During long-term storage and use, rubber and its products will gradually become sticky due to the action of heat, oxygen, ozone, variable metal ions, mechanical stress, light, high-energy rays, and other chemicals and molds. Hard hair is brittle or cracked. This phenomenon in which the physical and mechanical properties decrease with time and the elasticity decreases is called aging. As the aging process progresses and develops, the properties of rubber and its products will gradually decrease, resulting in complete loss of use value. To this end, certain chemicals need to be added to rubber and its products to improve its resistance to the above-mentioned various destructive effects, delay or inhibit the aging process, thereby prolonging the shelf life and service life of rubber and its products. It is called an rubber antioxidant.