Patent ID: 6521150
Filing Date: 2003-02-18
Classification: H01Q,H05K,Y10T

Abstract:
A method for producing an electromagnetic wave absorbing thermoconductive silicone gel molded sheet comprising metal oxide magnetic particles and a thermoconductive filler, comprising the steps of:adding metal oxide magnetic particles and a thermoconductive filler, wherein the metal oxide magnetic particles are at least one kind of magnetic material selected from the group consisting of Mnâ€”Zn ferrite and Niâ€”Zn ferrite, to a silicone gel and mixing to form a mixture of a uniform composition; degassing the mixture with a deaerator; sandwiching the degassed mixture vertically with supporting films of a predetermined shape; and hardening the mixture by press-molding while heating to form a 1 mm thick sheet having a voltage attenuation of at least 10 dB at a frequency in the range of 10-1000 MHz.