| abstract |
The present invention relates to the field of window film technology, in particular to a heat-insulating masterbatch, a BOPET window film and a preparation method. The heat-insulating masterbatch includes polyester resin, a heat-insulating composition and a dispersant, and the heat-insulating composition is A core-inner-shell-outer structure composition, the core of which is polyacrylonitrile carbon fiber, the inner shell is a titanium dioxide layer, and the outer shell is a polyacrylamide layer. The heat-insulating masterbatch of the present invention makes the BOPET window film of the present invention through the heat absorption effect and far-infrared effect of nano-polyacrylonitrile carbonized fiber, the ultraviolet shielding effect and reflectivity of titanium dioxide, and the light-gathering effect and light-absorbing effect of polyacrylamide. It has good light transmission, heat insulation and heat preservation, and has great application prospects. |