Anisotropically High Thermal Conductive Natural Rubber/Short-Cut Carbon Fiber Composites Prepared by One-Step for Localized Heat Sources Thermal Management
SSRN, ISSN: 1556-5068
2024
- 100Usage
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
The rapid development of next-generation portable electronic devices, including electronic skins, necessitates the use of flexible materials that possess efficient in-plane heat dissipation and superior mechanical properties. Short-cut carbon fibers (SCFs) have emerged as promising fillers due to their high thermal conductivity, strength, and cost-effectiveness. However, achieving a highly oriented structure of SCF inside the matrix, which fully capitalizes on the thermal conductivity of these one-dimensional (1D) fillers, remains a pressing challenge. In this work, we introduce a remarkably simple and integrated approach to fabricate natural rubber/oriented short-cut carbon fiber (NR/O-SCF) composites featuring an anisotropic thermal conductivity network in a single step. This method utilizes unidirectional ice templating to generate ice crystals that guide the orientation of SCFs within the NR matrix. Herein, the ice template approach demonstrates its suitability as an ideal method for preparing fillers with highly oriented structures in "ice template compatible polymers" like polystyrene foam and polyvinyl alcohol gel. The NR/O-SCF composites demonstrate a maximum thermal conductivity of 2.71 W m-1 K-1 on the face, 1706% higher than that of pure NR, thereby enabling superior thermal management capabilities for localized heat sources. Furthermore, these composites retain a substantial proportion of their compression properties in comparison to pure NR. The straightforward and feasible approach proposed in this work offers a pathway to achieve a high degree of filler orientation within the matrix, effectively addressing the challenge of thermal management for localized heat sources in a more cost-effective and efficient manner.
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