CN1917037A - Method for improving perforation plate, and weatherability of sound absorbing structure - Google Patents
Method for improving perforation plate, and weatherability of sound absorbing structure Download PDFInfo
- Publication number
- CN1917037A CN1917037A CN 200610053344 CN200610053344A CN1917037A CN 1917037 A CN1917037 A CN 1917037A CN 200610053344 CN200610053344 CN 200610053344 CN 200610053344 A CN200610053344 A CN 200610053344A CN 1917037 A CN1917037 A CN 1917037A
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- Prior art keywords
- board
- perforated plate
- sound absorbing
- sound
- absorbing structure
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 150000002902 organometallic compounds Chemical class 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 238000002207 thermal evaporation Methods 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 12
- 230000032683 aging Effects 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
A method for improving weather resistance ability of punched-hole board and its sound absorbing ability sets metal organic composite film formed by compounding and synthesizing organic film with thickness of 0.05-0.10mm with nanosize of metal film on surface of punched-hole board for making said board be type of rainproof, dust protection, anticorrosion, aging resistance under ultraviolet ray in order to raise service life of said board. The method does not influence high frequency absorption ability of sound absorbing structure on said board but raises low frequency absorption ability of said board.
Description
Technical field
The present invention relates to the perforated plate (comprising microperforated panel) in a kind of resonance sound-absorbing chamber.
Background technology
Resonance sound-absorbing structure is the sound absorber that utilizes the resonance sound-absorbing principle design, under acoustic wave excitation, the structure of vibrating is because the interior friction of self and the friction of air, a part of vibrational energy is transformed into heat energy and consumes, according to law of conservation of energy, the energy of these losses must come the acoustic energy of their vibrations of autoexcitation.When the natural frequency of incident sound wave frequency and structure matched, structure produced resonance, and the energy loss that cause this moment is the acoustical absorption coefficient maximum of member.
Common resonance sound-absorbing structure has thin plate sound absorption structure, film sound absorption structure and perforated plate (comprising microperforated panel) sound absorption structure.For making perforation board resonance sound absorption structure have higher resonance sound-absorbing coefficient, the acoustic resistance of perforated plate structure and the characteristic impedance of atmosphere are complementary, promptly the relative specific acoustic resistance of perforated plate structure should be controlled near 1.Common perforated plate is because the hole is bigger, the linear acoustic resistance that itself is provided is very low, when incident sound pressure is not really high, even adopt microperforated panel and considered non-linear acoustic resistance, still be difficult to obtain sufficiently high specific acoustic resistance, therefore need to paste sound-absorbing porous material to replenish acoustic resistance at perforated plate back side lining.By with the compound use of sound-absorbing porous material, not only can improve its resonance sound-absorbing coefficient, simultaneously effective broadening perforation board resonance sound absorption structure sound sucting band is used widely in field of engineering technology.
The microperforated panel resonance sound-absorbing structure is proposed in the sixties in last century by the famous scientist of China, the academician of Chinese Academy of Sciences Ma Dayou the earliest, and provides the theory of computation in 1975.In recent years, China still keeps the first place in the world aspect the theory and application technical research of microperforated panel.The microperforated panel resonance sound-absorbing structure is compared with common sound absorbent perforated structure, its principal feature be penetration hole diameter below 1 millimeter, have low acoustic mass, high acoustic resistance, its sound sucting band width is better than conventional perforation board resonance sound absorption structure.In resonance sound-absorbing structure, also have this structure only and have wide sound sucting band, can remedy the narrow deficiency of resonance sound-absorbing structure sound sucting band.
Perforated plate can be made with multiple material (as sheet metal, plastic plate, scale board, plasterboard, organic glass, cardboard etc.).Along with the fast development of process technology and computing method etc., microperforated panel soundabsorbing construction comes into one's own day by day, and makes the micropunch theory obtain deep development.
Sound absorbent perforated structure and be widely used in the noise control engineering technical field with compound sound-absorption structural that sound-absorbing porous material is formed.But because porosint is making moist or is being subjected under the wet situation, sound absorbing capabilities can significantly descend, and prevents that porosint from making moist so serve as a contrast film such as laminating material usually behind at perforated plate.In fact, in the sound absorbent perforated structure actual application, must consider that also sound absorption structure is dustproof, the perforated metal panel surface anticorrosive, the problem of aging under the nonmetal perforated plate antiultraviolet irradiation.The protection against the tide of resonant cavity and inner porosint of filling thereof, dustproof problem can be solved though paste film, the anticorrosion (as acid rain) and the problem of aging under UV-irradiation thereof of perforated plate self can not be solved at perforated plate back side lining.Simultaneously, this also is easy to the films such as plastics that lining pastes wear out down in the solar ultraviolet irradiation, and serviceable life is generally not long.
Summary of the invention
The method of improving perforated plate and weatherability of sound absorbing structure thereof that the purpose of this invention is to provide a kind of anticorrosion, antiultraviolet.
The objective of the invention is to be achieved through the following technical solutions: comprising perforated plate, is the organic film of 0.05～0.10mm and the compound synthetic metal organic compound film of metallic film that thickness is nano-scale in the setting of described perforated plate upper surface by thickness.The film of this thickness range has the function that antiultraviolet is injected.
Described metallic film is one or more the metallic film by 1～3 sputter or thermal evaporation deposition.The metal of described metallic film is the metal of weak acid resistant.
The present invention has been owing to adopted at the perforated plate upper surface certain thickness metal organic compound film has been set, thus can be rainproof, dustproof, again can anticorrosion, antiultraviolet irradiation material aging down, make its prolongation in serviceable life.The present invention does not simultaneously influence the medium-high frequency sound absorbing capabilities of sound absorbent perforated structure, and the low frequency absorption performance increases.
Description of drawings
Fig. 1 is a sectional structure synoptic diagram of the present invention.
Embodiment
With reference to Fig. 1, the metal organic compound film for preparing directly is attached on the perforated plate 1: be to spray water smoke at the smooth perforated plate that cylindrical hole is arranged 1 upper surface earlier, with thickness on the metal organic compound film be nano-scale metallic film 3 up, thickness be 0.08mm organic film 2 down, lie on the perforated plate 1, push the bubble of removing between them with smooth flexible board again, organic metal film has promptly sticked on the perforated plate 1 securely.
Claims (3)
1, a kind of method of improving perforated plate and weatherability of sound absorbing structure thereof, comprise perforated plate (1), it is characterized in that: is that organic film (2) and the thickness of 0.05～0.10mm is the compound synthetic metal organic compound film of metallic film (3) of nano-scale in described perforated plate (1) upper surface setting by thickness.
2, the method for improving perforated plate and weatherability of sound absorbing structure thereof according to claim 1 is characterized in that: described metallic film (3) is one or more the metallic film by 1～3 sputter or thermal evaporation deposition.
3, the method for improving perforated plate and weatherability of sound absorbing structure thereof according to claim 1 and 2 is characterized in that: the metal of described metallic film (3) is the metal of weak acid resistant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610053344 CN1917037A (en) | 2006-09-12 | 2006-09-12 | Method for improving perforation plate, and weatherability of sound absorbing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610053344 CN1917037A (en) | 2006-09-12 | 2006-09-12 | Method for improving perforation plate, and weatherability of sound absorbing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1917037A true CN1917037A (en) | 2007-02-21 |
Family
ID=37738016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610053344 Pending CN1917037A (en) | 2006-09-12 | 2006-09-12 | Method for improving perforation plate, and weatherability of sound absorbing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1917037A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787750B (en) * | 2009-12-18 | 2011-04-20 | 杭州电子科技大学 | Sound-absorbing and noise-decreasing device based on ferroelectric material |
| CN104966511A (en) * | 2015-07-30 | 2015-10-07 | 贵州大学 | Binary embedded cylinder cavity sound absorption covering layer |
| CN105047190A (en) * | 2015-05-22 | 2015-11-11 | 上海望硕科技有限公司 | Ultrathin sound absorption material structure |
| CN107180132A (en) * | 2017-05-17 | 2017-09-19 | 河海大学常州校区 | A kind of Design method of structural parameters for suppressing microperforated panel nonlinear effect |
| CN110277083A (en) * | 2018-03-16 | 2019-09-24 | 北京理工大学 | A kind of low frequency absorption Meta Materials |
| CN112669800A (en) * | 2020-12-26 | 2021-04-16 | 西北工业大学 | Film-porous material composite structure with high-efficient sound absorption performance |
| CN114104234A (en) * | 2021-11-30 | 2022-03-01 | 浙江大学 | Covering layer diffuse reflection type sound absorption superstructure unit and superstructure |
-
2006
- 2006-09-12 CN CN 200610053344 patent/CN1917037A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101787750B (en) * | 2009-12-18 | 2011-04-20 | 杭州电子科技大学 | Sound-absorbing and noise-decreasing device based on ferroelectric material |
| CN105047190A (en) * | 2015-05-22 | 2015-11-11 | 上海望硕科技有限公司 | Ultrathin sound absorption material structure |
| CN104966511A (en) * | 2015-07-30 | 2015-10-07 | 贵州大学 | Binary embedded cylinder cavity sound absorption covering layer |
| CN107180132A (en) * | 2017-05-17 | 2017-09-19 | 河海大学常州校区 | A kind of Design method of structural parameters for suppressing microperforated panel nonlinear effect |
| CN107180132B (en) * | 2017-05-17 | 2020-05-05 | 河海大学常州校区 | Structural parameter design method for inhibiting nonlinear effect of micro-perforated plate |
| CN110277083A (en) * | 2018-03-16 | 2019-09-24 | 北京理工大学 | A kind of low frequency absorption Meta Materials |
| CN110277083B (en) * | 2018-03-16 | 2021-04-02 | 北京理工大学 | Low-frequency sound absorption metamaterial |
| CN112669800A (en) * | 2020-12-26 | 2021-04-16 | 西北工业大学 | Film-porous material composite structure with high-efficient sound absorption performance |
| CN114104234A (en) * | 2021-11-30 | 2022-03-01 | 浙江大学 | Covering layer diffuse reflection type sound absorption superstructure unit and superstructure |
| CN114104234B (en) * | 2021-11-30 | 2023-08-08 | 浙江大学 | Cover layer diffuse reflection type sound absorption super-structure unit and super-structure |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |