Study on Synthesize and Physical Properties of Polyurethane/Carbon Nanotube Nanocomposites

• Main Authors: Shin-Liang Chen, 陳信良
• Other Authors: none
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/72365708694836894285

碩士 === 國立雲林科技大學 === 工業化學與災害防治研究所 === 93 === The preparation of polyurethane (PU)/Carbon nanotube(CNT) nanocom- posites is main class in the study. With Increasing dispersion of CNT in the matrix by CNT functionalization to improve thermal、mechanical and electric properties of nanocomposites. Interfacial interaction of CNT and PU have been investigated by FTIR spectroscopy. Insight into the nature of CNT dispersion was gained by AEM、FE-SEM and AFM inspection. Thermal properties analyze by DSC and the analysis of thermal stability perform by TGA. The characterization of mechanical and electrical of composites is determined by Tensile and DC Four Probe. The crystallization is measured by X-ray. The result show modified CNT and polymer matrix with interaction to achieve good dispersion in composites film. With increasing the content of CNT , the hard segment Tg increase and become unobvious when reached 20wt%. The residual of composites raise substantially at 600℃. When addition reach 20wt% the Young''s modulus and tensile strength is enhanced by more than 400% and 100% , the electric conductivity with 10-1S/cm. X-ray with the characteristic diffraction peak of CNT. Above report display modified CNT with apparent utility in the nanocomposite.