CN203593981U - High sound-absorption element for traffic sound barrier - Google Patents
High sound-absorption element for traffic sound barrier Download PDFInfo
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- CN203593981U CN203593981U CN201320593643.2U CN201320593643U CN203593981U CN 203593981 U CN203593981 U CN 203593981U CN 201320593643 U CN201320593643 U CN 201320593643U CN 203593981 U CN203593981 U CN 203593981U
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- sound barrier
- absorption element
- sound
- microporous membrane
- high acoustic
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Abstract
The utility model discloses a high sound-absorption element for a traffic sound barrier. The surface of a porous sound absorbing material layer is coated with a coating layer in a sealing manner, the coating and joint parts are subjected to sealing and connection, and the coating layer is an expanded polytetrafluoroethylene micropore thin layer or an improved thin layer of an expanded polytetrafluoroethylene micropore thin film. By adopting such a structure, the high sound-absorption element can significantly reduce noises, and has sound insulation and sound absorption functions, as well as is longer in service life, environmentally friendly, antiflaming, and moistureproofing, and is high in plasticity.
Description
Technical field
The utility model relates to the high acoustic absorption element of a kind of traffic sound barrier based on the coated eptfe film in surface and modified film thereof.
Background technology
The design of sound barrier has considered that high ferro is overhead comparatively fully, the wind of speedway, urban light rail, subway carries, shock safety and the round-the-clock outdoor Anticorrosion of vehicular traffic.The generous life-span of its good looking appearance is long, is the general sound insulation and noise reducing facility in modern city.Sound wave, in communication process, while running into sound barrier, will reflect, transmission and three kinds of phenomenons of diffraction.Sound barrier height is between 1m-5m, cover effective zone leveling noise reduction and reach 10-15dB (A) (125Hz-40000Hz, third-octave), in the time that the speed of bullet train 250-350KM/H is advanced, or the large flow automobile of high speed sky way is when current, the noise source of high ferro or subway or super expressway will reach 100dB left and right, these noises are the influence of noise that still has 85dB in the scope apart from noise source 100m after sound barrier sound insulation and noise reduction, does not reach 60-75dB and be suitable for the ambient noise limit value of Working Life.
And the various organic or inorganic fiber and its products of fibrous aggregate structure and the open-celled foam plastics of loose structure and expanded perlite product and inside have a large amount of, interpenetrate, outwardly open micropore glass cotton and mineral wool or the not climatic influences of resistance to outdoor environment such as various sound absorbing plates or sound absorbing member of making take this type of material as primary raw material, especially outdoor ultraviolet irradiation makes above-mentioned material accelerated ageing, application life is short, aging one-tenth be full of cracks or powdered after 3 years, lose sound absorption function and can affect environmental beauty, limit the application of above-mentioned material on Noise Barrier Works.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of traffic sound barrier high acoustic absorption element, can make traffic sound barrier not only there is sound insulation function and also there is better sound absorption function, make that high ferro is overhead, the noise of speedway, urban light rail, subway significantly reduces, and reaches 60 ~ 75dB and be suitable for the ambient noise limit value of Working Life.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of traffic sound barrier high acoustic absorption element is provided, it is characterized in that, comprise: porous absorption material layer and clad, porous absorption material layer face seal is coated described clad, and described clad is the modified film layer of expanded PTFE microporous membrane layer or expanded PTFE microporous membrane.
In preferred embodiment of the utility model, the fiber and its products that the material of porous absorption material layer is fibrous aggregate structure, the foamed plastics of loose structure, expanded perlite product, micropore glass cotton, mineral wool.
In preferred embodiment of the utility model, this high acoustic absorption element is located in the surface of sound barrier panel or the interlayer of porous screen baffle.
In preferred embodiment of the utility model, the modified film layer of expanded PTFE microporous membrane is to be coated with and to be more than or equal to one deck through refusing oil and refuse the coating of water modification in the microporous membrane layer surface modification of expanded PTFE.
In preferred embodiment of the utility model, the modified film layer of expanded PTFE microporous membrane is the coating that is all coated with described process and refuses oil and refuse water modification at the positive and negative of the microporous membrane layer of expanded PTFE.
The beneficial effects of the utility model are:
1) traffic sound barrier of the present utility model can reduce noise significantly with high acoustic absorption element, is combined application with existing traffic sound barrier technology, makes traffic sound barrier not only have sound insulation function and also has better sound absorption function.Make that high ferro is overhead, the noise of speedway, urban light rail, subway significantly reduces, and reaches 60 ~ 75dB and be suitable for the ambient noise limit value of Working Life.
2) traffic sound barrier is greater than the application life of existing sound barrier with the resistance to open air of high acoustic absorption element and ultraviolet ray ageing life-span.
3) environmental protection: traffic sound barrier high acoustic absorption element, makes the coated various organic or inorganic fiber and its products of fibrous aggregate structure wherein and the open-celled foam plastics of loose structure and expanded perlite product and inner various sound absorbing plates or the sound absorbing member etc. that has a large amount of, that interpenetrate, outwardly open micropore glass cotton and mineral wool or make take this type of material as primary raw material free from environmental pollution.
4) anti-flammability: high acoustic absorption element good flame resistance for traffic sound barrier.
5) protection against the tide: high acoustic absorption element good waterproof performance for traffic sound barrier, do not seep water, without mouldy, bacteria breed, the generation of rotten and bad smell, guarantees long-time stability.
6) plasticity: traffic sound barrier is easy with high acoustic absorption element operation, applicable to different size or tight quarters, provides greater flexibility to product design, very light in weight, is easy to install.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing, wherein:
Fig. 1 is the structural representation of the utility model traffic sound barrier high acoustic absorption element one preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1, porous absorption material layer, 2, clad.
The specific embodiment
To the technical scheme in the utility model embodiment be clearly and completely described below, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the utility model embodiment comprises:
A kind of traffic sound barrier high acoustic absorption element, comprise: porous absorption material layer 1 and clad 2, porous absorption material layer 1 face seal is coated described clad 2, and carrying out encapsulation process connection in coated and joint, described clad 2 is the modified film layer of expanded PTFE microporous membrane layer or expanded PTFE microporous membrane.
Eptfe film: polytetrafluoroethylene (PTFE) Waterproof Breathable microporous barrier is made through biaxial tension through special process, thick approximately 10～200 μ m, porosity is 80～96%, average pore size is 0.01～25 μ m, be about the 1/5000-1/20000 of water droplet, than water vapour molecule large 700 times, film surface can reach tens outwardly open micropores per square inch, and each micro-pore diameter is than the large hundred times of air molecule.Utilize this microcellular structure can reach outstanding Waterproof Breathable function, this hole is extremely tiny in addition and longitudinal irregular bending staggered floor is arranged, and material internal has a large amount of, that interpenetrate, outwardly open micropore has the function of absorption noise.
The eptfe film climate performance of resistance to outdoor environment is good, there is good heat stability and broad serviceability temperature, can be at the low temperature of subzero 150 ℃ to continuous operation under the high temperature of 260 ℃ above freezing, fusing point, up to 327 ℃, has noninflammability, and excellent chemical stability, antiacid, alkalescence is good, can serve as many high-corrosion mediums, friction factor is little, and hydrophobicity is strong, the ultraviolet irradiation in resistance to open air can experience more than 20 year not aging.
The material of porous absorption material layer 1 is the fiber and its products of fibrous aggregate structure, foamed plastics, expanded perlite product, micropore glass cotton, the mineral wool of loose structure or various sound absorbing plates or the sound absorbing member of making take this type of material as primary raw material.Coated and joint is carried out encapsulation process and is connected top gem of a girdle-pendant seam, bonding or welding, and object is to guarantee not ooze rainwater.
The sound absorbing mechanism of porous absorption material is in the time that sound wave incides porous material, causes the air vibration in hole.Due to the viscosity resistance of friction and air, make a part of acoustic energy be transformed into heat energy; In addition, the heat conduction between the air in hole and hole wall, fiber, also can cause heat waste, makes sound energy attenuation reduce noise decibel value.
This high acoustic absorption element is located in the surface of sound barrier panel or the interlayer of porous screen baffle, makes traffic sound barrier not only have sound insulation function and also has better sound absorption function.Make that high ferro is overhead, the noise of speedway, urban light rail, subway significantly reduces, and reaches 60 ~ 75dB and be suitable for the ambient noise limit value of Working Life.
Embodiment 1: the preparation method of high acoustic absorption element for a kind of traffic sound barrier, comprises the following steps:
A) before porous absorption material and expanded PTFE microporous membrane do technique, material is prepared;
B) porous absorption material is carried out to cutting, after cutting completes, on porous absorption material, lay bonding adhesive tape according to process requirements;
C) expanded PTFE microporous membrane is coated on porous absorption material surface;
D) carry out encapsulation process connection in coated and joint, connected mode comprises top gem of a girdle-pendant seam, bonding or welding;
E) complete after above-mentioned steps, element is tested, pack after the assay was approved.
Described porous absorption material is the various organic or inorganic fiber and its products of fibrous aggregate structure and the open-celled foam plastics of loose structure and expanded perlite product and inner various sound absorbing plates or the sound absorbing member etc. that has a large amount of, that interpenetrate, outwardly open micropore glass cotton and mineral wool or make take this type of material as primary raw material.
Wherein, the preparation technology of expanded PTFE microporous membrane comprises the following steps:
A) polytetrafluoroethyldispersion dispersion resin mixes in proportion with liquid extrusion aid;
B) after having mixed, be pressed into cylinder blank, and by rolling process, cylinder blank laminated, carried out rolling;
C) unreel again, heat up and slough the extrusion aid of thin slice by drying tunnel;
D) after extrusion aid is sloughed, thin slice is stretched as to microfibre pore structure, after thermal finalization, then carries out rolling;
E) complete after above-mentioned operation, test, pack, finally make expanded PTFE microporous membrane.
Embodiment 2: the preparation method of high acoustic absorption element for a kind of traffic sound barrier, comprises the following steps:
A) before the modified film of porous absorption material and expanded PTFE microporous membrane does technique, material is prepared;
B) porous absorption material is carried out to cutting, after cutting completes, on porous absorption material, lay bonding adhesive tape according to process requirements;
C) modified film of expanded PTFE microporous membrane is coated on porous absorption material surface;
D) carry out encapsulation process connection in coated and joint, connected mode comprises top gem of a girdle-pendant seam, bonding or welding;
E) complete after above-mentioned steps, element is tested, pack after the assay was approved.
Described porous absorption material is the various organic or inorganic fiber and its products of fibrous aggregate structure and the open-celled foam plastics of loose structure and expanded perlite product and inner various sound absorbing plates or the sound absorbing member etc. that has a large amount of, that interpenetrate, outwardly open micropore glass cotton and mineral wool or make take this type of material as primary raw material.
The modified film of expanded PTFE microporous membrane is to be coated with and to be more than or equal to one deck through refusing oil and refuse the coating of water modification in the microporous membrane surface modification of expanded PTFE, or is all coated with described process and refuses oil and refuse the coating of water modification at the positive and negative of the microporous membrane of described expanded PTFE.
The processing technology that expanded PTFE microporous membrane waterproof is refused oily surface modification treatment is that first expanded PTFE microporous membrane unreels, waterproof finishing agent coating film surface, carry out again low temperature drying, to refuse oil-treatment agent coating film surface, again carry out low temperature drying, after the assay was approved, rolling stores finally.
The beneficial effects of the utility model are:
1) traffic sound barrier of the present utility model can reduce noise significantly with high acoustic absorption element, is combined application with existing traffic sound barrier technology, makes traffic sound barrier not only have sound insulation function and also has better sound absorption function.Make that high ferro is overhead, the noise of speedway, urban light rail, subway significantly reduces, and reaches 60 ~ 75dB and be suitable for the ambient noise limit value of Working Life.
2) traffic sound barrier is greater than the application life of existing sound barrier with the resistance to open air of high acoustic absorption element and ultraviolet ray ageing life-span.
3) environmental protection: traffic sound barrier high acoustic absorption element, makes the coated various organic or inorganic fiber and its products of fibrous aggregate structure wherein and the open-celled foam plastics of loose structure and expanded perlite product and inner various sound absorbing plates or the sound absorbing member etc. that has a large amount of, that interpenetrate, outwardly open micropore glass cotton and mineral wool or make take this type of material as primary raw material free from environmental pollution.
4) anti-flammability: high acoustic absorption element good flame resistance for traffic sound barrier.
5) protection against the tide: high acoustic absorption element good waterproof performance for traffic sound barrier, do not seep water, without mouldy, bacteria breed, the generation of rotten and bad smell, guarantees long-time stability.
6) plasticity: traffic sound barrier is easy with high acoustic absorption element operation, applicable to different size or tight quarters, provides greater flexibility to product design, very light in weight, is easy to install.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a traffic sound barrier high acoustic absorption element, it is characterized in that, comprise: porous absorption material layer and clad, porous absorption material layer face seal is coated described clad, and described clad is the modified film layer of expanded PTFE microporous membrane layer or expanded PTFE microporous membrane.
2. traffic sound barrier high acoustic absorption element according to claim 1, it is characterized in that the fiber and its products that the material of porous absorption material layer is fibrous aggregate structure, the foamed plastics of loose structure, expanded perlite product, micropore glass cotton, mineral wool.
3. traffic sound barrier high acoustic absorption element according to claim 1, is characterized in that, this high acoustic absorption element is located in the surface of sound barrier panel or the interlayer of porous screen baffle.
4. traffic sound barrier high acoustic absorption element according to claim 1, it is characterized in that, the modified film layer of expanded PTFE microporous membrane is to be coated with and to be more than or equal to one deck through refusing oil and refuse the coating of water modification in the microporous membrane layer surface modification of expanded PTFE.
5. traffic sound barrier high acoustic absorption element according to claim 1, it is characterized in that, the modified film layer of expanded PTFE microporous membrane is the coating that is all coated with described process and refuses oil and refuse water modification at the positive and negative of the microporous membrane layer of expanded PTFE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320593643.2U CN203593981U (en) | 2013-09-25 | 2013-09-25 | High sound-absorption element for traffic sound barrier |
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| CN201320593643.2U CN203593981U (en) | 2013-09-25 | 2013-09-25 | High sound-absorption element for traffic sound barrier |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104175622A (en) * | 2014-08-14 | 2014-12-03 | 上海华特汽车配件有限公司 | Porous noise reduction product and preparation method and use thereof |
| WO2015043195A1 (en) * | 2013-09-25 | 2015-04-02 | 常州市泛亚微透科技有限公司 | Combined material with high sound absorption for traffic acoustic barrier and preparation method therefor |
| CN105835429A (en) * | 2016-03-09 | 2016-08-10 | 江苏泛亚微透科技股份有限公司 | Microporous membrane-polyurethane foam compounded medium-and-low-frequency high-sound-absorption noise-reduction material and preparation method thereof |
| CN105835503A (en) * | 2016-02-15 | 2016-08-10 | 江苏泛亚微透科技股份有限公司 | Expanded polytetrafluoroethylene film-polyurethane foam surface composite full-band strong sound-absorption sheet and preparation method thereof |
| CN108729368A (en) * | 2018-06-08 | 2018-11-02 | 四川双铁科技有限公司 | A kind of enhancing light lath and preparation method thereof |
| RU204666U1 (en) * | 2021-03-31 | 2021-06-03 | Общество С Ограниченной Ответственностью "Информационные Технологии " (Ооо "Инфотех") | SCREEN FOR NOISE PROTECTION OF THE WAGON MODE OF SORTING SLIDER |
-
2013
- 2013-09-25 CN CN201320593643.2U patent/CN203593981U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015043195A1 (en) * | 2013-09-25 | 2015-04-02 | 常州市泛亚微透科技有限公司 | Combined material with high sound absorption for traffic acoustic barrier and preparation method therefor |
| CN104175622A (en) * | 2014-08-14 | 2014-12-03 | 上海华特汽车配件有限公司 | Porous noise reduction product and preparation method and use thereof |
| CN105835503A (en) * | 2016-02-15 | 2016-08-10 | 江苏泛亚微透科技股份有限公司 | Expanded polytetrafluoroethylene film-polyurethane foam surface composite full-band strong sound-absorption sheet and preparation method thereof |
| CN105835429A (en) * | 2016-03-09 | 2016-08-10 | 江苏泛亚微透科技股份有限公司 | Microporous membrane-polyurethane foam compounded medium-and-low-frequency high-sound-absorption noise-reduction material and preparation method thereof |
| CN108729368A (en) * | 2018-06-08 | 2018-11-02 | 四川双铁科技有限公司 | A kind of enhancing light lath and preparation method thereof |
| RU204666U1 (en) * | 2021-03-31 | 2021-06-03 | Общество С Ограниченной Ответственностью "Информационные Технологии " (Ооо "Инфотех") | SCREEN FOR NOISE PROTECTION OF THE WAGON MODE OF SORTING SLIDER |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No. 28-8 Sakamoto Road, Lijia Town, Wujin District, Jiangsu, Changzhou Patentee after: PANASIAN MICROVENT TECH (JIANGSU) Corp. Address before: 213000 No. 28-8 Sakamoto Road, Lijia Town, Wujin District, Jiangsu, Changzhou Patentee before: PANASIAN MICROVENT TECH (CHANGZHOU) Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 213000 No.8 Qiancao Road, Lijia Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: PANASIAN MICROVENT TECH (JIANGSU) Corp. Address before: 213000 No. 28-8 Sakamoto Road, Lijia Town, Wujin District, Jiangsu, Changzhou Patentee before: PANASIAN MICROVENT TECH (JIANGSU) Corp. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140514 |