Hexagonal boron nitride nanoplatelets (BNNPs) can serve as twodimensional (2D) fillers for elastomer nanocomposites due to their excellent and intriguing mechanical and thermal properties. Homogeneous and stable dispersion of BNNPs in elastomer is key to successful composite applications. Herein we propose a facile and easily industrialized approach for incorporating fully exfoliated BNNPs with hydroxyl functional groups into elastomer using the latex compounding method. The prepared BNNPs are highly dispersed in various solvents and their size of a few microns preserves their in-plane structure. The environmentally friendly, cost-effective, scalable preparation method proposed shows great potential for advancing the performance of elastomer nanocomposites. Specifically, the incorporation of BNNPs into the elastomer matrix remarkably improved the elastic modulus and tensile strength, even at low loadings; this was ascribed to the enhanced interfacial bonding of the BNNPs with the elastomer matrix. Moreover, well-dispersed BNNPs within the elastomer provided outstanding thermal conductivity and gas permeability. † Electronic supplementary information (ESI) available: Further details of digital image of BNNPs nanocomposites and CNT nanocomposites, Raman spectroscopy of BN and BNNPs, SEM image of fractures of BN and BNNPs nanocomposites with different contents, TGA of BN and BNNPs nanocomposites with different contents, SEM images of the fracture surfaces of elastomer with different llers, TGA of elastomer nanocomposites with different llers. Elastic modulus of BN and BNNPs nanocomposites with different contents, elastic modulus of elastomer nanocomposites with different llers, gas permeability of elastomer nanocomposites with different llers. Electrical properties of elastomer nanocomposites. See
In general, carbon-based materials play a major role in today's science and technology and are required to advance with better properties to meet new requirements or to replace existing materials. We fabricated rubber composites reinforced with 5-weight% acid-graphite. The structural, mechanical and thermal properties of these composites were studied and compared. XRD studies indicated that the structure of the acid treated pristine-graphite (acid-graphite) did not change that of pristine graphite. Tensile properties of the composites indicated higher modulus, tensile strength and elongation in comparison with composites of pristine graphite, carbon black. Also, the composites were found to be in improving tendency with thermal properties and fatigue properties. The acid-graphite was investigated for surface morphology by scanning electron microscopy (SEM) and defects or purity by Raman spectroscopy. In this article, we discuss the influence of acid-graphite on rubber with high mechanical and thermal properties.
Homogeneous and stable dispersion of layered silicates in their rubber nanocomposite is a matter of interest as it can significantly affect the material properties. Herein we propose a facile and easily industrialised approach for preparing highly dispersed montmorillonite (MMT)/rubber nanocomposites by the latex compounding method. Furthermore, an efficient way of enhancing the interlayer spaces of organically modified MMT ( f-MMT) with alkyl-ammonium chains while mixing the styrene butadiene rubber (SBR) is reported. The f-MMT embedded SBR matrix shows a remarkable improvement of the modulus and tensile strength even in the low loading rate, which is ascribed to the well dispersion of the f-MMT enhancing interfacial interaction with the rubber matrix. Furthermore, we manufactured the practical pneumatic tire using f-MMT/SBR nanocomposite with outstanding wear resistance, grip performance and low-rolling resistance for the green tire application, opening up enormous opportunities to prepare high-performance rubber composites for future engineering applications.
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