Process for electrostatic impregnation of a powder into a network
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United States of America Patent
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May 11, 2004
Issued Date -
N/A
app pub date -
May 2, 2000
filing date -
Nov 4, 1997
priority date (Note) -
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Abstract
The invention concerns an impregnation method for producing in particular a composite material comprising a fiber or filament array and a continuous matrix, rigid or flexible, with which said array is in close contact. The method is characterized in that said matrix is incorporated in said array in powder form before being transformed to constitute the continuous matrix. It consists in placing the powder and said fiber or filament in an electrostatic field with an alternating current voltage of at least 20 kV for at least 5 s.
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