| abstract |
A silicone rubber composition that generates a silicone rubber having excellent heat resistance which, even when exposed to high temperatures, undergoes minimal change in physical properties such as hardness, tensile strength, and breaking elongation. Specifically, a silicone rubber composition having excellent heat resistance, comprising: n(A) 100 parts by mass of an organopolysiloxane having a polymerization degree of at least 100 and containing at least two alkenyl groups bonded to silicon atoms within each molecule, n(B) 10 to 100 parts by mass of a reinforcing silica having a specific surface area measured by the BET method of at least 50 m 2 /g, n(C) 0.01 to 10 parts by mass of a zirconia-ceria solid solution, and n(D) an effective amount of a curing agent. |