Modified diatomite/chlorinated butyl rubber damping composite and preparation method thereof

A technology of chlorinated butyl rubber and damping composite material is applied in the field of damping materials to achieve the effects of simple preparation process, wide application range and improved composite performance

Active Publication Date: 2017-06-09
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the above-mentioned problems existing in the prior art, the purpose of this invention is to provide a kind of modified diatomite / chlorinated butyl rubber damping composite material and preparation method thereof, to overcome the defect of existing chlorinated butyl rubber material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Preparation of modified diatomite:

[0045] a) roasting 100 g of diatomite at 300° C. for 5 hours to obtain roasted diatomite, and passing the roasted diatomite through a 100-mesh sieve to obtain pretreated diatomite;

[0046] b) Disperse 8 g of pretreated diatomite in 100 mL of ethanol aqueous solution (volume ratio of ethanol: water is 1:1), stir to obtain a mixed solution, add 100 mL of acetic acid to adjust the pH value of the solution to 4, and then acidify at 70 ° C React for 4 hours, the stirring rate is 200r / min;

[0047] c) After the acidification reaction is completed, slowly add 10 g of silane coupling agent KH560 dropwise to the reaction solution for several times, and conduct the coupling reaction at 70° C. for 4 hours, and the stirring rate is 300 r / min;

[0048] d) After the coupling reaction is over, add 10 g of antioxidant 245 to the reaction solution, react at 70°C for 20 hours, and the stirring rate is 300r / min; end the reaction, separate the soli...

Embodiment 2

[0057] 1. Preparation of modified diatomite:

[0058] a) Roasting 150 g of diatomite at 450°C for 4 hours to obtain calcined diatomite, passing the calcined diatomite through a 300-mesh sieve to obtain pretreated diatomite;

[0059] b) Disperse 14g of pretreated diatomaceous earth in 200mL of ethanol aqueous solution (volume ratio of ethanol: water is 1:1), stir to obtain a mixed solution, add 150mL of acetic acid to adjust the pH of the solution to 5, and then acidify at 80°C React for 2.5 hours, the stirring rate is 300r / min;

[0060] c) After the acidification reaction is finished, slowly add 20 g of silane coupling agent KH560 dropwise to the reaction solution for several times, and perform a coupling reaction at 80 for 3 hours, with a stirring rate of 400 r / min;

[0061] d) After the coupling reaction is completed, add 20 g of antioxidant 245 to the reaction solution, and react at 80° C. for 16 hours, with a stirring rate of 400 r / min; end the reaction, separate the soli...

Embodiment 3

[0070] 1. Preparation of modified diatomite:

[0071] a) Roasting 200 g of diatomite at 600° C. for 3 hours to obtain roasted diatomite, passing the roasted diatomite through a 500-mesh sieve to obtain pretreated diatomite;

[0072] b) Disperse 20g of pretreated diatomite in 300mL of ethanol aqueous solution (volume ratio of ethanol: water is 1:1), stir to obtain a mixed solution, add 200mL of acetic acid to adjust the pH of the solution to 6, and then acidify at 90°C React for 1 hour, the stirring rate is 400r / min;

[0073] c) After the acidification reaction is finished, slowly add 30 g of silane coupling agent KH560 dropwise to the reaction solution for several times, and perform a coupling reaction at 90 for 2 hours, with a stirring rate of 500 r / min;

[0074] d) After the coupling reaction is finished, add 30 g of antioxidant 245 to the reaction solution, react at 90°C for 12 hours, and the stirring rate is 400r / min; finish the reaction, separate the solid and liquid by ...

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PUM

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Abstract

The invention discloses modified diatomite / chlorinated butyl rubber damping composite and a preparation method thereof; the modified diatomite / chlorinated butyl rubber damping composite is prepared by mixing, by weight, 100 parts of chlorinated butyl rubber, 1-3 parts of a vulcanizing agent, 1-3 parts of an accelerator, 2-4 parts of stearic acid, 1-2 parts of nano zinc oxide, 2-4 parts of an antiaging agent, 1-3 parts of light weight magnesia, and 2.5-10 parts of modified diatomite; the modified diatomite is prepared by modifying sintered diatomite with hindered phenol. The modified diatomite is prepared by modifying diatomite with hindered phenol and is added to chlorinated butyl rubber, and the damping property, mechanical properties and heat conductivity of the chlorinated butyl rubber can be improved significantly; the modified diatomite / chlorinated butyl rubber damping composite has high practical value.

Description

technical field [0001] The invention relates to a chlorinated butyl rubber damping material and a preparation method thereof, in particular to a modified diatomite / chlorinated butyl rubber damping composite material and a preparation method thereof, belonging to the technical field of damping materials. Background technique [0002] With the development of science and technology and the progress of society, there are more and more mechanized production. At the same time, with the production and operation of large machines, vibration and noise cannot be avoided. Vibration and noise not only seriously affect and destroy the reliability and stability of machine operation, but also pollute the environment, especially people's lives. Damping materials can not only absorb the mechanical properties of vibration mechanical energy, but also convert mechanical energy into heat energy and consume it. Therefore, using this characteristic of the damping material can reduce the resonanc...

Claims

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Application Information

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IPC IPC(8): C08L23/28C08K13/06C08K9/00C08K9/06C08K3/34C08K3/22
CPCC08K3/22C08K3/34C08K9/00C08K9/06C08K13/06C08K2003/222C08K2003/2296C08K2201/003C08K2201/011C08L23/283
Inventor 杨思远王锦成南子婧张晨阳丁瑶珂
Owner SHANGHAI UNIV OF ENG SCI
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