METHOD FOR PREPARING A TRANSPARENT POLYMER MATERIAL INCLUDING MINERAL NANOPARTICLES WITH A SHAPE FACTOR STRICTLY HIGHER THAN 1.0

摘要

The present invention relates to a method for preparing a transparent polymer material, including steps i and ii in any order, consisting of: i. mixing together mineral nanoparticles, having a shape factor strictly higher than 1.0, a polymer matrix including at least 80 wt % of a first polycarbonate (PC) thermoplastic polymer, and a second transparent thermoplastic polymer different from the first thermoplastic polymer, in order to obtain a mixture; ii. heating the polymer matrix alone or in a mixture, in a molten state, in order to obtain the transparent polymer material, the mixture of step i including strictly less than 5 wt % of mineral nanoparticles with a shape factor strictly higher than 1.0.