Vigilancia Tecnológica

Two?dimensional molybdenum disulfide (MoS2) nanosheets are promising nanofillers for improving the properties of polymers, but low?cost, facile and green methods need to be further explored to meet the requirements for large?scale production of modified MoS2 nanosheets. Here, we developed a new idea that is, to prepare MoS2@Ag by modifying the surface of MoS2 using radiative reduction. It is noteworthy that the modified MoS2@Ag can effectively improve the mechanical strength of ethylene?vinyl acetate (EVA) composites. In addition, the addition of MoS2@Ag was able to substantially improve the flame?retardant properties of EVA, resulting in a significant reduction in the amount of heat and smoke released from its combustion. When two parts of MoS2@Ag were added, the peak heat release rate and total smoke release of EVA/2.0MoS2@Ag composites were reduced by 29.7% and 39.2%, respectively, compared with that of pure EVA. At the same time, the toxic gases (e.g., CO) produced by the combustion of EVA composites were significantly reduced, which indicates an improvement in their fire safety.