| Summary: | 碩士 === 國立中興大學 === 材料工程學研究所 === 92 === Polymer substrate has replaced alternate construction materials in many industries due to their lower cost or lighter weight. Many of its properties are also desirable in the flat panel display industry, where the demand for remote information access is driving the development of rugged, flexible, lightweight, power efficient displays. However, there are some technological difficulties for the realization of a display on polymer substrate, such as lower thermal stability and higher oxygen and water molecules permeation.
In this research we have successfully been prepared COC/clay nanocomposite through the mixing of COC with organically modified clay in solution to reduce the water/oxygen permeation. The addition of MMT into COC increase the physical and mechanical properties of COC, and the water and oxygen permeation can be reduced by 62% and 15%. Due to the amorphous structure of COC, is transmissivity will become upper than 90%. Further surface treatment by plasma and multi-layer organ/inorganic barrier has also been developed, the surface roughness by plasma treatment is about 40nm, 30nm and 20nm.
The inorganic material SiO2 prepared by sol-gel process with the thickness about 20nm and 30nm is employed as barriers. The coated SiO2 layer on the surface of 1wt% COC/clay nanocomposite can further reduce the water and oxygen permeability by 73.4% and 70.9%
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