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Nano wave-absorption fibre and method for making same

A nano wave-absorbing fiber and micro-nano fiber technology, applied in the field of wave absorption and radiation protection, can solve the problems of easy falling off, poor softness, deformability, and reduced wave absorption performance of products, and achieve wide wave absorption range, strong The effect of absorbing performance

Inactive Publication Date: 2008-03-05
上海兰度科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ferrite-coated products are generally soft, but they are easy to fall off after being subjected to external forces such as friction and washing, which reduces the wave-absorbing performance of the product
The material obtained by adding ferrite is basically a hard product for industrial use, with poor flexibility and deformability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of polyester nano wave-absorbing fiber is as follows:

[0036] (1) Dissolving the micro-nanofiber raw material polyester masterbatch in a mixed solvent of phenol and symmetrical tetrachloroethane with a mass percentage of 50:50 in a ratio of 3:97 to the solvent to prepare a spinning solution;

[0037] (2) Using nano wave-absorbing functional particle nickel-zinc ferrite with an average diameter of 3nm to follow the steps

[0038](1) The mass percentage of the spinning solution prepared is that the ratio of 0.1:99.9 is added in the spinning solution prepared by step (1) to prepare the spinning solution containing nano wave-absorbing functional particle nickel-zinc ferrite; Under the condition of 200W and dispersion frequency of 20kHz, ultrasonic dispersion equipment was used to ultrasonically disperse the above-mentioned spinning liquid containing nano wave-absorbing functional particle nickel-zinc ferrite for 120 minutes to obtain a spinning solutio...

Embodiment 2

[0041] A preparation method of polyacrylonitrile nano wave-absorbing fiber is as follows:

[0042] (1) dissolving polyacrylonitrile, the raw material of micro-nanofibers, in solvent N, N-dimethylformamide in a ratio of 15:85 by mass percentage with solvent N, N-dimethylformamide to prepare spinning solution;

[0043] (2) The mixture of magnesium manganese ferrite with an average diameter of 40nm and carbon nanotubes with an average diameter of 40nm is used as nano wave-absorbing functional particles, and the mass percentage is 65:35 The mixture of magnesium manganese ferrite and carbon nanotubes Add the spinning solution prepared by step (1) in the ratio of 0.5:99.5 to the spinning solution prepared by step (1) to prepare the spinning solution containing nano wave-absorbing functional particles; when the dispersion power is 800W , Under the condition of a dispersion frequency of 60kHz, use ultrasonic dispersion equipment to ultrasonically disperse the above-mentioned spinning ...

Embodiment 3

[0046] A preparation method of polyamide nano wave-absorbing fiber is as follows:

[0047] (1) Evenly mix the barium ferrite nano wave-absorbing functional particles with an average diameter of 95 nanometers and the micro-nano fiber raw material polyamide 66 slices in a ratio of 10:90 by mass percentage to obtain a mixture of the two, and heat the mixture at 160 ° C. Drying under the condition of 18h;

[0048] (2) Pour the mixture prepared in step (1) into the feed port of the melt electrospinning device, and melt the polyamide 66 slices by extruding the screw extruder and keep the melt temperature at 292°C. The body and the melted polyamide 66 are extruded from the spinneret. During the melting process, ultrasonic vibration equipment is used to apply ultrasonic vibration to the screw extruder with a dispersion power of 1200W and a dispersion frequency of 120kHz. Uniformly dispersed in polyamide 66 melt under vibration;

[0049] (3) The polyamide 66 melt containing fully dis...

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Abstract

The present invention belongs to the field of radiation resisting technology, and is especially one kind of nanometer wave absorbing fiber. The nanometer wave absorbing fiber consists of nanometer wave absorbing particle of 1-100 nm diameter of fine fiber of 30-2000 nm diameter in the weight ratio of 3-35 to 65-97. The nanometer wave absorbing fiber has wide wave absorbing range, powerful wave absorbing capacity, lasting wave absorbing effect and high flexibility. It has wave absorbing function, as well as antistatic, bacteriostasis, biochemical protection and other functions.

Description

technical field [0001] The invention belongs to the technical field of wave absorption and radiation protection, and relates to a nano wave absorbing fiber and a preparation method thereof. Background technique [0002] With the development of modern science and technology, the impact of electromagnetic radiation on the environment is increasing day by day. Finding a material that can resist and weaken electromagnetic radiation—absorbing materials has become a major topic in material science today. Human research on absorbing materials began during World War II. In order to achieve military leadership, Western countries invested heavily in research on absorbing materials. Nowadays, with the rapid development of the telecommunication industry, the application of wave-absorbing materials has been penetrated into many fields such as communication anti-jamming, environmental protection and human body protection. Electromagnetic radiation causes direct and indirect damage to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10D01F6/62D01F6/04D01F6/18D01F2/10D01F6/60D01F4/00D01D5/08
Inventor 郭敏
Owner 上海兰度科技有限公司
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