CN102941728A - Method for preparing bionic film capable of reducing resistance and noise - Google Patents
Method for preparing bionic film capable of reducing resistance and noise Download PDFInfo
- Publication number
- CN102941728A CN102941728A CN2012104734062A CN201210473406A CN102941728A CN 102941728 A CN102941728 A CN 102941728A CN 2012104734062 A CN2012104734062 A CN 2012104734062A CN 201210473406 A CN201210473406 A CN 201210473406A CN 102941728 A CN102941728 A CN 102941728A
- Authority
- CN
- China
- Prior art keywords
- film
- driving wheel
- microns
- bionic
- noise
- 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
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The invention relates to a method for preparing a bionic film capable of reducing resistance and noise and belongs to the technical field of material engineering. The method includes: firstly processing a triangular ditch on the surface of a driving wheel of a film laminating machine, and overlaying a polyvinyl chloride film base material on a driven wheel of the film laminating machine; and rising the temperature of the film laminating machine, enabling the driving wheel to be pressed with the driven wheel oppositely, finally unloading the driving wheel, and cooling to obtain the bionic film capable of reducing resistance and noise. The method for preparing the bionic film capable of reducing resistance and noise is simple and controllable in preparation process and capable of preparing the film materials capable of well reducing noise and resistance easily, and structural accuracy of the surface of the film material can be accurately controlled according to requirements of engineering. Devices required by the method for preparing the bionic film capable of reducing resistance and noise are simple, so that preparation cost and device maintenance cost of the film material are greatly reduced.
Description
Technical field
The present invention relates to a kind of bionic, drag-reducing noise reduction thin film technology method, belong to field of material engineering technology.
Background technology
Frictional resistance is to hinder aircraft to improve voyage and cruising speed, causes the one of the main reasons of noise and wall fire damage, derives from strong shear action between solid/aerosphere face.For all types of high-speed aircrafts, frictional resistance is the chief component of aircraft aerodynamic force, also is the main cause that causes energy to consume; If can significantly reduce the size of frictional resistance, to energy savings with to improve the aircraft integrated performance index significant.Gu/aerosphere face is aircraft wall and an air boundary zone as thin as a wafer, is characterized in very large along wall normal velocity gradient, produces thus strong shear action, it is the main cause that frictional resistance produces.By wall structure, change solid/aerosphere surface current dynamic characteristic, weaken shear action, can realize the reduction of frictional resistance, noise and weaken wall fire damage degree.To the aircraft wall directly process, coating and film be the mode of the normal change of flight wall face structure that adopts, processed by aircraft direct mechanical that shape is limit and have inefficiency, the poor defective of engineering adaptability; Then control accuracy is lower by coating.Therefore, invent out high accuracy, pattern controlled, efficiently reach the good film of engineering adaptability and can effectively overcome defects, have better reducing noise and drag effect.Yet at present as can be known groove film often has that production efficiency is low, the inapparent shortcoming of reducing noise and drag effect; Along with aircraft constantly develops to high speed, large range direction, the groove film is had higher requirement.
Plumage has formed and has had significantly special surface texture in the long-term evolution process; Wherein, feather is comprised of pinna rachis and accessory pinna; The mutual hook of plumage sprig that forms accessory pinna connects, and forms the groove structure of even and parallel distribution.During evolution, the feather surface groove structures is towards the future development that reduces the Bird Flight resistance; The flying speed of different birds is different, and the groove form that forms thus also has certain variation thereupon.This groove structure on feather surface for the reducing noise and drag film provides design considerations, is significant.
For the groove thin film technology, the present problem of ubiquity reducing noise and drag DeGrain, this and film surface groove shape and big or small scaling relation are close.Existing groove film is than under the low velocity mostly, and certain reducing noise and drag effect is arranged; Under subsonic speed and supersonic speed environment, not yet find significantly to reduce technology and the invention of resistance and noise.
Summary of the invention
The objective of the invention is to propose a kind of bionic, drag-reducing noise reduction thin film technology method, with the performance of raising reducing noise and drag material, and be convenient to preparation, be conducive to the extensive use on the engineering.
The bionic, drag-reducing noise reduction thin film technology method that the present invention proposes may further comprise the steps:
(1) Surface Machining at the driving wheel of laminating machine goes out triangular groove, and the apex angle α of triangular groove is 30～90 °, and leg-of-mutton height H is 20 microns～120 microns, and the distance L between adjacent two grooves is 70 microns～420 microns;
(2) lay the polyvinyl chloride film base material at the follower of laminating machine;
(3) make the driving wheel of laminating machine be warming up to 70 ℃～100 ℃, make driving wheel and follower mutually to pressing, the rotating speed of driving wheel is 2 rev/mins～4 rev/mins, is 800Pa～1500Pa to the follower applied pressure;
(4) to the driving wheel unloading, obtain bionic, drag-reducing noise reduction film after the cooling.
The apex angle ss of the triangular groove of the bionic, drag-reducing noise reduction film surface of the present invention's preparation is 60～120 °, and leg-of-mutton height D is 10 microns～60 microns, and between adjacent two grooves is 70 microns～420 microns apart from S.
The present invention proposes bionic, drag-reducing noise reduction thin film technology method, and preparation technology is simply controlled, be easy to prepare the good thin-film material of reducing noise and drag, and the structure precision of thin-film material surface can be controlled accurately according to requirement of engineering.The used equipment of preparation method of the present invention is simple, therefore greatly reduces preparation cost and the cost of equipment maintenance of thin-film material.
Description of drawings
Fig. 1 is the groove schematic diagram on driving wheel surface used among the preparation method of the present invention.
Fig. 2 is the triangular groove schematic diagram of the bionic, drag-reducing noise reduction film surface of the inventive method preparation.
The specific embodiment
The bionic, drag-reducing noise reduction thin film technology method that the present invention proposes may further comprise the steps:
(1) Surface Machining at the driving wheel of laminating machine goes out triangular groove, and as shown in Figure 1, the apex angle α of triangular groove is 30～90 °, and leg-of-mutton height H is 20 microns～120 microns, and the distance L between adjacent two grooves is 70 microns～420 microns;
(2) lay the polyvinyl chloride film base material at the follower of laminating machine;
(3) make the driving wheel of laminating machine be warming up to 70 ℃～100 ℃, make driving wheel and follower mutually to pressing, the rotating speed of driving wheel is 2 rev/mins～4 rev/mins, is 800Pa～1500Pa to the follower applied pressure;
(4) to the driving wheel unloading, obtain bionic, drag-reducing noise reduction film after the cooling, its structure as shown in Figure 2.
The apex angle ss of the triangular groove of the bionic, drag-reducing noise reduction film surface of the present invention's preparation is 60～120 °, and leg-of-mutton height D is 10 microns～60 microns, and between adjacent two grooves is 70 microns～420 microns apart from S.
The bionic, drag-reducing noise reduction thin film technology method that the present invention proposes, the bionic, drag-reducing noise reduction film that forms at the follower of laminating machine, strain occurs in pressing process, in the process that the compacting end temp descends, strain is recovered, the bionic, drag-reducing noise reduction film that therefore obtains at last, its surperficial groove parameter is not identical with the groove structure on driving wheel surface, mainly be the degree of depth of groove, can dwindle half, the drift angle of triangular groove and the degree of depth are changed.Therefore in preparation process, necessary basis is the size of the bionic, drag-reducing noise reduction film of requirement finally, and the design driving wheel is the size of triangular groove.
Below introduce the embodiment of the inventive method:
Embodiment one
(1) Surface Machining at the follower of laminating machine goes out triangular groove, and the apex angle α of triangular groove is 30 °, and leg-of-mutton height H is 20 microns, and the distance L between adjacent two grooves is 70 microns;
(2) lay the polyvinyl chloride film base material at the follower of laminating machine;
(3) make driving wheel be warming up to 100 ℃, make driving wheel and follower mutually to pressure, and follower is applied 800Pa, the rotating speed that makes driving wheel is 4rmp;
(4) to driving wheel unloading, obtain the triangle configuration parameter after the cooling and be β=60 °, D=10 micron, S=70 micron bionic, drag-reducing noise reduction film.
Embodiment two
(1) Surface Machining at the follower of laminating machine goes out triangular groove, and the apex angle α of triangular groove is 60 °, and leg-of-mutton height H is 70 microns, and the distance L between adjacent two grooves is 240 microns;
(2) lay the polyvinyl chloride film base material at the follower of laminating machine;
(3) make driving wheel be warming up to 80 ℃, make driving wheel and follower mutually to pressure, and follower is applied 1200Pa, the rotating speed that makes driving wheel is 4rmp;
(4) to driving wheel unloading, obtain the triangle configuration parameter after the cooling and be the bionic, drag-reducing noise reduction film of β=100 °, D=35 micron, S=240 micron.
Embodiment three
(1) Surface Machining at the follower of laminating machine goes out triangular groove, and the apex angle α of triangular groove is 90 °, and leg-of-mutton height H is 120 microns, and the distance L between adjacent two grooves is 420 microns;
(2) lay the polyvinyl chloride film base material at the follower of laminating machine;
(3) make driving wheel be warming up to 100 ℃, make driving wheel and follower mutually to pressure, and follower is applied 1500Pa, the rotating speed that makes driving wheel is 2rmp;
(4) to driving wheel unloading, obtain the triangular groove parameter after the cooling and be β=120 °, D=60 micron, S=420 micron bionic, drag-reducing noise reduction film.
In sum, owing to adopt above-mentioned design theory and preparation technology, the present invention proposes a kind of bionic, drag-reducing noise reduction film, satisfy the demand that various aircraft reduce wall resistance and noise with simple, cheap preparation, had significantly effect to saving the aircraft energy consumption with raising aircraft voyage, the speed of a ship or plane.
By explanation and accompanying drawing, provided design theory and the preparation technology of bionic, drag-reducing noise reduction film, based on spirit of the present invention, also can do other conversion.Although the present invention proposes existing preferred embodiment; Yet these contents are not as limitation.For the technical research personnel of this area, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. bionic, drag-reducing noise reduction thin film technology method is characterized in that the method may further comprise the steps:
(1) Surface Machining at the driving wheel of laminating machine goes out triangular groove, and the apex angle α of triangular groove is 30～90 °, and leg-of-mutton height H is 20 microns～120 microns, and the distance L between adjacent two grooves is 70 microns～420 microns;
(2) lay the polyvinyl chloride film base material at the follower of laminating machine;
(3) make the driving wheel of laminating machine be warming up to 70 ℃～100 ℃, make driving wheel and follower mutually to pressing, the rotating speed of driving wheel is 2 rev/mins～4 rev/mins, is 800Pa～1500Pa to the follower applied pressure;
(4) to the driving wheel unloading, obtain bionic, drag-reducing noise reduction film after the cooling.
2. preparation method as claimed in claim 1, the apex angle ss that it is characterized in that the triangular groove of described bionic, drag-reducing noise reduction film surface is 60～120 °, leg-of-mutton height D is 10 microns～60 microns, and between adjacent two grooves is 70 microns～420 microns apart from S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104734062A CN102941728A (en) | 2012-11-20 | 2012-11-20 | Method for preparing bionic film capable of reducing resistance and noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104734062A CN102941728A (en) | 2012-11-20 | 2012-11-20 | Method for preparing bionic film capable of reducing resistance and noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102941728A true CN102941728A (en) | 2013-02-27 |
Family
ID=47724760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104734062A Pending CN102941728A (en) | 2012-11-20 | 2012-11-20 | Method for preparing bionic film capable of reducing resistance and noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102941728A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318837A (en) * | 2013-05-08 | 2013-09-25 | 安徽工业大学 | Flexible noise reduction bionic mebrane with blocking property and preparation method thereof |
| CN108583775A (en) * | 2018-05-07 | 2018-09-28 | 广东电网有限责任公司电力科学研究院 | A kind of super hydrophobic surface air layers reducing resistance model |
| CN111559396A (en) * | 2020-06-04 | 2020-08-21 | 清华大学 | Novel drag-reduction noise-reduction microstructure surface and preparation method thereof |
| CN112124561A (en) * | 2020-09-27 | 2020-12-25 | 中国商用飞机有限责任公司 | Aerodynamic drag reduction structure for wingtip winglet of aircraft and aircraft |
| CN113247173A (en) * | 2021-06-30 | 2021-08-13 | 北京航空航天大学 | Multifunctional structure for reducing drag and noise, and preparation method and application thereof |
| CN113479287A (en) * | 2021-07-29 | 2021-10-08 | 西北工业大学 | Drag reduction film for ship |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079156A (en) * | 2010-10-15 | 2011-06-01 | 吉林吉瑞莱板材科技有限公司 | Method and equipment for processing geothermal heating thermal insulation layer |
| CN102689459A (en) * | 2012-06-01 | 2012-09-26 | 清华大学 | Groove sticking membrane with function of reducing noise and drag and preparation method therefor |
-
2012
- 2012-11-20 CN CN2012104734062A patent/CN102941728A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079156A (en) * | 2010-10-15 | 2011-06-01 | 吉林吉瑞莱板材科技有限公司 | Method and equipment for processing geothermal heating thermal insulation layer |
| CN102689459A (en) * | 2012-06-01 | 2012-09-26 | 清华大学 | Groove sticking membrane with function of reducing noise and drag and preparation method therefor |
Non-Patent Citations (1)
| Title |
|---|
| 封贝贝，汪家道，陈大融: "微米级沟槽表面薄膜的制备及减阻性能研究", 《功能材料》, vol. 43, no. 9, 15 May 2012 (2012-05-15) * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318837A (en) * | 2013-05-08 | 2013-09-25 | 安徽工业大学 | Flexible noise reduction bionic mebrane with blocking property and preparation method thereof |
| CN103318837B (en) * | 2013-05-08 | 2015-07-08 | 安徽工业大学 | Flexible noise reduction bionic mebrane with blocking property and preparation method thereof |
| CN108583775A (en) * | 2018-05-07 | 2018-09-28 | 广东电网有限责任公司电力科学研究院 | A kind of super hydrophobic surface air layers reducing resistance model |
| CN111559396A (en) * | 2020-06-04 | 2020-08-21 | 清华大学 | Novel drag-reduction noise-reduction microstructure surface and preparation method thereof |
| CN112124561A (en) * | 2020-09-27 | 2020-12-25 | 中国商用飞机有限责任公司 | Aerodynamic drag reduction structure for wingtip winglet of aircraft and aircraft |
| CN113247173A (en) * | 2021-06-30 | 2021-08-13 | 北京航空航天大学 | Multifunctional structure for reducing drag and noise, and preparation method and application thereof |
| CN113247173B (en) * | 2021-06-30 | 2022-06-21 | 北京航空航天大学 | Multifunctional structure for reducing drag and noise, and preparation method and application thereof |
| CN113479287A (en) * | 2021-07-29 | 2021-10-08 | 西北工业大学 | Drag reduction film for ship |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102941728A (en) | Method for preparing bionic film capable of reducing resistance and noise | |
| CN104276284B (en) | A kind of series type fan rotor aircraft layout | |
| CN103482054B (en) | Low-Reynolds-number wing section matched with full-wing solar unmanned aerial vehicle | |
| CN102826216A (en) | Aerodynamic configuration of aircraft | |
| CN108423157B (en) | Two-blade propeller suitable for tilting rotor aircraft | |
| CN102689459B (en) | Groove sticking membrane with function of reducing noise and drag and preparation method therefor | |
| CN107878728B (en) | Wing structure and aircraft | |
| CN114132482A (en) | Wing and method for improving control efficiency of two-dimensional wing control surface | |
| CN205060003U (en) | Low novel multiaxis unmanned aerial vehicle of power consumption cruises | |
| CN107697284B (en) | Double-section bionic flapping wing unmanned aerial vehicle wing | |
| CN205554559U (en) | Pneumatic appearance of duct formula is from rotor craft of master control | |
| CN204750567U (en) | High -speed fan wing aircraft | |
| CN204937472U (en) | A kind of aerofoil profile being directed to dopey | |
| CN113060269A (en) | Pneumatic layout of tandem tilting canal type boat wing airship | |
| CN204126820U (en) | A kind of small-sized wind power generator blade | |
| CN103640695A (en) | Novel vertical lift fixed wing aircraft | |
| CN104773293A (en) | Rotor wing lift device with wind ball drive wind wheel | |
| CN103381887B (en) | Compound type power wing aircraft | |
| CN109748237B (en) | Microstructure with anti-icing and anti-drag integrated functions and construction method thereof | |
| CN210391541U (en) | Grid rudder with composite material carbon fiber structure | |
| CN204956918U (en) | Unmanned aerial vehicle bispin wing structure | |
| CN104139851A (en) | Power apparatus | |
| CN204160761U (en) | Composite (back-up) roll | |
| CN210793626U (en) | Aircraft | |
| CN201712789U (en) | Wingless aircraft |
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 |
Application publication date: 20130227 |