Heat conductive silicone gel composition, heat conductive silicone sheet and its manufacturing method

摘要

An organopolysiloxane containing at least two alkenyl groups in one molecule(b) an organohydrogenpolysiloxane having at least two hydrogen atoms directly bonded to a silicon atomPlatinum group metal based catalystsFor a total of 100 mass parts of the above (a) - (c) component(d) the aluminum hydroxide particle which is a thermally conductive particle containsWhen this is used as a parent (D-1) particle size (D50) is μ More than 40% by weight of aluminum hydroxide particles over(D-2) particle size (D50) is μ Aluminum hydroxide particles less than m contain 25% by mass and 60% by mass or lessThe dielectric constant of the interdielectric bridge method isShore OO hardness is 5 to 60.This provides a silicone gel composition with high safety, flexibility, low dielectric constant, and heat conductivity, using external material for GHS classification.