WO2015043195A1 - 交通声屏障用高吸声组合材料及其制备方法 - Google Patents
交通声屏障用高吸声组合材料及其制备方法 Download PDFInfo
- Publication number
- WO2015043195A1 WO2015043195A1 PCT/CN2014/077160 CN2014077160W WO2015043195A1 WO 2015043195 A1 WO2015043195 A1 WO 2015043195A1 CN 2014077160 W CN2014077160 W CN 2014077160W WO 2015043195 A1 WO2015043195 A1 WO 2015043195A1
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- WIPO (PCT)
- Prior art keywords
- sound
- absorbing
- expanded polytetrafluoroethylene
- porous
- high sound
- Prior art date
Links
- 230000004888 barrier function Effects 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 title abstract description 23
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000005253 cladding Methods 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 239000011358 absorbing material Substances 0.000 claims description 30
- 239000002131 composite material Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 24
- 239000010410 layer Substances 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 15
- 238000000576 coating method Methods 0.000 claims description 15
- 239000005871 repellent Substances 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 12
- 239000011491 glass wool Substances 0.000 claims description 10
- 239000011490 mineral wool Substances 0.000 claims description 10
- 235000019362 perlite Nutrition 0.000 claims description 10
- 239000010451 perlite Substances 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000011229 interlayer Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 238000004826 seaming Methods 0.000 claims 2
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 5
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- -1 polytetrafluoroethylene Polymers 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 239000012784 inorganic fiber Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 230000002940 repellent Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012814 acoustic material Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical group FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0017—Plate-like elements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0023—Details, e.g. foundations
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
- E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
- E01F8/0029—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with porous surfaces, e.g. concrete with porous fillers
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/56—After-treatment of articles, e.g. for altering the shape
- B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/56—After-treatment of articles, e.g. for altering the shape
- B29C44/569—Shaping and joining components with different densities or hardness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
- B29K2105/041—Microporous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0001—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties
- B29K2995/0002—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular acoustical properties insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/721—Vibration dampening equipment, e.g. shock absorbers
Definitions
- the invention relates to a high sound absorbing composite material based on a surface coated expanded polytetrafluoroethylene film and a modified film thereof for a traffic sound barrier and a preparation method thereof.
- the design of the sound barrier has fully considered the high-speed rail, highway, urban light rail, subway wind load, traffic safety impact and all-weather open-air anti-corrosion problems. It has a beautiful appearance and a long life. It is a sound insulation and noise reduction facility commonly used in modern cities. During the propagation of sound waves, when the sound barrier is encountered, reflection, transmission and diffraction occur.
- the sound barrier height is between lm-5m, covering the effective area with an average noise reduction of 10-15dB(A) (125Hz-40000Hz, 1/3 octave), when the high speed train travels at a speed of 250-350KM/H, or high speed When high-altitude vehicles on elevated highways pass, the noise source of high-speed rail or subway or expressway will reach about 100dB.
- the technical problem to be solved by the present invention is to provide a high sound absorbing composite material for a traffic sound barrier and a preparation method thereof, which can make the traffic sound barrier not only have a soundproof function but also have a better sound absorbing function, so that the high iron rail elevated, the expressway, The noise of urban light rail and subway is significantly reduced, reaching 60 ⁇ 75dB. Ambient noise limits for work and life.
- one technical solution adopted by the present invention is: Providing a high sound absorbing composite material for a traffic sound barrier, comprising: a porous sound absorbing material layer and a coating layer, and a porous sound absorbing material layer surface sealing coating
- the coating layer is sealed and connected at the coating and the joint, and the coating layer is a modified polytetrafluoroethylene microporous film layer or a modified polytetrafluoroethylene microporous film modified film layer.
- the porous sound absorbing material layer is made of fibrous aggregated fibers and articles thereof, porous structured foam, expanded perlite products, microporous glass wool, slag wool or the like.
- the material is a variety of sound absorbing panels or sound absorbing members made of the main raw materials.
- the sealed process connection includes quilting, bonding or welding.
- the high sound absorbing composite material is disposed within the surface of the sound barrier panel or within the interlayer of the porous barrier panel.
- another technical solution for the present invention is to provide a method for preparing a high sound absorbing composite material for a traffic sound barrier, comprising the following steps: a) porous sound absorbing material and expanded polytetrafluoroethylene Microporous film or expanded polytetrafluoroethylene microporous film modified film for pre-process material preparation; b) cutting porous sound absorbing material; c) expanded polytetrafluoroethylene microporous film or expanded polytetra The modified film of the fluoroethylene microporous film is coated on the surface of the porous sound absorbing material; d) sealing treatment is applied at the coating and the joint; e) after the above steps are completed, the combined material is inspected, and the package is tested after passing the test.
- step b) after step b) is completed, an adhesive strip is disposed on the porous sound absorbing material according to the process requirements.
- the porous sound absorbing material is a fibrous aggregated fiber. And its products, porous foam, expanded perlite products, microporous glass wool, slag wool or various sound absorbing panels or sound absorbing members made of such materials as the main raw material.
- the sealing treatment connection of step d) comprises quilting, bonding or welding.
- the modified film of the expanded polytetrafluoroethylene microporous film is modified on the surface of the expanded polytetrafluoroethylene microporous film with a layer of oil repellent or more. Modified treated coating.
- the modified film of the expanded polytetrafluoroethylene microporous film is coated on the front and back sides of the expanded polytetrafluoroethylene microporous film and coated with the oil repellent and water repellent Sexually treated coating.
- the high sound absorbing composite material for the traffic sound barrier of the present invention can significantly reduce noise, and is combined with the existing traffic sound barrier technology to make the traffic sound barrier not only have sound insulation function but also better sound absorption function.
- the noise of high-speed rail, highway, urban light rail and subway is significantly reduced, reaching 60 ⁇ 75 dB of environmental noise limit suitable for working life.
- the high sound absorption composite material for traffic sound barrier is resistant to outdoor and ultraviolet aging life longer than the existing acoustic barrier.
- the sound-absorbing barrier uses high-sounding composite materials to make various organic or inorganic fibers and their products coated with fibrous aggregates, as well as porous structures of open-cell foam and expanded perlite products and have internal A large number of interpenetrating, outwardly opening microporous glass wool and slag wool or various sound absorbing panels or sound absorbing members made of such materials are not polluting the environment.
- the high sound absorption composite material for traffic sound barrier has good flame retardancy.
- Moisture-proof The high-sounding sound-absorbing material of the traffic sound barrier has good water-proof property, no water seepage, no mildew, bacterial growth, decay and unpleasant smell, ensuring long-term stability.
- Plasticity The traffic sound barrier is easy to operate with high sound absorption combination materials, which can be applied to different specifications or tight spaces, providing greater flexibility in product design, light weight and easy installation.
- FIG. 1 is a preferred embodiment of the high sound absorbing composite material for traffic sound barrier of the present invention. Schematic diagram of the structure; the components of the drawings are marked as follows: 1. Porous sound absorbing material layer, 2. Coating layer. detailed description
- an embodiment of the present invention includes: a high sound absorbing composite material for a traffic sound barrier, comprising: a porous sound absorbing material layer 1 and a cladding layer 2, the surface of the porous sound absorbing material layer 1 is sealed and coated with the package
- the coating layer 2 is sealed at the coating and the joint, and the coating layer 2 is a modified polytetrafluoroethylene microporous film layer or a modified polytetrafluoroethylene microporous film modified film layer.
- Expanded polytetrafluoroethylene film Polytetrafluoroethylene (PTFE) Waterproof and moisture permeable microporous membrane is made by biaxial stretching by special process, thickness is about 10 ⁇ 200 ⁇ ⁇ , porosity is 80 ⁇ 96%, average The pore size is 0.01 ⁇ 25 ⁇ ⁇ , which is about 1/5000-1/20000 of water droplets, 700 times larger than water vapor molecules. The surface of the membrane can reach several billion open pores per square inch, each micropore. The diameter is several hundred times larger than the air molecules. Use The microporous structure can achieve excellent waterproof and moisture permeable function, and the hole is extremely small and longitudinally irregularly curved and staggered.
- PTFE Polytetrafluoroethylene
- the material has a large number of interpenetrating, outwardly open micropores, which absorb noise.
- the expanded polytetrafluoroethylene film has good outdoor weather resistance, good thermal stability and wide operating temperature. It can work continuously at temperatures from minus 150 ° C to 260 ° C. The melting point is up to 327 °. C, non-combustible, excellent chemical stability, acid resistance, good alkalinity, can be used as many highly corrosive media, low friction coefficient, strong hydrophobicity, and can withstand outdoor ultraviolet radiation for more than 20 years without aging.
- the porous sound absorbing material layer 1 is made of fibrous aggregated fibers and products thereof, porous foam, expanded perlite products, microporous glass wool, slag wool or various materials made of such materials. Sound absorbing panels or sound absorbing members. Sealing and jointing at the joint and joint to quilt, bond or weld, in order to ensure no rain.
- the sound absorbing mechanism of the porous sound absorbing material causes air vibration in the pores when the sound waves are incident on the porous material. Due to the viscous resistance of friction and air, a part of the acoustic energy is converted into heat energy; in addition, the heat conduction between the air in the pores and the pore walls and fibers causes heat loss, which attenuates the sound energy and reduces the noise decibel value.
- the high sound absorption composite material is disposed on the surface of the sound barrier board or in the interlayer of the porous barrier board, so that the traffic sound barrier not only has sound insulation function but also has better sound absorption function.
- the noise of high-speed rail, highway, urban light rail and subway is significantly reduced, reaching 60 ⁇ 75dB environmental noise limit suitable for working life.
- Embodiment 1 A method for preparing a high sound absorbing composite material for a traffic sound barrier, comprising the following steps: a) a porous sound absorbing material and an expanded polytetrafluoroethylene microporous film for pre-process material preparation; b) a porous suction The acoustic material is cut, and after the cutting is completed, the adhesive strip is disposed on the porous sound absorbing material according to the process requirement; c) the expanded polytetrafluoroethylene microporous film is coated on the surface of the porous sound absorbing material; d) coated And the joint is sealed and connected, including quilting, bonding or welding; e) After the above steps are completed, the combined materials are inspected and packaged after passing the inspection.
- the porous sound absorbing material is a fibrous aggregate structure of various organic or inorganic fibers and articles thereof, and a porous structure of open-cell foamed plastic and expanded perlite products and has a large number of interpenetrating, outwardly open micro- Perforated glass wool and slag wool or various sound absorbing panels or sound absorbing members made of such materials as main raw materials.
- the preparation process of the expanded polytetrafluoroethylene microporous film comprises the following steps: a) mixing the polytetrafluoroethylene dispersion resin and the liquid auxiliary agent in proportion; b) after the mixing is completed, pressing it into the column blank, and The column blank is sliced by calendering to perform winding; c) re-rolling, and the flakes are removed by heating at the drying tunnel; d) after the aiding agent is removed, the sheet is stretched into microfiber holes. Structure, after heat setting, rewinding; e) After completing the above steps, inspecting and packaging, and finally obtaining an expanded polytetrafluoroethylene microporous film.
- Embodiment 2 A method for preparing a high sound absorbing composite material for a traffic sound barrier, comprising the following steps: a) preparing a modified film of a porous sound absorbing material and an expanded polytetrafluoroethylene microporous film as a pre-process material;
- the porous sound absorbing material is a fibrous aggregate structure of various organic or inorganic fibers and products thereof, and a porous structure of open-cell foam and expanded perlite products and a large amount of interpenetrating, internal Microporous glass wool and slag wool that are open to the outside or various sound absorbing panels or sound absorbing members made of such materials as main materials.
- the modified film of the expanded polytetrafluoroethylene microporous film is modified on the surface of the expanded polytetrafluoroethylene microporous film by coating with a layer of oil-repellent and water-repellent modified coating, or The front and back surfaces of the expanded polytetrafluoroethylene microporous film are coated with the oil-repellent and water-repellent-modified coating.
- the processing technology of the water-repellent and oil-repellent surface modification treatment of the expanded polytetrafluoroethylene microporous film is to first unwind the expanded polytetrafluoroethylene microporous film, spray the surface of the film with a water repellent treatment agent, and then perform low temperature drying to treat the oil. The surface of the film is sprayed, and then dried at a low temperature. After the final inspection, the film is stored.
- the high sound absorbing composite material for the traffic sound barrier of the present invention can significantly reduce noise, and is combined with the existing traffic sound barrier technology to make the traffic sound barrier not only have sound insulation function but also better sound absorption function.
- the noise of high-speed rail, highway, urban light rail and subway is significantly reduced, reaching 60 ⁇ 75 dB of environmental noise limit suitable for working life.
- the high sound absorption composite material for traffic sound barrier is resistant to outdoor and ultraviolet aging life longer than the existing acoustic barrier.
- the sound-absorbing barrier uses high-sounding composite materials to make various organic or inorganic fibers and their products coated with fibrous aggregates, as well as porous structures of open-cell foam and expanded perlite products and have internal A large number of interpenetrating, outwardly opening microporous glass wool and slag wool or various sound absorbing panels or sound absorbing members made of such materials are not polluting the environment.
- the high sound absorption composite material for traffic sound barrier has good flame retardancy.
- the high-sounding combination material of the traffic sound barrier is waterproof, non-seepage, no mold, bacteria breeding, decay and unpleasant smell, ensuring long-term stability.
- the traffic sound barrier is easy to operate with high sound absorption combination materials, which can be applied to different specifications or tight spaces, providing greater flexibility in product design, light weight and easy installation.
- the above is only the embodiment of the present invention, and thus does not limit the scope of the invention, and the equivalent structure or equivalent process transformation made by using the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, The same is included in the scope of patent protection of the present invention.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020167005454A KR20160067833A (ko) | 2013-09-25 | 2014-05-09 | 교통 방음벽용 고흡음 복합소재 및 그 제조방법 |
MX2016003714A MX2016003714A (es) | 2013-09-25 | 2014-05-09 | Material compuesto de alta absorcion del sonido para barreras contra el sonido del trafico y metodo de preparacion del mismo. |
EP14847941.3A EP3051025A4 (en) | 2013-09-25 | 2014-05-09 | Combined material with high sound absorption for traffic acoustic barrier and preparation method therefor |
JP2016516608A JP6283100B2 (ja) | 2013-09-25 | 2014-05-09 | 交通音遮断用高吸音複合材料及びその製造方法 |
US15/063,530 US9771693B2 (en) | 2013-09-25 | 2016-03-08 | High-sound-absorption composite material for traffic sound barriers and preparation method thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201310441132.3 | 2013-09-25 | ||
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CN103498428B (zh) * | 2013-09-25 | 2016-08-17 | 江苏泛亚微透科技股份有限公司 | 交通声屏障用高吸声组合材料及其制备方法 |
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US10783867B2 (en) * | 2018-11-08 | 2020-09-22 | Apple Inc. | Acoustic filler including acoustically active beads and expandable filler |
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CN112669800A (zh) * | 2020-12-26 | 2021-04-16 | 西北工业大学 | 一种具有高效吸声性能的薄膜-多孔材料复合结构 |
CN112900298A (zh) * | 2021-01-22 | 2021-06-04 | 泰州职业技术学院 | 一种吸声减载声屏障单元及其声屏障 |
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Also Published As
Publication number | Publication date |
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JP2016536624A (ja) | 2016-11-24 |
US9771693B2 (en) | 2017-09-26 |
CN103498428B (zh) | 2016-08-17 |
US20160186395A1 (en) | 2016-06-30 |
MX2016003714A (es) | 2016-06-06 |
CN103498428A (zh) | 2014-01-08 |
KR20160067833A (ko) | 2016-06-14 |
EP3051025A4 (en) | 2017-05-31 |
JP6283100B2 (ja) | 2018-02-21 |
EP3051025A1 (en) | 2016-08-03 |
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