The mechanical performance, rheological behavior, and phase morphology of linear low-density polyethylene (LLDPE) highly loaded with aluminum hydroxide [AI(OH)(3)] were investigated. It was found that titanate surface-active agent and ethylene-vinyl acetate copolymer (EVA) improve the processing and ductile properties of the composite remarkably but are accompanied by the deterioration of the tensile strength. Addition of vinyl triethoxy silane (VTEO) and dicumyl peroxide (DCP) improves the tensile strength of the composite because of the silane crosslinking structure introduced. A synergistic effect of interface modifying and silane crosslinking method in improving mechanical performance of the composite is presented. Phase morphology of the LLDPE/Al(OH)(3) composites was studied by means of scanning electron microscopy (SEM) technique. SEM micrographs indicate that a core-shell type with Al(OH)(3) as a core and EVA as a shell is formed in the composite.