Journal
MATERIALS & DESIGN
Volume 50, Issue -, Pages 558-565Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2013.03.050
Keywords
Surface modification; Antioxidant; Precipitated silica; Ageing; Styrene-butadiene rubber
Categories
Funding
- National Natural Science Foundation of China [21004022]
- Guangdong Natural Science Foundation [10451064101005083]
- National Basic Research Program of China [2011CB606002]
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In order to improve the dispersion of silica in rubber matrix and to avoid volatility and extractability of the antioxidants, antioxidant functionalized silica is synthesized through reaction of precipitated silica and antioxidant coupling agent which is synthesized by (3-glycidyloxypropyl)trimethoxysilane (A-187) and N-phenyl-1,4-phenylenediamine (PPDA). This antioxidant functionalized silica with different antioxidant content is then incorporated into styrene-butadiene rubber (SBR) to study their reinforcement and antioxidation effects. The tensile strength of these composites is much higher than that of neat silica/SBR, and increases with increasing antioxidant content. It is close to that of bis(triethoxysilylpropyl)tetrasulfane (TESPT) modified silica/SBR when the antioxidant content exceeds 3.9% (by weight to silica). Furthermore, SBR filled with antioxidant functionalized silica has greatly improved stability in thermal oxidative ageing and damp heat ageing. (c) 2013 Elsevier Ltd. All rights reserved.
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