CN110318348B - Sound barrier applying air bag type magnetorheological elastomer - Google Patents
Sound barrier applying air bag type magnetorheological elastomer Download PDFInfo
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- CN110318348B CN110318348B CN201910629676.XA CN201910629676A CN110318348B CN 110318348 B CN110318348 B CN 110318348B CN 201910629676 A CN201910629676 A CN 201910629676A CN 110318348 B CN110318348 B CN 110318348B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0856—Iron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/01—Magnetic additives
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Abstract
The invention relates to a sound barrier applying an air bag type magnetorheological elastomer, which comprises two supporting upright posts and a sound insulation main body arranged between the two supporting upright posts; the sound insulation main body comprises a first sound absorption sound insulation board, a second sound absorption sound insulation board and an air bag type magnetorheological elastomer, permanent magnet strips are arranged on the inner walls of the first sound absorption sound insulation board and the second sound absorption sound insulation board, and electromagnetic coils are wound outside the permanent magnet strips. The two support columns are internally provided with the sound intensity measuring instrument, the control module and the power supply module, the sound intensity measuring instrument collects noise and feeds the noise to the control module, when the decibel amplitude of the noise exceeds a threshold value, the power supply module is controlled to supply power to the electromagnetic coil, a magnetic field is applied to the air bag type magnetorheological elastomer, the mechanical property response of the air bag type magnetorheological elastomer is rapidly and reversibly accurately controlled, and the active sound absorption and noise reduction control effect is achieved. The air bag type magnetorheological elastomer sound absorption and noise reduction device is simple in structure, the good sound absorption and noise reduction performance of the air bag type magnetorheological elastomer is fully utilized, the sound absorption effect is improved, and the noise is further reduced.
Description
Technical Field
The invention belongs to the technical field of noise control, and relates to a sound barrier applying an air bag type magnetorheological elastomer.
Background
With the rapid development of economy and the continuous acceleration of urbanization process, the traffic modes of highways, railways, urban rail transit and the like are rapidly developed, the roads are inevitably required to pass through populated areas with concentrated population when being built, and the generated traffic noise brings certain interference to the work, life and study of residents nearby the roads. Aiming at traffic noise pollution, the control can be carried out from noise sources, propagation paths and sound receiving points, and the establishment of sound barriers along roads is one of the most effective means for treating traffic noise acknowledged at home and abroad. The noise reduction device has the advantages of good noise reduction effect performance, safe and reliable structure, economical material price, low installation cost, durability, long service life, harmonious landscape and elegant appearance.
The air bag type magnetorheological elastomer consists of a base material and soft magnetic particles, and has better sound absorption and noise reduction performance.
Disclosure of Invention
The invention aims to provide a sound barrier applying an air bag type magnetorheological elastomer, which is simple in structure and reasonable in design and can improve the sound absorption and noise reduction functions of the sound barrier.
The invention provides a sound barrier applying an air bag type magnetorheological elastomer, which comprises two supporting upright posts and a sound insulation main body arranged between the two supporting upright posts; the sound insulation main body comprises a first sound absorption sound insulation board, a second sound absorption sound insulation board and an air bag type magnetorheological elastomer, the first sound absorption sound insulation board and the second sound absorption sound insulation board are both horizontal corrugated plates, the air bag type magnetorheological elastomer is arranged between the first sound absorption sound insulation board and the second sound absorption sound insulation board, a plurality of rows of permanent magnet strips are arranged on the inner walls of the first sound absorption sound insulation board and the second sound absorption sound insulation board, which are in contact with the air bag type magnetorheological elastomer, along the horizontal direction, and a plurality of grooves are formed in the outer wall of one surface, facing the highway, of the first sound absorption sound insulation board;
the air bag type magnetorheological elastomer comprises the following components in percentage by weight: 100-150 parts of a rubber matrix, 600-700 parts of magnetic particles, 16-25 parts of a vulcanizing agent, 4-5 parts of a vulcanization accelerator and 130-220 parts of a filling material, wherein the filling material comprises 20-30 parts of a plasticizer, 30-50 parts of a dispersing agent, 50-60 parts of a compatibilizer, 10-20 parts of a reinforcing agent, 10-30 parts of a physical silica gel pore-forming agent and 10-30 parts of a waterproof agent; the reinforcing agent is fumed silica.
In the sound barrier applying the air bag type magnetorheological elastomer, the magnetic particles are micron-sized carbonyl iron powder and silicon steel powder in a ratio of 25:1, and the magnetic particles are selected to improve the magnetic permeability and reduce the eddy current loss on the premise of ensuring the saturation magnetization.
In the sound barrier applying the air bag type magnetorheological elastomer, the vulcanizing agent is selenium, tellurium, peroxide or sulfur, and the vulcanization accelerator is alkali metal oxide.
In the sound barrier applying the air bag type magnetorheological elastomer, the plasticizer is dimethyl silicone oil, the dispersing agent is methyl amyl alcohol or polyurethane, the compatibilizer is carboxylated carbon nanotubes or maleic anhydride, the physical silica gel pore-forming agent is YQ-100Y, YQ-505Y or ES100W, and the waterproof agent is fatty acid metal salt.
In the sound barrier applying the air bag type magnetorheological elastomer, the two sides of the supporting upright posts are provided with the slots, the cross sections of the slots are I-shaped, and the two ends of the sound insulation main body are respectively clamped in the slots of the two oppositely arranged supporting upright posts.
In the sound barrier using the airbag type magnetorheological elastomer, the corrugation on the horizontal corrugated plate is sinusoidal corrugation, triangular corrugation, rectangular corrugation or trapezoidal corrugation.
In the sound barrier using the air bag type magnetorheological elastomer, a plurality of grooves are arranged in an array.
The sound barrier applying the air bag type magnetorheological elastomer at least has the following beneficial effects: according to the invention, by arranging the magnetorheological elastomer, when an external magnetic field is applied to the air bag type magnetorheological elastomer, the mechanical property response can be rapidly, reversibly and accurately controlled, and the active sound absorption and noise reduction control function is achieved. The air bag type magnetorheological elastomer sound absorption and noise reduction device is simple in structure, the good sound absorption and noise reduction performance of the air bag type magnetorheological elastomer is fully utilized, the sound absorption effect is improved, and the noise is further reduced.
Drawings
FIG. 1 is a front view of a sound barrier employing a balloon-type magnetorheological elastomer of the present invention;
FIG. 2 is a cross-sectional view AA in FIG. 1;
fig. 3 is a BB cross-sectional view in fig. 1.
Detailed Description
The following provides a further detailed description of the sound barrier using the air bag type magnetorheological elastomer according to the present invention with reference to the drawings and the detailed description.
As shown in the figure, the sound barrier applying the air bag type magnetorheological elastomer comprises two supporting upright posts 1 and a sound insulation main body arranged between the two supporting upright posts. The sound insulation body comprises a first sound absorption and sound insulation plate 2, a second sound absorption and sound insulation plate 3 and an air bag type magnetorheological elastomer 6. First sound-absorbing acoustic baffle 2 and second sound-absorbing acoustic baffle 3 are horizontal corrugated plate, gasbag type magnetic current becomes elastomer 6 and sets up between first sound-absorbing acoustic baffle 2 and second sound-absorbing acoustic baffle 3, is equipped with multirow permanent magnet strip 4 along the horizontal direction on the inner wall that first sound-absorbing acoustic baffle 2 and second sound-absorbing acoustic baffle 3 and gasbag type magnetic current becomes elastomer 6 and contact, the permanent magnet strip outside is around being equipped with solenoid 7, first sound-absorbing acoustic baffle 2 is equipped with a plurality of recesses 5 towards the outer wall of highway one side. The two support columns 1 are internally provided with a sound intensity measuring instrument, a control module and a power supply module, ambient noise is collected by the sound intensity measuring instrument and fed back to the control module, and when the decibel amplitude of the noise exceeds a threshold value, the control module controls the power supply module to supply power to the electromagnetic coil 7, and a magnetic field is applied to the air bag type magnetorheological elastomer to adjust the damping of the air bag type magnetorheological elastomer. The mechanical property response of the sound absorption and noise reduction device can be rapidly and reversibly accurately controlled, and the sound absorption and noise reduction device plays a role in active sound absorption and noise reduction control. The air bag type magnetorheological elastomer sound absorption and noise reduction device is simple in structure, the good sound absorption and noise reduction performance of the air bag type magnetorheological elastomer is fully utilized, the sound absorption effect is improved, and the noise is further reduced.
The two sides of the supporting upright posts 1 are provided with slots, the cross sections of the slots are I-shaped, and the two ends of the sound insulation main body are respectively clamped in the slots of the two supporting upright posts 1 which are oppositely arranged.
The air bag type magnetorheological elastomer 6 comprises the following components in percentage by weight: 100-150 parts of a rubber matrix, 600-700 parts of magnetic particles, 16-25 parts of a vulcanizing agent, 4-5 parts of a vulcanization accelerator and 130-220 parts of a filling material, wherein the filling material comprises 20-30 parts of a plasticizer, 30-50 parts of a dispersing agent, 50-60 parts of a compatibilizer, 10-20 parts of a reinforcing agent, 10-30 parts of a physical silica gel pore-forming agent and 10-30 parts of a waterproof agent; the reinforcing agent is fumed silica.
When the magnetic particle is specifically implemented, the micron-sized carbonyl iron powder and the silicon steel powder are selected as the magnetic particles, the ratio of the micron-sized carbonyl iron powder to the silicon steel powder is 25:1, and the magnetic particles are selected to improve the magnetic permeability and reduce the eddy current loss on the premise of ensuring the saturation magnetization.
In specific implementation, the vulcanizing agent is selenium, tellurium, peroxide or sulfur, and the vulcanization accelerator is alkali metal oxide.
In specific implementation, the plasticizer is dimethyl silicone oil, the dispersing agent is methyl amyl alcohol or polyurethane, the compatibilizer is carboxylated carbon nanotubes or maleic anhydride, the physical silica gel pore-forming agent is YQ-100Y, YQ-505Y or ES100W, and the waterproof agent is fatty acid metal salt.
In specific implementation, the corrugation on the horizontal corrugated plate is sine corrugation, triangular corrugation, rectangular corrugation or trapezoidal corrugation. The plurality of grooves are arranged in an array.
In specific implementation, the air bag type magnetorheological elastomer is prepared by the following method:
step 1: weighing the following components in proportion: 100-150 parts of a rubber matrix, 600-700 parts of magnetic particles, 16-25 parts of a vulcanizing agent, 4-5 parts of a vulcanization accelerator and 130-220 parts of a filling material, wherein the filling material comprises 20-30 parts of a plasticizer, 30-50 parts of a dispersing agent, 50-60 parts of a compatibilizer, 10-20 parts of a reinforcing agent, 10-30 parts of a physical silica gel pore-forming agent and 10-30 parts of a waterproof agent;
step 2: putting the rubber matrix, the magnetic particles and all filling materials into a rubber mixing machine, mechanically and uniformly stirring for 20 minutes, placing the rubber mixing machine into a vacuum barrel at 80 ℃ for defoaming, and injecting the rubber mixing machine into a cylindrical aluminum mold;
and step 3: and (3) pouring a vulcanizing agent and a vulcanization accelerator into a mould to be vulcanized for 20 minutes at the temperature of 150 ℃, and simultaneously applying a magnetic field with the magnetic induction intensity of 0.4T to prepare the anisotropic air bag type magnetorheological elastomer.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, which is defined by the appended claims.
Claims (6)
1. A sound barrier applying an air bag type magnetorheological elastomer is characterized by comprising two supporting upright columns and a sound insulation main body arranged between the two supporting upright columns; the sound insulation main body comprises a first sound absorption sound insulation board, a second sound absorption sound insulation board and an air bag type magnetorheological elastomer, the first sound absorption sound insulation board and the second sound absorption sound insulation board are both horizontal corrugated plates, the air bag type magnetorheological elastomer is arranged between the first sound absorption sound insulation board and the second sound absorption sound insulation board, a plurality of rows of permanent magnet strips are arranged on the inner walls of the first sound absorption sound insulation board and the second sound absorption sound insulation board, which are respectively contacted with the air bag type magnetorheological elastomer, along the horizontal direction, electromagnetic coils are wound outside the permanent magnet strips, and a plurality of grooves are formed in the outer wall of one surface, facing the highway, of the first sound absorption sound insulation board; the two support columns are internally provided with a sound intensity measuring instrument, a control module and a power supply module, ambient noise is collected through the sound intensity measuring instrument and fed back to the control module, and when the decibel amplitude of the noise exceeds a threshold value, the control module controls the power supply module to supply power to the electromagnetic coil and applies a magnetic field to the air bag type magnetorheological elastomer to adjust the damping of the air bag type magnetorheological elastomer;
the air bag type magnetorheological elastomer comprises the following components in percentage by weight: 100-150 parts of a rubber matrix, 600-700 parts of magnetic particles, 16-25 parts of a vulcanizing agent, 4-5 parts of a vulcanization accelerator and 130-220 parts of a filling material, wherein the filling material comprises 20-30 parts of a plasticizer, 30-50 parts of a dispersing agent, 50-60 parts of a compatibilizer, 10-20 parts of a reinforcing agent, 10-30 parts of a physical silica gel pore-forming agent and 10-30 parts of a waterproof agent; the reinforcing agent is fumed silica;
the magnetic particles are micron-sized carbonyl iron powder and silicon steel powder in a ratio of 25:1, and the magnetic particles are selected to improve the magnetic permeability and reduce the eddy current loss on the premise of ensuring the saturation magnetization.
2. The sound barrier using the airbag-type magnetorheological elastomer of claim 1, wherein the vulcanizing agent is selenium, tellurium, peroxide or sulfur, and the vulcanization accelerator is an alkali metal oxide.
3. The sound barrier using the airbag-type magnetorheological elastomer as claimed in claim 1, wherein the plasticizer is dimethyl silicone oil, the dispersant is methyl amyl alcohol or polyurethane, the compatibilizer is carboxylated carbon nanotubes or maleic anhydride, the physical silica gel pore former is YQ-100Y, YQ-505Y or ES100W, and the water repellent is fatty acid metal salt.
4. The sound barrier using the airbag type magnetorheological elastomer as claimed in claim 1, wherein the two sides of the supporting columns are provided with slots, the cross section of the slots is in an i shape, and the two ends of the sound insulation main body are respectively clamped in the slots of the two supporting columns which are oppositely arranged.
5. The sound barrier using the airbag-type magnetorheological elastomer of claim 1, wherein the corrugations of the horizontal corrugated plates are sinusoidal corrugations, triangular corrugations, rectangular corrugations or trapezoidal corrugations.
6. The sound barrier utilizing a gas bladder type magnetorheological elastomer of claim 1, wherein the plurality of grooves are arranged in an array.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910629676.XA CN110318348B (en) | 2019-07-12 | 2019-07-12 | Sound barrier applying air bag type magnetorheological elastomer |
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| CN201910629676.XA CN110318348B (en) | 2019-07-12 | 2019-07-12 | Sound barrier applying air bag type magnetorheological elastomer |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004088897A (en) * | 2002-08-27 | 2004-03-18 | Mn Engineering Kk | Power generating mechanism using vibration of sound-proof wall |
| CN2630309Y (en) * | 2003-08-22 | 2004-08-04 | 天津市莱茵环保新技术开发有限公司 | Acoustic shielding junction connection structure |
| CN101513924A (en) * | 2009-04-03 | 2009-08-26 | 哈尔滨工程大学 | Magnetorheological elastomer intelligent vibration absorber used for ships |
| CN102829112A (en) * | 2012-09-21 | 2012-12-19 | 重庆大学 | Porous magnetorheological elastomer and buffer device |
| CN207989104U (en) * | 2018-03-19 | 2018-10-19 | 浙江师范大学 | A kind of dynamic sound-absorbing muffler of magnetic rheology elastic body active |
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2019
- 2019-07-12 CN CN201910629676.XA patent/CN110318348B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004088897A (en) * | 2002-08-27 | 2004-03-18 | Mn Engineering Kk | Power generating mechanism using vibration of sound-proof wall |
| CN2630309Y (en) * | 2003-08-22 | 2004-08-04 | 天津市莱茵环保新技术开发有限公司 | Acoustic shielding junction connection structure |
| CN101513924A (en) * | 2009-04-03 | 2009-08-26 | 哈尔滨工程大学 | Magnetorheological elastomer intelligent vibration absorber used for ships |
| CN102829112A (en) * | 2012-09-21 | 2012-12-19 | 重庆大学 | Porous magnetorheological elastomer and buffer device |
| CN207989104U (en) * | 2018-03-19 | 2018-10-19 | 浙江师范大学 | A kind of dynamic sound-absorbing muffler of magnetic rheology elastic body active |
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