Polymeric compositions having a temperature-stable dielectric co

Details Polymeric compositions having a temperature-stable dielectric co Polymeric compositions having a temperature-stable dielectric co

1997-01-31

1999-10-12

Resan, Stevan A.

Stock material or miscellaneous articles

Composite

Of metal

428323, 428325, 428328, 428461, 428500, 428689, 428901, 1062864, 3613211, 361750, B32B 300

Patent

active

059652730

ABSTRACT:
A polymeric composition which has a dielectric constant K' greater than 4 at 20.degree. C. which varies little with temperature is made from a polymer or mixture of polymers and a ceramic or a mixture of ceramics, where the polymer or mixture of polymers has a dielectric constant K' in the range of about 1.5 to about 3.5 and a temperature coefficient of dielectric constant TCK' that is negative and is between 0 and about -300 ppm/degree C.; and the ceramic includes a first ceramic, which may be one ceramic or a mixture of ceramics, each having a dielectric constant in the range of about 15 to about 200 and a TCK' that is positive and is between zero and about 3000 ppm/degree C.; and an optional second ceramic, which may be one ceramic or a mixture of ceramics, each having a dielectric constant in the range from about 3 up to about 15 and a TCK' that is positive and is between zero and about 300 ppm/degree C.

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S. Asai, et al., "Fabrication of an Insulated Metal Substrate having an Insulating layer with a High Dilectric Constant" IEEE Transactions on Components, Hybrids and Manufacturing Technology, vol. 16, No. 5, Aug., 1993, pp. 499-504.

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