Preparation of the nanocomposites from Buckypaper

• Main Authors: Su,Yuya, 蘇郁雅
• Other Authors: 楊怡寬
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/03853286165364898347

碩士 === 東海大學 === 化學工程與材料工程學系 === 101 === The main purpose of this research is to prepare the nanocomposites from buckypaper and to investigate the mechanical and thermal properties of the nanocomposites. The research divides into two parts：the preparation of the buckypaper and that of buckypaper nanocomposites. The research is expected to resolve the problem that the limitation of the amount of carbon nanotube in the nanocomposites results from the poor dispersity, when blending with polymers. By resolving the problem,the mechanical properties of the composites are anticipated to be enhanced and leading to more applications. In the preparation of buckypaper, we used NMP to disperse the carbon nanotubes with sonication, and surfactants were implemented to give closer bindings to the carbon nanotubes. As a result, the porosity of the buckypaper was reduced. In the preparation of the buckypaper composites, we used a system of epoxy and anhydride which had the advantages of low viscosity and slow reactivity. A hot pressing method was used to impregnate epoxy resin and completed the preparation of composites with further curing. The results showed that the carbon nanotube content of the buckypaper composite was about 34wt%. The SEM image of fracture surface showed the epoxy resin homogeneously impregnated throughout the composites. DSC and TGA analysis ,showed that either Tg or the maximum pyrolysis temperature of the composite was lower than the neat epoxy with the same curing procedure. DMA analysis showed that the storage modulus of the composites was enhanced by about 2000% comparing to that of neat epoxy at the room temperature. And the Young’s modulus increased by 70% from the tensile test. The research demonstrated in the experiment data that nanocomposites made from buckypaper not only avoided the problem of poor mixing in the blending of the carbon nanotube and polymers but also exhibited superior mechanical properties.