Fabrication and Thermal Conductivity of Flexible, Tear-resistant, and Self-healing Polyurethane/Boron Nitride Laminated Composites

Guan-sheng Chen; Tong Liu; Zhi-feng Wang; Jian-hua Xu; Jia-jun Fu

doi:10.11777/j.issn1000-3304.2025.25222

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Fabrication and Thermal Conductivity of Flexible, Tear-resistant, and Self-healing Polyurethane/Boron Nitride Laminated Composites

Research Article | 更新时间：2025-12-18

- Fabrication and Thermal Conductivity of Flexible, Tear-resistant, and Self-healing Polyurethane/Boron Nitride Laminated Composites
- Acta Polymerica Sinica Vol. 56, Issue 12, Pages: 2418-2429(2025)
- 作者机构：
  
  1.南京理工大学化学与化工学院南京 210094
  2.扬州大学测试中心扬州 225009
- 作者简介：
  
  Jian-hua Xu, E-mail: jianhuaxu@njust.edu.cn
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2025.25222
  CLC：
- CSTR：32057.14.GFZXB.2025.7472
- Received：30 August 2025，
  
  Accepted：26 September 2025，
  
  Published Online：12 November 2025，
  
  Published：20 December 2025
- 稿件说明：
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陈官胜, 柳童, 王志峰, 徐建华, 傅佳骏. 柔性抗撕裂自修复聚氨酯/氮化硼层状复合材料的制备及其导热性能研究. 高分子学报, 2025, 56(12), 2418-2429

Chen, G. S., Liu, T., Wang, Z. F., Xu, J. H., Fu, J. J. Fabrication and thermal conductivity of flexible, tear-resistant, and self-healing polyurethane/boron nitride laminated composites. Acta Polymerica Sinica, 2025, 56(12), 2418-2429
陈官胜, 柳童, 王志峰, 徐建华, 傅佳骏. 柔性抗撕裂自修复聚氨酯/氮化硼层状复合材料的制备及其导热性能研究. 高分子学报, 2025, 56(12), 2418-2429 DOI： 10.11777/j.issn1000-3304.2025.25222. CSTR： 32057.14.GFZXB.2025.7472.

Chen, G. S., Liu, T., Wang, Z. F., Xu, J. H., Fu, J. J. Fabrication and thermal conductivity of flexible, tear-resistant, and self-healing polyurethane/boron nitride laminated composites. Acta Polymerica Sinica, 2025, 56(12), 2418-2429 DOI： 10.11777/j.issn1000-3304.2025.25222. CSTR： 32057.14.GFZXB.2025.7472.

摘要

柔性导热材料是电子电器、能源与航空航天等领域的关键功能材料，但其应用受到损伤后难以自修复以及裂纹易扩展等问题的严重制约. 本研究通过将羟基化氮化硼纳米片引入自修复聚氨酯基体，并采用层压定构工艺构建有序层状结构，成功制备出兼具优异抗撕裂性能和自修复能力的柔性导热复合材料. 研究表明，该材料的面内导热系数达到5.8 W·m

-1

·K

-1

，断裂能为341.1 kJ·m

-2

，同时在60 ℃条件下可实现表面划痕与机械性能的完全修复，修复效率高达91.03%. 本研究为发展高性能导热材料提供了新的设计思路与实验依据.

Abstract

Flexible thermal conductive materials are critical functional components in electronics

energy

and aerospace applications. However

their practical utility is severely limited by issues such as the inability to self-repair after damage and a tendency for crack propagation. To address these challenges

this study successfully fabricated a flexible thermal conductive composite with integrated high tear resistance and self-healing capability by incorporating hydroxylated boron nitride nanosheets into a self-healing polyurethane matrix and constructing an ordered layered structure through a lamination process. The resulting material exhibited an in-plane thermal conductivity of 5.8 W·m

-1

·K

-1

and a fracture energy of 341.1 kJ·m

-2

. Moreover

it achieved complete recovery of both surface scratches and mechanical properties at 60 ℃ with a healing efficiency of 91.03%. This work provides a novel design strategy and experimental foundation for developing high-performance thermal management materials.

关键词

Keywords

references

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