Block (SBR)
Description
SBR is derived from two monomers, styrene and butadiene. The mixture of these two monomers is polymerized by two processes: from solution (S-SBR) or as an emulsion (E-SBR).
Chemical Properties
| Name | Value |
|---|---|
| IUPAC Name | Styrene-Butadiene Copolymer |
| OtherNames | BuNa-S |
| Abbreviations | SBR |
| CASNo | 9003-55-8 |
| Formula | (C41H44) x n |
| Molar Mass (grams) | (536.74) x n |
| Appearance | Rubber |
| Density | |
| Melting Point | |
| Boiling Point |
History
Styrene Butadiene Rubber was created during World Wars I and II. It was originally called BuNa, as an abbreviation of Butadiene, on of the monomers, and Sodium, a catalyst. Soon after BuNa was discovered, scientists discovered a new polymer made out of Butadiene and Styrene. This was called BuNa-S. This polymer was discovered by the Germans and improved upon by the Americans. It was soon renamed to SBR, and is now one of the most important synthetic rubbers, finding applications in a majority of industries around the world.
Synthesis
Styrene Butadiene Rubber is a polymer made of two monomers, namely Styrene and Butadiene. Styrene, or ethenylbenzene, is an organic compound used in a variety of synthesis. It is commercially formed from ethylbenzene hydroperoxide, toluene, or benzene. Butadiene, or 1,3-Butadiene, is an organic monomer used in the synthesis of rubbers. It is commercially formed from dehydrogenation of n-Butane, or from ethanol.
Styrene Butadiene Rubber can be formed from Styrene and Butadiene from both ionization and free radical polymerization. Ionizzation polymerization is called 'Solution polymerization' and free radical polymerization is called 'Emulsion polymerization'.
Uses
SBR is a abrasion resistant replacement for natural rubber, having very similar properties. One of it's major uses is in the manufacturing of automobile and truck tires. It is sometimes produced in latex form to be used as a rubbery adhesive. Some other uses include belts, floors, wire and cable insulation, and footwear. Additionally, it is also sometimes used as an alternative to PVA (PolyVinyl Acetate).
Polycraft
Properties
| Name | Value |
|---|---|
| Bounce Height | 12 |
| Release Version | 1.0.0 |
Recipes
Crafting Table
| Outputs | Components | Recipe |
|---|---|---|
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Shapeless
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6 | ||
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 6 |
Furnace
| Outputs | Components | Recipe |
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Industrial Oven
| Outputs | Components | Recipe |
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History
Gallery
