▎ 摘　　要

NOVELTY - High-temperature-resistant and low-expansion rubber material comprises comprises 100 pts. wt. ethylene propylene diene monomer, 3-5 pts. wt. zinc oxide, 0.05 pts. wt. graphene, 15-20 pts. wt. acetylene carbon black, 0.1-0.2 pts. wt. calcium hydroxide, 1.5 pts. wt. antioxidant 4010, 1 pts. wt. 2,2'-methylenebis(4-methyl-6-tert-butylphenol) (antioxidant 2246), 1.5 pts. wt. antioxidant 246, 2.8-3 pts. wt. dicyclohexyl phthalate (DCP), 0.3 pts. wt. triallyl isocyanurate (TAIC), 16-22 pts. wt. zirconium vanadate (ZrV2O7). USE - Nuclear island device for spare high temperature resistant low expansion rubber material used in pressurized water reactor nuclear power plant (PWRP). ADVANTAGE - The nuclear island device spare high temperature resistant low expansion rubber material can ensure the nuclear island equipment 6 years normal operation and can stably move and maintain the sealing state ≮ 24 hours when nuclear island accident, preventing loop water leakage and loop water loss caused by a loop of water loss due to a more serious accident. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation method of the high temperature resistant low expansion rate rubber material comprising: (S101) using the open mill and special ultrasonic auxiliary device, turn on device, adjusting the open mill roller distance to 0.3-0.5 mm, weighing ethylene propylene rubber, roller, packing roller, discharging the excess rubber for further use, weighing and adding graphene, mixing uniformly, accumulating for 10-15 hours, the mixed material is lower, obtaining pre-mixed material 1; (S102) adjusting the open mill roller distance to 2-3 mm, the premix 1 comprises roller, adding zirconium vanadate, mixing uniformly, the open mill roller distance is adjusted to 0. 5 mm, thin through multiple times lower sheet to obtain the premix 2; (S103) adjusting open mill roller distance to 2-3 mm, weighing and adding zinc oxide, calcium hydroxide, antioxidant 4010, antioxidant 2246, antioxidant 246, mixing uniformly, thinly passing and rolling out multiple times to obtain the premix 3; (S104) open mill roller distance is adjusted to 3-4 mm, sequentially acetylene carbon black, DCP, TAIC, the roller distance is adjusted to 0. 5 mm, diluting for multiple times to obtain the mixed rubber; (S105) placing mixing glue in the mold, closing and vulcanizing on the flat vulcanizing machine to obtain the high temperature resistant rubber material with low expansion rate.