| Summary: | 碩士 === 高雄師範大學 === 化學系 === 98 === The main objective of this research is to study and develop the synthetic methods of highly heat resistant and anti-electrostatic WPU nano-composite materials. Firstly, DAD is used as a coupling agent to perform organic modification of clay and identify chemical linkage status with FT-IR. The nanocomposites were spin-coated with the spin coator at room temperature to form an optical thin film. The thermal properties, the surface resistance and light transparency were measured and discussed.
The crosslinking reactions between pure waterborne polyurethane and DAD/clay is investigated by FT-IR. The morphology structure of the nano-composites is observed with TEM. According to the results of TGA, the thermal decomposition temperatures (Td) of these nano-composites are 9.37℃~36.21℃ higher than that of pure waterborne polyurethane . The excellent transparencies of these thin films in visible light regions are detected by UV-visible spectrometer. On the aspect of anti-electrostatic property, the surface resistances of the WPU/DAD/clay thin films which was coated with organic anti-electrostatic reagent, Saftomer ST-2000H, is highly decreased from 4.07×1013Ω/cm2 to 8.29×107Ω/cm2. They have reached the standard scales of anti-electrostatic nanocomposites.
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