Verfahren zur kontinuierlichem Herstellung von Silikongummizusammensetzung

摘要

A method is provided for (rapidly) producing a silicone rubber base, containing an electrically conductive filler that has a specific surface of at least 0.5 m<2>/g, which is homogeneously dispersed in an organopolysiloxane without formation of undesirable clumps or lumps. The method includes the steps of continuously supplying to a continuous mixing apparatus (A) 100 weight parts of polyorganosiloxane that has a viscosity at 25 DEG C of 100 to 500,000 mPa.s comprising at least two silicon-bonded alkenyl groups molecule, (B) 0.1 to 700 weight parts of electrically conductive inorganic filler with a surface of at least 0.5 m<2>/g wherein the combined quantity of components (B) and (C) is from 5 to 700 weight parts, and (C) 0 to 200 weight parts of electrically nonconductive inorganic filler wherein the continuous mixing apparatus has a cylindrical body casing with a material feed opening at the top of said casing, a mixture discharge outlet at the bottom of said casing, and a rotating disk within said casing such that the ratio of the diameter of the rotating disk to the inside diameter of said casing is 0.80 to 0.95; mixing components (A) through (C) by rotation of said disk to form a mixture; and then discharging said mixture through said discharge outlet.