CN109866496A - A kind of frequency selects the preparation method of radome exemplar - Google Patents
A kind of frequency selects the preparation method of radome exemplar Download PDFInfo
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- CN109866496A CN109866496A CN201711266430.8A CN201711266430A CN109866496A CN 109866496 A CN109866496 A CN 109866496A CN 201711266430 A CN201711266430 A CN 201711266430A CN 109866496 A CN109866496 A CN 109866496A
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Abstract
The present invention relates to the preparation methods that a kind of frequency selects radome exemplar, it is characterized by: in a kind of manufacturing process based on Meta Materials advanced capabilities radar cover of C sandwich, covering two-sided a period of time is to positive precision in first preparing middle covering and guaranteeing by the way of being etched after first laying, in the preparation process of interior exterior skin, surface state is guaranteed using first solidification polishing, brushing prepreg matrix resin is bonded FSS screen again, while assisting guaranteeing a period of time position precision by the way of paving using laser projection.The present invention realizes the high-precision manufacture of antenna house by the control of dielectric layer surface state, high-precision laying location technology and high-precision lithographic technique.The present invention has good application value and economic benefit in aero-manufacturing technology field.
Description
Fields
The invention belongs to high-performance composite materials fields, are related to a kind of manufacturer based on Meta Materials advanced capabilities radar cover
Method.
Background technique
Radome (radome) is installed on plane nose front end, and main function is the wave transparent window as radar antenna
Mouthful, while the device as protection radar antenna, radome will also undertake aerodynamic loading, resist external environment to rebecca
It influences.By introducing FSS screen in the composite dielectric materials of radome, design means can be greatly enriched, radome is met
Frequency choosing requires, and has Great significance to the design of course of new aircraft.
Existing radome is mainly based upon composite dielectric materials, not with the impedance matching of air in large angle incidence
It is good, the high wave transmission rate requirement of ultra wide band cannot be reached.Moreover, traditional sucrose material effective dielectric constant selectable range very little,
And to reach relatively good performance, the thickness of radome various pieces is it is possible that inconsistent phenomenon.By loading super material
Material, can design effective dielectric constant as desired, to greatly enrich design means.The cover wall structure of C- sandwich is strong
Degree makes moderate progress, and has preferable broadband character.Multilayer FSS screen is introduced in C- sandwich, to obtain ultra wide band
The Meta Materials radome of high wave transmission rate.
There is a kind of preparation method of interlayer frequency-selective surfaces composite material in the prior art, prepares glass fabric and ring
The prepreg and frequency-selective surfaces film of oxygen resin, and blanking is carried out according to blanking figure, it requires to carry out according to design and processes pre-
Film, is added among prepreg overlay, then carries out suction glue into vacuum tank by the paving of leaching material and frequency-selective surfaces film, inhales
Surface state is observed after glue and makes respective handling；By treated, exemplar is vacuumized and is solidified；After coming out of the stove as needed
It is machined out.The preparation method of this interlayer frequency-selective surfaces composite material, it is possible to frequency-selective surfaces film be caused to rise
Pleat impacts electrical property so that changing frequency selects a period of time position.
Summary of the invention
Goal of the invention
The present invention is mentioned by the control of dielectric layer surface state, high-precision laying location technology and high-precision lithographic technique
High frequency selects the position precision in metal a period of time in radome, to guarantee the high-precision manufacture of radome.
Inventive technique scheme
The technical scheme is that a kind of frequency selects the preparation method of radome (structure such as attached drawing 1), including following step
It is rapid:
Step 1: choosing fiber-reinforced modified resin base prepreg preparation media layer, copper-clad laminate prepares FSS screen；
Step 2: being designed according to structure, copper-clad laminate, prepreg, the copper-clad laminate of the corresponding number of plies are successively spread
It is attached on flat plate mold, and carries out compacting solidification, the copper-clad laminate on two sides is performed etching, obtain middle covering；
Step 3: being designed according to structure, by the prepreg paving of the corresponding number of plies on radome mold, and be compacted solid
Change, surface floating glue of polishing after the completion of solidification；
Step 4: in one layer of prepreg matrix resin of the blank surface brush polished, glue-spread presses 20g/m2~40g/m2It is former
Glue calculates, and after room temperature hangs 30min~60min, opens hot wind with hair dryer and removes residual solvent；
Step 5: carrying out the paving of FSS screen at once according to structure design, carry out cutting for FSS screen according to the boundary line of laser projection
It cuts out, finally carries out compacting solidification；
Step 6: the interior honeycomb of pre-setting will be carried out with glue film be bonded with blank, and be compacted solidify；
Step 7: the paving molding and polishing of force-supporting belt in carrying out；
Step 8: middle covering being cut out by drawing, is carried out interior honeycomb with middle covering with glue film be bonded, and is compacted solid
Change；
Step 9: the outer honeycomb of pre-setting being carried out with glue film be bonded with middle covering, and be compacted solidify；
Step 10: carrying out the paving molding and polishing of outer force-supporting belt；
Step 11: will have hole glue film paving on honeycomb and carry out compacting solidification, surface is polished after solidification；
Step 12；There is one layer of prepreg matrix resin of hole film surface brush, glue-spread presses 20g/m2~40g/m2Virgin rubber meter
It calculates, after room temperature hangs 30min~60min, opens hot wind with hair dryer and remove residual solvent；
Step 13: carrying out the paving of FSS screen at once according to structure design, carry out FSS screen according to the boundary line of laser projection
It cuts out, is finally compacted；
Step 14: designed according to structure, by the prepreg paving of the corresponding number of plies on FSS screen, and carry out compacting solidification and
Post-processing, surface floating glue of finally polishing；
Step 15: demoulding and trimming.
The resin matrix of the prepreg can be divided into cyanate resin, epoxy resin, bimaleimide resin, alkynes
Two or more in base silicone resin or above-mentioned resin are compound；Fiber can be divided into quartz fibre and glass fibre；Honeycomb leaching
Stain resin can be phenolic resin, polyimide resin honeycomb, cyanate ester resin, bimaleimide resin, BT resin, PT tree
Two or more in rouge, epoxy resin, alkynyl silicone resin or above-mentioned resin are compound.
The frequency that this patent is related to a kind of C sandwich selects in the manufacturing process of radome, first prepares middle covering and using first
The mode etched after laying guarantee in covering two-sided a period of time to positive precision, in the preparation process of interior exterior skin, beaten using first solidification
Mill guarantees that surface state, then brushing prepreg matrix resin are bonded FSS screen, while assisting protecting by the way of paving using laser projection
Demonstrate,prove a period of time position precision；The glue-spread presses 20g/m2~40g/m2Virgin rubber calculates, room temperature open assembly time 30min~60min.
The technical effect of invention
The present invention provides the preparation methods that a kind of frequency selects radome.The present invention passes through the control of dielectric layer surface state, height
Precision laying location technology and high-precision lithographic technique realize the high-precision manufacture of antenna house.The present invention is in aeronautical manufacture skill
There are good application value and economic benefit in art field.
Detailed description of the invention
Fig. 1 is structure of the invention figure
Specific embodiment
It is of the present invention based on select frequently the electrical property of radome depend primarily on metal a period of time distribution Design consistency,
And the paving positioning of the surface state of FSS screen bonding plane, thickness of dielectric layers uniformity, FSS screen all can be to the position in metal a period of time
Precision impacts, and for this problem, the present invention provides the preparation methods that a kind of frequency selects radome, improves C sandwich
Based on the position precision for selecting metal a period of time in radome frequently.
Below with reference to specific embodiment, technical scheme of the present invention is further explained.
Embodiment
The quartz fibre enhancing modified cyanate rouge prepreg that preparation meets design requirement is spare；According to design requirement, by one
Successively paving and carries out vacuumizing pressure on flat plate mold for layer copper-clad laminate, two layers of prepreg, one layer of copper-clad laminate
It is real, guarantee that copper-clad laminate surface does not have fold, copper-clad laminate is performed etching after solidification, obtains middle covering；
According to design requirement, by one layer of prepreg paving on radome mold, and compacting solidification is carried out, after the completion of solidification
Polishing surface floating glue, and it is clean with ethanol；In one layer of prepreg matrix resin of the blank surface brush polished, glue-spread is pressed
30g/m2~35g/m2Virgin rubber calculates, and after room temperature hangs 30min, opens hot wind with hair dryer and removes residual solvent；It carries out at once
FSS screen paving carries out cutting out for FSS screen according to the boundary line of laser projection, vacuumizes solid after being compacted guarantee FSS screen corrugationless
Change；The interior honeycomb of pre-setting carried out with cyanate ester glue film be bonded with blank, and vacuumizes compacting solidification；Force-supporting belt in carrying out
Paving molding and polishing；
Middle covering is cut out by drawing, is carried out interior honeycomb with middle covering with glue film be bonded, and it is solid to vacuumize compacting
Change；The outer honeycomb of pre-setting carried out with glue film be bonded with middle covering, and vacuumizes compacting solidification；Carry out the paving of outer force-supporting belt
Molding and polishing；
Cyanate ester glue film paving on honeycomb and vacuumize compacting solidification, after surface is polished, and use second
Alcohol wiped clean；In one layer of prepreg matrix resin of film surface brush, glue-spread presses 30g/m2~35g/m2Virgin rubber calculates, room temperature
After hanging 30min, hot wind is opened with hair dryer and removes residual solvent；The paving of FSS screen is carried out at once, according to the boundary of laser projection
Line carries out FSS screen and cuts out, and vacuumizes compacting and guarantees on one layer of prepreg paving FSS screen after FSS screen corrugationless, and is pressed
Real solidification and post-processing, finally polish surface floating glue, demoulding and trimming.Electric performance test result meets design requirement.
Claims (5)
1. the preparation method that a kind of frequency selects radome exemplar, it is characterised in that: in a kind of C sandwich based on the high property of Meta Materials
Can radome manufacturing process in, first prepare middle covering and using elder generation laying after etch by the way of guarantee in covering two-sided a period of time pair
Positive precision in the preparation process of interior exterior skin, guarantees surface state using first solidification polishing, then brushing prepreg matrix resin is viscous
FSS screen is connect, while assisting guaranteeing a period of time position precision by the way of paving using laser projection.
2. preparation method as described in claim 1, it is characterised in that: the following steps are included:
Step 1: choosing fiber-reinforced modified resin base prepreg preparation media layer, copper-clad laminate prepares FSS screen；
Step 2: being designed according to structure, by copper-clad laminate, prepreg, the copper-clad laminate of the corresponding number of plies, successively paving exists
On flat plate mold, and compacting solidification is carried out, the copper-clad laminate on two sides is performed etching, obtains middle covering；
Step 3: it is designed according to structure, by the prepreg paving of the corresponding number of plies on radome mold, and carries out compacting solidification, Gu
Polishing surface floating glue after the completion of changing；
Step 4: in one layer of prepreg matrix resin of the blank surface brush polished, glue-spread presses 20g/m2~40g/m2Virgin rubber meter
It calculates, after room temperature hangs 30min~60min, opens hot wind with hair dryer and remove residual solvent；
Step 5: it is designed according to structure, carries out the paving of FSS screen at once, carry out cutting out for FSS screen according to the boundary line of laser projection,
Finally carry out compacting solidification；
Step 6: the interior honeycomb of pre-setting will be carried out with glue film be bonded with blank, and be compacted solidify；
Step 7: the paving molding and polishing of force-supporting belt in carrying out；
Step 8: middle covering being cut out by drawing, is carried out interior honeycomb with middle covering with glue film be bonded, and is compacted solidify；
Step 9: the outer honeycomb of pre-setting being carried out with glue film be bonded with middle covering, and be compacted solidify；
Step 10: carrying out the paving molding and polishing of outer force-supporting belt；
Step 11: will have hole glue film paving on honeycomb and carry out compacting solidification, surface is polished after solidification；
Step 12；There is one layer of prepreg matrix resin of hole film surface brush, glue-spread presses 20g/m2~40g/m2Virgin rubber calculates,
After room temperature hangs 30min~60min, hot wind is opened with hair dryer and removes residual solvent；
Step 13: the paving of FSS screen is carried out at once according to structure design, carries out cutting out for FSS screen according to the boundary line of laser projection,
Finally it is compacted；
Step 14: being designed according to structure, by the prepreg paving of the corresponding number of plies on FSS screen, and carry out compacting solidification and rear place
Reason, surface floating glue of finally polishing；
Step 15: demoulding and trimming.
3. preparation method as claimed in claim 2, it is characterised in that: the resin matrix of the prepreg is cyanate resin,
Two or more in epoxy resin, bimaleimide resin, alkynyl silicone resin or above-mentioned resin are compound.
4. preparation method as claimed in claim 2, it is characterised in that: the fiber is quartz fibre and glass fibre.
5. preparation method as claimed in claim 2, it is characterised in that: honeycomb impregnating resin is phenolic resin, polyimides tree
Rouge honeycomb, cyanate ester resin, bimaleimide resin, BT resin, PT resin, epoxy resin, alkynyl silicone resin or above-mentioned
Two or more in resin are compound.
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| CN201711266430.8A CN109866496A (en) | 2017-12-04 | 2017-12-04 | A kind of frequency selects the preparation method of radome exemplar |
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Cited By (6)
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|---|---|---|---|---|
| CN110518352A (en) * | 2019-07-22 | 2019-11-29 | 中国航空工业集团公司济南特种结构研究所 | A kind of frequency selection foam layer antenna cover structure |
| CN110561775A (en) * | 2019-07-26 | 2019-12-13 | 中国航空工业集团公司济南特种结构研究所 | Preparation method of metamaterial sample piece |
| CN112026205A (en) * | 2020-08-20 | 2020-12-04 | 四川一诺高分子材料科技有限公司 | Manufacturing method of common radar antenna housing |
| CN112590247A (en) * | 2020-11-30 | 2021-04-02 | 江苏新扬新材料股份有限公司 | Method for integrally forming C-sandwich flat radome |
| CN112873899A (en) * | 2020-12-25 | 2021-06-01 | 上海玻璃钢研究院有限公司 | Manufacturing method of broadband high-power-resistant housing |
| CN114454512A (en) * | 2021-12-22 | 2022-05-10 | 上海伽材新材料科技有限公司 | Composite material and functional module integrated structure and forming method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518352A (en) * | 2019-07-22 | 2019-11-29 | 中国航空工业集团公司济南特种结构研究所 | A kind of frequency selection foam layer antenna cover structure |
| CN110561775A (en) * | 2019-07-26 | 2019-12-13 | 中国航空工业集团公司济南特种结构研究所 | Preparation method of metamaterial sample piece |
| CN112026205A (en) * | 2020-08-20 | 2020-12-04 | 四川一诺高分子材料科技有限公司 | Manufacturing method of common radar antenna housing |
| CN112026205B (en) * | 2020-08-20 | 2022-07-01 | 四川一诺高分子材料科技有限公司 | Manufacturing method of common radar antenna housing |
| CN112590247A (en) * | 2020-11-30 | 2021-04-02 | 江苏新扬新材料股份有限公司 | Method for integrally forming C-sandwich flat radome |
| CN112873899A (en) * | 2020-12-25 | 2021-06-01 | 上海玻璃钢研究院有限公司 | Manufacturing method of broadband high-power-resistant housing |
| CN114454512A (en) * | 2021-12-22 | 2022-05-10 | 上海伽材新材料科技有限公司 | Composite material and functional module integrated structure and forming method thereof |
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Application publication date: 20190611 |
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