Electrically conductive flexible compositions, and materials and methods for making same
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United States of America Patent
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Mar 18, 2003
Grant Date -
N/A
app pub date -
Feb 12, 1999
filing date -
Feb 12, 1999
priority date (Note) -
Expired
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Abstract
An electroconductive composition comprising an elastic matrix material and particulate filler material dispersed therein, the particulate filler material comprising fiber particles coated with a conductive material and spheroidal particles coated with a conductive material, the dispersion being such that the fiber-containing particulate filler and the spheroid-containing particulate filler are substantially interspersed, the particulate filler being present in an amount such that the conductive-material coated particles are in electroconductive relationship and such that the composition possesses enhanced flexibility, the conductive material being present in an amount sufficient that the composition has a decreased resistivity. The invention also encompasses a method of preparing these compositions comprising the steps of compounding said filler into a precursor of said flexible matrix material thereby dispersing said fillers throughout the matrix material, and curing the precursor to form the matrix.
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