ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Tetramethyl thiuram disulfide, which functions as an inhibitor of the zinc dialkyldithiocarbamate-accelerated sulfur vulcanization, has been investigated by Mooney scorch measurements at 120°C and continuous measurements in a Vuremo curometer at temperatures from 100 to 140°C. The inhibition effect is due to the formation of a complex with zinc dialkyldithiocarbamate. The stability of the complex was calculated using the Hückel method which includes charge self-consistency on the central atom. The calculations are in a good agreement with the experimental results which illustrate that tetramethylthiuram disulfide, unlike an actual prevulcanization inhibitor, plays a significant role in all the stages of vulcanization. It decreases the crosslinking rate and increases the ultimate extent of vulcanization and its activation energy.
Additional Material:
7 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1979.070230716
Permalink