Synthesis and Properties of Novel THEICTA/EEC/VTMS/ZnO Thermal Resistance and UV-shielding Organic/Inorganic Nanocomposites

• Main Authors: Chen, Zong-Jhih, 陳宗志
• Other Authors: Cheng, Pao-Swu
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/59633117251350623866

碩士 === 國立高雄師範大學 === 化學系 === 100 === Abstract This research is to synthesis THEICTA/EEC/VTMS/ZnO nanocomposite materials with high heat resistance, good transmittance, UV-shielding and anti-static properties. Firstly, the VTMS was performed the silanol intermediates by hydrolysis in pH2~3 acid solution. The inorganic anti-static fillers of powder ZnO could be successfully coupled and crosslinked to THEICTA/EEC organic matrices with these silanols of VTMS coupling agents. The remained active -OH functional groups of the VTMS/ZnO complexes could network bonded with EEC prepolymers. Therefore, the EEC/VTMS/ZnO complexes with good anti-static composites would be successfully prepared. Finally, in order to improve the thermal resistant and mechanical properties, the THEICTA acrylate monomers and the EEC/VTMS/ZnO composites were chain polymerized by free radical polymerization to form a perfectly cross-linking structure of orgaic/inorganic nanocomposites. The chemical bonding formation and the best weight contents of reaction components were identified by FT-IR spectra. The thermal resistance, optical transmittance, surface resistane, and hardness of these nanocomposites are measured by TGA, UV-Vis, super megohmeter and hardness tester respectively. Experimental results showed that these nanocomposites had 95% transmittance and the best Td value was 424.02℃ which was 181.50℃ higher than that of pure EEC epoxy resin respectively. The surface resistanes of THEICTA/EEC/VTMS/ZnO hybrid thin films were decreased from 5.34×1013to 3.71×1010 Ω/ cm2. The hardness of these nanocomposites was 9H, and those hybrid films had good UV-shielding properties. The morphology structures of the hybrid thin films were estimated by FE-SEM. These results showed that the optical thin films were evenly distributed with inorganic colloidal particles and the average particle size of these nanocomposites was 10~30 nm. Key words: Epoxy, Acrylic monomer, Thermal Resistance, UV-shielding