Rubber is divided into natural rubber and synthetic rubber. Natural rubber is mainly derived from Hevea brasiliensis. When the cuticle of this rubber tree is cut, milky white juice will flow out, which is called latex. The latex is coagulated, washed, formed and dried to obtain natural rubber. Synthetic rubbers are made by synthetic methods. Different materials (monomers) can be used to synthesize different types of rubber. The
General purpose rubber refers to a kind of rubber used partially or completely instead of natural rubber, such as styrene butadiene rubber, butadiene rubber, isoprene rubber, etc., and is mainly used for manufacturing tires and general industrial rubber products. General rubber has a large demand and is the main product of synthetic rubber. The
SBR is made from the copolymerization of butadiene and styrene, and is the most common general-purpose synthetic rubber, including butadiene styrene rubber, solution styrene butadiene rubber and thermoplastic rubber (SBS). The
The butadiene rubber is obtained by solution polymerization of butadiene. The butadiene rubber has particularly excellent cold resistance, abrasion resistance and elasticity, and also has good aging resistance. The majority of butadiene rubber is used to produce tires, and a small part is used to make cold-resistant products, cushioning materials, tapes, and rubber shoes. The shortcomings of butadiene rubber are that the tear resistance performance is poor and the wet skid resistance is not good.
Isoprene rubber is an abbreviation for polyisoprene rubber and is produced by solution polymerization. Isoprene rubber, like natural rubber, has good elasticity and wear resistance, excellent heat resistance and good chemical stability. The raw rubber of isoprene rubber (before processing) has a significantly lower strength than natural rubber, but its quality uniformity and processing performance are superior to natural rubber. Isoprene rubber can be used instead of natural rubber to make heavy-duty tires and off-road tires. It can also be used to produce a variety of rubber products.
Ethylene-propylene rubber is synthesized with ethylene and propylene as its main raw materials, and its aging resistance, electrical insulation properties and ozone resistance are outstanding. Ethylene-propylene rubber can be filled with oil and filled with carbon black. The price of the product is low, and the ethylene-propylene rubber is chemically stable. The wear resistance, elasticity, oil resistance and styrene-butadiene rubber are close. Ethylene-propylene rubber has a wide range of uses. It can be used as tire sidewalls, rubber strips and inner tubes, as well as parts for automobiles. It can also be used for wire and cable sheathing and high-voltage, ultra-high-voltage insulation materials. Can also manufacture rubber shoes, hygiene products and other light-colored products.