOH aqueous solution, tetrabutyl titanate 6.

[0028] Specific steps are as follows:

[0029] (1) Preparation of maleic anhydride grafted nitrile rubber (MAH-g-NBR):

[0030] Completely dissolve the nitrile rubber in tetrahydrofuran, add the mixed solution of maleic anhydride and benzoyl peroxide dropwise with a dropping funnel, pass in nitrogen protection, heat up to 70℃, react at a constant temperature for 8 hours, and then precipitate with ethanol The grafted product is ...

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Abstract

The invention discloses an automobile damping-controllable butadiene-acrylonitrile rubber-based magnetorheological elastomeric material, which is composed of the following raw materials (by weight): 60-80 parts of butadiene-acrylonitrile rubber, 140-190 parts of tetrahydrofuran, 48-68 parts of maleic anhydride, 2-5 parts of benzoyl peroxide, a proper amount of ethanol, 2-4 parts of sodium hypophosphite hydroxide, a proper amount of xylene, 28-37 parts of softwood cellulose, 1-2 parts of stearic acid, 2-6 parts of carbon black, 1-2 parts of sulphur, a proper amount of deionized water, 1-3 parts of triethanolamine, 2-8 parts of nickel powder, a proper amount of NaOH aqueous solution and 3-7 parts of tetrabutyl titanate. By the use of maleic anhydride for grafting butadiene-acrylonitrile rubber and then compounding with softwood cellulose through grafting, damping property and sound absorption and noise reduction properties of the material are enhanced. Meanwhile, by adding titanium dioxide coated nickel core-shell structured metal particles, the prepared butadiene-acrylonitrile rubber-based magnetorheological elastomeric material has controllable damping performance and can be applied in the fields of vibration damping, noise reduction and the like.

Description

technical field [0001] The invention belongs to the field of automobile parts preparation, and in particular relates to a nitrile rubber-based magnetorheological elastic material with controllable damping 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 8-12 parts such as hoardings, car doors, car roofs, car floors, and trunks. Commonly used damping materials generally reduce vibration by storing and consuming vibration energy by themselves, lacking self-regulation capabilities. For this reason, a smart damping material with good controllability and nonlinear characteristics is urgently needed. [0003] Magnetorheological material...

Claims

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Application Information

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IPC IPC(8): C08L51/04C08L97/02C08K13/06C08K9/10C08K3/22C08K3/08C08K5/09C08K3/04C08K5/10C08F279/04C08F222/06
CPCC08F279/04C08K2201/011C08L51/04C08L97/02C08K13/06C08K9/10C08K2003/2241C08K2003/0862C08K5/09C08K3/04C08K5/10C08F222/06
Inventor 黄浩
Owner WUHU HONGKUN AUTO PARTS
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