Surface treatment of PET polyester film (2)-film supplier
Using benzophenone (BP) as a photoinitiator, the PET polyester film was surface-grafted with acrylic acid under UV light irradiation. After the grafting reaction, the carboxyl group (-COOH) is introduced to the surface of the PET polyester film. The measurement results of the surface contact angle show that the contact angle of the PET film surface gradually decreases with the increase of the grafting rate. Use an aqueous coating solution for optical polyester film on the PET polyester film, the aqueous coating solution contains 1.5%wt of polyester resin, 1.0%wt of melamine resin, 5.0%wt of acrylic resin and A small amount of surfactant. After coating, the obtained polyester film has high transparency, low haze, excellent adhesion and slipperiness, and is suitable for substrates for optical applications such as diffusion films and brightness enhancement films. Coating a coating solution containing acrylic adhesive, silicon-containing wetting agent, colloidal silica, and melamine hardener on the PET polyester film, the PET film and the post-processing layer have excellent adhesion strength , More suitable for optical film use. According to Coating Online, there are many factors that affect the bonding strength of the interface, such as interface residual stress, coating thickness, curing temperature, curing time, and post-curing. Is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide variety of products, affordable prices, and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, and warm and thoughtful service. Interested parties welcome to inquire!