Novel blocked mercaptosilane (3-propionylthio-1- propyltrimethoxylsilane) for natural rubber/silica composite reinforcement in various curing systems

In present work, the effect of novel blocked mercaptosilane(3- propionylthio-1-propyltrimethoxylsilane) (called hereafter PXT) on structure and dynamic mechanical properties of natural rubber/silica (NR/silica) composites was studied in efficient, semi-efficient and conventional vulcanization system...

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Bibliographic Details
Published ine-Polymers Vol. 8; no. 1; pp. 1190 - 1198
Main Authors Peng, Hualong, Liu, Lan, Luo, Yuanfang, Jia, Demin, Fu, Weiwen
Format Journal Article
LanguageEnglish
Published De Gruyter 01.12.2008
Subjects
blocked mercaptosilane
composite
curing system
dynamic mechanical properties
sulfur-containing silane
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Summary:In present work, the effect of novel blocked mercaptosilane(3- propionylthio-1-propyltrimethoxylsilane) (called hereafter PXT) on structure and dynamic mechanical properties of natural rubber/silica (NR/silica) composites was studied in efficient, semi-efficient and conventional vulcanization systems. Equilibrium swelling method investigation indicates that PXT is able to enhance crosslinking density of composites. The investigation of properties shows that PXT can strengthen the reinforcement of silica for NR vulcanizates and substantially enhance the resistance to flex cracking and abrasion of NR/silica composites. Since PXT possess two functionally active end groups which can chemically react with both silica and rubber, at 2 phr of the PXT content, NR/silica composites possess optimum comprehensive dynamic mechanical properties.
ISSN:2197-4586
1618-7229
1618-7229
DOI:10.1515/epoly.2008.8.1.1190