The Advantages and Disadvantages of Different Rubber
Natural Rubber (NR)
Advantages: Natural rubber (polyisoprene, NR) has excellent wear resistance, tensile strength and elasticity. It has good adhesion to fabrics and metals and has good low temperature flexibility. Natural rubber is generally resistant to moderate chemicals, alcohols, ketones and aldehydes.
Disadvantages: Natural rubber (polyisoprene, NR) is not suitable for applications involving outdoor exposure (ozone, thermal aging and antioxidant properties). Natural rubber is very resistant to corrosive chemicals, petroleum derivatives, fats and non-polar solvents.
Epdm Rubber
Advantages: EPDM elastomers (ethylene allylene diene monomers) can be used to resist ozone, oxygen, and thermal degradation and are often recommended for outdoor applications. It can show good resistance to water, steam, alkali, acid and oxygen-containing solvents. Epdm rubber has good low temperature flexibility and can be vulcanized with sulfur and peroxide.
Disadvantages: EPDM (ethylene allylene diene monomer) is not recommended for applications requiring oil, gasoline, and hydrocarbons resistance. Epdm rubber compression deformation performance is not good, with fabric and metal adhesion is not good.
Fluororubber (FKM)
Advantages: Fluororubber (FKM) is a special elastomer that resists extreme heat, oil, gasoline, hydraulic oil and hydrocarbon solvents. It has good resistance to oxygen, ozone and sunlight, and has good impermeability to gas and steam.
Disadvantages: Fluorine rubber is generally not resistant to oxygen-containing solvents, and the performance of tear resistance is relatively poor. The low temperature resistance is not good, generally only to about -25 degrees, the price is expensive.
Nitrile butadiene rubber (NBR)
Advantages: For products that require oil resistance, nitrile (butadiene acrylonitrile, BUNAN, NBR) is the polymer of choice. It has excellent resistance to petroleum, gasoline, petroleum-based hydraulic fluids and hydrocarbon solvents. In addition, it provides good resistance to alkalis and acids. Nitrile rubber can be adapted to a wide temperature range.
Disadvantages: NBR (butadiene acrylonitrile, BUNAN, NBR) is not recommended for applications where it is exposed to ozone, weathering, heat, and sunlight. It is less resistant to polar solvents such as esters, ketones, chlorinated solvents or nitrocarbons.
