Rheology simulation of rubber
courtesy of
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Dynamic viscoelastic properties of cross-linked poly-isoprene was calculated by using Primitive Chain Network model (NAPLES of OCTA). Effects of distribution of cross-linked positions (Fig.1) was evaluated. Molar mass of each molecule is about 300k. |
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Fig.1 Distribution of cross-link on polymer chain |
Rolling resistance of tire is related with tanδ (= G''/G'). In case1
and 3, tanδ shows low value at low frequency(Fig.2). |
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Fig.2 Calculated tanδ in each case. |