Cryo-milled tire tread (CMTT), developed jointly by the USTMA and the World Business Council for Sustainable Development's Tire Industry Project, now is available free of charge for researchers, governments and academic institutions to study the 6ppd/6ppd-quinone conundrum.
CMTT is not a direct replacement for the study of TRWP, rather it allows researchers to isolate and focus on the tire tread component. The CMTT methodology developed by the Tire Industry Project essentially eliminates the infinite variables presented by the natural environment.
The CMTT uses treads from passenger, light truck and bus tires, all from North American manufacturers.
USTMA members are funding production of the material, Amick said.
"So far, we have received and fulfilled roughly 40 requests," Amick said.
More information is available at ustires.org/cmtt.
"As we have shared," Amick said, "6ppd serves a critical purpose in a tire—to help tires resist degradation and cracking—which is vital for driver and passenger safety.
"One thing that is often overlooked but important to understand is the amount of engineering and chemistry that goes into manufacturing tires. It is not an easy task to change a material in a tire because all the materials in a tire must function together in order to meet critical performance and safety requirements."