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Composite material for airborne radome and preparation method thereof

A composite material and radome technology, applied in the field of aerospace materials, to reduce weight, strengthen the structure, and improve the overall bearing capacity

Active Publication Date: 2018-01-26
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing resin-based composite materials can achieve broadband and high wave transmittance in one wave band, there is no radome material that can maintain high wave transmittance in two wave bands.

Method used

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  • Composite material for airborne radome and preparation method thereof
  • Composite material for airborne radome and preparation method thereof
  • Composite material for airborne radome and preparation method thereof

Examples

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Embodiment 1

[0048] a kind of like figure 1 The composite materials for airborne radomes shown are mainly used to prepare radomes working in Ka and Ku bands. Its structure is: a surface coating A, an outer skin layer B, a sandwich layer C, and an inner skin layer D are sequentially arranged from outside to inside, wherein the sandwich layer C is arranged between the outer skin layer B and the inner skin layer D, and the surface coating Layer A is applied to the surface of outer skin layer B.

[0049] Wherein the surface coating comprises primer layer A3, anti-rain erosion paint layer A2 and antistatic paint layer A1, rain erosion resistant paint layer A2 is arranged in the middle of primer layer A3 and antistatic paint layer A1, and primer layer A3 is coated on The surface of the outer skin layer B. The thickness of the primer layer is 0.03mm; the thickness of the anti-rain erosion layer is 0.15mm; the thickness of the antistatic layer is 0.04mm.

[0050] The outer skin layer uses quart...

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Abstract

The invention discloses a composite material for airborne radomes, and a preparation method thereof. The composite material for airborne radomes comprises a surface coating layer, an outer skin layer, a sandwich layer and an inner skin layer, the sandwich layer is arranged between the outer skin layer and the inner skin layer, and the surface of the outer skin layer is coated with the surface coating layer; the thickness of the outer skin layer is 0.2-1mm; the sandwich layer is made of polymethacrylimide, and has a right trapezoid structure, the short edge thickness is 4-30mm, and the long edge thickness is 4.5-34mm; and the thickness of the inner coating layer is 0.2-1mm. The preparation method comprises the following steps: preparing an inner skin layer prepreg through manual pasting dipping, overlaying a sandwich layer material, solidifying, preparing an outer skin layer prepreg through manual pasting dipping, solidifying, spraying the surface coating layer, and solidifying. The composite material for airborne radomes has the advantages of excellent environment resistance, good whole bearing ability, and maintenance of a high wave penetration rate in double wavebands.

Description

technical field [0001] The invention relates to the technical field of aerospace materials, in particular to a resin-based composite material for an airborne radome and a preparation method thereof. Background technique [0002] The airborne radome is an important part of the aircraft. Its function is to protect the internal antenna from the harsh environment during the working process, and at the same time ensure the normal operation of the antenna, that is, it has a high transmittance within the operating frequency range of the antenna. [0003] The performance of the radome is closely related to the performance of the selected material, and the radome material should have the following characteristics: [0004] 1. The structure has good load-bearing performance and meets the strength and stiffness requirements under service load conditions; [0005] 2. The dielectric constant and dielectric loss are small, and the low dielectric constant will reduce the reflection, so th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/04B32B27/06B32B33/00H01Q1/42
CPCB32B27/065B32B33/00B32B2260/021B32B2260/046B32B2307/21B32B2307/3065B32B2307/71B32B2307/7145B32B2307/7265B32B2605/18H01Q1/422
Inventor 曾竟成尹昌平邢素丽肖加余鞠苏
Owner NAT UNIV OF DEFENSE TECH
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