Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cement-based wave-absorbing structure and preparation method thereof
The invention belongs to the field of functional building materials, and particularly relates to a cement-based wave-absorbing structure and a preparation method thereof. The EPP is doped into the cement mortar, the double-layer cement-based wave-absorbing structure with the concave-convex surface is prepared on the basis of a single-layer coagulation method by regulating and controlling the amount of a high-molecular binder and using a vibration mode, and the double-layer cement-based wave-absorbing structure has the advantages of wide absorption frequency band, efficient absorption, easiness in preparation, low cost, good mechanical performance and the like, a test sample with the total EPP filling rate being 30% has the bandwidth lower than-10dB within the frequency band of 2-18GHz being 13.96 GHz, the average reflectivity being-14.08 dB, the breaking strength and the compressive strength being 4.5 MPa and 29.9 MPa respectively, and the density being about 70% of that of a pure cement material, and both the economical efficiency and the practicability meet the requirements of current building wave-absorbing materials. The cement-based composite material can be produced on a large scale and applied to civil buildings, ground military targets, microwave darkrooms and other scenes, and has guiding significance in application of the cement-based composite material integrating wave absorption and load bearing.
本发明属于功能建筑材料领域，具体涉及一种水泥基吸波结构及其制备方法。本发明在水泥砂浆中掺入EPP，通过调控高分子粘结剂的量和使用振动的方式，基于单层凝结法制得具有凹凸表面的双层水泥基吸波结构，具有吸收频带宽、高效吸收、容易制备、成本低、机械性能良好等优点，其中，EPP总填充率为30％的试样在2～18GHz频段内低于‑10dB的带宽为13.96GHz，平均反射率为‑14.08dB，抗折强度和抗压强度分别为4.5MPa和29.9MPa，密度约为纯水泥材料的70％，在经济性和实用性上均满足当前建筑吸波材料的需求。本发明可大规模生产应用于民用建筑、地面军事目标、微波暗室等场景，对吸波和承重一体化的水泥基复合材料的应用具有指导意义。
Cement-based wave-absorbing structure and preparation method thereof
The invention belongs to the field of functional building materials, and particularly relates to a cement-based wave-absorbing structure and a preparation method thereof. The EPP is doped into the cement mortar, the double-layer cement-based wave-absorbing structure with the concave-convex surface is prepared on the basis of a single-layer coagulation method by regulating and controlling the amount of a high-molecular binder and using a vibration mode, and the double-layer cement-based wave-absorbing structure has the advantages of wide absorption frequency band, efficient absorption, easiness in preparation, low cost, good mechanical performance and the like, a test sample with the total EPP filling rate being 30% has the bandwidth lower than-10dB within the frequency band of 2-18GHz being 13.96 GHz, the average reflectivity being-14.08 dB, the breaking strength and the compressive strength being 4.5 MPa and 29.9 MPa respectively, and the density being about 70% of that of a pure cement material, and both the economical efficiency and the practicability meet the requirements of current building wave-absorbing materials. The cement-based composite material can be produced on a large scale and applied to civil buildings, ground military targets, microwave darkrooms and other scenes, and has guiding significance in application of the cement-based composite material integrating wave absorption and load bearing.
本发明属于功能建筑材料领域，具体涉及一种水泥基吸波结构及其制备方法。本发明在水泥砂浆中掺入EPP，通过调控高分子粘结剂的量和使用振动的方式，基于单层凝结法制得具有凹凸表面的双层水泥基吸波结构，具有吸收频带宽、高效吸收、容易制备、成本低、机械性能良好等优点，其中，EPP总填充率为30％的试样在2～18GHz频段内低于‑10dB的带宽为13.96GHz，平均反射率为‑14.08dB，抗折强度和抗压强度分别为4.5MPa和29.9MPa，密度约为纯水泥材料的70％，在经济性和实用性上均满足当前建筑吸波材料的需求。本发明可大规模生产应用于民用建筑、地面军事目标、微波暗室等场景，对吸波和承重一体化的水泥基复合材料的应用具有指导意义。
Cement-based wave-absorbing structure and preparation method thereof
一种水泥基吸波结构及其制备方法
ZHANG LINBO (Autor:in) / DENG ZHOU (Autor:in) / HOU MINGHUI (Autor:in) / DU YU (Autor:in) / YIN LIANGJUN (Autor:in) / GAO HAOYU (Autor:in) / ZHANG HANXUAN (Autor:in)
09.09.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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