Electric-field-aligned liquid crystal polymer for doubling anisotropic thermal conductivity

Electric-field-aligned liquid crystal polymer for doubling anisotropic thermal conductivity

2024 | Maohua Li, Ping Gong, Zhenbang Zhang, Linhong Li, Yapeng Chen, Yue Qin, Yingying Guo, Rongjie Yang, Jianxiang Zhang, Yiwei Zhou, Kang Xu, Yandong Wang, Hainam Do, Xiaofei Jia, Tao Cai, Cheng-Te Lin, Nan Jiang & Jinhong Yu
A high thermal conductivity liquid crystal polymer (LCP) was developed by aligning liquid crystal monomers using an external electric field and photopolymerization. This method achieved an intrinsic thermal conductivity of 1.02 W m⁻¹ K⁻¹, significantly higher than most polymers. The alignment of liquid crystal molecules in specific directions enhanced thermal conductivity by optimizing heat transport pathways. The study demonstrated that applying an electric field during photopolymerization aligned the polymer chains, leading to improved thermal performance. The material showed excellent thermal stability and electrical properties, making it a promising candidate for thermal management applications. The research also highlighted the importance of molecular alignment in achieving high thermal conductivity in polymers, and the potential of liquid crystal polymers in various high-performance applications. The results indicate that electric field-induced alignment can effectively enhance the thermal conductivity of liquid crystal polymers, opening new possibilities for their use in thermal management systems.A high thermal conductivity liquid crystal polymer (LCP) was developed by aligning liquid crystal monomers using an external electric field and photopolymerization. This method achieved an intrinsic thermal conductivity of 1.02 W m⁻¹ K⁻¹, significantly higher than most polymers. The alignment of liquid crystal molecules in specific directions enhanced thermal conductivity by optimizing heat transport pathways. The study demonstrated that applying an electric field during photopolymerization aligned the polymer chains, leading to improved thermal performance. The material showed excellent thermal stability and electrical properties, making it a promising candidate for thermal management applications. The research also highlighted the importance of molecular alignment in achieving high thermal conductivity in polymers, and the potential of liquid crystal polymers in various high-performance applications. The results indicate that electric field-induced alignment can effectively enhance the thermal conductivity of liquid crystal polymers, opening new possibilities for their use in thermal management systems.
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