What is the service life of Under Ballast Mat?

Key performance parameters for under-ballast-mat:

Mechanical Properties:** - Tensile Strength: The material's resistance to tensile fracture; the core indicator of rubber material strength - Elongation at Break: Characterizes deformation capacity; higher elongation indicates better flexibility - Modulus (Stress at Specified Elongation): Stress value at specified elongation (e.g., 100%, 300%), reflecting material stiffness and crosslink density - Tear Strength: Resistance to tear propagation; particularly important for products with notches or cuts - Hardness (Shore A): Indicates softness/hardness; a key parameter for sealing and vibration damping applications

Aging Resistance:** - Hot Air Aging: Percentage change in tensile strength and elongation after exposure at specified temperature and duration - Ozone Resistance: Crack resistance under ozone exposure - UV Aging Resistance: Long-term property stability under light exposure

Media Resistance:** - Oil Resistance: Volume change and property retention after immersion in oil-based media - Chemical Resistance: Stability in acids, alkalis, solvents, and other chemical media

Low-Temperature Performance:** - Brittleness Temperature: Critical temperature at which material loses elasticity and becomes brittle at low temperatures - TR10 Retraction Temperature: Temperature corresponding to 10% low-temperature retraction, reflecting low-temperature elasticity retention

Compression Set:** - Critical indicator for sealing applications; lower values indicate better sealing durability - Test conditions are typically: specified temperature × specified time × specified compression ratio

Dynamic Properties:** - Resilience: Reflects energy recovery capability - Heat Build-up: Degree of heat generation under repeated deformation - Fatigue Life: Durability under cyclic loading

All performance indicators should be tested and evaluated according to applicable international standards (ISO, ASTM, GB, etc.).