Microwave-absorbing materials containing polar icosahedral molec

Details Microwave-absorbing materials containing polar icosahedral molec Microwave-absorbing materials containing polar icosahedral molec

1993-11-30

1996-11-12

Yoon, Tae

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

524404, 524490, 524495, 522 75, 501 12, 2523156, 568 3, G21F 110, C08K 338

Patent

active

055740774

ABSTRACT:
A microwave-absorbing material composed of blends of polar icosahedral molecular units with a variety of host matrices, or with polymers with the units covalently bonded in a pendant manner to the polymer chain. Both blends and polymers must impart a high degree of orientational mobility to the units so that they can absorb microwave radiation. These materials employ orientationally mobile, polar icosahedral molecular units as the source of dielectric loss at microwave frequencies. Examples of these units are the polar carboranes (ortho- and meta-carborane), polar carboranes with electronegative and/or electropositive substitutes, and polar "buckminsterfullerenes."

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