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Polymeric composites with metal nanopowders for applications in electromagnetic interference (EMI) shielding

The offered product is innovative in relation to traditionally used metal shields due to its properties characteristic of electromagnetic metamaterials.


A brief description of the process

The fillers of the composites are powders, nano-powders and/or nano-flakes of copper and other metals obtained from industrial waste waters and electrolytes according to the ICRI patent pending technology. The extrusion method is used to produce polymeric composites based on the polymer (e.g. EVA/HFFR) matrix with added copper nanopowder filler.


Advantages of the technology offered

The technology is based on the most recent achievements in the production of a qualitatively new group of metal nano-fillers in the form of copper and other metals powders and flakes. Since the nanopowders fillers are obtained from industrial waste waters the technology promotes pro-ecological manufacturing practices. Another key advantage of the patent pending technology is low production cost of both the nanofillers and composites. In comparison to metal shields traditionally used to reduce electromagnetic interferences (EMI), polymeric composite materials are characterized by low specific weight, good corrosion resistance, elasticity and easy processability.


Equipment

Nanopowders are produced on the laboratory scale using a two-electrode system with a potentiostat of type AUTOLAB GSTST30 made by EcoChemie.

The following procedure is used in order to obtain polymeric composites with nanopowders fillers:

  • single- or twin-screw extruder,
  • electrically heated metering mixer for PLASTI-CORDER device produced by BRABENDER Company,
  • hydraulic press.

The mechanical and dielectric properties of the obtained composites are studied. In order to observe the structure and to perform qualitative chemical analysis of the composites a SEM with EDS is used.


Advancement of proceedings

The technology has been developed to obtain a group of polymeric composites, displaying low electric conductance and simultaneously characterized by very good ability to EMI shielding. For preliminary laboratory scale tests on the laboratory scale a material with the desired properties was selected and subsequently, after scale-up of the manufacturing process (to pilot scale) the obtained composite was tested in a company dealing with cable production (in Poland and Israel).


Patentability

Patent applications: PCT/PL2010/000022 and UP RP P 392 282.


Market competitiveness

The technology employs modern, pro-ecological, innovative nanotechnology (which is in-line with EU policy see e.g. FP7 projects calls). The technology is cost effective and based on recycling of copper recovered from industrial waste waters, hence its potential patent rights purchasers might have opportunity to get e.g. EU and public financial support for its implementation.


Type of expected cooperation

Cooperation with flash-investors and cooperative scientific-research works.


Information

Dr. Przemysław Łoś, D.Sc.

phone: + 48 22 568 20 61

Dr. Regina Jeziórska, D.Sc., Eng., prof. of ICRI

phone: + 48 22 568 24 91