本文選題：碳納米管 + 超聲波��； 參考：《北京化工大學》2015年碩士論文

【摘要】：碳納米管／聚合物復合材料由于具有二者的性能,己成為聚合物基復合材料研究的熱點之一。目前,碳納米管在聚合物中的分散機理以及分散方法的研究仍處于起步階段,進而制約了碳納米管/聚合物復合材料的工業(yè)化生產。本文以碳納米管在聚合物中的分散作為主要研究對象,系統(tǒng)探討了不同分散方法對碳納米管分散效果的影響。首先利用常規(guī)超聲波分散法研究表面活性劑及其含量對碳納米管在環(huán)氧樹脂中分散效果的影響；并在無溶劑超聲波方法中添加表面活性劑,結果表明,表面活性劑可有效改善碳納米管的分散效果以及分散效率。熔融共混是最適合于工業(yè)化生產的方式之一,本文在研究碳納米管分散機理的基礎上,研發(fā)了一臺適用于碳納米管/聚合物熔融共混的連續(xù)拉伸分散實驗機,通過實驗研究了實驗機的轉子初始相位角以及工藝條件對碳納米管在環(huán)氧樹脂中分散效果的影響。實驗結果表明,轉子的初始相位角為O時,分散混合效果最佳；在一定范圍內增加混合時間能改善碳納米管分布效果；此外,在熔融共混過程中加入表面活性劑對整體的混合效果也有輕微作用。由于熔融共混與超聲波分散法各有局限性,利用自主研發(fā)的連續(xù)拉伸分散實驗機與超聲波設備相結合,研究了二者協(xié)同作用時時間、超聲波功率等工藝條件碳納米管分散效果的影響。結果表明把熔融共混中剪切、拉伸分散與超聲波分散中的空化作用有機地結合在一起,能大大提高混合效果。此外,本文利用溶液靜電紡絲法初步探討了電誘導法對碳納米管在聚合物中分散的可行性。
[Abstract]:Carbon nanotubes (CNTs) / polymer composites have become one of the hotspots in polymer matrix composites due to their properties. At present, the study on the dispersion mechanism and dispersion methods of carbon nanotubes in polymers is still at the initial stage, which restricts the industrial production of carbon nanotubes / polymer composites. In this paper, the dispersion of carbon nanotubes in polymers is taken as the main research object, and the effects of different dispersion methods on the dispersion effect of carbon nanotubes are systematically discussed. The influence of surfactant and its content on the dispersion of carbon nanotubes in epoxy resin was studied by conventional ultrasonic dispersion method, and the results showed that the surfactant was added to the solvent-free ultrasonic method. Surfactant can effectively improve the dispersion efficiency and dispersion efficiency of carbon nanotubes. Melt blending is one of the most suitable methods for industrial production. On the basis of studying the dispersing mechanism of carbon nanotubes, a continuous tensile dispersion machine suitable for carbon nanotube / polymer melt blending was developed in this paper. The effects of the initial phase angle of the rotor and the process conditions on the dispersion of carbon nanotubes in epoxy resin were investigated experimentally. The experimental results show that when the initial phase angle of the rotor is O, the dispersion and mixing effect is the best, and increasing the mixing time in a certain range can improve the carbon nanotube distribution. The addition of surfactants in the melt blending process also has a slight effect on the overall mixing effect. Due to the limitations of melt blending and ultrasonic dispersion, the time of synergistic action between the two methods was studied by combining the developed continuous tensile dispersion machine and ultrasonic equipment. Effects of ultrasonic power and other technological conditions on dispersion of carbon nanotubes. The results show that the combination of shear, tensile dispersion and cavitation in ultrasonic dispersion can greatly improve the mixing effect. In addition, the feasibility of electrolysis of carbon nanotubes in polymer was discussed by solution electrospinning method.
【學位授予單位】：北京化工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：O613.71;TB383.1

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本文編號：1922768