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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/21266
Title: Comparison of reinforcing efficiency between Si-69 and Si-264 in a conventional vulcanization system
Authors: Pongdhorn Sae-Oui
Chakrit Sirisinha
Uthai Thepsuwan
Kannika Hatthapanit
Thailand National Metal and Materials Technology Center
Mahidol University
Keywords: Chemistry;Materials Science
Issue Date: 1-Dec-2004
Citation: Polymer Testing. Vol.23, No.8 (2004), 871-879
Abstract: Silica has long been recognized as a reinforcing filler, especially for light colored products. The degree of reinforcement is noticeably increased when silica is used in combination with silane coupling agent. Therefore, various types of silane coupling agents are now commercially available. In the present study, two types of silane coupling agents, e.g., bis-(3-triethoxysilylpropyl) tetrasulfane (Si-69) and 3-thiocyanatopropyl triethoxy silane (Si-264) were selected for comparison of their reinforcing efficiency in a conventional vulcanization (CV) system. The results reveal that the addition of silane coupling agent not only improves compound processability, but also enhances the mechanical properties of the rubber vulcanizates. Compared with Si-69, Si-264 gives rubber compounds with better processability due to its greater ability to promote filler dis-agglomeration during mixing. In addition, Si-264 also imparts a greater degree of reinforcement. This might be attributed to the combined effects of better rubber-filler interaction, better filler dispersion and higher state of cure which are obtained when Si-69 is replaced with Si-264. The dynamic properties of the rubber vulcanizates are also improved with the presence of silane coupling agent. In this aspect, Si-69 performs better than Si-264 as it provides rubber vulcanizates with lower heat build-up. © 2004 Elsevier Ltd. All rights reserved.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=4544237013&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/21266
ISSN: 01429418
Appears in Collections:Scopus 2001-2005

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