High-sound-absorption composite silicone rubber and preparation method thereof

A composite silicon rubber, high sound absorption technology, applied in the field of rubber, can solve the problem of inability to absorb sound waves, achieve the effect of improving sound absorption effect and reducing sound energy

Inactive Publication Date: 2020-05-19
陈淑英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem mainly solved by the present invention: Aiming at the problem that traditional silicone rubber cannot absorb sound waves, a

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In parts by weight, weigh 6 parts of ethyl orthosilicate, 1 part of cetyltrimethylammonium bromide, and 60 parts of deionized water, and add cetyltrimethylammonium bromide to deionized In water, stir at 400 r / min for 2 hours at room temperature to obtain an aqueous solution of cetyltrimethylammonium bromide, add dropwise 1% aqueous ammonia to adjust the pH of the aqueous solution of cetyltrimethylammonium bromide to 9, Add tetraethyl orthosilicate, stir at 600r / min at room temperature for 20min to obtain a mixed solution, place the mixed solution in a water bath at 40°C for 40h, filter, wash the filter residue 3 times with deionized water, and place at 60°C Drying for 10 hours under certain conditions to obtain a dry solid, which was ground into a powder, placed in a muffle furnace, and calcined at a temperature of 500 ° C for 4 hours to obtain a mesoporous silica powder with an average particle size of 40 mm;

[0028] Then weigh 100 parts of methyl vinyl silicone rubbe...

Embodiment 2

[0030] In parts by weight, weigh 6 parts of ethyl orthosilicate, 1 part of cetyltrimethylammonium bromide, and 60 parts of deionized water, and add cetyltrimethylammonium bromide to deionized In water, stir at 400 r / min for 2 hours at room temperature to obtain an aqueous solution of cetyltrimethylammonium bromide, add dropwise 1% aqueous ammonia to adjust the pH of the aqueous solution of cetyltrimethylammonium bromide to 9, Add tetraethyl orthosilicate, stir at 600r / min at room temperature for 20min to obtain a mixed solution, place the mixed solution in a water bath at 40°C for 40h, filter, wash the filter residue 3 times with deionized water, and place at 60°C Drying for 10 hours under certain conditions to obtain a dry solid, which was ground into a powder, placed in a muffle furnace, and calcined at a temperature of 500 ° C for 4 hours to obtain a mesoporous silica powder with an average particle size of 40 mm;

[0031] Then weigh 120 parts of methyl vinyl silicone rubbe...

Embodiment 3

[0033] In parts by weight, weigh 12 parts of ethyl orthosilicate, 3 parts of cetyltrimethylammonium bromide, and 120 parts of deionized water, add cetyltrimethylammonium bromide to deionized In water, stir at 500 r / min for 4 hours at room temperature to obtain an aqueous solution of cetyltrimethylammonium bromide, add dropwise 1% aqueous ammonia to adjust the pH of the aqueous solution of cetyltrimethylammonium bromide to 10, Add tetraethyl orthosilicate, stir at 600-800r / min at room temperature for 40 minutes to obtain a mixed solution, put the mixed solution in a water bath at 50°C for 48 hours, filter, wash the filter residue with deionized water for 5 times, and place in Drying at 80°C for 20 hours to obtain a dry solid, which was ground into a powder, placed in a muffle furnace, and calcined at a temperature of 600°C for 6 hours to obtain a mesoporous silica powder with an average particle size of 80mm;

[0034]Then weigh 100 parts of methyl vinyl silicone rubber, 0.6 par...

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Abstract

The invention relates to high-sound-absorption composite silicone rubber and a preparation method thereof, and belongs to the technical field of rubber. Silicone rubber and butyl rubber are used as raw materials; the high-sound-absorption composite silicon rubber is prepared; molecular chain motion forms in silicone rubber and butyl rubber molecules are various, relaxation time spectral peaks arewide, sound waves with wide frequency bands can be absorbed, when the sound waves enter the surface of the rubber, most part of the sound waves enter the rubber to be transmitted, sound energy is absorbed by the rubber and converted into heat energy to be dissipated, and therefore the sound absorption effect is achieved. The high-sound-absorption composite silicone rubber is prepared by adding themesoporous silica, and the mesoporous silica has a large number of fine pores and can dissipate sound energy consumption, so that part of sound energy is further reduced, and the sound absorption effect of the rubber is improved.

Description

technical field [0001] The invention relates to a high sound-absorbing composite silicone rubber and a preparation method thereof, belonging to the technical field of rubber. Background technique [0002] Silicone rubber is a polymer whose main chain is -Si-O- as the structural unit and the side chain is an organic group. It is an important silicone product. Due to the unique molecular structure of silicone polymers, silicone rubber has some properties different from organic rubber, such as high and low temperature resistance, ozone resistance, weather resistance and electrical insulation. Due to these functionalities, silicone rubber is widely used in the fields of national defense, military industry, and security. However, the sound absorption performance of silicone rubber is not very high, and it cannot absorb sound waves, reduce target sonar signals, and avoid hostile detection equipment. Contents of the invention [0003] The technical problem mainly solved by the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L23/22C08K7/26C08K5/09
CPCC08K2201/003C08L83/04C08L23/22C08K7/26C08K5/09
Inventor 陈淑英
Owner 陈淑英
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