| Summary: | 碩士 === 中國文化大學 === 化學工程與材料工程學系奈米材料碩士班 === 107 === This project object is use the thermoplastic polyurethane (TPU) and nano titanium dioxide (TiO2) to uniformly mix the nanocomposites were uniformly mixed by a melt kneading machine, and the processing, optical properties, physical properties, mechanical properties, thermal properties and dynamic mechanical properties of the nanocomposites were investigated. Surface modified modifier is used 3-(Trimethoxysilyl) propyl methacrylate (MPS). It was grafted onto the surface of nano titanium dioxide, and it was verified by FT-IR, TGA, XRD whether the modification was successful.
The polymer composite used in the experiment was prepared by adding unmodified nano titanium dioxide and modified nano titanium dioxide in proportion to thermoplastic polyurethane resin. 1, 3, 5 phr of a nanocom-posite compounded in a melt kneader (TPU per 100 g: 1 g, 3 g, 5 g of TiO2, m-TiO2).
Study on the spectral analysis (Raman, FT-IR, XRD),optical properties (transparency),mechanical properties (tensile, impact, wear resistance, hardness) thermal properties (TGA, VST, MI) and thermal dynamic proper-ties (DMA).of TiO2 and MPS-m-TiO2 on different thermoplastic composites with different grams. Particle size analysis confirmed that the nano TiO2 be-fore and after the modification was in the nanometer grade. SEM showed good dispersion properties. The addition of nano TiO2 will enhance the thermal properties of this nanocomposite, and the heat resistance is also improved. In terms of mechanical properties, tensile strength, impact strength and hardness are also enhanced by the addition of nano TiO2.
Therefore, this study shows that the addition of nano TiO2 can achieve the effect of strengthening thermoplastic polyurethane/nano titanium dioxide composite.
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