CN114163803A - Glass fiber reinforced plastic antenna housing and preparation process thereof - Google Patents

Glass fiber reinforced plastic antenna housing and preparation process thereof Download PDF

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Publication number
CN114163803A
CN114163803A CN202111306171.3A CN202111306171A CN114163803A CN 114163803 A CN114163803 A CN 114163803A CN 202111306171 A CN202111306171 A CN 202111306171A CN 114163803 A CN114163803 A CN 114163803A
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China
Prior art keywords
glass fiber
felt
reinforced plastic
filler
fiber reinforced
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CN202111306171.3A
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Chinese (zh)
Inventor
叶枫韬
杨华
王大勇
王渊坤
葛伟龙
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Taizhou Gaoyicheng Composite Materials Co ltd
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Taizhou Gaoyicheng Composite Materials Co ltd
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Priority to CN202111306171.3A priority Critical patent/CN114163803A/en
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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
    • C08K7/14—Glass
    • 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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/521—Pultrusion, i.e. forming and compressing by continuously pulling through a die and impregnating the reinforcement before the die
    • 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
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
    • B29C70/525—Component parts, details or accessories; Auxiliary operations
    • B29C70/528—Heating or cooling
    • 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
    • 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
    • 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
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • 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
    • 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
    • C08K7/16—Solid spheres
    • C08K7/18—Solid spheres inorganic
    • C08K7/20—Glass
    • 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
    • C08K7/22—Expanded, porous or hollow particles
    • C08K7/24—Expanded, porous or hollow particles inorganic
    • C08K7/26—Silicon- containing compounds
    • 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
    • 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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Details Of Aerials (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The invention discloses a glass fiber reinforced plastic radome and a preparation process thereof, which relates to the technical field of radomes and comprises 22-28% of thermosetting synthetic resin solution, 60-63% of glass fiber, 5-8% of glass fiber fabric felt, 5% of filler and 2% of auxiliary agent, wherein the thermosetting synthetic resin solution, the glass fiber, the filler and the auxiliary agent are stirred to prepare a mixture, then glass fiber yarn and the glass fiber fabric felt are put through a yarn putting device for yarn putting, then are soaked in the mixture, are led into a mold and are heated and formed, the formed radome is pulled out through a traction device, the invention has the advantages that the polyurethane resin is taken as a main body, the modification of three-dimensional glass fiber fabric and polyurethane resin is adopted, the polyurethane resin and different types of initiators are used together, the compounding and adding proportion in a curing system is optimized, and therefore, the interface bonding force of the resin and the glass fiber, the resin and the glass fiber felt, and the glass fiber felt is improved, so as to improve the wave-transmitting performance of the product, reduce the dielectric constant of the product and improve the toughness of the product.

Description

Glass fiber reinforced plastic antenna housing and preparation process thereof
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 process thereof.
Background
With social progress and rapid development of human civilization, the 5G antenna has low dielectric constant, light weight and thin wall for an external protective cover, so that the composite material antenna cover industry faces huge development and challenge.
Glass steel antenna house is because it is good to have the weatherability, it is insulating, intensity is high, advantages such as size stability and production efficiency height, a plurality of fields such as the protecting sheathing of wireless and mobile communication base station antenna have been used for at present extensively, glass steel antenna house generally uses unsaturated polyester to add filler and relevant auxiliary agent extrusion moulding again as the main raw materials, generally use glass fiber in the traditional glass steel pultrusion traditional technology, glass fiber fabric felt, unsaturated resin is main raw materials, become closely knit form, therefore the glass steel antenna house DK value of producing is higher reaches about 3.8, can reduce the wave-transparent performance of antenna house product, make radio signal attenuation great, be difficult to satisfy the requirement of current 5G antenna to the dustcoat.
Disclosure of Invention
The invention aims to provide a glass fiber reinforced plastic radome and a preparation process thereof, which comprises the steps of taking polyurethane resin as a main body, modifying three-dimensional glass fiber fabric and the polyurethane resin, the modified epoxy resin is used together with different types of initiators, the compounding and adding proportion in a curing system of the modified epoxy resin is optimized, the interface adhesive force of resin and glass fiber, the resin and glass fiber felt and the glass fiber and glass fiber felt is improved, so as to improve the wave-transmitting performance of the product, reduce the dielectric constant of the product and improve the toughness of the product, solves the problem that the traditional glass fiber reinforced plastic pultrusion process generally takes glass fiber, glass fiber fabric felt and unsaturated resin as main raw materials and is compact, therefore, the DK value of the produced glass fiber reinforced plastic radome is higher and reaches about 3.8, the wave transmission performance of the radome product can be reduced, the attenuation of radio signals is large, and the requirement of the existing 5G antenna on an outer cover is difficult to meet.
In order to achieve the purpose, the invention provides the following technical scheme: a glass fiber reinforced plastic radome comprises, by weight, 22% -28% of a thermosetting synthetic resin solution, 60% -63% of glass fibers, 5% -8% of a glass fiber fabric felt, 5% of a filler and 2% of an auxiliary agent.
Optionally, the thermosetting synthetic resin solution is polyurethane resin, and the glass fiber fabric felt is a glass fiber felt or a three-dimensional glass fiber fabric felt.
Optionally, the material comprises, by weight, 28% of the polyurethane resin, 60% of the glass fiber, 5% of the three-dimensional glass fiber fabric felt, 5% of the filler and 2% of the auxiliary agent.
Optionally, the filler is aluminum hydroxide, kaolin and white carbon black, and the particle size range of the filler is 10-250 micrometers.
The invention provides a preparation method which comprises the following steps: a preparation process of a glass fiber reinforced plastic radome comprises the following steps:
s1: stirring the thermosetting synthetic resin solution, the filler and the auxiliary agent at the rotating speed of 1000rpm for 1 hour to prepare a mixture, and putting the mixture into a resin tank;
s2: putting the glass fiber into a creel to prepare glass fiber yarn, putting the glass fiber yarn and the glass fiber fabric felt into a yarn putting device, and then putting the glass fiber yarn and the glass fiber fabric felt into a resin tank filled with the mixture for infiltration;
s3: guiding the soaked felt yarn compound into a mould, and heating to solidify and form the felt yarn compound;
s4: and pulling out the molded antenna housing from the mold outlet through a traction device.
Optionally, in step S1, the filler is modified before being stirred, where the modification is performed by acid-base etching or coupling agent treatment.
Optionally, the heating in step S3 is performed in a sectional manner, where the first zone is heated to 100 ℃, the second zone is heated to 145 ℃, and finally the temperature is reduced to 130 ℃.
Optionally, in the step S4, the traction speed is set to 200mm/min, the alternation trigger time is 4S, the interval time is 30S, the pause time is 10S, and the air pressure is 550 kpa.
Compared with the prior art, the invention has the following beneficial effects:
firstly, by adopting the three-dimensional glass fiber fabric felt, the three-dimensional glass fiber fabric is quickly soaked with resin and is easy to operate, the three-dimensional glass fiber fabric has the characteristics of labor saving, time saving and material saving, the comprehensive cost performance is higher, and the fabric finished product has the characteristics of lighter weight, stronger strength and higher performance, is impact-resistant, non-layered, excellent in heat preservation and insulation, and excellent in sound insulation effect, and simultaneously has the characteristics of vibration reduction and energy absorption.
The glass beads are added as the filler, are low in price, can be used for product toughness, do not reduce the rigidity and the melting point of the glass beads, can improve the flame retardant property and the Vicat softening point of a filled material, are good in electrical insulation property, can be used for filling of high-insulation polymers, can increase the flowability of the filled material, can improve the processability of plastics, can improve the surface leveling of engineering plastics, solves the problem of glass fiber reinforced surface, can effectively reduce the shrinkage rate of the filled material, and can improve the wave-transmitting performance of the radome through modification.
Third, the invention sets the thermosetting synthetic resin solution as polyurethane resin, the polyurethane resin has wide hardness range, high strength, good shock absorption, radiation resistance and air permeability resistance, and large adjustable range of performance, and multiple physical and mechanical performance indexes can be changed in a certain range by selecting raw materials and adjusting the formula, thereby meeting different requirements of users on the performance of products.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a graph of the dielectric constant of the product of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first embodiment, referring to fig. 1 and fig. 2, the present invention provides a technical solution: the glass fiber reinforced plastic radome comprises, by weight, 28% of polyurethane resin, 60% of glass fiber, 5% of three-dimensional glass fiber fabric felt, 5% of filler and 2% of auxiliary agent, and the dielectric constant of the product is shown in figure 2.
Referring to fig. 1 and 2, the present invention provides a preparation method, a preparation process of a glass fiber reinforced plastic radome, including the following steps:
s1: stirring the thermosetting synthetic resin solution, the glass fiber, the filler and the auxiliary agent for 1 hour at the rotating speed of 400rpm to prepare a mixture, and putting the mixture into a resin tank;
s2: spinning glass fiber by a creel to prepare glass fiber yarn, putting the glass fiber yarn and the glass fiber fabric felt by a yarn putting device, and then putting the glass fiber yarn and the glass fiber fabric felt into a resin tank filled with a mixture for infiltration;
s3: guiding the soaked felt yarn compound into a mould, and heating to solidify and form the felt yarn compound;
s4: and pulling out the molded antenna housing from the mold outlet through a traction device.
In a second embodiment, referring to fig. 1 and fig. 2, the present invention provides a technical solution: the glass fiber reinforced plastic radome comprises, by weight, 25% of polyurethane resin, 60% of glass fiber, 8% of glass fiber felt, 5% of filler, 2% of auxiliary agent and a product with a dielectric constant shown in figure 2.
Referring to fig. 1 and 2, the present invention provides a preparation method, a preparation process of a glass fiber reinforced plastic radome, including the following steps: the specific preparation steps are the same as in the first embodiment.
In a third embodiment, referring to fig. 1 and fig. 2, the present invention provides a technical solution: the glass fiber reinforced plastic radome comprises, by weight, 25% of polyurethane resin, 60% of glass fiber, 8% of glass fiber felt, 5% of filler, 2% of auxiliary agent and a product with a dielectric constant shown in figure 2.
Referring to fig. 1 and 2, the present invention provides a preparation method, a preparation process of a glass fiber reinforced plastic radome, including the following steps: the specific preparation steps are the same as in the first embodiment.
In a fourth embodiment, referring to fig. 1 and fig. 2, the present invention provides a technical solution: the glass fiber reinforced plastic radome comprises, by weight, 22% of polyurethane resin, 63% of glass fiber, 5% of glass fiber felt, 8% of filler, 2% of auxiliary agent and a product with a dielectric constant shown in figure 2.
Referring to fig. 1 and 2, the present invention provides a preparation method, a preparation process of a glass fiber reinforced plastic radome, including the following steps: the specific preparation steps are the same as in the first embodiment.
Furthermore, the thermosetting synthetic resin solution is polyurethane resin, the glass fiber fabric felt is glass fiber felt or three-dimensional glass fiber fabric felt, the thermosetting synthetic resin solution is polyurethane resin, the polyurethane resin has wide hardness range, high strength, good shock absorption, radiation resistance and air permeability resistance, and large adjustable range of performance, and various physical and mechanical performance indexes can be changed in a certain range through the selection of raw materials and the adjustment of a formula, so that different requirements of users on the performance of products are met, the three-dimensional glass fiber fabric is quickly soaked with resin by arranging the glass fiber fabric felt as the three-dimensional glass fiber fabric felt, the operation is easy, the fabric has the characteristics of labor saving, time saving and material saving, the comprehensive cost performance is higher, and the fabric finished product has the characteristics of lighter weight, stronger strength, higher impact resistance, no layering, heat insulation, excellent sound insulation effect and vibration reduction and energy absorption, because the three-dimensional structure avoids the resin curing to be concentrated, better surface effect and smaller shrinkage deformation can be obtained, the dielectric of the product can be reduced, and the requirement of the 5G antenna on the outer cover is met.
Further, the best formula of the composition effect is that the polyurethane resin is 28%, the glass fiber is 60%, the three-dimensional glass fiber fabric felt is 5%, the filler is 5% and the auxiliary agent is 2%, the three-dimensional glass fiber fabric and the polyurethane resin are modified and used together with different types of initiators, the compounding and adding proportion in a curing system is optimized, the interface binding power of the resin and the glass fiber and the interface binding power of the resin and the glass fiber felt are improved, the dielectric constant of the product is reduced, the toughness of the resin after curing is improved, the problems that the product is brittle, easy to crack, layered and the like caused by the reduction of the wall thickness of the product are solved, the dielectric constant of the product adopting the formula ratio is lowest, the dielectric constant is reduced from 3.8 to 3.0, and the application of the glass fiber reinforced plastic radome product in 5G communication is solved.
Furthermore, the filler is aluminum hydroxide, kaolin, white carbon black and a mixture thereof, the particle size range of the filler is 10-250 microns, the cost is low, the rigidity and the melting point of the filler are not reduced, the flame retardant property and the Vicat softening point of the filled material can be improved, the electric insulation property is good, the filler can be used for filling high-insulation polymers, the mobility of the filled material is increased, the processing property is improved, the surface leveling is improved, the problem of the glass fiber reinforced surface is solved, and the shrinkage rate of the filled material can be effectively reduced.
Further, in step S1 in the first embodiment, the filler of aluminum hydroxide, kaolin, white carbon black and their mixture is subjected to modification treatment before stirring, where the modification treatment is acid-base etching treatment or coupling agent treatment, and by modifying, the interfacial bonding force between the filler and the resin and the dispersibility of the filler can be improved, the bonding force between the resin and the filler is enhanced, and the wave-transparent performance of the radome is improved.
Furthermore, in the first embodiment, the heating in step S3 is sectional heating, which is to heat to 100 ℃, then to heat to 145 ℃, and finally to cool to 130 ℃, so that the product can be cured more uniformly by using sectional heating, thereby improving the quality of the finished product.
Further, in the first embodiment, in the step S4, the drawing speed is set to 200mm/min, the alternation trigger time is 4S, the interval time is 30S, the pause time is 10S, and the air pressure is 550kpa, so as to stably and rapidly form the product for subsequent processing.
As can be seen from fig. 2, the dielectric constant of the product in the first embodiment is the lowest, and the radome prepared in the first embodiment has good mechanical strength and electrical performance and low dielectric loss, the dielectric constant is reduced from 3.8 to 3.0, the wave-transmitting performance of the antenna is enhanced, and the normal application of the glass fiber reinforced plastic radome product in 5G communication is met.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. A glass fiber reinforced plastic radome is characterized in that: according to the weight portion of the raw materials, the glass fiber fabric comprises 22-28% of thermosetting synthetic resin solution, 60-63% of glass fiber, 5-8% of glass fiber fabric felt, 5% of filler and 2% of auxiliary agent.
2. The glass fiber reinforced plastic radome of claim 1, wherein: the thermosetting synthetic resin solution is polyurethane resin, and the glass fiber fabric felt is a glass fiber felt or a three-dimensional glass fiber fabric felt.
3. The glass fiber reinforced plastic radome of claim 2, wherein: the material comprises 28 weight parts of polyurethane resin, 60 weight parts of glass fiber, 5 weight parts of three-dimensional glass fiber fabric felt, 5 weight parts of filler and 2 weight parts of auxiliary agent.
4. The glass fiber reinforced plastic radome of claim 1, wherein: the filler is aluminum hydroxide, kaolin and white carbon black, and the particle size range of the filler is 10-250 micrometers.
5. The preparation process of the glass fiber reinforced plastic radome according to claim 1, which is characterized by comprising the following steps:
s1: stirring the thermosetting synthetic resin solution, the filler and the auxiliary agent at the rotating speed of 1000rpm for 1 hour to prepare a mixture, and putting the mixture into a resin tank;
s2: putting the glass fiber into a creel to prepare glass fiber yarn, putting the glass fiber yarn and the glass fiber fabric felt into a yarn putting device, and then putting the glass fiber yarn and the glass fiber fabric felt into a resin tank filled with the mixture for infiltration;
s3: guiding the soaked felt yarn compound into a mould, and heating to solidify and form the felt yarn compound;
s4: and pulling out the molded antenna housing from the mold outlet through a traction device.
6. The process for preparing a glass fiber reinforced plastic radome of claim 5, wherein: in the step S1, the filler is modified before being stirred, and the modification treatment is acid-base etching treatment or coupling agent treatment.
7. The process for preparing a glass fiber reinforced plastic radome of claim 5, wherein: the heating in the step S3 adopts sectional heating, wherein the first zone is heated to 100 ℃, the second zone is heated to 145 ℃, and finally the temperature is reduced to 130 ℃.
8. The process for preparing a glass fiber reinforced plastic radome of claim 5, wherein: in the step S4, the traction speed is set to be 200mm/min, the alternation trigger time is 4S, the interval time is 30S, the pause time is 10S, and the air pressure is 550 kpa.
CN202111306171.3A 2021-11-05 2021-11-05 Glass fiber reinforced plastic antenna housing and preparation process thereof Pending CN114163803A (en)

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CN202111306171.3A CN114163803A (en) 2021-11-05 2021-11-05 Glass fiber reinforced plastic antenna housing and preparation process thereof

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103286963A (en) * 2012-03-02 2013-09-11 深圳光启创新技术有限公司 Preparation method of glass-reinforced plastic, and glass-reinforced plastic antenna housing and preparation method thereof
CN108329681A (en) * 2018-03-02 2018-07-27 山西凝固力新型材料有限公司 A kind of polyurethane pultruded panels of two-way enhancing and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103286963A (en) * 2012-03-02 2013-09-11 深圳光启创新技术有限公司 Preparation method of glass-reinforced plastic, and glass-reinforced plastic antenna housing and preparation method thereof
CN108329681A (en) * 2018-03-02 2018-07-27 山西凝固力新型材料有限公司 A kind of polyurethane pultruded panels of two-way enhancing and preparation method thereof

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Application publication date: 20220311