Preparation of a conductive liquid silicone rubber composition

A method of manufacturing a conductive liquid silicone rubber composition comprising mixing the following components:

• (A) a mixture of a conductive filler with a liquid diorganopolysiloxane having two or more silicon-bonded alkenyl groups in one molecule;
• (B) a mixture of a conductive filler with a liquid diorganopolysiloxane having two or more silicon-bonded alkenyl groups in one molecule and a volume resistivity different from that of (A);
• (C) a catalytic agent that comprises a platinum-based catalyst;
• and
• (D) a cross-linker that comprises an organopolysiloxane having two or more silicon-bonded hydrogen atoms in one molecule;
• wherein the volume resistivities of components (A) and (B) are in accordance with the following relationship 10≦Ra/Rb≦100000, and wherein 103 Ohm·cm≦Ra≦1013 Ohm·cm;
• 102 Ohm·cm ≦Rb≦1012 Ohm·cm wherein Ra is the volume resistivity of a formed article obtained by mixing component (A) with the components (C) and (D) with subsequent thermal curing of the mixture, and wherein Rb is the volume resistivity of a formed article obtained by the same method from component (B).