A cement-based electromagnetic wave impedance matching material and its preparation method
A technology of impedance matching and electromagnetic waves, which is applied in the cross field of electromagnetics and material science, can solve the problems of poor absorbing performance and poor impedance matching performance, and achieve the effect of excellent absorbing performance, low cost and simple preparation method
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Embodiment 1
[0035] A cement-based electromagnetic wave impedance matching material: the weight ratio of ordinary Portland cement, expanded perlite, ceramic waste, polycarboxylate superplasticizer and water is 500:500:200:5:325, wherein expanded perlite particles The diameter is 2mm, the water content is 2.5%; ceramic waste SiO 2 The content is 65%.
[0036] The preparation method of above-mentioned material comprises the steps:
[0037] 1) The ceramic waste is crushed with a jaw crusher, and particles with a nominal diameter of 2mm are selected as fine aggregates for subsequent use through sieve analysis;
[0038] 2) Weigh the raw materials according to the ratio of each raw material, and set aside;
[0039] 3) Mix and stir the required amount of cement and expanded perlite evenly to obtain a mixed dry material;
[0040] 4) Add the required amount of water reducing agent into the water, and stir evenly to obtain a mixture;
[0041] 5) Add the mixed solution prepared above into the mix...
Embodiment 2
[0047] A cement-based electromagnetic wave impedance matching material: the weight ratio of ordinary Portland cement, expanded perlite, ceramic waste, polycarboxylate superplasticizer and water is 500:400:100:1:290, wherein expanded perlite particles The diameter is 3mm, the water content is 2.8%; ceramic waste SiO 2 The content is 72%.
[0048] The preparation method of above-mentioned material comprises the steps:
[0049] 1) The ceramic waste is crushed with a jaw crusher, and particles with a nominal diameter of 3.5 mm are selected as fine aggregates for subsequent use through sieve analysis;
[0050] 2) Weigh the raw materials according to the ratio of each raw material, and set aside:
[0051] 3) Mix and stir the required amount of cement and expanded perlite evenly to obtain a mixed dry material;
[0052] 4) Add the required amount of water reducing agent into the water, and stir evenly to obtain a mixture;
[0053] 5) Add the mixed solution prepared above into the ...
Embodiment 3
[0059]A cement-based electromagnetic wave impedance matching material: the weight ratio of ordinary Portland cement, expanded perlite, ceramic waste, polycarboxylate superplasticizer and water is 500:300:300:3:250, wherein expanded perlite particles The diameter is 3.5mm, the water content is 2.7%; ceramic waste SiO 2 The content is 69.2%.
[0060] The preparation method of above-mentioned material comprises the steps:
[0061] 1) The ceramic waste is crushed with a jaw crusher, and particles with a nominal diameter of 4.75 mm are selected as fine aggregates for subsequent use through sieve analysis;
[0062] 2) Weigh the raw materials according to the ratio of each raw material, and set aside:
[0063] 3) Mix and stir the required amount of cement and expanded perlite evenly to obtain a mixed dry material;
[0064] 4) Add the required amount of water reducing agent into the water, and stir evenly to obtain a mixture;
[0065] 5) Add the mixed solution prepared above into ...
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