1、 physical and chemical properties

Butyl rubber, referred to as IIR, is the abbreviation of Isobutylene Isoprene Rubber. Butyl rubber is a copolymer of isobutylene with a small amount of rubber matrix. Because of its structural characteristics, its air permeability in the hydrocarbon rubber is the lowest, at 40 ℃, butyl rubber gas permeability coefficient of about 1/120 of natural rubber, styrene butadiene rubber 1/8. Butyl rubber has good weather resistance, ozone resistance, and ozone cracking crack growth rate is slow. Similar to EPDM materials, it has excellent resistance to chemical and polar fluxes and has good insulation resistance to ozone. Butadiene rubber is unique in its very low gas permeability and high impact absorption capacity. Butyl rubber self-adhesive and poor cohesion, and other rubber and the use of poor compatibility. Compared with other rubber, curing speed is slow.

2、the temperature range

-55 ° C to 100 ° C

3、hardness range

Shore A50 degrees to 70 degrees

4、color

Black, can also be specified by the customer color

5、 application

Butyl rubber vulcanizate has a low permeability and high shock absorption, heat, ozone and chemicals have good corrosion resistance. With the wide application of polymer damping materials in the military field and civilian products, the high damping of butyl rubber is paid more and more attention. Production of various tires, inner tubes, innerliner tires, various gaskets, lining of corrosive liquid containers in the chemical industry, pipes and conveyor belts, and agricultural use as waterproofing materials.