▎ 摘　　要

NOVELTY - Swelling rubber in contact with water and oil comprises 25 pts. wt. oil-absorbing resin, 8-12 pts. wt. rubber, 29-36 pts. wt. water-absorbing resin, 15-25 pts. wt. reinforcing agent, 3-5 pts. wt. crosslinking agent, and 6-10 pts. wt. other additives, where the other additive comprises antioxidant, anti-aging agent, plasticizer, vulcanizing agent and initiator. USE - The swelling rubber in contact with water and oil is used for sealing device. ADVANTAGE - The swelling rubber maintains sufficient strength and toughness after absorbing water and oil, is suitable for long-term exposure to the oil-water interface or alternately changing environment, with excellent resilience and long acting time, and realizes free management of the sealing device. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the swelling rubber in contact with water and oil, which involves (i) performing water-absorbent resin pretreatment by placing water-absorbent resin in a blast dryer, and drying at 80-100 degrees C for 2-3 hours, (ii) blending the water-absorbing resin, oil-absorbing resin and rubber on an internal mixer at 170-175 degrees C, and rotation speed of 45-80 rpm for 8-15 minutes, sequentially adding antioxidant, reinforcing agent, anti-aging agent and plasticizer, uniformly stirring, and adding crosslinking agent, vulcanizing agent and initiator to obtain a blended rubber, and (iii) performing flat vulcanization by compression molding the blended rubber in a compression molding machine at 170-185 degrees C, pre-pressing time of 8-15 minutes, and vulcanization time of the flat plate of 3-5 minutes, and cold pressing for 3-6 minutes to obtain the molded product that is the swelling rubber in contact water and oil.