NBR Rubber Products High Elasticity

The essential cause of high elasticity is related to the molecular structure inside the rubber. Vulcanized rubber was fine group, vulcanized after the fishing network. NBR Rubber Products Vulcanized rubber due to the different cross-linking methods, different hardness, different cross-linking density, different amounts of glue and other reasons, the appearance is not the same. Cross-linking density is high, the intermolecular bond will increase the strength of the molecular beam, then when the external force, the cross-linking bond will give a certain combination of molecular chain protection, because the molecular chain length is different, NBR Rubber Products then short will first Due to excessive force off off. Like a few lines of different lengths of the line is easy to break, but the number of lines in the middle of a few buckle, will be more uniform force, and more easily broken. Of course, cross-density is too high will change the nature of rubber macromolecules, but will be elastic decline.

1, high flexibility, the flexibility of the polymer chain is the root cause of high elasticity. Only in the room temperature is not easy to crystallize the flexible polymer, NBR Rubber Products it is possible to become a high elasticity of rubber

2, the molecular chain length, the longer the molecular chain, the more the number of segments, the more complex the molecular chain, the easier the thermal movement; the greater the molecular weight of the more physical nodes, chains and chains are not easy to slip between, The

4, mild cross-linking, excessive cross-linking will limit the molecular segment movement, thereby reducing the flexibility.

For example, natural rubber (NR) is mainly composed of rubber hydrocarbon (polyisoprene), containing a small amount of protein, water, resin acid, carbohydrate and inorganic salt. NBR Rubber Products High elasticity, high tensile strength, good tear resistance and electrical insulation, good abrasion resistance and drought resistance, good processability, easy adhesion to other materials, and superior to most synthetic rubber in comprehensive performance. Disadvantages are poor oxygen and ozone resistance, NBR Rubber Products easy aging deterioration; oil and solvent resistance is not good, the anti-acid corrosion resistance is low; heat resistance is not high. Use temperature range: about -60 ℃ ~ +80 ℃. Production of tires, rubber shoes, hoses, tape, wire and cable insulation and sheath and other general products. Particularly suitable for the manufacture of torsional vibration eliminator, engine shock absorbers, machine bearings, rubber - metal suspension components, diaphragm, molded products.

The butadiene rubber (BR) is a cis-structured rubber polymerized from butadiene. Advantages are: excellent flexibility and wear resistance, good aging resistance, excellent low temperature resistance, heat load in the dynamic load is small, easy to metal bonding. Disadvantages are low strength, poor tear resistance, NBR Rubber Products poor processing performance and self-adhesive. Operating temperature range: about -60 ℃ ~ +100 ℃. Generally more and natural rubber or styrene butadiene rubber and use, the main production tire tread, conveyor belt and special cold products.

Styrene butadiene rubber (SBR) copolymer of butadiene and styrene. Performance close to natural rubber, is currently the largest production of synthetic rubber, NBR Rubber Products which is characterized by wear resistance, aging resistance and heat resistance than natural rubber, texture is also more natural than natural rubber. Disadvantages are: low elasticity, resistance to flexion, NBR Rubber Products tear resistance is poor; poor processing performance, especially since the self-adhesive is poor, low strength rubber. Operating temperature range: about -50 ℃ ~ +100 ℃. Mainly used to replace natural rubber tires, plastic sheet, hose, rubber shoes and other general products.