Glass fiber reinforced plastic antenna housing and preparation method of glass fiber reinforced plastic antenna housing

A glass fiber reinforced plastic radome and glass microbead technology, which is applied in the field of radomes, can solve the problems of not being able to meet the indicators required for high-frequency antenna calibration standing wave and isolation, difficult to meet thickness requirements, increasing resistance, etc., so as to improve the surface quality, meet wind load, increase the effect of lateral strength

Inactive Publication Date: 2017-05-31
江苏亚信电子科技有限公司
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AI Technical Summary

Problems solved by technology

[0005] Ordinary glass fiber reinforced plastic radome adopts medium-alkali glass fiber yarn content between 45-50%, o-phthalic unsaturated resin 35%, light activated calcium carbonate 12%, heavy calcium carbonate 3%, adopts ordinary production methods, and the density is 1.85- 1.9g / m³, the dielectric constant is between 4.2-4.5, which cannot meet the requirements for calibration of standing waves and isolation of high-frequency antennas
The low dielectric constant 3.0-3.8 radome can meet the required indicators of any antenna, but the preparation of the low dielectric constant 3.0-3.8 radome has the following deficiencies: 1. The wall thickness comparison of the low dielectric constant radome reflection working surface Thin, generally 1.75-2.0cm thick, but due to improper material selection in the current preparation process, it is difficult to meet this thickness requirement; 2. Chopped polyester surface felt is used for the outer felt of the radome, which increases the resistance to the cavity of the mold, and the output 10% decrease compared with ordinary radome, to be resolved in production

Method used

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  • Glass fiber reinforced plastic antenna housing and preparation method of glass fiber reinforced plastic antenna housing

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preparation example Construction

[0043] The preparation method of above-mentioned FRP radome, as figure 1 shown, including the following steps:

[0044] (1) Arrange the glass fiber yarns neatly and orderly on the creel, with 40 balls per layer, 50 layers in total;

[0045] (2) After each ball of glass fiber yarn is tapped from the inner core, pass through the holes arranged in an orderly manner on the creel to the back plate of the dipping tank in advance, and pass the arranged glass fiber yarn through the pulp filled The dipping tank of the material is inserted into the preforming mold to form first, and then the glass fiber yarn is pulled out to the cavity of the pultrusion mold, and the calibration mandrel is fixed;

[0046] (3) Dip the cut glass fiber mat into the slag soaked in the dipping tank, and then introduce the outer mat and the glass fiber mat soaked in slag into the preformed template for forming;

[0047] (4) Preheat the pultrusion mold, mold core and glass fiber yarn for 2.5-3 hours. After t...

Embodiment 1

[0052] The present embodiment FRP radome, this FRP radome is made of the alkali-free pultruded yarn of 4800Tex, the glass fiber mat N8643 of 300 g / square meter produced by Owens Corning in the United States, the chopped polyester surface mat and pulp. The material is made by pultrusion process;

[0053] Among them, the slurry is composed of the following raw materials by weight: 95-105 parts of pultruded isophthalic resin, 3 parts of glass beads, 3 parts of internal mold release agent, 12 parts of light active calcium acid, 6 parts of aluminum hydroxide, 3 parts of ultraviolet absorber, 0.6 part of curing agent AMB, 0.4 part of curing agent TBPB and 5 parts of polyethylene powder; pultruded isophthalic resin, the dielectric constant is lower than 3.5, the viscosity is 400mpa.s, and the acid value is 21.3 mgkoh / g, the solid content is 63.5%; the glass beads are selected as white powder with a specific gravity of 0.5g / cm and a mesh number of 1000 mesh; the internal release agent...

Embodiment 2

[0055] The present embodiment FRP radome, this FRP radome is made of the alkali-free pultruded yarn of 4800Tex, the glass fiber mat N8643 of 300 g / square meter produced by Owens Corning in the United States, the chopped polyester surface mat and pulp. The material is made by pultrusion process;

[0056] Among them, the slurry is composed of the following raw materials in parts by weight: 95-105 parts of pultruded isophthalic resin, 5 parts of glass microspheres, 1 part of internal mold release agent, 8 parts of light active calcium acid, 4 parts of aluminum hydroxide, 1 part of ultraviolet absorber, 0.4 part of curing agent AMB, 0.2 part of curing agent TBPB and 3 parts of polyethylene powder; pultruded isophthalic resin, the dielectric constant is lower than 3.5, the viscosity is 400mpa.s, and the acid value is 21.3 mgkoh / g, the solid content is 63.5%; the glass beads are selected as white powder with a specific gravity of 0.5g / cm and a mesh number of 1000 mesh; the internal ...

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Abstract

The invention relates to a glass fiber reinforced plastic antenna housing and a preparation method of the glass fiber reinforced plastic antenna housing. The glass fiber reinforced plastic antenna housing is prepared from glass fiber yarns, a glass fiber felt, an outer felt and paste through adopting a pulling-extruding process, wherein the paste is prepared from the following raw materials in parts by weight: 95 to 105 parts of pulled-extruded m-phenylene resin, 3 to 5 parts of glass mciro-bead, 1 to 3 parts of an internal releasing agent, 8 to 12 parts of lightweight active calcium carbonate, 4 to 6 parts of aluminum hydroxide, 1 to 3 parts of an ultraviolet absorbent, 0.4 to 0.6 part of a curing agent AMB, 0.2 to 0.4 part of a curing agent TBPB (Tetrabromophenol Blue) and 3 to 5 parts of polyethylene powder. The glass fiber reinforced plastic antenna housing has the advantages that the outer felt adopts a chopped polyester surface felt and is coordinated with other components, so that the potential of hydrogen and the weather resistance are improved; the service life can reach 200 years or more and is improved by one time or more when being compared with a common antenna housing; meanwhile, the yield of a product can also be improved; meanwhile, all the components have synergistic effect so that the performance of the glass fiber reinforced plastic antenna housing is greatly improved.

Description

technical field [0001] The invention relates to the technical field of radome, in particular to a fiberglass radome and a preparation method thereof. Background technique [0002] Fiberglass reinforced plastic (FRP), that is, fiber reinforced plastics, generally refers to glass fiber reinforced unsaturated polyester, epoxy resin and phenolic resin matrix, glass fiber or its products as reinforced plastics, called glass fiber reinforced plastics, commonly known as fiberglass. [0003] The fiberglass radome has the advantages of anti-corrosion, anti-aging, long life, strong electrical insulation and wave permeability, etc. It can play a very good role in protecting the antenna and maximize its performance. The fiberglass radome is suitable for Various complex environments are widely used in aerospace, communications, meteorology and other fields. [0004] The pultrusion FRP antenna cover is a continuous roving, felt, tape or cloth soaked in glue, which is continuously produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/42
CPCH01Q1/42
Inventor 聂敖和
Owner 江苏亚信电子科技有限公司
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