During the long-term storage and use of rubber and its products, due to the effects of heat, oxygen, ozone, metal ions with variable valence, mechanical stress, light, high-energy rays, as well as other chemical substances and molds, it gradually reduces and loses its original properties. The process of physical and mechanical properties is called aging. Antioxidant 3100 manufacturer - Henan Xuannuo Chemicals said that because each anti-aging agent has a limited protective effect, and the aging of rubber products in actual use is the result of many factors, when choosing an anti-aging agent, it should be Note the following:

(1) Some antioxidants have coloring effects and pollution on the rubber. Generally speaking, phenolic antioxidants have poor protective effect, but do not pollute or pollute very little. The amine antioxidants with higher protective effect will contaminate the rubber and cause severe discoloration. These contradictions should be considered in the selection process.

(2) When one antioxidant is difficult to meet the requirements, two or more antioxidants should be used together to make it have a harmonious effect and ensure the antioxidant effect.

(3) Because each antioxidant has different characteristics, and the aging function of different rubber formulations is different. Therefore, an antioxidant that is effective for a certain rubber may be ineffective or even harmful to another rubber. Therefore, the selection of antioxidants must be considered and reasonably selected according to the aging function of various rubber materials, anti-aging requirements and the characteristics of various antioxidants.

(4) Amine antioxidants have adverse effects on rubber scorch; phenolic antioxidants can delay vulcanization, and should be paid attention to when selecting them.

⑸ The amount of antioxidant should not exceed the solubility in rubber to avoid frost spray and contaminate the surface quality of rubber.