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Damping vibration attenuation composite material containing nanocrystalline and manufacturing method thereof

A technology of composite materials and nano-crystals, applied in the field of damping and vibration-reducing composite materials containing nano-crystals and its manufacturing, can solve the problems of composite materials losing damping effect, achieve good economic and social value, simple operation, and improve damping performance effect

Inactive Publication Date: 2017-02-22
IANGSU COLLEGE OF ENG & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The hybridization of polar rubber and functional organic small molecules is a commonly used method for the development of damping and vibration-absorbing materials. However, due to the addition of excessive functional organic small molecules, a "blooming" effect often occurs during the use of composite materials (ie Functional organic small molecule crystallization) will cause the composite material to lose its damping effect. How to use hindered phenol, hindered amine and polar rubber to form a high-performance damping material and effectively solve the "blooming" effect in the process of use will be A New Approach to Develop High-Performance Damping Materials Using Organic Hybrid Approach

Method used

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  • Damping vibration attenuation composite material containing nanocrystalline and manufacturing method thereof
  • Damping vibration attenuation composite material containing nanocrystalline and manufacturing method thereof
  • Damping vibration attenuation composite material containing nanocrystalline and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The mass percent of each component of the damping and vibration-reduction composite material containing nanocrystals adopts carboxylated nitrile rubber: AO4426:AO2246=54:36:10, and the preparation steps of the composite material are as follows:

[0032] The first step of mixing:

[0033] 1> Raise the temperature of the rollers on the double-roller plastic refining machine to 40°C and keep it basically stable;

[0034] 2>Add the cut carboxylated nitrile rubber into small pieces between the rollers to form a film through the surface temperature of the rollers and the shearing action between the double rollers;

[0035] 3> After weighing the film-forming carboxylated nitrile rubber, AO 4426 and AO 2246 according to the mass ratio of 54:36:10, first mix the carboxylated nitrile rubber film between the double rollers, and then slowly add AO 4426, Use a cutter for auxiliary mixing to make the components evenly mixed; then add AO 2246, also use a cutter for auxiliary mixing t...

Embodiment 2

[0044]Containing the mass percent of each component of the damping and vibration-reduction composite material of nanocrystals adopts the mass percent of each component and adopts carboxylated nitrile rubber: AO 4426:AO 2246=48:32:20, and the steps of the preparation of the composite material are the same as in Example 1 , the process is different from Example 1 in that the temperature is 45° C. and the time is 50 minutes when the raw materials are uniformly mixed on a double-roller extruding machine. The sample was hot-pressed under a flat vulcanizing machine at a temperature of 145°C. The preheating time was 20 minutes without pressure, the hot-pressing time was also 30 minutes, and the pressure was 15.5Mpa. Finally, the material was taken out and cooled in ice water. Thus, a damping and vibration-absorbing composite material B containing nanocrystals with a thickness of 1 mm was prepared, denoted by Composite B.

Embodiment 3

[0046] Containing the mass percent of each component of the damping and damping composite material of nano crystallites adopts the mass percent of each component and adopts carboxylated nitrile rubber: AO 4426:AO 2246=42:28:30, and the steps of the preparation of the composite material are the same as in Example 1 , the process is different from Example 1 in that the temperature is 50° C. and the time is 60 minutes when the raw materials are uniformly mixed on a double-roller extruding machine. The sample was hot-pressed under a flat vulcanizing machine at a temperature of 160°C. The preheating time was 30 minutes without pressure, the hot-pressing time was also 40 minutes, and the pressure was 16Mpa. Finally, the material was taken out and cooled in ice water. Thus, a damping and vibration-absorbing composite material C containing nanocrystals with a thickness of 1 mm was prepared, denoted by Composite C.

[0047] The damping performance of the composite material prepared in ...

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Abstract

The invention discloses a damping vibration attenuation composite material containing nanocrystalline. The damping vibration attenuation composite material containing nanocrystalline includes carboxyl nitrile rubber, hindered phenol type antioxidant AO4426 and hindered phenol type antioxidant AO2246. A preparation method of the damping vibration attenuation composite material includes two steps: mixing and hot-pressing forming. Carboxyl nitrile rubber containing carboxyl function groups with strong polarity is adopted as a base material, dual-polarity functional organic micromolecules are added into the base material, and then the ester type damping composite material based on carboxy nitrile rubber is formed by mixing the materials evenly and conducting hot-pressing forming. An ester compound, which is formed by a dehydration reaction between OH of different organic micromolecules and carboxyl-COOH of carboxyl nitrile rubber in hot-pressing forming, is used as a matrix of the composite material, reversible hydrogen bonds are formed between a C=H group and OH of hindered phenol and between the C=H group and OH of organic micromolecules, therefore, the damping performance is effectively improved, the phenomenon of frost spraying does not occur in the use process, and the service life of the damping material is effectively prolonged.

Description

[0001] Technical field: [0002] The invention belongs to the field of engineering materials, and it relates to a kind of carboxylated nitrile rubber (XNBR) as a base material, which utilizes the common hybridization of two functional organic small molecules to develop a damping and vibration-reducing composite material, more specifically, its It involves the use of carboxylated nitrile rubber to develop engineering materials with damping and vibration reduction properties. Through the joint hybridization of functional organic small molecules, organic small molecules form uniformly dispersed nanostructure crystals in the material to achieve high damping characteristics; It involves a function of small organic molecules to improve the damping performance of the composite material on the one hand, and on the other hand, it uses the principle that the "hydrogen bond" force of the microcrystals on the periphery of the surrounding microcrystals is similar to maintain the nanocrystals....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L13/00C08K5/13
CPCC08K5/13C08K2201/014
Inventor 姜生
Owner IANGSU COLLEGE OF ENG & TECH
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