ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary Physical aging behavior of polycarbonate samples has been studied by dynamic mechanical torsion tests near ambient temperature in the range of 0.01 to 100 rad/s. Aging effects have been measured either after heating above Tg and quenching, or after cold drawing at ambient temperature, or after a combination of both. On the quenched samples our results are consistent with findings of S{uptruik} (1) obtained by creep tests, i.e. an aging rate, μ,, of about 1. On the other hand, on the cold drawn samples μ was found to be about 2.3 when determined from storage modulus data, and about 1.5 from loss modulus, indicating an acceleration effect on the molecular mobility in PC.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00254915
