A Review of the Principles and Performance of Rubber Reversible Curing Systems with a Tire Application Perspective

Preventing the challenges of rubber recycling requires the development of reversible curing methods, which on the one hand include favorable mechanical properties in the rubber compound, and on the other hand, enable the reuse of rubber parts. These methods include the use of thermoplastic elastomers, covalent reversible curing, and non-covalent reversible curing. The complete or partial replacement of irreversible crosslinking systems with this type of reversible junction is a new perspective and a preventive approach to solving the tire recycling challenge. The use of reversible covalent bonds such as Diels-Alder seems to be important for engineering applications. Due to the slow kinetics of Diels-Alder reverse reactions at the tire operating temperatures of Tire (the maximum temperature of which can be 80 °C), it is predicted that Diels-Alder chemistry can be a promising successful system. Vit rimer chemistry is another successful method in creating cure reversibility for rubber. Implementing this method with its great diversity in the chemical agents used is also possible. The use of physical bonds and supramolecular in teractions has attracted a lot of research, but the mechanical properties obtained in this method are usually weaker than other reversible chemical methods. It has been reported that thermoplastic elastomers based on styrene block copolymers are efficient for tire applications. The important question is the ability to use this new type of polymer matrix in tire application and how it affects the engineering properties of the tire tread. The results have shown that thermoplastic elastomers, as the most effective candidate for solving the rubber recycling challenge have had an .additional important effect on reducing rolling resistance and other properties of the magic triangle of tires.