Carbon Building Material Mixture for Electromagnetic Radiation Absorption
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Solution Overview
Problem
Existing building material mixtures for electromagnetic radiation shielding primarily rely on reflection, which is ineffective in significantly reducing electromagnetic radiation, as the radiation is merely redirected rather than absorbed, posing occupational and safety risks in high-frequency areas.
Innovation Solution
A building material mixture comprising 10-95% carbon and 2-70% binder, with loose particles partially coated with an electrically conductive material, enhancing absorption and reflection properties to convert electromagnetic radiation into heat within the material's thickness, thereby reducing overall radiation penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If building material mixtures use reflection-based shielding, then electromagnetic radiation is redirected away from penetrating barriers, but the overall radiation is not significantly reduced and is merely reflected into other areas
Solution Approach 1:
The patent changes the physical and chemical parameters of the building material by incorporating carbon (10-95% by weight) and electrically conductive materials (1-80% by weight) to transform the material's interaction with electromagnetic radiation from primarily reflective to primarily absorptive. This parameter change enables the material to convert electromagnetic energy into thermal energy, fundamentally altering the shielding mechanism.
Solution Approach 2:
The patent creates a composite building material mixture combining carbon-based materials with electrically conductive fillers (such as graphite, metal particles, or conductive oxides) and traditional building material components (binders, aggregates). This composite structure synergistically combines the electromagnetic absorption properties of carbon with the electrical conductivity of metal particles, achieving superior radiation shielding through absorption rather than reflection.
2Object-affected harmful factors
If building material mixture contains high carbon content for absorption, then electromagnetic radiation absorption increases, but thermal conductivity for surface heating systems must also be maintained
Solution Approach 1:
The patent achieves multi-functionality by selecting carbon-based materials that simultaneously provide electromagnetic radiation absorption and thermal conductivity. The carbon content (10-95% by weight) serves dual purposes: absorbing electromagnetic energy while also conducting heat efficiently, enabling the material to function both as an electromagnetic shield and as a thermal management material for surface heating systems.
Solution Approach 2:
The patent optimizes the concentration and distribution parameters of carbon and electrically conductive materials to achieve the desired balance between electromagnetic absorption and thermal conductivity. By controlling the amount and arrangement of these materials within the building matrix, the patent tunes both the electromagnetic and thermal properties to meet simultaneous performance requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The material achieves high electromagnetic shielding through absorption, with absorption rates exceeding 50% compared to reflection, effectively neutralizing electromagnetic radiation and supporting surface heating systems with high thermal conductivity.
Implementation Method 1
the radiation within the thickness of the material in the screen is converted into heat and thus destroyed
Implementation Method 2
the Surface of the loose particles are at least partially pre-coated with an electrically conductive material
Implementation Method 3
the building material mixture also comprises 1 to 80% by weight of loose particles, the Surface of the loose particles are at least partially pre-coated with an electrically conductive material
Implementation Method 4
The plaster should have a very high thermal conductivity in order to support surface heating systems
Data Source
Figure 1~4
AI summary
The invention relates to a building material mixture, the dry material having 10 - 98 wt.% carbon and 2 - 70 wt.% binder, characterised in that the building material mixture also comprises 1 - 80 wt.% loose particles, the surface of the loose particles being coated at least partially with an electrically conductive material.