Journal
PLASTICS RUBBER AND COMPOSITES
Volume 47, Issue 9, Pages 398-412Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14658011.2018.1516435
Keywords
Rubber; graphene; tube model; carbon black; wet compounding; latex mixing
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Funding
- International Science & Technology Cooperation Program of China [2015DFA51110]
- Joint Laboratory for Graphene-based Multifunctional Polymer Nanocomposites - National Research Council (CNR)
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The extensively used latex mixing approach to prepare graphene can improve the graphene dispersion but meets some challenges in the preparation of high content carbon black filled rubber system like a rubber tire. Owing to the high melt viscosity of the rubber/graphene masterbatch, the dispersion of carbon black is not perfect during twin-roll mixing and some aggregates will be formed. Here we proposed a wet compounding process, combined with ultrasonically assisted latex mixing, named as the WCL method to prepare reduced graphene oxide/carbon black/natural rubber (rGO/CB/NR) composites. The morphological observations confirmed that both graphene and carbon black can be evenly dispersed in the rubber composites. The incorporation of rGO also improves the hardness, thermal conductivity and anti-aging properties of the composites. The rGO/CB/NR composites prepared by the WCL method possess better mechanical properties compared to conventional latex mixing. The entanglement-bound rubber tube model was utilised to understand the reinforcing mechanism.
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