(Butyl Rubber) is the polymerization of isobutylene and […]
(Butyl Rubber) is the polymerization of isobutylene and a small amount of isoprene. Because the movement of the steric barrier molecules of the methyl group is less than that of other polymers, it has less gas permeability and is highly resistant to heat, sunlight and ozone. Good electrical insulation; high resistance to polar solvents, and the general use temperature range is -54-110 ℃. Advantages: impermeable to most general gases, good resistance to sunlight and odors, and can be exposed to Animal or vegetable oils or gasifiable chemicals. Disadvantages: It is not recommended to use petroleum solvents, kerosene and aromatic hydrogen at the same time. Used for inner tubes, leather bags, rubber paste paper, window frame rubber, steam hoses, heat-resistant conveyor belts, etc. of automobile tires.
Hydrogenated Butadiene Rubber HNBR (Hydrogenate Nitrile) Hydrogenated nitrile rubber is hydrogenated to remove part of the double strands in the nitrile rubber. After hydrogenation, its temperature resistance and weather resistance are much higher than that of ordinary nitrile rubber, and its oil resistance is similar to that of ordinary nitrile rubber. The general use temperature range is -25~150 ℃. Advantages: better abrasion resistance than nitrile rubber, with excellent corrosion resistance, tensile resistance, tear resistance and compression properties It has good resistance in atmospheric conditions such as ozone, and is generally suitable for washing or dishwashing detergents. Disadvantages: It is not recommended to be used in alcohols, esters or aromatic solutions in the air conditioning and refrigeration industry. It is widely used as a seal in the environmentally friendly refrigerant R134a system.