| Title: | Evaluation of Surfactants on Graphene Dispersion and Thermal Performance for Heat Dissipation Coating |
| Author(s): | Cheng C; Shi WH; Teng TP; Yang CR; |
| Address: | "Department of Mechatronic Engineering, National Taiwan Normal University, No. 162, Sec. 1, He-ping E. Road, Da-an District, Taipei City 10610, Taiwan. Undergraduate Program of Vehicle and Energy Engineering, National Taiwan Normal University, No. 162, Sec. 1, He-ping E. Road, Da-an District, Taipei City 10610, Taiwan" |
| ISSN/ISBN: | 2073-4360 (Electronic) 2073-4360 (Linking) |
| Abstract: | "With the development of thin and high-power electronic devices, heat dissipation has become an important and urgent issue in thermal management. In this study, a water-based epoxy was used as a polymer matrix to prepare heat dissipation coatings utilizing low volatile organic compounds, which were environmentally friendly and had a high heat-dissipating performance. Graphene flakes, multi-walled carbon nanotubes and aluminum oxide particles were used as fillers for preparing the heat dissipation coating. The graphene flakes and multi-walled carbon nanotubes were dispersed in a water-based epoxy by adding sodium dihexyl sulfosuccinate and poly (dimethyldiallylammonium chloride). These two surfactants were combined as a dispersant to improve the dispersibility of the carbon nanomaterials in the water-based epoxy. The synergistic effect of the well-dispersed fillers improved the heat-dissipating performance. The experimental results show that the infrared emissivity of the heat dissipation film was 0.96 after filling 30 wt% aluminum oxide particles, 2 wt% graphene flakes and 2 wt% multi-walled carbon nanotubes into a water-based epoxy. The heat dissipation film reduced the thermal equilibrium temperature of the bare copper panel by 17.8 degrees C under a heating power of 10 W. The film was applied in a heat dissipation test on a 15 W LED bulb, and the thermal equilibrium temperature was reduced by 21.3 degrees C. The results demonstrate that the carbon nanomaterial-based heat dissipation coating with a water-based epoxy could significantly reduce the thermal equilibrium temperature, giving a high potential for the application of thermal management" |
| Keywords: | graphene flakes heat dissipation coating infrared emissivity surfactant synergistic effect volatile organic compounds water-based epoxy; |
| Notes: | "PubMed-not-MEDLINECheng, Chia Shi, Wen-Hao Teng, Tun-Ping Yang, Chii-Rong eng MOST 109-2622-E-003-006/Ministry of Science and Technology of Republic of China (Taiwan)/ MOST 107-2622-E-003-005-CC3/Ministry of Science and Technology of Republic of China (Taiwan)/ Switzerland 2022/03/11 Polymers (Basel). 2022 Feb 27; 14(5):952. doi: 10.3390/polym14050952" |
