Local elongation of stretched filled rubber surface

eXPRESS Polymer Letters

I. A. Morozov¹ 

关键词: rubber;    mechanical properties;    modeling and simulation;    atomic force microscopy;    local elongation;   

DOI  :  10.3144/expresspolymlett.2018.32

学科分类：生物科学（综合）

来源: eXPRESS Polymer Letters

【 摘 要 】

Local elongation of the surface of a stretched rubber is estimated by comparing the stiffness of stretched filled(30 or 50 phr of silicica) styrene-butadiene vulcanizate and the results of finite element simulation of the indentation of theunfilled elastomer. The local strain exceeds the macroscopic value, yet the weakly loaded areas are also present. As themacroscopic elongation increases, the oriented polymer strands are formed, whose strain is particularly high. An increase inthe filler content significantly increases the number and local elongation of strands. The highest tensile loads of the filledmatrix occur in the gaps with the initial size of 100 nm. The limitations of the dynamic indentation of stretched elastomersare shown.

【 授权许可】

CC BY