BHT AS A SCORCH RETARDER IN EPDM PEROXIDE VULCANIZATIONS

Authors
DIKLAND HG LEUSSINK IM VANDERDOES L BANTJES A
Citation
Hg. Dikland et al., BHT AS A SCORCH RETARDER IN EPDM PEROXIDE VULCANIZATIONS, Kautschuk und Gummi, Kunststoffe, 46(6), 1993, pp. 436
Citations number
37
Categorie Soggetti
Polymer Sciences","Engineering, Chemical
Journal title
Kautschuk und Gummi, Kunststoffe → ACNP
ISSN journal
09483276
Volume
46
Issue
6
Year of publication
1993
Database
ISI
SICI code
0948-3276(1993)46:6<436:BAASRI>2.0.ZU;2-A
Abstract
The action of 2,6-di-tert-butyl-p-cresol (BHT) as a scorch retarder in peroxide vulcanisations of EPDM was studied. With rheometry it was sh own that the highest scorch retarding efficiency is obtained at a low molar ratio of BHT to peroxide (1 : 10). A higher ratio and a higher p eroxide concentration resulted in an increased cure rate. In combinati on with results from sol-gel analyses, FT-IR spectroscopy, vulcanisate extract analysis and hot air ageing tests, a reaction mechanism for p eroxide vulcanisation of EPDM in the presence of BHT was formulated.