CN111113752A - Preparation method of silver ant-imitated wave-transmitting bionic reflecting layer and inflatable wave-transmitting heat-proof assembly - Google Patents
Preparation method of silver ant-imitated wave-transmitting bionic reflecting layer and inflatable wave-transmitting heat-proof assembly Download PDFInfo
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- CN111113752A CN111113752A CN201911300922.3A CN201911300922A CN111113752A CN 111113752 A CN111113752 A CN 111113752A CN 201911300922 A CN201911300922 A CN 201911300922A CN 111113752 A CN111113752 A CN 111113752A
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- bionic
- wave
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- layer
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- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
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- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
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- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/52—Protection, safety or emergency devices; Survival aids
- B64G1/58—Thermal protection, e.g. heat shields
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
Abstract
The invention provides a preparation method of a silver ant imitation wave-transparent bionic reflecting layer and an inflatable wave-transparent heat-proof component, wherein the method comprises the following steps: and constructing a PDMS (polydimethylsiloxane) bionic negative template by overturning and copying the silver ant biological template, and coating glue solution on the PDMS bionic negative template to prepare the silver ant-imitated wave-transmitting bionic reflecting layer. This aerify ripples solar heat protection subassembly includes from last down: the artificial silver ant wave-transmitting bionic reflection layer, the inflatable layer and the infrared heat dissipation layer; the inflatable layer is inflated by the inflating device when in orbit, so that the whole assembly structure is adjusted to a certain filling state. According to the invention, the principle that silver ants reflect sunlight by means of a micro-nano hair layer structure is utilized, and the micro-nano structure that the wide frequency band section of the surface of the silver ants reflects heat flow outside the sun is biomimetically copied, so that the silver ant has good wave-transmitting performance under the condition of sunlight prevention performance; the adjustment and control of the filling state of the inflatable layer can adjust the tightening state of the surface heat-proof microstructure, and plays a role in micro adjustment and control of equivalent thermal control parameters of the film structure, so that the temperature has uniformity.
Description
Technical Field
The invention relates to the field of thermal control of spacecrafts, in particular to a preparation method of a silver ant-imitated wave-transmitting bionic reflecting layer and an inflatable wave-transmitting heatproof component.
Background
The flexible thermal control film material is widely applied to various spacecraft platforms due to low price, easy production, easy installation and light weight, the performance of the flexible thermal control film material is very important for maintaining the normal working environment of the spacecraft, and the typical flexible thermal control film material is a star coat on the surface of the spacecraft, namely a multilayer thermal insulation assembly, which is formed by combining a plurality of layers of flexible films.
Reference [1] (Norman Nan, Shi; Cheng-Chia, Tsai; Fernando, Camino; Gary D, bernarard; Nanfang, Yu; R ü diger, Wehner; encapsulating cool: Enhanced optical reflection and heat dispersion in silver optics, Science, vols.349, Issue 6245,2015, pp: 298-.
And the film heat-proof heat dissipation principle of the two films only utilizes the infrared heat dissipation principle of the silver ant structure, the principle of reflecting the heat flow outside the sun in the visible light wave band is not fully utilized, the reflection is still realized by a metal plated layer, and the film is added with the metal layer and cannot be used on an antenna system. The existing star clothes (and multi-layer heat insulation components) can not be applied to the surface of the antenna because the star clothes (and multi-layer heat insulation components) have no wave-transmitting performance.
Disclosure of Invention
The invention aims to overcome the technical defects and provides a silver ant-imitated wave-transmitting bionic reflection layer, which utilizes the principle that silver ants reflect sunlight to bionically copy a micro-nano structure of which the wide frequency band section of the surface of the silver ants reflects heat flow outside the sun, can be used for heat prevention and heat dissipation of the surface of an antenna and further achieves a good heat control effect.
In order to achieve the purpose, the invention provides a preparation method of a silver ant-imitated wave-transmitting bionic reflecting layer, which comprises the following steps:
a PDMS bionic negative template is constructed by overturning and copying a silver ant biological template,
and (3) coating glue solution on the PDMS bionic negative template to prepare the silver ant imitated wave-transmitting bionic reflecting layer.
As an improvement of the above method, the building of the PDMS bionic negative template by the biological template rollover and replica comprises:
mixing a PDMS prepolymer and a cross-linking agent thereof according to the weight ratio of 10: 1-5: 1, stirring at room temperature for more than 10min to prepare a PDMS solution;
cleaning, drying and fixing the biological template on a substrate;
pouring the PDMS solution on a biological template, vacuumizing for 20-30 minutes, and removing internal bubbles;
keeping the temperature at 65-75 ℃ for more than 2h to solidify the PDMS solution, then soaking the PDMS solution in n-hexane until the PDMS solution expands, and taking out the biological template to obtain the PDMS bionic negative template.
As an improvement of the method, the preparation of the silver ant-imitated wave-transmitting bionic reflecting layer by coating glue solution on the PDMS bionic negative template specifically comprises the following steps:
pouring the glue solution on a PDMS bionic negative template, vacuumizing for 20-30 minutes, removing internal bubbles, standing at 60 ℃, drying, and demoulding in a pure hot water bath to obtain the silver ant imitation wave-transparent bionic reflecting layer.
As an improvement of the method, the glue solution is polyimide, silicon rubber or F46 material.
As an improvement of the method, the preparation of the silver ant-imitated wave-transmitting bionic reflecting layer by coating glue solution on the PDMS bionic negative template specifically comprises the following steps:
pouring SBS solution on PDMS bionic negative template, putting it into ventilation hood until solidifying;
and after complete curing, soaking the silver ant-imitated material in normal hexane until the silver ant-imitated material expands, and then demolding to obtain the silver ant-imitated wave-transmitting bionic reflecting layer.
The invention also provides a silver ant-imitated wave-transmitting bionic reflection layer which is prepared by the preparation method, the cross section of the surface hair layer structure of the silver ant-imitated wave-transmitting bionic reflection layer is triangular, two side edges of the triangular are in a corrugated shape and cover the surface of a silver ant in the same direction, the side length of the triangular is 2-3 mu m, and the diameter of the corrugation on the side is 100-300 nm.
The invention also provides an inflatable wave-transparent heat-proof assembly, which comprises the following components from top to bottom: the silver-ant-imitated wave-transmitting bionic reflecting layer, the inflating layer and the infrared heat dissipation layer are arranged on the surface of the base; the inflatable layer is inflated by the inflating device when in orbit, so that the whole assembly structure is adjusted to a certain filling state.
As an improvement of the device, the infrared heat dissipation layer is formed by adding SiO into the polymer matrix material2One or more of glass micro-rods, glass helices, and glass microspheres.
As an improvement of the device, the infrared heat dissipation layer further comprises an adhesive layer used for adhering the film on the surface of the spacecraft or the structural support.
The invention has the advantages that:
1. according to the invention, the principle that silver ants reflect sunlight by means of a micro-nano hair layer structure is utilized, the micro-nano structure that the wide frequency band section of the surface of the silver ants reflects heat flow outside the sun is biomimetically copied, the use of a metal layer is avoided, and the silver ant has good wave-transmitting performance under the condition of sunlight-proof performance;
2. the inflatable wave-transmitting heat-proof component disclosed by the invention utilizes the bionic microstructure of the silver ants to the greatest extent, has good wave-transmitting heat-proof effects while giving consideration to wave transmission, and can realize different heat control effects by regulating and controlling the microstructure of the component;
3. the inflatable wave-transmitting and heat-preventing component has wave-transmitting and heat-preventing performances, and has lighter weight, easy installation and weight reduction compared with a heat-preventing wave-transmitting foam material which can be used by a satellite-borne antenna;
4. the adjustment and control of the filling state of the inflatable layer can adjust the tightening state of the surface heat-proof microstructure to a certain degree, and plays a role in micro adjustment and control on the equivalent thermal control parameters of the film layer structure;
5. the invention adds gas into the film, so that the whole assembly has better temperature uniformity.
Drawings
FIG. 1 is a schematic diagram of a preparation process of a silver ant-like wave-transparent bionic reflection layer of the invention;
FIG. 2 is a schematic structural diagram of a wave-transparent bionic reflective layer of a silver ant imitation of the invention;
fig. 3 shows the result of duplicating the microstructure of the surface layer of the spotted-ant.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.
The invention provides a silver ant-imitated wave-transmitting bionic reflecting layer based on bionics, and provides a manufacturing method thereof, wherein the film can be applied to systems such as a satellite-borne antenna system and the like, has the characteristics of broadband low solar absorption ratio and high infrared emission, can be manufactured into an adhesive tape form, and is convenient to use.
The silver ant-like wave-transmitting bionic reflecting layer has a complex structure with a fine depth-diameter ratio, and the manufacturing and implementation of the silver ant-like wave-transmitting bionic reflecting layer are difficult, and the application development and research of the silver ant-like wave-transmitting bionic reflecting layer are directly limited by the manufacturing and implementation of the silver ant-like structure. The method provides a solution for manufacturing the biological template by overturning, laminating and splicing the biological template. The complex microstructure of the heat-proof bionic structure can be better manufactured by directly turning the membrane and laminating the membrane, and the complex microstructure cannot be directly manufactured by adopting other manufacturing methods.
As shown in fig. 1, the invention provides a preparation method of a silver ant-like wave-transparent bionic reflecting layer, which comprises the following steps:
step 1) constructing a PDMS negative template through overturning and copying the silver ant biological template, which specifically comprises the following steps:
mixing a PDMS prepolymer and a cross-linking agent thereof according to the weight ratio of 10: 1-5: 1, stirring at room temperature for more than 10min to prepare a PDMS solution; wherein the cross-linking agent is a commercially available curing agent matched with the PDMS prepolymer.
Cleaning, drying and fixing the biological template on a substrate;
pouring the PDMS solution on a biological template, vacuumizing for 20-30 minutes, and removing internal bubbles;
keeping the temperature at 65-75 ℃ for more than 2h to solidify the PDMS solution, then soaking the PDMS solution in n-hexane until the PDMS solution expands, and taking out the biological template to obtain the PDMS negative template.
And 2) coating glue solution on the PDMS bionic negative template to prepare the silver ant imitated wave-transmitting bionic reflecting layer.
There are two embodiments of this step:
mode 1:
pouring the glue solution on a PDMS bionic negative template, vacuumizing for 20-30 minutes, removing internal bubbles, standing at 60 ℃, drying, and demoulding in a pure hot water bath to obtain the silver ant imitation wave-transparent bionic reflecting layer.
The selection of glue solution materials is combined with aerospace application, such as polyimide materials or silicon rubber with good radiation resistance commonly used in aerospace, F46 materials, SBS materials and NOA61 materials with good replication in duplication in a turnover duplication mold, and the like, so that the surface layer structure of the silver ants is replicated, wherein the polyimide materials are materials commonly used in aerospace engineering, and the silver ant bionic adhesive tape component prepared from the polyimide materials is expected to be implemented in a large area and has wide application prospect.
Mode 2
Pouring SBS solution on PDMS bionic negative template, putting it into ventilation hood until solidifying;
and after complete curing, soaking the silver ant-imitated material in normal hexane until the silver ant-imitated material expands, and then demolding to obtain the silver ant-imitated wave-transmitting bionic reflecting layer.
According to the requirement of testing a space thermal control sample, the silver ant-like wave-transmitting bionic reflection layer can be spliced to form a large area for manufacturing.
The invention also provides a silver ant-imitated wave-transmitting bionic reflection layer which is prepared by the preparation method, the cross section of a surface hair layer structure of the silver ant-imitated wave-transmitting bionic reflection layer is triangular, two side edges of the triangular are in a corrugated shape and cover the surface of a silver ant in the same direction, the side length of the triangular is 2-3 mu m, and the diameter of the corrugation on the side is 100-300 nm. As shown in fig. 2.
Fig. 3 shows that another arrow and ant living in a high-temperature desert environment is used as a template to manufacture the ant body surface microstructure, and an arrow and ant surface replication structure shown in fig. 2 is manufactured by using a relatively low-cost arrow and ant as a template and performing mold turnover and replication. The result shows that the ant wool layer microstructure has reproducibility, and a filamentous wool structure with the dimension of 1-2 mu m can be prepared.
The invention also provides an inflatable wave-transparent heat-proof assembly, which comprises the following components from top to bottom: the silver-ant-imitated wave-transmitting bionic reflecting layer, the inflating layer and the infrared heat dissipation layer are arranged on the surface of the base; when the rail is applied, the inflatable layer is inflated by the inflating device when the rail is applied, so that the structure is unfolded and supported, or is adjusted to a certain filling state.
The infrared heat dissipation layer is formed by adding SiO into a polymer base material2One or more of glass micro-rods, glass helices, and glass microspheres. The infrared heat dissipation layer also comprises a layer of adhesive layer used for adhering the film on the surface of the spacecraft or the structural support.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A preparation method of a silver ant-imitated wave-transparent bionic reflection layer comprises the following steps:
a PDMS bionic negative template is constructed by overturning and copying a silver ant biological template,
and (3) coating glue solution on the PDMS bionic negative template to prepare the silver ant imitated wave-transmitting bionic reflecting layer.
2. The method for preparing the silver ant-imitated wave-transmitting bionic reflecting layer according to claim 1, wherein the constructing of the PDMS bionic negative template through the biological template rollover and replica comprises the following specific steps:
mixing a PDMS prepolymer and a cross-linking agent thereof according to the weight ratio of 10: 1-5: 1, stirring at room temperature for more than 10min to prepare a PDMS solution;
cleaning, drying and fixing the biological template on a substrate;
pouring the PDMS solution on a biological template, vacuumizing for 20-30 minutes, and removing internal bubbles;
keeping the temperature at 65-75 ℃ for more than 2h to solidify the PDMS solution, then soaking the PDMS solution in n-hexane until the PDMS solution expands, and taking out the biological template to obtain the PDMS bionic negative template.
3. The method for preparing the silver ant-like wave-transmitting bionic reflecting layer according to claim 2, wherein the step of coating glue solution on the PDMS bionic negative template to prepare the silver ant-like wave-transmitting bionic reflecting layer specifically comprises the following steps:
pouring the glue solution on a PDMS bionic negative template, vacuumizing for 20-30 minutes, removing internal bubbles, standing at 60 ℃, drying, and demoulding in a pure hot water bath to obtain the silver ant imitation wave-transparent bionic reflecting layer.
4. The preparation method of the silver ant-like wave-transmitting bionic reflecting layer according to claim 3, wherein the glue solution is polyimide, silicon rubber or F46 material.
5. The method for preparing the silver ant-like wave-transmitting bionic reflecting layer according to claim 2, wherein the step of coating glue solution on the PDMS bionic negative template to prepare the silver ant-like wave-transmitting bionic reflecting layer specifically comprises the following steps:
pouring SBS solution on PDMS bionic negative template, putting it into ventilation hood until solidifying;
and after complete curing, soaking the silver ant-imitated material in normal hexane until the silver ant-imitated material expands, and then demolding to obtain the silver ant-imitated wave-transmitting bionic reflecting layer.
6. A silver ant-imitated wave-transmitting bionic reflection layer is prepared by the preparation method of any one of claims 1 to 5, and is characterized in that the cross section of a surface hair layer structure of the silver ant-imitated wave-transmitting bionic reflection layer is triangular, two side edges of the triangular are in a corrugated shape and cover the surface of a silver ant in the same direction, the side length of the triangular is 2-3 microns, and the diameter of the corrugated on the side is 100-300 nm.
7. An inflatable wave-transparent heat-proof assembly, characterized in that the assembly comprises from top to bottom: the silver ant-imitated wave-transparent bionic reflection layer, the inflation layer and the infrared heat dissipation layer of claim 6; the inflatable layer is inflated by the inflating device when in orbit, so that the whole assembly structure is adjusted to a certain filling state.
8. The air-filled wave-transparent and heat-proof assembly as claimed in claim 7, wherein the infrared heat dissipation layer is formed by adding SiO into the polymer matrix material2One or more of glass micro-rods, glass helices, and glass microspheres.
9. The inflatable, wave-transparent and thermal protection assembly of claim 7 or 8, further comprising a glue layer on the outside of the infrared heat sink layer for adhering the film to the surface of the spacecraft or to the structural support.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911300922.3A CN111113752A (en) | 2019-12-17 | 2019-12-17 | Preparation method of silver ant-imitated wave-transmitting bionic reflecting layer and inflatable wave-transmitting heat-proof assembly |
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| CN201911300922.3A CN111113752A (en) | 2019-12-17 | 2019-12-17 | Preparation method of silver ant-imitated wave-transmitting bionic reflecting layer and inflatable wave-transmitting heat-proof assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113751A (en) * | 2019-12-17 | 2020-05-08 | 中国科学院国家空间科学中心 | Preparation method of silver ant-imitated wave-transmitting bionic reflecting layer and multilayer flexible thermal control assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986608A (en) * | 2012-03-27 | 2017-07-28 | 纳米及先进材料研发院有限公司 | Novel inorganic heat-proof coating material |
| CN110201871A (en) * | 2019-07-04 | 2019-09-06 | 北京印刷学院 | Settling methods prepare butterfly wing/colloidal crystal microsphere composite structured colored film method |
| CN110216924A (en) * | 2019-05-31 | 2019-09-10 | 宁波瑞凌新能源科技有限公司 | A kind of recombination radiation refrigeration film |
| CN111113751A (en) * | 2019-12-17 | 2020-05-08 | 中国科学院国家空间科学中心 | Preparation method of silver ant-imitated wave-transmitting bionic reflecting layer and multilayer flexible thermal control assembly |
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- 2019-12-17 CN CN201911300922.3A patent/CN111113752A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106986608A (en) * | 2012-03-27 | 2017-07-28 | 纳米及先进材料研发院有限公司 | Novel inorganic heat-proof coating material |
| CN110216924A (en) * | 2019-05-31 | 2019-09-10 | 宁波瑞凌新能源科技有限公司 | A kind of recombination radiation refrigeration film |
| CN110201871A (en) * | 2019-07-04 | 2019-09-06 | 北京印刷学院 | Settling methods prepare butterfly wing/colloidal crystal microsphere composite structured colored film method |
| CN111113751A (en) * | 2019-12-17 | 2020-05-08 | 中国科学院国家空间科学中心 | Preparation method of silver ant-imitated wave-transmitting bionic reflecting layer and multilayer flexible thermal control assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111113751A (en) * | 2019-12-17 | 2020-05-08 | 中国科学院国家空间科学中心 | Preparation method of silver ant-imitated wave-transmitting bionic reflecting layer and multilayer flexible thermal control assembly |
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