| abstract |
The invention relates to the field of OCA optical adhesives, and specifically discloses an OCA optical adhesive used for a touch screen and a preparation method and application thereof, wherein the OCA optical adhesive comprises the following components by weight: 100 parts of acrylic resin; 5-10 parts of 4-tert-butylcyclohexyl ester; 0.1-0.5 parts of 1,6-hexanediol diacrylate; 5-10 parts of isobornyl acrylate; 7-12 parts of hydroxyethyl acrylate; 0.1-0.5 part of tackifying resin 0.5-2 parts of light stabilizer; 0.1-0.5 part of antioxidant; 1.0-2.0 parts of first photoinitiator; 0.1-0.5 part of second photoinitiator. Compared with the prior art, the present invention adopts the ultraviolet light polymerization technology to prepare the acrylic resin, which has the advantages of fast curing speed, energy saving, low pollution, and excellent performance of the cured product; and the OCA optical adhesive provided by the present invention is used to coat the touch screen, and the comprehensive performance is excellent. , The film has high and stable peeling force, high light transmittance, low haze, refractive index close to glass, no corrosion to the touch screen, no glue residue at constant temperature and humidity, no glue spillage, and excellent yellowing resistance. |