Crosslinked Rubber Composition Balancing Softness and Resilience

The patent changes the chemical parameters of the crosslinking system by selecting specific accelerators (2-mercaptobenzothiazole or its salts) in combination with specific crosslinking agents. This parameter change in the chemical composition enables the rubber composition to achieve both high resilience and good softness simultaneously, resolving the contradiction between these two properties.

The patent creates a composite crosslinking system by combining a crosslinking agent (such as zinc acrylate, zinc itaconate, or zinc maleate) with a specific accelerator (2-mercaptobenzothiazole or its salt). This composite approach allows the system to achieve both high crosslinking density for resilience and appropriate softness, as demonstrated in the embodiments where specific combinations yield both properties.

The patent optimizes the chemical parameters of the crosslinking reaction by using specific accelerators and crosslinking agents. This enables achieving high crosslinking density (improving coefficient of restitution) while controlling the type of crosslinks formed to maintain appropriate compression deformation characteristics, thus resolving the contradiction between these two parameters.

The patent creates different local crosslinking characteristics within the rubber matrix by using a dual crosslinking system. The specific combination of crosslinking agent and accelerator produces a heterogeneous crosslinking structure that provides both high resilience (through dense crosslinking in certain regions) and appropriate softness (through controlled crosslinking density in other regions), as evidenced by the balanced performance in the embodiments.