Key Factors Affecting Silicone Wear Resistance

Key Factors Affecting Silicone Wear Resistance
Hardness
Silicone hardness (Shore A) is a key factor influencing wear resistance:
Low-hardness silicone (30-50 Shore A) is soft and elastic, but has poor wear resistance and is prone to surface scratching or denting after friction.
High-hardness silicone (60-80 Shore A) has a denser structure, greater resistance to deformation, and significantly improved wear resistance, but with a slight decrease in elasticity.
Fillers and Modifications
Wear resistance can be improved by adding fillers:
Adding hard particles such as quartz sand, glass beads, and carbon fiber can enhance surface friction resistance.
Blending with other materials (such as polyurethane and fluororubber) can create "reinforced silicone," combining the heat resistance of silicone with the wear resistance of rubber.
Surface Treatment
Coating the silicone surface (such as spraying polytetrafluoroethylene (PTFE) or ceramic coating) can reduce the surface friction coefficient and minimize wear.
Usage Environment
Temperature: At high temperatures, silicone softens, reducing wear resistance; at low temperatures, it hardens, becomes brittle, and is susceptible to wear. Medium: In oils and solvents, silicone may swell, resulting in reduced structural strength and decreased wear resistance; in dry environments, static electricity or dust generated by friction may aggravate wear.