Important synthetic rubbers: styrene rubber , Chemistry

Styrene rubber (GR-S or Buna-S or SBR or Ameripol): Styrene butadiene rubber (SBR) is prepared by the copolymerization of butadiene (75%) and styrene (25%) in an emulsion styrene at in the presence of catalyst like Cunene hydro peroxide and p-methane hydro peroxide. When the emulsion polymerization is done at low temperature (-18 to 5 degree centigrade) in the presence of redox catalyst, than the resultant SBR is known as "cold rubber".

Properties: SBR has high abrasion resistance, high load bearing capacity, low oxidation resistance. It swells in oils and solvents and has resilience. Vulcanized and compounded cold rubber has a greater tensile strength and greater abrasion resistance than the SBR or natural rubbers.

Uses: SBR is used in motor tyres, shoe soles, gas kits, foot wear components, insulation of wire and cables, carpet backing, adhesives etc.

 

 

Posted Date: 7/21/2012 8:28:44 AM | Location : United States







Related Discussions:- Important synthetic rubbers: styrene rubber , Assignment Help, Ask Question on Important synthetic rubbers: styrene rubber , Get Answer, Expert's Help, Important synthetic rubbers: styrene rubber Discussions

Write discussion on Important synthetic rubbers: styrene rubber
Your posts are moderated
Related Questions
Formic acid is a weak acid along with a pKa of 3.75. The name comes by the Latin term "formica" ("ant") since this is very plentiful into the secretions of several species of ants,

Explain about the interstitial defects An interstitial is an atom that occupies a place outside the normal lattice position. It might be the similar type of atom as the others


who created or found Styrene


The total number of orbitals in an energy level designated by principal quantum number  n is equal to: (1) 2n                    (2) 2n 2            (3) n

what are the similarities of chemical and physical change

Which of the following electronic configurations is not possible: (1) 1s 2 , 2s 2                           (2)  1s 2 , 2s 2 , 2p 6     (3) 3d 10 4s 2 4p 2

Short note on synthetic rubber. S ol. Synthetic rubber: main types of synthetic rubbers: 1.                 Styrene rubber: Buna-S; Bu-Butadiene; Na=sodium; = Styrene