Applications of carbon nanotube (CNT):Part I: Preparations of Laser printing conductive toner; Part II: Process development and applications of styrene-isoprene-styrene/CNT conductive rubbers.
| Autor: | WU,CHIA-YUN, 吳佳芸 |
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| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 There are two parts of the study. Part I is about preparations of Laser printing conductive toner; Part II is about the process of development and applications of styrene-isoprene-styrene/CNT conductive rubbers. In the part I, we tried to use a novel and low cost method to fabricate the conductive toner and use this to print the conductive pattern. Preparation of conductive toner was carried out by freeze spray drying (lyophilization) and grinding methods. Ingredients for toner：CNT, Charge Controlling Agent (CCA), release agent (Wax), and resin. There are different lengths of CNT: 10-30µm, 10-50µm, and >100 µm. The particle size of the toner we produced can be situated between 5~6 µm, and with irregular plate-like morphology where CNT could be clearly seen on the particle surface. The measured resistivity of hot-pressed conductive toner powders was 0.009 to 0.022 Ω．m. In the part II study, we established a spaying technique to prepare SIS/CNT conductive rubber film/sheet, where thickness of film or sheet can be controlled by the number of coating. The resistivity of a 1.7×10-4 m thick 30 wt% CNT of SIS/CNT sheet was 2.77 ×10-5Ω-m. The flexibility, stretching, as well as hardness of the SIS/CNT conductive rubber was found to be highly dependent on the film/sheet thickness. By coating, spraying, pressing and other methods, we can manufacture conductive gloves and electromagnetic-wave absorbing/shielding membrane (EMS) ect. The touch screen gloves were prepared by coating of SIS/CNT conductive rubber onto the fingertips of gloves. This touch screen gloves exhibited excellent touch screen capability, and has passed the washing and the abrasive tests. A conductive rubber sheet with the electromagnetic shielding (EMS) was prepared with a 6 wt% loading of CNT. This sheet showed a 100% EMS efficiency of the working cellular phone and around 30% EMS efficiency of the working microwave. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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