General specifications of SBR
Styrene butadiene rubber has general specifications as follows:
This material has the chemical formula (C4-H6) (C8H8) X with the brand name SBR. SBR is the product of styrene and butadiene monomer (Styrene & Butadiene) and dimethyl formaldehyde solvent DMF and its density is different according to its styrene. It is about 0.92 to 0.95 grams per cubic centimeter.
This polymeric material, which has a non-polar state, does not melt in the curing state. SBR is such that it burns in the flame and after burning it continues to burn. The flame color of this polymer material is yellow to orange and is slightly noisy when burning. The smoke of this white material is grayish and contains carbon particles. Styrene Butadiene Rubber smells like CNG and does not drip on Flame is one of its features.
It should be noted that when up to 50% of butadiene and styrene copolymer are butadiene, it is called SBR. Typically, 70 to 75% of the composition of monomers, is butadiene and 25 to 30% of it is styrene. Now, for whatever reason, the styrene ratio reaches more than 50%, the formed product will be strongly plastic, which is used in the production of leachate paints, or in other words, latex.
The largest consumer industry of styrene butadiene rubber
This type of polymer is known as a common polymer that has a high performance. Due to the cheap raw materials produced, this polymer material, which is also found in abundance, has made it the most widely used and widely used rubber throughout In fact, this polymeric material has the highest volume of production related to the rubber industry.
Consumption of 70% of Styrene Butadiene Rubber produced in the tire industry is related to tire tread, 10% latex or leachate and 15% to mechanical parts. In fact, SBR, which was developed in Germany before World War II, but at the time World War II was widely used in Germany and the United States as a substitute for natural rubber, due to the monopoly of natural rubber by East Asia or Japan at the time.
Styrene butadiene rubber has lower mechanical properties than NR and does not crystallize due to traction like NR. Therefore, it is weaker than natural rubber, even if reinforced with soot or other materials.
Uses and applications of Styrene Butadiene Rubber include making tires, shoes, rubber parts, sealants, adhesives, super-foam and foam products, pipes, BR-SBR conveyors, NR-SBR alloy gaskets. Styrene Butadiene Rubber as TPE thermoplastics Thermoplastic Elastomer, Rubber, Elastomer and Tire are used.
What are the advantages and disadvantages of SBR?
Styrene butadiene rubber has its own dangers. In fact, Styrene Butadiene Rubber dust causes mild irritation or discomfort and irritation in the eyes, and it also causes skin discomfort. There is no risk of explosion. If the powder of this substance is swallowed in large quantities, it will cause coughing, nausea and shock.
Styrene butadiene rubber has the following advantages:
- water resistance
- resistance to abrasion and erosion
- resistance to flexural cracking
- flexible at low temperatures
- durability and tensile strength and good elasticity
- resistance to acid and alcohol
- resistance to oxidation
- heat resistance
- impact resistance
- resistance to weathering
- resistance to sunlight
This polymeric material has disadvantages, some of which are mentioned below:
- This polymeric material has low resistance to hydrocarbon solvents.
- Styrene butadiene rubber has low resistance to oil, gasoline, other hydrocarbon liquids and ozone.
To take care of and prevent the possible dangers of this article, the following items must be observed:
- Avoid contact between this substance and the skin
- Use of chemical masks and safety goggles when Styrene Butadiene Rubber evaporates
- Delivery of this material to the customer in suitable cube-shaped boxes, mainly in packages of 1050 and 1260 kg. Because this material is solid and does not have the ability to flow.
What is the difference between styrene butadiene rubber and natural rubber?
SBR and natural rubber are generally similar. However, some properties of Styrene Butadiene Rubber have made natural rubber perform better than it. Some of these properties include the lower resistance of this polymeric material to tensile, heat accumulation and waste generation.
Of course, by adding reinforcing filters and resins, these properties can be improved. It should be noted that the existence of some properties also makes this material superior to natural rubber. These features include the following:
- This polymeric material can be processed more than natural rubber.
- Styrene butadiene rubber erosion is less against heat.
- This material is less likely to burn than natural rubber.
In general, the presence of the following properties makes Styrene Butadiene Rubber superior to other similar materials.
- High access to these materials
- Lower cost of this polymeric material than other composite rubbers
- Ability to add filler to it to a large extent
- Relatively more stable price compared to natural rubber
- Higher utility in general in terms of performance and cost
How to transport and store SBR
As mentioned before, SBR rubber has hazards, and therefore in the maintenance and storage of this material, the points that are expressed should be considered. Storage of this polymeric material should be in a well-ventilated environment. It is a source of ignition, heat, sunlight, oxidants and oil.
In fact, due to the significant percentage of combustible and flammable oil in the oily type of this polymeric material, it should be removed from all flammable materials. Also, it should be considered the storage location of this polymeric material, it should be away from static electrical environments.
SBRs are often traded in one-ton packages and boxes. SBRs are usually solid and delivered in packages to the customer to avoid potential risks. Important Note is, Iran exports the amount of SBR to other countries. It is also important to note that the price of this type of composite rubber is cheaper than other types.
Manufacturer of SBR in the Middle East
Middle East Chemical Industry Companies has the ability to supply all types of Styrene Butadiene Rubber SBR for all safe ports of the world ASWP. The minimum required tonnage must be more than 1000 tons.
The company has an extensive sales network of petrochemical and refinery products throughout Asia, Europe and Africa, as well as engineers and experts in branches of oil, gas and petrochemicals as one of the strongest companies in this Is the domain.