Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement-based wave absorber with multi-scale scattering structure and preparation method of cement-based wave absorber
The invention discloses a cement-based wave absorber with a multi-scale scattering structure and a preparation method of the cement-based wave absorber. The cement-based wave absorber with the multi-scale scattering structure takes cement, scattering aggregates and electromagnetic scattering elements as main raw materials, the multi-scale scattering structure is jointly formed by nanoscale electromagnetic scattering elements, micron and/or millimeter-scale scattering aggregates and centimeter-scale surface scattering structures, and the raw materials comprise dry materials and water, wherein the dry material comprises the following components in percentage by mass: 15-75% of cement, 20-80% of scattering aggregate, 1-20% of electromagnetic scattering element, 0-1% of dispersing agent and 0-1.5% of water reducing agent, and the mass ratio of water to the dry material is 0.45-0.65. The cement-based wave absorber disclosed by the invention has the advantages of good wave absorbing effect, wide wave absorbing frequency band (1-40GHz wave absorbing performance is superior to-15dB, and the optimal wave absorbing performance reaches-50dB), high mechanical strength (28-day compressive strength is 78.5 MPa) and wide application prospect, and can meet the requirements of human settlement environment electromagnetic protection and national defense engineering construction.
本发明公开了一种多尺度散射结构水泥基吸波体及其制备方法。所述多尺度散射结构水泥基吸波体以水泥、散射集料和电磁散射基元为主要原料，由纳米尺度电磁散射基元、微米和/或毫米尺度散射集料以及厘米尺度表面散射结构共同构成多尺度散射结构，其原料包括干物料和水，其中干物料各组分所占质量百分比为：水泥15%~75%，散射集料20%~80%，电磁散射基元1%~20%，分散剂0~1%，减水剂0~1.5%，水与干物料的质量比为0.45‑0.65。本发明的水泥基吸波体具有吸波效果好、吸波频带宽（1~40GHz吸波性能优于‑15dB，最优吸波性能达‑50dB）、力学强度高（28天抗压强度78.5MPa），可满足人居环境电磁防护与国防工程建设需求，应用前景广阔。
Cement-based wave absorber with multi-scale scattering structure and preparation method of cement-based wave absorber
The invention discloses a cement-based wave absorber with a multi-scale scattering structure and a preparation method of the cement-based wave absorber. The cement-based wave absorber with the multi-scale scattering structure takes cement, scattering aggregates and electromagnetic scattering elements as main raw materials, the multi-scale scattering structure is jointly formed by nanoscale electromagnetic scattering elements, micron and/or millimeter-scale scattering aggregates and centimeter-scale surface scattering structures, and the raw materials comprise dry materials and water, wherein the dry material comprises the following components in percentage by mass: 15-75% of cement, 20-80% of scattering aggregate, 1-20% of electromagnetic scattering element, 0-1% of dispersing agent and 0-1.5% of water reducing agent, and the mass ratio of water to the dry material is 0.45-0.65. The cement-based wave absorber disclosed by the invention has the advantages of good wave absorbing effect, wide wave absorbing frequency band (1-40GHz wave absorbing performance is superior to-15dB, and the optimal wave absorbing performance reaches-50dB), high mechanical strength (28-day compressive strength is 78.5 MPa) and wide application prospect, and can meet the requirements of human settlement environment electromagnetic protection and national defense engineering construction.
本发明公开了一种多尺度散射结构水泥基吸波体及其制备方法。所述多尺度散射结构水泥基吸波体以水泥、散射集料和电磁散射基元为主要原料，由纳米尺度电磁散射基元、微米和/或毫米尺度散射集料以及厘米尺度表面散射结构共同构成多尺度散射结构，其原料包括干物料和水，其中干物料各组分所占质量百分比为：水泥15%~75%，散射集料20%~80%，电磁散射基元1%~20%，分散剂0~1%，减水剂0~1.5%，水与干物料的质量比为0.45‑0.65。本发明的水泥基吸波体具有吸波效果好、吸波频带宽（1~40GHz吸波性能优于‑15dB，最优吸波性能达‑50dB）、力学强度高（28天抗压强度78.5MPa），可满足人居环境电磁防护与国防工程建设需求，应用前景广阔。
Cement-based wave absorber with multi-scale scattering structure and preparation method of cement-based wave absorber
多尺度散射结构水泥基吸波体及其制备方法
XIE SHUAI (Autor:in) / JI ZHIJIANG (Autor:in) / WU ZIHAO (Autor:in) / WANG JING (Autor:in) / CHEN JIHAO (Autor:in) / CAO YANXIN (Autor:in) / ZHANG JINJUN (Autor:in) / LIU RUIRUI (Autor:in)
09.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2022
Three-layer microwave absorber using cement-based composites
| Online Contents | 2011