Low-precipitation PET film applied to dimming glass and preparation process thereof

Abstract

The invention provides a low-precipitation PET film applied to dimming glass. The low-precipitation PET film applied to dimming glass is prepared from the following raw materials in parts by weight: 93-96 parts of PET, 3-6 parts of a stabilizer and 1 part of other additives. The stabilizer is triethyl phosphono acetate. The PET film prepared by the preparation process is small in haze change in electroplating and liquid crystal pouring processes, covering and coating of the surface of the PET film are not required, and the PET film can be directly used in a conducting film and liquid crystal pouring process of the dimming glass, so that the cost is saved greatly and the optical performance of the glass is improved greatly.

Description

technical field [0001] The invention relates to the technical field of PET film modification, in particular to a low-precipitation PET film applied to dimming glass and a preparation process thereof. Background technique [0002] At present, the base film of conductive film used for dimming glass is common PET base film. Because PET will precipitate oligomers (oligomer) on the surface when it is heated (such as electroplating a conductive layer or filling liquid crystal). Oligomers will increase the haze of the conductive film, and then become less transparent, resulting in the phenomenon of "fogging", which will affect the use effect of the dimming glass. [0003] At present, it is possible to cover the oligomers that may be precipitated by coating on an ordinary PET film, but the transparency of the coating liquid, temperature resistance, the size and leveling of the resin particles, the coating layer The uniformity of the glass will affect the transmission and dimming e...

AI Technical Summary

Problems solved by technology

[0006] However, phosphoric acid is easy to react with antimony catalyst and toner cobalt acetate to produce precipitation and gel-like substances, and these precipitation and gel-like substances will also increase the haze of PET film

Therefore, in order to avoid precipitation and gel-like substances, when phosphoric acid, phosphorous acid and their esters are used as stabilizers, there are strict restrictions on the addition of catalysts, toners and other additives in the traditional preparation process

These addition restrictions include addition location, addition time, addition temperature, etc., but all reduce the preparation efficiency