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Ozone cracking in natural rubber tubing Cracks can be formed in many different elastomers by ozone attack, and the characteristic form of attack of vulnerable rubbers is known as ozone cracking . The problem was formerly very common, especially in tires , but is now rarely seen in those products owing to preventive measures.
Ozone cracking is a form of stress corrosion cracking where active chemical species attack products of a susceptible material. The rubber product must be under tension for crack growth to occur. Ozone cracking was once commonly seen in the sidewalls of tires , where it could expand to cause a dangerous blowout , but is now rare owing to the use ...
A vehicle tire showing signs of ozone cracking. An antiozonant, also known as anti-ozonant, is an organic compound that prevents or retards damage caused by ozone. The most important antiozonants are those which prevent degradation of elastomers like rubber. A number of research projects study the application of another type of antiozonants to ...
Ozone cracking in natural rubber tubing. Cracks can be formed in many different elastomers by ozone attack, another form of SCC in polymers. Tiny traces of the gas in the air will attack double bonds in rubber chains, with natural rubber, styrene-butadiene rubber, and nitrile butadiene rubber being most sensitive to degradation. Ozone cracks ...
Ozone cracking in natural rubber tubing. Ozone gas attacks any polymer possessing olefinic or double bonds within its chain structure, such as natural rubber, nitrile rubber, and styrene-butadiene rubber. Products made using these polymers are especially susceptible to attack, which causes cracks to grow longer and deeper with time, the rate of ...
Ozone cracking in Natural rubber tubing. Polymers for example, can be attacked by aggressive chemicals, and if under load, then cracks will grow by the mechanism of stress corrosion cracking. Perhaps the oldest known example is the ozone cracking of rubbers, where traces of ozone in the atmosphere attack double bonds in the chains of the materials.
A Path Out Of Trouble How one state supports its teenagers while a neighboring state punishes them. By Rebecca Klein and Kyle Spencer. Published Thursday, December 15, 2016 7:01 AM EST
Environmental scanning electron microscope image of ozone cracks in NBR diaphragm seal formed at sharp corners in seal. Diaphragm seals are susceptible to failure via several mechanisms, including cracking. Ozone cracking can occur in many elastomers for example used in pneumatic systems. If the gas contaminates the air supply, then many rubber ...