Here are 10 commonly used rubbers in industry and their characteristics

Here are 10 commonly used rubbers in industry and their characteristics:
Natural rubber (NR): mainly derived from rubber trees and other plants, it has the characteristics of high elasticity, high tensile strength, and excellent wear resistance. It is widely used in the manufacture of tires, rubber shoes, hoses, tapes, and other products. However, its heat resistance, heat and oxygen aging resistance, ozone resistance, oil resistance, and solvent resistance are poor, which can cause flame retardancy and have limited sources.
Styrene butadiene rubber (SBR): It is a copolymer of butadiene and styrene, and the most widely produced synthetic rubber. Wear resistance, aging resistance, and heat resistance are all superior to natural rubber, with a uniform texture. But the elasticity is low, the resistance to bending and tearing is poor, and the processing performance needs to be improved. Often used in a certain ratio with natural rubber.
Butadiene rubber (BR): polymerized from butadiene, it has excellent elasticity and wear resistance, good aging resistance, and excellent low-temperature resistance. But the strength is low, the tear resistance is poor, and the processing performance and self adhesiveness are poor. Often used in combination with natural rubber or styrene butadiene rubber to manufacture tire treads, conveyor belts, and special cold resistant products.
Neoprene rubber (CR): It is polymerized from chloroprene monomer lotion, and has excellent oxygen resistance, ozone resistance, oil resistance, solvent resistance, acid and alkali resistance, and aging resistance. The physical and mechanical properties are better than natural rubber, and it is suitable for manufacturing sealing products such as wires and cables, rubber hoses, and tapes.
Butyl rubber (IIR): It is a copolymer of isobutene and a small amount of isoprene or butadiene, known for its excellent airtightness, ozone resistance, aging resistance, and heat resistance. Can work for a long time below 130 ℃, resistant to strong inorganic acids and general organic solvents. Mainly used in the production of inner tubes, water tires, balloons, insulation layers for wires and cables, and other products. But it has poor elasticity, poor processing performance, and slow vulcanization speed.
Nitrile rubber (NBR): It is a copolymer of butadiene and acrylonitrile, with excellent resistance to gasoline and aliphatic oils, second only to polysulfide rubber, acrylic ester, and fluororubber. It has good heat resistance, air tightness, wear resistance, and water resistance, and strong adhesion. But it has poor cold and ozone resistance, low strength and elasticity, poor acid resistance, and poor electrical insulation. Mainly used for manufacturing various oil resistant products, such as rubber hoses, sealing products, etc.
Silicone rubber (Q): It is a special rubber with a main chain containing silicon and oxygen atoms, which has excellent properties of high temperature resistance (up to 300 ℃) and low temperature resistance (down to -100 ℃). It is currently the best high temperature and low temperature resistant rubber. It has excellent electrical insulation and high chemical inertness, and is widely used in the production of high and low temperature resistant products, as well as insulation layers for high temperature resistant wires and cables.
Polyurethane rubber (AU/EU): polymerized from polyester (or polyether) and diisocyanate compounds, with the best wear resistance among all rubbers, high strength, good elasticity, and excellent oil resistance.
Ethylene propylene rubber (EPR): a copolymer of ethylene and propylene, with excellent electrical insulation performance, good heat resistance, excellent ozone resistance, good weather resistance, good cold resistance, and good chemical corrosion resistance.