Buna S

Buna S

Buna S or Styrene-butadiene rubber (SBR) is an elastomeric copolymer consisting of styrene and butadiene. It has good abrasion resistance and good aging stability. SBR is stable in: mineral oils, fats, aliphatic, aromatic and chlorinated hydrocarbons. The production process is initiated by sodium. The rubber was named Buna S, were Bu stands for butadiene, na for sodium (natrium in Latin) and S for styrene.

Properties

*Possible temperature range: approx. -40 to +100 °C (-40 to +212 °F)
*Chemical Type: styrene-butadiene (copolymer)
*Trade names (common): GRS, Buna S (SBR)
*Elongation (%): 450-500
*Useful temperature range: -60 to 120 degrees Celsius (-75 to 250 degrees Fahrenheit)
*Major application characteristics: good physical properties; excellent abrasion resistance; not oil, ozone, or weather resistant; electrical properties good, but not outstanding
*Typical applications: pneumatic tires and tubes; heels and soles; gaskets

External links

* [http://www.pslc.ws/macrog/exp/rubber/synth/buna.htm History of Buna S]


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Look at other dictionaries:

  • buna — buna …   Dictionnaire des rimes

  • Buna — may refer to: *Geographical places: ** The Albanian name for the Bojana River, a river in Albania and Montenegro. ** Buna, Kenya, captured by Italy in the East African campaign of World War II. ** Buna, Papua New Guinea, where the Battle of Buna… …   Wikipedia

  • Buna — bezeichnet: Buna (Kautschuk), einen synthetischen Kautschuk der Firma I.G. Farben Buna Werke, ein Industriekombinat zur Herstellung des synthetischen Kautschuks Buna (Adriatisches Meer) (serbisch: Bojana), einen Fluss zwischen Albanien und… …   Deutsch Wikipedia

  • BUNA — Nom générique de la plus importante famille de caoutchoucs synthétiques, buna vient de bu tadiène et de na trium (sodium, en allemand). Le caoutchouc naturel est le polymère, de structure bien déterminée, d’un hydrocarbure insaturé, l’isoprène ou …   Encyclopédie Universelle

  • buna — BÚNA s.f. Varietate de cauciuc sintetic. – Din germ. Buna (denumire comercială). Trimis de valeriu, 13.09.2007. Sursa: DEX 98  búna (cauciuc sintetic) s. f. Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic  BÚNA s.f.sg. Varietate de… …   Dicționar Român

  • bună — BÚNĂ s. v. bunică, mamă mare. Trimis de siveco, 13.09.2007. Sursa: Sinonime  MAMĂ BÚNĂ s. v. bunică, mamă mare. Trimis de siveco, 03.04.2008. Sursa: Sinonime  búnă purtáre adj. + s. f. Trimis de siveco, 28.10.2008. Sursa: Dicţionar ortografic …   Dicționar Român

  • Buna — n. [trademark.] a synthetic rubber made by copolymerizing butadiene with another substance such as acrylonitrile or styrene. Syn: buna S. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • Buna — Buna, TX U.S. Census Designated Place in Texas Population (2000): 2269 Housing Units (2000): 956 Land area (2000): 5.948625 sq. miles (15.406868 sq. km) Water area (2000): 0.008612 sq. miles (0.022306 sq. km) Total area (2000): 5.957237 sq. miles …   StarDict's U.S. Gazetteer Places

  • Buna, TX — U.S. Census Designated Place in Texas Population (2000): 2269 Housing Units (2000): 956 Land area (2000): 5.948625 sq. miles (15.406868 sq. km) Water area (2000): 0.008612 sq. miles (0.022306 sq. km) Total area (2000): 5.957237 sq. miles… …   StarDict's U.S. Gazetteer Places

  • buna — synthetic rubber made from butadiene, from Ger. Buna, from first elements of butadiene, name of a hydrocarbon (related to BUTANE (Cf. butane); the suffix indicates the presence of two double bonds) + Na, indicating sodium (from natrium; see… …   Etymology dictionary

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