Ceramic microwave absorbing material and preparation method and application thereof
A technology of microwave-absorbing materials and ceramic raw materials, which is applied in the field of ceramic microwave-absorbing materials and their preparation, can solve problems such as reducing the heating effect of rubber absorbing and heating layers, adhesives falling off and losing viscosity, and coatings that are not resistant to high temperatures. Low processing cost, not easy to coke, surface hardness and scratch resistance
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Embodiment 1
[0025] The ceramic microwave absorbing material of the present invention includes ceramic raw material powder and microwave absorbing powder, and the weight percentage of each component is: ceramic raw material powder 40-80%, microwave absorbing powder 20-60%. In this embodiment, each component is: ceramic raw material powder 40%, microwave absorbing powder 60% ferrite powder.
[0026] The above-mentioned ceramic raw material powder is a powder material for producing ordinary daily-use ceramics.
[0027] The above microwave absorbing powder is obtained by compounding one or more of ferrite powder, zinc oxide powder and silicon carbide powder.
[0028] The above-mentioned ferrite powder is hexagonal magnetoplumbite ferrite powder, the mesh size is between 200-400 mesh, and the temperature resistance is above 1000°C.
[0029] The above-mentioned zinc oxide powder is hexagonal zinc oxide whisker, and the temperature resistance is above 1000°C.
[0030] The above-mentioned silic...
Embodiment 2
[0041] In this embodiment, the percentage by weight of the ceramic raw material powder and the microwave absorbing powder is: 80% of the ceramic raw material powder, and 20% of the microwave absorbing powder is zinc oxide powder.
[0042] The ceramic raw material powder in this embodiment is the same as that in Embodiment 1, and the zinc oxide powder is hexagonal zinc oxide whisker, and the temperature resistance is higher than 1000°C.
[0043] The slurry in this embodiment is the slurry of the ceramic microwave absorbing material obtained by uniformly mixing the composite microwave-absorbing powder, methyl cellulose and water in a ratio of 65:0.2:34.8 according to the weight percentage.
[0044] The preparation method and application of the ceramic microwave absorbing material of the present invention are the same as those in Example 1. Example 3:
Embodiment 3
[0045] In this embodiment, the components of the composite microwave-absorbing powder are: ceramic raw material powder 40%, microwave-absorbing powder 50% ferrite powder, and 10% zinc oxide powder.
[0046] The slurry in this embodiment is the slurry of the ceramic microwave absorbing material obtained by uniformly mixing the composite microwave-absorbing powder, methyl cellulose and water in a ratio of 50:0.3:49.7 according to the weight percentage.
[0047] The preparation method and application of the ceramic microwave absorbing material of the present invention are the same as those in Example 1.
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