Stretchable nanocarbon material hybrids film and heater application

• Main Authors: Tzu-Hsiang Fu, 傅咨翔
• Other Authors: Chih-Wei Chiu
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/27626g

碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 107 === In recent years, the development of electrothermal textiles has received a lot of attention, and the combination of textile and heating elements has become the focus of research in the field of smart textiles. Warm textiles are based on textile materials, which make the textile yarn itself have the function of heating and heat preservation. Generally, the electrothermal product system commonly used in the market is mainly composed of carbon fiber, electric heating wire, etc., and further contains a high-purity nickel-based alloy. However, many problems of electrothermal textiles need to be overcome, such as the compatibility of textile and electric heating wire, the stability of heat source during operation, environmental protection of materials, and comfort. Therefore, in this study, carbon black, carbon nanotubes, and graphene were used as conductors to form active heating elements, and electrothermal films of different nanocarbon materials were fabricated for research purposes. The surface structure and electrical conductivity of electrothermal thin films were discussed. Thermal conductivity, stretchability, and repeated heating properties. The first part, due to the tendency of nanocarbon materials to tend to aggregate, the first design and synthesis of high-concentration dispersant (Carbon black, CB/Carbon Nanotubes, CNTs/Reduced Graphene Oxide, rGO) Obtaining a good dispersion pattern, the polymer dispersant is synthesized by amide reaction of Styrene Maleic Anhydride copolymer (SMA series) and Polyether monoamine (M1000). The results were   analyzed by FT-IR, DLS and TEM in different ratios of nanocarbon material and dispersant (1:0, 1:0.5, 1:1, 1:1.5, 1:2). The second part, the polymer dispersant makes the nanocarbon material (CB, CNT) stable and dispersed in the solution, Add polyurethane with elasticity (Polyurethane, PU). The heat-generating film was prepared by adding rGO using nanocarbon materials (CB, CNT), and comparing the ratio of nanocarbon material rGO to (2:1, 1:1, 1:2). The addition of rGO can improve the mechanical properties such as conduction, heat conduction, tensile and fatigue, and contribute to the uniform dispersion of nanocarbon materials (CB, CNT) and interconnected network structures so that the composite film is formed. The conductive network can improve conductivity and have stable thermoelectric performance. With a CNT/rGO ratio of 1:1, the minimum resistance of the film thickness of 100 μm is 3.3x101 ohm/sq, and the applied voltage (9V) film temperature rises to 92.1 °C, with a strain of 20%, and favorable recovery. The future will be applied to warm smart products.