Raw rubber is the main material in the manufacture of rubber products. Rubber products are widely used. Different rubber products are used in different applications. The raw rubber used is also different. For example, natural rubber is often used in places that require high physical and mechanical properties, such as automobile tires, because of its good performance. However, since natural rubber has more double bonds (ie high degree of unsaturation), it is easy to interact with oxygen in the air (ie aging) to cause performance degradation and affect service life. It is often used in combination with styrene butadiene and butadiene rubber to improve performance. , Reduce costs; if rubber products need to work in an oil-resistant environment, natural rubber can swell in the oil and be damaged, so you can only switch to rubber with good oil resistance such as nitrile rubber; if it is used in the human body, it will affect the heart Valves, ventricular catheters, or plastic surgery materials can only use silicone rubber. Silicone rubber has the best compatibility in the human body and is not easy to produce biological rejection. For the manufacture of rubber dams, weather-resistant neoprene and nitrile are often used. Base or EPDM rubber.
As there are many types of rubber, there are dozens of types according to types, and hundreds of types according to grades. The general classification is divided into general rubber and special rubber; there are also classified into saturated rubber and highly unsaturated rubber; polar rubber and non-polar rubber.
General-purpose rubbers include: natural rubber, styrene butadiene rubber, butadiene rubber, butyl rubber, neoprene, nitrile rubber, chlorinated polyethylene, EPDM, etc.
Special rubbers include: silicone rubber, fluororubber, fluorosilicone rubber, fluoroether rubber, fluoronitrile rubber, polysulfide rubber, polyurethane, etc.
The basic properties of various rubbers can be described in detail in the rubber industry manual
Different types of rubber factories use different rubbers due to product needs, but generally they can be roughly classified
Tire factory: natural rubber, styrene butadiene rubber, butadiene rubber, as the main material of the tire casing, butyl rubber for the inner tube, chlorinated butyl rubber for the inner liner of the radial tire, as the diaphragm and bladder for the production tool Made of butyl rubber, the apex in bias tires generally uses more reclaimed rubber.
Hose and tape factory: natural rubber, styrene butadiene rubber, butadiene rubber, neoprene rubber, nitrile rubber, reclaimed rubber, chlorosulfonated polyethylene, polyvinyl chloride and other polymer materials and some latexes.
Rubber Molded Products Factory: All kinds of rubber are used.
Due to the different types of rubber, its performance indicators, packaging, initial viscosity, processing performance, etc. are different;
Even if the same kind of rubber has different processing techniques, their properties are also different; for example, styrene-butadiene rubber has emulsion polystyrene-butadiene rubber and solution-polymerized styrene-butadiene rubber. Among them, emulsion polystyrene-butadiene rubber has high-temperature styrene-butadiene (1000 series), Low-temperature styrene-butadiene (1500 series), low-temperature styrene-butadiene carbon black masterbatch (1600 series), low-temperature oil-extended styrene-butadiene rubber (1700 series), low-temperature oil-extended styrene-butadiene carbon black masterbatch (1800 series), high styrene SBR, liquid styrene-butadiene rubber, carboxyl-based styrene-butadiene rubber and other series of varieties have their own focus on performance differences and uses.