Preparation method of graphene composite wave absorbing material based on 5G communication and application of graphene composite wave absorbing material
A graphene composite and wave-absorbing material technology is applied in the field of wave-absorbing materials, which can solve the problems that wave-absorbing materials cannot be satisfied, carbonyl iron powder has high density, poor temperature stability, etc., and achieves good absorption performance, light surface density, and wave absorption. thin coating effect
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Embodiment 1
[0042] A preparation method of a graphene composite wave-absorbing material based on the full-band of future 5G mobile communication is as follows:
[0043] First, preheat the raw material of carbonyl iron powder, preheat the raw material under the protection of argon at 100°C for 2 hours; mix 4.9g of carbonyl iron powder raw material and bearing steel balls according to the mass ratio of material ball 1:10 Put it into a ball mill jar, wherein the bearing steel balls are composed of small balls with a diameter of 6mm and middle balls with a diameter of 8mm. The mass ratio of the small balls to the middle balls is 1:1. Add 0.1g graphene oxide, 0.01g Calcium stearate, and add 50mL of absolute ethanol to immerse the raw material, stir evenly with a glass rod, and then seal it into a pendulum ball mill for ball milling. The ball milling time is 1 hour. The ball milling changes the shape of the spherical carbonyl iron powder to have a certain Flaky particles with aspect ratio, and ...
Embodiment 2
[0046] A preparation method of a graphene composite wave-absorbing material based on the full-band of future 5G mobile communication is as follows:
[0047] First, preheat the raw material of carbonyl iron powder, preheat the raw material under the protection of argon at 100°C for 2 hours; mix 4.9g of carbonyl iron powder raw material and bearing steel balls according to the mass ratio of material ball 1:10 Put it into a ball mill jar, wherein the bearing steel balls are composed of small balls with a diameter of 6mm and middle balls with a diameter of 8mm. The mass ratio of the small balls to the middle balls is 1:1. Add 0.1g graphene oxide, 0.01g Calcium stearate, and add 50mL of absolute ethanol to immerse the raw material, stir evenly with a glass rod, and then seal it into a pendulum ball mill for ball milling. The ball milling time is 2 hours. The ball milling changes the shape of the spherical carbonyl iron powder to have a certain Flaky particles with aspect ratio, and b...
Embodiment 3
[0050] A preparation method of a graphene composite wave-absorbing material based on the full-band of future 5G mobile communication is as follows:
[0051] First, preheat the raw material of carbonyl iron powder, preheat the raw material under the protection of argon at 100°C for 2 hours; mix 4.9g of carbonyl iron powder raw material and bearing steel balls according to the mass ratio of material ball 1:10 Put it into a ball mill jar, wherein the bearing steel balls are composed of small balls with a diameter of 6mm and a middle ball with a diameter of 8mm. The mass ratio of the small balls to the middle balls is 1:1. Add 0.1g graphene oxide, 0.1g Calcium stearate, and add 50mL of absolute ethanol to immerse the raw material, stir evenly with a glass rod, and then seal it into a pendulum ball mill for ball milling. The ball milling time is 1 hour. The ball milling changes the shape of the spherical carbonyl iron powder to have a certain Flaky particles with aspect ratio, and ...
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