▎ 摘 要
NOVELTY - Synthetic material comprises 70-80 pts. wt. butadiene rubber, 15-20 pts. wt. carbon black, 2-5 pts. wt. aluminum hydroxide, 3-5 pts. wt. magnesium nitrate, 2-4 pts. wt. graphene, 1-2 pts. wt. lubricant and 2-5 pts. wt. vulcanizing agent. USE - Synthetic material for manufacturing multipurpose valve sealing gasket for crane (claimed). ADVANTAGE - The synthetic material has longer life, good dispersion effect and oil resistance, and is cost-effective and resilient.