Preparation and Characterization of Novel Thermal Resistant and Transparent TMPTA/GMA/ICS/TiO2 Organic/Inorganic Nanocomposites

• Main Authors: Huang, Kuo-Chun, 黃國鈞
• Other Authors: Cheng, Pao-Swu
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/84102912423370603564

碩士 === 國立高雄師範大學 === 化學系 === 102 === Abstract This research is to develop novel TMPTA/GMA/ICS/TiO2 organic/inorganic nanocomposites and their hybrid films with high thermal resistant, transparent and anti-static properties. GMA(glycidyl methacrylate),TMPTA(trimethylolpropane triacrylate),ICS(tris[3-(trimethoxysilyl)propyl]isocyanurate), TiO2 and PMDA(pyromellitic dianhydride) were used as organic monomer, monomer of hypercrosslinked copolymer, coupling agent, inorganic filler and curing reagent respectively. Firstly, ICS coupling agent was acid hydrolysis for 15 min to form its reactive silanol intermediate. These silanols could covalently bound some TiO2 nanoparticles with their active Si-OH groups to get the ICS/TiO2 complexes. Then the ICS-modified TiO2 oxoclusters graft polymerized with active epoxide group of GMA monomer to form GMA/ICS/TiO2 composites by ring-opening polycondensation. After mixed TMPTA monomer, the final TMPTA/GMA/ICS/TiO2 nanocomposites were prepared by UV-activated photopolymerization. Meanwhile, ICS could perform the uniformly dispersion of inorganic nanoparticles in the hybrid materials. Polyfunctionalized TMPTA and PMDA components strongly constructed the highly crosslinked structure in these nanocomposites and it could much enhance the thermal stability, abrasion resistance and optical properties. The chemical bonding formation and the best weight contents of reaction components are identified by FT-IR spectra. The thermal resistance, transparence, surface electric resistance, and hardness of these nanocomposites are measured by TGA, UV-Visible, surface resistant meter, and pencil hardness tester resprctively. Experimental results show that these nanocomposites have 90% transmittance and the best Td value is 430.94℃ which is 138.94℃ and 43.05℃ higher than those of pure GMA resin and GMA/ICS/TiO2 hybrid material respectively.