Performance Dimension Natural Rubber (NR) Synthetic Rubber
Main Components Conjugated Polyisoprene (cis-1,4), content 91%-94% Chemical synthetic polymer from petroleum/gasoline as raw materials
Elasticity High elasticity, excellent elasticity at room temperature Relatively poor elasticity, but can be adjusted by additives
Wear Resistance Average Some varieties (such as styrene-butadiene rubber) have 30%-50% higher wear resistance than natural rubber
Temperature Resistance Range -50℃ to 80℃ (maximum temperature resistance about 80-100℃) Various types, silicone rubber can reach 200-300℃, fluorine rubber has excellent high-temperature performance
Oil Resistance Not resistant to oil Special varieties such as nitrile rubber have excellent oil resistance
Aging Resistance Average Some varieties (such as EPDM, butyl rubber) have better aging resistance
Alkali Resistance Strong Generally
Acid Resistance Not resistant to concentrated strong acids Some varieties have better acid resistance
Air Tightness Average Butyl rubber has excellent air tightness
Mechanical Properties Best overall mechanical properties, most balanced Some special properties are outstanding, but the comprehensive mechanical properties are not as comprehensive as natural rubber
Processing Performance Best processing performance Some varieties (such as fluorine rubber) have poorer processing performance
Cost Affected by growth environment, high cost Can be scaled up for production, relatively low cost
Environmental Friendliness Renewable resource, less environmental impact Dependent on fossil fuels, has a greater impact on the production environment