What do I need to pay attention to when choosing an antioxidant?
(l) add and effect.
The use of a variety of antioxidants, can promote their respective characteristics and effects, increasing the total effect. For example, the different evaporation or spatial resistance of the hindered phenols and when used, can promote their antioxidant effect in a wide range of temperatures, the effect is enhanced. If in the formula, only one kind of antioxidant is used, it is inevitable to participate in a larger amount, which will cause intense oxidation reactions at high concentrations, which is not allowed. But the choice of several low concentration of antioxidants and use, not only to achieve the desired intention, and also to prevent intense oxidation, and carry forward its additive effect.
(2) Synergistic effect.
①When two different activities of the main antioxidant and use, the high activity of the antioxidant to give hydrogen atoms, so that the oxidation of the active chain to stop; and low activity of the antioxidant can give the high activity of the antioxidant to supply hydrogen atoms, so that it regenerates and develops a durable antioxidant effect, so the antioxidant effect is very good.
②When the main and auxiliary antioxidants are used, attention should be paid to the development of synergistic effects. Such as the main antioxidant simply give hydrogen atoms, hydrogen atoms can make peroxide free radicals into hydroperoxides, stop the chain reaction; and then hydroperoxides and auxiliary antioxidant peroxide splitting agent effect, generate inactive stabilization products. Thus greatly slow down the speed of oxidation reactions, adding the antioxidant effect. Such as in the polyolefin widely used in the antioxidant 264 and DLPT system is an example.
③ an antioxidant molecule has two or more different stabilizing functions, called the self-synergistic effect, such as sulfur-containing hindered phenolic antioxidant, it has a chain reaction stopper and peroxide differentiation agent of the two-layer effect, this antioxidant can strengthen the antioxidant effect, is a more desirable antioxidant.
Ltd. and Shandong Sanfeng New Materials Co., Ltd. held the launching ceremony of 2021 "Quality Month" activities in front of Sanfeng Chemical Technology Center Building and Sanfeng New Materials Integrated Office Building respectively on September 1, 2021 around the theme of "Strengthening Quality Consciousness and Promoting Quality Development".
Recently, Linyi City, Shandong Province, Sanfeng Chemical Co., Ltd. launched the second phase of the antioxidant green integration project of Sanfeng New Materials, which is located in the Chemical Industry Park of Linyi City Lingang Economic Development Zone.
In order to enhance the awareness of fire safety and the ability of self-prevention and self-rescue, as well as to strengthen the team spirit of employees and create a healthy, harmonious and united working atmosphere, Sanfeng New Materials organized a firefighting skills competition in the winter "Safety Production Month" at 9:30 a.m. on November 23, 2020 at the west side of the main road of the company's production complex. Competition activity.
At 10:16 a.m. on March 21, 2020, Sanfeng New Material 2#168 project started the groundbreaking ceremony. During the ceremony, Feng Shangti, Yuan Xiaogang, Li Xinmin, Tan Zhouli, leaders of the group company, as well as Guang'an company and the supervisor of the relevant site managers attended the groundbreaking ceremony.
In order to further enhance the awareness of production safety among employees, and at the same time strengthen the team spirit of employees, enhance the friendship among employees and create a harmonious and beautiful working environment, Shandong Sanfeng New Materials Co., Ltd. organized a competition of "Production Safety Month" in 2021 at 9:30 a.m. on June 21, 2021 on the west side of the main road of the production complex.