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Material with effects of insulating sound and reducing noise and preparation method of material

A technology of sound insulation and noise reduction, silicone rubber, applied in the field of functional materials, to achieve the effect of simple manufacturing process, simple process and reduced production cost

Inactive Publication Date: 2017-02-01
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention aims at the problem of low-frequency noise in high-voltage substations, and proposes a sound insulation and noise reduction material and its preparation method

Method used

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  • Material with effects of insulating sound and reducing noise and preparation method of material

Examples

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Effect test

preparation example Construction

[0028] In the embodiment of the present invention, the preparation method of the silicone rubber cracking product includes: adding sulfuric acid solution to the silicone rubber for digestion. When the silicone rubber was digested at 130°C for 20 minutes in a microwave digestion tank, the silica gel was basically cracked completely, and the resulting cracked product was mainly a mixture of dimethylepoxysilane [(CH 3 ) 2 SiO] n (n = 4-20) and its cracking residue. Wherein, the mass percent concentration of the sulfuric acid solution is 20-40%; the silicone rubber is the shed of the decommissioned high-voltage insulator after being sheared and peeled off, and is then washed with acid, alkali, and water under ultrasonic conditions. Wash for about 15 minutes, wash away the stains on the surface of the shed, and then dry it at 105°C. After it is first crushed into crumbs by a shear crusher, it is placed in a grinder and crushed at 3600 rpm for 5 minutes. , to obtain 10-200 mesh si...

Embodiment 1

[0038] The present invention is applied to the sound insulation and noise reduction material of low frequency noise, and its preparation method is as follows:

[0039] (1) The silicone rubber sheds of decommissioned high-voltage insulators that have been sheared and peeled off are ultrasonically cleaned with clean water for 15 minutes to remove the surface stains and then dried at 105°C. After being crushed by a shearing crusher, they are crushed in a pulverizer for 5 minutes. After passing through a vibrating sieve for 10 minutes, take a 40-mesh sieve to get the silicon rubber powder under the sieve.

[0040] (2) Weigh 10g of the insulator silicone rubber powder described in (1), add 8ml of sulfuric acid with a mass concentration of 30%, and digest it in a microwave digestion tank at 130°C for 20 minutes to obtain the cracked product, mainly dimethylcyclo Oxydisilane (CH 3 ) 2SiO]n (n=4-20) mixture and pyrolysis residue, set aside;

[0041] (3) Preparation of polycarbonate...

Embodiment 2

[0046] (1) Weigh 200g of the silicon rubber powder in Example 1, add 150ml of sulfuric acid with a mass concentration of 30%, and digest the cracked product obtained in a microwave digestion tank at 130°C for 20 minutes, mainly dimethyloxidisilane (CH 3 ) 2 SiO]n (n=4-20) mixture and pyrolysis residue, set aside;

[0047] (2) Preparation of polycarbonate: get 40.0g polycarbonate and heat to 180°C to obtain polycarbonate in molten state, set aside;

[0048] (3) Weigh 15.0 g of aluminum oxide and 13.0 g of silicon oxide to uniformly form a powder with a particle size of 200-300 microns.

[0049] (4) Preparation of composite slurry: add the decommissioned insulator silicone rubber cracking product, silicon oxide and aluminum oxide to the polycarbonate obtained in step 1) according to the above weight ratio, keep warm and stir under the temperature condition of 110 ° C Homogenize for 5 minutes to obtain a composite slurry;

[0050] (5) Preparation of sound insulation and noise...

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Abstract

The invention belongs to the field of functional materials, and in particular relates to a material with the effects of insulating sound and reducing noise and a preparation method of the material. The invention provides the material with the effects of insulating sound and reducing noise. The material is prepared from a silicone rubber pyrolysis product, polycarbonate, a vulcanizing agent, silicon oxide, aluminum oxide, a foaming agent and a foaming aid; the material is loose and porous, can be used for effectively absorbing and scattering sound waves, has the effects of cushioning impact, insulating sound, eliminating noise and the like, and can be effectively applied to sound insulation and noise reduction of fields such as industry, military affairs, civil buildings and the like. The invention also provides the preparation method of the material with the effects of insulating sound and reducing noise. The method is simple and convenient in manufacturing technique and simple in process. According to the material and the preparation method disclosed by the invention, waste silicone rubber in waste insulator angle leftovers is used as a raw material of the silicone rubber pyrolysis product; no rare materials are used; the adopted raw materials are low in cost; besides, the problem of a way out for the waste silicone rubber is well solved, wastes are changed into valuables, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of functional materials, and in particular relates to a sound insulation and noise reduction material and a preparation method thereof. Background technique [0002] In recent years, with the advancement of science and technology, social and economic development, and the improvement of living standards, urban electricity consumption has increased year by year. In order to further improve the reliability of power supply and ensure the production and life of the people, many substations and Transmission lines have improved the living standards of urban people. However, the low-frequency noise of high-voltage substations is also difficult to eliminate due to its special acoustic performance. The noise of some substations has different degrees of impact on the lives of surrounding residents, and the resulting disputes are increasing year by year. Therefore, it is an urgent technical problem for those skilled in the art t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K13/02C08K3/36C08K5/549C08K3/22C08J9/10
CPCC08K13/02C08J9/103C08J2203/04C08J2369/00C08K3/22C08K3/36C08K5/549C08K2003/2227C08L69/00
Inventor 张凯李丽周永言李华亮赵宁
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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