Ferroferric oxide/molybdenum disulfide/carbon fiber composite wave-absorbing material and two-step reaction preparation method thereof

A composite wave-absorbing material, ferroferric oxide technology, applied in carbon fiber, fiber treatment, textiles and papermaking, etc., to achieve the effects of high resistance loss, high dielectric loss, and high magnetic loss

Active Publication Date: 2018-03-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] So far, there is no literature report: 1. Orderly composite of carbon fiber and molybdenum disulfide nanomaterials; 2. Research on electrical and magnetic properties of composite materials

Method used

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  • Ferroferric oxide/molybdenum disulfide/carbon fiber composite wave-absorbing material and two-step reaction preparation method thereof
  • Ferroferric oxide/molybdenum disulfide/carbon fiber composite wave-absorbing material and two-step reaction preparation method thereof
  • Ferroferric oxide/molybdenum disulfide/carbon fiber composite wave-absorbing material and two-step reaction preparation method thereof

Examples

Experimental program
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Embodiment

[0024] 1. Pretreatment of carbon fiber

[0025] Add 10g of chopped carbon fiber to 100-300ml of sodium hydroxide (1M) and stir for 30-60min, then wash with deionized water until neutral, then wash with acetone for 3 times, and finally bake in an oven at 120°C for 3 hours, and finally in Burn in a muffle furnace at 200°C for 30 minutes to remove the grease on the surface;

[0026] 2. Preparation of molybdenum disulfide / carbon fiber composites

[0027] Weigh 0.4g of pretreated carbon fiber, add 150ml of deionized water, 1.800g of thiourea and 0.968g of sodium molybdate dihydrate into the above system, ultrasonically disperse for 1 hour, and transfer the obtained uniform mixed liquid to 150ml of water In a thermal reaction kettle, seal the kettle, react at 200°C for 48 hours, automatically cool down to room temperature, open the kettle, filter, wash with deionized water and absolute ethanol three times, and dry at 60°C for 8 hours to obtain black powder molybdenum disulfide / Th...

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Abstract

The invention relates to a ferroferric oxide / molybdenum disulfide / carbon fiber composite wave-absorbing material and a two-step reaction preparation method thereof. The preparation method comprises the following steps: firstly, carrying out surface treatment on chopped carbon fibers, mixing the chopped carbon fibers with sodium molybdate and thioacetamide, and carrying out hydrothermal reaction soas to grow a layer of self-assembled molybdenum disulfide nano-sheet on the surfaces of the carbon fibers; and secondly, carrying out hydrothermal reaction so as to modify the surface of a molybdenumdisulfide / carbon fiber composite wave-absorbing material with certain ferroferric oxide magnetic nano-particles, so that the impedance matching of the composite material is further improved, and themicrowave absorption performance of the material is further improved by virtue of high magnetic loss of the magnetic nano-particles. The composite wave-absorbing material is an ideal wave-absorbing material simultaneously having small density, high temperature resistance, high resistance loss (carbon fibers) and dielectric loss (3D nano-molybdenum disulfide) and magnetic loss (ferroferric oxide magnetic nano-particles) and excellent impedance matching performance and oxidation resistance and further has huge practical and application values in the production of composite wave-absorbing materials.

Description

technical field [0001] The invention belongs to the technical field of composite materials and fine chemicals, and relates to a composite wave-absorbing material of ferric oxide / molybdenum disulfide / carbon fiber and a preparation method through a two-step reaction. Background technique [0002] With the rapid development of electronic information technology and the popularization of various electronic products, electromagnetic wave radiation has become a new environmental pollution. Studies have shown that excessive electromagnetic radiation can cause lesions in the nervous system, immune system, reproductive system and blood circulation system, and may even induce serious diseases including various cancers. Similarly, electromagnetic interference caused by electromagnetic waves will also affect the normal operation of radio, television, communications, precision instruments, medical equipment, navigation equipment, etc., and may cause serious consequences. For example, air...

Claims

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Application Information

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IPC IPC(8): D06M11/53D06M11/49D06M101/40
Inventor 张卫东颜红侠黄英张雪尚蓓蓉朱文峰齐暑华
Owner NORTHWESTERN POLYTECHNICAL UNIV
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