Wave-transmitting material with broadband resin matrix interlayer structure and preparation method of wave-transmitting material

A wave-transparent material and interlayer structure technology, applied in the field of composite materials, can solve the problems of high robustness requirements for single-layer thickness, difficulty in realizing broadband wave-transmitting performance, and low dielectric constant of outer layer materials, etc., to achieve excellent transparency Wave function, excellent broadband wave transmission characteristics, and the effect of excellent mechanical properties
CN102303441AActive Publication Date: 2012-01-04NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2012-01-04

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Abstract

The invention discloses a wave-transmitting material with a broadband resin matrix interlayer structure and a preparation method of the wave-transmitting material. The wave-transmitting material comprises an outer skin layer, a first foam sandwich layer, a middle skin layer, a second foam sandwich layer and an inner skin layer which are sequentially overlapped and tightly combined, wherein the outer skin layer, the middle skin layer and the inner skin layer are made of continuous quartz fibre reinforced resin-base composite materials; the first foam sandwich layer and the second foam sandwich layer are made of polyurethane foams, the outer skin layer, the middle skin layer and the inner skin layer have dielectric constants of 3.1-3.2 and loss angle tangent values of 0.009-0.01; and the first foam sandwich layer and the second foam sandwich layer have dielectric constants of 1.10-1.15 and loss angle tangent values of 0.005-0.006. The preparation method comprises the steps of: preparing reinforced materials, and laying the reinforced materials according to the layering order and the thickness of each layer, pre-forming and curing to obtain the wave-transmitting material. The wave-transmitting material has the advantages of simple structure and high cost performance.
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Description

technical field

[0001] The invention relates to the field of composite materials, in particular to a broadband wave-transmitting material and a preparation method thereof. Background technique

[0002] Wave-transparent materials refer to a class of materials with high transmittance to electromagnetic waves in a certain frequency band, which are widely used in the preparation of various radomes. Changes in temperature and frequency produce noticeable changes.

[0003] For broadband wave-transparent materials, multi-layer structures are often used to meet the bandwidth requirements. Currently commonly used multilayer structure wave-transparent materials include A, B, and C-type interlayers. A-type interlayer is a three-layer symmetrical structure, which consists of two layers of relatively dense high-dielectric constant thin surface layer (fiber-reinforced resin-based composite material) and a low-dielectric constant, low-loss and low-density porous core layer. (such as por...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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