Elastic recovery and plastic flow in raw rubber

摘要: Abstract In considering existing information on the mechanical properties of raw rubber, it is not generally possible to distinguish between effects elastic and plastic deformation. experiments described great care was taken secure complete removal strain, after stretching various extensions at different temperatures. The flow increased a maximum with increasing elongation fell again higher elongations, an effect attributed increase crystallization extension. For rubber held extended for one hour 25° C never greater than 2% original extension, 440% or less 130% negligibly small. Curves showing decay tension constant recovery length stretching, in conjunction observations flow, are interpreted terms theory proposed by Busse, according which molecules together certain po...