Usually tires are difficult to repair after puncture. However, current European scientists have discovered that adding carbon/nitrogen compounds to rubber tires can repair damaged polymer chains in rubber and that tires can repair themselves after a few hours of tire burst. At present, tires are manufactured using a vulcanization process, and tire durability is enhanced by adding sulfur or other compounds to the rubber to form cross-links in the rubber polymer chains. However, once the polymer chain is damaged, the tire will not be repaired. However, the scientists discovered in the experimental tests that the addition of carbon/nitrogen compounds in the rubber can repair the broken polymer chains, and the rubber can repair itself at room temperature.
After heating the rubber to 100°C in the first 10 minutes, the self-repairing process of the rubber can be accelerated. After 8 days, the repaired rubber piece can withstand a pressure of up to 754 psi (52 bar).
According to researchers, adding additives such as silica or carbon black can improve the self-healing properties of rubber.
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