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Effect of silane coupling agent on the fatigue crack propagation of silica‐filled natural rubber
Author(s) -
Yao Hong,
Weng Gengsheng,
Liu Yanpeng,
Fu Kun,
Chang Aijun,
Chen ZhongRen
Publication year - 2015
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.41980
Subject(s) - materials science , composite material , natural rubber , scanning electron microscope , coupling (piping) , morphology (biology) , silane , homogeneous , crack closure , fracture mechanics , genetics , physics , biology , thermodynamics
Based on the real‐time crack tip morphology monitoring, the influence of silane coupling agent (SCA) on the crack‐growth behavior of silica‐filled natural rubber (NR) was analyzed. By using SCA, silica particles can be well dispersed and a filler–matrix network can be formed, which leads to lower crack‐growth rate. Results indicate that a dosage of 5 wt % (with respect to silica loading) is the optimal content. The real‐time observation and scanning electron microscopy (SEM) analysis proved that thin ligaments and dimples with homogeneous distribution appear on the crack tip. These crack tip morphologies reflect the low crack‐growth rate. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41980.