This study focuses on rubber products' performance degradation mechanism and optimization strategy in low-temperature environments. Aiming at the key failure problems such as low-temperature embrittlement and dynamic property attenuation

a three-level testing technology system is established by multi-scale mechanism analysis. Based on the failure mechanism

the material optimization path was proposed: the low-temperature toughness was improved by the design of molecular chain flexibility

the directional reinforcement system of nanofillers was constructed to inhibit the propagation of microcracks

the curing process was optimized to control the uniformity of cross-linked network

it is expected to provide theoretical basis and technical support for the reliability improvement of rubber product in extreme environment

and promote the design and standardization process of low-temperature adaptive materials.