Rubber sealing ring is a kind of good elastic sealing product. The smaller stress in different media will produce larger deformation, which can provide contact pressure, compensate leakage gap and achieve the purpose of sealing.
Rubber seals often appear aging failure in the process of use. In addition to the changing conditions in the process of operation, it is necessary to enhance the anti-aging performance in the production design of rubber seals. The aging phenomena of rubber sealing ring, such as cracking, hardening, sticking, pulverizing and tear strength decreasing, are called fatigue aging. Not only rubber sealing ring, but also many rubber products in actual use appear fatigue aging, such as mobile phone accessories, shockproof rubber products and so on.
Therefore, in the design of rubber sealing ring with excellent fatigue aging resistance, the formula and processing technology should be designed from the type of rubber compound, crosslinking agent and curing system, filler, antioxidant type, processing technology, etc. The design of anti-aging additive system for rubber sealing ring is an effective way to improve the fatigue life of rubber. Its main function is the stability of structural change in the fatigue process of rubber sealing ring. Especially at higher temperature, the anti-aging additive can effectively prevent the mechanical activation and oxidation reaction.
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