Preparation method of graphene/CoFe2O4/polyaniline composite absorbing material
A composite wave absorbing material, cofe2o4 technology, applied in the direction of graphene, nano carbon, etc., can solve the problem of difficult to achieve satisfactory results, and achieve the effect of wide absorption frequency band
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0016] (1) Add 6.0 g of multi-walled carbon nanotubes with a diameter of 30 to 50 nm into 400 mL of concentrated sulfuric acid, let stand for 24 hours, then add 10.0 g of potassium permanganate, stir at room temperature for 1 hour, and after ultrasonicating at 55 °C for 30 minutes, adjust the temperature to 70 °C Continue to sonicate for 30min, cool to room temperature, pour into 1.5L ice water, add 200mL H 2 O 2 , stand for 24h, remove the supernatant, centrifuge the precipitate, and dry it in a vacuum at 50°C to obtain graphene oxide. Graphene oxide was added to a small amount of deionized water, sonicated for 30 minutes, 300 mL of ammonia water and 300 mL of hydrazine hydrate were added, and under the condition of condensation and reflux, the water bath was heated to 95 ° C and reacted for 1 h. ℃ vacuum drying, grinding to obtain the product graphene.
[0017] (2) Weigh 4.0g Co(NO 3 ) 2 ·6H 2 O, 11.30g Fe(NO 3 ) 3 ·9H 2 O was dissolved in deionized water, slowly pou...
Embodiment 2
[0020] Graphene, CoFe 2 O 4 The preparation method is respectively the same as step (1) and step (2) in Example 1, and 0.20g graphene, 0.30gCoFe are weighed 2 O 4 , measure 0.50mL aniline monomer, the preparation method is the same as the step (3) of embodiment 1, obtains Graphene / CoFe 2 O 4 / polyaniline composite absorbing material (X=0.20, Y=0.30, Z=0.50). The prepared composite material has a frequency bandwidth of 14.5GHz with a reflectivity loss value of less than -10dB within 2-18GHz, and the minimum reflectivity loss value can reach -41dB.
Embodiment 3
[0022] Graphene, CoFe 2 O 4 The preparation method of 0.30g Graphene, 0.20gCoFe and 2 O 4 , measure 0.50mL aniline monomer, the preparation method is the same as the step (3) of embodiment 1, obtains Graphene / CoFe2 O 4 / polyaniline composite absorbing material (X=0.30, Y=0.20, Z=0.50). The prepared composite material has a frequency bandwidth of 12.4GHz with reflectivity loss value lower than -10dB in 2-18GHz, and the minimum reflectivity loss value can reach -43dB.
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
optical bandwidth | aaaaa | aaaaa |
width | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com