What is the sole of a shoe? The sole of each shoe has a great impact on the quality and comfort of that shoe, so to buy a good shoe, you must be familiar with the characteristics and use of different types of shoe soles. In this article, we will get acquainted with the types of shoe soles and their […]
What are the ingredients of tyre and why does it rot? In the construction of rubber, various chemical, natural and mineral ores are used, each of which plays a special role in the performance of the tire as well as in its production. In the construction of rubber, various chemical, natural and mineral materials are used, each of which plays […]
11% drop in the price of synthetic rubber Following the drop in butadiene prices in recent weeks, as well as the decline in demand for synthetic rubber in the Chinese market, the price of this product in Asian markets experienced a sharp decline. Excess supply in the synthetic rubber market has already severely affected the industry. Butadiene prices hit a […]
Styrene butadiene rubber Polybutadiene was one of the first elastomers or tires you had, which is 0% of butadiene production, used to make tires and tires, and 25% to 30% of it is added as an additive to other items than mechanical mechanics. They have to improve. The annual production of this polymer in 2001 is more than 2.1 million […]
In this method, polymerization is done through free radicals, which is done in both hot and cold states. The product obtained by cold method in the presence of oil or in the presence of oil-soot has high linearity, narrow molecular distribution, high molecular weight and difficult processing. (Series 1500 (Type 1500)). The product obtained by hot method is also highly […]
Differences in the production of synthetic rubber and natural rubber Synthetic rubbers are obtained by polymerizing various petrochemicals known as monomers. Some examples are: Sterin butadiene rubber (SBR) obtained by cross-polymerization of strain and butadiene, Butyl rubber (IIR) which is a synthetic rubber obtained by polymerization of isobutylene with isoprene, NB nitrile rubber Which is an oil-resistant synthetic rubber obtained […]
Special space rubber polyisoprene and polybutadiene The discovery that the Ziegler-Nata (Lithium alkyl) catalyst catalyzes the polymerization of isoprene or butadiene in such a way that the cis structure is mainly obtained made it possible to simulate natural rubber by synthesis. Polyisoprene (IR) rubber, which is quite similar to natural rubber, is even superior in some respects such as better […]
Styrene butadiene rubber emulsion method In this method for styrene butadiene rubber , polymerization is done through free radicals, which is done in both hot and cold states. Styrene butadiene rubber obtained by cold method in the presence of oil or in the presence of oil-soot has high linearity, narrow molecular distribution, high molecular mass and difficult processing. Styrene butadiene […]
Synthetic rubber Styrene butadiene rubber While most of the properties of SBR are comparable with NR, but in some respects like heat build-up, tack and gum tensile strength make it inferior to natural rubber. Other disadvantages include: Low elongation at break Low hot tear strength Hysteresis, resilience . But the addition of resins and reinforcing fillers adequately improve these properties. […]