Hydroxyl-terminated phenylene ether silicone rubber and preparation method thereof

A preparation method of the hydroxyl-terminated phenyl ether silicone rubber comprises the following steps: mixing 50-60 parts by weight of octamethylcyclotetrasiloxane, 10-30 parts by weight of 4, 4 '-diphenyl-1, 3, 4, 5, 6-tetramethyl-1, 3, 5, 6-tetramethyl-1, 3, 5, 6-tetramethyl-1, 3, the preparation method comprises the following steps: mixing 4, 4 '-bis (dimethyl hydroxyl silyl) diphenyl ether or a mixture of 4, 4'-bis (dimethyl hydroxyl silyl) diphenyl ether and 1, 4-bis (dimethyl hydroxyl silyl) benzene with 10-20 parts of hydroxyl silicone oil, and then carrying out vacuum drying; adding a catalyst, heating in an inert atmosphere, and stirring for reaction to prepare a siloxane copolymer; heating to destroy the catalyst; raising the temperature to 170 to 200 DEG C and reacting for 0.5 to 2 hours under the pressure of 5 to 10 mmHg; hydroxyl-terminated phenylene ether silicone rubber reacts with hydrogen-containing silicone oil to form hydrogen to be released, and the hydrogen can be used as a foaming a