A durable photochromic pet film production process

Abstract

A kind of photochromic PET film preparation process that can be durable, including WO 3 , TiO 2 The 8% glycerol solution was added to the composite sol with a molecular ratio of 22:1:1-15:1:1 to ZnO to form a photochromic solution; the PET base film was transferred to the soaking kettle, and after vertical soaking, After oblique soaking, liquid control, and drying, the upper guide roller guides the upper film, and the lower guide roller guides the PET base film and the lower film. The final structure of the three lamination is the upper film-upper photochromic layer-PET Film formation of the base film-under the photochromic layer-under the cover film. The film formed in this way has uniform and excellent optical properties, while avoiding inter-film peeling, and has better durability in use.

Description

technical field [0001] The content of the invention belongs to material science, and in particular, relates to a process for producing a durable photochromic PET film. Background technique [0002] With the continuous development of science and technology and the progress of human society, people's requirements for material materials are also increasing. Among various new materials, photochromic materials are favored by researchers because of their reversible color changes under the irradiation of excitation light. It has huge application prospects in the fields of optical information storage, large-area data display, smart glass and military anti-counterfeiting. [0003] Photochromism is a product that transforms into another color through a series of chemical reactions when a compound is irradiated with light of a certain wavelength; the absorption spectrum changes significantly due to the change of the molecular structure or electronic configuration of the material befor...

AI Technical Summary

Problems solved by technology

Traditional measuring instruments include spectrophotometers, spectrometers, scanning electron microscopes, transmission electron microscopes, diffractometers, etc. These instruments have high measurement accuracy, but are usually expensive, professional, and relatively complicated to operate. They are usually used for product samples. Sampling testing, not suitable for mass production in factory production lines

[0009] In the prior art, there is also a means of rapid detection using image processing methods, but the conventional image processing technology is not specially designed for the difficulties of film detection on the production line, and is not suitable for polyester film production lines. Usually, the detection error rate is high and cannot be detected. actually used in the factory

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