| abstract |
The invention relates to the technical field of PET master batches, in particular to a long-acting antibacterial transparent PET master batch, a window film and a preparation method thereof. It includes the following raw materials in parts by weight: 50 parts of PET resin, 40-50 parts of special antibacterial agent, 2-6 parts of antioxidant, 1-4 parts of light stabilizer, and 1-3 parts of ultraviolet absorber. The mechanism of the special antibacterial agent of the present invention is: although the softening point of polyacrylonitrile is low, the melting point is high, and the polyacrylonitrile microspheres can maintain good structural integrity in the process of PET melt extrusion, and the PET is stretched to form a film. Then, since the thickness of the polyacrylonitrile microspheres is equivalent to the thickness of the film, the polyacrylonitrile microspheres are interspersed in the BOPET film and exposed to the air to improve the distribution of nano-titanium dioxide on the surface of the film. It also has long-lasting antibacterial properties without the need for spray treatment. |