Study on Improving the Bonding Properties of PET Polyester Film/Coating Interface

Untreated PET polyester film, the coating is difficult to adhere to it tightly. Therefore, the PET polyester film/coating interface bonding technology has become the primary problem to be solved for domestic and foreign scholars to study the functional application of coated PET polyester film.
Coating a layer of hard coating containing fluorine-siloxane graft polymer and ultraviolet curing resin on the transparent film substrate, the weight ratio of fluorine-siloxane graft polymer and ultraviolet curing resin is preferably 0.05:100 ~5.00:100, and the hard coating was subjected to alkali saponification. After performance testing, its pencil hardness can reach 2H~8H.
When the coating is made of high refractive index siloxane, it can be used as a primer for anti-reflective coatings. Add nitric acid to the composition of sodium acetate, tetraethoxysilane, methyltriethoxysilane, isopropanol and ethanol, and carry out a catalytic reaction for 2 hours to obtain silica sol, which can be used as a wear-resistant and scratch-resistant coating .