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A kind of in-plane quasi-isotropic structure-stealth composite material and its preparation method

A quasi-isotropic, composite material technology, applied in the field of composite materials, can solve problems such as poor impact resistance, anisotropy of electromagnetic properties, easy delamination, etc., to reduce reflection, solve easy delamination, and achieve isotropy Effect

Active Publication Date: 2020-05-26
浙江世涛鼎革新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an in-plane quasi-isotropic structure-stealth composite material, which solves the problems of the anisotropy of electromagnetic properties and poor impact resistance of stealth composite materials in the prior art, and the problems of easy delamination after being impacted

Method used

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  • A kind of in-plane quasi-isotropic structure-stealth composite material and its preparation method
  • A kind of in-plane quasi-isotropic structure-stealth composite material and its preparation method
  • A kind of in-plane quasi-isotropic structure-stealth composite material and its preparation method

Examples

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preparation example Construction

[0051] A method for preparing an in-plane quasi-isotropic structure-stealth composite material of the present invention specifically comprises the following steps:

[0052] Step 1: Weaving of reinforcement

[0053] Hang the cut wave-absorbing fiber and wave-transmitting fiber on the hook of the yarn carrier of the determinant three-dimensional three-dimensional knitting machine according to the size, shape and arrangement of the fiber layers of the fabric, and then complete each step in the order of the weaving steps until a whole After the cycle is over, the weaving steps are repeated continuously until the required specifications of the reinforcement are reached;

[0054] Step 2: Model the Augment

[0055] Put the reinforcement braided in step 1 into an oven and dry at 100°C to 110°C for 2h to 4h, take it out after drying, and cut the dried reinforcement to Appropriate size, clean the mold and apply a release agent on the surface of the mold, after drying, put the cut rein...

Embodiment 1

[0074] A method for preparing an in-plane quasi-isotropic structure-stealth composite material, specifically comprising the following steps:

[0075] Step 1: Weaving of reinforcement

[0076] In this example, the wave-absorbing fiber is selected from Japan’s Toray T800-12k carbon fiber with excellent electromagnetic wave absorption performance and mechanical properties, and the wave-transmitting fiber is selected from the S fiber that is commonly used in China and has better strength, modulus, dielectric constant and high temperature resistance than E glass fiber. glass fiber. Among them, the glass fibers in the directions of 0°, 90°, and 45° in the wave-transmitting layer are 800tex, and the normal direction fibers are 400tex glass fibers. The size of the reinforcement is 250mm*185mm, the fibers in the 90° direction are 6 fibers / cm, the fibers in the 0° direction are 2 fibers / cm, and the arrangement order and ratio of the fibers are {G 1 -45° G 2 0° G 3 45° G 4 90° C...

Embodiment 2

[0094] A method for preparing an in-plane quasi-isotropic structure-stealth composite material, specifically comprising the following steps:

[0095] Step 1: Weaving of reinforcement

[0096] In this example, the wave-absorbing fiber is selected from Japan’s Toray T800-12k carbon fiber with excellent electromagnetic wave absorption performance and mechanical properties, and the wave-transmitting fiber is selected from the S fiber that is commonly used in China and has better strength, modulus, dielectric constant and high temperature resistance than E glass fiber. glass fiber. Among them, the glass fibers in the directions of 0°, 90°, and 45° in the wave-transmitting layer are 800tex, and the normal direction fibers are 400tex glass fibers. The size of the reinforcement is 250mm*185mm, the fibers in the 90° direction are 6 fibers / cm, the fibers in the 0° direction are 2 fibers / cm, and the arrangement order and ratio of the fibers are {G 1 -45° G 2 0° G 3 45° G 4 90° C...

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Abstract

The invention discloses an in-plane quasi-isotropic structure-stealthy composite material and further comprises a preparation method of the in-plane quasi-isotropic structure-stealthy composite material. The in-plane quasi-isotropic structure-stealthy composite material comprises a base body and a reinforcement body which are composited and solidified through a VARTM process. The base body is madeof resin; the reinforcement body is made of sandwich-type three-dimensional stereo woven material, the woven material is composed of a plurality of mutually-parallel fiber layers and normal fibers perpendicular to the fiber layers, and the fiber layers are bound together by the normal fibers through a weaving method. The preparation method specifically comprises the following steps of 1, weavingof the reinforcement body; 2, reinforcement body moulding; 3, glue injecting and solidifying; and 4, demoulding. The problems that as for a stealthy composite material in the prior art, the electromagnetic property is isotropic, the anti-impact property is poor, and the stealthy composite material is likely to be layered after being impacted are solved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to an in-plane quasi-isotropic structure-stealth composite material, and also relates to a preparation method of the above-mentioned stealth composite material. Background technique [0002] With the rapid development of military technology in various countries in the world, various high-resolution, high-reliability advanced detection technologies and precision-guided weapons have come out one after another, posing a serious threat to the viability of various types of aircraft, missiles and other weapons that dominate modern warfare. Stealth technology, as an effective means to improve the survival and penetration of weapon systems, especially the ability to strike in depth, has become a hot spot for military powers to compete for high-tech armaments. The precise meaning of stealth technology is low detectable technology. That is, through various technical means, reduce t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/24B29C70/36B29C70/54
CPCB29C70/24B29C70/36B29C70/543
Inventor 樊威党文生袁林佳李娟子薛利利董经经孟雪杨雪田慧霞
Owner 浙江世涛鼎革新材料有限责任公司
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