Electric heating – Metal heating – Of cylinders
Patent
1989-12-07
1990-11-20
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1055F, 426107, 426234, 426243, 99DIG14, 126390, 428 353, 428 358, H05B 680
Patent
active
049720589
ABSTRACT:
The present invention provides a composite material for generation of heat by absorption of microwave energy comprising a porous dielectric substrate and a coating comprising a thermoplastic dielectric matrix and flakes of a micorwave susceptive material distributed within the matrix, said flakes having an aspect ratio of at least about 10, a generally planar, plate-like shape, with a thickness of about 0.1 to about 1.0 micrometers, a transverse dimension of about 1 to about 50 micrometers, and angular edges. The composite material exhibits decreased microwave transmission as a function of previously applied pressure.
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Benson Kenneth A.
Fong Dan S. C.
E. I. Du Pont de Nemours and Company
Leung Philip H.
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