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Due to the rapid development of rubber and rubber manufacturing industry various rubber products such as sealing rings,conveyor belts,rubber hoses,various vehicle tire,rubber shoes,wires and cables,sports products and toys are widely used in peoples daily life and production.However,in the process of application of rubber products,we often find that these products tend to become brittle and harden or become sticky and soft,yellow and dark in color,crack and frost on the surface.The reason for this is that the physical and chemical properties and mechanical properties of rubber products are changed by physical and chemical effects such as being easily affected by oxygen,ozone or thermal,optical and mechanical forces in the air during the process of production,processing,storage or application,resulting in the degradation of physical and mechanical properties,deterioration of chemical properties and reduction of resilience of rubber products and changes in the properties of rubber itself,resulting in the life of rubber products.Therefore,preventing or delaying the aging of rubber products has become an important technical index.
For different aging mechanisms and methods to prevent aging,anti-aging agents are generally divided into anti-oxidants,anti-ozone agents,metal ion deactivators,anti-fatigue anti-aging agents,photo-oxidation anti-aging agents,anti-mildew and anti-ant agents[2].According to the components and molecular structure contained in the antiager,it can be divided into naphthylamine,phenol,quinolone,p-phenylenediamine and so on.Amine antiager as an antiager with the earliest development,the most extensive application and the most varieties has excellent protective performance but also has great pollution.It is widely used in dark products,causing great harm to health and damaging the environment.The phenolic antioxidant developed later reduced the pollution to the environment and can be used in light colored products which have been developed to a certain extent.However,its protective efficiency is still not enough to completely replace the amine antioxidant.Therefore,the development of antioxidant with excellent performance and environmental friendliness is a trend of antioxidant development in the future.
For different aging mechanisms and methods to prevent aging,anti-aging agents are generally divided into anti-oxidants,anti-ozone agents,metal ion deactivators,anti-fatigue anti-aging agents,photo-oxidation anti-aging agents,anti-mildew and anti-ant agents[2].According to the components and molecular structure contained in the antiager,it can be divided into naphthylamine,phenol,quinolone,p-phenylenediamine and so on.Amine antiager as an antiager with the earliest development,the most extensive application and the most varieties has excellent protective performance but also has great pollution.It is widely used in dark products,causing great harm to health and damaging the environment.The phenolic antioxidant developed later reduced the pollution to the environment and can be used in light colored products which have been developed to a certain extent.However,its protective efficiency is still not enough to completely replace the amine antioxidant.Therefore,the development of antioxidant with excellent performance and environmental friendliness is a trend of antioxidant development in the future.