Multi-walled carbon nano-tube/polystyrene composite material film preparation method

Abstract

The present invention relates to a method for preparing a polystyrene-multi-walled carbon nano-tube composite material through a solution blending aqueous solution film forming method. The preparation method comprises: 1, adding a certain amount of polystyrene, various functionalized multi-walled carbon nano-tubes and a surfactant triton into a weighing bottle filled with a certain amount of tetrahydrofuran, placing onto a magnetic roton stirrer, and carrying out mechanical stirring until the polystyrene is completely dissolved and the multi-walled carbon nano-tubes are uniformly dispersed; 2, carrying out an ultrasonic treatment, wherein the dissolved and dispersed composite material solution is subjected to an ultrasonic treatment for a certain time until the carbon nano-tubes are further completely and uniformly dispersed; and 3, forming a film, wherein the composite material solution is poured into a particular container to form a film, and after a certain time, the container is placed into deionized water to completely form the film. The method of the present invention has advantages of simple process, low energy consumption, high film forming efficiency, less pollution, and the like.

Description

technical field [0001] The invention relates to a preparation method of a multi-walled carbon nanotube / polystyrene composite film, belonging to the technical field of composite materials. Background technique [0002] Carbon nanotubes (CNTS) have many excellent properties, such as: high aspect ratio, large specific surface area, special electrical properties and super mechanical properties. Therefore, based on these excellent properties of carbon nanotubes, carbon nanotubes are combined with some commonly used polymer matrix materials. The material can effectively transfer the load to the carbon nanotubes under the condition of an external load, thereby significantly improving the mechanical properties and electrical properties of the polymer matrix composite material. Many studies are devoted to improving the force between the polymer and the carbon nanotubes so that the two can achieve a good dispersion effect. [0003] Generally speaking, the preparation methods of carb...

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Problems solved by technology

[0004] Although the current research on carbon nanotube composites is relatively mature, many researches on carbon nanotube composites are still in the laboratory stage, and it is difficult to realize industrial production. There are two main reasons for this: (1) due to the The large aspect ratio, high specific surface energy, and almost insoluble in any solvent make it difficult for carbon nanotubes to disperse uniformly in the polymer matrix, and it is easy to agglomerate together, so it cannot effectively improve various properties of composite materials

For the combination of polymer and inorganic small molecule carbon nanotubes, if the surface of carbon nanotubes is not modified, the interfacial bonding force with the polymer matrix will be very poor. Falling off, the load cannot be effectively transferred to the carbon nanotubes, so that the effect of improving the mechanical properties cannot be achieved

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