| Electromagnetic
shielding |
 |
Electromagnetic waves can cause malfunctions in various
electronic devices. Negative influence on human health is also being
investigated. Electromagnetic wave shielding should be used to
protect electronic devices and rooms interiors from electromagnetic
waves.
The material for this
purpose should possess good electric conductivity to minimize the
penetration of waves into the material and low magnetic permeability
to convert magnetic energy into heat. |
|
|
| Test Method:
Electric and magnetic shielding
test by KEC method.
Trial Sample:
Alulight-sheets (140x140x8,5
mm) with the density of 510 kg/m3 were used as
specimens. silicon steel sheet (140x140x0,5 mm) and bulk aluminum
sheet (140x140x10 mm) were used as the reference materials. |
|
|
|
| Electrc field
shielding effectiveness as a function of frequency for samples
of the same weight. |
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| Summary
Results: |
Main Applications:
|
- Alulight®
possesses very good magnetic field shielding effectiveness.
- electric
shielding effectiveness of Alulight® is comparable
with the one of silicon steel for frequencies up to 10 MHz.
Alulight® is superior for higher frequencies.
- electromagnetic shield
effectiveness of Alulight® depends significantly
on the frequency
|
- cover
boxes for electronic devices
- wall and ceiling plates for protection of rooms against
entering or releasing of electromagnetic waves within the
frequency range of 0,1 bis 1000 MHz
|
