Papers by Keyword: Mechano-Chemical Activation

Abstract: In this paper, the rubber blends of natural rubber (NR) with waste ground rubber powders (WGRPs) have been successfully prepared by mechano-chemical activation method and influences of the amounts of WGRPs on the mechanical properties of have been systematically investigated. The results indicated that the mechano-chemical treatment helped for releasing the active agents of WGRPs and formatting homogenous the cross-linked structures of final products. The tensile strengths linearly decreased from 28.6MPa to 12.6MPa while the tear strengths exponentially decreased from 72.8kN/m to 19.4kN/m as the function of the adding amounts of WGRPs.

Abstract: Nano-structured β-sialon precursor powders were obtained as a result of milling in a planetary mill with a high acceleration. Various mixtures of initial nitrides/oxides have been prepared as β-sialon precursor with low (0.4-1.0z) substitution and were milled in a planetary mill of acceleration 28g (TTD, Russia) with zirconia or silicon nitride balls for a various times (30-45 min). The resultant powder showed various extents of crystalline lattice deformation: smaller crystallites, dislocations, bumpy surface. The degree of lattice destruction was influenced by the milling time and grinding media, however various mixture components showed diverse susceptibility to deformation.