LOUDSPEAKER DIFFUSER FROM COMPOSITE MATERIAL Russian patent published in 2012 - IPC H04R7/00 H04R31/00

Abstract RU 2453071 C1

FIELD: machine building.

SUBSTANCE: loudspeaker diffuser comprises matrix from porous nickel with degree of porosity varying from 90% to 98% with aluminium foil glued on its surface by glue composition based on epoxy resin and hardener. Additionally, hardening filler is added to epoxy resin and made up of 1-1000 nm-grain size powder of material with elasticity modulus exceeding 2.46 GPa in amount of up to 50 vol. % and carbon nanotubes in amount of 0.01-10 vol. %.

EFFECT: higher rigidity and hardness.

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RU 2 453 071 C1

Authors

Kozlov Mikhail Romanovich

Dates

2012-06-10—Published

2011-02-17—Filed