Wave-transmitting core clamping material of antenna cover and manufacturing method and application thereof

A sandwich material and wave-transmitting technology, applied in the field of materials, can solve problems such as high dielectric constant and dielectric loss, electromagnetic wave energy damage, and affecting material wave transparency, achieving low dielectric constant, reduced dielectric constant, The effect of good mechanical strength

Active Publication Date: 2014-03-26
上海吒吒新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the characteristics of ceramic materials such as high brittleness and difficulty in processing and forming have limited their application. Although glass fiber reinforced plastics are easier to form than ceramic materials, they are more dependent on the environment and have low temperature brittleness. Larger and easy to break. At the same time, the dielectric constant and dielectric loss of FRP materials are relatively high, which will cause certain damage to electromagnetic wave energy and affect the wave transparency of the material.

Method used

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  • Wave-transmitting core clamping material of antenna cover and manufacturing method and application thereof
  • Wave-transmitting core clamping material of antenna cover and manufacturing method and application thereof
  • Wave-transmitting core clamping material of antenna cover and manufacturing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A kind of wave-transparent sandwich material, its preparation method comprises the following steps:

[0068] 1. Preparation of Epidermal Layer

[0069] Through thermal compounding process, PET non-woven material and 3mm thick glass fiber reinforced polypropylene sheet (GMT, South Korea Hanwha Composite Materials Co., Ltd.) were composited at 190°C by rolling to obtain a composite sheet as a sandwich composite material The upper epidermis 1 and the lower epidermis 5.

[0070] 2. Preparation of foam core layer

[0071] Put the polyurethane foam material raw material into the foaming equipment, and at the same time add carbon dioxide gas through high pressure, and use microwave to disperse, so that the carbon dioxide gas can be evenly integrated into the raw material. With the reaction of the raw material, reduce the pressure to expand the carbon dioxide gas, and obtain a density of 0.5g. / cm 3 A polyurethane foam core layer with a pore diameter of 10-20 nm is used as t...

Embodiment 2

[0075] A kind of wave-transparent sandwich material, its preparation method comprises the following steps:

[0076] Weigh 68 parts by weight of thermoplastic resin and 4 parts of additives and mix them evenly, add them into the twin-screw extruder, extrude the film, and at the same time spread 35 parts of continuous fibers into continuous fiber tapes, and lead them to the extrusion process after preheating. At the die head of the machine, it is infiltrated with the molten resin extruded and coated, rolled, and cooled to obtain a continuous fiber-reinforced thermoplastic composite material as the upper skin layer and the lower skin layer of this embodiment;

[0077] Wherein the thermoplastic resin is polyurethane, the continuous fiber is glass fiber, and the additives are 2 parts of 2,6-tertiary butyl-4-methylphenol and 2 parts of bis(3,5-tertiary butyl-4-hydroxyl Phenyl) sulfide mixtures.

[0078] Put the upper and lower skin layers on both sides of the mold and fix them, res...

Embodiment 3

[0081] A kind of wave-transparent sandwich material, its preparation method comprises the following steps:

[0082] 1. Preparation of Epidermal Layer

[0083] Weigh 50 parts of thermoplastic resin, 45 parts of long fiber, and 6 parts of additives in parts by weight, mix them evenly, add them into a twin-screw extruder, extrude them into sheets, roll them, and cool them to obtain long fiber reinforced thermoplastic composites. The material is used as the upper skin layer and the lower skin layer; wherein the thermoplastic resin is nylon 66, the long fiber is glass fiber, and the auxiliary agent is 1.5 parts of antioxidant 2,6-tertiary butyl-4-methylphenol, 1.5 parts A mixture of ultraviolet absorber 2,4-dihydroxybenzophenone and 3 parts of coupling agent γ-aminopropyltriethoxysilane, the average length of long fibers is 0.6mm;

[0084] 2. Preparation of foam core layer

[0085] The foam core layer is made of polyurethane foam board from Jiangsu Luyuan New Material Co., Ltd., ...

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Abstract

The invention belongs to the technical field of materials, and relates to a wave-transmitting core clamping material and a manufacturing method and application thereof. The wave-transmitting core clamping material comprises an upper skin layer, a core layer and a lower skin layer, wherein the upper skin layer and the lower skin layer are bonded on the two sides of the core layer, respectively; the upper skin layer and the lower skin layer are made of a fiber-reinforced thermoplastic composite material or a laminated material of the fiber-reinforced thermoplastic composite material and a transition material. The prepared wave-transmitting core clamping material provided by the invention has the characteristics that the quality is light, the intensity is high, the wave-transmitting property is good, the adaptive temperature range is wide, and the core clamping material is manufactured to be in different shapes through different manners of hot pressing, vacuum forming and the like so as to meet the requirement on the shape of an antenna cover.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a wave-transparent sandwich material, a manufacturing method and an application thereof. Background technique [0002] With the development of communication technology, especially the development of new satellite antennas, it is necessary to provide antennas with wave-transparent materials that can protect the antennas from environmental influences and have good permeability of electromagnetic waves in various bands, so as to ensure that the antennas can Receive various possible electromagnetic waves without missing any possible information. [0003] To ensure the excellent performance of the antenna, the radome material used to protect the antenna must have a low dielectric constant and low dielectric loss. At present, the materials used as radome mainly include ceramics and glass fiber reinforced plastics. However, the characteristics of ceramic materials such as high brittle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B27/04B32B27/18B32B5/18B32B37/00H01Q1/42
Inventor 惠芬杨刚惠翀
Owner 上海吒吒新材料科技有限公司
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