CN112406136A - Glass fiber reinforced plastic antenna housing and preparation method thereof - Google Patents
Glass fiber reinforced plastic antenna housing and preparation method thereof Download PDFInfo
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- CN112406136A CN112406136A CN202011247902.7A CN202011247902A CN112406136A CN 112406136 A CN112406136 A CN 112406136A CN 202011247902 A CN202011247902 A CN 202011247902A CN 112406136 A CN112406136 A CN 112406136A
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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
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L63/10—Epoxy resins modified by unsaturated compounds
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Details Of Aerials (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention relates to a glass fiber reinforced plastic antenna housing and a preparation method thereof, wherein the glass fiber reinforced plastic antenna housing is prepared from a strong core felt, fiber cloth and slurry by adopting a vacuum bag film process, and the slurry is prepared from the following raw materials in parts by weight: 60-80 parts of vinyl resin, 5-10 parts of aluminum hydroxide, 2-4 parts of fluorinated graphene, 1-3 parts of ultraviolet resistant agent, 2-5 parts of curing agent, 2-5 parts of release agent, 0.5-5 parts of antioxidant and 0.5-2 parts of coupling agent. The glass fiber reinforced plastic radome has excellent mechanical property, good specific stiffness, outstanding impact resistance and fatigue resistance; and excellent wave-transparent rate, the average wave-transparent rate of the product is more than 90%; the glass fiber reinforced plastic antenna housing is prepared by using the strong core felt, so that the laying time is reduced, the cost is reduced (under the same thickness), the laying thickness is rapidly increased, and the operation time is saved.
Description
Technical Field
The invention relates to the technical field of antenna covers, in particular to a glass fiber reinforced plastic antenna cover and a preparation method thereof.
Background
Glass Fiber Reinforced Plastic (FRP), i.e. fiber reinforced plastic, generally refers to a reinforced plastic which uses glass fiber to reinforce unsaturated polyester, epoxy resin and phenolic resin matrix, and uses glass fiber or its products as reinforcing material, and is called glass fiber reinforced plastic, commonly called glass fiber reinforced plastic. The glass fiber reinforced plastic radome has the advantages of corrosion resistance, ageing resistance, long service life, strong electrical insulation and wave permeability and the like, can well protect the antenna, enables the performance of the antenna to be exerted and utilized to the maximum degree, and is suitable for various complex environments. The glass fiber reinforced plastic radome is applied to radar housings in the fields of aerospace, navigation, military and the like, and plays a role in protecting radar facilities.
The prior process for producing the glass fiber reinforced plastic radome mainly comprises mould pressing and vacuum bag films, and the 2 processes have the advantages and the defects: 1. molded (SMC) products: the method has the advantages of suitability for mass production of products and high cost of the die (upper and lower steel dies) and is not suitable for small-batch multi-variety production. 2. The vacuum bag film adopts a glass fiber reinforced plastic lower die, and the upper die adopts a vacuum bag film, so that the vacuum bag film has the advantages of low cost and suitability for small-batch products; the defects that the chopped strand mats and the knitted composite mats are generally adopted in the prior art, the resin content is high, the weight of the product is easy to be overweight, and the technical requirement of lightweight design of equipment is difficult to meet on the premise of ensuring the strength.
Disclosure of Invention
The invention aims to provide a glass fiber reinforced plastic antenna housing and a preparation method thereof.
The invention is realized by the following steps:
a glass fiber reinforced plastic radome is characterized in that: the glass fiber reinforced plastic antenna housing is made of a strong core felt, fiber cloth and slurry by adopting a vacuum bag film process;
the slurry is prepared from the following raw materials in parts by weight: 60-80 parts of vinyl resin, 5-10 parts of aluminum hydroxide, 2-4 parts of fluorinated graphene, 1-3 parts of ultraviolet resistant agent, 2-5 parts of curing agent, 2-5 parts of release agent, 0.5-2 parts of antioxidant and 0.5-2 parts of coupling agent.
Preferably, the slurry is prepared from the following raw materials in parts by weight: 60 parts of vinyl resin, 5 parts of aluminum hydroxide, 2 parts of fluorinated graphene, 1 part of an ultraviolet resistant agent, 2 parts of a curing agent, 2 parts of a release agent, 0.5 part of an antioxidant and 0.5 part of a coupling agent.
Preferably, the slurry is prepared from the following raw materials in parts by weight: 70 parts of vinyl resin, 8 parts of aluminum hydroxide, 3 parts of fluorinated graphene, 2 parts of an ultraviolet resistant agent, 4 parts of a curing agent, 3 parts of a release agent, 1 part of an antioxidant and 1 part of a coupling agent.
Preferably, the slurry is prepared from the following raw materials in parts by weight: 80 parts of vinyl resin, 10 parts of aluminum hydroxide, 4 parts of fluorinated graphene, 3 parts of an ultraviolet resistant agent, 5 parts of a curing agent, 4 parts of a release agent, 2 parts of an antioxidant and 2 parts of a coupling agent.
Preferably, the release agent is zinc stearate.
Preferably, the strong core felt consists of fibers and particle balls, and is bonded into an integral felt by an adhesive, and the mass ratio of the fibers to the particle balls is 3-5: 1.
Preferably, the fiber is polyester fiber or glass fiber, the particle globule is hollow glass bead, and the particle diameter of the hollow glass bead is 130-150 μm.
Preferably, the strong core felt is an alkali-free regular hexagonal strong core felt, and the thickness of the alkali-free regular hexagonal strong core felt is 1-3 mm.
Preferably, the fiber cloth is alkali-free fiber cloth of 200g per square meter.
The preparation method of the glass fiber reinforced plastic antenna housing comprises the following steps:
s1: manufacturing a vacuum bag film process: arranging a first layer of fibers on a prepared glass fiber reinforced plastic radome mold, uniformly coating sizing agent on first fiber cloth, and arranging a first layer of strong core felt on the first layer of fiber cloth; then, placing a second layer of fiber cloth on the first layer of strong core felt in an aligned mode, uniformly coating sizing agent on the second fiber cloth, arranging a second layer of strong core felt on the second fiber cloth, and repeating the operation until the thicknesses of the strong core felt and the fiber cloth meet the preset thickness of the product;
s2, tightly sealing the vacuum bag film, carrying out vacuum pressurization, keeping the pressure at more than or equal to 0.9MPa for 5 minutes, and carrying out glue extraction under the condition of no pressure drop;
s3: after demolding, obtaining the glass fiber reinforced plastic radome with the same shape as the glass fiber reinforced plastic radome mold, wherein the defects on the front surface of the glass fiber reinforced plastic radome are repaired by adopting gel coats of the same type; and (4) hollowing and repairing the back surface of the glass fiber reinforced plastic radome layer in a layered mode to obtain the finished glass fiber reinforced plastic radome.
Compared with the prior art, the invention has the following beneficial effects:
1. the glass fiber reinforced plastic radome has excellent mechanical property, good specific stiffness, outstanding impact resistance and fatigue resistance; and excellent wave-transmitting rate, and the average wave-transmitting rate of the product is more than 90%.
2. The glass fiber reinforced plastic radome prepared by the preparation process has excellent weight reduction performance, and the resin consumption is about 600 g/square meter when the lamination thickness is increased by 1 mm; in order to make the product more rigid, the product weight of the strong core mat is about 30 percent lighter than that of pure glass fiber reinforced plastic for the same thickness without adding reinforcements such as heavier glass fiber fabrics or chopped strand mats; good operability and wettability, and is very suitable for hand pasting and vacuum flow guide molding processes.
3. The glass fiber reinforced plastic antenna housing is prepared by using the strong core felt, so that the laying time is reduced, the cost (with the same thickness) is reduced, the thickness of the laid layer is rapidly increased, and the operation time is saved; and the strong core felt consists of polyester fibers or glass fibers and small particles, so that the uneven printing through of the surface of a product can be effectively reduced.
Detailed Description
The present invention will be described below with reference to examples.
Example 1
The glass fiber reinforced plastic radome is prepared from a strong core felt, fiber cloth and slurry by adopting a vacuum bag membrane process, wherein the slurry is shown in table 1.
The preparation method of the glass fiber reinforced plastic radome comprises the following steps:
s1: manufacturing a vacuum bag film process: arranging a first layer of fibers on a prepared glass fiber reinforced plastic radome mold, uniformly coating sizing agent on first fiber cloth, and arranging a first layer of strong core felt on the first layer of fiber cloth; then, placing a second layer of fiber cloth on the first layer of strong core felt in an aligned mode, uniformly coating sizing agent on the second fiber cloth, arranging a second layer of strong core felt on the second fiber cloth, and repeating the operation until the thicknesses of the strong core felt and the fiber cloth meet the preset thickness of the product;
s2: tightly sealing the vacuum bag membrane, carrying out vacuum pressurization, keeping the pressure more than or equal to 0.9MPa for 5 minutes, and carrying out glue extraction under the condition of no pressure drop;
s3: after demolding, obtaining the glass fiber reinforced plastic radome with the same shape as the glass fiber reinforced plastic radome mold, wherein the defects on the front surface of the glass fiber reinforced plastic radome are repaired by adopting gel coats of the same type; and (4) hollowing and repairing the back surface of the glass fiber reinforced plastic radome layer in a layered mode to obtain the finished glass fiber reinforced plastic radome.
Example 2
The glass fiber reinforced plastic radome is prepared from a strong core felt, fiber cloth and slurry by adopting a vacuum bag membrane process, wherein the slurry is shown in table 1.
The preparation method of the glass fiber reinforced plastic radome comprises the following steps:
s1: manufacturing a vacuum bag film process: arranging a first layer of fibers on a prepared glass fiber reinforced plastic radome mold, uniformly coating sizing agent on first fiber cloth, and arranging a first layer of strong core felt on the first layer of fiber cloth; then, placing a second layer of fiber cloth on the first layer of strong core felt in an aligned mode, uniformly coating sizing agent on the second fiber cloth, arranging a second layer of strong core felt on the second fiber cloth, and repeating the operation until the thicknesses of the strong core felt and the fiber cloth meet the preset thickness of the product;
s2: tightly sealing the vacuum bag membrane, carrying out vacuum pressurization, keeping the pressure more than or equal to 0.9MPa for 5 minutes, and carrying out glue extraction under the condition of no pressure drop;
s3: after demolding, obtaining the glass fiber reinforced plastic radome with the same shape as the glass fiber reinforced plastic radome mold, wherein the defects on the front surface of the glass fiber reinforced plastic radome are repaired by adopting gel coats of the same type; and (4) hollowing and repairing the back surface of the glass fiber reinforced plastic radome layer in a layered mode to obtain the finished glass fiber reinforced plastic radome.
Example 3
The glass fiber reinforced plastic radome is prepared from a strong core felt, fiber cloth and slurry by adopting a vacuum bag membrane process, wherein the slurry is shown in table 1.
The preparation method of the glass fiber reinforced plastic radome comprises the following steps:
s1: manufacturing a vacuum bag film process: arranging a first layer of fibers on a prepared glass fiber reinforced plastic radome mold, uniformly coating sizing agent on first fiber cloth, and arranging a first layer of strong core felt on the first layer of fiber cloth; then, placing a second layer of fiber cloth on the first layer of strong core felt in an aligned mode, uniformly coating sizing agent on the second fiber cloth, arranging a second layer of strong core felt on the second fiber cloth, and repeating the operation until the thicknesses of the strong core felt and the fiber cloth meet the preset thickness of the product;
s2: tightly sealing the vacuum bag membrane, carrying out vacuum pressurization, keeping the pressure more than or equal to 0.9MPa for 5 minutes, and carrying out glue extraction under the condition of no pressure drop;
s3: after demolding, obtaining the glass fiber reinforced plastic radome with the same shape as the glass fiber reinforced plastic radome mold, wherein the defects on the front surface of the glass fiber reinforced plastic radome are repaired by adopting gel coats of the same type; and (4) hollowing and repairing the back surface of the glass fiber reinforced plastic radome layer in a layered mode to obtain the finished glass fiber reinforced plastic radome.
Example 4
The glass fiber reinforced plastic radome is prepared from a strong core felt, fiber cloth and slurry by adopting a vacuum bag membrane process, wherein the slurry is shown in table 1.
The preparation method of the glass fiber reinforced plastic radome comprises the following steps:
s1: manufacturing a vacuum bag film process: arranging a first layer of fibers on a prepared glass fiber reinforced plastic radome mold, uniformly coating sizing agent on first fiber cloth, and arranging a first layer of strong core felt on the first layer of fiber cloth; then, placing a second layer of fiber cloth on the first layer of strong core felt in an aligned mode, uniformly coating sizing agent on the second fiber cloth, arranging a second layer of strong core felt on the second fiber cloth, and repeating the operation until the thicknesses of the strong core felt and the fiber cloth meet the preset thickness of the product;
s2, tightly sealing the vacuum bag film, carrying out vacuum pressurization, keeping the pressure at more than or equal to 0.9MPa for 5 minutes, and carrying out glue extraction under the condition of no pressure drop;
s3: after demolding, obtaining the glass fiber reinforced plastic radome with the same shape as the glass fiber reinforced plastic radome mold, wherein the defects on the front surface of the glass fiber reinforced plastic radome are repaired by adopting gel coats of the same type; and (4) hollowing and repairing the back surface of the glass fiber reinforced plastic radome layer in a layered mode to obtain the finished glass fiber reinforced plastic radome.
TABLE 1
| Kind of material | Example 1 | Example 2 | Example 3 | Example 4 |
| Vinyl resin | 60 | 70 | 80 | 75 |
| Aluminum hydroxide | 5 | 8 | 10 | 8 |
| Fluorinated graphene | 2 | 3 | 4 | 3 |
| Anti-ultraviolet agent | 1 | 2 | 3 | 5 |
| Curing agent | 2 | 4 | 5 | 3 |
| Release agent | 2 | 3 | 4 | 5 |
| Antioxidant agent | 0.5 | 1 | 2 | 1.5 |
| Coupling agent | 0.5 | 1 | 2 | 1.5 |
Test effects
The test tests were carried out using the samples of examples 1 to 4, the glass fiber reinforced plastic radome manufactured by glass fiber reinforced plastic limited of Kaixin Hebei was used in comparative example 1, the glass fiber reinforced plastic radome manufactured by glass fiber reinforced plastic limited of Penda (Qing Yuan City) was used in comparative example 2, the glass fiber reinforced plastic radomes of examples 1 to 4 and comparative examples 1 to 2 all had the same shape and size, and the test results are shown in Table 2.
TABLE 2 results of the experiment
As can be seen from the above table, the glass fiber reinforced plastic radome obtained in examples 1 to 4 has the best mechanical properties in all aspects, and is obviously superior to comparative examples 1 and 2.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. The glass fiber reinforced plastic radome is characterized in that the glass fiber reinforced plastic radome is made of strong core felt, fiber cloth and slurry by adopting a vacuum bag film process;
the slurry is prepared from the following raw materials in parts by weight: 60-80 parts of vinyl resin, 5-10 parts of aluminum hydroxide, 2-4 parts of fluorinated graphene, 1-3 parts of ultraviolet resistant agent, 2-5 parts of curing agent, 2-5 parts of release agent, 0.5-2 parts of antioxidant and 0.5-2 parts of coupling agent.
2. The glass fiber reinforced plastic radome of claim 1, wherein the slurry is composed of the following raw materials in parts by weight: 60 parts of vinyl resin, 5 parts of aluminum hydroxide, 2 parts of fluorinated graphene, 1 part of an ultraviolet resistant agent, 2 parts of a curing agent, 2 parts of a release agent, 0.5 part of an antioxidant and 0.5 part of a coupling agent.
3. The glass fiber reinforced plastic radome of claim 1, wherein the slurry is composed of the following raw materials in parts by weight: 70 parts of vinyl resin, 8 parts of aluminum hydroxide, 3 parts of fluorinated graphene, 2 parts of an ultraviolet resistant agent, 4 parts of a curing agent, 3 parts of a release agent, 1 part of an antioxidant and 1 part of a coupling agent.
4. The glass fiber reinforced plastic radome of claim 1, wherein the slurry is composed of the following raw materials in parts by weight: 80 parts of vinyl resin, 10 parts of aluminum hydroxide, 4 parts of fluorinated graphene, 3 parts of an ultraviolet resistant agent, 5 parts of a curing agent, 4 parts of a release agent, 2 parts of an antioxidant and 2 parts of a coupling agent.
5. The method for manufacturing a glass fiber reinforced plastic radome of claims 1-4, wherein the mold release agent is zinc stearate.
6. The glass fiber reinforced plastic radome of claim 1, wherein the strong core felt is composed of fibers and particle pellets, and is bonded into an integral felt-like object by an adhesive, and the mass ratio of the fibers to the particle pellets is 3-5: 1.
7. The glass fiber reinforced plastic radome of claim 6, wherein the fiber is polyester fiber or glass fiber, the small particle balls are hollow glass beads, and the particle size of the hollow glass beads is 130-150 μm.
8. The glass fiber reinforced plastic radome of claim 1, wherein the strong core mat is an alkali-free regular hexagonal strong core mat, and the thickness of the alkali-free regular hexagonal strong core mat is 1-3 mm.
9. The fiberglass radome of claim 1, wherein the fiber cloth is 200 grams per square meter of alkali-free fiber cloth.
10. A method of manufacturing a glass fiber reinforced plastic radome as claimed in claim 1, comprising the steps of:
s1: manufacturing a vacuum bag film process: arranging a first layer of fibers on a prepared glass fiber reinforced plastic radome mold, uniformly coating sizing agent on first fiber cloth, and arranging a first layer of strong core felt on the first layer of fiber cloth; then, placing a second layer of fiber cloth on the first layer of strong core felt in an aligned mode, uniformly coating sizing agent on the second fiber cloth, arranging a second layer of strong core felt on the second fiber cloth, and repeating the operation until the thicknesses of the strong core felt and the fiber cloth meet the preset thickness of the product;
s2: tightly sealing the vacuum bag membrane, carrying out vacuum pressurization, keeping the pressure more than or equal to 0.9MPa for 5 minutes, and carrying out glue extraction under the condition of no pressure drop;
s3: after demolding, obtaining the glass fiber reinforced plastic radome with the same shape as the glass fiber reinforced plastic radome mold, wherein the defects on the front surface of the glass fiber reinforced plastic radome are repaired by adopting gel coats of the same type; and (4) hollowing and repairing the back surface of the glass fiber reinforced plastic radome layer in a layered mode to obtain the finished glass fiber reinforced plastic radome.
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| CN202011247902.7A CN112406136A (en) | 2020-11-10 | 2020-11-10 | Glass fiber reinforced plastic antenna housing and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943471A (en) * | 2021-11-04 | 2022-01-18 | 成都鲁晨新材料科技有限公司 | Low-density prepreg, preparation method and application |
| CN114211839A (en) * | 2021-12-21 | 2022-03-22 | 南京强晟玻纤复合材料有限公司 | Low-dielectric antenna housing material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113943471A (en) * | 2021-11-04 | 2022-01-18 | 成都鲁晨新材料科技有限公司 | Low-density prepreg, preparation method and application |
| CN114211839A (en) * | 2021-12-21 | 2022-03-22 | 南京强晟玻纤复合材料有限公司 | Low-dielectric antenna housing material |
| CN114211839B (en) * | 2021-12-21 | 2024-03-08 | 南京强晟玻纤复合材料有限公司 | Low-dielectric antenna housing material |
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Application publication date: 20210226 |