CN116393341A - Radome surface treatment method - Google Patents
Radome surface treatment method Download PDFInfo
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- CN116393341A CN116393341A CN202310644787.4A CN202310644787A CN116393341A CN 116393341 A CN116393341 A CN 116393341A CN 202310644787 A CN202310644787 A CN 202310644787A CN 116393341 A CN116393341 A CN 116393341A
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- Prior art keywords
- quartz
- hydrophobic
- radome
- repairing material
- binder
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Links
- 238000000034 method Methods 0.000 title claims abstract description 58
- 238000004381 surface treatment Methods 0.000 title claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 136
- 239000010453 quartz Substances 0.000 claims abstract description 115
- 239000000835 fiber Substances 0.000 claims abstract description 87
- 239000010410 layer Substances 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 66
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 65
- 239000011230 binding agent Substances 0.000 claims abstract description 60
- 239000000843 powder Substances 0.000 claims abstract description 46
- 239000002344 surface layer Substances 0.000 claims abstract description 35
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 22
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 21
- 238000007598 dipping method Methods 0.000 claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 230000004048 modification Effects 0.000 claims description 35
- 238000012986 modification Methods 0.000 claims description 35
- 239000000243 solution Substances 0.000 claims description 28
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 239000007864 aqueous solution Substances 0.000 claims description 24
- 229910019142 PO4 Inorganic materials 0.000 claims description 17
- 239000003607 modifier Substances 0.000 claims description 17
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 17
- 239000010452 phosphate Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000000377 silicon dioxide Substances 0.000 claims description 10
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 9
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 229920001223 polyethylene glycol Polymers 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 229910052582 BN Inorganic materials 0.000 claims description 5
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 5
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 claims description 5
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 4
- 239000004111 Potassium silicate Substances 0.000 claims description 4
- 229910052810 boron oxide Inorganic materials 0.000 claims description 4
- 239000000378 calcium silicate Substances 0.000 claims description 4
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 4
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 4
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 4
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 4
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 4
- 235000019353 potassium silicate Nutrition 0.000 claims description 4
- XLUBVTJUEUUZMR-UHFFFAOYSA-B silicon(4+);tetraphosphate Chemical group [Si+4].[Si+4].[Si+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XLUBVTJUEUUZMR-UHFFFAOYSA-B 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims 2
- 238000002360 preparation method Methods 0.000 claims 2
- 230000035939 shock Effects 0.000 abstract description 21
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 description 17
- 238000005336 cracking Methods 0.000 description 8
- 239000011148 porous material Substances 0.000 description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- CFOAUMXQOCBWNJ-UHFFFAOYSA-N [B].[Si] Chemical compound [B].[Si] CFOAUMXQOCBWNJ-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- -1 magnesium fluorosilicate Chemical compound 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
- B05D1/38—Successively applying liquids or other fluent materials, e.g. without intermediate treatment with intermediate treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/005—Repairing damaged coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2301/00—Inorganic additives or organic salts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2507/00—Polyolefins
- B05D2507/01—Polyethylene
- B05D2507/015—Polyethylene modified
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
Abstract
The invention discloses a radome surface treatment method, which comprises the following steps: preparing a contact layer repairing material, and mixing hydrophobic quartz fibers, hydrophobic quartz powder and a first binder; coating the contact layer repairing material on the surface damage part of the radome, and drying and curing at room temperature to form a contact layer; preparing an intermediate layer repairing material, namely reinforcing and modifying quartz fibers to obtain reinforced quartz fibers, and sequentially dipping the surface of the reinforced quartz fibers in a reinforcing auxiliary agent solution and a second binder; coating the intermediate layer repairing material on the surface of the contact layer, and drying and curing at room temperature to form an intermediate layer; coating the surface layer repairing material on the surface of the intermediate layer, and drying and curing at room temperature to form a surface layer; the wave-transmitting performance and the heat-insulating performance of the antenna housing after repair are not reduced, and the antenna housing after repair has good thermal shock resistance.
Description
Technical Field
The invention relates to the technical field of radomes, in particular to a radome surface treatment method.
Background
Radomes are used in the aerospace field to protect antenna systems from the external environment. The application requirement of the radome requires that the radome has good electromagnetic radiation transmission performance and good selectivity on electromagnetic waves with different frequency bands, and the radome usually works in an open air environment and is directly affected by storm, ice and snow, sand dust, solar radiation and the like in the nature, so that the accuracy of the antenna is reduced, the service life of the antenna is shortened, and therefore, the radome is required to have good wave transmission performance, good thermal shock resistance and good heat insulation performance, and the requirements on the surface flatness and the external structure accuracy of the radome are higher.
When the surface of the antenna housing needs to be repaired, high-temperature heat treatment is adopted for curing, but the method has the feasibility before the antenna housing is installed, but after the antenna housing is installed, the method does not generally have the conditions of electricity, gas, heat and the like used for repairing under the external field condition, and if the traditional high-temperature heat treatment mode is adopted for repairing, the linear expansion coefficients of materials such as a metal connecting ring, an adhesive and the like are not matched easily, so that the risk of cracking exists; meanwhile, when the surface of the radome is repaired, water easily enters into the internal pores of the radome, so that the wave-transmitting performance and the heat-insulating performance of the whole radome material are reduced, and the thermal shock resistance of the repaired surface is reduced.
How to repair the surface of the radome at normal temperature, and the thermal shock resistance, wave transmission performance and heat insulation performance of the radome after repair are not reduced becomes a technical problem in the field.
Disclosure of Invention
In order to solve the technical problems, the invention provides a radome surface treatment method, which realizes that the wave-transmitting performance and the heat-insulating performance of the radome after repair are not reduced and the thermal shock resistance of the radome after repair is good by repairing the radome surface in a plurality of layers and solidifying the radome at normal temperature.
The invention provides a radome surface treatment method, which comprises the following steps of:
the first step: preparing a contact layer repairing material; carrying out surface hydrophobic modification on quartz powder to obtain hydrophobic quartz powder, carrying out surface hydrophobic modification on quartz fibers to obtain hydrophobic quartz fibers, and mixing the hydrophobic quartz fibers, the hydrophobic quartz powder and a first binder to obtain the contact layer repairing material;
and a second step of: coating the contact layer repairing material on the surface damage part of the radome, and drying and curing at room temperature to form a contact layer;
and a third step of: preparing an intermediate layer repairing material; carrying out reinforcement modification on the quartz fiber to obtain reinforced quartz fiber, and sequentially dipping the surface of the reinforced quartz fiber into a reinforcement auxiliary agent solution and a second binder to obtain the intermediate layer repair material;
fourth step: coating the intermediate layer repairing material on the surface of the contact layer, and drying and curing at room temperature to form an intermediate layer;
fifth step: preparing a surface layer repairing material; mixing quartz powder with a third binder to obtain the surface layer repairing material;
sixth step: coating the surface layer repairing material on the surface of the intermediate layer, and drying and curing at room temperature to form a surface layer;
preferably, the second binder and the third binder do not contain carbon element.
Further, in the first step, in the process of preparing the contact layer repairing material, the quartz fiber is subjected to enhancement modification before being subjected to surface hydrophobic modification; and (3) dipping a reinforcing auxiliary agent solution on the surface after reinforcing modification, and then carrying out surface hydrophobic modification to obtain the hydrophobic quartz fiber.
The contact layer repairing material comprises the following components in percentage by mass (12-18): (2-8): 1.
further, in the first step, the specific process of carrying out surface hydrophobic modification on the quartz powder is as follows:
mixing the quartz powder with a hydrophobic modifier in alcohol solution, and drying at room temperature after mixing to obtain hydrophobic quartz powder; preferably, the alcohol solution is methanol and/or ethanol;
the specific process for carrying out surface hydrophobic modification on the quartz fiber comprises the following steps:
mixing the quartz fiber with a hydrophobic modifier in alcohol solution, and drying at room temperature after mixing to obtain the hydrophobic quartz fiber; preferably, the alcohol solution is methanol and/or ethanol;
the hydrophobic modifier is one or more of aminopropyl triethoxysilane, vinyl triethoxysilane and dimethyl dichlorosilane;
preferably, the mass ratio of the quartz powder to the hydrophobic modifier is 1: (0.01-0.005); the mass ratio of the quartz fiber to the hydrophobic modifier is 1: (0.01-0.005).
Further, the first binder is one or more of polyethylene oxide (PEO), polyvinyl alcohol (PVA), polyethylene glycol (PEG).
Further, in the first step, the specific process of reinforcing and modifying the quartz fiber is as follows: and (3) soaking the quartz fiber in silica sol, and drying and curing after the soaking is finished to obtain the reinforced quartz fiber.
The mass ratio of the silica fiber to the silica sol attached to the surface of the silica fiber is 1: (0.11-0.15).
Further, the reinforcing aid solution is an aqueous solution of boron nitride and/or boron oxide;
the mass ratio of the quartz fiber to the reinforcing auxiliary agent is 1: (0.22-0.26); preferably, the mass fraction of the reinforcing aid solution is 10-40%.
Further, the second binder comprises an aqueous silicate solution and a first curing agent;
the silicate comprises potassium silicate and/or calcium silicate; the first curing agent comprises magnesium fluosilicate and/or magnesium oxide;
the mass ratio of the quartz fiber to the second binder in the intermediate layer repairing material is (1-3): 1, a step of; preferably, the mass ratio of the silicate aqueous solution to the first curing agent is (0.15-1.05): (2.5X10) -4 -6×10 -3 ) The method comprises the steps of carrying out a first treatment on the surface of the Silicate water-solubleThe mass fraction of the liquid is 30-40%.
Further, in the fifth step, the specific process for preparing the surface layer repair material is as follows: mixing quartz powder and glass powder, and then mixing with a third binder to obtain the surface layer repairing material;
the surface layer repairing material comprises the following components in percentage by mass: (0-3): 1.
further, the third binder comprises an aqueous solution of phosphate and a second curing agent;
the phosphate comprises aluminum phosphate and/or aluminum dihydrogen phosphate; the second curing agent is silicon phosphate and/or aluminum tripolyphosphate; preferably, the mass ratio of the aqueous solution of phosphate to the second curing agent is (0.15-1.05): (2.5X10) -4 -6×10 -3 ) The method comprises the steps of carrying out a first treatment on the surface of the The mass fraction of the aqueous solution of phosphate is 30-40%.
The materials used above are all purchased from conventional sources in the market.
Compared with the prior art, the method has the beneficial effects that in the process of preparing the contact layer repairing material, the quartz powder is subjected to surface hydrophobic modification to obtain hydrophobic quartz powder, and the quartz fiber is subjected to surface hydrophobic modification, so that when the contact layer is bonded by the first adhesive, the bonding strength between the hydrophobic quartz powder and the quartz fiber is high, water is prevented from entering the inner pore of the antenna housing, and the wave-transmitting performance of the antenna housing is prevented from being reduced;
the strength and the impact resistance of the contact layer are further enhanced through the intermediate layer, the second binder is solidified and molded at normal temperature, meanwhile, the quartz fiber is enhanced through enhancement modification and dipping of an enhancement auxiliary agent solution, the ambient environment of the quartz fiber is increased in the use process of the radome, meanwhile, the environmental heat is consumed, the enhancement agent on the surface of the quartz fiber reacts with the enhancement auxiliary agent at the ambient temperature of 600-800 ℃, and therefore the connection strength between the quartz fiber is enhanced, and the environmental impact resistance is enhanced; the second binder is favorable for being converted into ceramic materials at the ambient temperature of more than 800 ℃, so that heat brought by the environment in the working process is consumed, and meanwhile, the strength of the surface of the radome is increased;
the surface layer repairing material comprises quartz powder and a third binder, so that the surface layer repairing material comprising the third binder realizes that the radome has stronger thermal shock performance in a lower environment of the environment temperature in the use process while realizing room temperature curing;
meanwhile, through the second binder of the middle layer and the third binder of the surface layer, the room-temperature curing is realized, meanwhile, the adhesive does not contain C element, and more pores are formed when the ambient temperature is increased after the curing, so that the organic matters of the first binder volatilize through the middle layer and the surface layer when the ambient temperature of the first binder in the contact layer is increased.
Performing reinforcement modification before performing surface hydrophobic modification on the quartz fiber; the contact layer is beneficial to the water in the contact layer repairing material to enter the antenna housing pores when the contact layer is coated on the surface of the antenna housing; meanwhile, through reinforcing modification of the quartz fibers, the effect that when the heat of the environment is transferred to the contact layer in the use process of the radome is achieved, the reinforcing agent on the surface of the quartz fibers reacts with the reinforcing auxiliary agent by utilizing the ambient temperature, so that the connection strength between the quartz fibers is increased, and the shock resistance of the contact layer is improved.
Realizing hydrophobic modification of quartz powder and quartz fiber in the contact layer; and the modifier can consume the ambient temperature to improve the strength of the contact layer.
The normal-temperature solidification of the contact layer is realized, and substances in the contact layer repairing material are prevented from extending into the inner pore of the radome, so that the wave-transmitting performance of the radome is prevented from being reduced.
When the temperature of the contact layer and the quartz fiber in the middle layer is 600-800 ℃, the environment temperature is converted into energy required by the silicon element and the boron element on the surface of the quartz fiber to form the boron silicon compound, namely, the heat of the environment is consumed, the environment temperature is prevented from being transmitted into the antenna housing, and meanwhile, the strength of the middle layer and the contact layer is improved.
The intermediate layer is solidified at normal temperature through the second binder, and when the ambient temperature reaches more than 800 ℃ and is conducted to the intermediate layer, silicate in the second binder is ceramic by utilizing heat in the environment, so that the strength of the intermediate layer is improved; the middle layer has more pores, and on the premise of higher pores, the heat shock resistance of the middle layer is strong, and even when the surface layer is damaged at a very high ambient temperature, the middle layer can still keep the shape of the radome and the heat insulation and wave transmission performance without damage under the thermal shock of the ambient temperature reaching more than 800 ℃;
the second adhesive can be cured at room temperature, but the middle layer has low impact resistance under the condition of low ambient temperature, and the outer surface layer has strong impact resistance under the condition of low ambient temperature, so that the radome still maintains qualified appearance and heat insulation and wave transmission performance under the condition of low ambient temperature in the use process.
The intermediate layer is solidified at normal temperature through the third binder, and when the ambient temperature is below 600 ℃, the heat intensity in the phosphate utilization environment in the third binder is obviously increased, and the heat shock capability of the surface layer is improved when the ambient temperature is below 600 ℃ by combining the glass powder in the surface layer repairing material; on the premise that the surface layer has more pores, the thermal shock resistance is strong under the environment below 600 ℃ by the third binder; the thermal shock resistance of the surface layer is reduced along with the rise of the ambient temperature, but the thermal shock resistance of the middle layer at high temperature is strong, so that the thermal shock resistance of the radome at each temperature section in the whole use process is strong, and the radome keeps qualified appearance and heat insulation and wave transmission performance.
The dielectric loss of the radome treated by the radome surface treatment method is less than or equal to 3 multiplied by 10 at the ambient temperature of 1000 DEG C -3 KV/mm; the heat conductivity coefficient is less than or equal to 0.8W/(m.K); the radome has thermal shock resistance, is rapidly cooled after being kept at the temperature of 1000 ℃ for 15 minutes, has the cycle times of more than or equal to 4 times, and does not generate the phenomena of cracking or damage and the like.
Detailed Description
In order to better understand the technical scheme of the present invention, the present invention will be further described with reference to specific examples.
Embodiment one:
the embodiment provides a radome surface treatment method, which comprises the following steps:
preparing a contact layer repairing material: carrying out surface hydrophobic modification on quartz powder to obtain hydrophobic quartz powder, wherein the specific process of carrying out surface hydrophobic modification on the quartz powder comprises the following steps: mixing the quartz powder with a hydrophobic modifier in ethanol, and drying at room temperature after mixing to obtain hydrophobic quartz powder; carrying out surface hydrophobic modification on the quartz fiber to obtain a hydrophobic quartz fiber, wherein the specific process of carrying out surface hydrophobic modification on the quartz fiber comprises the following steps: mixing the quartz fiber with a hydrophobic modifier in an alcohol solution, and drying at room temperature after mixing to obtain the hydrophobic quartz fiber;
mixing hydrophobic quartz fibers, hydrophobic quartz powder and a first binder; the hydrophobic modifier is aminopropyl triethoxysilane and vinyl triethoxysilane; the first binder is PEO and PVA.
Coating the contact layer repairing material on the surface damage part of the radome, and drying and curing at room temperature to form a contact layer;
the contact layer repairing material comprises 15 mass ratio of quartz fiber, quartz powder and a first binder: 5:1, a step of;
preparing an intermediate layer repairing material: carrying out reinforcement modification on the quartz fiber to obtain reinforced quartz fiber, and sequentially dipping the surface of the reinforced quartz fiber with a reinforcing auxiliary agent solution and a second binder;
coating the intermediate layer repairing material on the surface of the contact layer, and drying and curing at room temperature to form an intermediate layer;
the specific process of reinforcing and modifying the quartz fiber is as follows: dipping the quartz fiber in silica sol, and drying and curing after the dipping is finished to obtain reinforced quartz fiber; the mass fraction of the reinforcing auxiliary agent solution is 25%;
the mass ratio of the silica fiber to the silica sol attached to the surface of the silica fiber is 1: 0.13.
the reinforcing auxiliary agent solution is an aqueous solution of boron nitride;
the mass ratio of the quartz fiber to the reinforcing auxiliary agent is 1:0.24.
the second binder comprises an aqueous silicate solution and a first curing agent; the mass ratio of the silicate aqueous solution to the first curing agent is 0.6:3.13×10 -4 The method comprises the steps of carrying out a first treatment on the surface of the The mass fraction of the silicate aqueous solution is 35%;
the silicate comprises calcium silicate; the first curing agent comprises magnesium fluosilicate;
the mass ratio of the quartz fiber to the second binder in the intermediate layer repairing material is 1.5:1. preparing a surface layer repair material, and mixing quartz powder with a third binder;
coating the surface layer repairing material on the surface of the intermediate layer, and drying and curing at room temperature to form a surface layer;
the mass ratio of the quartz powder to the third binder in the surface layer repairing material is 2: 1, a step of;
the third binder comprises an aqueous solution of phosphate and a second curing agent; the mass ratio of the phosphate aqueous solution to the second curing agent is 0.6:3.13×10 -4 The method comprises the steps of carrying out a first treatment on the surface of the The mass fraction of the aqueous solution of phosphate is 35%;
the phosphate comprises aluminum phosphate and aluminum dihydrogen phosphate; the second curing agent is silicon phosphate and aluminum tripolyphosphate. The second binder and the third binder do not contain carbon element and sodium element. The radome treated by the radome surface treatment method has the dielectric loss of 2.8x10 at the ambient temperature of 1000 DEG C -3 KV/mm; the thermal conductivity is 0.7W/(m.K); the radome has thermal shock resistance, is rapidly cooled after being kept at the temperature of 1000 ℃ for 15 minutes, and has the circulation times of 4 times, and the phenomena of cracking or damage and the like are avoided.
Embodiment two:
the details of this embodiment are the same as those of the first embodiment, and only the differences are described, and the first embodiment is different in that:
in the process of preparing the contact layer repairing material, the hydrophobic modifier is vinyl triethoxysilane and dimethyl dichlorosilane; the contact layer repairing material comprises the following components in percentage by mass: 7:1, a step of; the first binder is PEO and PEG.
Carrying out reinforcing modification before carrying out surface hydrophobic modification on quartz fibers;
after carrying out surface enhancement modification on quartz fibers, dipping an enhancement auxiliary agent solution on the surfaces, and then carrying out surface hydrophobic modification;
the specific process of reinforcing and modifying the quartz fiber is as follows: dipping the quartz fiber in silica sol, and drying and curing after the dipping is finished to obtain reinforced quartz fiber;
the mass ratio of the silica fiber to the silica sol attached to the surface of the silica fiber is 1:0.14.
the reinforcing auxiliary agent solution is an aqueous solution of boron nitride and boron oxide; the mass fraction of the reinforcing auxiliary agent solution is 12%;
the mass ratio of the quartz fiber to the reinforcing auxiliary agent is 1:0.25.
the second binder comprises an aqueous silicate solution and a first curing agent; the mass ratio of the silicate aqueous solution to the first curing agent is 0.18: 5.5X10 -3 The method comprises the steps of carrying out a first treatment on the surface of the The mass fraction of the silicate aqueous solution is 32%;
the silicate comprises potassium silicate and calcium silicate; the first curing agent includes magnesium fluorosilicate and magnesium oxide.
The mass ratio of the aqueous solution of phosphate to the second curing agent is 1.00: 2.9X10 -4 The method comprises the steps of carrying out a first treatment on the surface of the The mass fraction of the aqueous solution of phosphate was 32%.
The mass ratio of the quartz fiber to the second binder in the intermediate layer repairing material is 1.1:1, a step of; the mass ratio of the quartz powder to the glass powder to the third binder in the surface layer repairing material is 2.8:1.5:1.
the radome treated by the radome surface treatment method has the dielectric loss less than or equal to 2.7X10 at the ambient temperature of 1000 DEG C -3 KV/mm; the heat conductivity coefficient is less than or equal to 0.7W/(m.K); the radome has thermal shock resistance, is rapidly cooled after being kept at the temperature of 1000 ℃ for 15 minutes, and has the cycle time of 5 times, and the phenomena of cracking, damage and the like are avoided.
Embodiment III:
the difference between the embodiment and the second embodiment is that in the process of preparing the surface layer repairing material, quartz powder and glass powder are mixed and then mixed with a third binder to obtain the surface layer repairing material;
here, the same contents as those of the first embodiment will not be described in detail, and only the differences will be described:
according to the radome surface treatment method, the mass ratio of the quartz powder to the glass powder to the third binder in the surface layer repair material is 2.5:1.5:1, a step of; in the specific process of preparing the contact layer repairing material, mixing reinforcing auxiliary agent powder, hydrophobic quartz fibers, hydrophobic quartz powder and a first binder to obtain the contact layer repairing material;
the contact layer repairing material comprises the following components in percentage by mass: 3:1, a step of;
the hydrophobic modifier is vinyl triethoxy silane and dimethyl dichloro silane.
The first binder is PVA and PEG;
the mass ratio of the silica fiber to the silica sol attached to the surface of the silica fiber is 1: 0.145.
the reinforcing auxiliary agent solution is an aqueous solution of boron nitride and boron oxide;
the mass ratio of the quartz fiber to the reinforcing auxiliary agent is 1:0.255; the mass fraction of the reinforcing aid solution is 12%.
The second binder comprises an aqueous silicate solution and a first curing agent; the mass ratio of the silicate aqueous solution to the first curing agent is 1.02: 3X 10 -4 The method comprises the steps of carrying out a first treatment on the surface of the The mass fraction of the silicate aqueous solution is 38%;
the silicate comprises potassium silicate; the first curing agent comprises magnesium oxide;
the mass ratio of the quartz fiber to the second binder in the intermediate layer repairing material is 2.5:1.
the mass ratio of the quartz powder to the glass powder to the third binder in the surface layer repairing material is 1.2:2.8:1, a step of; the third binder comprises an aqueous solution of phosphate and a second curing agent; the mass ratio of the phosphate aqueous solution to the second curing agent is 0.19: 5.6X10 -3 The method comprises the steps of carrying out a first treatment on the surface of the The mass fraction of the aqueous solution of phosphate is 38%;
the phosphate comprises aluminum dihydrogen phosphate; the second curing agent is silicon phosphate.
According to the saidThe dielectric loss of the radome treated by the radome surface treatment method is less than or equal to 2.65X10 at the ambient temperature of 1000 DEG C -3 KV/mm; the heat conductivity coefficient is less than or equal to 0.6W/(m.K); the radome has thermal shock resistance, is rapidly cooled after being kept at the temperature of 1000 ℃ for 15 minutes, and has the cycle time of 5 times, and the phenomena of cracking, damage and the like are avoided.
Embodiment four:
the content of the embodiment and the three phases of the embodiment will be described in detail, and only the differences will be described, and the fourth embodiment is different in that:
the hydrophobic modifier is aminopropyl triethoxysilane; the first binder is PEO.
The radome treated by the radome surface treatment method has the dielectric loss less than or equal to 2.8x10 at the ambient temperature of 1000 DEG C -3 KV/mm; the heat conductivity coefficient is less than or equal to 0.75W/(m.K); the radome has thermal shock resistance, is rapidly cooled after being kept at the temperature of 1000 ℃ for 15 minutes, and has the circulation times of 4 times, and the phenomena of cracking or damage and the like are avoided.
Fifth embodiment:
the details of this embodiment, which are the same as those of the fourth embodiment, are described only for the differences, and the fourth embodiment is different in that:
the hydrophobic modifier is vinyl triethoxysilane; the first binder is PVA.
The radome treated by the radome surface treatment method has the dielectric loss less than or equal to 2.85 multiplied by 10 at the ambient temperature of 1000 DEG C -3 KV/mm; the heat conductivity coefficient is less than or equal to 0.72W/(m.K); the radome has thermal shock resistance, is rapidly cooled after being kept at the temperature of 1000 ℃ for 15 minutes, and has the circulation times of 4 times, and the phenomena of cracking or damage and the like are avoided.
Example six:
the content of this embodiment, which is the same as that of the fifth embodiment, will be described in detail, and only the differences will be described, with the fifth embodiment being that:
the hydrophobic modifier is dimethyl dichlorosilane; the first binder is in PEG.
Radome treated by the radome surface treatment methodThe dielectric loss of the radome is less than or equal to 2.7X10 at the ambient temperature of 1000 DEG C -3 KV/mm; the heat conductivity coefficient is less than or equal to 0.65W/(m.K); the radome has thermal shock resistance, is rapidly cooled after being kept at the temperature of 1000 ℃ for 15 minutes, and has the cycle time of 5 times, and the phenomena of cracking, damage and the like are avoided.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the features described above, have similar functionality as disclosed (but not limited to) in this application.
Claims (10)
1. The surface treatment method of the radome is characterized by comprising the following steps of:
the first step: preparing a contact layer repairing material: carrying out surface hydrophobic modification on quartz powder to obtain hydrophobic quartz powder, carrying out surface hydrophobic modification on quartz fibers to obtain hydrophobic quartz fibers, and mixing the hydrophobic quartz fibers, the hydrophobic quartz powder and a first binder to obtain the contact layer repairing material;
and a second step of: coating the contact layer repairing material on the surface damage part of the radome, and drying and curing at room temperature to form a contact layer;
and a third step of: preparing an intermediate layer repairing material: carrying out reinforcement modification on the quartz fiber to obtain reinforced quartz fiber, and sequentially dipping the surface of the reinforced quartz fiber into a reinforcement auxiliary agent solution and a second binder to obtain the intermediate layer repair material;
fourth step: coating the intermediate layer repairing material on the surface of the contact layer, and drying and curing at room temperature to form an intermediate layer;
fifth step: preparing a surface layer repairing material: mixing quartz powder with a third binder to obtain the surface layer repairing material;
sixth step: and coating the surface layer repairing material on the surface of the intermediate layer, and drying and curing at room temperature to form the surface layer.
2. The radome surface treatment method according to claim 1, wherein in the process of preparing the contact layer repairing material in the first step, the quartz fiber is subjected to surface hydrophobic modification, enhanced modification is performed before the quartz fiber is subjected to surface hydrophobic modification, the enhanced modification is performed after the surface is immersed in an enhanced auxiliary agent solution, and then the surface hydrophobic modification is performed, so that the hydrophobic quartz fiber is obtained.
3. The method of claim 2, wherein during the first step, during the preparation of the contact layer repair material,
in the preparation process of the contact layer repairing material, the mass ratio of quartz fiber to quartz powder to the first binder is (12-18): (2-8): 1.
4. the radome surface treatment method according to claim 1 or 2, wherein in the first step, the specific process of performing surface hydrophobic modification on the quartz powder is as follows:
mixing the quartz powder with a hydrophobic modifier in alcohol solution, and drying at room temperature after mixing to obtain hydrophobic quartz powder;
the specific process for carrying out surface hydrophobic modification on the quartz fiber comprises the following steps:
mixing the quartz fiber with a hydrophobic modifier in alcohol solution, and drying at room temperature after mixing to obtain the hydrophobic quartz fiber;
the hydrophobic modifier is one or more of aminopropyl triethoxysilane, vinyl triethoxysilane and dimethyl dichlorosilane.
5. The radome surface treatment method of claim 1, wherein the first binder is one or more of polyethylene oxide (PEO), polyvinyl alcohol (PVA), polyethylene glycol (PEG).
6. The radome surface treatment method according to claim 1 or 2, wherein in the first step, the specific process of reinforcing and modifying the quartz fiber is as follows: dipping the quartz fiber in silica sol, and drying and curing after the dipping is finished to obtain reinforced quartz fiber;
the mass ratio of the silica fiber to the silica sol attached to the surface of the silica fiber is 1: (0.11-0.15).
7. The radome surface treatment method of claim 6, wherein the reinforcing aid solution is an aqueous solution of boron nitride and/or boron oxide;
the mass ratio of the quartz fiber to the reinforcing auxiliary agent is 1: (0.22-0.26).
8. The radome surface treatment method of claim 6, wherein the second binder comprises an aqueous silicate solution, a first curing agent;
the silicate comprises potassium silicate and/or calcium silicate; the first curing agent comprises magnesium fluosilicate and/or magnesium oxide;
the mass ratio of the quartz fiber to the second binder in the intermediate layer repairing material is (1-3): 1.
9. the radome surface treatment method according to claim 1, wherein in the fifth step, the specific process of preparing the surface layer repair material is as follows: mixing quartz powder and glass powder, and then mixing with a third binder to obtain the surface layer repairing material;
the surface layer repairing material comprises the following components in percentage by mass: (0-3): 1.
10. the radome surface treatment method of claim 1, wherein the third binder comprises an aqueous solution of phosphate, a second curing agent;
the phosphate comprises aluminum phosphate and/or aluminum dihydrogen phosphate; the second curing agent is silicon phosphate and/or aluminum tripolyphosphate.
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