A high-efficiency wave absorbing agent for 2-18ghz frequency band and its preparation method
A wave absorbing agent and high-efficiency technology, applied in the field of wave absorbing materials, can solve the problems of unfavorable wave absorbing performance, reducing the magnetic loss of the system, destroying the impedance matching situation, etc., so as to improve the wave absorbing performance, enhance the dielectric loss, and have a good application background. Effect
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Embodiment 1
[0020] 1) Weigh 0.01mol ferric chloride and place it in a beaker, add 80ml of ethylene glycol into the beaker and stir for 10min, fully dissolve to obtain solution A;
[0021] 2) Add 7.2g of sodium acetate to solution A, and stir for 0.5h to obtain solution B;
[0022] 3) Put solution B into a 100ml reaction kettle, place it in an oven, and keep it warm at 200°C for 20 hours to finally obtain a layered solution;
[0023] 4) Pour off the supernatant, collect the black powder at the bottom of the reactor, wash it three times with deionized water and absolute ethanol, and dry it in a vacuum oven at 60°C for 6 hours to obtain pure Fe 3 o 4 powder.
[0024] The wave-absorbing performance of the 2-18GHz frequency band radar absorber prepared in this example is tested by the Agilent vector network analyzer coaxial line test method. During the test, the wave-absorbing material powder of the present invention and solid paraffin were uniformly mixed at 80°C in a mass ratio of 7:3 and...
Embodiment 2
[0027] 1) Weigh ferric chloride and copper chloride at a molar ratio of 2.9:0.1 and place them in a beaker, add 80ml of ethylene glycol into the beaker and stir for 10 minutes to fully dissolve to obtain solution A;
[0028] 2) Add 7.2g of sodium acetate to solution A, and stir for 0.5h to obtain solution B;
[0029] 3) Put solution B into a 100ml reaction kettle, place it in an oven, and keep it warm at 200°C for 20 hours to finally obtain a layered solution;
[0030]4) Pour off the supernatant, collect the black powder at the bottom of the reactor, wash it three times with deionized water and absolute ethanol, and dry it in a vacuum oven at 60°C for 6 hours to obtain Fe 3 o 4 / Cu powder.
[0031] The wave-absorbing performance of the 2-18GHz frequency band radar absorber prepared in this example is tested by the Agilent vector network analyzer coaxial line test method. During the test, the wave-absorbing material powder of the present invention and solid paraffin were uni...
Embodiment 3
[0034] 1) Weigh ferric chloride and copper chloride at a molar ratio of 2.7:0.3 and place them in a beaker, add 80ml of ethylene glycol into the beaker and stir for 10 minutes to fully dissolve to obtain solution A;
[0035] 2) Add 7.2g of sodium acetate to solution A, and stir for 0.5h to obtain solution B;
[0036] 3) Put solution B into a 100ml reaction kettle, place it in an oven, and keep it warm at 180°C for 24 hours to finally obtain a layered solution;
[0037] 4) Pour off the supernatant, collect the black powder at the bottom of the reactor, wash it three times with deionized water and absolute ethanol, and dry it in a vacuum oven at 60°C for 6 hours to obtain Fe 3 o 4 / Cu powder.
[0038] The wave-absorbing performance of the 2-18GHz frequency band radar absorber prepared in this example is tested by the Agilent vector network analyzer coaxial line test method. During the test, the wave-absorbing material powder of the present invention and solid paraffin were un...
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