CN114525034A - Composite material and low-temperature autoclave molding method for radome - Google Patents
Composite material and low-temperature autoclave molding method for radome Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/10—Silicon-containing compounds
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
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- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
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Abstract
The invention relates to the technical field of composite materials and molding thereof, in particular to a composite material and a low-temperature autoclave molding method of a radome; the composite material is prepared from the following raw materials in percentage by mass: 50-70 wt% of quartz fiber cloth and 30-50 wt% of modified organic silicon resin; the low-temperature autoclave molding method of the radome comprises the following steps: (1) preparing a prepreg; (2) sequentially laying the prepreg on a clean radome mold coated with a release agent; (3) filling the radome mold after layering into a vacuum bag and vacuumizing; (4) transferring the obtained vacuum tool into an autoclave, and carrying out sectional heating, pressurizing and low-temperature curing; (5) naturally cooling, demoulding and then carrying out high-temperature post-treatment. According to the invention, Si-O with higher bond energy in tetraethoxysilane is used for replacing Si-C bonds in organic silicon resin to improve the high-temperature resistance of the organic silicon resin and reduce the curing temperature of the organic silicon resin, and the prepared radome can still maintain higher mechanical property and excellent dielectric property under the high-temperature condition.
Description
Technical Field
The invention relates to the technical field of composite materials and forming thereof, in particular to a composite material and a low-temperature autoclave forming method of a radome.
Background
With the development of high-speed aircraft weaponry, severe high-temperature use environments put more and more stringent requirements on the high-temperature resistance of wave-transparent composite materials. In addition, the high-power radome is widely adopted by the novel radar and interference antenna for the aeronautical weaponry, which also puts higher requirements on the capability of the radome and the shell thereof to bear high-power-density irradiation. The key point is to resist high-power radar irradiation and reduce the dielectric constant and dielectric loss of the composite material, and the resin-based composite material with high temperature resistance and excellent wave-transmitting performance is required to be developed to meet the requirement of high-temperature resistance of the radome and the shell thereof. In order to meet the application requirements of the radome on high temperature resistance and high-power radiation resistance, the high temperature resistance and the dielectric property of the radome body material of the radar antenna provide a severe challenge.
The radar antenna cover body is made of fiber reinforced resin matrix composite materials, and the reinforcing phase of the radar antenna cover body is mainly made of traditional high-performance fibers such as glass fibers, aramid fibers, ultra-high molecular weight polyethylene fibers and the like. However, these conventional fibers have disadvantages of large surface inertness, easy hygroscopicity, high dielectric constant, poor dielectric properties, and the like, and are also expensive. The quartz fibers are made of very high purity SiO2The fiber prepared by melting has excellent dielectric property, dielectric constant and dielectric loss ratio glassGlass fibers are small and their elastic modulus increases with increasing temperature. Therefore, the high-performance radome manufactured by using the quartz fiber can meet the requirement of the radome on high-efficiency broadband wave transmission, and has the characteristics of excellent high-temperature mechanical property and the like.
Chinese patent' a high temperature resistant antenna housing and preparation method thereof, publication number: CN112366448A ", the application patent provides a method for preparing a high temperature resistant radome by using an RTM molding process to compound and mold a hollow sandwich structure and resin, the method can improve the high temperature resistance of the radome to a certain extent, but the molding process has excessively high curing temperature and excessively long curing time, which causes great loss to molding equipment; chinese patent' a ship-borne high temperature resistant heat insulation antenna housing and a preparation method thereof, the publication number is: the inner wall of the radome mentioned in CN 109818148A' comprises a structure inner layer, a composite core layer and a structure outer layer which are compounded together from inside to outside, and although the defect of poor heat insulation performance of the radome is overcome, the multilayer compounding process is complex and has high requirements on labor and equipment; "high performance composite material for space vehicle radar antenna cover and its preparation method, publication no: CN108329688A proposes that the high temperature resistance of the radome is effectively improved by preparing the radome from polyimide-doped quartz glass fibers, but the polyimide is expensive, the preparation steps are complex, the molding temperature is high, and the large-scale production is not facilitated.
The high temperature resistance and the dielectric property of the matrix resin of the fiber reinforced resin matrix composite material for the radome are the keys for determining whether the radome meets the development requirements of high speed of an aircraft and high power of a radar. Common high-temperature-resistant resin comprises polyimide, phenolic resin, high-temperature-resistant epoxy resin and the like, the polyimide resin has the defects of high cost, complicated preparation steps, high molding temperature and the like, and is difficult to widely popularize and apply in the field of antenna housing manufacturing, and the temperature resistance of the phenolic resin, the high-temperature-resistant epoxy resin and the like cannot meet the application requirements. The organic silicon resin is a novel high-temperature-resistant special high polymer material, has a semi-inorganic and semi-organic special molecular structure, can embody a series of properties of inorganic quartz in the application process, is used as an organic matter, and has the property of easy processing of the high polymer material, so that the organic silicon resin is a very special resin matrix and is called as a special high polymer material. The organic silicon resin has outstanding high and low temperature resistance, electric insulation, physiological inertia and low surface tension, simultaneously has excellent dielectric property, has stable dielectric property under various environmental conditions, and is an ideal base material for preparing the high temperature resistant radar antenna housing. However, the defects of high curing temperature, complex molding steps, high dependence degree of molding equipment, unstable temperature resistance and the like still exist in the application process of the organic silicon resin at present, and the popularization and application of the organic silicon resin in the field of the radar antenna housing are greatly limited.
Disclosure of Invention
The invention provides a composite material and a low-temperature autoclave molding method of a radome, aiming at overcoming the defects of insufficient high-temperature resistance and dielectric property, high molding temperature, complex preparation process and the like of the traditional radome and better exerting the performance advantages of a fiber reinforced resin matrix composite material. According to the performance requirements of the high-temperature-resistant wave-transmitting material for the radome on high-temperature resistance and high-power radiation resistance of the composite material, the high-temperature-resistant high-power radiation-resistant composite radome is prepared by taking high-wave-transmitting quartz fibers as a reinforcing material, taking high-temperature-resistant, electrically-insulating, low-curing-temperature and relatively low-cost modified organic silicon resin as a resin matrix of the composite material and adopting a low-temperature autoclave molding process with relatively low curing temperature. The Si-O-SiO bond content in the used modified organic silicon resin is high, the temperature resistance is outstanding, low-temperature forming is beneficial to energy conservation and consumption reduction, and the requirement on forming equipment is further reduced, so that the modified organic silicon resin has wider popularization and application values in the field of radomes.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the composite material is prepared from the following raw materials in percentage by mass: 50-70 wt% of quartz fiber cloth and 30-50 wt% of modified organic silicon resin.
Further, the modified organic silicon resin is tetraethoxysilane modified organic silicon resin, and tetraethoxysilane accounts for 5-20 wt% of the organic silicon resin.
Further, the method comprisesThe quartz fiber cloth is plain cloth, twill cloth or satin cloth, the diameter of a monofilament is 1-15 mu m, the thickness is 0.03-0.6 mm, the dielectric constant of 10GHz is less than 4.0, and the dielectric loss factor is less than 2.5 multiplied by 10-3。
A low-temperature autoclave molding method for a radome is prepared from the composite material, and comprises the following steps:
(1) preparing a modified organic silicon resin glue solution, coating the glue solution on the surface of quartz fiber cloth, and drying to obtain a prepreg;
(2) sequentially laying the prepreg in a clean radome mold coated with a release agent until the required number of layers is obtained;
(3) filling the radome mold after layering into a vacuum bag and vacuumizing;
(4) transferring the vacuum tool obtained in the step (3) into an autoclave, and carrying out sectional heating, pressurizing and low-temperature curing;
(5) and naturally cooling, demolding and post-treating to obtain the radome.
Preferably, in the step (1), the resin content in the modified organic silicon resin glue solution is 40-70 wt%, and the solvent is ethanol.
Preferably, in the step (2), vacuumizing and exhausting are performed once every 2 layers are paved, and 2-50 layers are paved.
Preferably, the vacuum degree of the pre-vacuum in the step (3) is kept at 500-900 Mba, and the time lasts for 10-40 min.
Further, the step (4) of heating, pressurizing and curing at low temperature in a segmented manner comprises a three-segment curing process: 1) pressurizing to 0.3-3MPa at room temperature, heating to 190 ℃ at the heating rate of 1-5 ℃/min, and curing for 3-10 min; 2) increasing the pressure to 0.8-5MPa, raising the temperature to 180-200 ℃ at the temperature rise rate of 1-5 ℃/min, and curing for 3-10 min; 3) increasing the pressure to 1.5-8MPa, raising the temperature to the curing temperature of 190 ℃ and 250 ℃ at the temperature rise rate of 1-5 ℃/min, and curing for 3-8 h.
Further, the post-treatment temperature in the step (5) is 250-300 ℃, and the time is 2-12 h.
Compared with the prior art, the invention has the following beneficial effects:
(1) the organic silicon resin is modified by the tetraethoxysilane, Si-O with higher bond energy in the tetraethoxysilane is used for replacing Si-C bonds in the organic silicon resin, the content of the Si-O-SiO bonds in the organic silicon resin is increased, the high temperature resistance of the organic silicon resin is improved, and the curing temperature of the organic silicon resin is reduced.
(2) The quartz fiber reinforced modified organic silicon resin high-temperature-resistant high-power-radiation-resistant composite material radar antenna housing can still maintain higher mechanical property without being damaged under the high-temperature condition, and has excellent dielectric property. In addition, the low-temperature autoclave molding process overcomes the defects that the traditional molding method has overhigh curing temperature and overlong curing time under the same temperature condition, is not beneficial to large-scale production and application and the like, and has more outstanding application advantages in the field of production and manufacturing of high-performance radar antenna covers.
Drawings
Fig. 1 is a tensile stress-strain curve of the high temperature resistant and high power resistant radiation composite material radome of the present invention at 25 ℃, 400 ℃ and 500 ℃.
Fig. 2 shows the change of the tensile strength and tensile modulus of the high-temperature resistant and high-power radiation resistant composite material radome at high temperature.
FIG. 3 is a composite material form diagram after the composite material of the invention has been stretched at 500 deg.C for 2 h.
Fig. 4 shows the change of the bending strength and the bending modulus of the high-temperature resistant and high-power radiation resistant composite material radome of the invention at high temperature.
Fig. 5 is a thermal weight loss diagram of the high temperature resistant and high power resistant radiation composite material radome of the invention.
Fig. 6 is a frequency-dielectric constant diagram of the high temperature resistant and high power resistant radiation composite material radar antenna housing of the present invention.
Fig. 7 is a physical diagram of the high temperature resistant and high power resistant radiation composite material radar antenna cover of the present invention.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
A low-temperature autoclave molding method for a high-temperature-resistant and high-power-radiation-resistant composite material radome comprises the following steps:
(1) preparing a modified organic silicon resin glue solution by using 60 wt% of organic silicon resin, 10 wt% of ethyl orthosilicate and 30 wt% of ethanol which account for the proportion of the modified organic silicon resin solution, coating the 40 wt% of modified organic silicon solution on the surface of 60 wt% of quartz fiber with plain weave, a monofilament with the diameter of 5 mu m and the thickness of 0.2mm, and drying a solvent to obtain a prepreg; (2) sequentially spreading the prepreg in a clean radome mold coated with a release agent, and spreading 4 layers; (3) putting the coated radome mold into a vacuum bag, keeping the vacuum degree of 800Mba for 20min, and vacuumizing; (4) transferring the vacuum tool obtained in the step (3) into an autoclave, and heating, pressurizing and curing at low temperature in three stages: 1) pressurizing to 0.5MPa at room temperature, heating to 180 ℃ at the heating rate of 1 ℃/min, and curing for 5 min; 2) increasing the pressure to 1MPa, heating to 190 ℃ at the heating rate of 1 ℃/min, and curing for 5 min; 3) the pressure is increased to 2MPa, the temperature is increased to 200 ℃ at the heating rate of 1 ℃/min, and the curing is carried out for 6 h. (5) And naturally cooling, demolding, and performing high-temperature post-treatment at 250 ℃ for 12 hours to obtain the high-temperature-resistant and high-power-resistant radiation composite material radome disclosed by the invention.
The performance test results of the high temperature resistant and high power radiation resistant composite material radar antenna cover prepared in example 1 are shown in fig. 1-6. The tensile strength at room temperature and 400 ℃ was about 200MPa, and the tensile strength after the 500 ℃ treatment rapidly decreased to 39MPa, but no fracture phenomenon was observed. FIG. 5 shows that the thermal decomposition temperature mainly occurs after 443 ℃, which indicates that the prepared composite material radome has high heat resistance; fig. 6 gives a dielectric constant of 3.22. Fig. 7 is a photograph of the prepared radome shell in a real object, and it can be seen that the radome prepared by the embodiment has a smooth surface, no defect and no gap. Table 1 summarizes the performance data for the composite radome prepared in example 1. The results show that the prepared composite material radome has excellent high temperature resistance and high-power radiation resistance (dielectric property).
Table 1 prepared composite material radar antenna housing performance table
Example 2:
a low-temperature autoclave molding method for a high-temperature-resistant and high-power-radiation-resistant composite material radome comprises the following steps:
(1) preparing a modified organic silicon resin glue solution by using 55 wt% of organic silicon resin, 8 wt% of ethyl orthosilicate and 37 wt% of the modified organic silicon resin solution, coating 43 wt% of the modified organic silicon solution on the surface of 57 wt% of quartz fiber with plain weave, a monofilament with the diameter of 5 mu m and the thickness of 0.1mm, and drying a solvent to obtain a prepreg; (2) sequentially spreading the prepreg in a clean radome mold coated with a release agent, and spreading 8 layers; (3) putting the coated radome mold into a vacuum bag, keeping the vacuum degree of 500Mba for 40min, and vacuumizing; (4) transferring the vacuum tool obtained in the step (3) into an autoclave, and heating, pressurizing and curing at low temperature in three stages: 1) pressurizing to 2MPa at room temperature, heating to 180 ℃ at the heating rate of 3 ℃/min, and curing for 6 min; 2) increasing the pressure to 3MPa, heating to 185 ℃ at the heating rate of 3 ℃/min, and curing for 6 min; 3) the pressure is increased to 7MPa, the temperature is increased to 210 ℃ at the heating rate of 3 ℃/min, and the curing is carried out for 5 h. (5) And naturally cooling, demolding, and performing high-temperature post-treatment at 265 ℃ for 11 hours to obtain the high-temperature-resistant and high-power-resistant radiation composite material radome disclosed by the invention.
Example 3:
a low-temperature autoclave molding method for a high-temperature-resistant and high-power-radiation-resistant composite material radome comprises the following steps:
(1) preparing a modified organic silicon resin glue solution by using 52 wt% of organic silicon resin, 8.5 wt% of ethyl orthosilicate and 39.5 wt% of the modified organic silicon resin solution, coating 50 wt% of the modified organic silicon solution on the surface of 50 wt% of a quartz fiber with twill, a monofilament diameter of 5.5 mu m and a thickness of 0.25mm, and drying a solvent to obtain a prepreg; (2) sequentially spreading the prepreg in a clean radome mold coated with a release agent, and spreading 3 layers; (3) putting the coated radome mold into a vacuum bag, keeping the vacuum degree of 900Mba for 10min, and vacuumizing; (4) transferring the vacuum tool obtained in the step (3) into an autoclave, and heating, pressurizing and curing at low temperature in three stages: 1) pressurizing to 2MPa at room temperature, heating to 175 ℃ at the heating rate of 2.5 ℃/min, and curing for 7 min; 2) increasing the pressure to 4MPa, heating to 185 ℃ at the heating rate of 2.5 ℃/min, and curing for 7 min; 3) the pressure is increased to 6MPa, and the temperature is increased to the curing temperature of 195 ℃ at the heating rate of 2.5 ℃/min, and the curing is carried out for 7 h. (5) And naturally cooling, demolding, and performing high-temperature post-treatment at 270 ℃ for 10 hours to obtain the high-temperature-resistant and high-power-resistant radiation composite material radome disclosed by the invention.
Example 4:
a low-temperature autoclave molding method for a high-temperature-resistant and high-power-radiation-resistant composite material radome comprises the following steps:
(1) preparing a modified organic silicon resin glue solution by using 50 wt% of organic silicon resin, 5 wt% of ethyl orthosilicate and 45 wt% of the modified organic silicon resin solution, coating the modified organic silicon resin glue solution with 48 wt% of the modified organic silicon solution to the surface of quartz fiber with 52 wt% of satin, 6 mu m of monofilament diameter and 0.15mm of thickness, and drying the solvent to obtain a prepreg; (2) sequentially spreading the prepreg in a clean radome mold coated with a release agent, and spreading 6 layers; (3) putting the coated radome mold into a vacuum bag, keeping the vacuum degree of 600Mba for 30min, and vacuumizing; (4) transferring the vacuum tool obtained in the step (3) into an autoclave, and heating, pressurizing and curing at low temperature in three stages: 1) pressurizing to 1.5MPa at room temperature, heating to 190 ℃ at the heating rate of 5 ℃/min, and curing for 4 min; 2) increasing the pressure to 2.5MPa, increasing the temperature to 200 ℃ at the temperature rise rate of 5 ℃/min, and curing for 4 min; 3) the pressure is increased to 3.5MPa, and the temperature is increased to the curing temperature of 250 ℃ at the temperature increasing rate of 5 ℃/min, and the curing is carried out for 3 hours. (5) And naturally cooling, demolding, and carrying out high-temperature post-treatment at 275 ℃ for 8 hours to obtain the high-temperature-resistant and high-power-resistant radiation composite material radome disclosed by the invention.
Example 5:
a low-temperature autoclave molding method of a high-temperature-resistant and high-power-radiation-resistant composite material radome, a high-temperature-resistant composite material radome and a low-temperature autoclave molding process thereof comprise the following steps:
(1) preparing a modified organic silicon resin glue solution by using 50 wt% of organic silicon resin, 3 wt% of ethyl orthosilicate and 47 wt% of the modified organic silicon resin solution, coating 45 wt% of the modified organic silicon solution on the surface of quartz fiber with 55 wt% of twill, 5 mu m of monofilament diameter and 0.1mm of thickness, and drying a solvent to obtain a prepreg; (2) sequentially spreading the prepreg in a clean radome mold coated with a release agent, and spreading 8 layers; (3) putting the coated radome mold into a vacuum bag, keeping the vacuum degree of 700Mba for 25min, and vacuumizing; (4) transferring the vacuum tool obtained in the step (3) into an autoclave, and heating, pressurizing and curing at low temperature in three stages: 1) pressurizing to 3MPa at room temperature, heating to 188 ℃ at the heating rate of 3.5 ℃/min, and curing for 10 min; 2) increasing the pressure to 5MPa, heating to 195 ℃ at the heating rate of 3.5 ℃/min, and curing for 10 min; 3) the pressure is increased to 8MPa, the temperature is increased to the curing temperature of 245 ℃ at the heating rate of 3.5 ℃/min, and the curing is carried out for 4 hours. (5) And naturally cooling, demolding, and performing high-temperature post-treatment at 300 ℃ for 5 hours to obtain the high-temperature-resistant and high-power-resistant radiation composite material radome disclosed by the invention.
Claims (9)
1. The composite material is characterized by being prepared from the following raw materials in percentage by mass: 50-70 wt% of quartz fiber cloth and 30-50 wt% of modified organic silicon resin.
2. The composite material of claim 1, wherein the modified silicone resin is an ethyl orthosilicate modified silicone resin, and the ethyl orthosilicate accounts for 5-20 wt% of the silicone resin.
3. The composite material of claim 1, wherein the quartz fiber cloth is plain cloth, twill cloth or satin cloth, the monofilament diameter is 1 to 15 μm, the thickness is 0.03 to 0.6mm, the dielectric constant of 10GHz is less than 4.0, the dielectric loss factor is less than 2.5 x 10-3。
4. A low-temperature autoclave molding method of a radome, which is prepared by the composite material of claim 1, and is characterized by comprising the following steps:
(1) preparing a modified organic silicon resin glue solution, coating the glue solution on the surface of quartz fiber cloth, and drying to obtain a prepreg;
(2) sequentially laying the prepreg in a clean radome mould coated with a release agent until the required number of laying layers is obtained;
(3) filling the radome mold after layering into a vacuum bag and vacuumizing;
(4) transferring the vacuum tool obtained in the step (3) into an autoclave, and carrying out sectional heating, pressurizing and low-temperature curing;
(5) and naturally cooling, demolding and post-treating to obtain the radome.
5. The low-temperature autoclave molding method for the radome of claim 4, wherein in the step (1), the resin content in the modified silicone resin glue solution is 40-70 wt%, and the solvent is ethanol.
6. The method for forming the low-temperature autoclave of the radome of claim 4, wherein in the step (2), the vacuum pumping and the exhaust are performed once for every 2 layers, and 2-50 layers are jointly laid.
7. The low-temperature autoclave molding method for the radome of claim 4, wherein the pre-vacuuming vacuum degree in the step (3) is maintained at 500-900 Mba for 10-40 min.
8. The method for forming a low-temperature autoclave of a radome of claim 4, wherein the step (4) of heating, pressurizing and curing at low temperature in a segmented manner comprises a three-segment curing process: 1) pressurizing to 0.3-3MPa at room temperature, heating to 190 ℃ at the heating rate of 1-5 ℃/min, and curing for 3-10 min; 2) increasing the pressure to 0.8-5MPa, raising the temperature to 180-200 ℃ at the temperature rise rate of 1-5 ℃/min, and curing for 3-10 min; 3) increasing the pressure to 1.5-8MPa, raising the temperature to the curing temperature of 190 ℃ and 250 ℃ at the temperature rise rate of 1-5 ℃/min, and curing for 3-8 h.
9. The low-temperature autoclave molding method for a radome of claim 4, wherein the post-treatment temperature in the step (5) is 250-300 ℃ and the time is 2-12 hours.
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| 蔡克龙: "耐高温杂化硅树脂的合成及复合材料性能研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
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