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Comparison of reinforcing efficiency between Si-69 and Si-264 in a conventional vulcanization system
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Document Title
Comparison of reinforcing efficiency between Si-69 and Si-264 in a conventional vulcanization system
Author
Sae-oui P, Sirisinha C, Thepsuwan U, Hatthapanit K
Name from Authors Collection
Affiliations
National Science & Technology Development Agency - Thailand; National Metal & Materials Technology Center (MTEC); Mahidol University
Type
Article
Source Title
POLYMER TESTING
ISSN
0142-9418
Year
2004
Volume
23
Issue
3
Open Access
hybrid
Publisher
ELSEVIER SCI LTD
DOI
10.1016/j.polymertesting.2004.05.008
Format
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. (C) 2004 Elsevier Ltd. All rights reserved.
Keyword
Mechanical properties | Reinforcement | rubber | silane coupling agent
Publication Source
WOS