Preparation of UV-curable antiglare coatings by sol-gel process

• Main Authors: Chien-Ming Chen, 陳建銘
• Other Authors: Liao-Ping Cheng
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/64201958485868447815

碩士 === 淡江大學 === 化學工程與材料工程學系碩士班 === 95 === In this research, we used a sol-gel process to prepare UV-curable antiglare coatings. First the inorganic monomer tetraethoxylsilane (TEOS) was formed into colloidal silica by hydrolysis and condensation reactions. Then, added the couple agent 3-(trimethoxysilyl) propyl methacrylate (MSMA) and surfactant fluoroalkylsilane (13F) to modify the colloidal silica. Finally, organic monomer dipentaerythritol hexaacrylate (DPHA) were added to form hybrid material. We controlled the composition of reactants (TEOS, HCl, DPHA, MSMA) and reaction time to study their relations and their effects on optical characteristics, morphology and physical property of the formed coatings. The particle size of silica and modified silica were measured by TEM and light scattering. The surface morphologies of the films were observed by FESEM, SEM, and α-step. FTIR and EDAX were employed to investigate the chemical bondings in the coatings. TGA were employed to investigated the effect of silica content on the thermal property of the hybrid materials. In addition, the optical properties, such as gloss, haze, clarity, and total transmittance, and mechanical properties, such as hardness, and adhesion of the coatings were examined. The experimental results show that with the increase of MSMA, the gathering of particals were reduced, and particle were founed to distribute evenly in the sol. for hybrid materials, with addition of DPHA, the gloss, clarity, and hardness increased and the haze decreased. By adjusting the MSMA and DPHA contents, hardness of the AG coatings can reach up to 5-6H, haze, gloss, clarity, etc. reach the commercial standards.