PC light-scattering material containing “pomegranate-like” SAN-SiO2 microspheres with excellent effective scattering range based the large-screen display

In this work, based the perspective of thermodynamics and dynamics theory, we used a simple, convenient and green melt blending method to prepare polycarbonate (PC)/poly (styrene-co-acrylonitrile) (SAN)-SiO2 light-scattering materials containing “pomegranate-like” SAN-SiO2 microspheres. The small spherical particles (SiO2) of the composite microspheres could produce multiple scattering effect, reducing the direct transmittance and increasing the scattering transmittance, which greatly improved the light-scattering performance of the material. The effective scattering range and scattering uniformity of the material were obviously improved on the premise that the transmittance and haze slightly lost even increased. In addition, due to the limited volume, the selective distribution of SiO2 particles in the SAN dispersed phases greatly reduced the percolation threshold of the scattering angle by 65%. In short, this work provided a light-scattering material with excellent light-scattering performance and mechanical properties, which was expected to be made into a thin and effective light-scattering film for large-screen display, flexible lighting and other fields.