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Title

NEW INSIGHTS IN THE CNT-RUBBER STRUCTURE FOR A RATIONAL DEVELOPMENT OF ADVANCED MATERIALS

AuthorsValentin, J. L.; Bernal-Ortega, Pilar; Bernal, M. Mar ; González-Jiménez, A.; Navarro, Rodrigo
KeywordsRubber reinforcement
Viscoelastic properties
Composite structure
1H DQ-NMR
Issue Date17-Apr-2019
AbstractIn this work, a systematic characterization of CNT rubber structure has been performed by using a combination of exper i- mental techniques (including advanced 1 H time domain NMR methods) and the last developed analysis procedures (including stress an d strain amplification factors) in order to improve the understanding about the mechanical and viscoelastic properties of these nano composites. According the obtained results, these promising materials could have some li m itations to be applied in high per formance tire tread compounds (mainly related to the rolling resistance and fuel consumption) because of the difficulty of dispersion of CNT in ru b- ber matrices (high filler networking), the strong influence of CNT in the vulcanization process (low cross li nk density and high network defects) and the nature of filler rubber interactions (high energy dissipation associated to the rupture of filler rubber interactions at high strain amplitudes). To overcome th ese issue s , the CNT have been surface modified with oxygen bearing groups and sulfur.
URIhttp://hdl.handle.net/10261/210590
Appears in Collections:(ICTP) Comunicaciones congresos
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