| Summary: | 碩士 === 中原大學 === 化學研究所 === 97 === Waterborne polyurethane- nanoscale mesoporous silica nanocomposite materials were prepared by using nanoscale mesoporous silica nanoparticle of NMS and modified nanoscale mesoporous silica nanoparticle of M-NMS instead of clay.
In this thesis, a novel segmented water base polyurethane / mesoporous material nanocomposite (WPU/NMS) based on 4,4′-methylenebis(cyclo hexyl isocyanate), polycaprolactone, dimethylolpropionic acid, triethylenetetramine, and mesoporous material.
Mechanical properties, about mesoporous material in WPU results in a increase in the modulus as comfirmed by DMA studies. From TGA data, increasing of NMS content will shift Td to a much higher temperature. These phenomena is due to porous effect and high contacted area from mesoporous molecular sieves.
Keywords：nanocomposite；mesoporous；polyurethane；modulus
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