材料科学
复合材料
消散
天然橡胶
弹性体
粒径
复合数
聚合物
马来酸酐
共聚物
热力学
物理
物理化学
化学
作者
Miaomiao Qian,Bo Zou,Zhixiao Chen,Weimin Huang,Xiaofeng Wang,Bin Tang,Qingtao Liu,Yanchao Zhu
出处
期刊:Polymers
[MDPI AG]
日期:2021-07-12
卷期号:13 (14): 2284-2284
被引量:15
标识
DOI:10.3390/polym13142284
摘要
Two factors, the crosslinking degree of the matrix (ν) and the size of the filler (Sz), have significant impact on the Mullins effect of filled elastomers. Herein, the result. of the two factors on Mullins effect is systematically investigated by adjusting the crosslinking degree of the matrix via adding maleic anhydride into a rubber matrix and controlling the particle size of the filler via ball milling. The dissipation ratios (the ratio of energy dissipation to input strain energy) of different filled natural rubber/butadiene rubber (NR/BR) elastomer composites are evaluated as a function of the maximum strain in cyclic loading (εm). The dissipation ratios show a linear relationship with the increase of εm within the test range, and they depend on the composite composition (ν and Sz). With the increase of ν, the dissipation ratios decrease with similar slope, and this is compared with the dissipation ratios increase which more steeply with the increase in Sz. This is further confirmed through a simulation that composites with larger particle size show a higher strain energy density when the strain level increases from 25% to 35%. The characteristic dependence of the dissipation ratios on ν and Sz is expected to reflect the Mullins effect with mathematical expression to improve engineering performance or prevent failure of rubber products.
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