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A kind of wave-transparent component of multi-layer foam sandwich that can be applied to radome or satellite radome and its preparation method

A satellite antenna and radome technology, which is applied to antenna components, antennas, chemical instruments and methods, etc., can solve the problems of insufficient mechanical properties of products, failure to meet the requirements of dual-band use, and easy delamination of the enhancement layer.

Active Publication Date: 2018-12-18
CHANGSHA JINGYOU NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure has been widely used, but it also has serious shortcomings: for example, it cannot meet the requirements of dual-band and multi-band use; the reinforcement layer is easy to delaminate, and the mechanical properties of the product are insufficient, etc.

Method used

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  • A kind of wave-transparent component of multi-layer foam sandwich that can be applied to radome or satellite radome and its preparation method
  • A kind of wave-transparent component of multi-layer foam sandwich that can be applied to radome or satellite radome and its preparation method
  • A kind of wave-transparent component of multi-layer foam sandwich that can be applied to radome or satellite radome and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] a kind of like figure 1 Shown is a multi-layer foam sandwich wave-transmitting member (flat member) that can be applied to a radome or a satellite radome. The wave-transmitting member includes an outer protective layer 1, an outer reinforcing layer 2, and a periodic lamination The structure 3 and the internal reinforcement layer 5 located on the innermost side; the periodic laminated structure 3 is mainly composed of a plurality of unit structure layers 4, and each unit structure layer 4 is composed of an upper reinforcement layer 41, a foam sandwich layer 42, a lower The reinforced layer 43 is superimposed and combined; the outer reinforced layer 2, the inner reinforced layer 5, the upper reinforced layer 41 and the lower reinforced layer 43 are all made of fiber-reinforced epoxy resin-based composite materials, and the foam sandwich layer is made of polymethacrylimide ( PMI) foam. Such as figure 2 As shown, the unit structure layers 4 of the periodic laminated stru...

Embodiment 2

[0055] a kind of like figure 1 , Figure 4 The wave-transmitting member (circular analog member) with a multi-layer foam sandwich that can be applied to a radome or a satellite radome is shown. The wave-transmitting member includes an outer protective layer 1, an outer reinforcement layer 2, a periodic The laminated structure 3 and the internal reinforcement layer 5 located on the innermost side; the periodic laminated structure 3 is mainly composed of a plurality of unit structure layers 4, and each unit structure layer 4 is composed of an upper reinforcement layer 41, a foam sandwich layer 42 , lower reinforcement layer 43 are superimposed and combined; the outer reinforcement layer 2, the inner reinforcement layer 5, the upper reinforcement layer 41 and the lower reinforcement layer 43 are all made of fiber-reinforced epoxy resin-based composite materials, and the foam sandwich layer is made of polymethacryloimide Amine (PMI) foam. Such as image 3 As shown, the unit str...

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Abstract

The invention discloses a multi-layer foam sandwich wave-transparent member for a radar cover or a satellite radome. The wave-transparent member comprises an outer protective layer, an outer reinforcing layer, a periodic laminated structure and an inner reinforcing layer from outside to inside. The periodic laminated structure comprises a plurality of laminated unit structure layers. The unit structure layer comprises an upper reinforcing layer, a lower reinforcing layer and a foam sandwich layer and the layers are laminated. The inner and outer reinforcing layer and the upper and lower reinforcing layers are prepared from a fiber-reinforced epoxy resin-based composite material. The foam sandwich layer comprises polymethacrylimide foam. A preparation method of the wave-transparent member comprises preparing the unit structure layers, periodically stacking the prepared unit structure layers, sewing all the layers of the laminated structures through reinforced fibers to form an integral body, paving outer reinforcing fibers, pouring epoxy resin in vacuum, carrying out molding to obtain the outer reinforcing layer, paving inner reinforcing fibers, pouring epoxy resin in vacuum, carrying out molding to obtain the inner reinforcing layer, and spraying a functional coating to obtain the wave-transparent member. The wave-transparent member has excellent mechanical performances and can meet the use requirements of double wavebands and multi-waveband.

Description

technical field [0001] The invention relates to a wave-transmitting member and a preparation method thereof, in particular to a wave-transmitting member applicable to a radome or a satellite radome and a preparation method thereof. Background technique [0002] With the development of modern high technology, radars are widely used in aircraft, missiles, navigation and other fields, and the use of radomes is also becoming more and more extensive. The radome is the window of electromagnetic waves. Its function is to protect the antenna and prevent the environment from affecting and interfering with the working state of the radar antenna, so as to reduce the power to drive the antenna, improve its working reliability, and ensure the radar antenna to work around the clock. The existence of the radome prolongs the service life of the antenna, simplifies the structure of the antenna, and reduces the weight of the structure. The radome is an important part of the radar system, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B9/04B32B17/04B32B17/10B32B17/12B32B27/04B32B27/30B32B27/38B32B5/06B32B33/00B32B37/02H01Q1/42
CPCB32B5/06B32B5/245B32B5/26B32B33/00B32B37/02B32B2037/243B32B2255/02B32B2260/021B32B2260/046B32B2262/10B32B2262/101B32B2266/0242B32B2307/20B32B2307/712B32B2307/72H01Q1/424
Inventor 易伟
Owner CHANGSHA JINGYOU NEW MATERIAL TECH CO LTD