Rubber antioxidant Notes

Since the protective effect of each antioxidant has limitations, and rubber products in actual use, aging is the result of many factors affected by, so when choosing antioxidant in Note the following:

(1) Due to the different characteristics of each antioxidant, and different aging properties of different rubber formulations. Therefore, the most effective material for a rubber antioxidant, rubber material may be ineffective or even harmful to another. Therefore, the choice must give overall consideration to the antioxidant properties of aging based on the performance of various rubber materials, aging requirements and various antioxidants, and a reasonable choice.

(2) When an antioxidant is difficult to meet the requirements, you should use two or more antioxidant used to produce a coordinating role, to ensure anti-aging effects.

(3) Some of rubber antioxidant coloring effect and contamination. In general, the phenolic antioxidant protective effect is poor, but not pollution or contamination is small. The protective effect of a high amine antioxidant, will cause the rubber contamination, discoloration serious. These contradictions should be selected in overall consideration.

(4) the amount must not exceed the solubility of the antioxidant in rubber to prevent blooming, pollution rubber surface quality.

(5) amine antioxidant for rubber scorch adversely affected; phenolic antioxidant can delay the cure, in the selection should be noted.