CONTINUOUS PROCESS ASSISTED BY ULTRASOUND OF VARIABLE FREQUENCY AND AMPLITUDE FOR THE PREPARATION OF NANOCOMPOSITES BASED ON POLYMERS AND NANOPARTICLES
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United States of America Patent
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Issued Date -
Apr 26, 2012
app pub date -
Apr 7, 2010
filing date -
Apr 8, 2009
priority date (Note) -
Abandoned
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Abstract
The invention relates to a continuous mixing/extrusion method, assisted by ultrasound waves with a variable amplitude and frequency, for the preparation of nanocompounds based on polymers, preferably thermoplastics and nanoparticles, at a concentration of up to 60 wt.-% of the total weight of the polymer/nanoparticle mixture. According to the invention, the polymer/nanoparticle mixture is subjected in the molten state to a discrete and continuous sweep with a variable amplitude and frequency, of between 15 kHz and 50 kHz.
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