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Structure-type wave-absorption composite material containing magnetic glass fiber and preparation method thereof

A technology of glass fiber and composite materials, applied in the field of structural wave-absorbing composite materials, can solve the problems of uneven dispersion of magnetic materials and poor mechanical properties, and achieve the effects of low price, good wave-absorbing performance, and high mechanical properties

Inactive Publication Date: 2007-03-07
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of non-uniform dispersion of magnetic materials and poor mechanical properties in the existing magnetic structure type wave-absorbing composite materials, so as to provide a material with uniform dispersion of magnetic materials and both wave-absorbing and high mechanical properties. Structural microwave-absorbing composites containing magnetic glass fibers

Method used

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  • Structure-type wave-absorption composite material containing magnetic glass fiber and preparation method thereof
  • Structure-type wave-absorption composite material containing magnetic glass fiber and preparation method thereof
  • Structure-type wave-absorption composite material containing magnetic glass fiber and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] 20 parts by weight of carbon fibers and 10 parts by weight of magnetic glass fibers are unidirectionally arranged in a glass fiber reinforced plastic mold; 2 o 4 Ferrite glass fibers;

[0032] Evenly disperse 5 parts by weight of nano-scale carbonyl iron powder in the glue solution of 65 parts by weight of bisphenol A epoxy resin prepolymer, add a conventional dose of curing agent - 4,4'-diaminodiphenylmethane , to obtain a mixed solution containing nano-magnetic powder;

[0033] Pour the above-mentioned mixed solution containing nano-magnetic powder into the mold, so that the arranged continuous carbon fibers and magnetic glass fibers are fully immersed in the epoxy matrix glue containing nano-magnetic powder;

[0034] Carry out vacuum degassing to the mould, and then press molding at 200° C., and the epoxy prepolymer is cured to obtain the structural wave-absorbing composite material I containing magnetic glass fibers of the present invention.

[0035] The mechanic...

Embodiment 2

[0037] 30 parts by weight of carbon fibers and 10 parts by weight of magnetic glass fibers are unidirectionally arranged in a glass fiber reinforced plastic molding die; 0.5 Zn 0.5 Fe 2 o 4 Ferrite glass fibers;

[0038] Evenly disperse 5 parts by weight of nano-scale carbonyl iron powder in the glue solution of 55 parts by weight of bisphenol F type epoxy resin prepolymer, add a conventional dose of curing agent - 4,4'-diaminodiphenylmethane , to obtain a mixed solution containing nano-magnetic powder;

[0039] Pour the above-mentioned mixed solution containing nano-magnetic powder into the mold, so that the arranged continuous carbon fibers and magnetic glass fibers are fully immersed in the epoxy matrix glue containing nano-magnetic powder;

[0040] Carry out vacuum degassing to the mould, and then press molding at 200° C., and the epoxy prepolymer is solidified to obtain the structural wave-absorbing composite material II containing magnetic glass fibers of the present...

Embodiment 3

[0043] 40 parts by weight of carbon fibers and 10 parts by weight of magnetic glass fibers are unidirectionally arranged in a glass fiber reinforced plastic mold; 2 o 4 Ferrite glass fibers;

[0044] Evenly disperse 5 parts by weight of nanoscale spinel ferrite powder in the glue solution of 45 parts by weight of glycidylamine epoxy resin prepolymer, add a conventional dose of curing agent - 4,4'-di Aminodiphenyl sulfone to obtain a mixed solution containing nano magnetic powder.

[0045] Pour the above-mentioned mixed solution containing nano-magnetic powder into the mold, so that the arranged continuous carbon fibers and magnetic glass fibers are fully immersed in the epoxy matrix glue containing nano-magnetic powder;

[0046] The mold is vacuum degassed, then molded at 220° C., and the epoxy prepolymer is cured to obtain the structural wave-absorbing composite material III containing magnetic glass fibers of the present invention.

[0047] The mechanical properties of th...

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Abstract

The invention discloses a structured-type wave-adsorbing composite material with magnetic glass fiber, which comprises the following parts: 45-65% epoxide resin base, 10-30% magnetic glass fiber, 20-40% carbon fiber and 5% nanometer magnetic powder. The preparing method comprises the following steps: arranging carbon fiber and magnetic glass fiber in the glass steel mould along the same direction; dispersing nanometer magnetic powder in the gel liquid of epoxy prepolymer evenly; adding solidifier; obtaining composite liquid with nanometer magnetic powder; pouring composite liquid with nanometer magnetic powder in the mould; immersing the arranged carbon fiber and magnetic glass fiber in the epoxy base gel liquid with nanometer magnetic powder; degassing the mould in the vacuum; moulding; solidifying epoxy prepolymer to obtain the product.

Description

technical field [0001] The invention relates to a structural wave-absorbing composite material, in particular to a structural wave-absorbing composite material containing magnetic glass fibers, and a preparation method thereof. Background technique [0002] Absorbing material is the most important aspect of stealth technology and the material basis for weapon stealth. According to their molding process and bearing capacity, absorbing materials can be divided into coating absorbing materials and structural absorbing materials. The coating-type absorbing material is easy to construct, low in cost, and suitable for complex shapes. The disadvantages are poor weather resistance, poor adhesion, and inability to withstand high temperatures. In addition to the functions of absorbing and carrying, the radar structure absorbing material also has the advantages of widening the wave frequency band and not increasing the weight. It has the tendency to replace the coated radar absorbing ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K7/14B29C70/04B29C70/36
Inventor 付绍云肖红梅刘献明杨果
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI