30 Jul '15, 7am

Elastomers | What are Elastomers?

Elastomers | What are Elastomers?

Elastomers are thermo sets that require vulcanization but may also be thermoplastic. Vulcanization is the long polymer chains cross link during curing. Molecular structure of elastomers can be imagined as a ‘spaghetti and meatball’ structure with the meatballs signifying the cross links. The elasticity is derived from the ability of the long chains to reconfigure and distribute an applied stress. The covalent cross linkages can ensure that the elastomer will return to its original configuration when the stress is removed. Elastomers can be extremely flexible and reversible extend from 5-700 percent depending on the specific material. If without the cross linkages, it is uneasily to reconfigured the chains and applied stress as it would result to permanent deformation. Temperature effects can demonstrate elasticity of a polymer and have cooled to be a glassy or crystalline ...

Full article: http://www.thegreenbook.com/elastomers.htm#.VbnQAqDAG3c.t...

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