Glass fiber reinforced plastic radome and preparation method thereof

A fiberglass radome and glass fiber technology, which is applied in the field of radome, can solve the problems of increasing the difficulty and cost of transportation and installation, greatly affecting the wave-transmitting performance of the antenna, and increasing the production cost of the antenna, so as to reduce the total weight and enhance the wave-transmitting performance , the effect of good product surface effect

Active Publication Date: 2015-12-09
珠海国能新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The wall thickness of the product is relatively thick, generally 2.5 to 3mm, and the specific gravity is large, generally 2.0. The outer cover product is relatively heavy, which increases the difficulty and cost of transportation and installation;
[0007] 2. FRP materials produced by traditional technology have high glass fiber content, and the dielectric constant of FRP radome products produced is relatively high, generally around 4.2
[0008] Due to the thick wall thickness and high dielectric constant, it has a great influence on the wave-transmitting performance of the antenna, which increases the production cost of the antenna

Method used

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  • Glass fiber reinforced plastic radome and preparation method thereof
  • Glass fiber reinforced plastic radome and preparation method thereof

Examples

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preparation example Construction

[0038] figure 1 It is a schematic flow sheet of the FRP radome production process in the embodiment of the present invention, as figure 1 Shown, the preparation method of FRP radome comprises the steps:

[0039] Step S1, release the glass fiber straight yarn, the glass fiber bulked yarn and the glass fiber felt through a yarn releasing device (not shown in the figure), and enter the thermosetting resin through the guide device 1 The resin tank 2. Preferably, when laying the yarns, a bundle of straight glass fiber yarns is separated from a bundle of bulky glass fiber yarns, so that straight glass fiber yarns and bulky glass fiber yarns are evenly mixed together. In the production process of the glass fiber reinforced plastic radome in the prior art, in order to increase the wettability of the yarn, the yarn passes through the resin tank, and the pressure roller in the resin tank forms artificial resistance when the glass fiber yarn passes through. However, the glass fiber ya...

Embodiment 1

[0045] Each raw material and weight percent thereof of the fiberglass radome in the present embodiment are as follows:

[0046] Glass fiber straight yarn 16%

[0047] Fiberglass bulked yarn 16%

[0048] Fiberglass Mat 15%

[0049] Epoxy bisphenol A modified vinyl resin 43%

[0050] Aluminum hydroxide 10%.

[0051] The preparation method adopts the conventional preparation method or the preparation method described in the above examples. After testing, the density of the FRP radome obtained in this example is 1.75g / cm 3 , The dielectric constant is 3.8.

Embodiment 2

[0053] Each raw material and weight percent thereof of the fiberglass radome in the present embodiment are as follows:

[0054] Glass fiber straight yarn 12%

[0055] Fiberglass bulked yarn 12%

[0056] Fiberglass Mat 18%

[0057] Epoxy bisphenol A modified vinyl resin 46%

[0058] Aluminum hydroxide 12%.

[0059] The preparation method adopts the conventional preparation method or the preparation method described in the above examples. After testing, the density of the FRP radome obtained in this example is 1.65g / cm 3 , The dielectric constant is 3.6.

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Abstract

The invention discloses a glass fiber reinforced plastic radome and a preparation method thereof. The glass fiber reinforced plastic radome is formed by glass fiber yarns, a glass fiber mat, thermosetting resin, and fillers by the adoption of pultrusion process, the glass fiber yarns are composite yarns of glass fiber straight yarns and glass fiber bulk yarns, and the mass percent of the glass fiber straight yarns to the glass fiber bulk yarns is 45-55%:45-55%. According to the glass fiber reinforced plastic radome, the glass fiber yarns are the composite yarns of the glass fiber straight yarns and the glass fiber bulk yarns, on one hand, by the adoption of the bulk yarns, the strength of the composite material is enhanced, the contents of the glass fiber yarns and the glass fiber mat can be reduced, the gross weight of the product is reduced, the strength cost of an outdoor fixing rack is reduced, the installation difficulty is reduced, the content of glass fiber is reduced, the dielectric constant is reduced, and the wave transmission performance of antennas can be improved; on the other hand, the resin filling content is increased via the bulkiness of the bulk yarns, and good product surface effect can be obtained.

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
Inventor 葛凯刘庆辉
Owner 珠海国能新材料股份有限公司
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