▎ 摘　　要

NOVELTY - A wear-resistant rubber sealing ring comprises 60-75 pts. wt. 26-type fluororubber, 10-30 pts. wt. 23-type fluororubber, 10-20 pts. wt. silicone rubber, 1-15 pts. wt. graphene, 10-30 pts. wt. white carbon black, 0.05-2 pts. wt. silane coupling agent, 2-3 pts. wt. magnesia, 1-1.5 pts. wt. anti-aging agent, and 2-8 pts. wt. bisphenol AF. USE - Wear-resistant rubber sealing ring. ADVANTAGE - The fluororubber has excellent high-temperature resistance and oil resistance. The silicone rubber has excellent low-temperature resistance. The combined use of fluororubber and silicone rubber greatly improves the temperature resistance and oil resistance, and expands the use of occasions. The layer structure of graphene has a certain self-lubricating effect, which can reduce the friction coefficient of the combined rubber surface to a certain extent, can directly improve the physical properties of the rubber, and improve the wear resistance of the rubber sealing ring. The joint use of graphene, white carbon black and 3-mercaptopropyltriethoxysilane effectively improves the wear resistance of the rubber seal ring made of fluoroelastomer and silicone rubber, and prolongs the service life of the rubber seal ring. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation method of wear-resistant rubber sealing ring, which involves (S1) putting 26-type fluororubber and 23-type fluororubber on an open mill for plasticating, where the roller temperature is 30-50 degrees C, the roller distance is 0.8-1.2 mm, plasticating for 10-15 minutes, adjusting the roller distance to be 4-5 mm, orderly adding white carbon black, magnesium oxide, and bisphenol AF to obtain mixed rubber (A), (S2) orderly adding white carbon black, anti-aging agent, and bisphenol AF to a silicon rubber wrapping roller to obtain mixed rubber (B), (S3) mixing the mixed rubber (A) and mixed rubber (B) to obtain mixed rubber, adding graphene and silane coupling agent to the mixed rubber to obtain a masterbatch, and (S4) putting the masterbatch in a flat vulcanizing machine mold for one time vulcanizing, after one time vulcanization, and taking out the finished product in an oven for secondary vulcanization.