BunaN

BunaN is a synthetic rubber, also known as acrylonitrile-butadiene rubber. It is a copolymer produced by the polymerization of acrylonitrile and butadiene monomers. The ratio of these monomers can be varied to produce BunaN with a wide range of properties. Higher acrylonitrile content generally leads to increased resistance to oil, fuels, and many chemicals, as well as improved tensile strength and abrasion resistance. However, it can also reduce flexibility at low temperatures. Conversely, lower acrylonitrile content enhances low-temperature flexibility but diminishes oil and fuel resistance.

BunaN is characterized by its excellent resistance to petroleum-based oils, greases, and fuels, which makes it a suitable material for applications involving contact with these substances. It also exhibits good resistance to water, air, and ozone. However, it is susceptible to degradation from strong acids, ketones, esters, and chlorinated hydrocarbons. Its mechanical properties include good tensile strength and tear resistance.

The primary applications for BunaN include seals, gaskets, hoses, O-rings, and diaphragms used in the automotive, aerospace, and oil and gas industries. It is also found in footwear, gloves, and adhesives where oil and solvent resistance are required. BunaN is typically processed using standard rubber compounding and manufacturing techniques, such as mixing, calendering, extrusion, and molding. Its versatility and cost-effectiveness have made it a widely used elastomer for a variety of industrial and consumer products.