Additives and/or additive-additive combinations for compounding, thermoplastic plastic comprising same and use of the plastic
AssigneeMOCOM Compounds GmbH & Co. KG
InventorsBjoern OTTO, Klaus GEBHARDT, Christian LOSSAU
Life of this patent
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Abstract
In order to achieve shielding in the electric and in the magnetic field of greater than 20 dB, a plastic having a compounded first magnetic additive or having two different compounded magnetic additives or having a magnetic additive and an electrically conductive additive is proposed.
Claims12
A magnetic additive and/or electrically conductive additive for compounding in a preferably thermosoft plastic in order to impart the plastic with properties for shielding against EMI radiation, characterized in that not only the electric field, but also the magnetic field is shielded.
A thermosoft plastic comprising a compounded filler, the thermosoft plastic having shielding behavior in the magnetic and in the electric field of greater than 20 dB each for objects made thereof or comprising the same and having a wall thickness between 1 and 4 mm, preferably 2 mm, characterized in that the compounded filler is a first magnetic additive or a mixture of a first and a second magnetic additive or a mixture of a magnetic additive and an electrically conductive additive.
The thermosoft plastic according to any one of the preceding claims, characterized in that the plastic selected is from the group formed by PA, PA6, PA66, PPS, PC, ABS, and copolymers of PC and ABS.
The thermosoft plastic according to any one of the preceding claims, characterized in that said plastic comprises a PC-ABS in which a magnetic additive Ag—Cu-20 having a D50 value between 8 μm and 13 μm is compounded at a weight proportion of the entire plastic between 5 wt % and 10 wt %, and an MWCNT as the electrically conductive additive at 2 wt % to 5 wt %, particularly in the form of 13.3 wt % to 33.3 wt % of a mixture of PC and MWCNT under the trade name Plasticyl PC1501.
Dependencies are inferred from the claim text.