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
- Authority
- CN
- China
- Prior art keywords
- perforated plate
- sound
- metal
- film
- absorbing structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Building Environments (AREA)
Abstract
一种改善穿孔板及其吸声结构耐候性的方法，包括穿孔板，在所述穿孔板上表面设置由厚度0.05～0.10mm的有机薄膜与厚度为纳米尺寸的金属薄膜复合合成的金属有机复合薄膜。本发明既能防雨、防尘，又能防腐蚀、防紫外线照射下的材料老化，使其寿命延长。同时本发明不影响穿孔板吸声结构的中高频吸声性能，而低频吸声性能有所提高。
A method for improving the weather resistance of a perforated plate and its sound-absorbing structure, comprising a perforated plate, on the surface of the perforated plate, a metal-organic composite compound synthesized by combining an organic film with a thickness of 0.05 to 0.10 mm and a metal film with a thickness of nanometer size. film. The invention can not only prevent rain and dust, but also prevent corrosion and material aging under ultraviolet radiation, so that the service life is prolonged. At the same time, the invention does not affect the middle and high frequency sound absorption performance of the sound absorption structure of the perforated plate, but the low frequency sound absorption performance is improved.
Description
技术领域technical field
本发明涉及一种共振吸声腔的穿孔板(包括微穿孔板)。The invention relates to a perforated plate (including a micro-perforated plate) of a resonant sound-absorbing cavity.
背景技术Background technique
共振吸声结构是利用共振吸声原理设计的吸声体，在声波激励下，振动着的结构由于自身的内摩擦和空气的摩擦，把一部分振动能量转变成热能而消耗掉，根据能量守恒定律，这些损耗的能量必定来自激励它们振动的声能量。入射声波的频率与结构的固有频率相吻合时，结构产生共振，此时引起的能量损耗即构件的吸声系数最大。The resonant sound-absorbing structure is a sound-absorbing body designed using the principle of resonant sound-absorbing. Under the excitation of sound waves, the vibrating structure converts part of the vibration energy into heat energy due to its own internal friction and air friction. According to the law of energy conservation , the energy lost must come from the acoustic energy that excites them to vibrate. When the frequency of the incident sound wave coincides with the natural frequency of the structure, the structure will resonate, and the energy loss caused by this time, that is, the sound absorption coefficient of the component, is the largest.
常见的共振吸声结构有薄板吸声结构、薄膜吸声结构和穿孔板(包括微穿孔板)吸声结构。为使穿孔板共振吸声结构具有较高的共振吸声系数，应使穿孔板结构的声阻与大气的特性阻抗相匹配，即穿孔板结构的相对声阻率应控制在1附近。普通穿孔板因为孔较大，本身所提供的线性声阻很低，当入射声压不很高时，即使采用微穿孔板并考虑了非线性声阻，仍很难获得足够高的声阻率，因此需在穿孔板背面衬贴多孔吸声材料以补充声阻。通过与多孔吸声材料复合使用，不仅可以提高其共振吸声系数，同时可有效展宽穿孔板共振吸声结构吸声频带，在工程技术领域已得到广泛应用。Common resonant sound-absorbing structures include thin-plate sound-absorbing structures, thin-film sound-absorbing structures, and perforated plate (including micro-perforated plates) sound-absorbing structures. In order to make the perforated plate resonant sound absorption structure have a high resonance sound absorption coefficient, the acoustic resistance of the perforated plate structure should match the characteristic impedance of the atmosphere, that is, the relative acoustic resistivity of the perforated plate structure should be controlled near 1. Ordinary perforated plates provide very low linear acoustic resistance because of their large holes. When the incident sound pressure is not high, even if micro-perforated plates are used and nonlinear acoustic resistance is considered, it is still difficult to obtain a sufficiently high acoustic resistivity. , so it is necessary to line the back of the perforated board with porous sound-absorbing material to supplement the sound resistance. By using it in combination with porous sound-absorbing materials, it can not only improve its resonant sound absorption coefficient, but also effectively broaden the sound-absorbing frequency band of the perforated plate resonant sound-absorbing structure, which has been widely used in the field of engineering technology.
微穿孔板共振吸声结构最早是由我国著名科学家、中科院院士马大猷在上世纪60年代提出的，并于1975年给出计算理论。近年来，我国在微穿孔板的理论与应用技术研究方面，仍保持国际领先地位。微穿孔板共振吸声结构与普通穿孔板吸声结构相比，其主要特点是穿孔直径在1毫米以下，具有低声质量、高声阻，其吸声频带宽度优于常规的穿孔板共振吸声结构。在共振吸声结构中，也唯有该结构具有宽吸声频带，可弥补共振吸声结构吸声频带窄的不足。The resonant sound-absorbing structure of the micro-perforated plate was first proposed by Ma Dayou, a famous Chinese scientist and academician of the Chinese Academy of Sciences, in the 1960s, and the calculation theory was given in 1975. In recent years, my country has maintained an international leading position in the research on the theory and application technology of micro-perforated plates. Compared with the ordinary perforated plate sound-absorbing structure, the resonant sound-absorbing structure of the micro-perforated plate is characterized by the perforation diameter below 1 mm, low sound quality and high sound resistance, and its sound-absorbing frequency band width is better than that of the conventional perforated plate resonant absorbing structure. acoustic structure. In the resonant sound-absorbing structure, only this structure has a wide sound-absorbing frequency band, which can make up for the deficiency of the resonant sound-absorbing structure's narrow sound-absorbing frequency band.
穿孔板可用多种材料(如金属板、塑料板、胶合板、石膏板、有机玻璃、纸板等)制成。随着加工技术和计算方法等的快速发展，微穿孔板吸声结构日益受到重视，并使微穿孔理论取得了深入的发展。Perforated panels can be made from a variety of materials (eg metal, plastic, plywood, gypsum board, plexiglass, cardboard, etc.). With the rapid development of processing technology and calculation methods, the sound-absorbing structure of micro-perforated panels has been paid more and more attention, and the theory of micro-perforated has been further developed.
穿孔板吸声结构及其与多孔吸声材料组成的复合吸声结构在噪声控制工程技术领域得到广泛的应用。但是，由于多孔材料在受潮或受湿情况下，吸声性能会显著下降，故通常在穿孔板背后衬贴塑料等薄膜防止多孔材料受潮。事实上，在穿孔板吸声结构实际应用过程中，还必须考虑吸声结构防尘、金属穿孔板表面防腐蚀，非金属穿孔板防紫外线照射下的老化问题。在穿孔板背面衬贴薄膜虽然可以解决共振腔及其内部填充的多孔材料的防潮、防尘问题，但不能解决穿孔板自身的防腐蚀(如酸雨)及其在紫外光照射下的老化问题。同时，衬贴的塑料等薄膜本身在太阳紫外线照射下也很容易老化，使用寿命普遍不长。The perforated plate sound-absorbing structure and its composite sound-absorbing structure composed of porous sound-absorbing materials have been widely used in the field of noise control engineering technology. However, since the sound absorption performance of the porous material will be significantly reduced when it is damp or wet, a film such as plastic is usually placed on the back of the perforated plate to prevent the porous material from getting wet. In fact, in the actual application process of the perforated plate sound-absorbing structure, it is also necessary to consider the dust-proof of the sound-absorbing structure, the anti-corrosion of the surface of the metal perforated plate, and the aging of the non-metallic perforated plate under ultraviolet radiation. Although sticking a film on the back of the perforated plate can solve the moisture-proof and dust-proof problems of the resonant cavity and the porous material filled inside, it cannot solve the corrosion resistance (such as acid rain) of the perforated plate itself and its aging problem under ultraviolet light. Simultaneously, the films such as the plastic lining itself are also easy to age under the sun's ultraviolet radiation, and the service life is generally not long.
发明内容Contents of the invention
本发明的目的是提供一种防腐蚀、防紫外线的改善穿孔板及其吸声结构耐候性的方法。The object of the present invention is to provide a method for improving the weather resistance of the perforated plate and its sound-absorbing structure, which is anti-corrosion and anti-ultraviolet.
本发明的目的是通过以下技术方案实现的：包括穿孔板，在所述穿孔板上表面设置由厚度为0.05～0.10mm的有机薄膜与厚度为纳米尺寸的金属薄膜复合合成的金属有机复合薄膜。该厚度范围的薄膜具有防紫外线射入的功能。The purpose of the present invention is achieved through the following technical solutions: comprising a perforated plate, on the surface of the perforated plate is provided a metal-organic composite film composed of an organic film with a thickness of 0.05-0.10 mm and a metal film with a thickness of nanometer size. Films in this thickness range have the function of preventing ultraviolet rays from entering.
所述金属薄膜是通过1～3次溅射或热蒸发沉积的一种或一种以上的金属薄膜。所述金属薄膜的金属是耐弱酸的金属。The metal thin film is one or more than one metal thin film deposited by 1-3 times of sputtering or thermal evaporation. The metal of the metal thin film is weak acid-resistant metal.
本发明由于采用了在穿孔板上表面设置一定厚度的金属有机复合薄膜，所以既能防雨、防尘，又能防腐蚀、防紫外线照射下的材料老化，使其使用寿命延长。同时本发明不影响穿孔板吸声结构的中高频吸声性能，而低频吸声性能有所提高。Because the present invention adopts the metal-organic composite film with a certain thickness on the surface of the perforated plate, it can not only prevent rain, dust, corrosion, and material aging under ultraviolet radiation, but also prolong its service life. At the same time, the invention does not affect the middle and high frequency sound absorption performance of the perforated plate sound absorption structure, but the low frequency sound absorption performance is improved.
附图说明Description of drawings
图1是本发明的剖视结构示意图。Fig. 1 is a schematic cross-sectional structure diagram of the present invention.
具体实施方式Detailed ways
参照图1，将制备好的金属有机复合薄膜直接贴在穿孔板1上：是先在光滑的有圆柱孔的穿孔板1上表面喷上水雾，将金属有机复合薄膜上厚度为纳米尺寸的金属薄膜3朝上，厚度为0.08mm的有机薄膜2朝下，平放在穿孔板1上，再用平整的柔性板挤压去除它们之间的气泡，金属有机薄膜即牢固地粘贴在穿孔板1上了。Referring to Figure 1, the prepared metal-organic composite film is directly pasted on the perforated plate 1: first spray water mist on the smooth upper surface of the perforated plate 1 with cylindrical holes, and then paste the metal-organic composite film with a thickness of nanometers. The metal film 3 faces upwards, and the organic film 2 with a thickness of 0.08mm faces downwards. Place it flat on the perforated plate 1, and then squeeze it with a flat flexible plate to remove the air bubbles between them. The metal organic film is firmly pasted on the perforated plate. 1 is up.
Claims (3)
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 absorption and noise reduction device based on ferroelectric materials |
| 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 absorption and noise reduction device based on ferroelectric materials |
| 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 | A low-frequency sound-absorbing 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203531166U (en) | Composite low-frequency sound barrier | |
| CN206690635U (en) | A kind of denoising structure of regular hexagon cellular material | |
| CN204356925U (en) | A kind of indoor substation low frequency absorption denoising device | |
| CN106782477A (en) | A kind of Helmholtz chambers acoustic metamaterial with membrane structure | |
| CN1917037A (en) | Method for improving perforation plate, and weatherability of sound absorbing structure | |
| CN204151706U (en) | Acoustic screen body | |
| CN200953238Y (en) | Apparatus for improving perforated plate and sound absorption structure weather resistance thereof | |
| CN107610934B (en) | A capacitor with low operating noise | |
| CN107610688B (en) | Cavity tube composite sound insulation structure | |
| CN205722782U (en) | A kind of noise barrier shield plate composite sound absorbing body | |
| CN210792324U (en) | A high-efficiency sound insulation physical and chemical board | |
| CN1835071A (en) | High molecular particle composite sound absorbing material, its mfg. method and uses | |
| CN207363155U (en) | A kind of bamboo porous noise reducing plate | |
| CN200949212Y (en) | Street dust-removal acoustical shield device | |
| CN214886654U (en) | Novel soundproof door | |
| CN107268920A (en) | A kind of novel sound insulating sheet material | |
| CN202805807U (en) | Ultraviolet-proof sound-insulating glass | |
| CN202008830U (en) | Composite sound absorption board | |
| CN204288795U (en) | A kind of sound-proof sound-absorbing plate | |
| CN211045026U (en) | Combined noise reduction device | |
| CN208106253U (en) | A kind of novel sound insulating window | |
| CN107650635A (en) | A kind of Jing Yin vehicle window of micropunch film | |
| CN2432275Y (en) | Environmental protection high efficient sound absorber | |
| CN202395972U (en) | Electric panel speaker having sounding medium made of elastic film | |
| CN211868799U (en) | A high-energy nano-impact membrane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |