

FOLLOWUS
a.Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, School of Mechanical Engineering, Tianjin University, Tianjin 300350, China
b.Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, China
c.Yangtze River Delta Carbon Fiber and Composite Material Innovation Center, Changzhou 213000, China
liqing@tju.edu.cn (Q.L.)
jiukemu@tju.edu.cn (J.K.M.)
Received:17 October 2025,
Accepted:03 January 2026,
Online First:02 March 2026,
Published:05 April 2026
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Lang, T. H.; Tong, L.; Yang, L. X.; Chen, Z. Y.; Qi, D. C.; Dong, Y. B.; Sun, Z.; Li, Q.; Song, X. F.; Mu, J. K. Development of organic-inorganic high thermal performance composites reinforced with nanofibers for 3D printing. Chinese J. Polym. Sci. 2026, 44, 1035–1045
Tian-Hong Lang, Lu Tong, Li-Xue Yang, et al. Development of Organic-Inorganic High Thermal Performance Composites Reinforced with Nanofibers for 3D Printing[J]. Chinese Journal of Polymer Science, 2026, 44(4): 1035-1045.
Lang, T. H.; Tong, L.; Yang, L. X.; Chen, Z. Y.; Qi, D. C.; Dong, Y. B.; Sun, Z.; Li, Q.; Song, X. F.; Mu, J. K. Development of organic-inorganic high thermal performance composites reinforced with nanofibers for 3D printing. Chinese J. Polym. Sci. 2026, 44, 1035–1045 DOI: 10.1007/s10118-026-3555-3.
Tian-Hong Lang, Lu Tong, Li-Xue Yang, et al. Development of Organic-Inorganic High Thermal Performance Composites Reinforced with Nanofibers for 3D Printing[J]. Chinese Journal of Polymer Science, 2026, 44(4): 1035-1045. DOI: 10.1007/s10118-026-3555-3.
A dual-filler strategy combining boron nitride and electrospun polymer nanofibers in a thermoplastic polyurethane matrix is developed to enhance thermal conductivity of 3D printing filaments without compromising mechanical strength or printability. The resulting filaments show improved heat conduction
retained insulation
and partially recovered tensile performance.
Integrating inorganic fillers into polymer-based 3D printing filaments is an effective strategy for improving thermal conduction but often compromises mechanical properties. In this study
we introduced electrospun polymer nanofibers (NF) into thermoplastic polyurethane (TPU) filaments alongside a ceramic filler
boron nitride (BN). By combining these organic (NF) and inorganic (BN) fillers
we created a dual-filler filament (TPU/BN/NF) that exhibited enhanced thermal conduction pathways without sacrificing the mechanical strength and electrical insulation. Comprehensive characterization demonstrated that BN improved heat transport
while a small fraction of electrospun NF effectively modulated the tensile modulus and partially recovered the strength lost upon BN addition. Finite element simulations further elucidated the influence of the nanofiber content
orientation
and length-to-diameter ratio on the mechanical performance. Notably
the dual-filler filaments retained good printability in standard fused deposition modeling (FDM) systems at optimized temperatures (about 210 °C). These findings offer a scalable approach for engineer multifunctional 3D printing filaments for 3D-printed thermal management products that require both thermal conduction performance and high insulation.
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