Rheology simulation of rubber
22
Jul
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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
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Rolling resistance of tire is related with tanδ (= G”/G’). In case1 and 3, tanδ shows low value at low frequency(Fig.2).
This means that chain end should be cross-linked to get low rolling resistance property. |
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Fig.2 Calculated tanδ in each case.
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