Wide-frequency high-sensitivity electromagnetic wave-absorbing material and preparation method thereof
A wave-absorbing material and electromagnetic wave technology, applied in the field of wave-absorbing materials, can solve problems such as high density, narrow absorption frequency band, and low sensitivity, and achieve good temperature stability, excellent magnetoelectric properties, and improved narrow absorption frequency band effects
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Embodiment 1
[0050] A broadband and high-sensitivity electromagnetic wave absorbing material, which is made of two layers of composite absorbing materials bonded and compounded. The first layer of composite material is made of low-temperature solid-phase sintered manganese-zinc ferrite powder material and polymer binder. , the second layer of composite absorbing material is made of nanocrystalline materials bonded by lamination of 3μm transparent glue:
[0051] Among them, the low-temperature solid-phase sintered manganese-zinc ferrite powder material is composed of the following raw materials in mass percentage:
[0052] Fe 2 o 3 : 68.5wt%; MnO: 20.2wt%; ZnO: 11.2wt%; carbon fiber powder: 0.4wt%; TiO 2 : 0.06wt%; CaCO 3 : 0.04wt%. Wherein, each raw material purity is as follows: Fe2 o 3 : 99.5%; MnO: 99.1%; ZnO: 99.5%; carbon fiber powder: 99.5%; TiO 2 : Analytical grade; CaCO 3 : Analytical pure.
[0053] Will Fe 2 o 3 , MnO, ZnO and carbon fiber powder were weighed and mixed, ...
Embodiment 2
[0058] A broadband and high-sensitivity electromagnetic wave absorbing material, which is made of two layers of composite absorbing materials bonded and compounded. The first layer of composite material is made of low-temperature solid-phase sintered manganese-zinc ferrite powder material and polymer binder. , the second layer of composite absorbing material is made of amorphous materials bonded by lamination of 3μm transparent glue:
[0059] Among them, the low-temperature solid-phase sintered manganese-zinc ferrite powder material is composed of the following raw materials in mass percentage:
[0060] Fe 2 o 3 : 69.2wt%; MnO: 18.6wt%; ZnO: 12.0wt%; carbon fiber powder: 0.5wt%; Bi 2 o 3 : 0.1wt%;. Wherein, each raw material purity is as follows: Fe 2 o 3 : 99.5%; MnO: 99.1%; ZnO: 99.5%; carbon fiber powder: 99.5%; 2 o 3 : Analytical pure.
[0061] Will Fe 2 o 3 , MnO, ZnO and carbon fiber powder were weighed and mixed, doped, and subjected to wet sanding for 120 mi...
Embodiment 3
[0066] A broadband and high-sensitivity electromagnetic wave absorbing material, which is made of two layers of composite absorbing materials bonded and compounded. The first layer of composite material is made of low-temperature solid-phase sintered manganese-zinc ferrite powder material and polymer binder. , the second layer of composite absorbing material is made of nanocrystalline material and amorphous material bonded by 3μm transparent glue lamination:
[0067] Among them, the low-temperature solid-phase sintered manganese-zinc ferrite powder material is composed of the following raw materials in mass percentage:
[0068] Fe 2 o 3 : 69.4wt%; MnO: 19.2wt%; ZnO: 11.4wt%; hydrophilic carbon black: 0.5wt%; CaCO 3 : 0.08wt%;. Wherein, each raw material purity is as follows: Fe 2 o 3 : 99.5%; MnO: 99.1%; ZnO: 99.5%; hydrophilic carbon black: 99.5%; CaCO 3 : Analytical pure.
[0069] Will Fe 2 o 3 , MnO, ZnO and carbon fiber powder were weighed and mixed, doped, and su...
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Abstract
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