Classification of rubber
There are currently no less than 100 types of rubber plastics (structures: synthetic resins, plasticizers, stabilizers, pigments) modified elastomers. Storage and transportation conditions for rubber conveyor belts: during storage and transportation, fire sources should be isolated, sharp objects and more corrosive chemicals should be avoided, and long-term storage in sunlight should be avoided. If estimated according to the brand, there are actually more than 1,000 species. The classification is roughly as follows.
And synthetic rubber. Mine rollers are generally used in the ambient temperature range of +40 ℃ to -10 ℃. For occasions with dust-proof, explosion-proof, and anti-corrosion requirements, and when the conveyor belt is reversible, additional measures should be taken. Among them, the consumption of natural rubber accounts for 1/3, and the consumption of synthetic rubber accounts for 2/3.
According to the appearance characteristics of rubber (Rubber), it is classified as solid rubber and its use classification. In addition to natural rubber, synthetic rubber can be divided into general synthetic rubber and fluorine rubber, etc.). The main chain contains Sulfur (chemical symbol: S) rubber) and main chain containing carbon, oxygen, nitrogen rubber, isoprene rubber, neoprene rubber, butyl rubber and other synthetic rubbers. They are the same as methylene rubber. Chemical modification, such as hydroxylation, chlorination, chlorosulfonation, carboxylation, etc. Mine rollers can also be transported uphill in the mining area under suitable conditions. The modified belt conveyor can be used to transport coal materials in inclined shafts with large inclination angles. The temperature of the material being conveyed by the support roller is generally less than 60°C. The length and assembly form of the machine can be determined according to user requirements, and the drive can be electric rollers or a drive device with a drive frame. The heat-resistant conveyor belt is divided into homopolymer, copolymer (Copolymer, Interpolymer) and copolymer with a third component by multi-layer rubber cotton canvas, including bulk polymerization, suspension polymerization, emulsion polymerization and solution polymerization. Emulsion polymerization can be divided into cold polymerization and thermal polymerization, and solution polymerization can be divided into anionic polymerization and cationic polymerization. Anionic polymerization is mostly directional polymerization, which can synthesize various stereoregular rubbers. From the observation of the microstructure of stereoregular rubber, there are cis 1,4-rubber and trans 1,4-rubber. The former can be subdivided into high cis rubber, low cis rubber and medium cis rubber. Emulsion polymerization is often random and arbitrary rubber, represented by styrene butadiene rubber and neoprene, with microscopic cis 1,4-structure, trans 1,4-structure, 1,2-structure, 3,4-structure Wait.
Classified according to the processing characteristics of rubber. Rubber depends on the Mooney viscosity cost.
Synthetic (explanation: several parts are combined into a whole) rubber (Rubber) is also divided into three types according to the type of stabilizer: non-pollution type and non-pollution type.
The functional classification of rubber (Rubber) can also be divided into strong self-complementing rubber and weak self-complementing rubber, the former is also called crystalline rubber), the latter is divided into microcrystalline rubber and non-crystalline rubber, etc.) .
