Ads
related to: 3m static shielding bags for wood stoves
Search results
Results From The WOW.Com Content Network
It was developed by Custom Materials, now part of 3M. [2] Velostat is a U.S. registered trademark (4,964,564) of Desco Industries Inc. Desco Industries purchased the assets of the 3M Static Control business on January 2, 2015. [3] Velostat is piezoresistive; its resistance changes with flexing or pressure.
Conductive antistatic bags are manufactured with a layer of conductive metal, often aluminum, [3] and a dielectric layer of plastic [2] covered in a static dissipative coating. This forms both a shield and a non-conductive barrier, shielding the contents from static charge via the Faraday cage effect.
Conductive ESD bag with a network card inside ESD shoes. Electrostatic discharge materials (ESD materials) are plastics that reduce static electricity to protect against damage to electrostatic-sensitive devices (ESD) or to prevent the accidental ignition of flammable liquids or gases.
Most garments are not conductive enough to provide personal grounding, so antistatic wrist and foot straps are also worn. There are three types of static control garments that are compliant to the ANSI/ESD S20.20-2014 standards: 1) static control garment, 2) groundable static control garment, 3) groundable static control garment system. [10]
Effectiveness of the shielding of a static electric field is largely independent of the geometry of the conductive material; however, the static magnetic fields can penetrate the shield completely. In the case of varying electromagnetic fields, the faster the variations are (i.e., the higher the frequencies), the better the material resists ...
For static or slowly varying magnetic fields (below about 100 kHz) the Faraday shielding described above is ineffective. In these cases shields made of high magnetic permeability metal alloys can be used, such as sheets of permalloy and mu-metal [ 9 ] [ 10 ] or with nanocrystalline grain structure ferromagnetic metal coatings. [ 11 ]
Ads
related to: 3m static shielding bags for wood stoves