合成時，利用FT-IR光譜儀來確定其最佳反應條件及最佳組成配方比；並利用TGA之耐熱性測試、Photo-UV透光性測試、抗靜電測試等對其熱性質、透明性、導電性及機械物性等性質進行分析。實驗結果顯示這些複合材料在可見光區光穿透度達90%以上且其耐熱性Td 值最高可達422.05℃，較純WPU的Td 值高約64.30℃，且表面電阻值從4.69×1012Ω/ cm2降為4.24×108 Ω/ cm2，最後奈米光學薄膜經穿透式電子顯微鏡(TEM)檢測結果確認粉體無機微粒均勻分佈且平均粒徑為50~ 80nm都符合奈米材料的範圍。 The main object of this research is to synthesize a series of novel organic/inorganic WPU/HDI/DAD/clay and WPU/HDI/AEAPS/clay nanocomposites with transparent and highly thermal resistant characters. Firstly, DAD and AEAPS were used as the organic coupling agents of clay and were preformed a covalently cross-linking bonding with wpu organic matrix. Then, the WPU/HDI complexes were prepared from the condensation between WPU prepolymer and HDI diisocyanate components. An extra HDI linking agents were added to improve the thermal resistant and mechanical properties. The WPU/HDI complexes and the DAD/clay、AEAPS/clay composites were covalently bonded by urea or urethane linkages to form a perfectly cross-linking structure of organic/inorganic nanocomposites.
The bonding formation and the best weight contents of reaction components were identified by FT-IR spectra. The thermal resistance properties, transmittance and surface resistances were analyzed by TGA, photo-UV and the surface resistance meter. Experimental results indicated that these nanocomposites had 90% transmittance and the best Td values were 422.05℃, which was 64.30℃ higher than that of pure WPU resin . The surface resistances of WPU/HDI/DAD/clay hybrid thin films were decreased from 4.69×1012 to 4.24×108 Ω/ cm2. The morphology structure of the hybrid thin films were estimated by TEM. The results proved that the optical thin films were evenly distributed with organoclay and that the average particle size of these nanocomposites was 50~80 nm.