CN105024159B - The preparation method of high temperature resistant wave-permeable resin base antenna shade assembly - Google Patents
The preparation method of high temperature resistant wave-permeable resin base antenna shade assembly Download PDFInfo
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- CN105024159B CN105024159B CN201510487468.2A CN201510487468A CN105024159B CN 105024159 B CN105024159 B CN 105024159B CN 201510487468 A CN201510487468 A CN 201510487468A CN 105024159 B CN105024159 B CN 105024159B
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Abstract
The invention discloses a kind of preparation method of high temperature resistant wave-permeable resin base antenna shade assembly, the preparation method uses the high-strength glass fibre yarn of high-purity and strengthens resistant to elevated temperatures PMR types polyimides, it is molded by the way of hot moulding, by pasting screen layer and surface coated with resins after shaping, reach low cost, wave transparent, resistant to elevated temperatures requirement, solve the shaping of traditional antenna cover and the shortcomings that thermosol high temperature sintering shaping cycle is long, cost is high is worked out and then impregnated using fiber, be a kind of very strong forming method of feasibility of antenna house assembly forming.
Description
Technical field
The invention belongs to antenna house preparation field, and in particular to a kind of preparation of high temperature resistant wave-permeable resin base antenna shade assembly
Method.
Background technology
With the needs of development and the modernized war of aeronautical and space technology, the flight Mach number of aerospace flight vehicle is not
Disconnected to improve, the antenna house in flight vehicle aerodynamic power and Aerodynamic Heating maximum extreme higher position must bear higher temperature and thermal shock,
This proposes very high requirement to the electromagnetic wave transparent material used in antenna house.Present high temperature wave-transparent material should typically meet following want
Ask：Excellent electrical property, dielectric constant and loss tangent will be small；Enough mechanical strength and appropriate is kept at high temperature
Modulus of elasticity；Good thermal impact and heat resistance；Stand the environmental conditions such as weathering, radiation；It can produce and economy.But
The ceramic base antenna house molding cycle of thermosol high temperature sintering shaping is worked out and then impregnated to the antenna house produced at present using fiber
Long, cost is high；The antenna house temperature tolerance prepared using epoxy resin or bismaleimide resin is low (typically not greater than 250 DEG C), and not
Resistance to ablation.
The content of the invention
The purpose of the present invention is aiming at above-mentioned deficiency, there is provided a kind of preparation of high temperature resistant wave-permeable resin base antenna shade assembly
Method, technique is simple, cost is low.
To achieve the above object, the preparation method of the high temperature resistant wave-permeable resin base antenna shade assembly designed by the present invention includes
Following steps：
1) by Thermocurable polyimide and high-strength glass fibre yarn by weight 100：40~60 are mixed with premix；
2) pressurization, solidification in the die cavity of mould are added the premix to and prepares blank；
3) encapsulation steps 2) in the outer surrounding of blank form screen layer；
4) locating and machining pilot hole；
5) obtained antenna shade assembly is coated to outer surface of the blank in addition to screen layer with resin.
Further, the Thermocurable polyimide is PMR type polyimides.
Further, it for 99.9%, non-twist, size is the high-strength of epoxy .K that the high-strength glass fibre yarn, which uses purity,
Glass fiber yarn, length are 5~8mm.
Further, in the step 1), Thermocurable polyimide is with high-strength glass fibre yarn by weight 100：40~
After 60 mixing, stirring, it is placed under ultraviolet illuminator and toasts 60~120 minutes, then manual sub-wire, obtains the pre- of uniformity
Batch mixing.
Further, in the step 2), premix is added in the die cavity of mould, and pressurize 5~10MPa, according to 150 DEG C
~200 DEG C/5h is solidified, and is then cooled to depanning after room temperature, and solidify afterwards are being carried out according to 250 DEG C~350 DEG C/2h.
Further, in the step 3), the copper foil or aluminium foil that thickness is 0.1~0.3mm are coated on the glue of anchor 101
The outer surrounding of blank forms screen layer.
Further, in the step 4), locating and machining pilot hole：Add blank with diamond cutter machine according to the design needs
The positioning pilot hole of part.
Further, in the step 5), outer surface of the blank in addition to screen layer is carried out with polyorganosiloxane resin
Coating.
Compared with prior art, the present invention has advantages below：
1) preparation method of the present invention is sub- using the high-strength glass fibre yarn and the resistant to elevated temperatures PMR types polyamides of enhancing of high-purity
Amine, be molded by the way of hot moulding, by pasting screen layer and surface coated with resins after shaping, reach low cost, wave transparent,
Resistant to elevated temperatures requirement, solve the shaping of traditional antenna cover and the thermosol high temperature sintering shaping cycle is worked out and then impregnated using fiber
Long, the shortcomings that cost is high, be a kind of very strong forming method of feasibility of antenna house assembly forming；
2) shaping antenna shade assembly can in short term resistance to 600~800 DEG C of high temperature, be resistant to 380 DEG C for a long time；Molding cycle substantially may be used
1 or more than one piece/day are realized, more traditional quartzy composite ceramics antenna shade assembly (cycle usually requires for 2~March) substantially reduces
Cycle, reduce cost.
Brief description of the drawings
Fig. 1 is the structure of the main view of the present embodiment antenna shade assembly；
Fig. 2 is Fig. 1 schematic top plan view.
Wherein：Screen layer 1, pilot hole 2.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, is easy to more clearly understand this
Invention, but they do not form to the present invention and limited.
Certain model antenna shade assembly as shown in accompanying drawing 1,2,
Embodiment 1
Preparation method comprises the following steps：
1) by PMR types polyimides and high-strength glass fibre yarn by weight 100：After 43 being sufficiently mixed, stirring, it is placed on
Toasted 90 minutes under ultraviolet illuminator, cool down defensive position work point silk, silvalin beam is separately obtained to the premix of uniformity；
Wherein：High-strength glass fibre yarn uses purity as the 99.9%, high-strength glass fibre that non-twist, size is epoxy .K
Yarn, length are 5~8mm；
2) add the premix in the die cavity of mould, be placed on the forcing press of bolster heating and be molded, added
Pressure pressure is 6MPa, is solidified according to 180 DEG C/5h, is then cooled to depanning after room temperature, in the system according to 300 DEG C/2h
Carry out solidify afterwards and prepare blank；
3) the outer surrounding that the aluminium foil that thickness is 0.2mm is coated on to blank with the glue of anchor 101 forms screen layer 1；
4) 10 pilot holes 2 of blank are added with diamond cutter machine according to the design needs, each 5 of left and right is arranged symmetrically；
5) outer surface of the blank in addition to screen layer is coated with polyorganosiloxane resin, shape after normal temperature cure 48h
Into antenna house component.
Performance test will be carried out with stove sample and antenna shade assembly with what above-mentioned antenna house was molded, be specifically shown in Table 1：
The antenna house assembly property of table 1
In addition, the antenna shade assembly produced according to the method described above is that ablation 38 seconds is without exception at 600~800 DEG C, at 380 DEG C
Ablation 30min is without exception.
Embodiment 2
Preparation method comprises the following steps：
1) by PMR types polyimides and high-strength glass fibre yarn by weight 100：After 50 being sufficiently mixed, stirring, it is placed on
Toasted 98 minutes under ultraviolet illuminator, cool down defensive position work point silk, silvalin beam is separately obtained to the premix of uniformity；
Wherein：High-strength glass fibre yarn uses purity as the 99.9%, high-strength glass fibre that non-twist, size is epoxy .K
Yarn, length are 8~12mm；
2) add the premix in the die cavity of mould, be placed on the forcing press of bolster heating and be molded, added
Pressure pressure is 8MPa, is solidified according to 150 DEG C/5h, is then cooled to depanning after room temperature, in the system according to 350 DEG C/2h
Carry out solidify afterwards and prepare blank；
3) the outer surrounding that the aluminium foil that thickness is 0.2mm is coated on to blank with the glue of anchor 101 forms screen layer；
4) 10 pilot holes of blank are added with diamond cutter machine according to the design needs, each 5 of left and right is arranged symmetrically；
5) outer surface of the blank in addition to screen layer is coated with polyorganosiloxane resin, shape after normal temperature cure 48h
Into antenna house component.
Performance test will be carried out with stove sample and antenna shade assembly with what above-mentioned antenna house was molded, be specifically shown in Table 2：
The antenna house assembly property of table 2
In addition, the antenna shade assembly produced according to the method described above is that ablation 38 seconds is without exception at 600~800 DEG C, at 380 DEG C
Ablation 30min is without exception.
Embodiment 3
Preparation method comprises the following steps：
1) by PMR types polyimides and high-strength glass fibre yarn by weight 100：After 60 being sufficiently mixed, stirring, it is placed on
Toasted 120 minutes under ultraviolet illuminator, cool down defensive position work point silk, silvalin beam is separately obtained to the premix of uniformity；
Wherein：High-strength glass fibre yarn uses purity as the 99.9%, high-strength glass fibre that non-twist, size is epoxy .K
Yarn, length are 12~15mm；
2) add the premix in the die cavity of mould, be placed on the forcing press of bolster heating and be molded, added
Pressure pressure is 10MPa, is solidified according to 200 DEG C/5h, is then cooled to depanning after room temperature, in the system according to 350 DEG C/2h
Degree has carried out solidify afterwards and has prepared blank；
3) the outer surrounding that the aluminium foil that thickness is 0.2mm is coated on to blank with the glue of anchor 101 forms screen layer；
4) 10 pilot holes of blank are added with diamond cutter machine according to the design needs, each 5 of left and right is arranged symmetrically；
5) outer surface of the blank in addition to screen layer is coated with polyorganosiloxane resin, shape after normal temperature cure 48h
Into antenna house component.
Performance test will be carried out with stove sample and antenna shade assembly with what above-mentioned antenna house was molded, be specifically shown in Table 1：
The antenna house assembly property of table 1
In addition, the antenna shade assembly produced according to the method described above is that ablation 38 seconds is without exception at 600~800 DEG C, at 380 DEG C
Ablation 30min is without exception.
Claims (6)
- A kind of 1. preparation method of high temperature resistant wave-permeable resin base antenna shade assembly, it is characterised in that：The preparation method is included such as Lower step：1) by Thermocurable polyimide and high-strength glass fibre yarn by weight 100：40~60 are mixed with premix；Thermosetting Polyimides is PMR type polyimides, and Thermocurable polyimide is with high-strength glass fibre yarn by weight 100：40~60 mixing, After stirring, it is placed under ultraviolet illuminator and toasts 60~120 minutes, then manual sub-wire, obtains the premix of uniformity；2) pressurization, solidification in the die cavity of mould are added the premix to and prepares blank；3) encapsulation steps 2) in the outer surrounding of blank form screen layer (1)；4) locating and machining pilot hole (2)；5) obtained antenna shade assembly is coated to outer surface of the blank in addition to screen layer (1) with resin.
- 2. the preparation method of high temperature resistant wave-permeable resin base antenna shade assembly according to claim 1, it is characterised in that：It is described High-strength glass fibre yarn uses purity as 99.9%, the high-strength glass fibre yarn that non-twist, size is epoxy .K, length be 5~ 8mm。
- 3. the preparation method of high temperature resistant wave-permeable resin base antenna shade assembly according to claim 1, it is characterised in that：It is described In step 2), premix is added in the die cavity of mould, and pressurize 5~10MPa, is solidified according to 150 DEG C~200 DEG C/5h, with After be cooled to depanning after room temperature, according to 250 DEG C~350 DEG C/2h carry out solidify afterwards.
- 4. the preparation method of high temperature resistant wave-permeable resin base antenna shade assembly according to claim 1, it is characterised in that：It is described In step 3), the outer surrounding that copper foil or aluminium foil that thickness is 0.1~0.3mm are coated on to blank with the glue of anchor 101 is formed Screen layer.
- 5. the preparation method of high temperature resistant wave-permeable resin base antenna shade assembly according to claim 1, it is characterised in that：It is described In step 4), locating and machining pilot hole：Add the positioning pilot hole (2) of blank with diamond cutter machine according to the design needs.
- 6. the preparation method of high temperature resistant wave-permeable resin base antenna shade assembly according to claim 1, it is characterised in that：It is described In step 5), outer surface of the blank in addition to screen layer is coated with polyorganosiloxane resin.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105742810B (en) * | 2016-01-26 | 2018-07-31 | 湖北三江航天江北机械工程有限公司 | The manufacturing method of ultra-temperature ceramic-based composite material ablation previous day irdome cover body |
| FI127815B (en) * | 2017-03-21 | 2019-03-15 | Exel Composites Oyj | Radome casing and method for manufacturing the radome casing |
| CN107134642B (en) * | 2017-04-21 | 2019-11-12 | 航天材料及工艺研究所 | The resistance to 450 DEG C of quartz/composite polyimide material antenna house of one kind and preparation method |
| CN107994338B (en) * | 2017-11-20 | 2021-06-11 | 航天材料及工艺研究所 | Integrated antenna protective cover for Mars detection landing patrol and preparation method thereof |
| CN109346841B (en) * | 2018-09-29 | 2021-03-26 | 芜湖易来达雷达科技有限公司 | Radome manufacturing material identification method, radome, and radome manufacturing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3841162A1 (en) * | 1988-12-07 | 1990-06-13 | Telefunken Systemtechnik | Radome having high-temperature properties |
| CN1536710A (en) * | 2003-04-11 | 2004-10-13 | 北京玻璃钢研究设计院 | Antenna cover for submerged ungerwater ship and its preparation method |
| CN102604187A (en) * | 2012-02-29 | 2012-07-25 | 深圳光启创新技术有限公司 | Antenna housing substrate and preparation method thereof |
| CN103715502A (en) * | 2013-12-19 | 2014-04-09 | 中材科技股份有限公司 | High-wave transmission hollow-structure radome |
-
2015
- 2015-08-11 CN CN201510487468.2A patent/CN105024159B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3841162A1 (en) * | 1988-12-07 | 1990-06-13 | Telefunken Systemtechnik | Radome having high-temperature properties |
| CN1536710A (en) * | 2003-04-11 | 2004-10-13 | 北京玻璃钢研究设计院 | Antenna cover for submerged ungerwater ship and its preparation method |
| CN102604187A (en) * | 2012-02-29 | 2012-07-25 | 深圳光启创新技术有限公司 | Antenna housing substrate and preparation method thereof |
| CN103715502A (en) * | 2013-12-19 | 2014-04-09 | 中材科技股份有限公司 | High-wave transmission hollow-structure radome |
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